As filed with the Securities and Exchange Commission on June 13, 2013December 29, 2020

Registration No. 333-            333-251491

 

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.DC 20549

 

 

Amendment No. 1 to

FORM S-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

 

 

CONATUS PHARMACEUTICALSHISTOGEN INC.

(Exact name of registrant as specified in its charter)

 

 

 

Delaware 28342836 20-3183915

(State or other jurisdiction of

incorporation or organization)

 

(Primary Standard Industrial

Classification Code Number)

 

(I.R.S. Employer

Identification No.)Number)

4365 Executive Dr.,10655 Sorrento Valley Road, Suite 200,

San Diego CA 92121

(858) 558-8130526-3100

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

 

 

Steven J. Mento, Ph.D.Richard W. Pascoe

President and Chief Executive Officer

Conatus Pharmaceuticals Inc.

4365 Executive Dr.,10655 Sorrento Valley Road, Suite 200,

San Diego CA 92121

(858) 558-8130526-3100

(Name, address, including zip code, and telephone number, including area code, of agent for service)

 

 

Copies to:

 

Copies to:

Scott N. Wolfe, Esq.Larry W. Nishnick

Cheston J. Larson, Esq.Kathryn Fortin

Matthew T. Bush, Esq.DLA Piper LLP (US)

Latham & Watkins LLP

12636 High Bluff Dr.,4365 Executive Drive, Suite 4001100

San Diego, CA 9213092121

(858) 523-5400677-1414

 

Thomas S. Levato, Esq.Faith L. Charles

Maggie L. Wong, Esq.Jennifer A. Val

Goodwin ProcterThompson Hine LLP

The New York Times Building

620 Eighth335 Madison Avenue, 12th Floor

New York, NY 1001810017-4611

(212) 813-8800344-5680

 

 

Approximate date of commencement of proposed sale to the public:As soon as practicable after this Registration Statement is declaredregistration statement becomes effective.

If any of the securities being registered on this formForm are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933 check the following box.  box:  ¨

If this formForm is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  offering:  ¨

If this formForm is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  offering:  ¨

If this formForm is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  offering:  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer”filer,” “smaller reporting company,” and “smaller reporting“emerging growth company” in Rule 12b-2 of the Exchange Act.

 

Large accelerated filer

Accelerated Filer
 

¨

  

Accelerated filer

Filer
 

¨

Non-accelerated filer

Non-Accelerated Filer
 

¨  (Do not check if a smaller reporting company)

  

Smaller reporting company

Reporting Company
 

¨

Emerging Growth Company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act.  

 

 

CALCULATION OF REGISTRATION FEE

 

 

Title of Each Class of

Securities To Be Registered

 Proposed Maximum
Aggregate Offering Price(1)
 Amount of
Registration Fee(2)

Common Stock, $0.0001 par value per share

 $69,000,000 $9,412

 

 

 

Title of Each Class of Securities to be Registered 

Proposed Maximum

Aggregate Offering

Price(1)

 

Amount of

Registration

Fee

Common stock, par value $0.0001 per share(2)

 $ 12,000,000 $ 1,309.20

Warrants to purchase common stock(3)

       —       —

Common stock issuable upon exercise of warrants(2)

 $ 12,000,000 $ 1,309.20

Pre-funded warrants to purchase common stock(3)

       (4)       —

Common stock issuable upon exercise of pre-funded warrants

 $   (4) $   —

Placement Agent’s warrants to purchase common stock(3)

       —       —

Shares of common stock issuable upon exercise of Placement Agent’s warrants(2)(5)

 $ 750,000 $ 81.83

Total

 $ 24,750,000 $ 2,700.23(6)

 

 

(1)

Estimated solely for the purpose of calculating the amount of the registration fee pursuant toin accordance with Rule 457(o) under the Securities Act of 1933, as amended. Includes the offering price of shares that the underwriters have the option to purchase to cover over-allotments, if any.amended (the “Securities Act”).

(2)

Calculated pursuantPursuant to Rule 457(o)416, the securities being registered hereunder include such indeterminate number of additional securities as may be issued after the date hereof as a result of stock splits, stock dividends or similar transactions.

(3)

No fee required in accordance with Rule 457(g) under the Securities Act.

(4)

The proposed maximum aggregate offering price of the common stock will be reduced on a dollar-for-dollar basis based on an estimatethe offering price of any pre-funded warrants sold in the offering, and the proposed maximum aggregate offering price.price of the pre-funded warrants to be sold in the offering will be reduced on a dollar-for-dollar basis based on the offering price of any common stock sold in the offering. Accordingly, the proposed maximum aggregate offering price of the common stock and pre-funded warrants (including the common stock issuable upon exercise of the pre-funded warrants), if any, is $12,000,000.

(5)

Represents warrants to purchase a number of shares of common stock equal to 5.0% of the aggregate number of shares of common stock and accompanying common warrants sold in this offering, including shares of common stock issuable upon exercise of the pre-funded warrants and accompanying common warrants, at an exercise price equal to 125% of the public offering price per share.

(6)

$1,309.20 of filing fee previously paid.

 

 

The Registrantregistrant hereby amends this Registration Statementregistration statement on such date or dates as may be necessary to delay its effective date until the Registrantregistrant shall file a further amendment which specifically states that this Registration Statementregistration statement shall thereafter become effective in accordance with Sectionsection 8(a) of the Securities Act of 1933 or until the Registration Statementregistration statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Sectionsection 8(a), may determine.

 

 

 


The information in this preliminary prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any state or other jurisdiction where the offer or sale is not permitted.

 

SUBJECT TO COMPLETION, DATED JUNE 13, 2013DECEMBER 29, 2020

PRELIMINARY PROSPECTUS

LOGO

10,434,782 Shares of Common Stock

Pre-Funded Warrants to Purchase up to 10,434,782 Shares of Common Stock

Common Warrants to Purchase 10,434,782 Shares of Common Stock

Placement Agent Warrants to Purchase up to 521,739 Shares of Common Stock

 

 

LOGO

Shares

Common Stock

$             per share

This is the initial public offering of Conatus Pharmaceuticals Inc. We are offering in a best-efforts offering up to 10,434,782 shares of our common stock, par value $0.0001 per share, and accompanying common warrants to purchase 10,434,782 shares of our common stock, at an assumed combined purchase price of $         per share of common stock and accompanying common warrant. The accompanying common warrants will be immediately exercisable and will expire five years from the date of issuance. Each common warrant has an exercise price of $         per share of common stock. Prior

We are also offering to certain purchasers, if any, whose purchase of shares of common stock in this offering there has been no public market forwould otherwise result in the purchaser, together with its affiliates and certain related parties, beneficially owning more than 4.99% (or, at the election of the purchaser, 9.99%) of our outstanding common stock immediately following the consummation of this offering, the opportunity to purchase, if any such purchaser so chooses, pre-funded warrants, in lieu of shares of common stock that would otherwise result in such purchaser’s beneficial ownership exceeding 4.99% (or, at the election of the purchaser, 9.99%) of our outstanding common stock. We estimateEach pre-funded warrant is exercisable for one share of common stock and will be accompanied by a common warrant to purchase one share of common stock. The purchase price of each pre-funded warrant will be equal to the price at which a share of common stock is sold to the public in this offering, minus $0.0001, and the exercise price of each pre-funded warrant will be $0.0001 per share. The pre-funded warrants will be immediately exercisable and may be exercised at any time until all of the pre-funded warrants are exercised in full. For each pre-funded warrant we sell, the number of shares of common stock we are offering will be decreased on a one-for-one basis.

The shares of common stock, or pre-funded warrants, if applicable, and the common warrants can only be purchased together in this offering but will be issued separately and each security will be immediately separable upon issuance.

There is no minimum number of securities or minimum aggregate amount of proceeds for this offering to close. The offering of the securities will terminate on the first date that we enter into securities purchase agreements to sell the initialsecurities offered hereby.

Our common stock is listed on The Nasdaq Capital Market under the symbol “HSTO”. On December 28, 2020, the closing price as reported on The Nasdaq Capital Market was $1.15 per share. The actual public offering price per share of common stock, or pre-funded warrant, if applicable, and accompanying common warrant will be determined at the time of pricing, and may be at a discount to the then current market price. The recent market price used throughout this prospectus may not be indicative of the final offering price. The final public offering price will be determined through negotiation between $us and $             per share.

We have appliedinvestors based upon a number of factors, including our history and our prospects, the industry in which we operate, our past and present operating results, the previous experience of our executive officers and the general condition of the securities markets at the time of this offering. There is no established public trading market for the pre-funded warrants, the common warrants or the placement agent’s warrants and we do not expect a market to develop. Without an active trading market, the liquidity of the warrants will be limited. In addition, we do not intend to list ourthe pre-funded warrants, the common stockwarrants or the placement agent’s warrants on The NASDAQ GlobalNasdaq Capital Market, under the symbol “CNAT.”

We are an “emerging growth company” as defined by the Jumpstart Our Business Startups Act of 2012 and, as such, we have elected to comply with certain reduced public company reporting requirements for this prospectus and future filings.any other national securities exchange or any other trading system.

 

 

Investing in our common stocksecurities involves a high degree of risk.

See “Risk Factors” beginning on page 9.9 of this prospectus.

 

 

Per ShareTotal

Initial public offering price

$$

Underwriting discounts and commissions

$$

Proceeds, before expenses, to us

$$

We have granted the underwriters a 30-day option to purchase a total of up to              additional shares of common stock on the same terms and conditions set forth above.

Certain of our current stockholders have indicated an interest in purchasing an aggregate of approximately $10.0 million of shares of our common stock in this offering. However, because indications of interest are not binding agreements or commitments to purchase, the underwriters may determine to sell more, less or no shares in this offering to any of these stockholders, or any of these stockholders may determine to purchase more, less or no shares in this offering.

The underwriters expect to deliver shares of common stock to purchasers on             , 2013.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

 

Per Share and
Accompanying
Common
Warrant
Per
Pre-Funded
Warrant and
Accompanying
Common
Warrant
Total

StifelPublic offering price

Piper JaffrayPlacement agent fees (1)

Proceeds to us, before expenses (2)

 

1.

We have agreed to reimburse H.C. Wainwright & Co., LLC (the “Placement Agent”) for certain of its offering-related expenses. In addition, we have agreed to issue to the Placement Agent warrants to purchase up to a number of shares of our common stock equal to 5.0% of the aggregate number of shares of common stock and pre-funded warrants sold in this offering at an exercise price equal to 125% of the public offering price of the shares common stock. See “Plan of Distribution” for additional information and a description of the compensation payable to the Placement Agent.

2.

We estimate the total expenses of this offering payable by us, excluding the placement agent fee, will be approximately $        .

JMP SecuritiesDelivery of the shares of common stock, the pre-funded warrants, if any, and the common warrants is expected to be made on or about                , 2020, subject to satisfaction of customary closing conditions.

 

SunTrust Robinson HumphreyH.C. Wainwright & Co.

The date of this prospectus is                , 2013.2020.



TABLE OF CONTENTS

 

Page

Prospectus SummaryPROSPECTUS SUMMARY

   1 

Risk FactorsRISK FACTORS

   9 

Special Note Regarding Forward-Looking StatementsSPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

   3747 

Use of ProceedsUSE OF PROCEEDS

   3848 

Dividend PolicyMARKET FOR OUR COMMON STOCK AND RELATED STOCKHOLDER MATTERS

   3949 

CapitalizationCAPITALIZATION

   4050 

DilutionDILUTION

   4252 

Selected Consolidated Financial DataMANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

   4454 

Management’s Discussion and Analysis of Financial Condition and Results of OperationsBUSINESS

   4666 

BusinessMANAGEMENT

   5991 

ManagementEXECUTIVE COMPENSATION

   88100 

Executive and Director CompensationPRINCIPAL STOCKHOLDERS

   96107 

Certain Relationships and Related Person TransactionsCERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

   116109 

Principal StockholdersPLAN OF DISTRIBUTION

   121110 

Description of Capital StockDESCRIPTION OF SECURITIES

   126113 

Shares Eligible for Future SaleLEGAL MATTERS

   131120 

Material United States Federal Income Tax Consequences to Non-U.S. Holders of Common StockEXPERTS

   134120 

UnderwritingWHERE YOU CAN FIND MORE INFORMATION

   138120 

Legal Matters

145

Experts

145

Where You Can Find More Information

145

Index to Financial StatementsINDEX TO CONSOLIDATED FINANCIAL STATEMENTS

   F-1 

 

 

Until             , 2013 (25 days afterWe have not, and the commencement of this offering), all dealers that buy, sellPlacement Agent has not, authorized anyone to provide any information or trade shares of our common stock, whether or not participatingto make any representations other than those contained in this offering, may be requiredprospectus or in any free writing prospectuses prepared by or on behalf of us or to deliver a prospectus. This delivery requirement is in additionwhich we have referred you. We take no responsibility for, and can provide no assurance as to the obligationreliability of, dealersany other information that others may give you. This prospectus is an offer to deliver a prospectus when acting as underwriterssell only the securities offered hereby, and with respectonly under circumstances and in jurisdictions where it is lawful to their unsold allotments or subscriptions.

Unless otherwise indicated,do so. The information contained in this prospectus concerningor in any applicable free writing prospectus is current only as of its date, regardless of its time of delivery or any sale of our industrysecurities. Our business, financial condition, results of operations and prospects may have changed since that date.

For investors outside the United States: We have not, and the marketsPlacement Agent has not, done anything that would permit this offering or possession or distribution of this prospectus in whichany jurisdiction where action for that purpose is required, other than in the United States. Persons outside the United States who come into possession of this prospectus must inform themselves about, and observe any restrictions relating to, the offering of the securities and the distribution of this prospectus outside the United States.


In this prospectus, we operate, includingrely on and refer to information and statistics regarding our general expectationsindustry. We obtained these statistical, market, and market position, market opportunityother industry data and market share, is based on information from our own management estimates and research, as well as from industry and general publications and research, surveys and studies conducted by third parties. Management estimates are derivedforecasts from publicly available information, our knowledge of our industry and assumptions based on such information and knowledge, which we believe to be reasonable. Our management estimates have not been verified by any independent source, and we have not independently verified any third-party information. In addition, assumptions and estimates of our and our industry’s future performance are necessarily subject to a high degree of uncertainty and risk due to a variety of factors, including those described in “Risk Factors.” These and other factors could cause our future performance to differ materially from our assumptions and estimates. See “Special Note Regarding Forward-Looking Statements.”

We use our registered trademark, CONATUS PHARMACEUTICALS, in this prospectus. This prospectus also includescontains references to our trademarks tradenames and service marks that are the property ofto trademarks and trade names belonging to other organizations.entities. Solely for convenience, trademarks and tradenamestrade names referred to in this prospectus, including logos, artwork and other visual displays, may appear without the® andor TM symbols, but thosesuch references are not intended to indicate, in any way, that wetheir respective owners will not assert, to the fullest extent under applicable law, their rights thereto. We do not intend our rightsuse or thatdisplay of other companies’ trade names or trademarks to imply a relationship with, or endorsement or sponsorship of us by, any other companies.

Unless the applicable owner will not assertcontext requires otherwise, references in this prospectus to “Histogen,” “we,” “us”, “our”, the “Registrant” and the “Company” refer Histogen Inc., together with its rights, to these trademarks and tradenames.wholly-owned subsidiaries.


PROSPECTUS SUMMARY

This summary highlightsprovides an overview of selected information contained elsewhere in this prospectus. This summaryprospectus and does not contain all of the information you should consider before investing in our common stock.securities. You should carefully read this entire prospectus carefully, especiallyand the registration statement of which this prospectus is a part in their entirety before investing in our securities, including the information discussed under “Risk Factors” beginning on page 9 and our historical and pro forma financial statements and notes thereto that appear elsewhere in this prospectus.

Overview

Histogen is a clinical-stage therapeutics company focused on developing potential first-in-class restorative therapeutics that ignite the body’s natural process to repair and maintain healthy biological function.

Histogen’s technology is based on the discovery that growing fibroblast cells under simulated embryonic conditions induces them to become multipotent with stem cell like properties. The environment created by Histogen’s proprietary process mimics the conditions within the womb—very low oxygen and suspension. When cultured under these conditions, the fibroblast cells generate biological materials, growth factors and proteins, that have the potential to stimulate a person’s own stem cells to activate and replace/regenerate damaged cells and tissue. Histogen’s proprietary, reproducible manufacturing process provides targeted solutions that harness the body’s inherent regenerative power across a broad range of therapeutic indications including hair growth, joint cartilage regeneration, spinal disc repair and dermal rejuvenation.

Histogen’s reproducible manufacturing process yields multiple biologic products from a single bioreactor, including cell conditioned medium (CCM), human extracellular matrix (hECM) and hair stimulating complex (HSC), creating a spectrum of products for a variety of markets from one core technology.

Human Multipotent Cell Conditioned Media, or CCM: A soluble multipotent CCM that is the starting material for products for skin care and other applications. The liquid complex produced through Histogen’s manufacturing process contains soluble biologicals with a diverse range of embryonic-like proteins. Because the cells produce and secrete these factors while developing the extracellular matrix, or ECM, these proteins are naturally infused into the liquid media in a stabilized form. The CCM contains a diverse mixture of cell-signaling materials, including human growth factors such as Keratinocyte Growth Factor, soluble human ECM proteins such as collagen, and vital proteins which support the epidermal stem cells that renew skin throughout life.

Human Extracellular Matrix, or hECM: An insoluble hECM for applications such as orthopedics and soft tissue augmentation, which can be fabricated into a variety of structural or functional forms for tissue engineering and clinical applications. The hECM produced through Histogen’s proprietary process is a novel, all-human, naturally secreted material. It is most similar to early embryonic structural tissue which provides the framework and signals necessary for cell in-growth and tissue development. By producing similar ECM materials to those that aided in the original formation of these tissues in the embryo, regenerative cells are supported in vitro and have shown potential as therapeutics in vivo.

Hair Stimulating Complex, or HSC: A soluble biologic comprised of growth factors involved in the signaling of cells in the body, particularly those factors known to be important in hair formation and the stimulation of resting hair follicles.



Histogen currently has two product candidates in development intended to address what it believes to be underserved, multibillion-dollar global markets, and Histogen has an asset previously developed by Conatus Pharmaceuticals Inc. (“Conatus”) that it retained development and commercialization rights to, emricasan, which it is jointly developing with its partner, Amerimmune LLC (“Amerimmune”):

HST-001 is a hair stimulating complex, or HSC, intended to be a physician-administered therapeutic for alopecia (hair loss). HST-001 is minimally-invasive and has been shown in early studies to stimulate resting hair follicles to produce new cosmetically-relevant hair. In May of 2020, Histogen initiated its Phase 1b/2a clinical trial of HST-001, designed to assess the safety, tolerability and indicators of efficacy of HST-001 for the treatment of androgenic alopecia in men. In December of 2020, Histogen announced preliminary week 18 results for the primary efficacy endpoint which supported that patients treated with HST-001 demonstrated separation from placebo patients for absolute change from baseline in total hairs (terminal and vellus) in the target area (TAHC) in the vertex as measured by Canfield’s Hairmetrix macrophotography system, though these preliminary data have not indicated statistical significance. HST-001 was also shown to be safe and well tolerated at week 18 as compared to placebo with no reports of serious adverse events. Histogen anticipates completing the study and reporting the final results from the week 26 assessments, along with its plans for further clinical development of HST-001, in early first quarter of 2021.

HST-003 is a human extracellular matrix, or hECM, intended for regenerating hyaline cartilage for the treatment of articular cartilage defects in the knee, with a novel malleable scaffold that stimulates the body’s own stem cells. In September 2020, we were awarded a $2.0 million grant by the Peer Reviewed Orthopedic Research Program (PRORP) of the U.S. Department of Defense (“DoD”) to partially fund a Phase 1/2 clinical trial of HST-003 for regeneration of cartilage in the knee. In December of 2020, Histogen filed an investigational new drug application (“IND”) for the initiation of a Phase 1/2 clinical trial to evaluate the safety and efficacy of for HST-003 and expects to initiate a Phase 1 trial in the first quarter of 2021. The U.S. Army Medical Research Acquisition Activity, 820 Chandler Street, Fort Detrick MD 21702, is the awarding and administering acquisition office. The views expressed in this filing are those of Histogen and may not reflect the official policy or position of the Department of the Army, Department of Defense, or the U.S. Government.

Emricasan is an orally active, pan-caspase inhibitor being jointly developed with Histogen’s partner Amerimmune for the potential treatment of COVID-19. On October 26, 2020, Histogen entered into a Collaborative Development and Commercialization Agreement with Amerimmune, pursuant to which Amerimmune, at its expense and in collaboration with us, shall use commercially reasonable efforts to lead the development activities for emricasan. Histogen has filed and received permission for an IND from the FDA to initiate a Phase 1 study of emricasan in mild COVID-19 patients to assess safety and tolerability. Histogen, along with its partner Amerimmune, anticipate initiating a Phase 1 study in the first quarter of 2021.

Additionally, Histogen has two pre-clinical programs, HST-004, which is a CCM scaffold intended to be administered through an interdiscal injection for spinal disc repair and HST-002, which is a human-derived collagen and extracellular matrix dermal filler intended to be injected into the dermis for the treatment of facial folds and wrinkles. Early preclinical research has shown that HST-004 stimulates stem cells from spinal disc to proliferate and secrete aggrecan and collagen II. HST-004 was shown to reduce inflammation and protease activity and upregulate aggrecan production in an ex vivo spinal disc model. HST 002, our hECM filler, provides the natural proteins found in young, healthy skin all-human and naturally produced collagen with dermal matrix proteins.



Based upon the FDA’s recent communications that HST-002 will be regulated as a drug-biologicdevice combination product, we are evaluating the impact to our clinical timeline and expect to provide an update in the first quarter of 2021.

Histogen has also developed a non-prescription topical skin care ingredient utilizing CCM that harnesses the power of growth factors and other cell signaling molecules to support our epidermal stem cells, which renew skin throughout life. The CCM ingredient for skin care currently generates product revenue from Allergan Sales LLC (“Allergan”), who formulates the ingredient into their skin care product lines in spas and professional offices.

Merger

On January 28, 2020, the Company, then operating as Conatus, entered into an Agreement and Plan of Merger and Reorganization, as amended (the “Merger Agreement”), with privately-held Histogen Inc. (“Private Histogen”) and Chinook Merger Sub, Inc., a wholly-owned subsidiary of Conatus (“Merger Sub”). Under the Merger Agreement, Merger Sub merged with and into Private Histogen, with Private Histogen surviving as a wholly-owned subsidiary of the Company (the “Merger”). On May 26, 2020, the Merger was completed. Conatus changed its name to Histogen Inc., and Private Histogen, which remains as a wholly-owned subsidiary of the Company, changed its name to Histogen Therapeutics Inc. On May 27, 2020, the combined Company’s common stock began trading on The Nasdaq Capital Market under the ticker symbol “HSTO”.

Pursuant to the terms of the Merger Agreement, each outstanding share of Private Histogen common stock outstanding immediately prior to the closing of the Merger was converted into approximately 0.14342 shares of Company common stock (the “Exchange Ratio”), after taking into account the Reverse Stock Split, as defined below. Immediately prior to the closing of the Merger, all shares of Private Histogen preferred stock then outstanding were exchanged into shares of common stock of Private Histogen. In addition, all outstanding options exercisable for common stock of Private Histogen and warrants exercisable for common stock of Private Histogen became options and warrants exercisable for the same number of shares of common stock of the Company multiplied by the Exchange Ratio. Immediately following the Merger, stockholders of Private Histogen owned approximately 71.3% of the outstanding common stock of the combined company.

On May 26, 2020, in connection with, and prior to the completion of, the Merger, the Company effected a one-for-ten reverse stock split of its then outstanding common stock (the “Reverse Stock Split”). The par value and the authorized shares of the common stock were not adjusted as a result of the Reverse Stock Split. All of the Company’s issued and outstanding common stock have been retroactively adjusted to reflect this Reverse Stock Split for all periods presented. All issued and outstanding Private Histogen common stock, convertible preferred stock, options and warrants prior to the effective date of the Merger have been retroactively adjusted to reflect the Exchange Ratio for all periods presented.

Risks Associated with Our Business and this Offering

Our business and our ability to implement our business strategy are subject to numerous risks, as more fully described in the section inof this prospectus entitled “Risk Factors” beginning. You should read these risks before you invest in our securities. We may be unable, for many reasons, including those that are beyond our control, to implement our business strategy. In particular, risks associated with our business include:

We are a clinical-stage company, have a very limited operating history, are not currently profitable, do not expect to become profitable in the near future and may never become profitable;



We are dependent on page 8the success of one or more of our current product candidates and we cannot be certain that any of them will receive regulatory approval or be commercialized;

Our financial statements include an explanatory paragraph that expresses substantial doubt on our ability to continue as a going concern, and we must raise additional funds to finance our operations to remain a going concern; and

Given our lack of current cash flow, we will need to raise additional capital; however, it may be unavailable to us or, even if capital is obtained, may cause dilution or place significant restrictions on our ability to operate our business.

Risks associated with this offering include:

We have broad discretion in the use of the net proceeds from this offering and may not use them effectively.

You will experience immediate and substantial dilution in the net tangible book value of the shares you purchase in this offering and may experience additional dilution in the future.

Even if this offering is successful, we will need additional funding to continue our operations. If we are unable to raise capital when needed, we could be forced to delay, reduce, or eliminate our preclinical studies and clinical trials, engage in one or more potential transactions, or cease our operations entirely.

There is no public market for the warrants or pre-funded warrants being offered by us in this offering.

The warrants and pre-funded warrants are speculative in nature.

Holders of the warrants offered hereby will have no rights as common stockholders with respect to the shares our common stock underlying the warrants until such holders exercise their warrants and acquire our common stock, except as otherwise provided in the warrants.

This is a best efforts offering, no minimum amount of securities is required to be sold, and we may not raise the amount of capital we believe is required for our business plans.

License Agreement

Allergan License and Supply Agreements

In July 2017, the Company and Allergan entered into a letter agreement to transfer Suneva Medical, Inc.’s Amended and Restated License and Supply Agreements (collectively the “Allergan Agreements”) to Allergan, which grants exclusive rights to commercialize our CCM skin care ingredient worldwide, excluding South Korea, China and India, in exchange for royalty payments to us based on Allergan’s sales of product including the licensed ingredient. Through September 30, 2020, we entered into several amendments to the Allergan Agreements to, among other things, expand Allergan’s license rights, identify exclusive and non-exclusive fields of use and clarify responsibilities with response to regulatory filings. For these amendments to the License Agreements, we have received cash payments of $19.5 million through September 30, 2020. The Allergan Agreements also include a potential future milestone payment of $5.5 million if Allergan’s net sales of products containing our CCM skin care ingredient exceeds $60 million in any calendar year through December 31, 2027.

From time to time, we may improve our CCM skin care ingredient, and to the extent that these are within the field of use in the Allergan Agreements, we will provide the improvements to Allergan. The remaining performance obligations related to the Allergan Agreements from 2017 were our obligations to



supply CCM and provide potential future improvements to Allergan, for which our obligation to supply CCM was satisfied during the fourth quarter of 2019.

On January 17, 2020, we and Allergan amended the Allergan Agreements, further clarifying the fields of use, the product definition and rights to certain improvements, as well as us agreeing to supply additional CCM and provide further technical assistance to Allergan (the cost of which shall be reimbursed to us), for a one-time payment of $1.0 million to us.

Allergan may terminate the agreement for convenience upon one business days’ notice to us. Under the Amended and Restated License Agreement, as amended, Allergan will indemnify us for third party claims arising from Allergan’s breach of the agreement, negligence or willful misconduct, or the exploitation of products by Allergan or its sublicensees. We will indemnify Allergan for third party claims arising from our breach of the agreement, negligence or willful misconduct, or the exploitation of products by us prior to the effective date.

Corporate History and Reorganization

We were incorporated under the laws of Delaware under the name Conatus Pharmaceuticals, Inc. as a private company in July 2005. We completed our initial public offering in July 2013. In May 2020, we acquired Histogen Therapeutics, Inc. (formerly known as Histogen, Inc.) through its merger with a wholly owned subsidiary of ours, with Histogen Therapeutics surviving as our wholly-owned subsidiary. As part of that transaction, Conatus Pharmaceuticals, Inc. changed its name to Histogen Inc. Our principal executive offices are located at 10655 Sorrento Valley Road, Suite 200, San Diego, CA 92121 and our telephone number is (858) 526-3100. Our website is www.histogen.com. Information contained on, or that can be accessed through, our website is not incorporated by reference into this prospectus, and you should not consider information on our website to be part of this prospectus. We have included our website address as an inactive textual reference only.



The Offering

Common stock offered by us

10,434,782 shares.

Pre-funded warrants offered by us

We are also offering to those purchasers, if any, whose purchase of common stock in this offering would otherwise result in the purchaser, together with its affiliates and certain related parties, beneficially owning more than 4.99% (or, at the election of the purchaser, 9.99%) of our outstanding common stock immediately following the consummation of this offering, the opportunity to purchase, if the purchaser so chooses, pre-funded warrants in lieu of shares of common stock that would otherwise result in the purchaser’s beneficial ownership exceeding 4.99% (or, at the election of the purchaser, 9.99%) of our outstanding common stock. Each pre-funded warrant is being sold with one common warrant to purchase one share of our common stock. The purchase price of each prefunded warrant and accompanying common warrant (as described below) will be equal to the price at which a share of common stock and accompanying common warrant is being sold to the public in this offering, minus $0.0001.

The pre-funded warrants and common warrants will be issued separately. The exercise price of each pre-funded warrant will equal $0.0001 per share. Each pre-funded warrant will be exercisable upon issuance and will not expire prior to exercise.

For each pre-funded warrant we sell, the number of shares of common stock we are offering will be decreased on a one-for-one basis. This prospectus also relates to the offering of the shares of our common stock issuable upon exercise of the pre-funded warrants. Because we will issue a common warrant for each share of our common stock and for each pre-funded warrant to purchase one share of our common stock sold in this offering, the number of common warrants sold in this offering will not change as a result of a change in the mix



of the shares of our common stock and pre-funded warrants sold.

Common warrants offered by us

Common warrants to purchase up to 10,434,782 shares of common stock, which will be exercisable during the period commencing on the date of their issuance and ending five years from such date at an exercise price per share of common stock equal to $         , or     % of the combined public offering price per share of common stock and accompanying common warrant, or pre-funded warrant and accompanying common warrant, in this offering. This prospectus also relates to the offering of the shares of common stock issuable upon exercise of the warrants.

Common stock outstanding after this offering

                shares(1) (assuming we sell only shares of common stock and assuming no exercise of the pre-funded warrants and the common warrants).

Use of proceeds

The net proceeds from our sale of shares of our common stock and accompanying common warrants and pre-funded warrants and accompanying common warrants in this offering will be approximately $10.6 million. This is based on an assumed public offering price of $1.15 per share and accompanying warrant, which is the last reported trading price of our common stock on The Nasdaq Capital Market on December 28, 2020, after deducting the estimated Placement Agent fees and commissions and estimated offering expenses payable by us. We intend to use the net proceeds from this offering for general corporate purposes, including, but are not limited to, the funding of clinical development of and pursuing regulatory approval for our product candidates, and general and administrative expenses. Our management will retain broad discretion over the allocation of the net proceeds from the sale of the securities.

Dividend policy

We have never paid cash dividends on our common stock. We currently anticipate that we will retain future earnings for the development, operation and expansion of



our business and do not anticipate declaring or paying any cash dividends for the foreseeable future.

Risk Factors

Investing in our securities involves a high degree of risk. You should carefully review and consider the “Risk Factors” section of this prospectus for a discussion of factors to consider before deciding to invest in our securities.

Nasdaq listing and symbol

Our common stock is quoted on The Nasdaq Capital Market under the symbol “HSTO”. There is no established trading market for the common warrants or the pre-funded warrants, and we do not expect a trading market to develop. We do not intend to list the common warrants or the pre-funded warrants on any securities exchange or other trading market. Without a trading market, the liquidity of the common warrants or pre-funded warrants will be extremely limited.

(1)

The above discussion and table are based on 12,487,973 shares outstanding as of September 30, 2020. The discussion and table do not include, as of that date:

4,929 shares of common stock issuable upon the exercise of a warrants outstanding as of September 30, 2020 at a weighted average exercise price of $37.07 per share;

1,499,123 shares of common stock issuable upon the exercise of options outstanding as of September 30, 2020 at a weighted average exercise price of $5.92 per share;

725,881 shares of common stock reserved for future issuance Histogen Inc. 2020 Incentive Award Plan, and any future automatic increase in shares reserved for issuance under such plan; and

2,522,784 shares of our common stock issued subsequent to September 30, 2020, in a registered direct offering, with H.C. Wainwright & Co., LLC acting as placement agent at a price of $1.78375 per share; and

2,018,227 shares of our common stock issuable upon exercise of warrants issued subsequent to September 30, 2020 in a concurrent private placement offering, with H.C. Wainwright & Co., LLC acting as placement agent at a weighted average exercise price of $1.73.

Except as otherwise indicated herein, all information in this prospectus assumes no sale of pre-funded warrants, which, if sold, would reduce the number of shares of common stock that we are offering on a one-for-one basis, and no exercise of options issued under our equity incentive plan, warrants described above, or warrants being issued in this offering, including the Placement Agent Warrants.



RISK FACTORS

Investing in our securities involves a high degree of risk. You should consider carefully the risks described below, together with all of the other information included or incorporated by reference in this prospectus. The risks described below are material risks currently known, expected or reasonably foreseeable by us. However, the risks described below are not the only ones that we face. Additional risks not presently known to us or that we currently deem immaterial may also affect our business, operating results, prospects or financial statementscondition. If any of these risks actually materialize, our business, prospects, financial condition, and results of operations could be seriously harmed. This could cause the related notes thereto appearing attrading price of our common stock to decline, resulting in a loss of all or part of your investment.

Risks Related to this Offering

We have broad discretion in the enduse of the net proceeds from this offering and may not use them effectively.

Our management will have broad discretion in the application of the net proceeds, including for any of the purposes described in the section of this prospectus before making an investment decision. As used in this prospectus, unless the context otherwise requires, references to “we,entitled “Use of Proceeds “us,” “our,” “our company” and “Conatus” refer to Conatus Pharmaceuticals Inc.

Overview

Our Company

We are a biotechnology company focused. You will be relying on the development and commercializationjudgment of novel medicinesour management with regard to treat liver disease. We are developing our lead compound, emricasan, for the treatment of patients in orphan populations with chronic liver disease and acute exacerbations of chronic liver disease. To date, emricasan has been studied in over 500 subjects in ten clinical trials. In a randomized Phase 2b clinical trial in patients with liver disease, emricasan demonstrated a statistically significant, consistent, rapid and sustained reduction in elevated levels of two key biomarkers of inflammation and cell death, alanine aminotransferase, or ALT, and cleaved Cytokeratin 18, or cCK18, respectively, both of which are implicated in the severity and progression of liver disease. Our initial development strategy targets indications for emricasan with high unmet clinical need in orphan patient populations, such as patients with acute-on-chronic liver failure, or ACLF, chronic liver failure, or CLF, and patients who have developed liver fibrosis post-orthotopic liver transplant due to Hepatitis C virus infection, or HCV-POLT. We expect to initiate a Phase 2b ACLF trial and a Phase 3 HCV-POLT trial (currently designated a Phase 3 registration study in the European Union and a Phase 2b study in the United States) in the second half of 2013 and a Phase 2b CLF trial in the second half of 2014.

Emricasan is a first-in-class, orally active caspase protease inhibitor designed to reduce the activity of enzymes that mediate inflammation and cell death, or apoptosis. We believe that by reducing the activityuse of these enzymes, emricasan hasnet proceeds, and you will not have the potentialopportunity, as part of your investment decision, to interruptassess whether the progression of liver disease. We have observed compelling preclinical and clinical trial results that suggest emricasan may have clinical utility in slowing progression of liver diseases regardless of the original cause of the disease. In particular, we have completed two placebo-controlled Phase 2 trials in patients with liver disease showing statistically significant reductions in ALT levels that occur rapidly, within as little as one day after initiation of therapy, andnet proceeds are maintained throughout the treatment period. Inbeing used appropriately. The failure by our 204-patient Phase 2b trial, we also measured cCK18, an important biomarker of apoptosis and disease severity. Statistically significant reductions in cCK18 were demonstrated in this trial as early as three hours post-dosing and were maintained for the duration of dosing. Emricasan has been generally well-tolerated in all of the clinical studies.

Overview of Liver Disease

Liver disease can result from injurymanagement to the liver caused by a variety of insults, including Hepatitis C virus, or HCV, Hepatitis B virus, obesity, chronic excessive alcohol use or autoimmune diseases. Regardless of the underlying cause of the disease, there are important similarities in the disease progression including increased inflammatory activity and excessive liver cell apoptosis, which if unresolved leads to fibrosis. Fibrosis, if allowed to progress, will lead to cirrhosis, or excessive scarring of the liver, which mayapply these funds effectively could result in reduced liver function. Some patients with liver cirrhosisfinancial losses that could have a partially functioning liver and may appear asymptomatic for long periods of time, which is referred to as compensated liver disease. Whenmaterial adverse effect on our business, cause the liver is unable to perform its normal functions this is referred to as decompensated liver disease. ACLF occurs in patients who have compensated or decompensated cirrhosis but are in relatively stable condition until an acute event sets off a rapid worsening of liver function. Patients with CLF suffer from continual disease progression which may eventually lead them to require orthotopic liver transplantation. Patients with HCV who receive orthotopic liver transplants, in which the diseased liver is replaced by a donor liver, will have their HCV infections recur. Many of these HCV-POLT patients will experience accelerated development of fibrosis and progression to cirrhosis of the transplanted liver due to the recurrence of HCV.

The National Institutes of Health estimates that 5.5 million Americans have chronic liver disease or cirrhosis, and liver disease is the twelfth leading cause of death in the United States. According to the European Association for the Study of the Liver, 29 million Europeans have chronic liver disease and liver disease represents approximately two percent of deaths annually. In the United States, more than 5,000 liver transplants are performed in adults and more than 500 in children annually, with approximately 17,000 subjects still awaiting transplant. We are planning to study the effectiveness of emricasan in defined subsets of patients with liver disease. ACLF, CLF and HCV-POLT are potential orphan indications in both the United States and European Union, or EU. We estimate that the target populations for emricasan in these indications in the United States and the EU are approximately 150,000 ACLF patients, 10,000 CLF patients and 50,000 HCV-POLT patients.

Clinical Development Plans

We have designed a comprehensive clinical program to demonstrate the therapeutic benefit of emricasan across the spectrum of fibrotic liver disease. We plan to study emricasan in patients with rapidly progressing fibrosis (HCV-POLT) as well as in patients with established liver cirrhosis and decompensated disease (ACLF and CLF).

LOGO

(1)

This trial is currently designated a Phase 3 registration study in the EU and a Phase 2b study in the United States.

ACLF

We plan to initiate a 60-patient Phase 2b dose ranging clinical trial in ACLF patients in the United Kingdom in the second half of 2013. The primary objective in this 28-day dosing study will be to evaluate the pharmacokinetics and pharmacodynamics together with the safety of emricasan in this patient population. We also plan to measure time to clinical worsening, or TTCW, which is defined as the first occurrence of liver transplant, progression to next organ failure or death. We anticipate TTCW will be the primary efficacy endpoint for our planned Phase 3 studies in ACLF and our planned Phase 2b study in CLF. Changes in ALT, aspartate aminotransferase, or AST, cCK18 and the components of the Model for End-Stage Liver Disease, or MELD score (a scoring system for assessing the severity of chronic liver disease), will also be measured in the study. We anticipate results from the trial will be available during the first half of 2014 and we expect the data from this trial will be used in supportprice of our planned end of Phase 2b meetings with both U.S.securities to decline and EU regulatory authorities to finalize the protocol for our planned Phase 3 trial in ACLF. We expect emricasan to be dosed up to six months in the Phase 3 trial.

CLF

We plan to initiate an approximately 100-patient Phase 2b study in patients with CLF in the second half of 2014 after completion of the ACLF Phase 2b trial. It is expected that emricasan will be dosed for one to three months and the endpoints in this study will include TTCW as well as changes in ALT, AST and cCK18 levels. The data from the ACLF dose ranging study is expected to serve as the basis for dose selection in this study.

HCV-POLT

We are planning a 260-patient, randomized, double-blind, placebo-controlled trial in the HCV-POLT population that we expect may serve as a single Phase 3 registration study to support a marketing authorization application filing in the EU. This study is designed to demonstrate emricasan’s ability to stabilize or slow the progression of liver fibrosis. If emricasan demonstrates the ability to halt the progression of fibrosis, we believe this could serve as a basis to study emricasan in additional indications in liver disease in the future. In addition, the safety data from this study will be part of the overall safety database required for approval of emricasan in other indications. The study will be a two-year dosing study with a three-year follow up. The primary endpoint will be liver histology, specifically the presence or absence of disease progression as measured by the standard Ishak Fibrosis Score, which stages the severity of fibrosis and/or cirrhosis on a 0-6 scale. Changes in ALT, AST and cCK18 will also be measured in this study. This study is currently designated as Phase 3 in the EU and Phase 2b in the United States. We expect to initiate this trial in the second half of 2013.

Subject to the results of our planned clinical trials and any regulatory-approved product labeling, we currently anticipate that emricasan, if approved, would be prescribed by physicians to be dosed for 28 days, but potentially as long as six months, in the ACLF patient population, one to three months in the CLF patient population and up to two years in the HCV-POLT patient population.

Our Team

Our management team is comprised of the former senior executives of Idun Pharmaceuticals Inc., or Idun, and our Chief Medical Officer was the clinical program leader for emricasan during its development at Pfizer Inc. At Idun, these senior executives discovered and leddelay the development of emricasan, Idun’s lead asset, which was then knownour product candidates. Pending the application of these funds, we may invest the net proceeds from this offering in a manner that does not produce income or that loses value.

You will experience immediate and substantial dilution in the net tangible book value of the shares you purchase in this offering and may experience additional dilution in the future.

The combined public offering price per share of common stock and related warrant, and the combined public offering price of each pre-funded warrant and related warrant, will be substantially higher than the as IDN-6556, untiladjusted net tangible book value per share of our common stock after giving effect to this offering. Assuming the company was soldsale of 10,434,782 shares of our common stock and warrants to Pfizerpurchase up to 10,434,782 shares of common stock at an assumed combined public offering price of $1.15 per share and related warrant, the closing sale price per share of our common stock on the Nasdaq Capital Market on December 28, 2020, assuming no sale of any pre-funded warrants in July 2005 forthis offering, no exercise of the warrants being offered in this offering and after deducting the Placement Agent fees and commissions and estimated offering expenses payable by us, you will incur immediate dilution of approximately $298 million. We acquired the global rights to emricasan from Pfizer, where it was known as PF-3491390, in July 2010. At both Idun and Pfizer, emricasan was being developed for the treatment of liver fibrosis.$0.33 per share. As a result of the dilution to investors purchasing securities in this offering, investors may receive significantly less than the purchase price paid in this offering, if anything, in the event of the liquidation of our collective experience,company. See the section entitled “Dilution” below for a more detailed discussion of the dilution you will incur if you participate in this offering. To the extent shares are issued under outstanding options and warrants at exercise prices lower than the public offering price of our common stock in this offering, you will incur further dilution.

Even if this offering is successful, we will need additional funding to continue our operations. If we are unable to raise capital when needed, we could be forced to delay, reduce, or eliminate our preclinical studies and clinical trials, engage in one or more potential transactions, or cease our operations entirely.

Even if this offering is successful, we will need to secure additional resources to support our continued operations, including resources needed to complete our preclinical studies and clinical trials of our product candidates, and to manufacture and market any product candidates in the event they

are approved for commercial sale, plus resources for engaging in potential business development activities. If we are unable to raise additional capital, we may seek to engage in one or more potential transactions, such as the sale of our company, a strategic partnership with one or more parties or the licensing, sale or divestiture of some of our assets or proprietary technologies, or we may be forced to cease our operation entirely. There can be no assurance that we will be able to enter into such a transaction or transactions on a timely basis or on terms that are favorable to us. If we are unable to raise capital when needed or on attractive terms, or should we engage in one or more potential strategic transactions, we could be forced to delay, reduce, or eliminate our preclinical studies and clinical trials or any future commercialization efforts. If we determine to change our business strategy or to seek to engage in a strategic transaction, our future business, prospects, financial position and operating results could be significantly different than those in historical periods or projected by our management. Because of the significant uncertainty regarding these events, we are not able to accurately predict the impact of any potential changes in our existing business strategy.

There is no public market for the warrants or pre-funded warrants being offered by us in this offering.

There is no established public trading market for the warrants or the pre-funded warrants, and we do not expect a market to develop. In addition, we do not intend to apply to list the warrants or pre-funded warrants on any national securities exchange or other nationally recognized trading system. Without an active market, the liquidity of the warrants and pre-funded warrants will be limited.

The warrants and pre-funded warrants are speculative in nature.

The warrants and pre-funded warrants offered hereby do not confer any rights of share of common stock ownership on their holders, such as voting rights or the right to receive dividends, but rather merely represent the right to acquire shares of common stock at a fixed price. Specifically, commencing on the date of issuance, holders of the warrants may acquire the shares of common stock issuable upon exercise of such warrants at an exercise price of $                per share of common stock, and holders of the pre-funded warrants may acquire the shares of common stock issuable upon exercise of such warrants at an exercise price of $0.0001 per share of common stock. Moreover, following this offering, the market value of the warrants and pre-funded warrants is uncertain and there can be no assurance that the market value of the warrants or pre-funded warrants will equal or exceed their respective public offering prices. There can be no assurance that the market price of the shares of common stock will ever equal or exceed the exercise price of the warrants or pre-funded warrants, and consequently, whether it will ever be profitable for holders of warrants to exercise the warrants or for holders of the pre-funded warrants to exercise the pre-funded warrants.

Holders of the warrants offered hereby will have no rights as common stockholders with respect to the shares our common stock underlying the warrants until such holders exercise their warrants and acquire our common stock, except as otherwise provided in the warrants.

Until holders of the warrants and the pre-funded warrants acquire shares of our common stock upon exercise thereof, such holders will have no rights with respect to the shares of our common stock underlying such warrants, except to the extent that holders of such warrants will have certain rights to participate in distributions or dividends paid on our common stock as set forth in the warrants. Upon exercise of the warrants and the pre-funded warrants, the holders will be entitled to exercise the rights of a common stockholder only as to matters for which the record date occurs after the exercise date.

This is a best efforts offering, no minimum amount of securities is required to be sold, and we may not raise the amount of capital we believe we can successfully develop emricasanis required for our business plans.

The Placement Agent has agreed to use its reasonable best efforts to solicit offers to purchase the securities in this offering. The Placement Agent has no obligation to buy any of the securities from

us or to arrange for the treatmentpurchase or sale of acute-on-chronic and chronic liver diseases, including ACLF, CLF and HCV-POLT.

Our Strategy

Our strategyany specific number or dollar amount of the securities. There is to develop and commercialize medicines to treat liver disease and associated fibrotic indications in areasno required minimum number of high unmet medical need. The key elementssecurities or amount of our strategy are to:

develop emricasanproceeds that must be sold as a treatment for liver diseasescondition to completion of this offering. Because there is no minimum number of securities or amount of proceeds required as a condition to the closing of this offering, the actual offering amount, Placement Agent fees and proceeds to us are not presently determinable and may be substantially less than the maximum amounts set forth above. We may sell fewer than all of the securities offered hereby, which may significantly reduce the amount of proceeds received by us, and investors in orphan patient populations;

pursue accelerated pathways for regulatory approvalthis offering will not receive a refund in the United Statesevent that we do not sell an amount of securities sufficient to fund for our general corporate purposes, including working capital, our atherectomy indication trial, and EU;

buildengineering efforts. Thus, we may not raise the amount of capital we believe is required for our own salesoperations in the short-term and marketing capabilitiesmay need to commercialize emricasan for indications that target orphan patient populations in North America and Europe; and

evaluate strategic partnershipsraise additional funds, which may not be available or available on terms acceptable to maximize the commercial potential of emricasan.us.

Risks Related to Our Business

OurWe are a clinical-stage company, have a very limited operating history, are not currently profitable, do not expect to become profitable in the near future and may never become profitable.

We are a clinical-stage biopharmaceutical company. In May 2020, we completed the business combination between Conatus Pharmaceuticals Inc., a Delaware corporation (“Conatus”) and Histogen, Inc., a Delaware corporation (“Histogen Subsidiary”), in accordance with the Agreement and Plan of Merger and Reorganization, dated as of January 28, 2020, pursuant to which a subsidiary of Conatus merged with and into the Histogen Subsidiary, with the Histogen Subsidiary continuing as a wholly-owned subsidiary of Conatus and the surviving corporation of the merger (the “Merger”). On May 26, 2020, the Merger was completed, and we changed our name from Conatus Pharmaceuticals Inc. to Histogen Inc., and Histogen, Inc. changed its name to Histogen Therapeutics Inc. Following the Merger, we are focused primarily on the development of patented, innovative technologies that replace and regenerate tissues in the body for aesthetic and therapeutic markets.

We have two product candidates currently in development, HST-001 and HST-003. In December 2020, we announced that while patients treated with HST-001 demonstrated separation from placebo patients for absolute change from baseline in total hairs (terminal and vellus) in the target area (TAHC) in the vertex as measured by Canfield’s Hairmetrix macrophotography system, preliminary week 18 results showed that HST-001 did not achieve statistical significance at the week 18 primary endpoint assessment. In addition to HST-001 and HST-003, we have an asset previously developed by Conatus that we retained development and commercialization rights to, emricasan, which we are jointly developing with our partner, Amerimmune and we have two pre-clinical programs, HST-004 and HST-002. None of these product candidates have been approved for marketing or are being marketed or commercialized. In addition, we have developed a non-prescription topical skin care ingredient utilizing human multipotent cell conditioned media (CCM) that harnesses the power of growth factors and other cell signaling molecules to support our epidermal stem cells, which is utilized by Allergan Sales LLC (“Allergan”) in formulating certain of their skin care product lines in spa and professional offices.

As a result, while the CCM ingredient for skin care currently generates some product revenue, we have limited historical operations upon which to evaluate our business and prospects and have not yet demonstrated an ability to implementobtain marketing approval for any of our business strategy is subject to numerousproduct candidates or successfully overcome the risks as more fully describedand uncertainties frequently encountered by companies in the section entitled “Risk Factors” immediately following this prospectus summary. These risks include, among others:biopharmaceutical industry. We also have generated limited revenues from licensing agreements or product sales to date, and continue to incur significant research and development and other expenses. As a result, we have not been profitable and have incurred significant operating losses in every reporting period since our inception, except for the year ended December 31, 2017. For the nine

Our business is dependent onmonths ended September 30, 2020 and for the successyears ended December 31, 2019 and 2018, we reported net losses of a single drug candidate, emricasan,$15.3 million, $3.0 million and $6.2 million, respectively, and had an accumulated deficit of $59.2 million as of September 30, 2020.

For the foreseeable future, we expect to continue to incur losses, which will require significant additional clinical testing beforeincrease significantly from historical levels as we canexpand our drug development activities, seek regulatory approvalapprovals for our product candidates and potentially launch commercial sales.

Emricasan was the subject of a clinical hold imposedbegin to commercialize them if they are approved by the U.S. Food and Drug Administration (the “FDA”), the European Medicines Agency (the “EMA”) or FDA, while under development by Pfizer due to a preclinical observation. Although the clinical hold has been lifted, any adverse side effects or other safety risks associated with emricasan could delay or preclude approval of the drug candidate, cause us to suspend or discontinue our clinical trials or limit the commercial profile of emricasan.

Clinical drug development involves uncertain outcomes, and results of earlier studies and trials may not be predictive of future trial results.

The FDA regulatory approval process is lengthy and time-consuming, andcomparable foreign authorities. Even if we experience significant delayssucceed in the clinical developmentdeveloping and regulatory approval of emricasan,commercializing one or we are unable to obtain regulatory approval of emricasan, our business will be substantially harmed.

We rely on third parties to conduct our clinical trials and to manufacture and supply emricasan. If these third parties do not successfully carry out their contractual duties or meet expected deadlines, we may not be able to obtain regulatory approval for or commercialize emricasan and our business could be substantially harmed.

We have a limited operating history, have incurred significant operating losses since our inception, including an accumulated deficit of $61.1 million as of March 31, 2013, and anticipate that we will continue to incur losses for the foreseeable future.

We have not generated any revenues to date frommore product sales, andcandidates, we may never achieve or sustain profitability.

If we fail to obtain additional financing, we may be unable to complete the development and commercialization of emricasan.

If our efforts to protect the proprietary nature of the intellectual property related to our technologies are not adequate, we may not be able to compete effectively in our market.

Corporate Information

We were incorporated under the laws of the state of Delaware in 2005. Our principal executive offices are located at 4365 Executive Dr., Suite 200, San Diego, California 92121, and our telephone number is (858) 558-8130. Our website address is www.conatuspharma.com. The information contained in, or accessible through, our website does not constitute part of this prospectus.

Implications of Being an Emerging Growth Company

As a company with less than $1.0 billion in revenue during our last fiscal year, we qualify as an “emerging growth company” as defined in the Jumpstart Our Business Startups Act, or JOBS Act, enacted in April 2012. An “emerging growth company” may take advantage of reduced reporting requirements that are otherwise applicable to public companies. These provisions include, but are not limited to:

being permitted to present only two years of audited financial statements and only two years of related Management’s Discussion and Analysis of Financial Condition and Results of Operations in this prospectus;

not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, as amended, or the Sarbanes-Oxley Act;

reduced disclosure obligations regarding executive compensation in our periodic reports, proxy statements and registration statements; and

exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved.

We may take advantage of these provisions until the last day of our fiscal year following the fifth anniversary of the date of the first sale of our common equity securities pursuant to an effective registration statement under the Securities Act of 1933, as amended, or the Securities Act, which such fifth anniversary will occur in 2018. However, if certain events occur prior to the end of such five-year period, including if we become a “large accelerated filer,” our annual gross revenues exceed $1.0 billion or we issue more than $1.0 billion of non-convertible debt in any three-year period, we will cease to be an emerging growth company prior to the end of such five-year period.

We have elected to take advantage of certain of the reduced disclosure obligations in this prospectus and may elect to take advantage of other reduced reporting requirements in future filings. As a result, the information that we provide to our stockholders may be different than you might receive from other public reporting companies in which you hold equity interests.

THE OFFERING

Common stock offered by us

                    shares (or                     shares if the underwriters exercise their option to purchase additional shares in full)

Common stock to be outstanding after this offering

                    shares (or                     shares if the underwriters exercise their option to purchase additional shares in full)

Use of proceeds

We intend to use the net proceeds of this offering to fund the clinical development of emricasan and to fund working capital and for general corporate purposes. See “Use of Proceeds” on page 38 for a description of the intended use of proceeds from this offering.

Offering price

$                    per share

Risk factors

See “Risk Factors” beginning on page 9 and other information included in this prospectus for a discussion of factors that you should consider carefully before deciding to invest in our common stock.

Proposed NASDAQ Global Market symbol

CNAT

The number of shares of our common stock to be outstanding after this offering set forth above includes:

75,923,831 shares of common stock outstanding as of March 31, 2013, after giving effect to the conversion of 15,576,789 shares of our convertible preferred stock into 1,557,678 shares of common stock in May 2013 and the automatic conversion of all remaining outstanding shares of our convertible preferred stock into 63,334,653 shares of common stock immediately prior to the closing of this offering;

the issuance of                    shares of common stock as a result of the expected net exercise of outstanding warrants, or the 2010 Warrants, in connection with the completion of this offering, assuming an initial public offering price of $                    per share (the midpoint of the price range listed on the cover page of this prospectus), which 2010 Warrants will terminate if unexercised prior to the completion of this offering; and

the issuance of                      shares of our common stock in connection with the completion of this offering as a result of the automatic conversion of the $1.0 million in aggregate principal amount of convertible promissory notes we issued in May 2013, or the 2013 Notes (including accrued interest thereon), assuming an initial public offering price of $                     per share (the midpoint of the price range listed on the cover page of this prospectus) and assuming the conversion occurs on                     , 2013 (the expected closing date of this offering).

The number of shares of our common stock to be outstanding after this offering set forth above excludes:

4,899,000 shares of common stock issuable upon exercise of stock options outstanding as of March 31, 2013, at a weighted average exercise price of $0.12 per share;

                    shares of our common stock reserved for future issuance under our 2013 equity incentive plan, or the 2013 plan, which will become effective immediately prior to the closing of this offering (including 69,500 shares of common stock reserved for future grant or issuance under our 2006 equity incentive plan, which shares will be added to the shares reserved under the 2013 plan upon its effectiveness);

                    shares of common stock reserved for future issuance under our 2013 employee stock purchase plan, or ESPP, which will become effective upon the closing of this offering; and

                     shares of common stock issuable upon exercise of warrants we issued in May 2013, at an exercise price of $                     per share.

Unless otherwise indicated, this prospectus reflects and assumes the following:

the filing of our amended and restated certificate of incorporation and the adoption of our amended and restated bylaws, which will occur immediately prior to the closing of this offering;

the conversion of 15,576,789 shares of our convertible preferred stock into 1,557,678 shares of common stock in May 2013 and the automatic conversion of all remaining outstanding shares of our convertible preferred stock into 63,334,653 shares of our common stock immediately prior to the closing of the offering and the resultant reclassification of our convertible preferred stock warrant liability to stockholders’ equity (deficit) in connection with such conversion;

the adjustment of outstanding warrants to purchase shares of our Series B convertible preferred stock into warrants to purchase                      shares of common stock in connection with the completion of this offering;

a one-for-        reverse stock split of our common stock to be effected before the completion of this offering;

no exercise of the outstanding options described above; and

no exercise by the underwriters of their option to purchase additional shares of our common stock.

Entities affiliated with Aberdare Ventures, Advent Private Equity, Coöperative Gilde Healthcare II U.A., MPM Capital, Roche Finance Ltd, AgeChem Venture Fund L.P., Hale BioPharma Ventures LLC and our chief executive officer, each of which is a current stockholder, have indicated an interest in purchasing an aggregate of approximately $10.0 million of shares of our common stock in this offering. However, because indications of interest are not binding agreements or commitments to purchase, the underwriters may determine to sell more, less or no shares in this offering to any of these entities, or any of these entities may determine to purchase more, less or no shares in this offering.

SUMMARY CONSOLIDATED FINANCIAL DATA

The following tables set forth a summary of our consolidated historical financial data as of, and for the periods ended on, the dates indicated. We have derived the consolidated statements of operations data for the years ended December 31, 2011 and 2012 and the consolidated balance sheet data as of December 31, 2011 and 2012 from our audited consolidated financial statements included elsewhere in this prospectus. The consolidated statements of operations data for the three months ended March 31, 2013 and 2012 and for the period from July 13, 2005 (inception) to March 31, 2013 and the balance sheet data as of March 31, 2013 have been derived from our unaudited consolidated financial statements included elsewhere in this prospectus and have been prepared on the same basis as the audited consolidated financial statements. In the opinion of the management, the unaudited data reflects all adjustments, consisting of normal and recurring adjustments, necessary for a fair presentation of results as of and for these periods. You should read this data together with our audited consolidated financial statements and related notes included elsewhere in this prospectus and the sections in this prospectus entitled “Selected Consolidated Financial Data” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” Our historical results for any prior period are not necessarily indicative of our future results.

  Year Ended December 31,  Three Months Ended March 31,  Period from July 13,
2005 (Inception) to
March 31, 2013
 
  2011  2012           2012                2013      
        (unaudited)    

Consolidated Statement of Operations Data:

     

Operating expenses

     

Research and development

 $9,486,619   $5,528,106   $1,161,630   $967,778   $41,792,926  

General and administrative

  2,874,507    3,086,479    750,160    748,796    18,865,388  
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Total operating expenses

  12,361,126    8,614,585    1,911,790    1,716,574    60,658,314  

Other income (expense)

     

Interest income

  28,274    25,547    8,330    132    1,358,882  

Interest expense

  (113,836  (70,000  (17,500  (17,500  (792,329

Other income (expense)

  (4,439  1,358    9,254    (15,677  225,722  

Other financing income (expense)

  454,547    (91,559  9,100    (547,164  (1,238,253
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Total other income (expense)

  364,546    (134,654  9,184    (580,209  (445,978
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Net loss

 $(11,996,580 $(8,749,239 $(1,902,606 $(2,296,783 $(61,104,292
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Net loss per share attributable to common stockholders, basic and diluted(1)

 $(1.44 $(1.04 $(0.23 $(0.26 
 

 

 

  

 

 

  

 

 

  

 

 

  

Weighted average shares outstanding used in computing net loss per share attributable to common stockholders, basic and diluted(1)

  8,346,134    8,389,885    8,350,000    8,749,450   
 

 

 

  

 

 

  

 

 

  

 

 

  

Pro forma net loss per share attributable to common stockholders, basic and diluted (unaudited)(1)

     
  

 

 

   

 

 

  

Weighted average shares outstanding used in computing pro forma net loss per share attributable to common stockholders, basic and diluted (unaudited)(1)

     
  

 

 

   

 

 

  

(1)

See Note 2 to our audited consolidated financial statements included elsewhere in this prospectus for an explanation of the method used to calculate the historical and pro forma net loss per share, basic and diluted, and the number of shares used in the computation of the per share amounts.

   As of March 31, 2013
   Actual   Pro
Forma(1)
  Pro Forma  As
Adjusted(1)(2)
       (unaudited)   

Consolidated Balance Sheet Data:

      

Cash, cash equivalents and short-term investments

  $5,095,486      

Working capital(2)

   4,438,000      

Total assets

   5,246,020      

Convertible preferred stock warrant liability

   707,509      

Note payable

   1,000,000      

Convertible preferred stock

   63,908,372      

Total stockholders’ deficit

   (61,110,679    

(1)

Gives effect to:

the issuance of $1.0 million in aggregate principal amount of 2013 Notes in May 2013 and the automatic conversion of the 2013 Notes (including accrued interest thereon), assuming an initial public offering price of $             per share (the midpoint of the price range listed on the cover page of this prospectus) and assuming the conversion occurs on                     , 2013 (the expected closing date of this offering);

the conversion of 15,576,789 shares of our convertible preferred stock into 1,557,678 shares of common stock in May 2013 and the automatic conversion of all of our remaining outstanding shares of convertible preferred stock as of March 31, 2013 into an aggregate of 63,334,653 shares of common stock and the resultant reclassification of our convertible preferred stock warrant liability to stockholders’ equity (deficit) in connection with such conversion; and

the issuance of                    shares of common stock as a result of the expected net exercise of the 2010 Warrants in connection with the completion of this offering, assuming an initial public offering price of $            per share, the midpoint of the price range listed on the cover page of this prospectus, which 2010 Warrants will terminate if unexercised prior to the completion of this offering.

(2)

Gives further effect to the issuance and sale of                    shares of common stock in this offering at the assumed initial public offering price of $            per share, the midpoint of the price range listed on the cover page of this prospectus, after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us. Each $1.00 increase (decrease) in the assumed initial public offering price of $            per share would increase (decrease) the pro forma as adjusted amount of each of cash, cash equivalents and short-term investments, working capital, total assets and total stockholders’ equity (deficit) by approximately $            , assuming that the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us. Similarly, each increase (decrease) of 1.0 million shares in the number of shares offered by us at the assumed initial public offering price would increase (decrease) each of cash, cash equivalents and short-term investments, working capital, total assets and total stockholders’ equity (deficit) by approximately $            . The pro forma information discussed above is illustrative only and will be adjusted based on the actual initial public offering price and other terms of our initial public offering determined at pricing.

RISK FACTORS

Investing in our common stock involves a high degree of risk. You should carefully consider the risks described below, as well as the other information in this prospectus, including our financial statements and the related notes and “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” before deciding whether to invest in our common stock. The occurrence of any of the events or developments described below could harm our business, financial condition, results of operations and growth prospects. In such an event, the market price of our common stock could decline and you may lose all or part of your investment. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may impair our business operations.

Risks Related to Our Business and Industryprofitable.

Our business isWe are dependent on the success of a single drug candidate, emricasan, which will require significant additional clinical testing before we can seek regulatory approval and potentially launch commercial sales.

Our future success depends on our ability to obtain regulatory approval for, and then successfully commercialize our only drug candidate, emricasan. We have not completed the development of any drug candidates, we currently generate no revenues from sales of any drugs, and we may never be able to develop a marketable drug. Emricasan will require additional clinical and non-clinical development, regulatory review and approval in multiple jurisdictions, substantial investment, access to sufficient commercial manufacturing capacity and significant marketing efforts before we can generate any revenues from product sales. We are not permitted to marketone or promote emricasan before we receive regulatory approval from the U.S. Food and Drug Administration, or FDA, or comparable foreign regulatory authorities, and we may never receive such regulatory approvals. Our clinical development plan for emricasan includes a Phase 2b clinical trial in patients with acute-on-chronic liver failure, or ACLF, a Phase 2b clinical trial in patients with chronic liver failure, or CLF, and a Phase 3 clinical trial in patients who have developed liver fibrosis post-orthotopic liver transplant due to Hepatitis C virus infection, or HCV-POLT. While the HCV-POLT study is designated a Phase 3 registration study in the European Union, or the EU, and based on our discussions with regulatory authorities in the United Kingdom and Germany, we believe it will support the filing of a marketing authorization application, or MAA, in the EU upon completion, it is designated a Phase 2b study in the United States and we therefore sometimes refer to this trial as the Phase 2b/3 HCV-POLT trial. We plan to seek further discussions with the FDA to determine if the HCV-POLT trial may be used to support the filing of a new drug application, or NDA, in the United States. We cannot guarantee that regulatory authorities in the EU will agree that our Phase 3 HCV-POLT study will qualify as a single registration study in support of an MAA or that the FDA will recognize the results from the HCV-POLT trial in support of an NDA filing in the United States. We expect to initiate the Phase 2b ACLF trial and the Phase 2b/3 HCV-POLT trial in the second half of 2013 and the Phase 2b CLF trial in the second half of 2014. There is no guarantee that these trials will commence or be completed on time or at all, and the FDA or comparable foreign regulatory authorities may disagree with the design or implementationmore of our clinical trials. Even if such regulatory authorities agree with the design and implementation of our clinical trials, we cannot guarantee you that such regulatory authorities will not change their requirements in the future. In addition, even if the trials are successfully completed, we cannot guarantee that the FDA or foreign regulatory authorities will interpret the results as we do, and more trials could be required before we submit emricasan for approval. To the extent that the results of the trials are not satisfactory to the FDA or foreign regulatory authorities for support of a marketing application, approval of emricasan may be significantly delayed, or we may be required to expend significant additional resources, which may not be available to us, to conduct additional trials in support of potential approval of emricasan.

We cannot anticipate when or if we will seek regulatory review of emricasan for any indication. We have not previously submitted an NDA to the FDA, or similar drug approval filings to comparable foreign authorities. An NDA must include extensive preclinical and clinical data and supporting information to establish thecurrent product candidate’s safety and effectiveness for each desired indication. The NDA must also include significant information regarding the chemistry, manufacturing and controls for the product. Obtaining approval of an NDA is a lengthy, expensive and uncertain process, and may not be obtained. We have not received marketing

approval for any drug candidate,candidates and we cannot be certain that emricasanany of them will receive regulatory approval or be commercialized.

We have spent significant time, money and effort on the development of our core assets, HST-001 and HST-003, and our pre-clinical assets, HST-004 and HST-002. In addition, Conatus previously spent significant time, money and effort on the licensing and development of emricasan. To date, no pivotal clinical trials designed to provide clinically and statistically significant proof of efficacy, or to provide sufficient evidence of safety to justify approval, have been completed with any of our product candidates. All of our product candidates will require additional development, including clinical trials as well as further preclinical studies to evaluate their toxicology, carcinogenicity and pharmacokinetics and optimize their formulation, and regulatory clearances before they can be commercialized. Positive results obtained during early development do not necessarily mean later development will succeed or that regulatory clearances will be successfulobtained. Our drug development efforts may not lead to commercial drugs, either because our product candidates fail to be safe and effective or because we have inadequate financial or other resources to advance our product candidates through the clinical development and approval processes. If any of our product candidates fail to demonstrate safety or efficacy at any time or during any phase of development, we would experience potentially significant delays in, clinical trials or be required to abandon, development of the product candidate.

We do not anticipate that any of our current product candidates will be eligible to receive regulatory approval from the FDA, the EMA or comparable foreign authorities and begin commercialization for a number of years, if ever. Even if we ultimately receive regulatory approval for any indication. Ifof these product candidates, we do not receive regulatory approvalsor our current or potential future partners, if any, may be unable to commercialize them successfully for and successfully commercialize emricasana variety of reasons. These include, for example, the availability of alternative treatments, lack of cost-effectiveness, the cost of manufacturing the product on a timely basis or at all, wecommercial scale and competition with other drugs. The success of our product candidates may notalso be able to continue our operations. Even if we successfully obtain regulatory approvals to market emricasan, our revenues will be dependent, in part, on our ability to commercialize emricasan as well as the size of the markets in the territories for which we gain regulatory approval and have commercial rights. If the markets for the treatment of ACLF, CLF or HCV-POLT are not as significant as we estimate, our business and prospects will be harmed.

Emricasan was the subject of a clinical hold imposedlimited by the FDA while under development by Pfizer Inc. due to a preclinical observation. Although the clinical hold has been lifted,prevalence and severity of any adverse side effectseffects. If we fail to commercialize one or other safety risks associated with emricasan could delay or preclude approval of the drug candidate, cause us to suspend or discontinue our clinical trials or limit the commercial profile of emricasan.

When we acquired emricasan from Pfizer in 2010, emricasan was on clinical hold in the United States due to an observation of inflammatory infiltrates in mice that Pfizer saw in a preclinical study and reported to the FDA in 2007. Pfizer performed additional preclinical studies attempting to characterize the nature of the inflammatory infiltrates, but did not carry out a formal carcinogenicity study to evaluate whether or not the infiltrates progressed to cancer. These infiltrates observed in mice were not observed in any other species. In 2008, Pfizer stopped work on the program. After acquiring emricasan, we conducted a thorough internal review of these studies, commissioned several independent experts to review the data and, based on guidance from the FDA, conducted a 6-month carcinogenicity study in the Tg.rasH2 transgenic mouse model, which is known to be predisposed toward tumor development. This study was completed in 2012. There was no evidence of drug-related tumorgenicity in our carcinogenicity study, and after further discussions with the FDA, we were cleared in January 2013 to proceed with our planned HCV-POLT trial, formally lifting emricasan from clinical hold in the United States. Emricasan was never placed on clinical hold outside the United States. We cannot assure you that emricasan will not be placed on clinical hold in the future for similar or unrelated reasons.

In addition, undesirable side effects caused by emricasan could result in the delay, suspension or terminationmore of our clinical trials by us, the FDA or other regulatory authorities or institutional review boards, or IRBs, for a number of reasons. To date, over 500 subjects have received emricasan in Phase 1 and Phase 2 clinical trials. The most commonly reported treatment-related adverse events in emricasan-treated subjects were upper abdominal pain, dizziness, headache, fatigue, nausea and diarrhea. Although most of the adverse events reported in relation to emricasan in these trials were mild to moderate, results of our anticipated future trials could reveal a high and unacceptable severity and prevalence of these or other side effects, including, potentially, more severe side effects. In such an event, our trials couldcurrent product candidates, we may be suspended or terminated and the FDA or comparable foreign regulatory authorities could order us to cease further development of or deny approval of emricasan for any or all targeted indications. In addition, the drug-related side effects could affect patient recruitment or the ability of enrolled patients to complete the trial or result in potential product liability claims. Even if regulatory authorities granted approval of emricasan, if adverse events caused regulatory authorities to impose a restrictive label or if physicians’ perceptions of emricasan’s safety caused them to limit their use of the drug, our abilityunable to generate sufficient sales of emricasan could be limited. Any of these occurrences may harmrevenues to attain or maintain profitability, and our business, prospects, financial condition and results of operations significantly.stock price may decline.

Clinical drug development involves uncertain outcomes, and results of earlier studies and trials may not be predictive of future trial results.

Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. Failure can occur at any time during the clinical trial process. For example, in late 2011 we ceased clinical development of a product candidate, CTS-1027, for which we had incurred approximately $31.3 million in research and development expenses prior to such time. The results of preclinical studies and early clinical trials of emricasanrelating to our product candidates may not be predictive of the results of later-stage clinical trials. DrugProduct candidates in later stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed through preclinical studies and initial clinical trials. A number of companies in the biopharmaceutical industry have suffered significant setbacks in advanced clinical trials due to lack of efficacy or safety profiles, notwithstanding promising results in earlier trials.

Emricasan has been the subject of six Phase 1 and four Phase 2 clinical trials. Although we believe emricasan has demonstrated evidence of a beneficial effect in patients with chronic liver disease independent of the cause of disease, we are now seeking to evaluate emricasan in targeted indications within liver disease, including certain indications for which the safety and efficacy of emricasan have not been previously evaluated. Specifically, we expect to initiate a Phase 2b ACLF trial and a Phase 2b/3 HCV-POLT trial in the second half of 2013 and a Phase 2b CLF trial in the second half of 2014. The development program for emricasan to date has focused primarily on the treatment of HCV patients and the evaluation of the drug candidate in liver disease generally. We cannot be certain that any of our plannedcurrent or future clinical trials will be successful, and failure

successful. Failure in one indication may have negative consequences for the development of emricasanour product candidates for other indications. For example, any safety concerns observed in our ACLF trials could limit the prospects for regulatory approval for another indication such as HCV-POLT or CLF. Any such failure may harm our business, prospects and financial condition.

For instance, we recently announced that we entered into a Collaborative Development and Commercialization Agreement with Amerimmune under which Amerimmune and Histogen intend to collaborate to undertake a clinical development program using emricasan to determine if emricasan is safe and efficacious in treating COVID-19. Emricasan will require additional clinical and non-clinical development, regulatory review and approval in multiple jurisdictions, substantial investment, access to sufficient commercial manufacturing capacity and significant marketing efforts before we or Amerimmune can generate any revenues from product sales.

If further clinical development of emricasan is resumed, there is no guarantee that future clinical trials will be completed on time or at all or that any future clinical trials will commence on time or at all, and the FDA or comparable foreign regulatory authorities may disagree with the design or implementation of its clinical trials. Even if such regulatory authorities agree with the design and implementation of clinical trials conducted by us or our partner, we cannot guarantee you that such regulatory authorities will not change their requirements in the future. In addition, even if future clinical trials are successfully completed, we cannot guarantee that the FDA or foreign regulatory authorities will interpret the results as we do, and more trials would likely be required before we or our partner submit emricasan for approval. To the extent that the results of the clinical trials are not satisfactory to the FDA or foreign regulatory authorities for support of a marketing application, approval of emricasan may be significantly delayed, or we or our partner may be required to expend significant additional resources, which may not be available to us or our partner, to conduct additional trials in support of potential approval of emricasan.

The FDAIf development of our product candidates does not produce favorable results, we and our licensees, may be unable to commercialize these products.

To receive regulatory approval for the commercialization of our core assets, HST-001 and HST-003, our emricasan asset being developed in collaboration with Amerimmune, and our pre-clinical assets, HST-004 and HST-002, or any other product candidates that we may develop, adequate and well-controlled clinical trials must be conducted to demonstrate safety and efficacy in humans to the satisfaction of the FDA, the EMA and comparable foreign authorities. In order to support marketing approval, these agencies typically require successful results in one or more Phase 3 clinical trials, which our current product candidates have not yet reached and may never reach. The development process is lengthyexpensive, can take many years and has an uncertain outcome. Failure can occur at any stage of the process. We may experience numerous unforeseen events during, or as a result of, the development process that could delay or prevent commercialization of our current or future product candidates, including the following:

clinical trials may produce negative or inconclusive results;

preclinical studies conducted with product candidates during clinical development to, among other things, evaluate their toxicology, carcinogenicity and pharmacokinetics and optimize their formulation may produce unfavorable results;

patient recruitment and enrollment in clinical trials may be slower than we anticipate;

costs of development may be greater than we anticipate;

our product candidates may cause undesirable side effects that delay or preclude regulatory approval or limit their commercial use or market acceptance, if approved;

licensees who may be responsible for the development of our product candidates may not devote sufficient resources to these clinical trials or other preclinical studies of these candidates or conduct them in a timely manner; or

we may face delays in obtaining regulatory approvals to commence one or more clinical trials.

Success in early development does not mean that later development will be successful because, for example, product candidates in later-stage clinical trials may fail to demonstrate sufficient safety and efficacy despite having progressed through initial clinical trials.

In the future, we or our licensees will be responsible for establishing the targeted endpoints and goals for development of our product candidates. These targeted endpoints and goals may be inadequate to demonstrate the safety and efficacy levels required for regulatory approvals. Even if we believe data collected during the development of our product candidates are promising, such data may not be sufficient to support marketing approval by the FDA, the EMA or comparable foreign authorities. Further, data generated during development can be interpreted in different ways, and the FDA, the EMA or comparable foreign authorities may interpret such data in different ways than us or our licensees. Our failure to adequately demonstrate the safety and efficacy of our product candidates would prevent our receipt of regulatory approval, and ultimately the potential commercialization of these product candidates.

Since we do not currently possess the resources necessary to independently develop and commercialize our product candidates or any other product candidates that we may develop, we may seek to enter into license agreements to assist in the development and potential future commercialization of some or all of these assets as a component of our strategic plan. However, our discussions with potential licensees may not lead to the establishment of a license agreement on acceptable terms, if at all, or it may take longer than expected to establish new licensing agreements, leading to development and potential commercialization delays, which would adversely affect our business, financial condition and results of operations.

We expect to continue to incur significant research and development expenses, which may make it difficult for us to attain profitability.

We expect to expend substantial funds in research and development, including preclinical studies and clinical trials of our product candidates, and to manufacture and market any product candidates in the event they are approved for commercial sale. We also may need additional funding to develop or acquire complementary companies, technologies and assets, as well as for working capital requirements and other operating and general corporate purposes. Moreover, our planned increases in staffing will dramatically increase our costs in the near and long-term.

However, our spending on current and future research and development programs and product candidates for specific indications may not yield any commercially viable products. Due to our limited financial and managerial resources, we must focus on a limited number of research programs and product candidates and on specific indications. Our resource allocation decisions may cause us to fail to capitalize on viable commercial products or profitable market opportunities.

Because the successful development of our product candidates is uncertain, we are unable to precisely estimate the actual funds we will require to develop and potentially commercialize them. In addition, we may not be able to generate sufficient revenue, even if we are able to commercialize any of our product candidates, to become profitable.

Our financial statements include an explanatory paragraph that expresses substantial doubt on our ability to continue as a going concern, and we must raise additional funds to finance our operations to remain a going concern.

Based on our cash balances, recurring losses since inception, except for year ended December 31, 2017, and inadequacy of existing capital resources to fund planned operations for a twelve-month period, our independent registered public accounting firm has included an explanatory paragraph in its report on our financial statements as of and for the years ended December 31, 2019 and 2018 expressing substantial doubt about our ability to continue as a going concern. We will, during 2020 and into the future, require significant additional funding to continue operations. If we are unable to raise additional funds when needed, we will not be able to continue development of our product candidates, or we will be required to delay, scale back or eliminate some or all of our development programs or cease operations. We have a purchase agreement in place with Lincoln Park to sell up to $10.0 million worth of shares of our common stock, from time to time, to Lincoln Park, and as of September 30, 2020, have sold approximately $1.5 million worth of shares of our common stock to Lincoln Park. In November 2020, we sold 2,522,784 shares of our common stock and issued warrants to purchase 1,892,088 shares of our common stock in a registered direct offering. Any sales under the Lincoln Park arrangement, and any additional equity or debt financing that we are able to obtain may be dilutive to our current stockholders and debt financing, if available, may involve restrictive covenants or unfavorable terms. If we raise funds through licensing arrangements, we may be required to relinquish, on terms that are not favorable to us, rights to some of our technologies or product candidates that we would otherwise seek to develop or commercialize. Moreover, if we are unable to continue as a going concern, we may be forced to liquidate our assets and the values we receive for our assets in liquidation or dissolution could be significantly lower than the values reflected in our financial statements.

Given our lack of current cash flow, we will need to raise additional capital; however, it may be unavailable to us or, even if capital is obtained, may cause dilution or place significant restrictions on our ability to operate our business.

Since we will be unable to generate sufficient, if any, cash flow to fund our operations for the foreseeable future, we will need to seek additional equity or debt financing to provide the capital required to maintain or expand our operations.

There can be no assurance that we will be able to raise sufficient additional capital on acceptable terms or at all. If such additional financing is not available on satisfactory terms, or is not available in sufficient amounts, we may be required to delay, limit or eliminate the development of business opportunities and our ability to achieve our business objectives, our competitiveness, and our business, financial condition and results of operations may be materially adversely affected. In addition, we may be required to grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves. Our inability to fund our business could lead to the loss of your investment.

Our future capital requirements will depend on many factors, including, but not limited to:

the scope, rate of progress, results and cost of our clinical trials, preclinical studies and other related activities;

our ability to establish and maintain strategic licensing or other arrangements and the financial terms of such arrangements;

the timing of, and the costs involved in, obtaining regulatory approvals for any of our current or future product candidates;

the number and characteristics of the product candidates we seek to develop or commercialize;

the cost of manufacturing clinical supplies, and establishing commercial supplies, of our product candidates;

the cost of commercialization activities if any of our current or future product candidates are approved for sale, including marketing, sales and distribution costs;

the expenses needed to attract and retain skilled personnel;

the costs associated with being a public company;

the amount of revenue, if any, received from commercial sales of our product candidates, should any of our product candidates receive marketing approval;

the costs involved in preparing, filing, prosecuting, maintaining, defending and enforcing possible patent claims, including litigation costs and the outcome of any such litigation; and

the impact of any natural disasters or public health crises, such as the COVID-19 pandemic.

If we raise additional capital by issuing common stock under the Lincoln Park arrangement, or any other equity securities or securities convertible into equity, the percentage ownership of our existing stockholders may be reduced, and accordingly these stockholders may experience substantial dilution. We may also issue equity securities that provide for rights, preferences and privileges senior to those of our common stock. Given our need for cash and that equity issuances are the most common type of fundraising for similarly situated companies, the risk of dilution is particularly significant for our stockholders.

Further, SEC regulations limit the amount of funds we can raise during any 12-month period pursuant to our shelf registration statement on Form S-3. We are currently subject to General Instruction I.B.6 to Form S-3, or the Baby Shelf Rule, and the amount of funds we can raise through primary public offerings of securities in any 12-month period using our registration statement on Form S-3 is limited to one-third of the aggregate market value of the voting and non-voting common equity held by non-affiliates. We are currently limited by the Baby Shelf Rule as of the filing of this Quarterly Report on Form 10-Q, until such time as our public float exceeds $75 million. If we are required to file a new registration statement on another form, we may incur additional costs and be subject to delays due to review by SEC staff.

Our product candidates may cause undesirable side effects that could delay or prevent their regulatory approval or commercialization or have other significant adverse implications on our business, financial condition and results of operations.

Undesirable side effects observed in clinical trials or in supportive preclinical studies with our product candidates could interrupt, delay or halt their development and could result in the denial of regulatory approval by the FDA, the EMA or comparable foreign authorities for any or all targeted indications or adversely affect the marketability of any such product candidates that receive regulatory approval. In turn, this could eliminate or limit our ability to commercialize our product candidates.

Our product candidates may exhibit adverse effects in preclinical toxicology studies and adverse interactions with other drugs. There are also risks associated with additional requirements the FDA, the EMA or comparable foreign authorities may impose for marketing approval with regard to a particular disease.

Our product candidates may require a risk management program that could include patient and healthcare provider education, usage guidelines, appropriate promotional activities, a post-marketing observational study, and ongoing safety and reporting mechanisms, among other

requirements. Prescribing could be limited to physician specialists or physicians trained in the use of the drug, or could be limited to a more restricted patient population. Any risk management program required for approval of our product candidates could potentially have an adverse effect on our business, financial condition and results of operations.

Undesirable side effects involving our product candidates may have other significant adverse implications on our business, financial condition and results of operations. For example:

we may be unable to obtain additional financing on acceptable terms, if at all;

our licensees may terminate any license agreements covering these product candidates;

if any license agreements are terminated, we may determine not to further develop the affected product candidates due to resource constraints and may not be able to establish additional license agreements for their further development on acceptable terms, if at all;

if we were to later continue the development of these product candidates and receive regulatory approval, earlier findings may significantly limit their marketability and thus significantly lower our potential future revenues from their commercialization;

we may be subject to product liability or stockholder litigation; and

we may be unable to attract and retain key employees.

In addition, if any of our product candidates receive marketing approval and we or others later identify undesirable side effects caused by the product:

regulatory authorities may withdraw their approval of the product, or us or our partners may decide to cease marketing and sale of the product voluntarily;

we may be required to change the way the product is administered, conduct additional clinical trials or preclinical studies regarding the product, change the labeling of the product, or change the product’s manufacturing facilities; and

our reputation may suffer.

Any of these events could prevent us from achieving or maintaining market acceptance of the affected product and could substantially increase the costs and expenses of commercializing the product, which in turn could delay or prevent us from generating significant revenues from the sale of the product.

Our efforts to discover product candidates beyond our current product candidates may not succeed, and any product candidates we recommend for clinical development may not actually begin clinical trials.

We intend to expand our existing pipeline of core assets by advancing drug compounds from current ongoing discovery programs into clinical development. However, the process of researching and discovering drug compounds is expensive, time-consuming and if we experience significant delays inunpredictable. Data from our current preclinical programs may not support the clinical development of our lead compounds or other compounds from these programs, and regulatory approvalwe may not identify any additional drug compounds suitable for recommendation for clinical development. Moreover, any drug compounds we recommend for clinical development may not demonstrate, through preclinical studies, indications of emricasan,safety and potential efficacy that would support advancement into clinical trials. Such findings would potentially impede our businessability to maintain or expand our clinical development pipeline. Our ability to identify new drug compounds and advance them into clinical development also depends upon our ability to fund our research and development operations, and we cannot be certain that additional funding will be substantially harmed.available on acceptable terms, or at all.

Delays in the commencement or completion of clinical trials could result in increased costs to us and delay our ability to establish strategic license agreements.

We may experience delaysDelays in commencing and completingthe commencement or completion of clinical trials of emricasan.could significantly impact our drug development costs. We do not know whether planned clinical trials will begin on time need to be redesigned, enroll patients on time or be completed on schedule, if at all. Although we are targeting the initiationThe commencement of a Phase 2b ACLF trial and a Phase 2b/3 HCV-POLT trial in the second half of 2013 and a Phase 2b CLF trial in second half of 2014, these plannedclinical trials maycan be delayed for a variety of reasons, including, but not limited to, delays related to:

 

the availability of financial resources for usobtaining regulatory approval to commence and complete our plannedone or more clinical trials;

reaching agreement on acceptable terms with prospective third-party contract research organizations or CROs,(“CROs”) and clinical trial sites, the terms of which can be subject to extensive negotiation and may vary significantly among different CROs and trial sites;

obtaining IRB approval at each clinical trial site;

recruiting suitable patients to participate in a trial;

having patients complete a trial or return for post-treatment follow-up;

clinical trial sites deviating from trial protocol or dropping out of a trial;

adding new clinical trial sites; or

manufacturing sufficient quantities of a product candidate or other materials necessary to conduct clinical trials;

obtaining institutional review board approval to conduct one or more clinical trials at a prospective site;

recruiting and enrolling patients to participate in one or more clinical trials; and

the failure of our licensees to adequately resource our product candidates due to their focus on other programs or as a result of general market conditions.

In addition, once a clinical trial has begun, it may be suspended or terminated by us, our licensees, the institutional review boards or data safety monitoring boards charged with overseeing our clinical trials, the FDA, the EMA or comparable foreign authorities due to a number of factors, including:

failure to conduct the clinical trial in accordance with regulatory requirements or clinical protocols;

inspection of the clinical trial operations or clinical trial site by the FDA, the EMA or comparable foreign authorities resulting in the imposition of a clinical hold;

unforeseen safety issues; or

lack of adequate funding to continue the clinical trial.

The progress of clinical trials and clinical studies also may be affected by significant global public health matters such as the current novel coronavirus outbreak. Factors related to the novel coronavirus outbreak that may impact the timing and conduct of our clinical trials and clinical studies include:

the diversion of healthcare resources away from the conduct of clinical trial and clinical study matters to focus on pandemic-related concerns, including the attention of physicians serving as clinical trial investigators, hospitals and clinics serving as clinical trial sites, and medical staff supporting the conduct of clinical trials;

limitations on travel and distancing requirements that interrupt key trial or study activities, such as site initiations and monitoring, or that limit the ability of a patient to participate in a clinical trial or study or delay access to drug dosing or assessments;

interruption in global shipping affecting the transport of clinical trial materials, such as investigational drug product; and

employee furlough days that delay necessary interactions with local regulators, ethics committees and other important agencies and contractors.

In addition, if patients or subjects participating in our clinical trials or studies were to contract COVID-19, there could be an adverse impact on the trials or studies. For example, such patients may be unable to participate further or may need to limit participation in a clinical trial or study; the results and data recorded for such patients may differ from those that would have been recorded if the patients had not been affected by COVID-19; or such patients could experience adverse events that could be attributed to the drug product under investigation.

If we experience delays in the completion or termination of any clinical trial of our product candidates, the commercial prospects of our product candidates will be harmed, and our ability to commence product sales and generate product revenues from any of our product candidates will be delayed. In addition, any delays in completing our clinical trials will increase our costs and slow down our product candidate for usedevelopment and approval process. Delays in completing our clinical trials could also allow our competitors to obtain marketing approval before we do or shorten the patent protection period during which we may have the exclusive right to commercialize our product candidates. Any of these occurrences may harm our business, financial condition and prospects significantly. In addition, many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of regulatory approval of our product candidates.

Results of earlier clinical trials may not be predictive of the results of later-stage clinical trials.

The results of preclinical studies and early clinical trials of product candidates may not be predictive of the results of later-stage clinical trials. Product candidates in later stages of clinical trials may fail to show the desired safety and efficacy results despite having progressed through preclinical studies and initial clinical trials. Many companies in the biopharmaceutical industry have suffered significant setbacks in advanced clinical trials due to adverse safety profiles or lack of efficacy, notwithstanding promising results in earlier studies. Similarly, our future clinical trial results may not be successful for these or other reasons.

This product candidate development risk is heightened by any changes in the planned clinical trials compared to the completed clinical trials. As product candidates are developed through preclinical to early to late stage clinical trials towards approval and commercialization, it is customary that various aspects of the development program, such as manufacturing and methods of administration, are altered along the way in an effort to optimize processes and results. While these types of changes are common and are intended to optimize the product candidates for late stage clinical trials, approval and commercialization, such changes carry the risk that they will not achieve these intended objectives.

Any of these changes could make the results of our planned clinical trials or other future clinical trials we may initiate less predictable and could cause our product candidates to perform differently, including causing toxicities, which could delay completion of our clinical trials, delay approval of our product candidates, and/or jeopardize our ability to commence product sales and generate revenues.

If we experience delays in the enrollment of patients in our clinical trials, our receipt of necessary regulatory approvals could be delayed or prevented.

We may not be able to initiate or continue clinical trials for our product candidates if we are unable to locate and enroll a sufficient number of eligible patients to participate in these trials as required by the FDA or other regulatory authorities. Patient enrollment, a significant factor in the timing of clinical trials, is affected by many factors, including the size and nature of the patient population, the proximity of patients to clinical sites, the eligibility criteria for the trial, the design of the clinical trial, competing clinical trials and clinicians’ and patients’ perceptions as to the potential advantages of the drug being studied in relation to other available therapies, including any new drugs that may be approved for the indications we are investigating.

If we fail to enroll and maintain the number of patients for which the clinical trial was designed, the statistical power of that clinical trial may be reduced, which would make it harder to demonstrate that the product candidate being tested in such clinical trial is safe and effective. Additionally, enrollment delays in our clinical trials may result in increased development costs for our product candidates, which would cause our value to decline and limit our ability to obtain additional financing. Our inability to enroll a sufficient number of patients for any of our current or future clinical trials would result in significant delays or may require us to abandon one or more clinical trials altogether.

A pandemic, epidemic or outbreak of an infectious disease, such as COVID-19, or the perception of their effects, may materially and adversely affect our business, operations and financial condition

Outbreaks of epidemic, pandemic or contagious diseases, such as COVID-19, have and may continue to significantly disrupt our business. Such outbreaks pose the risk that we or our employees, contractors, suppliers, and other partners may be prevented from conducting business activities for an indefinite period of time due to spread of the disease, or due to shutdowns that may be requested or mandated by federal, state and local governmental authorities both within and outside the United States. Business disruptions could include disruptions or restrictions on our ability to travel, as well as temporary closures of our facilities and the facilities of clinical trial sites, service providers, suppliers or contract manufacturers. While it is not possible at this time to estimate the overall impact that the COVID-19 pandemic could have on our business, the continued rapid spread of COVID-19, both across the United States and through much of the world, and the measures taken by the governments of countries and local authorities has disrupted and could delay advancing our product pipeline, could delay our clinical trials, and could delay our overall preclinical activities. Any of these effects could adversely affect our ability to obtain regulatory approval for and to commercialize our product candidates, increase our operating expenses and have a material adverse effect on our business, prospects and financial condition.

The state of California, where our corporate office is located, has issued orders for all residents to remain at home, except as needed for essential activities as a result of the COVID-19 pandemic and we have had to implement work from home policies that may continue for an indefinite period. We have taken steps to protect the health and safety of our employees and community, while working to ensure the sustainability of our business operations as this unprecedented situation continues to evolve.

We continue to evaluate the impact COVID-19 may have on our ability to effectively conduct our business operations as planned while taking into account regulatory, institutional, and government guidance and policies, but there can be no assurance that we will be able to avoid part or all of any impact from the spread of COVID-19 or its consequences. Any shutdowns or other business interruptions could result in material and negative effects to our ability to conduct our business in the manner and on the timelines presently planned, which could have a material adverse effect on our business, prospects and financial condition.

In addition, as set forth in greater detail in Note 8 of the unaudited condensed consolidated financial statements included in this Quarterly report, in April 2020, we received a loan in the aggregate amount of $466,600 under the Paycheck Protection Program (“PPP”) of the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”). Under the PPP, we may apply for and be granted forgiveness for all or part of the PPP loan. Subject to the other requirements and limitations on loan forgiveness, only loan proceeds spent on payroll and other eligible costs during the covered period will qualify for forgiveness. We will be required to repay any portion of the outstanding principal that is not forgiven, along with accrued interest, as set forth in the note evidencing the PPP loan, and we cannot provide any assurance that we will be eligible for loan forgiveness, that we will ultimately apply for forgiveness, or that any amount of the PPP loan will ultimately be forgiven by the SBA.

We intend to rely on third parties to conduct our preclinical studies and clinical trials and perform other tasks. If these third parties do not successfully carry out their contractual duties, meet expected deadlines, or comply with regulatory requirements, we may not be able to obtain regulatory approval for or commercialize our product candidates and our business, financial condition and results of operations could be substantially harmed.

We intend to rely upon third-party CROs, medical institutions, clinical investigators and contract laboratories to monitor and manage data for our ongoing preclinical and clinical programs. Nevertheless, we maintain responsibility for ensuring that each of our clinical trials and preclinical studies is conducted in accordance with the applicable protocol, legal, regulatory, and scientific standards and our reliance on these third parties does not relieve us of our regulatory responsibilities. We and our CROs and other vendors are required to comply with current requirements on good manufacturing practices (“cGMP”), good clinical practices (“GCP”) and good laboratory practice (“GLP”) which are a collection of laws and regulations enforced by the FDA, the EMA and comparable foreign authorities for all of our product candidates in clinical development. Regulatory authorities enforce these regulations through periodic inspections of preclinical study and clinical trial sponsors, principal investigators, preclinical study and clinical trial sites, and other contractors. If we or any of our CROs or vendors fails to comply with applicable regulations, the data generated in our preclinical studies and clinical trials may be deemed unreliable and the FDA, the EMA or comparable foreign authorities may require us to perform additional preclinical studies and clinical trials before approving our marketing applications. We cannot assure you that upon inspection by a given regulatory authority, such regulatory authority will determine that any of our clinical trials comply with GCP regulations. In addition, our clinical trials must be conducted with products produced consistent with cGMP regulations. Our failure to comply with these regulations may require us to repeat clinical trials, which would delay the development and regulatory approval processes.

We may not be able to enter into arrangements with CROs on commercially reasonable terms, or at all. In addition, our CROs will not be our employees, and except for remedies available to us under our agreements with such CROs, we will not be able to control whether or not they devote sufficient time and resources to our ongoing preclinical and clinical programs. If CROs do not successfully carry out their contractual duties or obligations or meet expected deadlines, if they need to be replaced or if the quality or accuracy of the data they obtain is compromised due to the failure to adhere to our protocols, regulatory requirements, or for other reasons, our clinical trials may be extended, delayed or terminated and we may not be able to obtain regulatory approval for or successfully commercialize our product candidates. CROs may also generate higher costs than anticipated. As a result, our business, financial condition and results of operations and the commercial prospects for our product candidates could be materially and adversely affected, our costs could increase, and our ability to generate revenue could be delayed.

Switching or adding additional CROs, medical institutions, clinical investigators or contract laboratories involves additional cost and requires management time and focus. In addition, there is a natural transition period when a new CRO commences work replacing a previous CRO. As a result, delays occur, which can materially impact our ability to meet our desired clinical development timelines. There can be no assurance that we will not encounter similar challenges or delays in the future or that these delays or challenges will not have a material adverse effect on our business, financial condition or results of operations.

Our product candidates are subject to extensive regulation under the FDA, the EMA or comparable foreign authorities, which can be costly and time consuming, cause unanticipated delays or prevent the receipt of the required approvals to commercialize our product candidates.

The clinical development, manufacturing, labeling, storage, record-keeping, advertising, promotion, export, marketing and distribution of our product candidates are subject to extensive

regulation by the FDA and other U.S. regulatory agencies, the EMA or comparable authorities in foreign markets. In the U.S., neither us nor our licensees are permitted to market our product candidates until we or our licensees receive approval of a Biologics License Application (“BLA”), new drug application (“NDA”), or Premarket Application (“PMA”) from the FDA or receive similar approvals abroad. The process of obtaining these approvals is expensive, often takes many years, and can vary substantially based upon the type, complexity and novelty of the product candidates involved. Approval policies or regulations may change and may be influenced by the results of other similar or competitive products, making it more difficult for us to achieve such approval in a timely manner or at all. Any guidance that may result from recent FDA advisory panel discussions may make it more expensive to develop and commercialize such product candidates. In addition, as a company, we have not previously filed BLAs, NDAs, or PMAs with the FDA or filed similar applications with other foreign regulatory agencies. This lack of experience may impede our ability to obtain FDA or other foreign regulatory agency approval in a timely manner, if at all, for our product candidates for which development and commercialization is our responsibility.

Despite the time and expense invested, regulatory approval is never guaranteed. The FDA, the EMA or comparable foreign authorities can delay, limit or deny approval of a product candidate for many reasons, including:

a product candidate may not be deemed safe or effective;

agency officials of the FDA, the EMA or comparable foreign authorities may not find the data from non-clinical or preclinical studies and clinical trials generated during development to be sufficient;

the FDA, the EMA or comparable foreign authorities may not approve our third-party manufacturers’ processes or facilities; or

the FDA, the EMA or a comparable foreign authority may change its approval policies or adopt new regulations.

Our inability to obtain these approvals would prevent us from commercializing our product candidates.

The FDA regulatory approval process is lengthy and time-consuming and we could experience significant delays in the clinical development and regulatory approval of our product candidates.

We may experience delays in commencing and completing clinical trials of our product candidates. We do not know whether planned clinical trials will begin on time, need to be redesigned, enroll patients on time or be completed on schedule, if at all. Any of our future clinical trials may be delayed for a variety of reasons, including delays related to:

the availability of financial resources for us to commence and complete our planned clinical trials;

reaching agreement on acceptable terms with prospective contract research organizations (“CROs”), and clinical trial sites, the terms of which can be subject to extensive negotiation and may vary significantly among different CROs and clinical trial sites;

obtaining IRB approval at each clinical trial site;

obtaining regulatory approval for clinical trials in each country;

recruiting suitable patients to participate in clinical trials;

having patients complete a clinical trial or return for post-treatment follow-up;

clinical trial sites deviating from trial protocol or dropping out of a trial;

adding new clinical trial sites;

developing one or more new formulations or routes of administration; or

manufacturing sufficient quantities of our product candidate for use in clinical trials.

Patient enrollment, a significant factor in the timing of clinical trials, is affected by many factors including the size and nature of the patient population, the proximity of patients to clinical sites, the eligibility criteria for the clinical trial, the design of the clinical trial, competing clinical trials and clinicians’ and patients’ perceptions as to the potential advantages of the product candidate being studied in relation to other available therapies, including any new drugs that may be approved for the indications we are investigating. In addition, significant numbers of patients who enroll in our clinical trials may drop out during the clinical trials as a result of being offered a liver transplant in the case of ACLF and CLF patients or curative therapy for HCV infection in the case of HCV-POLT patients, or otherwise.various reasons. We believe we haveit appropriately accountedaccounts for such increased risk of dropout rates in our trials when determining expected clinical trial timelines, but we cannot assure you that our assumptions are correct, or that weit will not experience higher numbers of dropouts than anticipated, which would result in the delay of completion of such trials beyond our expected timelines.

We could encounter delays if physicians encounter unresolved ethical issues associated with enrolling patients in clinical trials of emricasanour product candidates in lieu of prescribing existing treatments that have established safety and efficacy profiles. Further, a clinical trial may be suspended or terminated by us, the IRBs in the institutions in which such trials are being conducted, the Data Monitoring Committeedata monitoring committee for such trial, or by the FDA or other regulatory authorities due to a number of factors, including failure to conduct the clinical trial in accordance with regulatory requirements or our clinical protocols, inspection of the clinical trial operations or trial site by the FDA or other regulatory authorities resulting in the imposition of a clinical hold, unforeseen safety issues or adverse side effects, failure to demonstrate a benefit from using a drugproduct candidate, changes in governmental regulations or administrative actions or lack of adequate funding to continue the clinical trial. If we experience termination of, or delays in the completion of, any clinical trial of emricasan,our product candidates, the commercial prospects for emricasansuch product candidate will be

harmed, and our ability to generate product revenues will be delayed. In addition, any delays in completing our clinical trials will increase our costs, slow down our product development and approval process and jeopardize our ability to commence product sales and generate revenues. Any of these occurrences may harm our business, prospects, financial condition and results of operations significantly. Furthermore, many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of regulatory approval of emricasan.a product candidate.

IfIn connection with clinical trials, we are unable to obtain regulatoryface risks that:

IRBs may delay approval of, emricasan, or fail to approve, a clinical trial at a prospective site;

there may be a limited number of, and significant competition for, suitable patients for enrollment in the clinical trials;

there may be slower than expected rates of patient recruitment and enrollment;

patients may fail to complete the clinical trials;

there may be an inability or unwillingness of patients or medical investigators to follow our clinical trial protocols;

there may be an inability to monitor patients adequately during or after treatment;

there may be termination of the clinical trials by one or more clinical trial sites;

unforeseen ethical or safety issues may arise;

conditions of patients may deteriorate rapidly or unexpectedly, which may cause the patients to become ineligible for a clinical trial or may prevent our product candidates from demonstrating efficacy or safety;

patients may die or suffer other adverse effects for reasons that may or may not be related to our product candidate being tested;

we willmay not be able to commercialize this drug candidatesufficiently standardize certain of the tests and procedures that are part of our business will be adversely impacted.

We have not obtained regulatory approval for any drug candidate. If we fail to obtain regulatory approval to market emricasan, our only drug candidate, we will be unable to sell emricasan, which will significantly impair our ability to generate any revenues. To receive approval, we must, among other things, demonstrate with substantial evidence from clinical trials that the drugbecause such tests and procedures are highly specialized and involve a high degree of expertise;

a product candidate is both safe and effective for each indication for which approval is sought, and failure can occurmay not prove to be efficacious in any stage of development. Satisfaction of the approval requirements typically takes several years and the time and money needed to satisfy them may vary substantially, based on the type, complexity and novelty of the pharmaceutical product. We have not commenced any Phase 3 trials of emricasan to date, and we cannot predict ifall or when our planned clinical trials will generate the data necessary to support an NDA, and if or when we might receive regulatory approvals for emricasan.some patient populations;

Emricasan could fail to receive regulatory approval for many reasons, including the following:

 

the FDA or comparable foreign regulatory authorities may disagree with the design or implementation of our clinical trials;

we may be unable to demonstrate to the satisfactionresults of the FDA or comparable foreign regulatory authorities that emricasan is safe and effective for anyclinical trials may not confirm the results of its proposed indications;earlier trials;

the results of the clinical trials may not meet the level of statistical significance required by the FDA or comparable foreignother regulatory authoritiesagencies; and

a product candidate may not have a favorable risk/benefit assessment in the disease areas studied.

We cannot assure you that any future clinical trial for approval;

our product candidates will be started or completed on schedule, or at all. Any failure or significant delay in completing clinical trials for our product candidates would harm the commercial prospects for such product candidate and adversely affect our financial results. Difficulties and failures can occur at any stage of clinical development, and we maycannot assure you that it will be unableable to demonstrate that emricasan’s clinicalsuccessfully complete the development and commercialization of any product candidate in any indication.

Changes in funding for the FDA and other benefits outweigh its safety risks;

the FDAgovernment agencies could hinder their ability to hire and retain key leadership and other personnel, or comparable foreign regulatory authorities may disagree withotherwise prevent new products and services from being developed or commercialized in a timely manner, which could negatively impact our interpretation of data from preclinical studies or clinical trials;business.

the data collected from clinical trials of emricasan may not be sufficient to the satisfactionThe ability of the FDA or comparable foreignto review and approve new products can be affected by a variety of factors, including (i) government budget and funding levels, (ii) the ability to hire and retain key personnel and accept the payment of user fees and (iii) statutory, regulatory authoritiesand policy changes. Average review times at the agency have fluctuated in recent years as a result. In addition, government funding of other government agencies that fund research and development activities is subject to support the submission of an NDA or other comparable submission in foreign jurisdictions or to obtain regulatory approval in the United States or elsewhere;political process, which is inherently fluid and unpredictable.

Disruptions at the FDA and other agencies may also slow the time necessary for new drugs to be reviewed and/or comparable foreignapproved by necessary government agencies, which would adversely affect its business. For example, over the last several years, including for 35 days beginning on December 22, 2018, the U.S. government has shut down several times and certain regulatory authorities may failagencies, such as the FDA, have had to approvefurlough critical FDA employees and stop critical activities. If a prolonged government shutdown occurs, it could significantly impact the manufacturing processes or facilities of third-party manufacturers with which we contract for clinical and commercial supplies; and

the approval policies or regulationsability of the FDA or comparable foreignto timely review and process our regulatory authorities may significantly change insubmissions, which could have a manner renderingmaterial adverse effect on our clinical data insufficient for approval.

This lengthy approval process as well as the unpredictability of future clinical trial results may result in our failure to obtain regulatory approval to market emricasan, which would significantly harm our business, prospects, financial condition and results of operations. In addition, even if we were to obtain approval, regulatory authorities may grant approval contingent on the performance of costly post-marketing clinical trials or the imposition of a risk evaluation and mitigation strategy, or REMS, requiring substantial additional post-approval safety measures. Moreover, any approvals that we obtain may not cover all of the clinical indications for which we are seeking approval, or could contain significant limitations in the form of narrow indications, warnings, precautions or contra-indications with respect to conditions of use. In such event, our ability to generate revenues would be greatly reduced and our business would be harmed.business.

Even if we obtain and maintain regulatory approval for emricasana product candidate in one jurisdiction, we may never obtain regulatory approval for emricasansuch product candidate in any other jurisdiction, which would limit our market opportunities and adversely affect our business.

Obtaining and maintaining regulatory approval for emricasana product candidate in one jurisdiction does not guarantee that we will be able to obtain or maintain regulatory approval in any other jurisdiction. For example, even if the FDA grants marketing approval for a drugproduct candidate, comparable regulatory authorities in foreign countries must also

approve the manufacturing, marketing and

promotion of the drugproduct candidate in those countries. Approval procedures vary among jurisdictions and can involve requirements and administrative review periods different from, and greater than, those in the United States, including additional preclinical studies or clinical trials. In many countries outside the United States, a drugproduct candidate must be approved for reimbursement before it can be approved for sale in that country. In some cases, the price that we intend to charge for our products is also subject to approval.

We expectare expected to submit an MAAa marketing authorization application (“MAA”) to the European Medicines Agency, or EMA for approval of emricasana product candidate in the EU.European Union. As with the FDA, obtaining approval of an MAA from the EMA is a similarly lengthy and expensive process, and the EMA has its own procedures for approval of drugproduct candidates. Even if a product is approved, the FDA or the EMA, as the case may be, may limit the indications for which the product may be marketed, require extensive warnings on the product labeling, require a REMS or require expensive and time-consuming clinical trials or reporting as conditions of approval. Regulatory authorities in countries outside of the United States and the EU also have requirements for approval of drugproduct candidates with which we must comply prior to marketing in those countries. Obtaining foreign regulatory approvals and compliance with foreign regulatory requirements could result in significant delays, difficulties and costs for us and could delay or prevent the introduction of our products in certain countries.

Further, clinical trials conducted in one country may not be accepted by regulatory authorities in other countries, and regulatory approval in one country does not ensure approval in any other country, while a failure or delay in obtaining regulatory approval in one country may have a negative effect on the regulatory approval process in others. Also, regulatory approval for any drugproduct candidate may be withdrawn. A failure or delay in obtaining regulatory approval in one country may have a negative effect on the regulatory process in others. If we fail to comply with the regulatory requirements in international markets and/or receive applicable marketing approvals, our target market will be reduced and our ability to realize the full market potential of emricasana product candidate will be harmed, which would adversely affect our business, prospects, financial condition and results of operations.

Even if weany of our product candidates receive regulatory approval, for emricasan, we will be subject to ongoingour product candidates may still face future development and regulatory obligations and continued regulatory review, which may result in significant additional expense. Additionally, emricasan, if approved, could be subject to labeling and other restrictions and market withdrawal and we may be subject to penalties if we fail to comply with regulatory requirements or experience unanticipated problems with emricasan.difficulties.

AnyIf any of our product candidates receive regulatory approvals that we receive for emricasanapproval, the FDA, the EMA or comparable foreign authorities may be subject to limitationsstill impose significant restrictions on the approved indicated uses for which emricasan may be marketed or tomarketing of the conditions of approval,product candidates or containimpose ongoing requirements for potentially costly post-marketing testing, including Phase 4 clinical trials,post-approval studies and surveillance to monitor the safety and efficacy of the drug candidate. The FDA may also require a REMS in order to approve emricasan, which could entail requirements for a medication guide, physician communication plans or additional elements to ensure safe use, such as restricted distribution methods, patient registries and other risk minimization tools.trials. In addition, ifregulatory agencies subject a product, its manufacturer and the FDA ormanufacturer’s facilities to continual review and periodic inspections. If a comparable foreign regulatory authority approves emricasan, the manufacturing processes, labeling, packaging, distribution, adverse event reporting, storage, advertising, promotion, import, export and recordkeeping for emricasan will be subject to extensive and ongoing regulatory requirements. These requirements include submissions of safety and other post-marketing information and reports, registration, as well as continued compliance with current good manufacturing practices, or cGMPs, and current good clinical practices, or cGCPs, for any clinical trials that we conduct post-approval. Later discovery ofagency discovers previously unknown problems with emricasan,a product, including adverse events of unanticipated severity or frequency, or problems with our third-party manufacturers or manufacturing processes, or failure to comply withthe facility where the product is manufactured, a regulatory requirements,agency may result in, among other things:

impose restrictions on the marketingthat product, our licensees or manufacturing of emricasan,us, including requiring withdrawal of the product from the market,market. Our product candidates will also be subject to ongoing FDA, the EMA or voluntary or mandatorycomparable foreign authorities’ requirements for the labeling, packaging, storage, advertising, promotion, record-keeping and submission of safety and other post-market information on the drug. If our product recalls;candidates fail to comply with applicable regulatory requirements, a regulatory agency may:

fines,issue warning letters or holds onother notices of possible violations;

impose civil or criminal penalties or fines or seek disgorgement of revenue or profits;

suspend any ongoing clinical trials;

refusal by the FDArefuse to approve pending applications or supplements to approved applications filed by us or suspensionour licensees;

withdraw any regulatory approvals;

impose restrictions on operations, including costly new manufacturing requirements, or revocationshut down our manufacturing operations; or

seize or detain products or require a product recall.

The FDA, the EMA and comparable foreign authorities actively enforce the laws and regulations prohibiting the promotion of license approvals;off-label uses.

product seizure or detention, or refusal to permitThe FDA, the import or export of emricasan;EMA and

injunctions or comparable foreign authorities strictly regulate the imposition of civil or criminal penalties.

The FDA’s and other regulatory authorities’ policies may change and additional government regulationspromotional claims that may be enactedmade about prescription products, such as our product candidates, if approved. In particular, a product may not be promoted for uses that could prevent, limitare not approved by the FDA, the EMA or delay regulatory approval of emricasan. We cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative action, eithercomparable foreign authorities as reflected in the United States or abroad.product’s approved labeling. If we are slow or unable to adapt to changesreceive marketing approval for our product candidates for our proposed indications, physicians may nevertheless use our products for their patients in existing requirements ora manner that is inconsistent with the adoption of new requirements or policies, orapproved label, if the physicians personally believe in their professional medical judgment that our products could be used in such manner. However, if we are not ablefound to maintain regulatory compliance, we may losehave promoted our products for any marketing approvaloff-label uses, the federal government could levy civil, criminal or administrative penalties, and seek fines against us. Such enforcement has become more common in the industry. The FDA, the EMA or comparable foreign authorities could also request that we may have obtained andenter into a consent decree or a corporate integrity agreement, or seek a permanent injunction against us under which specified promotional conduct is monitored, changed or curtailed. If we may not achieve or sustain profitability,cannot successfully manage the promotion of our product candidates, if approved, we could become subject to significant liability, which would materially adversely affect our business, prospects, financial condition and results of operations.

Even if we obtain regulatory approval for emricasan,a product candidate, the product may not gain market acceptance among physicians, patients tertiary care centers, transplant centers and others in the medical community.

If emricasana product candidate is approved for commercialization, its acceptance will depend on a number of factors, including:

 

the clinical indications for which emricasanthe product is approved;

physicians major operators of tertiary care centers and transplant centers and patients considering emricasana product candidate as a safe and effective treatment;

the potential and perceived advantages of emricasanthe product over alternative treatments;

the prevalence and severity of any side effects;

product labeling or product insert requirements of the FDA or other regulatory authorities;

the timing of market introduction of emricasanthe product as well as competitive products;

the cost of treatment in relation to alternative treatments;

the availability of adequate reimbursement and pricing by third-party payors and government authorities;

relative convenience and ease of administration; and

the effectiveness of our sales and marketing efforts.

If emricasana product candidate is approved but fails to achieve market acceptance among physicians, patients or others in the medical community, we will not be able to generate significant revenues, which would have a material adverse effect on our business, prospects, financial condition and results of operations.

CoverageIf our competitors have product candidates that are approved faster, marketed more effectively, are better tolerated, have a more favorable safety profile or are demonstrated to be more effective than ours, our commercial opportunity may be reduced or eliminated.

The biopharmaceutical industry is characterized by rapidly advancing technologies, intense competition and a strong emphasis on proprietary products. While we believe that our technology, knowledge, experience and scientific resources provide us with competitive advantages, we face potential competition from many different sources, including commercial biopharmaceutical enterprises, academic institutions, government agencies and private and public research institutions. Any product candidates that we successfully develop and commercialize will compete with existing therapies and new therapies that may become available in the future.

Many of our competitors have significantly greater financial resources and expertise in research and development, manufacturing, preclinical studies, clinical trials, regulatory approvals and marketing approved products than we do. Some of our competitors include companies such as Allergan Aesthetics, Merz, Galderma, RepliCel Life Sciences Inc., Kerastem, Cassiopea, Inc., Johnson & Johnson, and Merck & Co, Inc. Smaller or early-stage companies may also prove to be significant competitors, particularly through license arrangements with large and established companies. Our competitors may succeed in developing technologies and therapies that are more effective, better tolerated or less costly than any which we are developing, or that would render our product candidates obsolete and noncompetitive. Even if we obtain regulatory approval for any of our product candidates, our competitors may succeed in obtaining regulatory approvals for their products earlier than we do. We will also face competition from these third parties in recruiting and retaining qualified scientific and management personnel, in establishing clinical trial sites and patient registration for clinical trials, and in acquiring and in-licensing technologies and products complementary to our programs or advantageous to our business.

The key competitive factors affecting the success of each of our product candidates, if approved, are likely to be its efficacy, safety, tolerability, frequency and route of administration, convenience and price, the level of branded and generic competition and the availability of coverage and reimbursement from government and other third-party payors.

We are subject to a multitude of manufacturing risks, any of which could substantially increase our costs and limit supply of our product candidates.

The process of manufacturing our product candidates is complex, highly regulated, and subject to several risks. For example, the process of manufacturing our product candidates is extremely susceptible to product loss due to contamination, equipment failure or improper installation or operation of equipment, or vendor or operator error. Even minor deviations from normal manufacturing processes for any of our product candidates could result in reduced production yields, product defects, and other supply disruptions. If microbial, viral, or other contaminations are discovered in our product candidates or in the manufacturing facilities in which our product candidates are made, such manufacturing facilities may need to be closed for an extended period of time to investigate and remedy the contamination. In addition, the manufacturing facilities in which our product candidates are made could be adversely affected by equipment failures, labor shortages, natural disasters, public health crises, pandemics and epidemics, such as the recent coronavirus disease 2019 (COVID-19), power failures and numerous other factors.

In addition, any adverse developments affecting manufacturing operations for our product candidates may result in shipment delays, inventory shortages, lot failures, withdrawals or recalls, or other interruptions in the supply of our product candidates. We also may need to take inventory write-offs and incur other charges and expenses for product candidates that fail to meet specifications, undertake costly remediation efforts, or seek costlier manufacturing alternatives.

We intend to rely primarily on third parties to manufacture our preclinical and clinical drug supplies, and our business, financial condition and results of operations could be harmed if those third parties fail to provide us with sufficient quantities of drug product, or fail to do so at acceptable quality levels or prices.

We currently have the infrastructure or capability internally to manufacture certain of our preclinical and clinical drug supplies for use in our clinical trials, but we have engaged a contract manufacturing organization and once the technology transfer process is complete, we will rely completely on third parties for such manufacturing. We lack the resources and the capability to manufacture any of our product candidates on a late-stage clinical or commercial scale. We will rely on our manufacturers to purchase from third-party suppliers the materials necessary to produce our product candidates for our clinical trials. There are a limited number of suppliers for raw materials that we use to manufacture our product candidates, and there may be limiteda need to identify alternate suppliers to prevent a possible disruption of the manufacture of the materials necessary to produce our product candidates for our clinical trials, and, if approved, ultimately for commercial sale. We do not have any control over the process or unavailable in certain market segments for emricasan, which could make it difficult for us to sell emricasan profitably.

Government authorities and third-party payors, such as private health insurers and health maintenance organizations, decide which drugs they will cover andtiming of the amountacquisition of reimbursement. Reimbursementthese raw materials by our manufacturers. Although we generally do not begin a third-party payor may depend uponclinical trial unless we believe we have a number of factors, including the third-party payor’s determination that usesufficient supply of a product is:candidate to complete such clinical trial, any significant delay or discontinuity in the supply of a product candidate, or the raw material components thereof, for an ongoing clinical trial due to the need to replace a third-party manufacturer could considerably delay completion of our clinical trials, product testing and potential regulatory approval of our product candidates, which could harm our business, financial condition and results of operations.

We and our contract manufacturers are subject to significant regulation with respect to manufacturing our product candidates. The manufacturing facilities on which we rely may not continue to meet regulatory requirements.

All entities involved in the preparation of therapeutics for clinical trials or commercial sale, including our contract manufacturers for our product candidates, are subject to extensive regulation. Components of a finished therapeutic product approved for commercial sale or used in late-stage clinical trials must be manufactured in accordance with cGMP. These regulations govern manufacturing processes and procedures and the implementation and operation of quality systems to control and assure the quality of investigational products and products approved for sale. Poor control of production processes can lead to the introduction of contaminants or to inadvertent changes in the properties or stability of our product candidates that may not be detectable in final product testing. We or our contract manufacturers must supply all necessary documentation in support of a BLA, NDA, or PMA or MAA on a timely basis and must adhere to GLP and cGMP regulations enforced by the FDA, the EMA or comparable foreign authorities through their facilities inspection program. Some of our contract manufacturers may not have produced a commercially approved pharmaceutical product and therefore may not have obtained the requisite regulatory authority approvals to do so. The facilities and quality systems of some or all of our third-party contractors must pass a pre-approval inspection for compliance with the applicable regulations as a condition of regulatory approval of our product candidates or any of our other potential products. In addition, the regulatory authorities may, at any time, audit or inspect a manufacturing facility involved with the preparation of our product candidates or any of our other potential products or the associated quality systems for compliance with the regulations applicable to the activities being conducted. Although we plan to oversee the contract manufacturers, we cannot control the manufacturing process of, and are completely dependent on, our contract manufacturing partners for compliance with the regulatory requirements. If these facilities do not pass a pre-approval plant inspection, regulatory approval of the products may not be granted or may be substantially delayed until any violations are corrected to the satisfaction of the regulatory authority, if ever.

The regulatory authorities also may, at any time following approval of a covered benefit under its health plan;

safe, effectiveproduct for sale, audit the manufacturing facilities of our third-party contractors. If any such inspection or audit identifies a failure to comply with applicable regulations or if a violation of our product specifications or applicable regulations occurs independent of such an inspection or audit, we or the relevant regulatory authority may require remedial measures that may be costly or time consuming for us or a third party to implement, and medically necessary;

appropriate forthat may include the specific patient;

cost-effective; and

neither experimental nor investigational.

Obtaining coveragetemporary or permanent suspension of a clinical trial or commercial sales or the temporary or permanent closure of a facility. Any such remedial measures imposed upon us or third parties with whom we contract could materially harm our business, financial condition and reimbursement approvalresults of operations.

If we or any of our third-party manufacturers fail to maintain regulatory compliance, the FDA, the EMA or comparable foreign authorities can impose regulatory sanctions including, among other things, refusal to approve a pending application for a product candidate, withdrawal of an approval, or suspension of production. As a result, our business, financial condition and results of operations may be materially and adversely affected.

Additionally, if supply from one manufacturer is interrupted, an alternative manufacturer would need to be qualified through a governmentBLA, NDA, or PMA supplement or MAA variation, or equivalent foreign regulatory filing, which could result in further delay. The regulatory agencies may also require additional studies or trials if a new manufacturer is relied upon for commercial production. Switching manufacturers may involve substantial costs and is likely to result in a delay in our desired clinical and commercial timelines.

These factors could cause us to incur higher costs and could cause the delay or termination of clinical trials, regulatory submissions, required approvals, or commercialization of our product candidates. Furthermore, if our suppliers fail to meet contractual requirements and we are unable to secure one or more replacement suppliers capable of production at a substantially equivalent cost, our clinical trials may be delayed or we could lose potential revenue.

Any license agreement that we may enter into in the future may not be successful, which could adversely affect our ability to develop and commercialize our current and potential future product candidates.

We may seek license agreements with biopharmaceutical companies for the development or commercialization of our current and potential future product candidates. To the extent that we decide to enter into license agreements, we will face significant competition in seeking appropriate licensees. Moreover, license agreements are complex and time consuming to negotiate, execute and implement. We may not be successful in our efforts to establish and implement license agreements or other third-party payor isalternative arrangements should we choose to enter into such arrangements, and the terms of the arrangements may not be favorable to us. If and when we enter into additional license agreements with a time-consumingthird party for development and costly processcommercialization of a product candidate, we can expect to relinquish some or all of the control over the future success of that could require us to provideproduct candidate to the payor supporting scientific, clinical and cost-effectiveness data for the usethird party. The success of our license agreements will depend heavily on the efforts and activities of our licensees. Licensees generally have significant discretion in determining the efforts and resources that they will apply to the product candidate.

Disagreements between parties to a license arrangement can lead to delays in developing or commercializing the applicable product candidate and can be difficult to resolve in a mutually beneficial manner. In some cases, licenses with biopharmaceutical companies and other third parties are terminated or allowed to expire by the other party. Any such termination or expiration would adversely affect our business, financial condition and results of operations.

If we are unable to develop our own commercial organization or enter into agreements with third parties to sell and market our product candidates, we may be unable to generate significant revenues.

We do not have a sales and marketing organization, and we have no experience as a company in the sales, marketing and distribution of pharmaceutical products. If any of our product candidates are approved for commercialization, we may be required to develop our sales, marketing and distribution capabilities, or make arrangements with a third party to perform sales and marketing services. Developing a sales force for any resulting product or any product resulting from any of our other product candidates is expensive and time consuming and could delay any product launch. We may be unable to establish and manage an effective sales force in a timely or cost-effective manner, if at all, and any sales force we do establish may not be capable of generating sufficient demand for our product candidates. To the extent that we enter into arrangements with licensees or other third parties to perform sales and marketing services, our product revenues are likely to be lower than if we marketed and sold our product candidates independently. If we are unable to establish adequate sales and marketing capabilities, independently or with others, we may not be able to generate significant revenues and may not become profitable.

If we fail to obtain and sustain an adequate level of reimbursement for our potential products by third-party payors, potential future sales would be materially adversely affected.

There will be no viable commercial market for our product candidates, if approved, without reimbursement from third-party payors. Reimbursement policies may be affected by future healthcare reform measures. We cannot be certain that reimbursement will be available for our current product candidates or any other product candidate we may develop. Additionally, even if there is a viable commercial market, if the level of reimbursement is below our expectations, our anticipated revenue and gross margins will be adversely affected.

Third-party payors, such as government or private healthcare insurers, carefully review and increasingly question and challenge the coverage of and the prices charged for drugs. Reimbursement rates from private health insurance companies vary depending on the company, the insurance plan and other factors. Reimbursement rates may be based on reimbursement levels already set for lower cost drugs and may be incorporated into existing payments for other services. There is a current trend in the U.S. healthcare industry toward cost containment.

Large public and private payors, managed care organizations, group purchasing organizations and similar organizations are exerting increasing influence on decisions regarding the use of, and reimbursement levels for, particular treatments. Such third-party payors, including Medicare, may question the coverage of, and challenge the prices charged for, medical products and services, and many third-party payors limit coverage of or reimbursement for newly approved healthcare products. In particular, third-party payors may limit the covered indications. Cost-control initiatives could decrease the price we might establish for products, which could result in product revenues being lower than anticipated. We believe our drugs will be priced significantly higher than existing generic drugs and consistent with current branded drugs. If we are unable to show a significant benefit relative to existing generic drugs, Medicare, Medicaid and private payors may not be willing to provide data sufficientreimbursement for our drugs, which would significantly reduce the likelihood of our products gaining market acceptance.

We expect that private insurers will consider the efficacy, cost-effectiveness, safety and tolerability of our potential products in determining whether to gain acceptance with respect to coverageapprove reimbursement for such products and reimbursement. Ifat what level. Obtaining these approvals can be a time consuming and expensive process. Our business, financial condition and results of operations would be materially adversely affected if we do not receive approval for reimbursement of our futurepotential products from private insurers on a timely or satisfactory basis. Limitations on coverage could also be imposed at the local Medicare

carrier level or by fiscal intermediaries. Medicare Part D, which provides a pharmacy benefit to Medicare patients as discussed below, does not require participating prescription drug plans to cover all drugs within a class of products. Our business, financial condition and results of operations could be materially adversely affected if Part D prescription drug plans were to limit access to, or deny or limit reimbursement of, our product candidates or other potential products.

Reimbursement systems in international markets vary significantly by country and by region, and reimbursement approvals must be obtained on a country-by-country basis. In many countries, the product cannot be commercially launched until reimbursement is unavailableapproved. In some foreign markets, prescription pharmaceutical pricing remains subject to continuing governmental control even after initial approval is granted. The negotiation process in some countries can exceed 12 months. To obtain reimbursement or limitedpricing approval in scope or amount, or if pricing is set at unsatisfactory levels,some countries, we may be unablerequired to achieveconduct a clinical trial that compares the cost-effectiveness of our products to other available therapies.

If the prices for our potential products are reduced or sustain profitability.

We intend to seek approval to market emricasan in both the United Statesif governmental and in selected foreign jurisdictions. If we obtain approval in one or more foreign jurisdictions for emricasan, we will be subject to rules and regulations in those jurisdictions. In some foreign countries, particularly those in the EU, the pricing of prescription pharmaceuticals and biologics is subject to governmental control. In these countries, pricing negotiations with governmental authorities can take considerable time after obtaining marketing approval for a drug candidate. In addition, market acceptance and sales of emricasan will depend significantly on the

availability ofother third-party payors do not provide adequate coverage and reimbursement from third-party payorsof our drugs, our future revenue, cash flows and prospects for emricasanprofitability will suffer.

Current and future legislation may increase the difficulty and cost of commercializing our product candidates and may be affected by existing and future health care reform measures.affect the prices we may obtain if our product candidates are approved for commercialization.

In both the United StatesU.S. and certainsome foreign jurisdictions, there have been a number of adopted and proposed legislative and regulatory changes toregarding the health carehealthcare system that could impactprevent or delay regulatory approval of our product candidates, restrict or regulate post-marketing activities and affect our ability to profitably sell any of our products profitably. product candidates for which we obtain regulatory approval.

In particular,the U.S., the Medicare Prescription Drug, Improvement, and Modernization Act of 2003 revised(“MMA”) changed the way Medicare covers and pays for pharmaceutical products. Cost reduction initiatives and other provisions of this legislation could limit the coverage and reimbursement rate that we receive for any of our approved products. While the MMA only applies to drug benefits for Medicare beneficiaries, private payors often follow Medicare coverage policy and payment methodology for many products under Medicarelimitations in setting their own reimbursement rates. Therefore, any reduction in reimbursement that results from the United States. This has resultedMMA may result in lower rates of reimbursement. a similar reduction in payments from private payors.

In March 2010, the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Affordability Reconciliation Act collectively,of 2010 (collectively the Healthcare Reform Act,“PPACA”), was enacted. The Healthcare Reform Act, among other things, increasesPPACA was intended to broaden access to health insurance, reduce or constrain the minimum Medicaid rebates owed by manufacturersgrowth of healthcare spending, enhance remedies against healthcare fraud and abuse, add new transparency requirements for healthcare and health insurance industries, impose new taxes and fees on the health industry and impose additional health policy reforms. The PPACA increased manufacturers’ rebate liability under the Medicaid Drug Rebate Program by increasing the minimum rebate amount for both branded and extendsgeneric drugs and revised the definition of “average manufacturer price,” (“AMP”), which may also increase the amount of Medicaid drug rebates manufacturers are required to pay to states. The legislation also expanded Medicaid drug rebates and created an alternative rebate program to individuals enrolled in Medicaid managed care organizations, establishes annual fees on manufacturersformula for certain new formulations of certain existing products that is intended to increase the rebates due on those drugs. The Centers for Medicare & Medicaid Services, which administers the Medicaid Drug Rebate Program, also has proposed to expand Medicaid rebates to the utilization that occurs in the territories of the U.S., such as Puerto Rico and the Virgin Islands. Further, beginning in 2011, the PPACA imposed a significant annual fee on companies that manufacture or import branded prescription drugs, requiresdrug products and required manufacturers to participateprovide a 50% discount off the negotiated price of prescriptions filled by beneficiaries in a discount program for certain outpatient drugs underthe Medicare Part D coverage gap, referred to as the “donut

hole.” Legislative and promotes programs that increaseregulatory proposals have been introduced at both the state and federal government’s comparative effectiveness research, which will impact existing government healthcare programslevel to expand post-approval requirements and will result in the development of new programs. An expansion in the government’s role in the U.S. healthcare industry may further lower rates of reimbursementrestrict sales and promotional activities for pharmaceutical products.

Other legislative changesThere have been proposedrecent public announcements by members of the U.S. Congress, President Trump and adopted inhis administration regarding their plans to repeal and replace the United States since the Healthcare Reform Act was enacted. On August 2, 2011, the Budget Control Act of 2011, among other things, created measures for spending reductions by Congress. A Joint Select CommitteePPACA and Medicare. For example, on Deficit Reduction, tasked with recommending a targeted deficit reduction of at least $1.2 trillion for the years 2013 through 2021, was unable to reach required goals, thereby triggering the legislation’s automatic reduction to several government programs. This includes aggregate reductions of Medicare payments to providers up to 2% per fiscal year. On January 2, 2013,December 22, 2017, President ObamaTrump signed into law the American Taxpayer ReliefTax Cuts and Jobs Act of 2012, or the ATRA,2017, which, delayed for another two months the budget cuts mandated by these sequestration provisions of the Budget Control Act of 2011. On March 1, 2013, the President signed an executive order implementing sequestration, and on April 1, 2013, the 2% Medicare payment reductions went into effect. The ATRA also, among other things, reduced Medicare paymentseliminated the individual mandate requiring most Americans (other than those who qualify for a hardship exemption) to several providers, including hospitals, imaging centerscarry a minimum level of health coverage, effective January 1, 2019. We are not sure whether additional legislative changes will be enacted, or whether the FDA regulations, guidance or interpretations will be changed, or what the impact of such changes on the marketing approvals of our product candidates, if any, may be. In addition, increased scrutiny by the U.S. Congress of the FDA’s approval process may significantly delay or prevent marketing approval, as well as subject us to more stringent product labeling and cancer treatment centers,post-marketing approval testing and increasedother requirements.

In Europe, the statuteUnited Kingdom has withdrawn from the European Union. A significant portion of limitations period for the governmentregulatory framework in the United Kingdom is derived from the regulations of the European Union, and the EMA is currently located in the United Kingdom. We cannot predict what consequences the withdrawal of the United Kingdom from the European Union, if it occurs, might have on the regulatory frameworks of the United Kingdom or the European Union, or on our future operations, if any, in these jurisdictions.

We are subject to recover overpayments“fraud and abuse” and similar laws and regulations, and a failure to providers from threecomply with such regulations or prevail in any litigation related to five years.noncompliance could harm our business, financial condition and results of operations.

There have been, and likely will continueIn the U.S., we are subject to be, legislative and regulatory proposals at thevarious federal and state levels directed at broadeninghealthcare “fraud and abuse” laws, including anti-kickback laws, false claims laws and other laws intended, among other things, to reduce fraud and abuse in federal and state healthcare programs. The federal Anti-Kickback Statute makes it illegal for any person, including a prescription drug manufacturer, or a party acting on its behalf, to knowingly and willfully solicit, receive, offer or pay any remuneration that is intended to induce the availabilityreferral of healthcare and containingbusiness, including the purchase, order or lowering the costprescription of healthcare. We cannot predict the initiatives thata particular drug, or other good or service for which payment in whole or in part may be adoptedmade under a federal healthcare program, such as Medicare or Medicaid. Although we seek to structure our business arrangements in compliance with all applicable requirements, these laws are broadly written, and it is often difficult to determine precisely how the future. law will be applied in specific circumstances. Accordingly, it is possible that our practices may be challenged under the federal Anti-Kickback Statute.

The continuing effortsfederal False Claims Act prohibits anyone from, among other things, knowingly presenting or causing to be presented for payment to the government, including the federal healthcare programs, claims for reimbursed drugs or services that are false or fraudulent, claims for items or services that were not provided as claimed, or claims for medically unnecessary items or services. Under the Health Insurance Portability and Accountability Act of 1996, we are prohibited from knowingly and willfully executing a scheme to defraud any healthcare benefit program, including private payors, or knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items or services to obtain money or property of any healthcare benefit program. Violations of fraud and abuse laws may be punishable by criminal or civil sanctions, including penalties, fines or exclusion or suspension from federal and state healthcare programs such as Medicare and Medicaid and debarment from contracting with the U.S. government. In addition, private individuals have the ability to bring actions on behalf of the government insurance companies, managed care organizations and other payorsunder the federal False Claims Act as well as under the false claims laws of several states.

Many states have adopted laws similar to the federal Anti-Kickback Statute, some of which apply to the referral of patients for healthcare services reimbursed by any source, not just governmental payors. In addition, some states have passed laws that require pharmaceutical companies to containcomply with the April 2003 Office of Inspector General Compliance Program Guidance for Pharmaceutical Manufacturers or reduce coststhe Pharmaceutical Research and Manufacturers of healthcare and/America’s Code on Interactions with Healthcare Professionals. Several states also impose other marketing restrictions or imposerequire pharmaceutical companies to make marketing or price controls may adversely affect:

disclosures to the demand for emricasan,state. There are ambiguities as to what is required to comply with these state requirements and if we obtainfail to comply with an applicable state law requirement, it could be subject to penalties.

Neither the government nor the courts have provided definitive guidance on the application of fraud and abuse laws to our business. Law enforcement authorities are increasingly focused on enforcing these laws, and it is possible that some of our practices may be challenged under these laws. Efforts to ensure that our business arrangements with third parties will comply with applicable healthcare laws and regulations will involve substantial costs. If we are found in violation of one of these laws, we could be subject to significant civil, criminal and administrative penalties, damages, fines, exclusion from governmental funded federal or state healthcare programs and the curtailment or restructuring of our operations. If this occurs, our business, financial condition and results of operations may be materially adversely affected.

If we face allegations of noncompliance with the law and encounter sanctions, our reputation, revenues and liquidity may suffer, and any of our product candidates that are ultimately approved for commercialization could be subject to restrictions or withdrawal from the market.

Any government investigation of alleged violations of law could require us to expend significant time and resources in response, and could generate negative publicity. Any failure to comply with ongoing regulatory approval;

our ability to set a price that we believe is fair for our products;

requirements may significantly and adversely affect our ability to generate revenues from any of our product candidates that are ultimately approved for commercialization. If regulatory sanctions are applied or if regulatory approval is withdrawn, our business, financial condition and achieve or maintain profitability;

the levelresults of taxes that we are required to pay; and

the availability of capital.

Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors, which mayoperations will be adversely affect our future profitability.

We currently have no marketing and sales organization and have no experience in marketing products. Ifaffected. Additionally, if we are unable to establish marketing and sales capabilities or enter into agreements with third parties to market and sell emricasan, we may not be able to generate product revenues.

We currently do not have a commercial organization for the marketing, sales and distribution of pharmaceutical products. In order to commercialize emricasan, we must build our marketing, sales, distribution, managerial and other non-technical capabilities or make arrangements with third parties to perform these services. We expect that the majority of all ACLF, CLF and HCV-POLT patients will be treated at tertiary care centers and transplant centers and therefore can be addressed with a targeted sales force. We intend to build our own commercial infrastructure in North America and the EU to target these centers, but will evaluate

opportunities to partner with pharmaceutical companies that have established sales and marketing capabilities to commercialize emricasan in ACLF, CLF and HCV-POLT outside of North America and Europe. We may also partner with a pharmaceutical company that has global capabilities to evaluate emricasan in non-orphan indications for which we believe it may also be effective.

The establishment and development of our own sales force or the establishment of a contract sales force to market emricasan will be expensive and time-consuming and could delay any commercial launch. Moreover, we cannot be certain that we will be able to successfully develop this capability. We will have to compete with other pharmaceutical and biotechnology companies to recruit, hire, train and retain marketing and sales personnel. We also face competition in our search for third parties to assist us with the sales and marketing efforts of emricasan. To the extent we rely on third parties to commercialize emricasan, if approved, we may have little or no control over the marketing and sales efforts of such third parties and our revenues from product sales, may be lower than if we had commercialized emricasan ourselves. In the event we are unable to develop our own marketing and sales force or collaborate with a third-party marketing and sales organization, we would not be able to commercialize emricasan.

A variety of risks associated with marketing emricasan internationally could materially adversely affect our business.

We plan to seek regulatory approvalpotential for emricasan outside of the United States and, accordingly, we expect that weachieving profitability will be subjectdiminished and our need to additional risks relatedraise capital to operating in foreign countries if we obtain the necessary approvals, including:

differing regulatory requirements in foreign countries;

the potential for so-called parallel importing, which is what happens when a local seller, faced with high or higher local prices, opts to import goods from a foreign market (with low or lower prices) rather than buying them locally;

unexpected changes in tariffs, trade barriers, price and exchange controls and other regulatory requirements;

economic weakness, including inflation, or political instability in particular foreign economies and markets;

compliance with tax, employment, immigration and labor laws for employees living or traveling abroad;

foreign taxes, including withholding of payroll taxes;

foreign currency fluctuations, which could result in increased operating expenses and reduced revenues, and other obligations incident to doing business in another country;

difficulties staffing and managing foreign operations;

workforce uncertainty in countries where labor unrest is more common than in the United States;

potential liability under the Foreign Corrupt Practices Act of 1977 or comparable foreign regulations;

challenges enforcingfund our contractual and intellectual property rights, especially in those foreign countries that do not respect and protect intellectual property rights to the same extent as the United States;

production shortages resulting from any events affecting raw material supply or manufacturing capabilities abroad; and

business interruptions resulting from geo-political actions, including war and terrorism.

These and other risks associated with our international operations may materially adversely affect our ability to attain or maintain profitable operations.will increase.

If we fail to developretain current members of our senior management and commercialize any other drug candidates,scientific personnel, or to attract and keep additional key personnel, we may be unable to grow our business.

Although we currently have no plans to do so, we may seek to develop and commercialize drug candidates in addition to emricasan, which is currently our only drug candidate. If we decide to pursue the development and commercialization of any additional drug candidates, we may be required to invest significant resources to acquire or in-license the rights to such drug candidates or to conduct drug discovery activities. In addition, any other drug candidates will require additional, time-consuming development efforts prior to commercial sale, including preclinical studies, extensive clinical trials and approval by the FDA and applicable foreign regulatory authorities. All drug candidates are prone to the risks of failure that are inherent in pharmaceutical product development, including the possibility that the drug candidate will not be shown to be sufficiently safe and/or

effective for approval by regulatory authorities. In addition, we cannot assure you that we will be able to acquire, discover or develop any additional drug candidates, or that any additional drug candidates we may develop will be approved, manufactured or produced economically, successfully commercialized or widely accepted in the marketplace or be more effective than other commercially available alternatives. Research programs to identify new drug candidates require substantial technical, financial and human resources whether or not we ultimately identify any candidates. If we are unable to develop or commercialize emricasan or any other drug candidates, our businessproduct candidates.

Our success depends on our continued ability to attract, retain and prospects will suffer.

motivate highly qualified management and scientific personnel. Competition for qualified personnel is intense. We cannotmay not be certain that emricasan or any other drug candidates that we develop will produce commercially viable drugs that safely and effectively treat liver or other diseases. Even if we are successful in completing preclinicalattracting qualified personnel to fulfill our current or future needs and clinicalthere is no guarantee that any of these individuals will join the combined organization on a full-time employment basis, or at all. In the event the combined organization is unable to fill critical open employment positions, we may need to delay our operational activities and goals, including the development of the company’s product candidates, and receiving regulatory approval for one commercially viable drug for the treatment of one disease, we cannot be certain that we will also be able to develop and receive regulatory approval for other drug candidates for the treatment of other forms of that disease or other diseases. If we fail to developmay have difficulty in meeting our obligations as a pipeline of potential drug candidates other than emricasan, we willpublic company. We do not havemaintain “key person” insurance on any prospects for commercially viable drugs should our efforts to develop and commercialize emricasan be unsuccessful, and our business prospects would be harmed significantly.

We face significant competition from other biotechnology and pharmaceutical companies and our operating results will suffer if we fail to compete effectively.

The biopharmaceutical industry is characterized by intense competition and rapid innovation. Although we believe that we hold a leading position in our understanding of caspase inhibition related to liver disease, our competitors may be able to develop other compounds or drugs that are able to achieve similar or better results. Our potential competitors include major multinational pharmaceutical companies, established biotechnology companies, specialty pharmaceutical companies and universities and other research institutions. Many of our competitors have substantially greater financial, technical and other resources, such as larger research and development staff and experienced marketing and manufacturing organizations and well-established sales forces. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large, established companies. Mergers and acquisitions in the biotechnology and pharmaceutical industries may result in even more resources being concentrated in our competitors. Competition may increase further as a result of advances in the commercial applicability of technologies and greater availability of capital for investment in these industries. Our competitors may succeed in developing, acquiring or licensing on an exclusive basis drug products that are more effective or less costly than emricasan. We believe the key competitive factors that will affect the development and commercial success of our product candidates are efficacy, safety and tolerability profile, reliability, convenience of dosing, price and reimbursement.

There are currently no therapeutic products approved for the treatment of ACLF, CLF or HCV-POLT. There are a number of marketed therapeutics used in each of these diseases to try to remove the underlying cause of the disease and prevent further liver injury. For example, if the liver damage is a result of Hepatitis B virus or HCV infection, marketed antiviral medications may be used to treat the virus that led to liver damage. If the liver damage is a result of alcoholic hepatitis, marketed alcohol addiction drugs may be used. If the liver damage is a result of obesity, diet and exercise may be prescribed along with marketed therapeutics. If the liver damage is a result of non-alcoholic steatohepatitis, or NASH, marketed drugs such as insulin sensitizers (e.g., metformin), antihyperlipidemic agents (e.g., gemfibrozil), pentoxifylline and ursodiol may be used, although none of these are approved for NASH. In addition to the marketed drugs for those indications, there are drugs in development for each of these indications. Although these marketed therapies and those in development may be efficacious, all of them take time to show an effect and as long as the underlying conditions persist there will continue to be damage to the liver. Emricasan is the only therapeutic we are aware of that is being developed specifically to reduce the level of apoptosis in the liver and as a result it may be used with these other therapies. Our estimates of disease prevalence consider the presence of these other treatments.employees.

In addition, competitors and others are likely in the HCV landscape is expectedfuture to evolve dramatically overattempt to recruit our employees. The loss of the next five to ten years with the introductionservices of new interferon-free regimens, which are expected to reach the market as soon as 2015, and next generation interferon-free regimens, which may reach the market by as early as 2016, with greater efficacy and tolerability over the current antiviral therapies. Based on market research we commissioned, we estimate that

treatment rates pre-transplantation would need to be 100% and cure rates would have to exceed 97% before the supply of liver transplants would outstrip the need for transplant on an annual basis.

Even if we obtain regulatory approval for emricasan, the availability and priceany of our competitors’ products could limitkey personnel, the demand, and the price we are able to charge, for emricasan. We will not achieve our business plan if the acceptance of emricasan is inhibited by price competition or the reluctance of physicians to switch from existing methods of treatment to emricasan, or if physicians switch to other new drug products or choose to reserve emricasan for use in limited circumstances. Our inability to compete with existingattract or subsequently introduced drug products would have a material adverse impact onretain highly qualified personnel in the future or delays in hiring such personnel, particularly senior management and other technical personnel, could materially and adversely affect our business, prospects, financial condition and results of operations. In addition, the replacement of key personnel likely would involve significant time and costs, and may significantly delay or prevent the achievement of our business objectives.

Established pharmaceutical

From time to time, our management seeks the advice and guidance of certain scientific advisors and consultants regarding clinical and regulatory development programs and other customary matters. These scientific advisors and consultants are not our employees and may have commitments to, or consulting or advisory contracts with, other entities that may limit their availability to us. In addition, our scientific advisors may have arrangements with other companies to assist those companies in developing products or technologies that may invest heavilycompete with ours.

We will need to accelerate discoveryincrease the size of our organization and may not successfully manage our growth.

We are a clinical-stage biopharmaceutical company with a small number of employees, and our management systems currently in place are not likely to be adequate to support our future growth plans. Our ability to grow and to manage our growth effectively will require us to hire, train, retain, manage and motivate additional employees and to implement and improve our operational, financial and management systems. These demands also may require the hiring of additional senior management personnel or the development of novel compounds oradditional expertise by our senior management personnel. Hiring a significant number of additional employees, particularly those at the management level, would increase our expenses significantly. Moreover, if we fail to in-license novel compounds thatexpand and enhance our operational, financial and management systems in conjunction with our potential future growth, it could make emricasan less competitive. In addition, any new product that competes with an approved product must demonstrate compelling advantages in efficacy, convenience, tolerability and safety in order to overcome price competition and to be commercially successful. Accordingly, our competitors may succeed in obtaining patent protection, receiving FDA approval or discovering, developing and commercializing medicines before we do, which would have a material adverse impacteffect on our business.

We may not be able to obtain orphan drug exclusivity for emricasan for any indication.

In the United States, under the Orphan Drug Act, the FDA may grant orphan designation to a drug or biological product intended to treat a rare disease or condition. Such diseases and conditions are those that affect fewer than 200,000 individuals in the United States, or if they affect more than 200,000 individuals in the United States, there is no reasonable expectation that the cost of developing and making a drug product available in the United States for these types of diseases or conditions will be recovered from sales of the product. Orphan product designation must be requested before submitting an NDA. If the FDA grants orphan product designation, the identity of the therapeutic agent and its potential orphan use are disclosed publicly by that agency. Orphan product designation does not convey any advantage in or shorten the duration of the regulatory review and approval process, but it can lead to financial incentives, such as opportunities for grant funding toward clinical trial costs, tax advantages and user-fee waivers.

If a product that has orphan designation subsequently receives the first FDA approval for the disease or condition for which it has such designation, the product is entitled to orphan drug marketing exclusivity for a period of seven years. Orphan drug marketing exclusivity generally prevents the FDA from approving another application, including a full NDA, to market the same drug or biological product for the same indication for seven years, except in limited circumstances, including if the FDA concludes that the later drug is safer, more effective or makes a major contribution to patient care. For purposes of small molecule drugs, the FDA defines “same drug” as a drug that contains the same active chemical entity and is intended for the same use as the drug in question. A designated orphan drug may not receive orphan drug marketing exclusivity if it is approved for a use that is broader than the indication for which it received orphan designation. Orphan drug marketing exclusivity rights in the United States may be lost if the FDA later determines that the request for designation was materially defective or if the manufacturer is unable to assure sufficient quantity of the drug to meet the needs of patients with the rare disease or condition.

The criteria for designating an orphan medicinal product in the EU are similar in principle to those in the United States. Under Article 3 of Regulation (EC) 141/2000, a medicinal product may be designated as orphan if (1) it is intended for the diagnosis, prevention or treatment of a life-threatening or chronically debilitating condition; (2) either (a) such condition affects no more than five in 10,000 persons in the EU when the application is made, or (b) the product, without the benefits derived from orphan status, would not generate sufficient return in the EU to justify investment; and (3) there exists no satisfactory method of diagnosis, prevention or treatment of such condition authorized for marketing in the EU, or if such a method exists, the product will be of significant benefit to those affected by the condition, as defined in Regulation (EC) 847/2000. Orphan medicinal products are eligible for financial incentives such as reduction of fees or fee waivers and are, upon grant of a marketing authorization, entitled to ten years of market exclusivity for the approved therapeutic

indication. The application for orphan designation must be submitted before the application for marketing authorization. The applicant will receive a fee reduction for the marketing authorization application if the orphan designation has been granted, but not if the designation is still pending at the time the marketing authorization is submitted. Orphan designation does not convey any advantage in, or shorten the duration of, the regulatory review and approval process.

The ten-year market exclusivity in the EU may be reduced to six years if, at the end of the fifth year, it is established that the product no longer meets the criteria for orphan designation, for example, if the product is sufficiently profitable not to justify maintenance of market exclusivity. Additionally, marketing authorization may be granted to a similar product for the same indication at any time if:

the second applicant can establish that its product, although similar, is safer, more effective or otherwise clinically superior;

the applicant consents to a second orphan medicinal product application; or

the applicant cannot supply enough orphan medicinal product.

We have applied for orphan drug designation for emricasan for the treatment of HCV-POLT in the United States and the EU, but we have not yet received responses from the regulatory bodies in those jurisdictions. We plan to submit applications for orphan drug designations for ACLF in the United States and the EU in the second half of 2013. We cannot assure you that we will be able to obtain orphan drug exclusivity for emricasan in any jurisdiction for the target indications in a timely manner or at all, or that a competitor will not obtain orphan drug exclusivity that could block the regulatory approval of emricasan for several years. If we are unable to obtain orphan drug designation in the United States or the EU, we will not receive market exclusivity which might affect our ability to generate sufficient revenues. If a competitor is able to obtain orphan exclusivity that would block emricasan’s regulatory approval, our ability to generate revenues would be significantly reduced which would harm our business, prospects, financial condition and results of operations.

We may form or seek strategic alliances in the future, and we may not realize the benefits of such alliances.

We may form or seek strategic alliances, create joint ventures or collaborations or enter into licensing arrangements with third parties that we believe will complement or augment our development and commercialization efforts with respect to emricasan and any future product candidates that we may develop. Any of these relationships may require us to incur non-recurring and other charges, increase our near- and long-term expenditures, issue securities that dilute our existing stockholders or disrupt our management and business. In addition, we face significant competition in seeking appropriate strategic partners and the negotiation process is time-consuming and complex. Moreover, we may not be successful in our efforts to establish a strategic partnership or other alternative arrangements for emricasan because it may be deemed to be at too early of a stage of development for collaborative effort and third parties may not view emricasan as having the requisite potential to demonstrate safety and efficacy. If we license products or businesses, we may not be able to realize the benefit of such transactions if we are unable to successfully integrate them with our existing operations and company culture. We cannot be certain that, following a strategic transaction or license, we will achieve the revenues or specific net income that justifies such transaction. Any delays in entering into new strategic partnership agreements related to emricasan could delay the development and commercialization of emricasan in certain geographies for certain indications, which would harm our business prospects, financial condition and results of operations.

We are highly dependent on our key personnel,exposed to product liability, non-clinical and if we are not successful in attracting and retaining highly qualified personnel, we may notclinical liability risks, which could place a substantial financial burden upon us, should lawsuits be able to successfully implement our business strategy.filed against us.

Our abilitybusiness exposes us to competepotential product liability and other liability risks that are inherent in the highly competitive biotechnologytesting, manufacturing and pharmaceuticals industries depends uponmarketing of pharmaceutical formulations and products. In addition, the use in our clinical trials of pharmaceutical products and the subsequent sale of these products by us or our potential licensees may cause us to bear a portion of or all product liability risks. A successful liability claim or series of claims brought against us could have a material adverse effect on our business, financial condition and results of operations.

Our research and development activities involve the use of hazardous materials, which subject us to regulation, related costs and delays and potential liabilities.

Our research and development activities involve the controlled use of hazardous materials, chemicals and various radioactive compounds. If an accident occurs, we could be held liable for resulting damages, which could be substantial. We are also subject to numerous environmental, health and workplace safety laws and regulations, including those governing laboratory procedures, exposure to blood-borne pathogens and the handling of biohazardous materials. Additional federal, state and local laws and regulations affecting our operations may be adopted in the future. We may incur substantial costs to comply with, and substantial fines or penalties if we violate any of these laws or regulations.

We rely significantly on information technology and any failure, inadequacy, interruption or security lapse of that technology, including any cybersecurity incidents, could harm our ability to attract and retain highly qualified managerial, scientific and medical personnel. We are highly dependent on our management, scientific and medical personnel, including our President and Chief Executive Officer, Steven J. Mento, Ph.D., our Senior Vice President, R&D, and Chief Scientific Officer, Alfred P. Spada, Ph.D., and our Senior Vice President, Clinical Research, and Chief Medical Officer, Gary C. Burgess, M.B., Ch.B. M.Med. The loss of the services of any of our executive officers or other key employees and our inability to find suitable replacements could potentially harmoperate our business prospects, financial condition or results of operations.

Our scientific team has expertise in many different aspects of drug discovery and development. We conduct our operations at our facility in San Diego, California. This region is headquarters to many other biopharmaceutical companies and many academic and research institutions. Competition for skilled personnel in our market is very intense and may limit our ability to hire and retain highly qualified personnel on acceptable terms. In order to induce valuable employees to remain at Conatus, in addition to salary and cash incentives, we have provided stock options that vest over time. The value to employees of stock options that vest over time may be significantly affected by movements in our stock price that are beyond our control, and may at any time be insufficient to counteract more lucrative offers from other companies.

Despite our efforts to retain valuable employees, members of our management, scientific and development teams may terminate their employment with us on short notice. Although we have employment agreements with our key employees, these employment agreements provide for at-will employment, which means that any of our employees could leave our employment at any time, with or without notice. We do not maintain “key man” insurance policies on the lives of these individuals or the lives of any of our other employees. Our success also depends on our ability to continue to attract, retain and motivate highly skilled junior, mid-level, and senior managers as well as junior, mid-level, and senior scientific and medical personnel.

Many of the other biotechnology and pharmaceutical companies that we compete against for qualified personnel have greater financial and other resources, different risk profiles and a longer history in the industry than we do. They may also provide more diverse opportunities and better chances for career advancement. Some of these characteristics may be more appealing to high quality candidates than what we can offer. If we are unable to continue to attract and retain high quality personnel, our ability to advance the development of emricasan and obtain regulatory approval and potentially commercialize this drug candidate will be limited.

We will need to grow the size of our organization, and we may experience difficulties in managing this growth.

As of May 31, 2013, we had 15 employees, 13 of whom are full-time. As our development and commercialization plans and strategies develop, and as we transition into operating as a public company, we expect to need additional managerial, operational, sales, marketing, financial and other personnel. Future growth would impose significant added responsibilities on members of management, including:

identifying, recruiting, integrating, maintaining and motivating additional employees;

managing our internal development efforts effectively, including the clinical and FDA review process for emricasan, while complying with our contractual obligations to contractors and other third parties; and

improving our operational, financial and management controls, reporting systems and procedures.

Our future financial performance and our ability to commercialize emricasan will depend, in part, on our ability to effectively manage any future growth, and our management may also have to divert a disproportionate amount of its attention away from day-to-day activities in order to devote a substantial amount of time to managing these growth activities. To date, we have used the services of outside vendors to perform tasks including clinical trial management, statistics and analysis, regulatory affairs, formulation development and other drug development functions. Our growth strategy may also entail expanding our group of contractors or consultants to implement these tasks going forward. Because we rely on numerous consultants, effectively outsourcing many key functions of our business, we will need to be able to effectively manage these consultants to ensure that they successfully carry out their contractual obligations and meet expected deadlines. However, if we are unable to effectively manage our outsourced activities or if the quality or accuracy of the services provided by consultants is compromised for any reason, our clinical trials may be extended, delayed or terminated, and we may not be able to obtain regulatory approval for emricasan or otherwise advance our business. There can be no assurance that we will be able to manage our existing consultants or find other competent outside contractors and consultants on economically reasonable terms, or at all. If we are not able to effectively expand our organization by hiring new employees and expanding our groups of consultants and contractors, we may not be able to successfully implement the tasks necessary to further develop and commercialize emricasan that we develop and, accordingly, may not achieve our research, development and commercialization goals.

Our business and operations would suffer in the event of system failures.effectively.

Despite the implementation of security measures, our internal computer systems and those of our current and future CROs and other contractors and consultantsthird parties with which we contract are vulnerable to damage from cyber-attacks, computer viruses, unauthorized access, natural disasters, terrorism, war and telecommunication and electrical failures. While we have not experienced any such material system failure, accidentSystem failures, accidents or security breach to date, if such an event were to occur andbreaches could cause interruptions in our operations, itand could result in a material disruption of our drug development programs and ourclinical activities and business operations. For example, theoperations, in addition to possibly requiring substantial expenditures of resources to remedy. The loss of drug development or clinical trial data from completed or future clinical trials could result in delays in our regulatory approval efforts and

significantly increase our costs to recover or reproduce the data. Likewise, we rely on third parties to manufacture emricasan and conduct clinical trials, and similar events relating to their computer systems could also have a material adverse effect on our business. To the extent that any disruption or security breach were to result in a loss of, or damage to, our data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur liability and our development programs and the further development and commercialization of emricasanour product candidates could be delayed.

Business disruptions could seriously harm our future revenuesOur employees and financial condition and increase our costs and expenses.

Our operations could be subject to earthquakes, power shortages, telecommunications failures, water shortages, floods, hurricanes, typhoons, fires, extreme weather conditions, medical epidemics and other natural or manmade disasters or business interruptions, for which we are predominantly self-insured. The occurrence of any of these business disruptions could seriously harm our operations and financial condition and increase our costs and expenses. We rely on third-party manufacturers to produce emricasan. Our ability to obtain clinical supplies of emricasan could be disrupted if the operations of these suppliers are affected by a man-made or natural disaster or other business interruption. Our corporate headquarters is located in California near major earthquake faults and fire zones. The ultimate impact on us, our significant suppliers and our general infrastructure of being located near major earthquake faults and fire zones and being consolidated in certain geographical areas is unknown, but our operations and financial condition could suffer in the event of a major earthquake, fire or other natural disaster.

Our employeesconsultants may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements.

We are exposed to the risk of employee or consultant fraud or other misconduct. Misconduct by our employees or consultants could include intentional failures to comply with FDA regulations, to provide accurate information to the FDA, to comply with manufacturing standards, we have established, to comply with federal and state healthcare fraud and abuse laws and regulations, to report financial information or data accurately or to disclose unauthorized activities to us. In particular, sales, marketing and business arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent fraud, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission,commissions, customer incentive programs and other business arrangements. Employee and consultant misconduct also could also involve the improper use of information obtained in the course of clinical trials, which could result in regulatory sanctions and serious harm to our reputation. Effective upon completion of this offering, we will adopt a code of business conduct and ethics, but itIt is not always possible to identify and deter employeesuch misconduct, and the precautions we take to detect and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to be in compliance with such laws or regulations. If any such actions are instituted against us, and we are not successful in defending ourselvesitself or asserting our rights, those actions could have a significant impactmaterial adverse effect on our business, includingfinancial condition and results of operations, and result in the imposition of significant fines or other sanctions.sanctions against us.

If emricasan is approved, weBusiness disruptions such as natural disasters could seriously harm our future revenues and financial condition and increase our costs and expenses.

We and our suppliers may be subjectexperience a disruption in their business as a result of natural disasters. A significant natural disaster, such as an earthquake, hurricane, flood or fire, could severely damage or destroy our headquarters or facilities or the facilities of our manufacturers or suppliers, which could have a material and adverse effect on our business, financial condition and results of operations. In addition, terrorist acts or acts of war targeted at the U.S., could cause damage or disruption to healthcare laws, regulationus, our employees, facilities, partners and enforcement. Our failure to comply with those lawssuppliers, which could have a material adverse effect on our business, financial condition and results of operationsoperations.

We may engage in strategic transactions that could impact our liquidity, increase our expenses and financial conditions.present significant distractions to our management.

Although we currently do not have any products on the market, if emricasan is approved, once we begin commercializing emricasan,From time to time, we may be subject to additional healthcare regulationconsider strategic transactions, such as acquisitions of companies, asset purchases and enforcement by the

federal government and by authorities in the states and foreign jurisdictions in which we conduct our business. Such laws include, without limitation, state and federal anti-kickback, false claims, privacy and security and physician sunshine laws and regulations. If our operations are found to be in violationout-licensing or in-licensing of any of such lawsproducts, product candidates or any other governmental regulationstechnologies. Additional potential transactions that apply to us, we may be subjectconsider include a variety of different business arrangements, including spin-offs, strategic partnerships, joint ventures, restructurings, divestitures, business combinations and investments. Any such transaction may require us to penalties, including civilincur non-recurring or other charges, may increase our near- and criminal penalties, damages, fines, the curtailmentlong-term expenditures and may pose significant integration challenges or restructuring ofdisrupt our operations, the exclusion from participation in federal and state healthcare programs and imprisonment, any ofmanagement or business, which could adversely affect our business, financial condition and results of operations. For example, these transactions may entail numerous operational and financial risks, including:

exposure to unknown liabilities;

disruption of our business and diversion of our management’s time and attention in order to develop acquired products, product candidates or technologies;

incurrence of substantial debt or dilutive issuances of equity securities to pay for any of these transactions;

higher-than-expected transaction and integration costs;

write-downs of assets or goodwill or impairment charges;

increased amortization expenses;

difficulty and cost in combining the operations and personnel of any acquired businesses or product lines with our operations and personnel;

impairment of relationships with key suppliers or customers of any acquired businesses or product lines due to changes in management and ownership; and

inability to retain key employees of any acquired businesses.

Accordingly, although there can be no assurance that we will undertake or successfully complete any transactions of the nature described above, any transactions that we do complete may be subject to the foregoing or other risks, and could have a material adverse effect on our business, financial condition and results of operations.

Risks Relating to Our Intellectual Property

We may not be successful in obtaining or maintaining necessary rights to our product candidates through acquisitions and in-licenses.

One of our programs may require the use of proprietary rights held by third parties. We may need to acquire or in-license additional intellectual property in the future with respect to other product candidates. Moreover, we may be unable to acquire or in-license any compositions, methods of use, processes or other intellectual property rights from third parties that we identify as necessary for our product candidates. We face competition with regard to acquiring and in-licensing third-party intellectual property rights, including from a number of more established companies. These established companies may have a competitive advantage over us due to their size, cash resources and greater clinical development and commercialization capabilities. In addition, companies that perceive us to be a competitor may be unwilling to assign or license intellectual property rights to us. We also may be unable to acquire or in-license third-party intellectual property rights on terms that would allow us to make an appropriate return on our investment.

We may enter into license agreements with U.S. and foreign academic institutions to accelerate development of our current or future preclinical product candidates. Typically, these agreements include an option for the company to negotiate a license to the institution’s resulting intellectual property rights. Even with such an option, we may be unable to negotiate a license within the specified timeframe or under terms that are acceptable to us. If we are unable to license rights from the institution, the institution may offer the intellectual property rights to other parties, potentially blocking our ability to pursue our desired program.

If we are unable to successfully obtain required third-party intellectual property rights or maintain our existing intellectual property rights, we may need to abandon development of the related program and our business, financial condition and results of operations could be materially and adversely affected.

We may not be able to protect our proprietary or licensed technology in the marketplace.

We depend on our ability to protect our proprietary or licensed technology. We rely on trade secret, patent, copyright and trademark laws, and confidentiality, licensing and other agreements with

employees and third parties, all of which offer only limited protection. Our success depends in large part on our ability and any licensor’s or licensee’s ability to obtain and maintain patent protection in the U.S. and other countries with respect to our proprietary or licensed technology and products. We currently in-license some of our intellectual property rights to develop our product candidates and may in-license additional intellectual property rights in the future. We cannot be certain that patent enforcement activities by our current or future licensors have been or will be conducted in compliance with applicable laws and regulations or will result in valid and enforceable patents or other intellectual property rights. We also cannot be certain that our current or future licensors will allocate sufficient resources or prioritize their or our enforcement of such patents. Even if we are not a party to these legal actions, an adverse outcome could prevent us from continuing to license intellectual property that we may need to operate our business, which would have a material adverse effect on our business, financial condition and results of operations.

We believe we will be able to obtain, through prosecution of patent applications covering our owned technology and technology licensed from others, adequate patent protection for our proprietary drug technology, including those related to our in-licensed intellectual property. If we are compelled to spend significant time and money protecting or enforcing our licensed patents and future patents we may own, designing around patents held by others or licensing or acquiring, potentially for large fees, patents or other proprietary rights held by others, our business, financial condition and results of operations may be materially and adversely affected. If we are unable to effectively protect the intellectual property that we own or in-license, other companies may be able to offer the same or similar products for sale, which could materially adversely affect our business, financial condition and results of operations. The patents of others from whom we may license technology, and any future patents we may own, may be challenged, narrowed, invalidated or circumvented, which could limit our ability to stop competitors from marketing the same or similar products or limit the length of term of patent protection that we may have for our products.

Obtaining and maintaining patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our financial results.patent protection for licensed patents, pending patent applications and potential future patent applications and patents could be reduced or eliminated for non-compliance with these requirements.

Periodic maintenance fees, renewal fees, annuity fees and various other governmental fees on patents and/or patent applications will be due to be paid to the U.S. Patent and Trademark Office (“USPTO”) and various governmental patent agencies outside of the U.S. in several stages over the lifetime of the applicable patent and/or patent application. The USPTO and various non-U.S. governmental patent agencies require compliance with a number of procedural, documentary, fee payment and other similar provisions during the patent application process. In many cases, an inadvertent lapse can be cured by payment of a late fee or by other means in accordance with the applicable rules. However, there are situations in which noncompliance can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. If product liability lawsuits are brought against us,this occurs with respect to our in-licensed patents or patent applications we may incur substantial liabilitiesfile in the future, our competitors might be able to use our technologies, which would have a material adverse effect on our business, financial condition and results of operations.

The patent positions of pharmaceutical products are often complex and uncertain. The breadth of claims allowed in pharmaceutical patents in the U.S. and many jurisdictions outside of the U.S. is not consistent. For example, in many jurisdictions, the support standards for pharmaceutical patents are becoming increasingly strict. Some countries prohibit method of treatment claims in patents. Changes in either the patent laws or interpretations of patent laws in the U.S. and other countries may diminish the value of our licensed or owned intellectual property or create uncertainty. In addition, publication of

information related to our current product candidates and potential products may prevent us from obtaining or enforcing patents relating to these product candidates and potential products, including without limitation composition-of-matter patents, which are generally believed to offer the strongest patent protection.

Patents that we currently license and patents that we may own or license in the future do not necessarily ensure the protection of our licensed or owned intellectual property for a number of reasons, including, without limitation, the following:

the patents may not be broad or strong enough to prevent competition from other products that are identical or similar to our product candidates;

there can be no assurance that the term of a patent can be extended under the provisions of patent term extensions afforded by U.S. law or similar provisions in foreign countries, where available;

the issued patents and patents that we may obtain or license in the future may not prevent generic entry into the market for our product candidates;

we, or third parties from whom we in-license or may license patents, may be required to limit commercialization of emricasan.

We face an inherent risk of product liability as a resultdisclaim part of the term of one or more patents;

there may be prior art of which we are aware, which we do not believe affects the validity or enforceability of a patent claim, but which, nonetheless, ultimately may be found to affect the validity or enforceability of a patent claim;

there may be other patents issued to others that will affect our freedom to operate;

if the patents are challenged, a court could determine that they are invalid or unenforceable;

there might be a significant change in the law that governs patentability, validity and infringement of our licensed patents or any future patents we may own that adversely affects the scope of our patent rights;

a court could determine that a competitor’s technology or product does not infringe our licensed patents or any future patents we may own; and

the patents could irretrievably lapse due to failure to pay fees or otherwise comply with regulations or could be subject to compulsory licensing. If we encounter delays in our development or clinical testingtrials, the period of emricasantime during which we could market our potential products under patent protection would be reduced.

Our competitors may be able to circumvent our licensed patents or future patents we may own by developing similar or alternative technologies or products in a non-infringing manner. Our competitors may seek to market generic versions of any approved products by submitting abbreviated new drug applications to the FDA in which our competitors claim that our licensed patents or any future patents we may own are invalid, unenforceable or not infringed. Alternatively, our competitors may seek approval to market their own products similar to or otherwise competitive with our products. In these circumstances, we may need to defend or assert our licensed patents or any future patents we may own, including by filing lawsuits alleging patent infringement. In any of these types of proceedings, a court or other agency with jurisdiction may find our licensed patents or any future patents we may own invalid or unenforceable. We may also fail to identify patentable aspects of our research and will face an even greater riskdevelopment before it is too late to obtain patent protection. Even if we commercializeown or in-license valid and enforceable patents, these patents still may not provide protection against competing products or processes sufficient to achieve our business objectives.

The issuance of a patent is not conclusive as to our inventorship, scope, ownership, priority, validity or enforceability. In this regard, third parties may challenge our licensed patents or any products. For example,future patents we may be sued if emricasan allegedly causes injury or is found to be otherwise unsuitable during clinical testing, manufacturing, marketing or sale. Any such product liability claims may include allegations of defects in manufacturing, defects in design, a failure to warn of dangers inherentown in the product, negligence, strict liability,courts or patent offices in the U.S. and a breach of warranties. Claims could also be asserted under state consumer protection acts. If we cannot successfully defend ourselves against product liability claims, we may incur substantial liabilities or be required to limit commercialization of emricasan. Even successful defense would require significant financial and management resources. Regardless of the merits or eventual outcome, liability claimsabroad. Such challenges may result in:

decreased demand for emricasan;

injury to our reputation;

withdrawal of clinical trial participants;

initiation of investigations by regulators;

costs to defend the related litigation;

a diversion of management’s time and our resources;

substantial monetary awards to trial participants or patients;

product recalls, withdrawals or labeling, marketing or promotional restrictions;

in loss of revenue;

exhaustion of any available insurance and our capital resources;

the inabilityexclusivity or freedom to commercialize emricasan; and

a declineoperate or in our share price.

Our inability to obtain and retain sufficient product liability insurance at an acceptable cost to protect against potential product liabilitypatent claims could preventbeing narrowed, invalidated or inhibit the commercialization of products we develop. We currently carry $5.0 million of product liability insurance covering our clinical trials. Although we maintain such insurance, any claim that may be brought against us could result in a court judgment or settlement in an amount that is not covered,held unenforceable, in whole or in part, bywhich could limit our insuranceability to stop others from using or that is in excesscommercializing similar or identical technology and products, or limit the duration of the limitspatent protection of our insurance coverage. If we determine that it is prudent to increase ourtechnology and potential products. In addition, given the amount of time required for the development, testing and regulatory review of new product liability coverage due to the commercial launch of any approvedcandidates, patents protecting such product we may be unable to obtaincandidates might expire before or shortly after such increased coverage on acceptable terms, or at all. Our insurance policies also have various exclusions, and we may be subject to a product liability claim for which we have no coverage. We will have to pay any amounts awarded by a court or negotiated in a settlement that exceed our coverage limitations or thatcandidates are not covered by our insurance, and we may not have, or be able to obtain, sufficient capital to pay such amounts.

Risks Related to Our Reliance On Third Partiescommercialized.

We relymay infringe the intellectual property rights of others, which may prevent or delay our drug development efforts and prevent us from commercializing or increase the costs of commercializing our products, if approved.

Our commercial success depends significantly on our ability to operate without infringing the patents and other intellectual property rights of third parties to conductparties. For example, there could be issued patents of which we are not aware that our clinical trials. If these third partiescurrent or potential future product candidates infringe. There also could be patents that we believe we do not successfully carry out their contractual duties or meet expected deadlines,infringe, but that we may notultimately be ablefound to obtain regulatory approvalinfringe.

Moreover, patent applications are in some cases maintained in secrecy until patents are issued. The publication of discoveries in the scientific or patent literature frequently occurs substantially later than the date on which the underlying discoveries were made and patent applications were filed. Because patents can take many years to issue, there may be currently pending applications of which we are unaware that may later result in issued patents that our product candidates or potential products infringe. For example, pending applications may exist that claim or can be amended to claim subject matter that our product candidates or potential products infringe. Competitors may file continuing patent applications claiming priority to already issued patents in the form of continuation, divisional, or continuation-in-part applications, in order to maintain the pendency of a patent family and attempt to cover our product candidates.

Third parties may assert that we are employing their proprietary technology without authorization and may sue us for patent or commercialize emricasanother intellectual property infringement. These lawsuits are costly and could adversely affect our business, could be substantially harmed.

We anticipate that we will engage one or more third-party CROs in connection with our planned Phase 2financial condition and Phase 3 clinical trials for emricasan. We will rely heavily on these parties for executionresults of our clinical trials,operations and we will control only certain aspectsdivert the attention of their activities. Nevertheless,managerial and scientific personnel. If we are responsiblesued for ensuringpatent infringement, we would need to demonstrate that each of

our studies is conducted in accordance with applicable protocol, legal, regulatory and scientific standards, and our reliance on our CROs does not relieve us of our regulatory responsibilities. We and our CROs are required to comply with cGCPs, which are regulations and guidelines enforced by the FDA and comparable foreign regulatory authorities for drugproduct candidates, in clinical development. Regulatory authorities enforce these cGCPs through periodic inspections of trial sponsors, principal investigators and trial sites. If wepotential products or any of these CROs fail to comply with applicable cGCP regulations, the clinical data generated in our clinical trials may be deemed unreliable and the FDA or comparable foreign regulatory authorities may require us to perform additional clinical trials before approving our marketing applications. We cannot assure you that, upon inspection, such regulatory authorities will determine that any of our clinical trials comply with the cGCP regulations. In addition, our clinical trials must be conducted with drug product produced under cGMP regulations and will require a large number of test subjects. Our failure or any failure by our CROs to comply with these regulations or to recruit a sufficient number of patients may require us to repeat clinical trials, which would delay the regulatory approval process. Moreover, our business may be implicated if any of our CROs violates federal or state fraud and abuse or false claims laws and regulations or healthcare privacy and security laws.

Our CROs are not our employees and, except for remedies available to us under our agreements with such CROs, we cannot control whether or not they devote sufficient time and resources to our ongoing preclinical, clinical and nonclinical programs. These CROs may also have relationships with other commercial entities, including our competitors, for whom they may also be conducting clinical studies or other drug development activities, which could affect their performance on our behalf. If CROsmethods either do not successfully carry out their contractual duties or obligations or meet expected deadlines, if they need to be replaced or ifinfringe the quality or accuracyclaims of the clinical data they obtain is compromised due torelevant patent or that the failure to adhere to our clinical protocols or regulatory requirements or for other reasons, our clinical trials may be extended, delayed or terminatedpatent claims are invalid, and we may not be able to completedo this. Proving invalidity is difficult. For example, in the U.S., proving invalidity requires a showing of clear and convincing evidence to overcome the presumption of validity enjoyed by issued patents. Even if we are successful in these proceedings, we may incur substantial costs and the time and attention of our management and scientific personnel could be diverted in pursuing these proceedings, which could have a material adverse effect on us. In addition, we may not have sufficient resources to bring these actions to a successful conclusion. If a court holds that any third-party patents are valid, enforceable and cover our products or their use, the holders of any of these patents may be able to block our ability to commercialize our products unless we acquire or obtains a license under the applicable patents or until the patents expire.

We may not be able to enter into licensing arrangements or make other arrangements at a reasonable cost or on reasonable terms. Any inability to secure licenses or alternative technology could result in delays in the introduction of our products or lead to prohibition of the manufacture or sale of products by us. Even if we are able to obtain a license, it may be non-exclusive, thereby giving our competitors access to the same technologies licensed to us. We could be forced, including by court

order, to cease commercializing the infringing technology or product. In addition, in any such proceeding or litigation, we could be found liable for monetary damages, including treble damages and attorneys’ fees, if we are found to have willfully infringed a patent. A finding of infringement could prevent us from commercializing our product candidates or force us to cease some of our business operations, which could materially and adversely affect our business, financial condition and results of operations. Any claims by third parties that we have misappropriated their confidential information or trade secrets could have a similar material and adverse effect on our business, financial condition and results of operations. In addition, any uncertainties resulting from the initiation and continuation of any litigation could have a material adverse effect on our ability to raise the funds necessary to continue our operations.

Any claims or lawsuits relating to infringement of intellectual property rights brought by or against us will be costly and time consuming and may adversely affect our business, financial condition and results of operations.

We may be required to initiate litigation to enforce or defend our licensed and owned intellectual property. Lawsuits to protect our intellectual property rights can be very time consuming and costly. There is a substantial amount of litigation involving patent and other intellectual property rights in the biopharmaceutical industry generally. Such litigation or proceedings could substantially increase our operating expenses and reduce the resources available for development activities or any future sales, marketing or distribution activities.

In any infringement litigation, any award of monetary damages we receive may not be commercially valuable. Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential information could be compromised by disclosure during litigation. Moreover, there can be no assurance that we will have sufficient financial or other resources to file and pursue such infringement claims, which typically last for years before they are resolved. Further, any claims we assert against a perceived infringer could provoke these parties to assert counterclaims against us alleging that we have infringed their patents. Some of our competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can because of their greater financial resources. Uncertainties resulting from the initiation and continuation of patent litigation or other proceedings could have a material adverse effect on our ability to develop our product candidates.

In addition, our licensed patents and patent applications, and patents and patent applications that we may apply for, own or license in the future, could face other challenges, such as interference proceedings, opposition proceedings, re-examination proceedings and other forms of post-grant review. Any of these challenges, if successful, could result in the invalidation of, or in a narrowing of the scope of, any of our licensed patents and patent applications and patents and patent applications that we may apply for, own or license in the future subject to challenge. Any of these challenges, regardless of their success, would likely be time consuming and expensive to defend and resolve and would divert our management and scientific personnel’s time and attention.

Changes in U.S. patent law could diminish the value of patents in general, thereby impairing our ability to protect our products.

As is the case with other biopharmaceutical companies, our success is heavily dependent on intellectual property, particularly patents. Obtaining and enforcing patents in the biopharmaceutical industry involves both technological and legal complexity and is costly, time-consuming and inherently uncertain. For example, the U.S. previously enacted and is currently implementing wide-ranging patent reform legislation. Specifically, on September 16, 2011, the Leahy-Smith America Invents Act (the “Leahy-Smith Act”) was signed into law and included a number of significant changes to U.S. patent law, and many of the provisions became effective in March 2013. However, it may take the courts

years to interpret the provisions of the Leahy-Smith Act, and the implementation of the statute could increase the uncertainties and costs surrounding the prosecution of our licensed and future patent applications and the enforcement or defense of our licensed and future patents, all of which could have a material adverse effect on our business, financial condition and results of operations.

In addition, the U.S. Supreme Court has ruled on several patent cases in recent years, either narrowing the scope of patent protection available in certain circumstances or weakening the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events has created uncertainty with respect to the value of patents, once obtained. Depending on decisions by the U.S. Congress, the federal courts and the USPTO, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce patents that we might obtain in the future.

We may not be able to protect our intellectual property rights throughout the world.

Filing, prosecuting and defending patents on product candidates throughout the world would be prohibitively expensive. Competitors may use our licensed and owned technologies in jurisdictions where we has not licensed or obtained patent protection to develop their own products and, further, may export otherwise infringing products to territories where we may obtain or license patent protection, but where patent enforcement is not as strong as that in the U.S. These products may compete with our products in jurisdictions where we do not have any issued or licensed patents and any future patent claims or other intellectual property rights may not be effective or sufficient to prevent them from so competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents and other intellectual property protection, particularly those relating to biopharmaceuticals, which could make it difficult for us to stop the infringement of our licensed patents and future patents we may own, or marketing of competing products in violation of our proprietary rights generally. Further, the laws of some foreign countries do not protect proprietary rights to the same extent or in the same manner as the laws of the U.S. As a result, we may encounter significant problems in protecting and defending our licensed and owned intellectual property both in the U.S. and abroad. For example, China currently affords less protection to a company’s intellectual property than some other jurisdictions. As such, the lack of strong patent and other intellectual property protection in China may significantly increase our vulnerability regarding unauthorized disclosure or use of our intellectual property and undermine our competitive position. Proceedings to enforce our future patent rights, if any, in foreign jurisdictions could result in substantial cost and divert our efforts and attention from other aspects of our business.

We may be unable to adequately prevent disclosure of trade secrets and other proprietary information.

In order to protect our proprietary and licensed technology and processes, we rely in part on confidentiality agreements with our corporate partners, employees, consultants, manufacturers, outside scientific advisors and sponsored researchers and other advisors. These agreements may not effectively prevent disclosure of our confidential information and may not provide an adequate remedy in the event of unauthorized disclosure of confidential information. In addition, others may independently discover our trade secrets and proprietary information. Failure to obtain or maintain trade secret protection could adversely affect our competitive business position.

We may be subject to claims that our employees, consultants or independent contractors have wrongfully used or disclosed confidential information of third parties.

We employ individuals who were previously employed at other biopharmaceutical companies. Although we have no knowledge of any such claims against us, we may be subject to claims that we or our employees, consultants or independent contractors have inadvertently or otherwise used or disclosed confidential information of our employees’ former employers or other third parties. Litigation may be necessary to defend against these claims. There is no guarantee of success in defending these claims, and even if we are successful, litigation could result in substantial cost and be a distraction to our management and other employees. To date, none of our employees have been subject to such claims.

We may be subject to claims challenging the inventorship of our licensed patents, any future patents we may own and other intellectual property.

Although we are not currently experiencing any claims challenging the inventorship of our licensed patents or our licensed or owned intellectual property, we may in the future be subject to claims that former employees, licensees or other third parties have an interest in our licensed patents or other licensed or owned intellectual property as an inventor or co-inventor. For example, we may have inventorship disputes arise from conflicting obligations of consultants or others who are involved in developing our product candidates. Litigation may be necessary to defend against these and other claims challenging inventorship. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights, such as exclusive ownership of, or right to use, valuable intellectual property. Such an outcome could have a material adverse effect on our business, financial condition and results of operations. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management and other employees.

If we do not obtain additional protection under the Hatch-Waxman Amendments and similar foreign legislation extending the terms of our licensed patents and any future patents we may own, our business, financial condition and results of operations may be materially and adversely affected.

Depending upon the timing, duration and specifics of FDA regulatory approval for our product candidates, one or successfully commercialize emricasan. Asmore of our licensed U.S. patents or future U.S. patents that we may license or own may be eligible for limited patent term restoration under the Drug Price Competition and Patent Term Restoration Act of 1984, referred to as the Hatch-Waxman Amendments. The Hatch-Waxman Amendments permit a result, our financial resultspatent restoration term of up to five years as compensation for patent term lost during drug development and the commercial prospectsFDA regulatory review process. This period is generally one-half the time between the effective date of an investigational new drug application (“IND”) (falling after issuance of the patent), and the submission date of an NDA, plus the time between the submission date of an NDA and the approval of that application. Patent term restorations, however, cannot extend the remaining term of a patent beyond a total of 14 years from the date of product approval by the FDA.

The application for emricasan wouldpatent term extension is subject to approval by the USPTO, in conjunction with the FDA. It takes at least six months to obtain approval of the application for patent term extension. We may not be harmed,granted an extension because of, for example, failing to apply within applicable deadlines, failing to apply prior to expiration of relevant patents or otherwise failing to satisfy applicable requirements. Moreover, the applicable time period or the scope of patent protection afforded could be less than our costs could increaserequests. If we are unable to obtain patent term extension or restoration or the term of any such extension is less than our requests, the period during which we will have the right to exclusively market our product will be shortened and our competitors may obtain earlier approval of competing products, and our ability to generate revenues could be delayed.materially adversely affected.

Switching or adding CROs involves substantial cost

Risks Related Owning Our Common Stock

The market price of our common stock has been and requires extensive management timemay continue to be volatile.

The market price of our common stock has been and focus. In addition, there ismay continue to be volatile. Our stock price could be subject to wide fluctuations in response to a natural transition period when a new CRO commences work. As a result, delays occur, which can materially impact our ability to meet our desired clinical development timelines. Although we carefully manage our relationships with our CROs, there can be no assurance that we will not encounter challenges orvariety of factors, including the following:

results from, and any delays in, theplanned clinical trials for our product candidates, or any other future or that these delays or challenges will not have a material adverse impact on our business, prospects, financial conditionproduct candidates, and the results of operations.trials of competitors or those of other companies in the combined organization’s market sector;

We rely completely on third parties

any delay in filing an Investigational New Drug Application, Investigational Device Exemption or BLA, NDA or PMA, for any of our product candidates and any adverse development or perceived adverse development with respect to manufacture our preclinical and clinical drug supplies and we intend to rely on third parties to produce commercial suppliesthe FDA’s review of emricasan, if approved. The development and commercialization of emricasan could be stopped, delayedthat IND, IDE or made less profitable if those third parties failBLA, NDA or PMA;

significant lawsuits, including patent or stockholder litigation;

inability to obtain additional funding;

failure to successfully develop and maintain regulatory approval of their facilities, failcommercialize our product candidates;

changes in laws or regulations applicable to provide us with sufficient quantities of drugour product candidates;

inability to obtain adequate product supply for our product candidates, or failthe inability to do so at acceptable quality levels or prices.prices;

We do not currently have nor do we plan

unanticipated serious safety concerns related to acquire the infrastructure or capability internally to manufacture our clinical drug supplies for use in the conductany of our clinical trials,product candidates;

adverse regulatory decisions;

introduction of new products or technologies by our competitors;

failure to meet or exceed drug development or financial projections we provide to the public;

failure to meet or exceed the estimates and we lackprojections of the resourcesinvestment community;

the perception of the biopharmaceutical industry by the public, legislatures, regulators and the capabilityinvestment community;

announcements of significant acquisitions, strategic partnerships, joint ventures or capital commitments by us or our competitors;

disputes or other developments relating to manufacture emricasan on a clinical or commercial scale. Instead, we rely on contract manufacturers for such production.

We do not currently have any agreement with a manufacturer to produce the active pharmaceutical ingredient, or API, in emricasan. We acquired quantities of the API from Pfizer as part of our acquisition of theproprietary rights, to the drug candidate. We believe the quantities we acquired from Pfizer are sufficient to support our planned Phase 2b ACLF trial, Phase 2b/3 HCV-POLT trialincluding patents, litigation matters and Phase 2b CLF trial. However, we will need to identify and qualify a new third-party manufacturer of API prior to commercialization of emricasan and, if our estimates regarding our supply are incorrect, prior to the completion of our planned clinical trials. Any delay in identifying and qualifying a new manufacturer of API could delay the potential commercialization of emricasan, and, in the event that we do not have sufficient API to complete our planned clinical trials, it could delay such trials.

In addition, we do not currently have a long-term commitment for the production of finished emricasan drug product. Metrics, Inc., a contract manufacturer, has performed formulation and finished goods manufacturing for us based on purchase orders. We expect to continue to purchase finished drug product from Metrics, but currently have no long-term supply commitment with Metrics. If Metrics is unable to produce the amount of finished drug product we need, we may need to identify and qualify other third-party manufacturers of finished drug product in order to complete the clinical development and commercialization of emricasan. Metrics’ inability to produce the amount of finished drug product we need, or any delay in identifying and qualifying another manufacturer of finished drug product could delay our clinical trials and the potential commercialization of emricasan.

The facilities used by our contract manufacturers to manufacture emricasan must be approved by the applicable regulatory authorities, including the FDA, pursuant to inspections that will be conducted after an NDA or comparable foreign regulatory marketing application is submitted. We do not control the manufacturing process of emricasan and are completely dependent on our contract manufacturing partners for compliance with the FDA’s requirements for manufacture of both the active drug substances and finished drug product. If our contract manufacturers cannot successfully manufacture material that conforms to our specifications and the FDA’s strict regulatory requirements, they will not be able to secure or maintain FDA approval for the manufacturing facilities. In addition, we have no control over the ability of our contract manufacturers to maintain adequate quality control, quality assurance and qualified personnel. If the FDA or any other applicable regulatory authorities does not approve these facilities for the manufacture of emricasan or if it withdraws any such approval in the future, or if our suppliers or contract manufacturers decide they no longer want to supply or manufacture for us, we may need to find alternative manufacturing facilities, in which case we might not be able to identify manufacturers for clinical or commercial supply on acceptable terms, or at all, which would significantly impact our ability to develop, obtain regulatory approvalpatent protection for our licensed and owned technologies;

additions or departures of key scientific or management personnel;

changes in the market emricasan.valuations of similar companies;

general economic and market conditions and overall fluctuations in the U.S. equity market;

public health crises, pandemics and epidemics, such as the recent coronavirus disease 2019 (COVID-19);

sales of our common stock by us or our stockholders in the future; and

trading volume of our common stock.

In addition, the manufacture of pharmaceutical products is complexstock market, in general, and requires significant expertisesmall biopharmaceutical companies, in particular, have experienced extreme price and capital investment, including the development of advanced manufacturing techniques and process controls. Manufacturers of pharmaceutical productsvolume fluctuations that have often encounter difficulties in production, particularly in scaling up and validating initial production and absence of contamination. These problems include difficulties with production costs and yields, quality control, including stability of the product, quality assurance testing, operator error, shortages of qualified personnel, as well as compliance with strictly enforced federal, state and foreign regulations. Furthermore, if contaminants are discovered in our supply of emricasanbeen unrelated or in the manufacturing facilities in which emricasan is made, such manufacturing facilities may need to be closed for an extended period of time to investigate and remedy the contamination. We cannot assure you that any stability or other issues relatingdisproportionate to the manufacture of emricasan will not occur in the future. Additionally, our manufacturers may experience manufacturing difficulties due to resource constraints or as a result of labor disputes or unstable political environments. If our manufacturers were to encounter anyoperating performance of these difficulties, or otherwise fail to comply with their contractual obligations, our ability to provide our drug candidate to patients in clinical trials would be jeopardized. Any delay or interruption in the supply of clinical trial supplies could delay the completion of clinical trials, increase the costs associated with maintaining clinical trial programscompanies. Broad market and depending upon the period of delay, require us to commence new clinical trials at additional expense or terminate clinical trials completely.industry factors

If our third-party manufacturers use hazardous and biological materials in a manner that causes injury or violates applicable law, we

may be liable for damages.

Our research and development activities involve the controlled use of potentially hazardous substances, including chemical and biological materials by our third-party manufacturers. Our manufacturers are subject to federal, state and local laws and regulations in the United States governing the use, manufacture, storage, handling and disposal of medical, radioactive and hazardous materials. Although we believe that our manufacturers’ procedures for using, handling, storing and disposing of these materials comply with legally prescribed standards, we cannot completely eliminate the risk of contamination or injury resulting from medical, radioactive or hazardous materials. As a result of any such contamination or injury we may incur liability or local, city, state or federal authorities may curtail the use of these materials and interrupt our business operations. In the event of an accident, we could be held liable for damages or penalized with fines, and the liability could

exceed our resources. We do not have any insurance for liabilities arising from medical radioactive or hazardous materials. Compliance with applicable environmental laws and regulations is expensive, and current or future environmental regulations may impair our research, development and production efforts, which could harm our business, prospects, financial condition or results of operations.

Risks Related to Our Financial Position and Capital Requirements

We have a limited operating history, have incurred significant operating losses since our inception and anticipate that we will continue to incur losses for the foreseeable future.

Our operations began in 2005 and we have only a limited operating history upon which you can evaluate our business and prospects. Our operations to date have been limited to conducting product development activities for emricasan and performing research and development with respect to our clinical and preclinical programs. In addition, as an early stage company, we have limited experience and have not yet demonstrated an ability to successfully overcome many of the risks and uncertainties frequently encountered by companies in new and rapidly evolving fields, particularly in the pharmaceutical area. Nor have we demonstrated an ability to obtain regulatory approval for or to commercialize a drug candidate. Consequently, any predictions about our future performance may not be as accurate as they would be if we had a history of successfully developing and commercializing pharmaceutical products.

To date, we have financed our operations primarily through private placements of convertible debt and preferred stock, and we have incurred significant operating losses since our inception, including consolidated net losses of $12.0 million and $8.7 million for the years ended December 31, 2011 and 2012, respectively, and $2.3 million for the three months ended March 31, 2013. As of March 31, 2013, we had an accumulated deficit of $61.1 million. Our prior losses, combined with expected future losses, have had and will continue to have an adverse effect on our stockholders’ equity and working capital. Our losses have resulted principally from costs incurred in our research and development activities. We anticipate that our operating losses will substantially increase over the next several years as we execute our plan to expand our research, development and commercialization activities, including the clinical development and planned commercialization of our drug candidate, emricasan, and incur the additional costs of operating as a public company. In addition, if we obtain regulatory approval of emricasan, we may incur significant sales and marketing expenses. Because of the numerous risks and uncertainties associated with developing pharmaceutical products, we are unable to predict the extent of any future losses or whether or when we will become profitable, if ever.

Our independent registered public accounting firm has included an explanatory paragraph relating to our ability to continue as a going concern in its report on our audited financial statements included in this prospectus.

Our report from our independent registered public accounting firm for the year ended December 31, 2012 includes an explanatory paragraph stating that our recurring losses from operations and negative cash flows raise substantial doubt about our ability to continue as a going concern. If we are unable to obtain sufficient funding, our business, prospects, financial condition and results of operations will be materially and adversely affected and we may be unable to continue as a going concern. If we are unable to continue as a going concern, we may have to liquidate our assets and may receive less than the value at which those assets are carried on our audited consolidated financial statements, and it is likely that investors will lose all or a part of their investment. After this offering, future reports from our independent registered public accounting firm may also contain statements expressing doubt about our ability to continue as a going concern. If we seek additional financing to fund our business activities in the future and there remains doubt about our ability to continue as a going concern, investors or other financing sources may be unwilling to provide additional funding on commercially reasonable terms or at all.

We have not generated any revenues to date from product sales. We may never achieve or sustain profitability, which could depressnegatively affect the market price of our common stock, and could cause you to lose all orregardless of our actual operating performance. Further, a part of your investment.

Our ability to become profitable depends on our ability to develop and commercialize emricasan. To date, we have no products approved for commercial sale and have not generated any revenues from sales of any drug

candidate, and we do not know when, or if, we will generate revenuesdecline in the future. We do not anticipate generating revenues, if any, from sales of emricasan for at least the next several yearsfinancial markets and we will never generate revenues from emricasan if we do not obtain regulatory approval for emricasan. Our ability to generate future revenues depends heavily onrelated factors beyond our success in:

developing and securing U.S. and/or foreign regulatory approvals for emricasan;

manufacturing commercial quantities of emricasan at acceptable cost;

achieving broad market acceptance of emricasan in the medical community and with third-party payors and patients;

commercializing emricasan, assuming we receive regulatory approval; and

pursuing clinical development of emricasan in additional indications.

Even if we do generate product sales, we may never achieve or sustain profitability. Our failure to become and remain profitable would depress the market price of our common stock and could impair our ability to raise capital, expand our business, diversify our product offerings or continue our operations.

If we fail to obtain additional financing, we may be unable to complete the development and commercialization of emricasan.

Our operations have consumed substantial amounts of cash since inception. We expect to continue to spend substantial amounts to continue the clinical development of emricasan, including our planned Phase 2 and Phase 3 clinical trials. If approved, we will require significant additional amounts in order to launch and commercialize emricasan, including building our own commercial capabilities to sell, market, and distribute emricasan in the United States and the EU.

We estimate that our net proceeds from this offering will be approximately $             million, based upon an assumed initial public offering price of $             per share (the midpoint of the price range set forth on the cover page of this prospectus), after deducting the estimated underwriting discounts and commissions and offering expenses payable by us. We believe that such proceeds together with our existing cash and cash equivalents will be sufficient to fund our operations for at least the next 18 months. In particular, we expect that the net proceeds from this offering will allow us to complete our planned Phase 2b ACLF trial, Phase 2b/3 HCV-POLT trial and Phase 2b CLF trial. However, changing circumstancescontrol may cause usour stock price to consume capital significantly faster than we currently anticipate,decline rapidly and we may need to spend more money than currently expected because of circumstances beyond our control. We will require additional capital for the further development and commercialization of emricasan and may need to raise additional funds sooner if we choose to expand more rapidly than we presently anticipate.

We cannot be certain that additional funding will be available on acceptable terms, or at all. If we are unable to raise additional capital in sufficient amounts or on terms acceptable to us, we may have to significantly delay, scale back or discontinue the development or commercialization of emricasan or other research and development initiatives. We also could be required to seek collaborators for emricasan at an earlier stage than otherwise would be desirable or on terms that are less favorable than might otherwise be available or relinquish or license on unfavorable terms our rights to emricasan in markets where we otherwise would seek to pursue development or commercialization ourselves.

Any of the above events could significantly harm our business, prospects, financial condition and results of operations and cause the price of our common stock to decline.unexpectedly.

Raising additional capital may cause dilution to our existing stockholders, restrict our operations or require us to relinquish rights to our technologies or drugproduct candidate.

We may seek additional capital through a combination of public and private equity offerings, debt financings, strategic partnerships and alliances and licensing arrangements. ToWe have a purchase agreement in place with Lincoln Park to sell up to $10.0 million worth of shares of our common stock, from time to time, to Lincoln Park, under which $8.5 million remains available for future sale as of September 30, 2020. Any sales under the Lincoln Park arrangement, and to the extent that we raise additional capital through the sale of equity or convertible debt securities, yourthe ownership interestinterests of our stockholders will be diluted, and the terms may include liquidation or other preferences that adversely affect yourthe rights as a stockholder.of our stockholders. The incurrence of

indebtedness would result in increased fixed payment obligations and could involve certain restrictive covenants, such as limitations on our ability to incur additional debt, limitations on our ability to acquire or license intellectual property rights and other operating restrictions that could adversely impact our ability to conduct our business. If we raise additional funds through strategic partnerships and alliances and licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies or drugproduct candidate, or grant licenses on terms unfavorable to us.

Our ability to utilize our net operating loss carryforwards and certain other tax attributes may be limited.

Under Section 382 of the Internal Revenue Code of 1986, as amended, if a corporation undergoes an “ownership change” (generally defined as a greater than 50% change (by value) in its equity ownership over a three year period), the corporation’s ability to use its pre-change net operating loss carryforwards and other pre-change tax attributes to offset its post-change income may be limited. As a result of our most recent private placements and other transactions that have occurred over the past three years, we may have experienced, and, upon completion of this offering, may experience, an “ownership change.” We may also experience ownership changes in the future as a result of subsequent shifts in our stock ownership. As of December 31, 2012, we had federal and state net operating loss carryforwards of approximately $52.3 million and $51.2 million, respectively, and federal and state research and development credits of $1.3 million and $745,000, respectively, which could be limited if we experience an “ownership change.”

Unstable market and economic conditions may have serious adverse consequences on our business, financial condition and stock price.

As widely reported, global credit and financial markets have experienced extreme disruptions in the past several years, including severely diminished liquidity and credit availability, declines in consumer confidence, declines in economic growth, increases in unemployment rates, and uncertainty about economic stability. There can be no assurance that further deterioration in credit and financial markets and confidence in economic conditions will not occur. Our general business strategy may be adversely affected by any such economic downturn, volatile business environment or continued unpredictable and unstable market conditions. If the current equity and credit markets deteriorate, or do not improve, it may make any necessary debt or equity financing more difficult, more costly, and more dilutive. Failure to secure any necessary financing in a timely manner and on favorable terms could have a material adverse effect on our growth strategy, financial performance and stock price and could require us to delay or abandon clinical development plans. In addition, there is a risk that one or more of our current service providers, manufacturers and other partners may not survive these difficult economic times, which could directly affect our ability to attain our operating goals on schedule and on budget.

At March 31, 2013, we had approximately $5.1 million of cash, cash equivalents and short-term investments. While we are not aware of any downgrades, material losses, or other significant deterioration in the fair value of our cash equivalents since March 31, 2013, no assurance can be given that further deterioration of the global credit and financial markets would not negatively impact our current portfolio of cash equivalents or marketable securities or our ability to meet our financing objectives. Furthermore, our stock price may decline due in part to the volatility of the stock market and the general economic downturn.

Risks Related to Our Intellectual Property

If our efforts to protect the proprietary nature of the intellectual property related to our technologies are not adequate, we may not be able to compete effectively in our market.

We rely upon a combination of patents, trade secret protection and confidentiality agreements to protect the intellectual property related to our technologies. Any disclosure to or misappropriation by third parties of our confidential proprietary information could enable competitors to quickly duplicate or surpass our technological achievements, thus eroding our competitive position in our market.

Composition-of-matter patents on the active pharmaceutical ingredient and crystalline forms are generally considered to be the strongest form of intellectual property protection for pharmaceutical products, as such

patents provide protection without regard to any method of use. We cannot be certain that the claims in our patent applications covering composition-of-matter and crystalline forms of emricasan will be considered patentable by the United States Patent and Trademark Office, or the U.S. PTO, courts in the United States, or by the patent offices and courts in foreign countries. Method-of-use patents protect the use of a product for the specified method. This type of patent does not prevent a competitor from making and marketing a product that is identical to our product for an indication that is outside the scope of the patented method. Moreover, even if competitors do not actively promote their product for our targeted indications, physicians may prescribe these products “off-label.” Although off-label prescriptions may infringe or contribute to the infringement of method-of-use patents, the practice is common and such infringement is difficult to prevent or prosecute.

The strength of patents in the biotechnology and pharmaceutical field involves complex legal and scientific questions and can be uncertain. Some of our patents related to emricasan were acquired from a predecessor owner and were therefore not written by us or our attorneys, and we did not have control over the drafting and prosecution of these patents. Further, the former patent owners might not have given the same attention to the drafting and early prosecution of these patents and applications as we would have if we had been the owners of the patents and applications and had control over the drafting and prosecution. In addition, the former patent owners may not have been completely familiar with U.S. patent law, possibly resulting in inadequate disclosure and/or claims. This could result in findings of invalidity or unenforceability of the patents we own or patents issuing with reduced claim scope.

In addition, the patent applications that we own or that we may license may fail to result in issued patents in the United States or in other foreign countries. Even if the patents do successfully issue, third parties may challenge the validity, enforceability or scope thereof, which may result in such patents being narrowed, invalidated or held unenforceable. Furthermore, even if they are unchallenged, our patents and patent applications may not adequately protect our intellectual property or prevent others from designing around our claims. If the breadth or strength of protection provided by the patent applications we hold with respect to emricasan is threatened, it could dissuade companies from collaborating with us to develop, and threaten our ability to commercialize, emricasan. Further, if we encounter delays in our clinical trials, the period of time during which we could market emricasan under patent protection would be reduced. Since patent applications in the United States and most other countries are confidential for a period of time after filing, we cannot be certain that we were the first to file any patent application related to emricasan. Furthermore, for applications in which all claims are entitled to a priority date before March 16, 2013, an interference proceeding can be provoked by a third-party or instituted by the U.S. PTO, to determine who was the first to invent any of the subject matter covered by the patent claims of our applications. For applications containing a claim not entitled to priority before March 16, 2013, there is greater level of uncertainty in the patent law with the passage of the America Invents Act (2012) which brings into effect significant changes to the U.S. patent laws that are yet untried and untested, and which introduces new procedures for challenging pending patent applications and issued patents. A primary change under this reform is creating a “first to file” system in the U.S. This will require us to be cognizant going forward of the time from invention to filing of a patent application.

In addition to the protection afforded by patents, we seek to rely on trade secret protection and confidentiality agreements to protect proprietary know-how that is not patentable, processes for which patents are difficult to enforce and any other elements of our drug discovery and development processes that involve proprietary know-how, information or technology that is not covered by patents. Although we require all of our employees to assign their inventions to us, and require all of our employees, consultants, advisors and any third parties who have access to our proprietary know-how, information or technology to enter into confidentiality agreements, we cannot be certain that our trade secrets and other confidential proprietary information will not be disclosed or that competitors will not otherwise gain access to our trade secrets or independently develop substantially equivalent information and techniques. Furthermore, the laws of some foreign countries do not protect proprietary rights to the same extent or in the same manner as the laws of the United States. As a result, we may encounter significant problems in protecting and defending our intellectual property both in the United States and abroad. If we are unable to prevent unauthorized material disclosure of our intellectual property to third parties, we will not be able to establish or maintain a competitive advantage in our market, which could materially adversely affect our business, operating results and financial condition.

Third-party claims of intellectual property infringement may prevent or delay our drug discovery and development efforts.

Our commercial success depends in part on our avoiding infringement of the patents and proprietary rights of third parties. There is a substantial amount of litigation involving patents and other intellectual property rights in the biotechnology and pharmaceutical industries, as well as administrative proceedings for challenging patents, including interference and reexamination proceedings before the U.S. PTO or oppositions and other comparable proceedings in foreign jurisdictions. Recently, under U.S. patent reform, new procedures includinginter partes review and post grant review have been implemented. As stated above, this reform is untried and untested and will bring uncertainty to the possibility of challenge to our patents in the future. Numerous U.S. and foreign issued patents and pending patent applications, which are owned by third parties, exist in the fields in which we are developing emricasan. As the biotechnology and pharmaceutical industries expand and more patents are issued, the risk increases that emricasan may give rise to claims of infringement of the patent rights of others.

Third parties may assert that we are employing their proprietary technology without authorization. There may be third-party patents of which we are currently unaware with claims to materials, formulations, methods of manufacture or methods for treatment related to the use or manufacture of emricasan. Because patent applications can take many years to issue, there may be currently pending patent applications which may later result in issued patents that emricasan may infringe. In addition, third parties may obtain patents in the future and claim that use of our technologies infringes upon these patents. If any third-party patents were held by a court of competent jurisdiction to cover the manufacturing process of emricasan, any molecules formed during the manufacturing process or any final product itself, the holders of any such patents may be able to block our ability to commercialize the drug candidate unless we obtained a license under the applicable patents, or until such patents expire or they are finally determined to be held invalid or unenforceable. Similarly, if any third-party patent were held by a court of competent jurisdiction to cover aspects of our formulations, processes for manufacture or methods of use, including combination therapy or patient selection methods, the holders of any such patent may be able to block our ability to develop and commercialize the drug candidate unless we obtained a license or until such patent expires or is finally determined to be held invalid or unenforceable. In either case, such a license may not be available on commercially reasonable terms or at all. If we are unable to obtain a necessary license to a third-party patent on commercially reasonable terms, or at all, our ability to commercialize emricasan may be impaired or delayed, which could in turn significantly harm our business.

Parties making claims against us may seek and obtain injunctive or other equitable relief, which could effectively block our ability to further develop and commercialize emricasan. Defense of these claims, regardless of their merit, would involve substantial litigation expense and would be a substantial diversion of employee resources from our business. In the event of a successful claim of infringement against us, we may have to pay substantial damages, including treble damages and attorneys’ fees for willful infringement, obtain one or more licenses from third parties, pay royalties or redesign our infringing products, which may be impossible or require substantial time and monetary expenditure. We cannot predict whether any such license would be available at all or whether it would be available on commercially reasonable terms. Furthermore, even in the absence of litigation, we may need to obtain licenses from third parties to advance our research or allow commercialization of emricasan. We may fail to obtain any of these licenses at a reasonable cost or on reasonable terms, if at all. In that event, we would be unable to further develop and commercialize emricasan, which could harm our business significantly.

We may be involved in lawsuits to protect or enforce our patents, which could be expensive, time-consuming and unsuccessful.

Competitors may infringe our patents. To counter infringement or unauthorized use, we may be required to file infringement claims, which can be expensive and time-consuming. In addition, in an infringement proceeding, a court may decide that one or more of our patents is not valid or is unenforceable, or may refuse to stop the other party from using the technology at issue on the grounds that our patents do not cover the technology in question. An adverse result in any litigation or defense proceedings could put one or more of our patents at risk of being invalidated, held unenforceable, or interpreted narrowly and could put our patent applications at risk of not

issuing. Defense of these claims, regardless of their merit, would involve substantial litigation expense and would be a substantial diversion of employee resources from our business. In the event of a successful claim of infringement against us, we may have to pay substantial damages, including treble damages and attorneys’ fees for willful infringement, obtain one or more licenses from third parties, pay royalties or redesign our infringing products, which may be impossible or require substantial time and monetary expenditure.

Interference proceedings provoked by third parties or brought by the U.S. PTO may be necessary to determine the priority of inventions with respect to our patents or patent applications. An unfavorable outcome could require us to cease using the related technology or to attempt to license rights to it from the prevailing party. Our business could be harmed if the prevailing party does not offer us a license on commercially reasonable terms. Litigation or interference proceedings may fail and, even if successful, may result in substantial costs and distract our management and other employees. We may not be able to prevent misappropriation of our trade secrets or confidential information, particularly in countries where the laws may not protect those rights as fully as in the United States.

Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential information could be compromised by disclosure during this type of litigation. In addition, there could be public announcements of the results of hearings, motions or other interim proceedings or developments. If securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on the price of our common stock.

Obtaining and maintaining our patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for non-compliance with these requirements.

Periodic maintenance fees on any issued patent are due to be paid to the U.S. PTO and foreign patent agencies in several stages over the lifetime of the patent. The U.S. PTO and various foreign governmental patent agencies require compliance with a number of procedural, documentary, fee payment and other similar provisions during the patent application process. While an inadvertent lapse can in many cases be cured by payment of a late fee or by other means in accordance with the applicable rules, there are situations in which noncompliance can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. Non-compliance events that could result in abandonment or lapse of a patent or patent application include, but are not limited to, failure to respond to official actions within prescribed time limits, non-payment of fees and failure to properly legalize and submit formal documents. In such an event, our competitors might be able to enter the market, which would have a material adverse effect on our business.

We may be subject to claims that our employees, consultants or independent contractors have wrongfully used or disclosed confidential information of third parties.

We have received confidential and proprietary information from third parties. In addition, we employ individuals who were previously employed at other biotechnology or pharmaceutical companies. We may be subject to claims that we or our employees, consultants or independent contractors have inadvertently or otherwise used or disclosed confidential information of these third parties or our employees’ former employers. Litigation may be necessary to defend against these claims. Even if we are successful in defending against these claims, litigation could result in substantial cost and be a distraction to our management and employees.

Risks Related to This Offering and Ownership of our Common Stock

We do not know whether an active, liquid and orderly trading market will develop for our common stock or what the market price of our common stock will be and as a result it may be difficult for you to sell your shares of our common stock.

Prior to this offering there has been no public market for shares of our common stock. Although we expect that our common stock will be approved for listing on The NASDAQ Global Market, an active trading market for our shares may never develop or be sustained following this offering. You may not be able to sell your shares quickly or at the market price if trading in shares of our common stock is not active. The initial public offering price for our common stock will be determined through negotiations with the underwriters, and the negotiated price may

not be indicative of the market price of the common stock after the offering. As a result of these and other factors, you may be unable to resell your shares of our common stock at or above the initial public offering price. Further, an inactive market may also impair our ability to raise capital by selling shares of our common stock and may impair our ability to enter into strategic partnerships or acquire companies or products by using our shares of common stock as consideration.

The price of our stock may be volatile, and you could lose all or part of your investment.

The trading price of our common stock following this offering is likely to be highly volatile and could be subject to wide fluctuations in response to various factors, some of which are beyond our control, including limited trading volume. In addition to the factors discussed in this “Risk Factors” section and elsewhere in this prospectus, these factors include:

the commencement, enrollment or results of our planned Phase 2 and Phase 3 clinical trials of emricasan or any future clinical trials we may conduct, or changes in the development status of emricasan;

any delay in our regulatory filings for emricasan and any adverse development or perceived adverse development with respect to the applicable regulatory authority’s review of such filings, including without limitation the FDA’s issuance of a “refusal to file” letter or a request for additional information;

adverse results or delays in clinical trials;

our decision to initiate a clinical trial, not to initiate a clinical trial or to terminate an existing clinical trial;

adverse regulatory decisions, including failure to receive regulatory approval for emricasan;

changes in laws or regulations applicable to our products, including but not limited to clinical trial requirements for approvals;

adverse developments concerning our manufacturers;

our inability to obtain adequate product supply for any approved drug product or inability to do so at acceptable prices;

our inability to establish collaborations if needed;

our failure to commercialize emricasan;

additions or departures of key scientific or management personnel;

unanticipated serious safety concerns related to the use of emricasan;

introduction of new products or services offered by us or our competitors;

announcements of significant acquisitions, strategic partnerships, joint ventures or capital commitments by us or our competitors;

our ability to effectively manage our growth;

the size and growth, if any, of the ACLF, CLF and HCV-POLT markets and other targeted markets;

our ability to successfully enter new markets;

actual or anticipated variations in quarterly operating results;

our cash position;

our failure to meet the estimates and projections of the investment community or that we may otherwise provide to the public;

publication of research reports about us or our industry or positive or negative recommendations or withdrawal of research coverage by securities analysts;

changes in the market valuations of similar companies;

overall performance of the equity markets;

sales of our common stock by us or our stockholders in the future;

trading volume of our common stock;

changes in accounting practices;

ineffectiveness of our internal controls;

disputes or other developments relating to proprietary rights, including patents, litigation matters and our ability to obtain patent protection for our technologies;

significant lawsuits, including patent or stockholder litigation;

general political and economic conditions; and

other events or factors, many of which are beyond our control.

In addition, the stock market in general, and The NASDAQ Global Market and biotechnology companies in particular, have experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of these companies. Broad market and industry factors may negatively affect the market price of our common stock, regardless of our actual operating performance. If the market price of our common stock after this offering does not exceed the initial public offering price, you may not realize any return on your investment in us and may lose some or all of your investment. In the past, securities class action litigation has often been instituted against companies following periods of volatility in the market price of a company’s securities. This type of litigation, if instituted, could result in substantial costs and a diversion of management’s attention and resources, which would harm our business, operating results or financial condition.

We do not intend to pay dividends on our common stock so any returns will be limited to the value of our stock.

We have never declared or paid any cash dividend on our common stock. We currently anticipate that we will retain future earnings for the development, operation and expansion of our business and do not anticipate declaring or paying any cash dividends for the foreseeable future. In addition, our ability to pay cash dividends is currently prohibited by the terms of a promissory note in the principal amount of $1.0 million issued by us to Pfizer Inc. in July 2010. Any return to stockholders will therefore be limited to the appreciation of their stock.

Our principal stockholders and management own a significant percentage of our stock and will be able to exert significant control over matters subject to stockholder approval.

Prior to this offering, our executive officers, directors, 5% stockholders and their affiliates owned approximately             % of our voting stock and, upon the closing of this offering, that same group will hold approximately             % of our outstanding voting stock (assuming no exercise of the underwriters’ over-allotment option) in each case assuming an initial public offering price of $            per share (the midpoint of the price range set forth on the cover page of this prospectus). Therefore, even after this offering, these stockholders will have the ability to influence us through this ownership position. These stockholders may be able to determine all matters requiring stockholder approval. For example, these stockholders may be able to control elections of directors, amendments of our organizational documents, or approval of any merger, sale of assets, or other major corporate transaction. This may prevent or discourage unsolicited acquisition proposals or offers for our common stock that you may feel are in your best interest as one of our stockholders. In addition, entities affiliated with Aberdare Ventures, Advent Private Equity, Coöperative Gilde Healthcare II U.A., MPM Capital, Roche Finance Ltd, AgeChem Venture Fund L.P., Hale BioPharma Ventures LLC and our chief executive officer, each of which is a current stockholder, have indicated an interest in purchasing an aggregate of approximately $10.0 million of shares of our common stock in this offering. The above discussed ownership percentage upon completion of this offering does not reflect the potential purchase of any shares in this offering by such entities. If these entities purchase                 shares of our common stock in this offering, assuming an initial public offering price of $            per share (the midpoint of the price range set forth on the cover page of this prospectus), upon completion of this offering, our executive officers, directors, 5% stockholders and their affiliates will hold approximately             % of our voting stock (assuming no exercise of the underwriters’ over-allotment option).

If you purchase our common stock in this offering, you will incur immediate and substantial dilution in the book value of your shares.

The initial public offering price is substantially higher than the net tangible book value per share of our common stock. Investors purchasing common stock in this offering will pay a price per share that substantially exceeds the book value of our tangible assets after subtracting our liabilities. As a result, investors purchasing common stock in this offering will incur immediate dilution of $            per share, based upon an assumed initial public offering price of $            per share (the midpoint of the price range set forth on the cover page of this prospectus). Further, investors purchasing common stock in this offering will contribute approximately             % of the total amount invested by stockholders since our inception, but will own only approximately             % of the shares of common stock outstanding after giving effect to this offering.

This dilution is due to our investors who purchased shares prior to this offering having paid substantially less when they purchased their shares than the price offered to the public in this offering and the exercise of stock options granted to our employees. To the extent outstanding options or warrants are exercised, there will be further dilution to new investors. As a result of the dilution to investors purchasing shares in this offering, investors may receive significantly less than the purchase price paid in this offering, if anything, in the event of our liquidation. For a further description of the dilution that you will experience immediately after this offering, see “Dilution.”

We are an emerging growth company, and we cannot be certain if the reduced reporting requirements applicable to emerging growth companies will make our common stock less attractive to investors.

We are an emerging growth company, as defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act. For as long as we continue to be an emerging growth company, we may take advantage of exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies, including not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act, reduced disclosure obligations regarding executive compensation in this prospectus and our periodic reports and proxy statements and exemptions from the requirements of holding nonbinding advisory votes on executive compensation and stockholder approval of any golden parachute payments not previously approved. We could be an emerging growth company for up to five years following the year in which we complete this offering, although circumstances could cause us to lose that status earlier, including if the market value of our common stock held by non-affiliates exceeds $700.0 million as of any June 30 before that time or if we have total annual gross revenue of $1.0 billion or more during any fiscal year before that time, in which cases we would no longer be an emerging growth company as of the following December 31 or, if we issue more than $1.0 billion in non-convertible debt during any three year period before that time, we would cease to be an emerging growth company immediately. Even after we no longer qualify as an emerging growth company, we may still qualify as a “smaller reporting company” which would allow us to take advantage of many of the same exemptions from disclosure requirements including not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act and reduced disclosure obligations regarding executive compensation in this prospectus and our periodic reports and proxy statements. We cannot predict if investors will find our common stock less attractive because we may rely on these exemptions. If some investors find our common stock less attractive as a result, there may be a less active trading market for our common stock and our stock price may be more volatile.

Under the JOBS Act, emerging growth companies can also delay adopting new or revised accounting standards until such time as those standards apply to private companies. We have irrevocably elected not to avail ourselves of this exemption from new or revised accounting standards and, therefore, will be subject to the same new or revised accounting standards as other public companies that are not emerging growth companies. As a result, changes in rules of U.S. generally accepted accounting principles or their interpretation, the adoption of new guidance or the application of existing guidance to changes in our business could significantly affect our financial position and results of operations.

We will incur significant increased costs as a result of operating as a public company, and our management will be required to devote substantial time to new compliance initiatives.

As a public company, we will incur significant legal, accounting and other expenses that we did not incur as a private company. We will be subject to the reporting requirements of the Securities Exchange Act of 1934, as amended, which will require, among other things, that we file with the Securities and Exchange Commission, or the SEC, annual, quarterly and current reports with respect to our business and financial condition. In addition, the Sarbanes-Oxley Act, as well as rules subsequently adopted by the SEC and The NASDAQ Global Market to implement provisions of the Sarbanes-Oxley Act, impose significant requirements on public companies, including requiring establishment and maintenance of effective disclosure and financial controls and changes in corporate governance practices. Further, in July 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act, or the Dodd-Frank Act, was enacted. There are significant corporate governance and executive compensation relatedAnti-takeover provisions in the Dodd-Frank Act that require the SEC to adopt additional rules and regulations in these areas such as “say on pay” and proxy access. Recent legislation permits emerging growth

companies to implement many of these requirements over a longer period and up to five years from the pricing of this offering. We intend to take advantage of this new legislation but cannot guarantee that we will not be required to implement these requirements sooner than budgeted or planned and thereby incur unexpected expenses. Stockholder activism, the current political environment and the current high level of government intervention and regulatory reform may lead to substantial new regulations and disclosure obligations, which may lead to additional compliance costs and impact the manner in which we operate our business in ways we cannot currently anticipate.

We expect the rules and regulations applicable to public companies to substantially increase our legal and financial compliance costs and to make some activities more time-consuming and costly. If these requirements divert the attention of our management and personnel from other business concerns, they could have a material adverse effect on our business, financial condition and results of operations. The increased costs will decrease our net income or increase our consolidated net loss, and may require us to reduce costs in other areas of our business or increase the prices of our products or services. For example, we expect these rules and regulations to make it more difficult and more expensive for us to obtain director and officer liability insurance and we may be required to incur substantial costs to maintain the same or similar coverage. We cannot predict or estimate the amount or timing of additional costs we may incur to respond to these requirements. The impact of these requirements could also make it more difficult for us to attract and retain qualified persons to serve on our board of directors, our board committees or as executive officers.

Sales of a substantial number of shares of our common stock by our existing stockholders in the public market could cause our stock price to fall.

If our existing stockholders sell, or indicate an intention to sell, substantial amounts of our common stock in the public market after the lock-up and other legal restrictions on resale discussed in this prospectus lapse, the trading price of our common stock could decline. Based on shares of common stock outstanding as of March 31, 2013, upon the closing of this offering we will have outstanding a total of                     shares of common stock, assuming net exercises of all outstanding warrants, no exercise of the underwriters’ over-allotment option and no exercise of outstanding options. Of these shares, only the shares of common stock sold in this offering by us, plus any shares sold upon exercise of the underwriters’ over-allotment option, will be freely tradable without restriction in the public market immediately following this offering. Stifel, Nicolaus & Company, Incorporated and Piper Jaffray & Co., however, may, in their sole discretion, permit our officers, directors and other stockholders who are subject to these lock-up agreements to sell shares prior to the expiration of the lock-up agreements.

We expect that the lock-up agreements pertaining to this offering will expire 180 days from the date of this prospectus. After the lock-up agreements expire, up to an additional                     shares of common stock will be eligible for sale in the public market, of which                     shares are held by directors, executive officers and other affiliates and will be subject to volume limitations under Rule 144 under the Securities Act, assuming an initial public offering price of $                    per share (the midpoint of the price range set forth on the cover page of this prospectus). In addition, shares of common stock that are either subject to outstanding options or reserved for future issuance under our employee benefit plans will become eligible for sale in the public market to the extent permitted by the provisions of various vesting schedules, the lock-up agreements and Rule 144 and Rule 701 under the Securities Act. If these additional shares of common stock are sold, or if it is perceived that they will be sold, in the public market, the trading price of our common stock could decline.

After this offering, the holders of                     shares of our common stock, or             % of our total outstanding common stock as of March 31, 2013, will be entitled to rights with respect to the registration of their shares under the Securities Act, subject to the 180-day lock-up agreements described above and assuming an initial public offering price of $                    per share (the midpoint of the price range set forth on the cover page of this prospectus). See “Description of Capital Stock—Registration Rights.” Registration of these shares under the Securities Act would result in the shares becoming freely tradable without restriction under the Securities Act, except for shares held by affiliates, as defined in Rule 144 under the Securities Act. Any sales of securities by these stockholders could have a material adverse effect on the trading price of our common stock.

Future sales and issuances of our common stock or rights to purchase common stock, including pursuant to our equity incentive plans, could result in additional dilution of the percentage ownership of our stockholders and could cause our stock price to fall.

We expect that significant additional capital may be needed in the future to continue our planned operations, including conducting clinical trials, commercialization efforts, expanded research and development activities and costs associated with operating a public company. To raise capital, we may sell common stock, convertible securities or other equity securities in one or more transactions at prices and in a manner we determine from time to time. If we sell common stock, convertible securities or other equity securities, investors may be materially diluted by subsequent sales. Such sales may also result in material dilution to our existing stockholders, and new investors could gain rights, preferences and privileges senior to the holders of our common stock, including shares of common stock sold in this offering.

Pursuant to our 2013 equity incentive plan, or the 2013 plan, which will become effective immediately prior to the closing of this offering, our management is authorized to grant stock options to our employees, directors and consultants. The number of shares available for future grant under the 2013 plan will automatically increase each year by an amount equal to 4% of all shares of our capital stock outstanding as of January 1stof each year, subject to the ability of our board of directors to take action to reduce the size of such increase in any given year. Unless our board of directors elects not to increase the number of shares available for future grant each year, our stockholders may experience additional dilution, which could cause our stock price to fall.

We could be subject to securities class action litigation.

In the past, securities class action litigation has often been brought against a company following a decline in the market price of its securities. This risk is especially relevant for us because pharmaceutical companies have experienced significant stock price volatility in recent years. If we face such litigation, it could result in substantial costs and a diversion of management’s attention and resources, which could harm our business.

We have broad discretion in the use of the net proceeds from this offering and may not use them effectively.

Our management will have broad discretion in the application of the net proceeds from this offering, including for any of the purposes described in the section entitled “Use of Proceeds,” and you will not have the opportunity as part of your investment decision to assess whether the net proceeds are being used appropriately. Because of the number and variability of factors that will determine our use of the net proceeds from this offering, their ultimate use may vary substantially from their currently intended use. Our management might not apply our net proceeds in ways that ultimately increase the value of your investment. We expect to use the net proceeds from this offering to fund the clinical development of emricasan and to fund working capital and for general corporate purposes. The failure by our management to apply these funds effectively could harm our business. Pending their use, we may invest the net proceeds from this offering in short-term, investment-grade, interest-bearing securities. These investments may not yield a favorable return to our stockholders. If we do not invest or apply the net proceeds from this offering in ways that enhance stockholder value, we may fail to achieve expected financial results, which could cause our stock price to decline.

Anti-takeover provisions under our charter documents and under Delaware law could delay or prevent a changemake an acquisition of control which could limit the market price of our common stockus more difficult and may prevent or frustrate attempts by our stockholders to replace or remove our current management.

Our amended and restatedProvisions in our certificate of incorporation and amended and restated bylaws which are to become effective at or prior to the closing of this offering, contain provisions that couldmay delay or prevent an acquisition or a change of control of our company or changes in ourmanagement. These provisions include a classified board of directors, that our stockholders might consider favorable. Some of these provisions include:

a board of directors divided into three classes serving staggered three-year terms, such that not all members of the board will be elected at one time;

a prohibition on stockholder action throughactions by written consent which requires that all stockholder actions be taken at a meeting of our stockholders;

a requirement that special meetings of stockholders be called only by the chairman of the board of directors,combined organization’s stockholders and the chief executive officer, the president or by a majority of the total number of authorized directors;

advance notice requirements for stockholder proposals and nominations for election to our board of directors;

a requirement that no member of our board of directors may be removed from office by our stockholders except for cause and, in addition to any other vote required by law, upon the approval of not less than 66 23% of all outstanding shares of our voting stock then entitled to vote in the election of directors;

a requirement of approval of not less than 66 23% of all outstanding shares of our voting stock to amend any bylaws by stockholder action or to amend specific provisions of our certificate of incorporation; and

the authorityability of the board of directors to issue preferred stock on terms determined by the board of directors without stockholder approval and which preferred stock may include rights superior to the rights of the holders of common stock.

approval. In addition, because we are incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General Corporate Law,DGCL, which may prohibit certain business combinations withprohibits stockholders owning in excess of 15% or more of our outstanding voting stock from merging or combining with us. Although we believe these provisions collectively will provide for an opportunity to receive higher bids by requiring potential acquirers to negotiate with our board of directors, they would apply even if the offer may be considered beneficial by some stockholders. In addition, these provisions may frustrate or prevent any attempts by our stockholders to replace or remove then current management by making it more difficult for stockholders to replace members of the board of directors, which is responsible for appointing the members of management.

Our pre-Merger net operating loss carryforwards and certain other tax attributes may be subject to limitations. The pre-Merger net operating loss carryforwards and certain other tax attributes of us may also be subject to limitations as a result of ownership changes resulting from the Merger.

In general, a corporation that undergoes an “ownership change” as defined in Section 382 of the Code, is subject to limitations on our ability to utilize our pre-change net operating loss carryforwards to offset future taxable income. In general, an ownership change occurs if the aggregate stock ownership of certain stockholders, generally stockholders beneficially owning five percent or more of a corporation’s common stock, applying certain look-through and aggregation rules, increases by more than 50 percentage points over such stockholders’ lowest percentage ownership during the testing period, generally three years. We may have experienced ownership changes in the past and we may experience ownership changes in the future. In addition, the closing of the merger may result in an ownership change for us, which could result in limitations on the use of our federal and state net

operating loss carryforwards of $145.5 million and $76.4 million, respectively, in addition to our federal, including orphan drug, and state research credit carryforwards of $8.3 million and $2.4 million, respectively. It is possible that our net operating loss carryforwards and certain other tax attributes may also be subject to limitation as a result of ownership changes in the past and/or the closing of the Merger. Consequently, even if we achieve profitability, we may not be able to utilize a material portion of our net operating loss carryforwards and certain other tax attributes, which could have a material adverse effect on cash flow and results of operations.

Our failure to meet the continued listing requirements of the Nasdaq could result in a delisting of our common stock.

We must continue to satisfy the Nasdaq Capital Market’s continued listing requirements, including, among other things, the corporate governance requirements and the minimum closing bid price requirement. If we fail to satisfy the continued listing requirements of the Nasdaq, Nasdaq may take steps to delist our common stock. These anti-takeover provisionsSuch a delisting would likely have a negative effect on the price of our common stock and other provisionswould impair your ability to sell or purchase our common stock when you wish to do so.

On May 29, 2019, Conatus received a letter from the Nasdaq staff indicating that, for the prior thirty consecutive business days, the bid price for its common stock had closed below the minimum $1.00 per share requirement for continued listing on the Nasdaq Global Market under Nasdaq Listing Rule 5450(a)(1).

Conatus filed an application to transfer the listing of our common stock from the Nasdaq Global Market to the Nasdaq Capital Market. On November 27, 2019, the application was approved by Nasdaq and a result, Conatus was granted an additional 180-day grace period, until May 25, 2020, to regain compliance with the minimum $1.00 per share requirement for continued listing on the Nasdaq Capital Market under Nasdaq Listing Rule 5810(c)(3)(A). Subsequently, based on an immediately effective rule change with the SEC on April 16, 2020, the deadline to regain compliance was extended to August 10, 2020.

On May 26, 2020, in connection with, and prior to the completion of, the Merger, we effected a reverse stock split of our common stock, which enabled us to regain compliance with the minimum closing bid price requirement. Even though we have regained compliance with the Nasdaq Capital Market’s minimum closing bid price requirement, there is no guarantee that we will remain in compliance with such listing requirements in the future.

In the event of a delisting, we can provide no assurance that any action taken by us to restore compliance with listing requirements would allow our common stock to become listed again, stabilize the market price or improve the liquidity of our common stock, prevent our common stock from dropping below the Nasdaq minimum bid price requirement or prevent future non-compliance with Nasdaq’s listing requirements. Delisting from the Nasdaq Capital Market or any Nasdaq market could make trading our common stock more difficult for investors, potentially leading to declines in our amendedshare price and restated certificateliquidity. Without a Nasdaq market listing, stockholders may have a difficult time getting a quote for the sale or purchase of incorporationour stock, the sale or purchase of our stock would likely be made more difficult and amendedthe trading volume and restated bylawsliquidity of our stock could decline. Delisting from Nasdaq could also result in negative publicity and could also make it more difficult for stockholders or potential acquirorsus to obtain controlraise additional capital. The absence of such a listing may adversely affect the acceptance of our boardcommon stock as currency or the value accorded by other parties. Further, if we are delisted, we would also incur additional costs under state blue sky laws in connection with any sales of directors or initiate actions that are opposed byour securities. These requirements could severely limit the then-current boardmarket liquidity of directorsour common stock and could also delay or impede a merger, tender offer or proxy contest involvingthe ability of our company. These provisions could also discourage proxy contests and make it more difficult for you and other stockholders to elect directors of your choosing or cause us to take other corporate actions you desire. Any delay or preventionsell our common stock in the secondary market.

Sales of a changesubstantial number of control transactionshares of our common stock by our stockholders in the public market could cause our stock price to fall.

Sales of a substantial number of shares of our common stock in the public market or changes in our board of directorsthe perception that these sales might occur could causesignificantly reduce the market price of our common stock and impair our ability to decline.

If securities or industry analysts do not publish research or publish inaccurate or unfavorable research aboutraise adequate capital through the sale of additional equity securities. We are unable to predict the effect that such sales may have on the prevailing market price of our business, our stock price and trading volume could decline.

The trading market forcommon stock. As of September 30, 2020, we have outstanding warrants to purchase an aggregate of approximately 4,929 shares of our common stock, will dependand options to purchase an aggregate of approximately 1.5 million shares of our common stock, which, if exercised, may further increase the number of shares of our common stock outstanding and the number of shares eligible for resale in partthe public market, unless such shares are subject to a lock-up agreement.

Our internal control over financial reporting may not meet the standards required by Section 404 of the Sarbanes-Oxley Act, and failure to achieve and maintain effective internal control over financial reporting in accordance with Section 404 of the Sarbanes-Oxley Act, could have a material adverse effect on our business and share price.

Our management is required to report on the researcheffectiveness of our internal control over financial reporting. The rules governing the standards that must be met for our management to assess our internal control over financial reporting are complex and require significant documentation, testing and possible remediation.

We cannot assure you that there will not be material weaknesses or significant deficiencies in our internal control over financial reporting in the future. Any failure to maintain internal control over financial reporting could severely inhibit our ability to accurately report our financial condition, results of operations or cash flows. If we are unable to conclude that our internal control over financial reporting is effective, or if our independent registered public accounting firm determines we have a material weakness or significant deficiency in our internal control over financial reporting once that firm begins our Section 404 reviews, investors may lose confidence in the accuracy and completeness of our financial reports, that securitiesthe market price of our common stock could decline, and we could be subject to sanctions or industry analysts publish aboutinvestigations by Nasdaq, the SEC or other regulatory authorities. Failure to remedy any material weakness in our internal control over financial reporting, or to implement or maintain other effective control systems required of public companies, could also restrict our future access to the capital markets.

Our executive officers, directors and principal stockholders own a significant percentage of our stock and, if they choose to act together, will be able to exert control or significantly influence over matters subject to stockholder approval.

As of September 30, 2020, our executive officers, directors and greater than 5% stockholders, in the aggregate, own approximately 50.0% of our outstanding common stock. As a result, such persons or their appointees to our board of directors, acting together, will be able to exert control or significantly influence over all matters submitted to our board of directors or stockholders for approval, including the appointment of our management, the election and removal of directors and approval of any significant transaction, as well as our management and business affairs. This concentration of ownership may have the effect of delaying, deferring or preventing a change in control, impeding a merger, consolidation, takeover or other business combination involving us, or our business. Securities and industry analysts do not currently, and may never, publish research on our company. If no securitiesdiscouraging a potential acquiror from making a tender offer or industry analysts commence coverageotherwise attempting to obtain control of our company, the trading price for our stockbusiness, even if such a transaction would likely be negatively impacted. In the event securities or industry analysts initiate coverage, if one or more of the analysts who covers us downgrades our stock or publishes inaccurate or unfavorable research about our business, our stock price may decline. If one or more of these analysts ceases coverage of our company or fails to publish reports on us regularly, demand for our stock could decrease, which might cause our stock price and trading volume to decline.benefit other stockholders.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus contains forward-looking statements. All“forward-looking” statements other thanwithin the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Any statements contained herein that are not of historical facts contained in this prospectus, includingmay be deemed to be forward-looking statements. In some cases, you can identify these statements by words such as such as “anticipates,” “believes,” “plans,” “expects,” “projects,” “future,” “intends,” “may,” “should,” “could,” “estimates,” “predicts,” “potential,” “continue,” “guidance,” and other similar expressions that are predictions of or indicate future events and future trends. These forward-looking statements include, but are not limited to, statements about:

any impact of the COVID-19 pandemic, or responses to the pandemic, on our business, collaborations, clinical trials or personnel;

our expectations regarding the potential benefits of our strategy and technology;

our expectations regarding the operation of our product candidates, collaborations and related benefits;

our beliefs regarding our future resultsindustry;

our beliefs regarding the success, cost and timing of operationsour product candidate development and financial position, business strategy, prospective products, product approvals, researchcollaboration activities and development costs, timing and likelihood of success, plans and objectives of management for future operations,current and future resultsclinical trials and studies;

our beliefs regarding the potential markets for our product candidates, collaborations and our and our collaborators’ ability to serve those markets;

our ability to attract and retain key personnel;

our ability to obtain funding for our operations, including funding necessary to complete further development and any commercialization of anticipated products are forward-looking statements. These statements involve knownour product candidates;

regulatory developments in the United States, or U.S., and unknown risks, uncertainties and other important factors that may causeforeign countries, with respect to our actual results, performance or achievementsproduct candidates;

our expected use of the net proceeds to be materially differentus from any future results, performance or achievements expressed or implied by the forward-looking statements.this offering.    

In some cases, you can identify forward-looking statements by termsterminology such as “may,” “will,” “should,” “expect,” “plan,” “anticipate,” “could,” “intend,“expects,“target,“intends,“project,“plans,“contemplates,“anticipates,” “believes,” “estimates,” “predicts,” “potential” or “continue”“potential,” “continue,” or the negative of these terms or other similar expressions. Thecomparable terminology. These forward-looking statements are only predictions. These forward-looking statements are based on current expectations, estimates, forecasts, and projections about our business and the industry in which we operate and management’s beliefs and assumptions and are not guarantees of future performance or developments and involve known and unknown risks, uncertainties, and other factors that are in some cases beyond our control. As a result, any or all of our forward-looking statements in this prospectus are only predictions. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trendsmay turn out to be inaccurate. Factors that we believe maycould materially affect our business operations and financial performance and condition include, but are not limited to, those risks and results of operations. Theseuncertainties described herein under “Risk Factors”. You are urged to consider these factors carefully in evaluating the forward-looking statements speak onlyand are cautioned not to place undue reliance on the forward-looking statements. The forward-looking statements are based on information available to us as of the date of this prospectus. Unless required by law, we do not intend to publicly update or revise any forward-looking statements to reflect new information or future events or otherwise.

These statements are based upon information available to us as of the date of this prospectus, and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements.

USE OF PROCEEDS

We estimate that the net proceeds from this offering will be approximately $10.6 million, assuming a combined public offering price per share of common stock and accompanying common warrant of $1.15, the closing sale price per share of our common stock on the Nasdaq Capital Market on December 28, 2020 after deducting the Placement Agent fees and estimated offering expenses payable by us, and assuming no sale of any fixed combinations of pre-funded warrants and warrants offered hereunder. If the common warrants are exercised in full for cash, the estimated net proceeds will increase to $23.3 million.

We intend to use the net proceeds from this offering for working capital and general corporate purposes, which may include continued development of products for our CCM, hECM and HSC programs, further research and development, capital expenditures and general and administrative expenses. We also intend to use $350,000 of the net proceeds of the offering to pay Canaccord Genuity LLC, or Canaccord, to fulfill the final payment obligation required pursuant to a prior engagement letter entered into between us and Canaccord which such payment is triggered based on the completion of this offering.

Our management will retain broad discretion over the allocation of the net proceeds from the sale of shares of common stock in this offering. The amounts and timing of our actual expenditures will depend upon numerous factors, including: the timing and extent of spending on our research and development efforts; our ability to enter into and maintain collaboration, licensing, commercialization and other arrangements and the terms and timing of such arrangements; the scope, rate of progress, results and cost of our clinical trials, preclinical testing and other related activities; the emergence of competing technologies or other adverse market developments; the time and costs involved in seeking and obtaining regulatory and marketing approvals in multiple jurisdictions for our product candidates that successfully complete clinical trials; the cost of preparing, filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights; the introduction of new product candidates and the number and characteristics of product candidates that we pursue. Investors will be relying on the judgment of our management, who will have broad discretion regarding the application of the proceeds of this offering and could spend the proceeds in ways with which you may not agree, and the proceeds may not be invested in a manner that yields a favorable or any return.

MARKET FOR OUR COMMON STOCK AND RELATED STOCKHOLDER MATTERS

Market Price for our Common Stock

Our common stock is quoted on the Nasdaq Capital Market under the symbol “HSTO”. As of December 28, 2020, there were approximately 100 stockholders of record holding 15,030,757 shares of our common stock. This number does not include an indeterminate number of stockholders whose shares are held by brokers in street name.

Dividend Policy

We have never paid any cash dividends on our common stock and do not anticipate paying any cash dividends on our common stock in the foreseeable future. We intend to retain future earnings to fund ongoing operations and future capital requirements of our business. Any future determination to pay cash dividends will be at the discretion of our Board and will be dependent upon our financial condition, results of operations, capital requirements and such other factors as our Board deems relevant. Our ability to pay cash dividends is subject to a numberlimitations imposed by state law.

CAPITALIZATION

The following table sets forth our capitalization as of risks, uncertaintiesSeptember 30, 2020:

on an actual basis; and assumptions described under

on an as adjusted basis to reflect: (x) the sectionsissuance and sale by us of 10,434,782 shares of common stock and common warrants to purchase up to 10,434,782 shares of common stock at an assumed combined public offering price of $1.15 per share and related warrant, the closing sale price per share of our common stock on the Nasdaq Capital Market on December 28, 2020, and the October 2020 issuance of 20,000 shares and the November 2020 offering of 2,522,784 shares of our common stock, assuming no sale of any pre-funded warrants in this prospectus entitled “Risk Factors”offering, no exercise of the common or Placement Agent warrants being offered in this offering, warrants to purchase 2,018,227 shares of our common stock from the November 2020 offering, and after deducting the Placement Agent fees and estimated offering expenses payable by us.

You should consider this table in conjunction with “Use of Proceeds” above as well as our “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere in this prospectus. The events and circumstances reflected in our forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements. Moreover, we operate in an evolving environment. New risk factors and uncertainties may emerge from time to time, and it is not possible for management to predict all risk factors and uncertainties. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise. The forward-looking statements contained in this prospectus are excluded from the safe harbor protection provided by the Private Securities Litigation Reform Act of 1995 and Section 27A of the Securities Act of 1933, as amended.

This prospectus also contains estimates and other statistical data made by independent parties and by us relating to market size and growth and other data about our industry. This data involves a number of assumptions and limitations, and you are cautioned not to give undue weight to such estimates. In addition, projections, assumptions and estimates of our future performance and the future performance of the markets in which we operate are necessarily subject to a high degree of uncertainty and risk.

USE OF PROCEEDS

We estimate that the net proceeds to us from the sale of the common stock that we are offering will be approximately $million (or $             million if the underwriters exercise their option to purchase additional shares in full), assuming an initial public offering price of $per share, the midpoint of the price range listed on the cover page of this prospectus, and after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us. Each $1.00 increase (decrease) in the assumed initial public offering price of $per share would increase (decrease) the net proceeds to us from this offering by approximately $million, assuming the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us. We may also increase or decrease the number of shares we are offering. Each increase (decrease) of 1.0 million in the number of shares we are offering would increase (decrease) the net proceeds to us from this offering, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us, by approximately $             million, assuming the assumed initial public offering price stays the same.

The principal purposes of this offering are to obtain additional capital to support our operations, to create a public market for our common stock and to facilitate our future access to the public equity markets. We intend to use approximately $             million of the net proceeds from this offering to fund the clinical development of emricasan and the remainder to fund working capital and for general corporate purposes.

We believe that the net proceeds from this offering and our existing cash and cash equivalents, together with interest thereon, will be sufficient to fund our operations for at least the next 18 months after the date of this prospectus, although there can be no assurance in that regard. In particular, we expect that the net proceeds from this offering will allow us to complete our planned Phase 2b ACLF trial, Phase 3 HCV-POLT trial (currently designated a Phase 3 registration study in the European Union and a Phase 2b study in the United States) and Phase 2b CLF trial. We will need to raise additional funds to complete additional clinical trials of emricasan, to fund regulatory filings for emricasan in the United States and the European Union and for potential commercialization of emricasan.

The amounts and timing of our actual expenditures will depend on numerous factors, including the progress of our clinical trials and other development efforts for emricasan and other factors described under “Risk Factors” in this prospectus, as well as the amount of cash used in our operations. We therefore cannot estimate the amount of net proceeds to be used for the purposes described above. We may find it necessary or advisable to use the net proceeds for other purposes, and we will have broad discretion in the application of the net proceeds. Pending the uses described above, we plan to invest the net proceeds from this offering in short- and intermediate-term, interest-bearing obligations, investment-grade instruments, certificates of deposit or direct or guaranteed obligations of the U.S. government.

DIVIDEND POLICY

We have never declared or paid any cash dividends on our capital stock. We intend to retain future earnings, if any, to finance the operation of our business and do not anticipate paying any cash dividends in the foreseeable future. Any future determination related to our dividend policy will be made at the discretion of our board of directors after considering our financial condition, results of operations, capital requirements, business prospects and other factors the board of directors deems relevant, and subject to the restrictions contained in any future financing instruments. In addition, our ability to pay cash dividends is currently prohibited by the terms of a promissory note in the principal amount of $1.0 million issued by us to Pfizer Inc. in July 2010.

CAPITALIZATION

The following table sets forth our cash, cash equivalents and short-term investments and our capitalization as of March 31, 2013 as follows:

on an actual basis;

on a pro forma basis to reflect (1) the issuance of $1.0 million in aggregate principal amount of 2013 Notes in May 2013 and the automatic conversion of the 2013 Notes (including accrued interest thereon), assuming an initial public offering price of $             per share (the midpoint of the price range listed on the cover page of this prospectus) and assuming the conversion occurs on                      , 2013 (the expected closing date of this offering); (2) the conversion of 15,576,789 shares of our convertible preferred stock into 1,557,678 shares of common stock in May 2013 and the automatic conversion of all outstanding shares of our convertible preferred stock into 63,334,653 shares of common stock immediately prior to the closing of this offering and the resultant reclassification of our convertible preferred stock warrant liability to stockholders’ equity (deficit) in connection with such conversion, (3) the issuance of                      shares of common stock as a result of the expected net exercise of outstanding preferred stock warrants, or the 2010 Warrants, in connection with the completion of this offering, assuming an initial public offering price of $             per share (the midpoint of the price range listed on the cover page of this prospectus), which 2010 Warrants will terminate if unexercised prior to the completion of this offering, and (4) the filing of our amended and restated certificate of incorporation immediately prior to the closing of this offering; and

on a pro forma as adjusted basis to give further effect to our issuance and sale of                     shares of common stock in this offering at an assumed initial public offering price of $per share, the midpoint of the price range listed on the cover page of this prospectus, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us.

The pro forma and pro forma as adjusted information below is illustrative only, and our capitalization following the closing of this offering will be adjusted based on the actual initial public offering price and other terms of this offering determined at pricing. You should read this information in conjunction with our financial statements and the related notes to those financial statements for year ended December 31, 2019 included in this prospectus and the “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section and other financial information containedelsewhere in this prospectus.

 

   As of March 31, 2013 
   Actual  Pro Forma   Pro Forma
  As  Adjusted(1)  
 
      (unaudited) 

Cash, cash equivalents and short-term investments

  $5,095,486   $                    $                  
  

 

 

  

 

 

   

 

 

 

Convertible preferred stock warrant liability

  $707,509   $     

Note Payable

   1,000,000     

Series A and B convertible preferred stock, $0.0001 par value; 95,127,538 shares authorized, 78,911,442 shares issued and outstanding, actual; no shares authorized, issued or outstanding, pro forma and pro forma adjusted

   63,908,372     

Common stock, $0.0001 par value, 120,000,000 shares authorized, 11,031,500 shares issued and 8,794,844 outstanding, excluding 2,236,656 shares subject to repurchase, actual; (200,000,000) shares authorized, pro forma and proforma as adjusted;              shares issued and outstanding pro forma;              shares issued and outstanding, pro forma as adjusted

   879     

Preferred stock, $0.0001 par value, no shares authorized, issued and outstanding, actual; 10,000,000 shares authorized, pro forma and proforma as adjusted; no shares issued or outstanding, pro forma and pro forma adjusted

        

Additional Paid in Capital

        

Accumulated other comprehensive income

        

Deficit accumulated during development stage

   (61,111,558   
  

 

 

  

 

 

   

 

 

 

Total stockholders’ (deficit)/equity

   (61,110,679   
  

 

 

  

 

 

   

 

 

 

Total Capitalization

  $4,505,202   $     $   
  

 

 

  

 

 

   

 

 

 

   Actual  As Adjusted(1) 

Cash and Cash Equivalents

   6,649,000   21,041,021 
  

 

 

  

 

 

 

Stockholder’s Equity:

   

Common stock, $0.01 per share; 200,000,000 shares authorized; 12,487,973 shares issued and outstanding

  $1,000  $2,547 

Additional paid-in capital

   66,638,000   81,028,474 

Accumulated deficit

   (59,194,000  (59,194,000
  

 

 

  

 

 

 

Total stockholder’s equity

   7,445,000   21,837,021 
  

 

 

  

 

 

 

Total capitalization

   7,445,000   21,837,021 
  

 

 

  

 

 

 

(1)

Each $1.00 increase (decrease) in the assumed initial public offering price of $             per share, the midpoint of the price range listed on the cover page of this prospectus, would increase (decrease) the pro forma as adjusted amount of each of cash, cash equivalents and short-term investments, total stockholders’ equity (deficit) and total capitalization by approximately$            , assuming that the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us. Similarly, each increase (decrease) of 1.0 million shares in the number of shares offered by us at the assumed initial public offering price per share, the midpoint of the price range listed on the cover page of this prospectus, would increase (decrease) the pro forma as adjusted amount of each of cash, cash equivalents and short-term investments, total stockholders’ equity (deficit) and total capitalization by approximately $            .

The number of sharesA $0.10 increase or decrease in the table above excludes:

4,899,000 shares of common stock issuable upon exercise of stock options outstanding as of March 31, 2013, at a weighted average exercise price of $0.12 per share;

                     shares of our common stock reserved for future issuance under our 2013 equity incentive plan, or the 2013 plan, which will become effective immediately prior to the closing of this offering (including 69,500 shares of common stock reserved for future grant or issuance under our 2006 equity incentive plan, which shares will be added to the shares reserved under the 2013 plan upon its effectiveness);

                     shares of common stock reserved for future issuance under our 2013 employee stock purchase plan, which will become effective upon the closing of this offering; and

                     shares of common stock issuable upon exercise of warrants we issued in May 2013, at an exercise price of $            per share.

DILUTION

If you invest in our common stock in this offering, your ownership interest will be immediately diluted to the extent of the difference between the initialassumed combined public offering price per share and the pro forma as adjusted net tangible book value per share of our common stock after this offering.

As of March 31, 2013, we had a historical net tangible book value of $(61.1) million, or $(6.95) per share of common stock. Our historical net tangible book value per share represents total tangible assets less total liabilities and convertible preferred stock, divided by the number of shares of common stock outstanding at March 31, 2013.

On a pro forma basis, after giving effect to (1) the issuanceand accompanying common warrant would increase or decrease each of $1.0 million in aggregate principal amount of 2013 Notes in May 2013 and the automatic conversion of the 2013 Notes (including accrued interest thereon), assuming an initial public offering price of $ per share (the midpoint of the price range listed on the cover page of this prospectus) and assuming the conversion occurs on , 2013 (the expected closing date of this offering); (2) the conversion of 15,576,789 shares of our convertible preferred stock into 1,557,678 shares ofcash, common stock in May 2013 and the automatic conversion of all outstanding shares of our convertible preferred stock into 63,334,653 shares of our common stock immediately prior to the closing of this offering and the reclassification of our convertible preferred stock warrant liability to additional paid-in capital, a component oftotal stockholders’ equity (deficit), and (3) the issuance of                      shares of common stock as a result of the expected net exercise of outstanding warrants, or the 2010 Warrants, in connection with the completion of this offering, assumingtotal capitalization on an initial public offering price of $             per share (the midpoint of the price range listed on the cover page of this prospectus), which 2010 Warrants will terminate if unexercised prior to the completion of this offering, our pro forma net tangible book value (deficit) as of March 31, 2013 would have been approximately $            , or approximately $             per share of our common stock.

After giving further effect to the sale of                      shares of common stock that we are offering at an assumed initial public offering price of $             per share, the midpoint of the price range listed on the cover page of this prospectus, and after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us, our pro forma as adjusted net tangible book value as of March 31, 2013 would have been approximately $             million, or approximately $             per share. This amount represents an immediate increase in pro forma net tangible book value of $             per share to our existing stockholders and an immediate dilution in pro forma net tangible book value of approximately $             per share to new investors purchasing shares of common stock in this offering.

Dilution per share to new investors is determined by subtracting pro forma as adjusted net tangible book value per share after this offering from the initial public offering price per share paid by new investors. The following table illustrates this dilution (without giving effect to any exercise by the underwriters of their option to purchase additional shares):

Assumed initial public offering price per share

   $              

Historical net tangible book value (deficit) per share as of March 31, 2013

  $(6.95 

Pro forma increase in historical net tangible book value per share attributable to the pro forma transactions described in the preceding paragraphs

   
  

 

 

  

Pro forma net tangible book value per share as of March 31, 2013

  $    

Increase in pro forma net tangible book value per share attributable to this offering

   
  

 

 

  

Pro forma as adjusted net tangible book value per share after this offering

   
   

 

 

 

Dilution per share to new investor in this offering

   $   
   

 

 

 

Each $1.00 increase (decrease) in the assumed initial public offering price of $             per share, the midpoint of the price range listed on the cover page of this prospectus, would increase (decrease) the pro forma as adjusted net tangible book value per share after this offeringbasis by approximately $            , and dilution in pro forma net tangible book value per share to new investors by approximately $            ,$960 thousand, assuming that the number of shares,pre-funded warrants and common warrants offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting the

estimated underwriting discounts Placement Agent fees and commissions and the estimated offering expenses payable by us. EachAn increase (decrease)or decrease of 1.01 million shares in the number of shares of common stock (or common stock underlying pre-funded warrants) and accompanying common warrants offered by us, as set forth on the cover page of this prospectus, would increase (decrease)or decrease each of cash, common stock and additional paid-in capital, total stockholders’ equity and total capitalization on an as adjusted basis by approximately $1.1 million, assuming no change in the assumed combined public offering price per share of common stock and related warrant after deducting the Placement Agent fees and estimated offering expenses payable by us.

The above discussion and table are based on 12,487,973 shares outstanding as of September 30, 2020. The discussion and table do not include, as of that date:

4,929 shares of common stock issuable upon the exercise of a warrants outstanding as of September 30, 2020 at a weighted average exercise price of $37.07 per share;

1,499,123 shares of common stock issuable upon the exercise of options outstanding as of September 30, 2020 at a weighted average exercise price of $5.92 per share;

725,881 shares of common stock reserved for future issuance Histogen Inc. 2020 Incentive Award Plan, and any future automatic increase in shares reserved for issuance under such plan; and

2,018,227 shares of our common stock issuable upon exercise of warrants issued subsequent to September 30, 2020 in a concurrent private placement offering, with H.C. Wainwright & Co., LLC acting as placement agent at a weighted average exercise price of $1.73.

Except as otherwise indicated herein, all information in this prospectus assumes no sale of pre-funded warrants, which, if sold, would reduce the number of shares of common stock that we are offering on a one-for-one basis, and no exercise of options issued under our equity incentive plan, warrants described above, or warrants being issued in this offering, including the Placement Agent Warrants.

DILUTION

If you invest in our common stock in this offering, your ownership interest will be diluted immediately to the extent of the difference between the assumed combined public offering price per share of common stock and related warrant and the as adjusted, net tangible book value per share of common stock immediately after this offering.

Our net tangible book value is the amount of our total tangible assets less our total liabilities. Our net tangible book value as of September 30, 2020 was $6.5 million, or approximately $0.52 per share. After giving effect to: (x) the October 2020 issuance of 20,000 shares the October 2020 issuance of 20,000 shares the November 2020 offering of 2,522,784 shares of our common stock and warrants to purchase 2,018,227 shares of our common stock for net proceeds of $3.8 million; and (y) the assumed sale of 10,434,782 shares of our common stock and warrants to purchase up to 10,434,782 shares of common stock at an assumed combined public offering price of $1.15 per share and related warrant, the closing sale price per share of our common stock on the Nasdaq Capital Market on December 28, 2020, assuming no sale of any pre-funded warrants in this offering, no exercise of the warrants being offered in this offering or the November 2020 offering, and after deducting the Placement Agent fees and commissions and estimated offering expenses payable by us, our pro forma, as adjusted, net tangible book value per share after this offering byas of September 30, 2020, would have been approximately $$21 million, or approximately $0.82 per share. This represents an immediate increase in net tangible book value per share of $0.30 to existing stockholders and decrease (increase) thean immediate dilution to investors participating in this offering byof approximately $$0.33 per share assuming that the assumed initial public offering price remains the same, and after deducting the estimated underwriting discounts and commissions and the estimated offering expenses payable by us.

If the underwriters exercise their option to purchase additionalnew investors purchasing shares of our common stock in full in this offering, the pro forma as adjusted net tangible book value after the offering would be $             per share, the increase in pro forma net tangible book value per share to existing stockholders would be $             per share and the dilutionoffering.

Dilution per share to new investors would be $             per share, in each case assuming an initial public offering price of $             per share, the midpoint of the price range listed on the cover page of this prospectus.

The following table summarizes on the pro forma as adjusted basis described above, as of March 31, 2013, the differences between the number of shares purchased from us, the total consideration paid to us in cash and the average price per share paidis determined by existing stockholders for shares issued prior to this offering and the price to be paid by new investors in this offering. The calculation below is based on the assumed initial public offering price of $             per share, the midpoint of the price range listed on the cover page of the prospectus, before deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us.

   Shares Purchased  Total Consideration  Average Price
Per Share
 
   

Number

  Percent  Amount   Percent  

Existing stockholders

              $                          $              

New investors

        
  

 

  

 

 

  

 

 

   

 

 

  

Total

     100    100 
  

 

  

 

 

  

 

 

   

 

 

  

The foregoing tables and calculations exclude:

4,899,000 shares of common stock issuable upon exercise of          stock options outstanding as of March 31, 2013, at a weighted exercise price of $0.12 per share;

                     shares of our common stock reserved for future issuance under our 2013 equity incentive plan, or the 2013 plan, which will become effective immediately prior to the closing of this offering (including 69,500 shares of common stock reserved for future grant or issuance under our 2006 equity incentive plan, which shares will be added to the shares reserved under the 2013 plan upon its effectiveness);

                     shares of common stock reserved for future issuance under our 2013 employee stock purchase plan, which will become effective upon the closing of this offering; and

                    shares of common stock issuable upon exercise of warrants we issued in May 2013, at an exercise price of $             per share.

To the extent any outstanding options or warrants are exercised, there will be further dilution to new investors. If all of such outstanding options and warrants had been exercised as of March 31, 2013,subtracting the pro forma, as adjusted, net tangible book value per share after this offering from the combined public offering price per share and related warrant paid by new investors.

The following table illustrates this per share dilution:

Assumed combined public offering price per share and related warrant

$1.15

Net tangible book value per share as of September 30, 2020

$0.52

Increase in as adjusted net tangible book value per share after this offering

$0.30

Pro forma, as adjusted, net tangible book value per share after giving effect to this offering and the November 2020 offering

$0.82

Dilution per share to new investors

$0.33

A $0.10 increase (decrease) in the assumed combined public offering price per share of common stock and related warrant would be $            increase (decrease) the pro forma, as adjusted, net tangible book value per share by $0.04 ($0.04), and totalthe dilution per share to new investors in this offering by $0.04 ($0.04), assuming the number of common stock, pre-funded warrants and warrants offered by us, as set forth on the cover page of this prospectus, remain the same and after deducting the Placement Agent fees and commissions and estimated offering expenses payable by us.

Conversely, an increase (decrease) of 1 million in the number of shares of common stock (or common stock underlying pre-funded warrants) and related warrants offered by us, as set forth on the cover page of this prospectus, would be $            .increase (decrease) the pro forma, as adjusted, net tangible book value by approximately $0.01 ($0.01) per share and increase (decrease) the dilution to investors participating in this offering by approximately $0.01 ($0.01) per share, assuming the assumed combined public offering price per share of common stock and related warrant remains the same and after deducting the Placement Agent fees and commissions and estimated offering expenses payable by us.

If

The foregoing discussion and table do not take into account further dilution to new investors that could occur upon the underwriters exercise their optionof outstanding warrants having a per share exercise or conversion price less than the per share offering price to purchasethe public in this offering.

We may choose to raise additional capital due to market conditions or strategic considerations even if we believe we have sufficient funds for our current or future operating plans. To the extent that additional capital is raised through the sale of equity or convertible debt securities, the issuance of these securities could result in further dilution to our stockholders.

The above discussion and table are based on 12,487,973 shares outstanding as of September 30, 2020. The discussion and table do not include, as of that date:

4,929 shares of common stock issuable upon the exercise of a warrants outstanding as of September 30, 2020 at a weighted average exercise price of $37.07 per share;

1,499,123 shares of common stock issuable upon the exercise of options outstanding as of September 30, 2020 at a weighted average exercise price of $5.92 per share;

725,881 shares of common stock reserved for future issuance Histogen Inc. 2020 Incentive Award Plan, and any future automatic increase in shares reserved for issuance under such plan; and

2,018,227 shares of our common stock issuable upon exercise of warrants issued subsequent to September 30, 2020 in full:a concurrent private placement offering, with H.C. Wainwright & Co., LLC acting as placement agent at a weighted average exercise price of $1.73.

Except as otherwise indicated herein, all information in this prospectus assumes no sale of pre-funded warrants, which, if sold, would reduce the percentagenumber of shares of common stock held by existing stockholders will decrease to approximately     %that we are offering on a one-for-one basis, and no exercise of the total number of shares ofoptions issued under our common stock outstanding after this offering; and

the number of shares held by new investors will increase to             ,equity incentive plan, warrants described above, or approximately     % of the total number of shares of our common stock outstanding after this offering.

SELECTED CONSOLIDATED FINANCIAL DATA

You should read the following selected consolidated financial data in conjunction with our audited consolidated financial statements and the related notes thereto included elsewherewarrants being issued in this prospectus and inoffering, including the section of this prospectus entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations”.Placement Agent Warrants.

We have derived the consolidated statements of operations data for the years ended December 31, 2011 and 2012 and the consolidated balance sheet data as of December 31, 2011 and 2012 from our audited consolidated financial statements included elsewhere in this prospectus. The consolidated statements of operations data for the three months ended March 31, 2013 and 2012 and for the period from July 13, 2005 (inception) to March 31, 2013 and the balance sheet data as of March 31, 2013 have been derived from our unaudited consolidated financial statements included elsewhere in this prospectus and have been prepared on the same basis as the audited consolidated financial statements. In the opinion of the management, the unaudited data reflects all adjustments, consisting of normal and recurring adjustments, necessary for a fair presentation of results as of and for these periods. Our historical results for any prior period are not indicative of the results expected in any future period.

  Year Ended December 31,  Three Months Ended March 31,    Period from July 13,  
2005 (Inception) to
March 31, 2013
 
  2011  2012          2012                  2013          
        Unaudited    

Consolidated Statement of Operations Data:

     

Operating expenses

     

Research and development

 $9,486,619   $5,528,106   $1,161,630   $967,778   $41,792,926  

General and administrative

  2,874,507    3,086,479    750,160    748,796    18,865,388  
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Total operating expenses

  12,361,126    8,614,585    1,911,790    1,716,574    60,658,314  

Other income (expense)

     

Interest income

  28,274    25,547    8,330    132    1,358,882  

Interest expense

  (113,836  (70,000  (17,500  (17,500  (792,329

Other income (expense)

  (4,439  1,358    9,254    (15,677  225,722  

Other financing income (expense)

  454,547    (91,559  9,100    (547,164  (1,238,253
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Total other income (expense)

  364,546    (134,654  9,184    (580,209  (445,978
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Net loss

 $(11,996,580 $(8,749,239 $(1,902,606 $(2,296,783 $(61,104,292
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Net loss per share attributable to common stockholders, basic and diluted(1)

 $(1.44 $(1.04 $(0.23 $(0.26 
 

 

 

  

 

 

  

 

 

  

 

 

  

Weighted average shares outstanding used in computing net loss per share attributable to common stockholders, basic and diluted(1)

  8,346,134    8,389,885    8,350,000    8,749,450   
 

 

 

  

 

 

  

 

 

  

 

 

  

Pro forma net loss per share attributable to common stockholders, basic and diluted (unaudited)(1)

     
  

 

 

   

 

 

  

Weighted average shares outstanding used in computing pro forma net loss per share attributable to common stockholders, basic and diluted (unaudited)(1)

     
  

 

 

   

 

 

  

(1)

See Note 2 to our audited consolidated financial statements included elsewhere in this prospectus for an explanation of the method used to calculate the historical and pro forma net loss per share, basic and diluted, and the number of shares used in the computation of the per share amounts.

   As of December 31,  As of March 31, 2013 
   2011  2012  
         (unaudited) 

Consolidated Balance Sheet Data:

  

Cash, cash equivalents and short-term investments

  $16,758,038   $8,025,564   $5,095,486  

Working capital

   15,202,374    6,688,847    4,438,000  

Total assets

   16,958,880    8,145,747    5,246,020  

Convertible preferred stock warrant liability

   68,786    160,345    707,509  

Note payable

   1,000,000    1,000,000    1,000,000  

Convertible preferred stock

   63,908,372    63,908,372    63,908,372  

Total stockholders’ deficit

   (49,739,275  (58,335,871  (61,110,679

MANAGEMENT’S DISCUSSION AND ANALYSIS OF

FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

You should read theThe following discussion and analysis of our financial condition and results of operations togethershould be read in conjunction with (i) our auditedunaudited condensed consolidated financial statements and the related notes and other financial informationthereto included elsewhere in this prospectus. Someprospectus for the period ended September 30, 2020. As further described in Note 1 – Description of the information containedBusiness and Note 6 – Merger in this discussion and analysis or set forthour condensed consolidated financial statements included elsewhere in this prospectus, includingPrivate Histogen was determined to be the accounting acquirer in the Merger. Accordingly, the pre-Merger historical financial information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks and uncertainties. You should review the “Risk Factors” section ofpresented in this prospectus forreflects the standalone financial statements of Private Histogen and, therefore, period-over-period comparisons may not be meaningful. In addition, references to the Company’s operating results prior to the Merger will refer to the operating results of Private Histogen. Except as otherwise indicated herein or as the context otherwise requires, references in this prospectus to “Histogen” “the Company,” “we,” “us” and “our” refer to Histogen Inc., a discussionDelaware corporation, on a post-Merger basis, and the term “Private Histogen” refers to the business of important factors that could cause our actual resultsprivately-held Histogen Inc. prior to differ materially fromcompletion of the results described in or implied by the forward-looking statements contained in the following discussion and analysis.Merger.

Overview

We areHistogen is a biotechnologyclinical-stage therapeutics company focused on developing potential first-in-class restorative therapeutics that ignite the developmentbody’s natural process to repair and commercializationmaintain healthy biological function.

Histogen’s technology is based on the discovery that growing fibroblast cells under simulated embryonic conditions induces them to become multipotent with stem cell like properties. The environment created by Histogen’s proprietary process mimics the conditions within the womb — very low oxygen and suspension. When cultured under these conditions, the fibroblast cells generate biological materials, growth factors and proteins, that have the potential to stimulate a person’s own stem cells to activate and replace/regenerate damaged cells and tissue. Histogen’s proprietary, reproducible manufacturing process provides targeted solutions that harness the body’s inherent regenerative power across a broad range of novel medicinestherapeutic indications including hair growth, joint cartilage regeneration, spinal disc repair and dermal rejuvenation.

Components of Results of Operations

Revenue

Our revenues to treat liver disease. We are developing our lead compound, emricasan, fordate have been generated primarily from the treatmentsale of patients in orphan populations with chronic liver diseasecosmetic ingredient products (“CCM”), license fees, professional services revenue, and acute exacerbations of chronic liver disease. Toa National Science Foundation grant award.

License, Product and Professional Services Revenue

Our license, product and professional services revenue to date emricasan has been studied in over 500 subjects in ten clinical trials. generated primarily from payments received under the Allergan Agreements.

Grant Revenue

In March 2017, the National Science Foundation (“NSF”), a randomized Phase 2b clinical trial, emricasan demonstratedgovernment agency, awarded us a statistically significant, consistent, rapid and sustained reduction in elevated levels of two key biomarkers of inflammation and cell death, alanine aminotransferase, or ALT, and cleaved Cytokeratin 18, or cCK18, respectively, both of which are implicated in the severity and progression of liver disease. Our initial development strategy targets indications for emricasan with high unmet clinical need and orphan patient populations, such as patients with acute-on-chronic liver failure, or ACLF, chronic liver failure, or CLF, and patients who have developed liver fibrosis post-orthotopic liver transplant due to Hepatitis C virus infection, or HCV-POLT.

We have designed a comprehensive clinical program to demonstrate the therapeutic benefit of emricasan across the spectrum of fibrotic liver disease. We plan to study emricasan in patients with rapidly progressing fibrosis (HCV-POLT) as well as in patients with established liver cirrhosis and decompensated liver disease (ACLF and CLF). In the HCV-POLT population where progression of fibrosis is particularly rapid, we plan to assess whether emricasan can arrest this progression which eventually leads to cirrhosis and ultimately liver failure. If emricasan demonstrates the ability to halt the progression of fibrosis, we believe this could serve as a basis to study emricasan in additional indications in liver disease in the future. Our planned trials in ACLF will evaluate whether emricasan can halt the progression of decompensation to multi-organ failure or death in an acutely decompensating cirrhotic patient population. Our planned trials in CLF will assess whether emricasan can stabilize decompensation and provide patients with chronic decompensation additional time to obtain a liver transplant. Our clinical development plan for emricasan includes a Phase 2b clinical trial in ACLF patients, a Phase 2b clinical trial in CLF patients, and a Phase 3 pivotal trial in HCV-POLT patients. We expect to initiate the Phase 2b ACLF trial and the Phase 3 HCV-POLT trial (currently designated a Phase 3 registration study in the European Union and a Phase 2b study in the United States) in the second half of 2013 and the Phase 2b CLF trial in the second half of 2014.

We previously conducted the majority of our activities related to emricasan through our wholly-owned subsidiary, Idun Pharmaceuticals, Inc., or Idun, which we acquired from Pfizer Inc. in August 2010. In January 2013, the assets and rights related to emricasan were distributed from Idun to us for no consideration, at which time we spun off Idun, which became an independent company owned by our stockholders at that time. See “Certain Relationships and Related Person Transactions.” The following information is presented on a consolidated basis to include the accounts of Idun. All intercompany transactions and balances are eliminated in consolidation.

Since our inception, our primary activities have been organizational activities, including recruiting personnel, conducting research and development grant to develop a novel wound dressing for infection control and tissue regeneration.

Operating Expenses

Cost of Revenues

Cost of product revenue represents direct and indirect costs incurred to bring the product to saleable condition, including write-offs of inventory.

Cost of professional services revenue represents costs for full-time employee equivalents and actual out-of-pocket costs.

In-Process Research and Development

In-process research and development expenses represent costs incurred for acquisitions of technologies for which regulatory approval had not yet been obtained.

Research and Development

Research and development expenses consist primarily of costs incurred for the preclinical and clinical trialsdevelopment of our product candidates, which include:

expenses under agreements with third-party contract organizations, investigative clinical trial sites that conduct research and raising capital. To date, we have fundeddevelopment activities on our operations primarily through salesbehalf, and consultants;

costs related to develop and manufacture preclinical study and clinical trial material;

salaries and employee-related costs, including stock-based compensation;

costs incurred under our collaboration and third-party licensing agreements; and

laboratory and vendor expenses related to the execution of preferred stockpreclinical and convertible promissory notes. From inception through March 31, 2013, we have received net proceeds of $60.0 million from such sales.clinical trials.

We have no products approved for sale, we have not generated any revenues to dateaccrue all research and we have incurred significant operating losses since our inception. We have never been profitable and have incurred consolidated net losses of approximately $12.0 million and $8.7 milliondevelopment costs in the years ended December 31, 2011period for which they are incurred. Costs for certain development activities are recognized based on an evaluation of the progress to completion of specific tasks using information and 2012, respectively,data provided to us by our vendors, collaborators and $2.3 millionthird-party service providers. Advance payments for goods or services to be received in future periods for use in research and development activities are deferred and then expensed as the three months ended March 31, 2013. As of March 31, 2013, we had an accumulated deficit of $61.1 million.related goods are delivered and as services are performed.

We expect our research and development expenses to continue to incur significant operating losses and negative cash flows from operating activitiesincrease substantially for the foreseeable future as we continue the clinical development of emricasan and seek regulatory approval for and, if approved, pursue eventual commercialization of emricasan. As of March 31, 2013, we had cash, cash equivalents and short-term investments of approximately $5.1 million. To fund further operations, we will need to raisewe: (i) invest in additional capital. We may obtain additional financing in the future through the issuance of our common stock in this public offering, through other equity or debt financings or through collaborations or partnerships with other companies. Although it is difficult to predict future liquidity requirements, we believe that the net proceeds from this offering and our existing cash, cash equivalents and short-term investments, together with interest thereon, will be sufficient to fund our operations for at least the next 18 months. In particular, we expect that the net proceeds from this offering will allow us to complete our planned Phase 2b ACLF trial, Phase 2b/3 HCV-POLT trial and Phase 2b CLF trial. We will need to raise additional funds to complete additional clinical trials of emricasan, to fund regulatory filings for emricasan in the United States and the European Union and for potential commercialization of emricasan. However, successful transition to profitability is dependent upon achieving a level of revenues adequateoperational personnel to support our cost structure. We cannot assure you thatplanned product development efforts, and (ii) continue to invest in developing our product candidates as our product candidates advance into later stages of development, and as we will ever be profitable or generate positive cash flow from operating activities and, unless and until we do, we will needbegin to raise substantial additional capital through debt or equity financings or through collaborations or partnerships with other companies. We may not be able to raise additional capital on terms acceptable to us, or at all, and any failure to raise capital as and when needed could have a material adverse effect on our resultsconduct larger clinical trials. Product candidates in later stages of operations, financial condition and our ability to execute on our business plan. In its report on our consolidated financial statements for the year ended December 31, 2012, our independent registered public accounting firm included an explanatory paragraph expressing substantial doubt regarding our ability to continue as a going concern.

Financial Overview

Revenues

We currently have no products approved for sale, and we have not generated any revenues to date. We have not submitted any drug candidate for regulatory approval. In the future, we may generate revenues from a combination of milestone payments, reimbursements, and royalties in connection with any future collaboration we may enter into with respect to emricasan, as well as product sales from emricasan. However, we do not expect to receive revenues unless and until we receive approval for emricasan or potentially enter into collaboration agreements for emricasan. If we fail to achieve clinical success in the development of emricasan in a timely manner and/or obtain regulatory approval for this drug candidate, our ability to generate future revenues would be materially adversely affected.

Research and Development Expenses

The majority of our operating expenses to date have been incurred in research and development activities. In late 2011, we ceased clinical development generally have higher development costs than those in earlier stages of a product candidate, CTS-1027, which we licensed from Roche Palo Alto LLCclinical development, primarily due to the increased size and F. Hoffman-La Roche Ltd., or collectively Roche, in 2006. In early 2012, the rights to this product candidate reverted to Roche. Research and development expenses through 2011 were primarily devoted to this product candidate. Starting in late 2011,duration of later-stage clinical trials.

Our direct research and development expenses have been focused on theare tracked by product candidate and consist primarily of external costs, such as fees paid under third-party license agreements and to outside consultants, contract research organizations (“CROs”), contract manufacturing organizations and research laboratories in connection with our preclinical development, of emricasan. Since acquiring emircasan, we have incurred approximately $9.9 million in theprocess development, of emricasan through March 31, 2013. Our business model is currently focused on the broadmanufacturing and clinical development of emricasan in various liver diseasesactivities. We do not allocate employee costs and is dependent uponcosts associated with our continuingdiscovery efforts, laboratory supplies and facilities, including other indirect costs, to specific product candidates because these costs are deployed across multiple programs and, as such, are not separately classified. We use internal resources primarily to conduct our research as well as for managing our preclinical development, process development, manufacturing and a significant amount of clinical development. Ourdevelopment activities. These employees work across multiple programs and, therefore, we do not track our costs by product candidate unless such costs are includable as subaward costs. The following table shows our research and development expenses consist primarily of:by type of activity (in thousands):

 

  Three Months Ended
September 30,
  Nine Months Ended
September 30,
 
       2020            2019           2020          2019     

Pre-clinical and clinical

 $373  $3  $1,121  $173 

Salaries and benefits

  641   467   1,655   1,461 

Facilities and other costs

  520   203   1,586   1,082 
 

 

 

  

 

 

  

 

 

  

 

 

 

Total research and development expenses

 $1,534  $673  $4,362  $2,716 
 

 

 

  

 

 

  

 

 

  

 

 

 

expenses incurred under agreementsWe cannot determine with contract research organizations,certainty the timing of initiation, the duration or CROs, investigative sitesthe completion costs of current or future preclinical studies and consultants that conduct our clinical trials andof our preclinical studies;

employee-related expenses, which include salaries and benefits;

the cost of finalizing our chemistry, manufacturing and controls capabilities and providing clinical trial materials;

facilities, depreciation and allocated operating expenses; and

costs associated with other research activities and regulatory approvals.

Research and development costs are expensed as incurred.

At this time,product candidates due to the inherently unpredictable nature of preclinical and clinical development, we are unable to estimate withincluding any certaintypotential expanded dosing beyond the costs we will incuroriginal protocols based in the continued development of emricasan.part on ongoing clinical success. Clinical and preclinical development timelines, the probability of success and development costs can differ materially from expectations.

We are currently focusedanticipate that we will make determinations as to which product candidates to pursue and how much funding to direct to each product candidate on advancing emricasanan ongoing basis in multiple indicationsresponse to the results of ongoing and future preclinical studies and clinical trials, regulatory developments and our future research and development expensesongoing assessments of each product candidate’s commercial potential. We will depend on its clinical success.need to raise substantial additional capital in the future. In addition, we cannot forecast with any degree of certainty whether emricasan willwhich product candidates may be the subject ofto future collaborations, when such arrangements will be secured, if at all, and to what degree such arrangements would affect our development plans and capital requirements.

Research and development expenditures will continue to be significant and will increase as we continue clinical development of emricasan over at least the next several years. We expect to incur significant development costs as we conduct our planned Phase 2b and Phase 3 clinical trials of emricasan, subject to receiving input from regulatory authorities.

The costs of clinical trials may vary significantly over the life of a project owing to factors that include but are not limited to the following:

per patient trial costs;

the number of patients that participate in the trials;

the number of sites included in the trials;

the countries in which the trial is conducted;

the length of time required to enroll eligible patients;

the number of doses that patients receive;

the drop-out or discontinuation rates of patients;

potential additional safety monitoring or other studies requested by regulatory agencies;

the duration of patient follow-up; and

the efficacy and safety profile of the drug candidate.

We do not expect emricasan to be commercially available, if at all, for at least the next several years.

General and Administrative Expenses

General and administrative expenses consist principallyprimarily of salaries and relatedpersonnel-related costs, for personnel in executive, finance, and business development functions. Other general and administrative expenses includeinsurance costs, facility costs, patent filing and maintenance costs and professional fees for legal, patent, consulting, auditinginvestor and taxpublic relations, accounting and audit services.

Personnel-related costs consist of salaries, benefits and stock-based compensation. We anticipate thatexpect our general and administrative expenses willto increase in future periods, reflecting an expanding infrastructure and increased professional feessubstantially as we: (i) incur additional costs associated with being a public reporting company.

In addition, if emricasan receivescompany, including audit, legal, regulatory, approval, we expect to incur increased expensesand tax-related services associated with building a salesmaintaining compliance with exchange listing and marketing team. Some expenses may be incurred prior to receiving regulatory approval of emricasan. We do not expect to receive any such regulatory approval for at least the next several years.SEC requirements, director and officer insurance premiums, and investor relations costs, (ii) hire additional personnel, and (iii) protect our intellectual property.

Other Income (Expense)

Interest Income

Interest income consists primarily of interest income earned on our cash and cash equivalents, as well as our short-term investments.which consist of money market funds. Our interest income has not been significant due to low interest earned on invested balances.

Interest Expense

Interest expense consists primarily of coupon interest on our $1.0 million promissory note payable to Pfizer Inc.

Other Income (Expense)

Other income includes a one-time, non-operating transaction associated with the receipt of a federal investment tax credit in 2010.

Other Financing Income (Expense)

Other financing (expense) income consists of the acceleration of the remaining amortization of the debt discount and the revaluation of our convertible preferred stock warrants issued in conjunction with our 2010 bridge note financing.

Critical Accounting Policies and Significant Judgments and Estimates

Our management’s discussion and analysis of financial condition and results of operations is based on our financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported revenues and expenses during the reporting periods. These items are monitored and analyzed by us for changes in facts and circumstances, and material changes in these estimates could occur in the future. We base our estimates on historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Changes in estimates are reflected in reported results for the period in which they become known. Actual results may differ materially from these estimates under different assumptions or conditions.

While our significant accounting policies are more fully described in the notes to our audited consolidated financial statements appearing elsewhere in this prospectus, we believe that the following accounting policies are critical to the process of making significant judgments and estimates in the preparation of our financial statements and understanding and evaluating our reported financial results.

Accrued Research and Development Expenses

As part of the process of preparing our consolidated financial statements, we are required to estimate our accrued research and development expenses. This process involves reviewing contracts and purchase orders, reviewing the terms of our vendor agreements, communicating with our applicable personnel to identify services that have been performed on our behalf, and estimating the level of service performed and the associated cost incurred for the service when we have not yet been invoiced or otherwise notified of actual cost. The majority of our service providers invoice us monthly in arrears for services performed. We make estimates of our accrued expenses as of each balance sheet date in our consolidated financial statements based on facts and circumstances known to us at that time.

Examples of estimated accrued research and development expenses include:

fees paid to CROs in connection with clinical studies;

fees paid to investigative sites in connection with clinical studies;

fees paid to vendors in connection with preclinical development activities; and

fees paid to vendors related to product manufacturing, development and distribution of clinical supplies.

We base our expenses related to clinical studies on our estimates of the servicesproceeds received and efforts expended pursuant to contracts with multiple research institutions and CROs that conduct and manage clinical studies on our behalf. The financial terms of these agreements are subject to negotiation, vary from contract to contract, and may result in uneven payment flows and expense recognition. Payments under some of these contracts depend on factors such as the successful enrollment of patients and the completion of clinical trial milestones. In accruing service fees, we estimate the time period over which services will be performed and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from our estimate, we adjust the accrual accordingly. Our understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in our reporting changes in

estimates in any particular period. We have not experienced any significant adjustments to our estimates to date. Clinical trial activities were minimal for the years ended December 31, 2011 and 2012, and the three months ended March 31, 2013.

Share-Based Compensation

We account for share-based compensation by measuring and recognizing compensation expense for all share-based payments made to employees and directors based on estimated grant date fair values. We use the straight-line method to allocate compensation cost to reporting periods over each optionee’s requisite service period, which is generally the vesting period. We estimate the fair value of our share-based awards to employees and directors using the Black-Scholes option pricing model. The Black-Scholes model requires the input of subjective assumptions, including the risk-free interest rate, expected dividend yield, expected volatility, expected term and the fair value of the underlying common stock on the date of grant, among other inputs.

The following table summarizes our weighted-average assumptions used in the Black-Scholes model to value employee option grants:

   Year Ended December 31,   Three Months
Ended March 31,
 
   2011   2012   2013 
       (unaudited)  

Risk-free interest rate

   1.18%-2.71   0.78%-1.41   0.95%-1.11

Expected dividend yield

               

Expected volatility

   70%-72   69%-70   69%-75

Expected term (in years)

   6.1     6.1     6.1  

Risk-free Interest Rate.The risk-free interest rate assumption is based on zero-coupon U.S. Treasury instruments that have terms consistent with the expected term of our stock option grants.

Expected Dividend Yield.We used an expected dividend yield of zero because we have never declared or paid any cash dividends and do not presently plan to pay cash dividends in the foreseeable future.

Expected Volatility.Due to our limited operating history, our status as a private company, and lack of company-specific historical and implied volatility, the expected volatility rate used to value stock option grants is estimated based on volatilities of a peer group of similar companies whose share prices are publicly available. The peer group was developed based on companies in the pharmaceutical and biopharmaceutical industry in a similar stage of product development to us.

Expected Term.We utilize the SEC staff’s simplified method for estimating the expected term of stock option grants. Under this approach, the weighted-average expected term is presumed to be the average of the vesting term and the contractual term of the option.

Common Stock Value

We are required to estimate the fair value of the common stock underlying our stock-based awards when performing the fair value calculations using the Black-Scholes option pricing model. The fair value of the common stock underlying our stock-based awards was determined on each grant date by our board of directors, with input from management. All options to purchase shares of our common stock are intended to be granted with an exercise price per share no less than the fair value per share of our common stock underlying those options on the date of grant, based on the information known to us on the date of grant. Our assessments of the fair value of our common stock were done using methodologies, approaches and assumptions consistent with the American Institute of Certified Public Accountants, or AICPA, Audit and Accounting Practice Aid Series:Valuation of Privately Held Company Equity Securities Issued as Compensation, or the AICPA Practice Guide. In addition, our board of directors considered various objective and subjective factors to determine the fair value of our common stock, including: the conclusions of contemporaneous valuations of our common stock by an unrelated valuation specialist, external market conditions affecting the biopharmaceutical industry, trends within the biopharmaceutical industry, the superior rights and preferences of our preferred stock relative to our common stock at the time of each grant, our results of operations and financial position, the status of our research and

development efforts, our stage of development and business strategy, the lack of an active public market for our common and our preferred stock, and the likelihood of achieving a liquidity event such as an initial public offering, or IPO, or sale of our company in light of prevailing market conditions.

Our assessment analyses were based on a methodology that first estimated the fair value of our business as a whole, or enterprise value. Once we determined the expected enterprise value we then adjusted for expected cash and debt balances, allocated value to the various stockholders, adjusted to present value and discounted for lack of marketability.

In valuing our common stock, the board of directors determined the equity value of our company by utilizing the market approach. The market approach estimates the fair value of a company by applying market multiples of comparable publicly traded or privately held companies in the applicable industry or similar lines of business which are based on key metrics implied by the enterprise values or acquisition values of comparable publicly traded or privately held companies.

We then allocated the fair value of our company to each of our classes of stock using either the Option Pricing Method, or OPM, or the Probability Weighted Expected Return Method, or PWERM. The OPM treats common stock and convertible preferred stock as call options on an enterprise value, with exercise prices based on the value thresholds at which the allocation among the various holders of a company’s securities changes. Under this method, the common stock has value only if the funds available for distribution to the stockholders exceed the value of the liquidation preferences of our preferred stock at the time of a liquidity event such as a merger, sale or IPO, assuming the enterprise has funds available to make a liquidation preference meaningful and collectible by the stockholders. The common stock is modeled to be a call option with a claim on the enterprise at an exercise price equal to the remaining value immediately after the convertible preferred stock is liquidated. The OPM uses the Black-Scholes option pricing model to price the call option. This model defines the securities’ fair values as functions of the current fair value of a company and uses assumptions such as the anticipated timing of a liquidity event and the estimated volatility of the equity securities. A discount for lack of marketability was applied to reflect the increased risk arising from the inability to readily sellsublease of office space previously occupied by Conatus, both the shares.

The PWERM involves a forward-looking analysis of the possible future outcomes of the enterprise. The future outcomes considered under the PWERM included private mergerlease and acquisition sale outcomes, as well stay-private and dissolution scenarios. In the private merger and acquisition sale scenarios, a large portion of the equity value is allocated to the convertible preferred stock to incorporate the aggregate liquidation preferences. The fair value of the enterprise determined using the private merger and acquisition, stay-private and dissolution scenarios would be weighted according to the board of directors’ estimate of the probability of each scenario.

The key subjective factors and assumptions usedsublease terminated in our valuations primarily consisted of: (i) the selection of the appropriate valuation model, (ii) the selection of the appropriate market comparable transactions, (iii) the financial forecasts utilized to determine future cash balances and necessary capital requirements, (iv) the probability and timing of the various possible liquidity events, (v) the estimated weighted average cost of capital and (vi) the discount for lack of marketability of our common stock.September 2020.

Given the limited number of biopharmaceutical IPOs and public and private merger and acquisition, or M&A, transactions from 2010 through March 2013, we considered the population of all biopharmaceutical IPOs and all public and private biopharmaceutical M&A transactions, beginning with transactions in 2010 and including transactions through the related valuation date, across all stages of development and therapeutic areas. Certain very large and very small transactions were eliminated as outliers. The remaining comparables covered a wide range of therapeutic areas, addressable markets and stages of development. We generally selected the low end, average or high end of the comparables based on our assessment of which valuation was most likely, given the timing of each event, our expected development progress and financial condition at the expected liquidity event date.

At each valuation date, we used our then current budget or forecast, as approved by our board of directors, to determine our estimated financing needs and forecasted cash balances for each exit scenario and exit date. We then estimated the probability and timing of each potential liquidity event based on management’s best estimate taking into consideration all available information as of the valuation date, including the stage of clinical

development of our lead drug candidate, industry clinical success rates, our expected near-term and long-term funding requirements, and an assessment of the current financing and biopharmaceutical industry environments at the time of the valuation.

Discussion of Specific Valuation Inputs

Over time, a combination of factors caused changes in the fair value of our common stock. The following summarizes the changes in value from January 2011 to March 31, 2013 and the major factors that caused each change.

During 2010 we focused our research and development expenses on CTS-1027, completing a series of clinical trials exploring anti-inflammatory and anti-viral properties of CTS-1027 in patients with Hepatitis C virus infection who had failed existing therapies. In addition, in August 2010, we augmented our product portfolio with the acquisition of Idun from Pfizer. The acquisition yielded multiple assets, including: emricasan, a preclinical stage candidate for oncology indications named IDN-13389 and a development agreement with Abbott Laboratories for an oncology drug candidate in multiple Phase 2 clinical trials. Emricasan continues to be held by us, while the rest of Idun was spun out to our shareholders in January 2013. At this time we are focusing our development efforts exclusively on emricasan.

We utilized this information when applying the market approach and a PWERM allocation method using multiple private M&A sale scenarios, a stay-private scenario, and a dissolution scenario. Each of these scenarios is based on a combination of the expected timing of future financing or liquidity events and the progress achieved in our clinical studies. As a result of the developments in our business and applying the common stock valuation methodology described above, we estimated the fair value of our common stock to be $0.12 per share as of January 1, 2011 with no significant developments occurring between January 1, 2011 and our February 17, 2011 grant. For option grants in February 2011 the board of directors deemed the fair value of the common stock to be $0.12 per share. We identified three private M&A exit scenarios—low, moderate, and high, a stay-private scenario, and a dissolution scenario in applying the PWERM method to determine the value of our common stock as of January 1, 2011. The private M&A scenarios contemplated a December 2012 potential exit date based on the then-current estimate of the next significant valuation inflection point related to the results of the clinical development of CTS-1027. We weighted the low M&A scenario at 40%, the moderate M&A scenario at 2.5%, the high M&A scenario at 2.5%, the stay private scenario at 20% and the dissolution scenario at 35%. We applied a discount for lack of marketability of 22% to each of the private M&A scenarios and also to the stay private scenario in determining the value of our common stock as of January 1, 2011.

March 2011 through December 2011: Throughout most of 2011, we continued to focus our research and development expenses on CTS-1027; however, in late 2011, we ceased clinical development of CTS-1027. Beginning in late 2011, we began focusing our research and development expenses on the development of emricasan. We utilized this information when applying the market approach and an OPM allocation method. As a result of the ceasing development of CTS-1027, our refocus on emricasan and the common stock valuation methodology described above, we estimated the fair value of our common stock to be $0.01 per share as of December 9, 2011. Because we ceased development of CTS-1027 and shifted our research and development focus to emricasan, we adopted an OPM allocation method to value our common stock. As a result of the shift in our research and development focus in late 2011 and related delay in achieving an exit event, it became too speculative to determine the potential liquidity options that might become available to us, making application of the PWERM allocation method unreliable. We applied a discount for lack of marketability of 20% in determining the value of the common stock as of December 9, 2011.

December 2011 through December 2012:Beginning in late 2011 and throughout 2012, we continued to focus our research and development efforts on the development of emricasan. These efforts involved evaluating existing data and meeting with the FDA to determine if there could be a course of action to reinitiate clinical development of emricasan. Although a course of action was determined late in 2012, the ability to lift the existing clinical hold on the development of emricasan was unknown and dependent upon the FDA evaluating new data and concluding we could reinitiate clinical development of emricasan. While a study was completed in late 2012 which we believed would lead to a conclusion that clinical development of emricasan could be

reinstated, we were required to submit a new investigational new drug application, or IND, for emricasan which was filed in mid-December 2012. Throughout 2012, the potential to reinstate clinical development of emricasan was highly speculative and completely dependent upon the FDA’s approval of the IND. We expected a lengthy process of reviewing our IND, and the ultimate clearance of the IND was still highly uncertain. As a result, determining the potential liquidity options that might become available to us remained highly speculative which continued to make the PWERM allocation method unreliable. We utilized this information when applying the market approach and an OPM allocation method. For option grants in December 2011, March 2012, June 2012, July 2012, and December 2012 the board of directors deemed the fair value of our common stock to be $0.01 per share. We continued to apply an OPM allocation method in determining the value of our common stock because of the difficulty associated with determining the potential liquidity events that might have become available to us. We applied a discount for lack of marketability of 20% in determining the value of our common stock during this period.

January 2013 through February 2013:We continued to focus our research and development efforts on the development of emricasan. We utilized this information when applying the market approach and an OPM allocation method. For option grants as of January 1, 2013 and February 5, 2013, the board of directors deemed the fair value of our common stock to be $0.01 per share. We continued to apply an OPM allocation method in determining the value of our common stock because of the difficulty associated with determining the potential liquidity events that might have become available to us as we had just received approval of the IND, had minimal funding, and had to finalize our strategy for the course of action for the reintroduction of clinical development of emricasan, including funding for the reintroduction. We applied a discount for lack of marketability of 20% in determining the value of our common stock during this period.

March 2013:As a result of the FDA formally lifting emricasan from clinical hold in the United States, and consideration of the potential liquidity events that might have become available to us, including a potential IPO during this period, we applied a PWERM allocation method in determining the value of our common stock. We utilized this information when applying the market approach and a PWERM allocation method using multiple IPO scenarios, a stay-private scenario, and a dissolution scenario. As a result of the developments in our business and applying the common stock valuation methodology described above, we estimated the fair value of our common stock to be $0.28 per share as of March 7, 2013. We identified two IPO scenarios – low and high, a stay-private scenario, and a dissolution scenario in applying the PWERM method to determine the value of or common stock as of March 7, 2013. We weighted the low IPO scenario at 15%, the high IPO scenario at 25%, the stay-private scenario at 40%, and the dissolution scenario at 20%. We applied a discount for lack of marketability of 10% in the low IPO scenario, 15% in the high IPO scenario, and 30% in the stay private scenario in determining the value of our common stock as of March 7, 2013.

Summary of Stock Option Grants

The following table sets forth the exercise price and the fair market value of our common stock at the date of grant for all option grants from January 1, 2011 to June 12, 2013:

Grant Date

  Number of
Shares Subject to
Options Granted
   Exercise Price
per Share
   Common Stock
Fair Market Value per Share at
Date of Grant
 

February 17, 2011

   3,675,000    $0.12    $0.12  

December 9, 2011

   1,350,500    $0.01    $0.01  

March 22, 2012

   25,000    $0.01    $0.01  

June 1, 2012

   10,000    $0.01    $0.01  

July 9, 2012

   300,000    $0.01    $0.01  

December 7, 2012

   1,311,750    $0.01    $0.01  

January 1, 2013

   17,500    $0.01    $0.01  

February 5, 2013

   100,000    $0.01    $0.01  

March 7, 2013

   160,000    $0.28    $0.28  

Total share-based compensation expense included in the consolidated statement of operations was allocated as follows:

   Year Ended
December 31,
   Three Months
Ended March 31,

(unaudited)
 
   2011   2012   2012   2013 

Research and development

  $87,581    $84,664    $23,207    $12,848  

General and administrative

   72,109     59,360     17,859     8,570  
  

 

 

   

 

 

   

 

 

   

 

 

 

Total

  $159,690    $144,024    $41,066    $21,418  
  

 

 

   

 

 

   

 

 

   

 

 

 

Total share-based compensation expense related to unvested stock option grants not yet recognized as of March 31, 2013 was approximately $44,000 and the weighted-average period over which these grants are expected to vest is 3.5 years.

Based on the assumed initial public offering price of $                    per share (the midpoint of the price range set forth on the cover page of this prospectus), the intrinsic value of stock options outstanding as of March 31, 2013 would be $                    , of which $                     and $                     would have been related to stock options that were vested and unvested, respectively, at that date.

Convertible Preferred Stock Warrant Liability

We have issued freestanding warrants exercisable for shares of our Series A convertible preferred stock. These warrants are classified a liability in the accompanying consolidated balance sheets, as the terms for redemption of the underlying security are outside our control. The warrants are recorded at fair value using the Black-Scholes option pricing model. The fair value of all warrants, except as noted below, is remeasured at each financial reporting date with any changes in fair value being recognized in other financing income (expense), a component of other income (expense), in the accompanying consolidated statements of operations. We will continue to re-measure the fair value of the warrant liability until: (i) exercise, which is expected to occur immediately prior to the completion of this offering, (ii) expiration of the related warrant, or (iii) conversion of the convertible preferred stock underlying the security into common stock, at which time the warrants will be classified as a component of stockholders’ equity and will no longer be subject to remeasurement.

Net Operating Loss and Research and Development Tax Credit Carryforwards

As of December 31, 2012, we had federal and California tax net operating loss carryforwards of $52.3 million and $51.2 million, respectively, which begin to expire in 2025 and 2015, respectively, unless previously utilized. As of December 31, 2012, we also had federal and California research and development tax credit carryforwards of $1.3 million and $745,000, respectively. The federal research and development tax credit carryforwards will begin to expire in 2026. The California research and development tax credit carryforwards are available indefinitely.

Utilization of the net operating losses and credits may be subject to a substantial annual limitation due to ownership change limitations provided by the Internal Revenue Code of 1986, as amended. The annual limitation may result in the expiration of our net operating losses and credits before we can use them. We have recorded a valuation allowance on all of our deferred tax assets, including our deferred tax assets related to our net operating loss and research and development tax credit carryforwards.

JOBS Act

In April 2012, the Jumpstart Our Business Startups Act of 2012, or the JOBS Act, was signed into law. The JOBS Act contains provisions that, among other things, reduce certain reporting requirements for an “emerging growth company.” As an “emerging growth company,” we are electing not to take advantage of the extended transition period afforded by the JOBS Act for the implementation of new or revised accounting standards, and as a result, we will comply with new or revised accounting standards on the relevant dates on which adoption of such standards is required for non-emerging growth companies. Section 107 of the JOBS Act provides that our decision not to take advantage of the extended transition period is irrevocable. In addition, we are in the process of evaluating the

benefits of relying on the other exemptions and reduced reporting requirements provided by the JOBS Act. Subject to certain conditions set forth in the JOBS Act, if as an “emerging growth company” we choose to rely on such exemptions, we may not be required to, among other things, (i) provide an auditor’s attestation report on our system of internal controls over financial reporting pursuant to Section 404, (ii) provide all of the compensation disclosure that may be required of non-emerging growth public companies under the Dodd-Frank Wall Street Reform and Consumer Protection Act, (iii) comply with any requirement that may be adopted by the Public Company Accounting Oversight Board regarding mandatory audit firm rotation or a supplement to the auditor’s report providing additional information about the audit and the financial statements (auditor discussion and analysis), and (iv) disclose certain executive compensation-related items such as the correlation between executive compensation and performance and comparisons of the Chief Executive Officer’s compensation to median employee compensation. These exemptions will apply for a period of five years following the completion of our initial public offering or until we no longer meet the requirements of being an “emerging growth company,” whichever is earlier.

Results of Operations

Comparison of the Three Months Ended March 31, 2012September 30, 2020 and 20132019

Research and Development Expenses. Research and development expenses were $1.2 million inThe following table summarizes our results of operations for the three months ended March 31, 2012, as compared to $968,000 forSeptember 30, 2020 and 2019 (in thousands):

   Three Months Ended September 30, 
     2020       2019       Change   

Revenues

    

License

  $5  $5   —   

Product

   419   190   229 

Professional services

   71   119   (48
  

 

 

  

 

 

  

 

 

 

Total revenues

   495   314   181 

Operating expenses

    

Cost of product revenue

   263   81   182 

Cost of professional services revenue

   62   104   (42

Research and development

   1,534   673   861 

General and administrative

   1,982   1,202   780 
  

 

 

  

 

 

  

 

 

 

Total operating expenses

   3,841   2,060   1,781 
  

 

 

  

 

 

  

 

 

 

Loss from operations

   (3,346  (1,746  (1,600

Total other income (expense)

   83   48   35 
  

 

 

  

 

 

  

 

 

 

Net loss

  $(3,263 $(1,698 $(1,565
  

 

 

  

 

 

  

 

 

 

Revenues

For the same period in 2013.three months ended September 30, 2020 and 2019, we recognized license revenues of $5,000.

For the three months ended September 30, 2020 and 2019, we recognized product and service revenues of $0.5 million and $0.3 million, respectively. The decreaseyear-over-year increase of $0.2 million was primarily due to the decreased preclinical studiesfulfillment of supply orders of CCM to Allergan.

Total Operating Expenses

Cost of Revenues

For the three months ended September 30, 2020 and 2019, we recognized cost of product revenue of $0.3 million and $0.1 million, respectively. The increase of $0.2 million for the three months ended September 30, 2020 as compared to the three months ended September 30, 2019 was commensurate with the increase in 2013product sales to Allergan.

For both the three months ended September 30, 2020 and 2019, we recognized costs of professional services of $0.1 million.

Research and Development Expenses

Research and development expenses for the three months ended September 30, 2020 and 2019 were $1.5 million and $0.7 million, respectively. The increase of $0.8 million for the three months

ended September 30, 2020 as compared to the three months ended September 30, 2019 was primarily due to increases related to theexpanded development costs of emricasan.our product candidates and increases in personnel related expenses due to changes in duties and responsibilities of existing personnel.

General and Administrative Expenses.

General and administrative expenses for the three months ended September 30, 2020 and 2019 were relatively unchanged at $750,000$2.0 million and $749,000$1.2 million, respectively. The $0.8 million increase for the three months ended September 30, 2020 as compared to the three months ended September 30, 2019 was primarily due to increases in insurance, rent and legal and accounting fees, offset slightly by decreases in personnel related expenses due to changes in duties and responsibilities of existing personnel, in the three months ended March 31, 2012September 30, 2020.

Comparison of Nine Months Ended September 30, 2020 and 2013, respectively.2019

Changes in componentsThe following table sets forth our selected statements of Other Income (Expense) were as follows:

Interest Income. Interest income was $8,000 and $100operations data for the periods ended March 31, 2012 and 2013, respectively.

Interest Expense. Interest expense was unchanged at $18,000 for the periods ended March 31, 2012 and 2013.

Other Income (Expense). Other income was $9,000 for the threenine months ended March 31, 2012, as comparedSeptember 30, 2020 and 2019 (in thousands):

   Nine Months Ended September 30, 
       2020          2019        Change   

Revenues

    

License

  $877  $7,515   (6,638

Product

   419   1,956   (1,537

Grants

      150   (150

Professional service

   285   272   13 
  

 

 

  

 

 

  

 

 

 

Total revenues

   1,581   9,893   (8,312

Operating expenses

    

Cost of product revenue

   424   873   (449

Cost of professional services revenue

   248   237   11 

In-process research and development

   7,144   2,250   4,894 

Research and development

   4,362   2,716   1,646 

General and administrative

   4,753   4,607   146 
  

 

 

  

 

 

  

 

 

 

Total operating expenses

   16,931   10,683   6,248 
  

 

 

  

 

 

  

 

 

 

Loss from operations

   (15,350  (790  (14,560

Total other income (expense)

   55   113   (58
  

 

 

  

 

 

  

 

 

 

Net loss

  $(15,295 $(677 $(14,618
  

 

 

  

 

 

  

 

 

 

Revenues

For the nine months ended September 30, 2020 and 2019, we recognized license revenues of $0.9 million and $7.5 million, respectively. The $7.5 million recognized in the nine months ended September 30, 2019 related to other expense of $16,000 foran upfront payment received in the same period in 2013 caused by currency fluctuationconnection with the execution of the 2019 Allergan Agreement. We received a $1.0 million upfront payment in connection with an amendment to the 2019 Allergan Agreement executed in the conversionnine months ended September 30, 2020, of U.S. dollars to pounds sterling.which approximately $0.1 million was deferred at September 30, 2020.

Other Financing Income (Expense). Other financing incomeFor the nine months ended September 30, 2020 and 2019, we recognized product and service revenues of $0.7 million and $2.2 million, respectively. The decrease of $1.5 million for the threenine months ended March 31, 2012September 30, 2020 as compared to the nine months ended September 30, 2019 was $9,000, while other financing expenseprimarily due to a decrease in fulfillment of supply orders of CCM to Allergan and one additional customer in 2019 as compared to 2020.

Grant revenue for the same periodnine months ended September 30, 2020 and 2019 was $0 and $0.2 million, respectively, all of which was related to an NSF research grant awarded to us in 2013 was $547,000. Other financing income (expense)2017 and resulted from the acceptance of milestone reports in 2019.

Total Operating Expenses

Cost of Revenues

For the nine months ended September 30, 2020 and 2019, we recognized cost of product revenue of $0.4 million and $0.8 million, respectively. The decrease of $0.4 million for the two periods representnine months ended September 30, 2020 as compared to the revaluationnine months ended September 30, 2019 was commensurate with the decrease in product sales, coupled with a $0.2 million write-off of Series A convertible preferred stock warrants issued inventory.

For the nine months ended September 30, 2020 and 2019, we recognized costs of professional services of $0.2 million.

In-process Research and Development Expenses

In-process research and development expenses increased $4.9 million for the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019. In nine months ended September 30, 2020, we incurred $7.1 million for in-process research and development acquired in connection with the 2010 bridge notes.Merger and in the nine months ended September 30, 2019, we incurred $2.3 million for in-process research and development related to the acquisition of HST-003 and HST-004 from PUR.

Research and Development Expenses

Research and development expenses for the nine months ended September 30, 2020 and 2019 were $4.4 million and $2.7 million, respectively. The increase of $1.7 million for the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019 was primarily due to expanded development costs of our product candidates.

General and Administrative Expenses

General and administrative expenses for the nine months ended September 30, 2020 and 2019 were $4.8 million and $4.6 million, respectively. This increase of $0.2 million was primarily due to increases in insurance, legal, accounting and other professional fees in the nine months ended September 30, 2020, offset by a decrease in success based fees related to license revenue received in the nine months ended September 30, 2020 of approximately $0.7 million as compared to the nine months ended September 30, 2019.

Comparison of the Years Ended December 31, 20112019 and 20122018

ResearchThe following table sets forth our selected statements of operations data for the periods shown below (in thousands):

   Years Ended December 31, 
   2019  2018  Change 

Revenues

    

Product and services

  $3,785 ��$1,458  $2,327 

License

   7,519   19   7,500 

Grants

   150   300   (150
  

 

 

  

 

 

  

 

 

 

Total revenues

   11,454   1,777   9,677 

Cost of revenues

   2,215   744   1,471 

Research and development

   6,345   3,490   2,855 

General and administrative

   6,212   3,184   3,028 
  

 

 

  

 

 

  

 

 

 

Total operating expenses

   14,772   7,418   7,354 
  

 

 

  

 

 

  

 

 

 

Loss from operations

   (3,318  (5,641  2,323 
  

 

 

  

 

 

  

 

 

 

Total other income (expense)

   318   (521  839 

Income tax expense

   (1  (1  —   
  

 

 

  

 

 

  

 

 

 

Net loss

   (3,001  (6,163  3,162 

Loss attributable to noncontrolling interest

   (35  (38  3 
  

 

 

  

 

 

  

 

 

 

Net loss available to common stockholders

  $(2,966 $(6,125 $3,159 
  

 

 

  

 

 

  

 

 

 

Revenues

For the years ended December 31, 2019 and Development Expenses. Our2018, we recognized product and service revenues of $3.8 million and $1.5 million respectively. The year-over-year increase of $2.3 million was primarily due to a $2.2 million increase in fulfillment of supply orders of CCM, which includes deferred revenue recognition of $1.5 million. As of December 31, 2019 and 2018, deferred revenue related to the supply of CCM to Allergan was $0 million and $1.5 million, respectively.

For the years ended December 31, 2019 and 2018, we recognized $7.5 million and $0.02 million, respectively, in license revenue related to the Allergan Agreements. The increase is fully attributable to recognition of license revenue received during the year ended December 31, 2019 as part of the 2019 amendment to the Allergan Agreement.

In March 2017, the National Science Foundation, a government agency, awarded Histogen a research and development expenses were $9.5 milliongrant to develop a novel wound dressing for infection control and $5.5 milliontissue regeneration. Grant revenue for the years ended December 31, 20112019 and 2012,2018 was $0.15 million and $0.3 million, respectively. These expenses decreased primarily due to the discontinuation in 2011The decrease of CTS-1027. Clinical and development costs for CTS-1027 were $6.2 million in 2011 and less than $100,000 in 2012. Development costs for emricasan were $1.5 million in 2011 and $3.5 million in 2012. Research and development related payroll costs were $1.8 million in 2011 and $2.0 million in 2012. Our current research and development expenses are focused on emricasan.

General and Administrative Expense. General and administrative expenses increased from $2.9$0.15 million for the year ended December 31, 20112019 as compared to $3.1the year ended December 31, 2018 is due to timing of milestone reports accepted by the NSF.

Total Operating Expenses

Cost of Revenues

Cost of product revenue represents direct and indirect costs incurred to bring the product to saleable condition, including write-offs of inventory. For the years ended December 31, 2019 and 2018, we recognized cost of product revenue of $1.9 million and $0.6 million, respectively. The increase of $1.3 million for the year ended December 31, 2012.2019 as compared to the year ended December 31,

2018 was commensurate with the increase in product sales under the Allergan Agreements and supply agreement with Edge Systems LLC, coupled with a $0.2 million write-off of inventory in connection with the termination of the supply agreement with Edge Systems LLC.

Cost of professional services revenue represents costs for full-time employee equivalents and actual out-of-pocket costs. For the years ended December 31, 2019 and 2018, we recognized costs of professional services of $0.3 million and $0.2 million, respectively. The increase in these expenses is primarily associated with the addition of personnel and travel expenses.

Changes in components of Other Income (Expense) were as follows:

Interest Income. Interest income decreased slightly from $28,000$0.1 million for the year ended December 31, 2011 to $26,000 for the year ended December 31, 2012. Interest income consists of interest earned on our cash and investment balances. Our interest income has not been significant due to nominal cash and investment balances and low interest earned on invested balances.

Interest Expense. Interest expense decreased from $114,000 for the year ended December 31, 2011 to $70,000 for the year ended December 31, 2012. The decrease was due to the conversion of convertible promissory notes that we issued in a 2010 bridge financing, or the 2010 bridge notes, into shares of our Series B convertible preferred stock in 2011, which resulted in no further interest charges on these notes.

Other Income (Expense). Other income (expense) remained relatively unchanged for the year ended December 31, 20112019 as compared to the year ended December 31, 2012.2018 was a result of an increase in professional services sales.

Other Financing Income (Expense).Research and Development Expenses Other financing income was $455,000

The following table shows our research and development expenses by type of activity (in thousands):

   Years Ended December 31, 
       2019           2018     

Pre-clinical and clinical

  $1,829   $1,666 

Acquisition of in-process research and development assets

   2,295    —   

Salaries and benefits

   1,805    1,255 

Facilities and other costs

   416    569 
  

 

 

   

 

 

 

Total research and development expenses

  $6,345   $3,490 
  

 

 

   

 

 

 

Research and development expenses for the years ended December 31, 2019 and 2018 were $6.3 million and $3.5 million, respectively. The increase of $2.8 million for the year ended December 31, 20112019 as compared to other financingthe year ended December 31, 2018 was primarily due to an increase of $2.3 million for in-process research and development expense related to the acquisition of $92,000HST-003 and HST-004 from the acquisition from PUR, and an increase of $0.5 million primarily related to expanded development costs of numerous of its product candidates

General and Administrative Expenses

General and administrative expenses for the years ended December 31, 2019 and 2018 were $6.2 million and $3.2 million, respectively. The increase of $3.0 million for the year ended December 31, 2012. This decrease was due2019 as compared to the acceleration of the remaining amortization of the debt discountyear ended December 31, 2018 was primarily attributable to enhancing our operating infrastructure, hiring our Chairman and CEO, developing our strategic, regulatory and commercialization pathway, and legal and administrative costs related to the 2010 bridge notes upon their conversion in 2011, offset by the revaluation of Series A convertible preferred stock warrants issued in connectionproposed merger with the 2010 bridge notes.Conatus.

Liquidity and Capital ResourcesOther Income (Expense)

We have incurred losses since inception and negative cash flows from operating activities for the years ended December 31, 2011 and 2012 and three months ended March 31, 2013. Asrecognized other income of March 31, 2013, we had an accumulated deficit of $61.1 million. We anticipate that we will continue to incur net losses for the foreseeable future as we continue the development and potential commercialization of emricasan and incur additional costs associated with being a public company.

From our inception through March 31, 2013, we have funded our operations primarily through private placements of equity and convertible debt securities. As of March 31, 2013, we had cash, cash equivalents and short-term investments of approximately $5.1 million. To fund further operations, we will need to raise additional capital. The report of our independent registered public accounting firm on our audited consolidated financial statements$0.3 million for the year ended December 31, 2012 includes2019, as compared to other expense of $0.5 million for the year ended December 31, 2018. The $0.8 million increase in other income for the year ended December 31, 2019 was primarily due to $0.3 million of other income in 2019 due to the expiration of warrant liabilities at December 31, 2019, in contrast to $0.1 million and $0.4 million of other expense in 2018 due to changes in the fair value of the warrant liabilities and an explanatory paragraph stating that our recurringinducement expense related to the February 1, 2018 amendment to the Conversion, Termination and Release Agreement with Lordship Ventures Histogen Holdings LLC, respectively.

Liquidity and Capital Resources

From inception through September 30, 2020, we have accumulated losses of $59.2 million and expect to incur operating losses and generate negative cash flows from operations for the foreseeable future. As of September 30, 2020, we had $6.6 million in cash and cash equivalents.

We have not yet established ongoing sources of revenues sufficient to cover our operating costs and will need to continue to raise additional capital to support our future operating activities, including progression of our development programs, preparation for commercialization, and other operating costs. Our plans with regard to these matters include entering into a net capital deficiency raisecombination of additional debt or equity financing arrangements, government funding, strategic partnerships, collaboration and licensing arrangements, or other similar arrangements. There can be no assurance that we will be able to obtain additional financing on terms acceptable to us, on a timely basis or at all.

The interim condensed and year end consolidated financial statements have been prepared assuming that we will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. Based on the above, there is substantial doubt about our ability to continue as a going concern. Ifconcern within one year from the date these consolidated financial statements were available to be issued. The interim condensed and year end consolidated financial statements do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets or the amounts and classification of liabilities that may result from the outcome of this uncertainty.

On May 29, 2019, Conatus received a letter from the Nasdaq staff indicating that, for the prior thirty consecutive business days, the bid price for its common stock had closed below the minimum $1.00 per share requirement for continued listing on the Nasdaq Global Market under Nasdaq Listing Rule 5450(a)(1).

Conatus filed an application to transfer the listing of its common stock from the Nasdaq Global Market to the Nasdaq Capital Market. On November 27, 2019, the application was approved by Nasdaq and a result, Conatus was granted an additional 180-day grace period, until May 25, 2020, to regain compliance with the minimum $1.00 per share requirement for continued listing on the Nasdaq Capital Market under Nasdaq Listing Rule 5810(c)(3)(A). Subsequently, based on an immediately effective rule change with the SEC on April 16, 2020, Conatus’ deadline to regain compliance was extended to August 10, 2020.

On May 26, 2020, in connection with, and prior to the completion of, the Merger, we are unable to obtain additional financing on commercially reasonable terms, our business, financial condition and results of operations will be materially adversely affected and we may be unable to continue aseffected a going concern. If we are unable to continue as a going concern, we may have to liquidate our assets and may receive less than the value at which those assets are carried on our financial statements. We may obtain additional financing in the future through the issuancereverse stock split of our common stock, which enabled us to regain compliance with the minimum closing bid price requirement. Even though we have regained compliance with the Nasdaq Capital Market’s minimum closing bid price requirement, there is no guarantee that we will remain in this publiccompliance with such listing requirements in the future.

Common Stock Purchase Agreement with Lincoln Park

In July 2020, we entered into a common stock purchase agreement (the 2020 Purchase Agreement) with Lincoln Park which provides that, upon the terms and subject to the conditions and limitations in the 2020 Purchase Agreement, Lincoln Park, is committed to purchase up to an aggregate of $10.0 million of shares of our common stock at our request from time to time during a 24 month period that began in July 2020 and at prices based on the market price of our common stock at the time of each sale. Upon execution of the 2020 Purchase Agreement, we sold 328,516 shares of common stock at $3.04399 per share to Lincoln Park for proceeds of $1.0 million. During September 2020, pursuant to the 2020 Purchase Agreement, we sold an additional 280,000 shares of our common stock to Lincoln Park for net proceeds of approximately $0.3 million and as of September 30, 2020, $8.5 million of common stock remained available to be sold, subject to certain limitations on the amount of securities the Company may sell under its effective registration statement on Form S-3 within any 12 month period and NASDAQ rules. In consideration for entering into the 2020 Purchase Agreement and concurrently with the execution of the 2020 Purchase Agreement, we issued 66,964 shares of our common stock to Lincoln Park.

November 2020 Registered Direct Offering

In November 2020, we entered into a securities purchase agreement with several institutional and accredited investors for the sale by us of 2,522,784 shares of our common stock at a purchase price of $1.78375 per share, in a registered direct offering, through other equity or debt financings or through collaborations or partnerships with other companies. We estimate that our netH.C. Wainwright & Co., LLC acting as placement agent. Concurrently with the sale of the shares, we also sold unregistered warrants to purchase up to an aggregate of 1,892,088 shares of common stock. The gross proceeds from this offering will be approximately $            million, based upon an assumed initial public offering price of $                    per share (the midpointwere $4.5 million.

At Market Issuance Agreement with Stifel, Nicolaus & Company, Incorporated

Effective July 20, 2020, in connection with the execution of the price range set forth on2020 Purchase Agreement, we elected to terminate the cover pageAt Market Issuance Sales Agreement, dated August 2, 2018, between us and Stifel, Nicolaus & Company, Incorporated, which provided for the sale of this prospectus), afterup to $35.0 million of our common stock, before deducting the estimated underwriting discountsplacement agent’s fees and commissions andother offering expenses, payable by us.and excluding the proceeds, if any from the exercise of the warrants.

Cash Flow Summary for the Nine Months Ended September 30, 2020 and 2019

The following table sets forthshows a summary of our cash flows for the net cash flow activity for each of the periods set forth below:nine months ended September 30, 2020 and 2019 (in thousands):

 

   Year Ended December 31,  Three Months Ended March 31,
(unaudited)
 
   2011  2012  2012   2013 

Net cash used in operating activities

  $(12,095,572 $(8,564,207 $(2,635,029)    $(2,431,335)  

Net cash (used in) provided by investing activities

   (13,988,575  9,511,374   

 

3,127,132

  

  

 

3,725,000

  

Net cash provided by (used in) financing activities

   26,424,333    16,085    12,735     (489,270
  

 

 

  

 

 

  

 

 

   

 

 

 

Net increase in cash and cash equivalents

  $340,186   $963,252   $504,838    $804,395  
  

 

 

  

 

 

  

 

 

   

 

 

 
   Nine Months Ended 
       2020          2019     

Net cash provided by (used in)

   

Operating activities

  $(7,980 $395 

Investing activities

   10,975   (152

Financing activities

   1,839   488 
  

 

 

  

 

 

 

Net increase in cash, cash equivalents and restricted cash

  $4,834  $731 
  

 

 

  

 

 

 

Operating activities

Net cash used in operating activities was $2.6$8.0 million for the threenine months ended March 31, 2012 as comparedSeptember 30, 2020, resulting from our net loss of $15.3 million, which included non-cash charges of $7.9 million primarily related to $2.4acquired in-process research and development in connection with the Merger and stock-based compensation, and a $0.5 million change in our operating assets and liabilities.

Net cash provided by operating activities was $0.4 million for the same period in 2013. Net cash used in operating activities was $12.1nine months ended September 30, 2019, resulting from our net loss of $0.7 million, and $8.6which included non-cash charges of $2.1 million for the years ended December 31, 2011 and 2012, respectively. The primary use of cash was to fund our operationsprimarily related to the developmentissuance of shares of our product candidatesconvertible preferred stock for the settlement with PUR and stock-based compensation, and a $1.0 million change in each of these years.

our operating assets and liabilities.

Investing activities

Net cash provided by investing activities was $3.1 million and $3.7$11.0 million for the threenine months ended March 31, 2012September 30, 2020, consisting of cash of $12.8 million received in connection with the Merger, offset by payments for acquisition related costs and 2013, respectively. purchases of property and equipment. Net cash used in investing activities was $0.2 million for the nine months ended September 30, 2019, all of which was for purchases of property and equipment.

Financing activities

Net cash provided by investingfinancing activities during these periods consisted primarily of cash received fromwas $1.8 million for the sales and maturities of marketable securities. During the year ended December 31, 2011, investing activities used cash of $14.0 million, primarily due to purchases of marketable securities. During the year ended December 31, 2012, investing activities provided cash of $9.5 million consisting primarily of proceeds from maturities of marketable securities.

Financing activities in the threenine months ended March 31, 2012September 30, 2020, resulting primarily from sales of our common stock to Lincoln Park and the

proceeds of the PPP Loan. Net cash provided net cash of $13,000 compared to $489,000 used duringby financing activities was $0.5 million for the periodnine months ended March 31, 2013 and consisted ofSeptember 30, 2019, resulting primarily from proceeds received from the exercisesale of stock options in 2012. Net cash used during the period ended March 31, 2013 consisted primarily of the distribution to the wholly owned subsidiary in connection with the spin-off of Idun. Financing activities in the year ended December 31, 2011 provided net cash of $26.4 million, compared to $16,000 during the year ended December 31, 2012. Financing activities in 2011 consisted of the issuance of 36,417,224 shares of Series Bour convertible preferred stock. Financing activities in 2012 consisted of the exercise of common stock options.

Funding Requirements

We believe that our existing cash and cash equivalents and short-term investments as of March 31, 2013 and the estimated net proceeds from this offering, together with interest thereon, will be sufficient to meet our anticipated cash requirements for at leastinto the next 18 months.third quarter of 2021. However, our forecast of the period of time through which our financial resources will be adequate to support our operations is a forward-looking statement that involves risks and uncertainties, and actual results could vary materially. We have based this estimate on assumptions that may prove to be wrong, and we could use our capital resources sooner than we expect. Additionally, the process of testing product candidates in clinical trials is costly, and the timing of progress, potential dose expansions beyond our planned study protocols based in part on our clinical progress, and expenses in these trials is uncertain.

Our future capital requirements are difficult to forecast and will depend on many factors, including:

 

the initiation,type, number, scope, progress, expansions, results, costs and resultstiming of, our planned Phase 2bpreclinical studies and Phase 3 clinical trials of emricasan;our product candidates which we are pursuing or may choose to pursue in the future;

the outcome,costs and timing of manufacturing for our product candidates, including commercial manufacturing if any product candidate is approved;

the costs, timing and costoutcome of regulatory approvals;review of our product candidates;

the costs of obtaining, maintaining and enforcing our patents and other intellectual property rights;

our efforts to enhance operational systems and hire additional personnel to satisfy our obligations as a public company, including enhanced internal controls over financial reporting;

the costs associated with hiring additional personnel and consultants as our preclinical and clinical activities increase;

the costs and timing of establishing or securing sales marketing and distributionmarketing capabilities if emricasanany product candidate is approved;

delays that may be caused by changing regulatory requirements;our ability to achieve sufficient market acceptance, adequate coverage and reimbursement from third-party payors and adequate market share and revenue for any approved products;

the costs involved in filingterms and prosecuting patent applicationstiming of establishing and enforcingmaintaining collaborations, licenses and defending patent claims;other similar arrangements;

the impact of any natural disasters or public health crises, such as the COVID-19 pandemic; and

the extent to which we acquire or invest in businesses,costs associated with any products or technologies.technologies that it may in-license or acquire.

Until such time, if ever, as we can generate substantial product revenues to support our cost structure, we expect to finance our cashlosses from operations and capital funding needs through a combination of equity offerings, debt financings, government funding and other sources, including potentially collaborations, strategic partnershipslicenses and licensingother similar arrangements. We do not have any committed external source of funds. To the extent that we raise additional capital through the sale of equityconvertible debt or convertible debtequity securities, the ownership interest of our stockholders will be or could be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our common stockholders. Debt financing and

preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise additional funds through collaborations, strategic partnerships or licensinglicenses and other similar arrangements with third parties, we may have to relinquish valuable rights to emricasan, our other technologies, future revenue streams, or research programs or product candidates or grant licenses on terms that may not be favorable to us.us and/or may reduce the value of our common stock. If we are unable to raise additional funds through equitydebt or debtequity financings when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market emricasanour product candidates even if we would otherwise prefer to develop and market emricasansuch product candidates by ourselves.

Contractual Obligations and Commitments

The following table summarizes our contractual obligations at March 31, 2013:

   Payments Due by Period 
   Total   Less than
1 Year
   1- 3 Years   3- 5 Years   More than
5 Years
 

Long-term debt

  $1,000,000                   $1,000,000  

Interest on long-term debt

   513,333     70,000     140,000     140,000     163,333  

Operating lease obligations

   38,514     38,514                 
  

 

 

   

 

 

   

 

 

   

 

 

   

 

 

 

Total

  $1,551,847    $108,514    $140,000    $140,000    $1,163,333  
  

 

 

   

 

 

   

 

 

   

 

 

   

 

 

 

Our commitments for operating leases relate primarily to our lease of office space in San Diego, California.

Our commitment for long-term debt relates to the $1.0 million promissory note issued to Pfizer in July 2010. The note bears interest at a rate of 7% per annum and matures in July 2020, subject to acceleration upon specified events of default. Interest is payable on a quarterly basis during the term of the note.

Under our July 2010 stock purchase agreement with Pfizer, There can be no assurance that we will be able to obtain any sources of financing on acceptable terms, or at all.

We may be unable to raise additional funds on acceptable terms or at all. As a result of the COVID-19 pandemic and actions taken to slow its spread, the global credit and financial markets have recently experienced extreme volatility and disruptions, including severely diminished liquidity and credit availability, declines in consumer confidence, declines in economic growth, increases in unemployment rates and uncertainty about economic stability. If the equity and credit markets deteriorate, it may make any necessary debt or equity financing more difficult, more costly and more dilutive. If we are unable to raise additional funds, we may be required to make paymentsdelay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to Pfizer totaling $18.0 million upon the achievement of specified regulatory milestones relateddevelop and market our product candidates even if we would otherwise prefer to emricasan. As the timing of when these payments will actually be made is uncertaindevelop and the payments are contingent upon the completion of future activities, we have excluded these potential payments from the contractual obligations table above.market such product candidates ourselves.

Off-Balance Sheet Arrangements

We do not have any no off-balance sheet arrangements (as defined by applicable regulations of the Securities and Exchange Commission) that have or are reasonably likely to have a current or future material effect on our financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources.

Related Party Transactions

For a description of our related party transactions, see “Certain Relationships and Related Person Transactions.”resources that are material to stockholders.

Quantitative and Qualitative Disclosures aboutAbout Market Risk

Interest Rate Risk

Our cash, cash equivalents and short-term investments as of March 31, 2013 consisted of cash, money market funds, municipal bonds and corporate debt securities. We are exposed to market risk related to fluctuations in interest rates and market prices. Our primary exposure to market risk is interest income sensitivity, which is affecteda smaller reporting company as defined by changes in the general level of U.S. interest rates. However, becauseRule 12b-2 of the short-term nature ofExchange Act and are not required to provide the instruments in our portfolio, a sudden change in market interest rates would not be expected to have a material impact on our financial condition and/or results of operation.information required under this item.

Our long-term debt bears interest at a fixed rate and therefore has minimal exposure to changes in interest rates.

Effects of Inflation

We do not believe that inflation and changing prices had a significant impact on our results of operations for any periods presented herein.

BUSINESS

Overview

We areHistogen is a biotechnologyclinical-stage therapeutics company focused on developing potential first-in-class restorative therapeutics that ignite the body’s natural process to repair and maintain healthy biological function.

Histogen’s technology is based on the discovery that growing fibroblast cells under simulated embryonic conditions induces them to become multipotent with stem cell like properties. The environment created by Histogen’s proprietary process mimics the conditions within the womb — very low oxygen and suspension. When cultured under these conditions, the fibroblast cells generate biological materials, growth factors and proteins, that have the potential to stimulate a person’s own stem cells to activate and replace/regenerate damaged cells and tissue. Histogen’s proprietary, reproducible manufacturing process provides targeted solutions that harness the body’s inherent regenerative power across a broad range of therapeutic indications including hair growth, joint cartilage regeneration, spinal disc repair and dermal rejuvenation,.

Histogen’s reproducible manufacturing process yields multiple biologic products from a single bioreactor, including cell conditioned medium (CCM), human extracellular matrix (hECM) and hair stimulating complex (HSC), creating a spectrum of products for a variety of markets from one core technology.

Human Multipotent Cell Conditioned Media, or CCM: A soluble multipotent CCM that is the starting material for products for skin care and other applications. The liquid complex produced through Histogen’s manufacturing process contains soluble biologicals with a diverse range of embryonic-like proteins. Because the cells produce and secrete these factors while developing the extracellular matrix, or ECM, these proteins are naturally infused into the liquid media in a stabilized form. The CCM contains a diverse mixture of cell-signaling materials, including human growth factors such as Keratinocyte Growth Factor, soluble human ECM proteins such as collagen, and vital proteins which support the epidermal stem cells that renew skin throughout life.

Human Extracellular Matrix, or hECM: An insoluble hECM for applications such as orthopedics and soft tissue augmentation, which can be fabricated into a variety of structural or functional forms for tissue engineering and clinical applications. The hECM produced through Histogen’s proprietary process is a novel, all-human, naturally secreted material. It is most similar to early embryonic structural tissue which provides the framework and signals necessary for cell in-growth and tissue development. By producing similar ECM materials to those that aided in the original formation of these tissues in the embryo, regenerative cells are supported in vitro and have shown potential as therapeutics in vivo.

Hair Stimulating Complex, or HSC: A soluble biologic comprised of growth factors involved in the signaling of cells in the body, particularly those factors known to be important in hair formation and the stimulation of resting hair follicles.

Under the hECM and HSC core technology platforms, we have two product candidates in development intended to address what we believe to be underserved, multibillion-dollar global markets, and we have an asset previously developed by Conatus Pharmaceuticals Inc. (“Conatus”) that we retained development and commercialization of novel medicinesrights to, treat liver disease. Weemricasan, which we are jointly developing with our lead compound, emricasan,partner, Amerimmune:

HST-001 is a hair stimulating complex, or HSC, intended to be a physician-administered therapeutic for alopecia (hair loss). HST-001 is minimally-invasive and has been shown in early studies to stimulate resting hair follicles to produce new cosmetically-relevant hair. In

May of 2020, Histogen initiated its Phase 1b/2a clinical trial of HST-001, designed to assess the safety, tolerability and indicators of efficacy of HST-001 for the treatment of androgenic alopecia in men. In December of 2020, Histogen announced preliminary week 18 results for the primary efficacy endpoint which supported that patients treated with HST-001 demonstrated separation from placebo patients for absolute change from baseline in total hairs (terminal and vellus) in the target area (TAHC) in the vertex as measured by Canfield’s Hairmetrix macrophotography system, though these preliminary data have not indicated statistical significance. HST-001 was also shown to be safe and well tolerated at week 18 as compared to placebo with no reports of serious adverse events. Histogen anticipates completing the study and reporting the final results from the week 26 assessments, along with its plans for further clinical development of HST-001, in the early first quarter of 2021.

HST-003 is a human extracellular matrix, or hECM, intended for regenerating hyaline cartilage for the treatment of patientsarticular cartilage defects in orphan populationsthe knee, with chronic liver disease and acute exacerbationsa novel malleable scaffold that stimulates the body’s own stem cells. In September 2020, we were awarded a $2.0 million grant by the Peer Reviewed Orthopedic Research Program (PRORP) of chronic liver disease. To date, emricasan has been studied in over 500 subjects in ten clinical trials. Inthe U.S. Department of Defense (“DoD”) to partially fund a randomized Phase 2b1/2 clinical trial of HST-003 for regeneration of cartilage in the knee. In December of 2020, Histogen filed an investigational new drug (“IND”) for the initiation of a Phase 1/2 clinical trial to evaluate the safety and efficacy of HST-003 and expects to initiate a Phase 1 trial in the first quarter of 2021. The U.S. Army Medical Research Acquisition Activity, 820 Chandler Street, Fort Detrick MD 21702, is the awarding and administering acquisition office. The views expressed in this filing are those of Histogen and may not reflect the official policy or position of the Department of the Army, Department of Defense, or the U.S. Government.

Emricasan is an orally active pan-caspase inhibitor being jointly developed with Histogen’s partner Amerimmune for the potential treatment of COVID-19. On October 26, 2020, Histogen entered into a Collaborative Development and Commercialization Agreement with Amerimmune, pursuant to which Amerimmune, at its expense and in collaboration with us, shall use commercially reasonable efforts to lead the development activities for emricasan. Histogen has filed and received permission for an IND from the FDA to initiate a Phase 1 study of emricasan in mild COVID-19patients to assess safety and tolerability. Histogen, along with liver disease, emricasan demonstratedits partner Amerimmune, anticipate initiating a statistically significant, consistent, rapidPhase 1 study in the first quarter of 2021.

Additionally, HST-004, which is a CCM scaffold intended to be administered through an interdiscal injection for spinal disc repair and sustained reduction in elevated levelsHST-002, which is a human-derived collagen and extracellular matrix dermal filler intended to be injected into the dermis for the treatment of two key biomarkers offacial folds and wrinkles. Early preclinical research has shown that HST-004 stimulates stem cells from spinal disc to proliferate and secrete aggrecan and collagen II. HST-004 was shown to reduce inflammation and cell death, alanine aminotransferase, or ALT,protease activity and cleaved Cytokeratin 18, or cCK18, respectively, both of whichupregulate aggrecan production in an ex vivo spinal disc model. HST 002, our hECM filler, provides the natural proteins found in young, healthy skin all-human and naturally produced collagen with dermal matrix proteins. Based upon the FDA’s recent communications that HST-002 will be regulated as a drug-biologic-device combination product, we are implicatedevaluating the impact to our clinical timeline and expect to provide an update in the severityfirst quarter of 2021.

Histogen has also developed a non-prescription topical skin care ingredient utilizing CCM that harnesses the power of growth factors and progressionother cell signaling molecules to support our epidermal stem cells, which renew skin throughout life. The CCM ingredient for skin care currently generates product revenue from Allergan Sales LLC (“Allergan”), who formulates the ingredient into their skin care product lines in spas and professional offices.

Merger

On January 28, 2020, the Company, then operating as Conatus, entered into an Agreement and Plan of liver disease. Merger and Reorganization, as amended (the “Merger Agreement”), with privately-held Histogen Inc. (“Private Histogen”) and Chinook Merger Sub, Inc., a wholly-owned subsidiary of Conatus (“Merger Sub”). Under the Merger Agreement, Merger Sub merged with and into Private Histogen, with Private Histogen surviving as a wholly-owned subsidiary of the Company (the “Merger”). On May 26, 2020, the Merger was completed. Conatus changed its name to Histogen Inc., and Private Histogen, which remains as a wholly-owned subsidiary of the Company, changed its name to Histogen Therapeutics Inc. On May 27, 2020, the combined Company’s common stock began trading on The Nasdaq Capital Market under the ticker symbol “HSTO”.

Pursuant to the terms of the Merger Agreement, each outstanding share of Private Histogen common stock outstanding immediately prior to the closing of the Merger was converted into approximately 0.14342 shares of Company common stock (the “Exchange Ratio”), after taking into account the Reverse Stock Split, as defined below. Immediately prior to the closing of the Merger, all shares of Private Histogen preferred stock then outstanding were exchanged into shares of common stock of Private Histogen. In addition, all outstanding options exercisable for common stock of Private Histogen and warrants exercisable for common stock of Private Histogen became options and warrants exercisable for the same number of shares of common stock of the Company multiplied by the Exchange Ratio. Immediately following the Merger, stockholders of Private Histogen owned approximately 71.3% of the outstanding common stock of the combined company.

On May 26, 2020, in connection with, and prior to the completion of, the Merger, the Company effected a one-for-ten reverse stock split of its then outstanding common stock (the “Reverse Stock Split”). The par value and the authorized shares of the common stock were not adjusted as a result of the Reverse Stock Split. All of the Company’s issued and outstanding common stock have been retroactively adjusted to reflect this Reverse Stock Split for all periods presented. All issued and outstanding Private Histogen common stock, convertible preferred stock, options and warrants prior to the effective date of the Merger have been retroactively adjusted to reflect the Exchange Ratio for all periods presented.

Market and Commercial Opportunity

Our initialproprietary, reproducible manufacturing process provides targeted solutions that harness the body’s inherent regenerative power across a broad range of therapeutic indications including hair growth, joint cartilage regeneration, spinal disc repair and dermal rejuvenation.

We currently have two product candidates in development strategy targets indicationsintended to address what we believe to be underserved, multibillion-dollar global markets, HST-001, a treatment for hair loss and HST-003 a treatment for joint cartilage repair and the emricasan asset, which we are jointly developing with high unmet clinical need in orphan patient populations, such as patients with acute-on-chronic liver failure, or ACLF, chronic liver failure, or CLF,our partner, Amerimmune for the potential treatment for COVID-19:

HST-001 is an HSC intended to be a physician-administered therapeutic for alopecia (hair loss). The hair loss market is both large and patients who have developed liver fibrosis post-orthotopic liver transplantunderserved. We believe this is largely due to Hepatitis C virus infection,the ineffectiveness of currently available options, and the hesitation of many affected to seek invasive surgical treatments. Patients seek a safe, minimally-invasive treatment to achieve cosmetically relevant new hair growth. The development of HST-001 has the potential to expand the hair restoration market by offering an option to those that currently have none, and a potentially more effective option to anyone presently using or HCV-POLT.considering Rogaine or Propecia.

Emricasan

HST-003 is a first-in-class,hECM intended for regenerating hyaline cartilage for the treatment of articular cartilage defects in the knee, with a novel malleable scaffold that stimulates the

body’s own stem cells. According to our market research, 0.2 million people in the United States receive joint cartilage repair and 17.5 million are considering joint cartilage repair. Physicians, and their patients, are seeking treatments that reverse cartilage degeneration and we believe that the market is growing.

Emricasan is an orally active, caspase proteasepan-caspase inhibitor designed to reducebeing jointly developed with our partner Amerimmune for the activitypotential treatment of enzymes that mediate inflammation and cell death, or apoptosis.COVID-19. We believe that by reducing the activity of these enzymes, emricasan hascaspase inhibitors have the potential to interrupt the progression of liver disease. We have observed compelling preclinical and clinical trial results that suggest emricasan may have clinical utility in slowing progression of liver diseases regardless of the original cause of the disease. In particular, we have completed two placebo-controlled Phase 2 trials in patients with liver disease showing statistically significant reductions in ALT levels that occur rapidly, within as little as one day after initiation of therapy, and are maintained throughout the treatment period. In our 204-patient Phase 2b trial, we also measured cCK18, an important biomarker of apoptosis and disease severity. Statistically significant reductions in cCK18 were demonstrated in this trial as early as three hours post-dosing and were maintained for the duration of dosing. Emricasan has been generally well-tolerated in all of the clinical studies.

Liver disease can result from injury to the liver caused by a variety of insults, including Hepatitis C virus, or HCV, Hepatitis B virus, or HBV, obesity, chronic excessive alcohol use or autoimmune diseases. RegardlessTo date, emricasan has been studied in over 950 patients in 19 completed clinical trials across a broad range of the underlying causeliver diseases. In NASH cirrhosis patients in multiple clinical Phase II trials conducted by Conatus, emricasan demonstrated rapid and sustained reductions in elevated levels of the disease, therekey biomarkers of inflammation and cell death. Similarly, elevated biomarkers are important similaritiesalso believed to play a role in the disease progression including increased inflammatory activity and excessive liver cell apoptosis, which if unresolved leads to fibrosis. Fibrosis, if allowed to progress, will lead to cirrhosis, or excessive scarring of the liver, which may result in reduced liver function. Some patients with liver cirrhosis have a partially functioning liver and may appear asymptomatic for long periods of time, which is referred to as compensated liver disease. When the liver is unable to perform its normal functions this is referred to as decompensated liver disease. ACLF occurs in patients who have compensated or decompensated cirrhosis but are in relatively stable condition until an acute event sets off a rapid worsening of liver function. Patients with CLF suffer from continual disease progression which may eventually lead them to require orthotopic liver transplantation. Patients with HCV who receive orthotopic liver transplants, in which the diseased liver is replaced by a donor liver, will have their HCV infections recur. Many of these HCV-POLT patients will experience accelerated development of fibrosisseverity and progression to cirrhosis of COVID-19.

Novel cosmetics ingredients, including stem cells, peptides and growth factors like the transplanted liver due to the recurrence of HCV.

The National Institutes of Health, or NIH, estimates that 5.5 million AmericansCCM skin care ingredient produced by our technology have chronic liver disease or cirrhosis, and liver disease is the twelfth leading cause of deathgained excitement in the United States. Accordingmainstream skincare market. We currently generate sales revenue from Allergan, who formulates the ingredient into their skin care product lines.

Strategic Agreements

Amerimmune Collaborative Development and Commercialization Agreement

We retained rights to the European Associationemricasan, an orally active pan-caspase inhibitor, which was an asset previously developed by Conatus. We have been evaluating alternatives to create opportunities for increasing shareholder value from this asset. On October 26, 2020, we entered into a Collaborative Development and Commercialization Agreement (the “Collaboration Agreement”) with Amerimmune pursuant to which we agreed to jointly develop emricasan for the Studypotential treatment of the Liver, or EASL, 29 million Europeans have chronic liver diseaseCOVID-19. We filed and liver disease represents approximately two percent of deaths annually. Inreceived approval for an IND from the United States more than 5,000 liver transplants are performed in adultsFood and more than 500 in children annually, with approximately 17,000 subjects still awaiting transplant. We are planningDrug Administration (“FDA”) to initiate a Phase 1 study the effectiveness of emricasan in defined subsets ofmild Covid-19 patients to assess safety and tolerability. Until such time as a strategic partner assumes responsibility, we, in collaboration with liver disease. ACLF, CLFAmerimmune, shall be responsible for and HCV-POLT are potential orphan indicationsshall control all regulatory interactions relating to emricasan. Under the Collaboration Agreement, Amerimmune, at its expense and in bothcollaboration with us, shall use commercially reasonable efforts to lead the United Statesdevelopment activities for emricasan. Amerimmune shall be responsible for conducting clinical trials and European Union, or the EU. We estimate that the target populations for emricasan in these indications in the United States and the EU are approximately 150,000 ACLF patients, 10,000 CLF patients and 50,000 HCV-POLT patients.

We have designed a comprehensive clinical program to demonstrate the therapeutic benefitwe shall provide reasonable quantities of emricasan across the spectrumfor such purpose. We believe our current supply of fibrotic liver disease. We planemricasan is sufficient to study emricasan in patients with rapidly progressing

fibrosis (HCV-POLT) as well as in patients with established liver cirrhosis and decompensated liver disease (ACLF and CLF). In the HCV-POLT population where progression of fibrosis is particularly rapid, we plansupport clinical trials through Phase 2. The parties shall establish a joint development committee to assess whether emricasan can arrest this progression which eventually leads to cirrhosis and ultimately liver failure. If emricasan demonstrates the ability to halt the progression of fibrosis, we believe this could serve as a basis to study emricasan in additional indications in liver disease in the future. Our planned trials in ACLF will evaluate whether emricasan can halt the progression of decompensation to multi-organ failure or death in an acutely decompensating cirrhotic patient population. Our planned trials in CLF will assess whether emricasan can stabilize decompensation and provide patients with chronic decompensation additional time to obtain a liver transplant. Our clinical development plan for emricasan includes a Phase 2b clinical trial in ACLF patients, a Phase 2b clinical trial in CLF patients, and a Phase 3 pivotal trial in HCV-POLT patients. We expect to initiate the Phase 2b ACLF trial and the Phase 3 HCV-POLT trial (currently designated a Phase 3 registration study in the EU and a Phase 2b study in the United States) in the second half of 2013 and the Phase 2b CLF trial in the second half of 2014.

LOGO

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This trial is currently designated a Phase 3 registration study in the EU and a Phase 2b study in the United States and we therefore sometimes refer to this trial as the Phase 2b/3 HCV-POLT trial.

Our Team

Our management team is comprised of the former senior executives of Idun Pharmaceuticals Inc., or Idun, and our Chief Medical Officer was the clinical program leader for emricasan during its development at Pfizer Inc. At Idun, these senior executives discovered and ledoversee the development of emricasan Idun’s lead asset, which was then known as IDN-6556, until the company was soldand a joint partnering committee to Pfizer in July 2005oversee commercialization activities for approximately $298 million. We acquired the global rightsemricasan. Each party shall retain ownership of their legacy intellectual property and responsibility for ongoing patent application prosecution and maintenance costs. In addition, we granted Amerimmune an exclusive option, subject to emricasan from Pfizer, where it was known as PF-3491390, in July 2010. At both Iduncertain terms and Pfizer, emricasan was being developed for the treatment of liver fibrosis. As a result of our collective experience, we believe we can successfully develop emricasan for the treatment of acute-on-chronic and chronic liver diseases, including ACLF, CLF, and HCV-POLT.

Our Strategy

Our strategy isconditions, to an exclusive license to develop and commercialize medicinesemricasan throughout the world during the term. After exercise of the option, Amerimmune, alone or in conjunction with one or more strategic partners, will use its commercially reasonable efforts to treat liver diseasedevelop, manufacture and associated fibrotic indicationscommercialize emricasan and we shall equally share the profits with Amerimmune.

Allergan License and Supply Agreements

In July 2017, we entered into a letter agreement to transfer Suneva Medical, Inc.’s Amended and Restated License and Supply Agreements (collectively the “Allergan Agreements”) to Allergan, which grants exclusive rights to commercialize our CCM skin care ingredient worldwide, excluding South Korea, China and India, in areasexchange for royalty payments to us based on Allergan’s sales of high unmetproduct including the licensed ingredient. Through September 30, 2020, we entered into several

amendments to the Allergan Agreements to, among other things, expand Allergan’s license rights, identify exclusive and non-exclusive fields of use and clarify responsibilities with response to regulatory filings. For these amendments to the License Agreements, we have received cash payments of $19.5 million through September 30, 2020. The Allergan Agreements also include a potential future milestone payment of $5.5 million if Allergan’s net sales of products containing our CCM skin care ingredient exceeds $60 million in any calendar year through December 31, 2027. From time to time, we may improve our CCM skin care ingredient, and to the extent that these are within the field of use in the Allergan Agreements, we will provide the improvements to Allergan. The remaining performance obligations related to the Allergan Agreements from 2017 were our obligations to supply CCM and provide potential future improvements to Allergan, for which our obligation to supply CCM was satisfied during the fourth quarter of 2019. On January 17, 2020, we amended the Allergan Agreements, further clarifying the fields of use, the product definition and rights to certain improvements, as well as us agreeing to supply additional CCM and provide further technical assistance to Allergan (the cost of which shall be reimbursed to us), for a one-time payment of $1.0 million to us. Allergan may terminate the agreement for convenience upon one business days’ notice to us. Under the Amended and Restated License Agreement, as amended, Allergan will indemnify us for third party claims arising from Allergan’s breach of the agreement, negligence or willful misconduct, or the exploitation of products by Allergan or its sublicensees. We will indemnify Allergan for third party claims arising from our breach of the agreement, negligence or willful misconduct, or the exploitation of products by us prior to the effective date.

Huapont License and Supply Agreement

On September 30, 2016, concurrent with the purchase of 4,000,000 shares of Series D convertible preferred stock and 190,377 shares of common stock by Pineworld Capital Limited (or “Huapont”) on August 10, 2016, Histogen and Huapont entered into an Exclusive License and Supply Agreement (“LSA”) that had been negotiated simultaneously with and in anticipation of the closing of the Huapont investment transaction. The LSA, among other provisions, grants limited exclusive license and sublicense rights to Huapont for the commercialization and sale of HST-001 in the People’s Republic of China (the “territory”); and a limited non-exclusive non-assignable right to Histogen Trademarks in the territory. The agreement contains provisions for Histogen to supply HST-001 to Huapont upon request for use in clinical trials and following regulatory approval in the defined territory, for which Huapont will reimburse us up to $150,000 in manufacturing costs. To date, no development activities have occurred and no supply of HST-001 has been requested by Huapont pursuant to the LSA.

Histogen has a right to terminate the LSA upon failure by Huapont to achieve certain diligence or sales milestones or its abandonment of commercialization of the product, certain changes of control of Huapont, Huapont’s material breach of the LSA, Huapont’s failure to purchase certain volumes of product under the LSA, or Huapont’s sale of the product outside the territory or sale of a competing product, subject to certain cure rights. Huapont may terminate the agreement if further commercialization of the product is not commercially feasible, upon Histogen’s material breach of the LSA or if Histogen sells a competing product in the territory. Huapont will indemnify Histogen for third-party claims arising from Huapont’s distribution, marketing and promotion of products in or for the territory, Huapont’s breach of the agreement or Huapont’s intentional acts or omissions or negligence. Histogen will indemnify Huapont for the development, manufacture or supply of product by or under the control of Histogen, Histogen’s breach of its obligations or warranties, intellectual property infringement in connection with the using, importing or selling of products by Huapont, infringement of trademark rights in connection with the use of Histogen’s trademarks, or Histogen’s intentional acts or omissions or negligence.

Upon the adoption of ASC 606, we determined that as no up-front consideration was attributable to the LSA, there was no impact to the historical accounting for the arrangement, and

therefore, no transition adjustment was required. The LSA includes development milestone payments of up to $5,000,000 in aggregate; $0.8 million upon the approval of the IND by the China Food and Drug Administration (“CFDA”); $1.8 million upon the completion of all clinical trials required for a New Drug Filing (“NDA”) with the CFDA; $1.2 million upon NDA filing with the CFDA; and $1.2 million upon NDA approval by the CFDA. In accordance with ASC 606, Histogen excluded the development milestones from the transaction price as it considered such payments to be fully constrained under ASC 606 due to the inherent uncertainty in the achievement of such milestone payments, which are highly susceptible to factors outside of Histogen’s control. We will recognize revenue for development milestone as it becomes probable that a significant reversal in the amount of cumulative revenue recognized will not occur using the most likely method. For the years ended December 31, 2019 and 2018, we have not recognized any milestone revenue under the LSA. The arrangement also includes tiered royalty payments based on net sales of HST-001, consisting of 4% up to the first $50 million of net sales, 5.5% up to $50 million, 6.5% up to $125 million, and 7.5% above $200 million. Sales-based royalties promised in exchange for the license will be recognized as revenue in the period when subsequent sales occur. For the years ended December 31, 2019 and 2018, we did not recognize any royalty revenue under the LSA.

PUR

PUR was formed to develop and market applications along with products in the surgical/orthopedic and device markets. On April 5, 2019, Histogen entered into a Settlement, Release and Termination Agreement with PUR and its members (“PUR Settlement”), which terminated the License, Supply and Operating Agreements between Histogen and PUR, eliminated Histogen’s membership interest in PUR and returned all in-process research and development assets to Histogen (the “Development Assets”). The agreement also provided indemnification and complete release by all parties. As consideration for the reacquisition of the Development Assets, Histogen compensated PUR with both equity and cash components, including 1,166,667 shares of Series D convertible preferred stock with a fair value of $1.75 million and a potential cash payout of up to $6.25 million (the “Cap Amount”). Histogen paid PUR $0.5 million in upfront cash, forgave approximately $22 thousand of accounts receivable owed by PUR to Histogen, and settled an outstanding payable of PUR of approximately $23 thousand owed to a third-party. Histogen is also obligated to make milestone and royalty payments, including (a) a $0.4 million upon the unconditional acceptance and approval of a New Drug Application or Pre-Market Approval Application by the US FDA related to the Development Assets, (b) a $0.4 million commercialization milestone upon reaching gross sales (by Histogen or licensee) of the $0.5 million of products incorporating the Development Assets, and (c) a five percent (5%) royalty on net revenues collected by Histogen from commercial sales (by Histogen or licensee) of products incorporating the Development Assets. The aforementioned cash payments, along with any future milestone and royalty payments, are all applied against the Cap Amount.

Governmental Regulation

FDA Regulation and Marketing Approval

In the U.S., the FDA regulates drug products, biological products, and medical need.devices under the Federal Food, Drug, and Cosmetic Act (FDCA), the Public Health Service (PHS) Act, and other federal regulations. These FDA-regulated products are also subject to state and local statutes and regulations, as well as applicable laws or regulations in foreign countries. The key elements FDA, and comparable regulatory agencies in state and local and local jurisdictions and in foreign countries, impose substantial requirements on the research, development, testing, manufacture, quality control, labeling, packaging, storage, distribution, record-keeping, approval, post-approval monitoring, advertising, promotion, marketing, sampling and import and export of our strategyFDA-regulated products. Failure to comply with the applicable requirements at any time during the drug development process, approval process or after approval may subject an applicant to administrative or judicial sanctions or non-approval of product candidates. These sanctions could include a clinical hold on clinical trials, FDA’s refusal to

approve pending applications or related supplements, withdrawal of an approval, untitled or warning letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines, restitution, disgorgement, civil penalties or criminal prosecution. Such actions by government agencies could also require us to expend a large amount of resources to respond to the actions. Any agency or judicial enforcement action could have a material adverse effect on us.

IND and Clinical Trials of Drug and Biological Products

Prior to commencing a human clinical trial of a drug or biological product, an IND application, which contains the results of preclinical studies along with other information, such as information about product chemistry, manufacturing and controls and a proposed protocol, must be submitted to the FDA. An IND is a request for authorization from the FDA to administer an investigational drug or biological product to humans. The IND automatically becomes effective 30 days after receipt by the FDA, unless the FDA within the 30-day time period raises concerns or questions about the conduct of the clinical trial. In such a case, the IND sponsor must resolve any outstanding concerns with the FDA before the clinical trial may begin. A separate submission to the existing IND must be made for each successive clinical trial to be conducted during drug development.

An independent Institutional Review Board (IRB) for each site proposing to conduct the clinical trial must review and approve the investigational plan for the trial before it commences at that site. Informed written consent must be obtained from each trial subject.

Human clinical trials for drug and biological products typically are to:conducted in sequential phases that may overlap:

 

  

Develop emricasan as a treatment for liver diseases in orphan patient populations.Phase I We believe that by inhibiting the caspases responsible for inflammation and apoptosis in the liver, emricasan has the potentialinvestigational drug/biologic is given initially to stabilize and improve liver function and to slow liver fibrosis progression inhealthy human subjects or patients with liver disease. We are focused on developing emricasan for orphan patient populations with high unmet medical needs, including ACLF, CLFthe target disease or condition in order to determine metabolism and HCV-POLT. We believe that because these indications represent targeted patient populations, the size and costpharmacologic actions of the requireddrug in humans, side effects and, if possible, to gain early evidence on effectiveness. During Phase I clinical trials, willsufficient information about the investigational drug/biologic’s pharmacokinetics and pharmacologic effects may be manageable for a companyobtained to permit the design of our size.well-controlled and scientifically valid Phase II clinical trials.

 

  

Pursue accelerated pathwaysPhase II—clinical trials are conducted to evaluate the effectiveness of the drug/biologic for regulatory approvala particular indication or in a limited number of patients in the United Statestarget population to identify possible adverse effects and EU. Based on our discussions with regulatory authorities insafety risks, to determine the United Kingdomefficacy of the drug/biologic for specific targeted diseases and Germany, we have designedto determine dosage tolerance and optimal dosage. Multiple Phase II clinical studies for both HCV-POLTtrials may be conducted by the sponsor to obtain information prior to beginning larger and ACLF that could suffice as single registration studies for each indication in the EU if the results are compelling. The U.S. Food and Drug Administration, or FDA, may require additional registration trials for

HCV-POLT. We plan to discuss our registration strategy for ACLF and CLF with the FDA after we have received data from our plannedmore expensive Phase 2b ACLF study. We believe that our planned Phase 2b CLF trial may have the potential to serve as a second registration trial for the ACLF indication, should one be required.III clinical trials.

 

  

Build our own salesPhase III—when Phase II clinical trials demonstrate that a dosage range of the drug/biologic appears effective and marketing capabilitieshas an acceptable safety profile, and provide sufficient information for the design of Phase III clinical trials, Phase III clinical trials in an expanded patient population at multiple clinical sites may begin. They are intended to commercialize emricasanfurther evaluate dosage, effectiveness and safety, to establish the overall benefit-risk relationship of the investigational drug/biologic and to provide an adequate basis for indications that target orphanproduct labeling and approval by the FDA. In most cases, the FDA requires two adequate and well-controlled Phase III clinical trials to demonstrate the efficacy of the drug in an expanded patient populations in North America and Europe. If emricasan is approved for ACLF, CLF and/or HCV-POLT in North America and/or Europe, we intend to build our own commercial organization to market the product for these indications. Specifically, we plan to build a focused, specialized sales force to target the key physicians who treat these indications in these geographic locations, including hepatologists and other liver specialists in tertiary care and transplant centers.population at multiple clinical trial sites.

All clinical trials must be conducted in accordance with FDA regulations, including good clinical practice (GCP) requirements, which are intended to protect the rights, safety and well-being of trial participants, define the roles of clinical trial sponsors, administrators and monitors and ensure clinical trial data integrity. Regulatory authorities, including the FDA, an IRB, a data safety monitoring board or

the sponsor, may suspend or terminate a clinical trial at any time on various grounds, including a finding that the participants are being exposed to an unacceptable health risk or that the clinical trial is not being conducted in accordance with FDA requirements.

During the development of a new drug or biologic, sponsors are given opportunities to meet with the FDA at certain points. These points may be prior to submission of an IND, at the end of Phase II clinical trials, and before an NDA/BLA is submitted. Meetings at other times may be requested. These meetings can provide an opportunity for the sponsor to share information about the data gathered to date, for the FDA to provide advice and for the sponsor and the FDA to reach agreement on the next phase of development. Sponsors typically use the end-of-Phase II clinical trials meetings to discuss their Phase II clinical trials results and present their plans for the pivotal Phase III registration trial that they believe will support approval of the new drug/biologic.

An investigational drug product that is a combination of two different drugs in the same dosage form must comply with an additional rule that requires that each component make a contribution to the claimed effects of the drug product. This typically requires larger studies that test the drug against each of its components.

Disclosure of Clinical Trial Information

Sponsors of clinical trials of FDA-regulated products, including drugs, biologics, and devices, are required to register and disclose certain clinical trial information. Information related to the product, patient population, phase of investigation, study sites and investigators, and other aspects of the clinical trial, is made public as part of the registration. Sponsors also are obligated to discuss the results of their clinical trials after completion. Disclosure of the clinical trial results can be delayed until the new product or new indication being studied has been approved. Competitors may use this publicly available information to gain knowledge regarding the progress of development programs.

The New Drug Application (NDA) Approval Process

Our drug products must be approved by the FDA through the NDA approval process before they may be legally marketed in the U.S. The process required by the FDA before drugs may be marketed in the U.S. generally involves the following:

completion of non-clinical laboratory tests, animal studies and formulation studies conducted according to good laboratory practice or other applicable regulations;

submission of an IND application;

performance of adequate and well-controlled human clinical trials to establish the safety and efficacy of the proposed drug for its intended use or uses conducted in accordance with GCP;

submission to the FDA of an NDA after completion of all pivotal clinical trials;

FDA pre-approval inspection of manufacturing facilities and audit of clinical trial sites; and

FDA approval of an NDA.

In order to obtain approval to market a drug in the U.S., a marketing application must be submitted to the FDA that provides data establishing to the FDA’s satisfaction the safety and effectiveness of the investigational drug for the proposed indication. Each NDA submission requires a substantial user fee payment (exceeding $2.5 million in fiscal year 2019) unless a waiver or exemption applies. The application includes all relevant data available from pertinent non-clinical studies, or preclinical studies and clinical trials, including negative or ambiguous results as well as positive

findings, together with detailed information relating to the product’s chemistry, manufacturing, controls and proposed labeling, among other information. Data can come from company-sponsored clinical trials intended to test the safety and effectiveness of a use of a product, or from a number of alternative sources, including studies initiated by investigators that meet GCP requirements.

Companies also must develop additional information about the chemistry and physical characteristics of the drug and finalize a process for the NDA sponsor’s manufacturing the product in compliance with current good manufacturing practice (cGMP) requirements. The manufacturing process must be capable of consistently producing quality batches of the product candidate, and the manufacturer must develop methods for testing the identity, strength, quality and purity of the finished drug product. Additionally, appropriate packaging must be selected and tested, and stability studies must be conducted to demonstrate that the product candidate does not undergo unacceptable deterioration over its shelf-life.

The results of drug development, non-clinical studies and clinical trials, along with descriptions of the manufacturing process, analytical tests conducted on the chemistry of the drug, proposed labeling and other relevant information are submitted to the FDA as part of an NDA requesting approval to market the product.

The FDA reviews all NDAs submitted to ensure that they are sufficiently complete for substantive review before it accepts them for filing. FDA may request additional information rather than accept an NDA for filing. In this event, the NDA must be resubmitted with the additional information. The resubmitted application also is subject to review before the FDA accepts it for filing. The FDA has 60 days from its receipt of an NDA to conduct an initial review to determine whether the application will be accepted for filing.

If the NDA submission is accepted for filing, the FDA reviews the NDA to determine, among other things, whether the proposed product is safe and effective for its intended use, and whether the product is being manufactured in accordance with cGMP to ensure the product’s identity, strength, quality and purity. The FDA has agreed to specific performance goals on the review of NDAs and seeks to review standard NDAs within 12 months from submission of the NDA. The review process may be extended by the FDA for three additional months to consider certain late submitted information or information intended to clarify information already provided in the submission.

After the FDA evaluates the NDA, it will issue either an approval letter or a Complete Response Letter. An approval letter authorizes commercial marketing of the drug with specific prescribing information for specific indications. A Complete Response Letter indicates that the application is not ready for approval. A Complete Response Letter may require additional clinical data and/or an additional pivotal clinical trial(s), and/or other significant, expensive and time-consuming requirements related to clinical trials, preclinical studies or manufacturing. Even if such additional information is submitted, the FDA may ultimately decide that the NDA does not satisfy the criteria for approval. The FDA may refer applications for novel drug products or drug products that present difficult questions of safety or effectiveness to an advisory committee, typically a panel that includes clinicians and other experts, for review, evaluation and a recommendation as to whether the application should be approved and, if so, under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions.

Before approving an NDA, BLA or PMA, the FDA typically will inspect the facilities where the product is manufactured. The FDA will not approve the product unless it determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the product within required specifications. We currently have

manufacturing facilities at our corporate headquarters, but we intend to facilitate a technology transfer of such functions and obligations to third party contract research organizations, for its clinical materials, and certain of its commercial partners for their commercial supply. Until such time as we no longer manufacture any clinical or commercial supply of product, we must ensure that our facilities satisfy FDA manufacturing requirements. Additionally, before approving an NDA, BLA or PMA, the FDA may inspect one or more clinical sites for compliance with GCP regulations.

If the FDA determines the application, manufacturing process or manufacturing facilities are not acceptable, it typically will outline the deficiencies and often will request additional testing or information. This may significantly delay further review of the application. If the FDA finds that a clinical site did not conduct the clinical trial in accordance with GCP regulations, the FDA may determine the data generated by the clinical site should be excluded from the primary efficacy analyses provided in the NDA. Additionally, notwithstanding the submission of any requested additional information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for approval.

As a condition of approval, the FDA may require, additional clinical trials after a product is approved. These so-called Phase IV or post-approval clinical trials may be a condition for continuing drug approval. The results of Phase IV clinical trials can confirm the effectiveness of a product candidate and can provide important safety information. In addition, the FDA now has express statutory authority to require sponsors to conduct post-marketing trials to specifically address safety issues identified by the agency.

The FDA also has authority to require a Risk Evaluation and Mitigation Strategy (“REMS”) to ensure that the benefits of a drug outweigh its risks. A sponsor may also voluntarily propose a REMS as part of the NDA submission. The need for a REMS is determined as part of the review of the NDA. Elements of a REMS may include “dear doctor letters,” a medication guide, more elaborate targeted educational programs, and in some cases elements to assure safe use (“ETASU”), which is the most restrictive REMS. ETASU can include, but are not limited to, special training or certification for prescribing or dispensing, dispensing only under certain circumstances, special monitoring and the use of patient registries. These elements are negotiated as part of the NDA approval, and in some cases the approval date may be delayed. Once implemented, REMS are subject to periodic assessment and modification.

Changes to some of the conditions established in an approved application, including changes in indications, labeling, manufacturing processes or facilities, may require submission and FDA approval of a new NDA or NDA supplement before the change can be implemented. An NDA supplement for a new indication typically requires clinical data similar to that in the original application, and the FDA uses the same procedures and actions in reviewing NDA supplements as it does in reviewing NDAs.

Even if a product candidate receives regulatory approval, the approval may be limited to specific disease states, patient populations and dosages, or might contain significant limitations on use in the form of warnings, precautions or contraindications, or in the form of onerous risk management plans, restrictions on distribution or post-marketing trial requirements. Further, even after regulatory approval is obtained, later discovery of previously unknown problems with a product may result in restrictions on the product or even complete withdrawal of the product from the market. Delay in obtaining, or failure to obtain, regulatory approval for our products, or obtaining approval but for significantly limited use, would harm our business. Also, new government requirements, including those resulting from new legislation, may be established, or the FDA’s policies may change, which could delay or prevent regulatory approval of our products in development. In addition, we cannot predict what adverse governmental regulations may arise from future U.S. or foreign governmental action.

The Hatch-Waxman Amendments

Under the Drug Price Competition and Patent Term Restoration Act of 1984, as amended, commonly known as the Hatch-Waxman Amendments, a portion of a product’s U.S. patent term that was lost during clinical development and regulatory review by the FDA may be restored. The Hatch-Waxman Amendments also provide a process for listing patents pertaining to approved products in the FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations (commonly known as the Orange Book) and for a competitor seeking approval of an application that references a product with listed patents to make certifications pertaining to such patents. In addition, the Hatch-Waxman Amendments provide for a statutory protection, known as non-patent exclusivity, against the FDA’s acceptance or approval of certain competitor applications.

Patent Term Restoration

Patent term restoration can compensate for time lost during drug development and the regulatory review process by returning up to five years of patent life for a patent that covers a new product or its use. This period is generally one-half the time between the effective date of an IND (falling after issuance of the patent) and the submission date of an NDA, plus the time between the submission date of an NDA and the approval of that application, provided the sponsor acted with diligence. Patent term restorations, however, cannot extend the remaining term of a patent beyond a total of 14 years from the date of product approval and only one patent applicable to an approved drug may be extended and the extension must be applied for prior to expiration of the patent. The USPTO, in consultation with the FDA, reviews and approves the application for any patent term extension or restoration.

Orange Book Listing

In seeking approval for a drug through an NDA, applicants are required to list with the FDA each patent whose claims cover the applicant’s product. Upon approval of a drug, each of the patents listed by the NDA holder in the drug’s application or otherwise are published in the FDA’s Orange Book. Drugs listed in the Orange Book can, in turn, be cited by potential generic competitors in support of approval of an abbreviated new drug application (ANDA). An ANDA permits marketing of a drug product that has the same active ingredient(s) in the same strengths and dosage form as the listed drug and has been shown through bioequivalence testing to be therapeutically equivalent to the listed drug. Other than the requirement for bioequivalence testing, ANDA applicants are not required to conduct, or submit results of, preclinical studies or clinical trials to prove the safety or effectiveness of their drug product. Drugs approved under and ANDA are commonly referred to as “generic equivalents” to the listed drug and can often be substituted by pharmacists under prescriptions written for the original listed drug.

Section 505(b)(2) of the FDCA provides an alternate regulatory pathway to FDA approval for new or improved formulations or new uses of previously approved drug products. Specifically, Section 505(b)(2) permits the filing of an NDA where at least some of the information required for approval comes from studies not conducted by or for the applicant and for which the applicant has not obtained a right of reference.

Any applicant who files an ANDA seeking approval of a generic equivalent version of a drug listed in the Orange Book or a 505(b)(2) NDA referencing a drug listed in the Orange Book must certify to the FDA that (i) no patent information on the drug product that is the subject of the application has been submitted to the FDA; (ii) such patent has expired; (iii) the date on which such patent expires; or (iv) such patent is invalid or will not be infringed upon by the manufacture, use or sale of the drug product for which the application is submitted. This last certification is known as a paragraph IV certification. A notice of the paragraph IV certification must be provided to each owner of the patent

that is the subject of the certification and to the holder of the approved NDA to which the ANDA or 505(b)(2) application refers. The applicant also may elect to submit a “section viii” statement certifying that its proposed label does not contain (or carves out) any language regarding the patented method-of-use rather than certify to a listed method-of-use patent. If the reference NDA holder and patent owners assert a patent challenge directed to one of the Orange Book listed patents within 45 days of the receipt of the paragraph IV certification notice, the FDA is prohibited from approving the application until the earlier of 30 months from the receipt of the paragraph IV certification expiration of the patent, settlement of the lawsuit or a decision in the infringement case that is favorable to the applicant. The ANDA or 505(b)(2) application also will not be approved until any applicable non-patent exclusivity listed in the Orange Book for the branded reference drug has expired.

Market Exclusivity

Market exclusivity provisions under the FDCA also can delay the submission or the approval of certain drug applications. The FDCA provides a five-year period of non-patent marketing exclusivity within the U.S. to the first applicant to gain approval of an NDA for a new chemical entity. A drug is a new chemical entity if the FDA has not previously approved any other new drug containing the same active moiety, which is the molecule or ion responsible for the action of the drug substance. During the exclusivity period, the FDA may not accept for review an ANDA or a 505(b)(2) NDA submitted by another company for another version of such drug where the applicant does not own or have a legal right of reference to all the data required for approval. However, an application may be submitted after four years if it contains a Paragraph IV certification.

The FDCA also provides three years of marketing exclusivity for an NDA, 505(b)(2) NDA or supplement to an existing NDA if new clinical investigations, other than bioavailability studies, were conducted or sponsored by the applicant deemed by the FDA to be essential to the approval of the application, for example, for new indications, dosages or strengths of an existing drug. This three-year exclusivity covers only the conditions associated with the new clinical investigations and does not prohibit the FDA from approving ANDAs for drugs containing the original active ingredient. Five-year and three-year exclusivity will not delay the submission or approval of a full NDA; however, an applicant submitting a full NDA is required to conduct or obtain a right of reference to all of the non-clinical studies and adequate and well-controlled clinical trials necessary to demonstrate safety and effectiveness.

The Biologics License Application (BLA) Approval Process

Our biological products must be approved by the FDA through the BLA approval process before they may be legally marketed in the U.S. The process is similar to the NDA process and generally involves the completion of non-clinical laboratory tests, submission of an IDA application, performance of human clinical trials in accordance with GCP to establish and safety and efficacy of the biological product, submission to the FDA of a BLA after completion of all pivotal clinical trials, FDA pre-approval inspection of manufacturing facilities and audit of clinical trial sites; and FDA approval of a BLA.

The cost of preparing and submitting a BLA is substantial. Each BLA submission requires a user fee payment (exceeding $2.5 million in fiscal year 2019), unless a waiver or exemption applies. The manufacturer or sponsor of an approved BLA is also subject to annual establishment fees.

The FDA has 60 days from its receipt of a BLA to determine whether the application will be accepted for filing based on the agency’s threshold determination that it is sufficiently complete to permit substantive review. Once the submission is accepted for filing, the FDA begins an in-depth review. The FDA has agreed to certain performance goals in the review of BLAs. Most applications for standard review biologics products are reviewed within twelve months of

submission, and most applications for priority review biologics are reviewed within eight months of submission. The review process may be extended by the FDA for three additional months to consider certain late-submitted information, or information intended to clarify information already provided in the submission. Even if such additional information is submitted, the FDA may ultimately decide that the NDA does not satisfy the criteria for approval.

The FDA may also refer applications for novel biologics products or biologics products that present difficult questions of safety or efficacy, to an advisory committee, typically a panel that includes clinicians and other experts, for review, evaluation and a recommendation as to whether the application should be approved. The FDA is not bound by the recommendation of an advisory committee, but it generally follows such recommendations.

Before approving a BLA, the FDA will typically inspect one or more clinical sites to assure compliance with GCP. Additionally, the FDA will inspect the facility or the facilities at which the biologic product is manufactured. The FDA will not approve the BLA unless compliance with cGMP is satisfactory, and the BLA contains data that provide substantial evidence that the biologic is safe and effective for the indication studied. Manufacturers of biologics also must comply with the FDA’s general rules on biological products.

After the FDA evaluates the BLA and the manufacturing facilities, it issues either an approval letter or a complete response letter. A complete response letter outlines the deficiencies in the submission and may require substantial additional testing, including additional large-scale clinical testing or information in order for the FDA to reconsider the application. If, or when, those deficiencies have been addressed to the FDA’s satisfaction in a resubmission of the BLA, the FDA will issue an approval letter. The FDA has committed to reviewing such resubmissions in two or six months depending on the type of information included.

An approval letter authorizes commercial marketing and distribution of the biologic with specific prescribing information for specific indications. As a condition of BLA approval, the FDA may require substantial post-approval testing and surveillance to monitor the product’s safety or efficacy and may impose other conditions, including labeling restrictions, which can materially affect the product’s potential market and profitability. Once granted, product approvals may be withdrawn if compliance with regulatory standards is not maintained or problems or safety issues are identified following initial marketing.

Changes to some of the conditions established in an approved application, including changes in indications, labeling, device components or manufacturing processes or facilities, require submission and FDA approval of a new BLA or BLA supplement before the change can be implemented. A BLA supplement for a new indication typically requires clinical data similar to that in the original application, and the FDA uses the same procedures and actions in reviewing BLA supplements as it does in reviewing BLAs.

Biosimilar Exclusivity

The Biologics Price Competition and Innovation Act of 2009 (BPCIA) creates an abbreviated approval pathway for biosimilar products. A biosimilar is a biological product that is highly similar to and has no clinically meaningful differences from an existing FDA-licensed reference product. Biosimilarity must be shown through analytical studies, animal studies, and at least one clinical study, absent a waiver. A biosimilar product may be deemed interchangeable with a prior licensed product if it is biosimilar and meets additional requirements under the BPCIA, including that it can be expected to produce the same clinical results as the reference product and, for products administered multiple times, the biologic and the reference biologic may be switched after one has been previously

administered without increasing safety risks or risks of diminished efficacy relative to exclusive use of the reference biologic. An interchangeable product may be substituted for the reference product without the involvement of the prescriber.

A reference biologic is granted twelve years of exclusivity from the time of first licensure of the reference product, and no application for a biosimilar may be submitted for four years from the date of licensure of the reference product. The first biologic product submitted under the abbreviated approval pathway that is determined to be interchangeable with the reference product may obtain exclusivity against a finding of interchangeability for other biologics for the same condition of use for the lesser of (i) one year after first commercial marketing of the first interchangeable biosimilar; (ii) eighteen months after the first interchangeable biosimilar is approved if there is no patent challenge; (iii) eighteen months after resolution of a lawsuit over the patents of the reference biologic in favor of the first interchangeable biosimilar applicant; or (iv) 42 months after the first interchangeable biosimilar’s application has been approved if a patent lawsuit is ongoing within the 42-month period.

FDA Regulation of Medical Devices

Medical devices are subject to extensive and rigorous regulation by the FDA under the FDCA, as well as other federal and state regulatory bodies in the United States, and laws and regulations of foreign authorities in other countries. FDA requirements specific to medical devices are wide ranging and govern, among other things:

design, development and manufacturing;

testing, labeling and storage;

clinical trials in humans;

product safety;

marketing, sales and distribution;

premarket clearance or approval;

record keeping procedures;

advertising and promotion;

post-market surveillance, including reporting of deaths or serious injuries and malfunctions that, if they were to recur, could lead to serious injury or death; and

product export.

Unless an exemption applies, medical devices distributed in the United States must receive either premarket clearance under Section 510(k) of the FDCA or premarket approval of a premarket application (PMA). Medical devices are classified into one of three classes—Class I, Class II, or Class III—depending on the degree or risk associated with each medical device and the extent of control needed to ensure safety and effectiveness. Medical devices deemed to pose relatively low risk are placed in either Class I or II, which generally requires the manufacturer to submit a premarket notification under Section 510(k) of the FDCA requesting permission for commercial distribution. Some low risk devices are exempted from this premarket requirement. Devices deemed by the FDA to pose the greatest risk, such as life-sustaining, life-supporting or implantable devices, or devices deemed not substantially equivalent to a previously 510(k) cleared device, or to a “preamendment device”—i.e., a device that was in commercial distribution before May 28, 1976 for which the FDA has not yet called for submission of PMA applications—are placed in Class III requiring PMA approval.

Clinical Studies of Medical Devices under an Investigational Device Exemption (IDE)

A clinical trial is almost always required to support a PMA. All clinical investigations of investigational devices must be conducted in accordance with the FDA’s investigational device

exemption (IDE) regulations, which govern investigational device labeling, prohibit promotion of the investigational device, and specify recordkeeping, reporting and monitoring responsibilities of study sponsors and study investigators.

If the device presents a “significant risk” to human health (as defined in the regulations), the FDA requires the device sponsor to submit an IDE application to the FDA, which must become effective prior to commencing human clinical trials. A significant risk device is one that presents a potential for serious risk to the health, safety or welfare of a patient and either is implanted, used in supporting or sustaining human life, substantially important in diagnosing, curing, mitigating or treating disease or otherwise preventing impairment of human health, or otherwise presents a potential for serious risk to a subject. A nonsignificant risk device does not require FDA approval of an IDE. Both significant risk and nonsignificant risk investigational devices require approval from institutional review boards (IRBs) at the study centers where the device will be used. There can be no assurance that submission of an IDE will result in the ability to commence clinical trials.

An IDE application must be supported by appropriate data, such as animal and laboratory test results, showing that it is safe to test the device in humans and that the testing protocol is scientifically sound. The IDE will automatically become effective 30 days after receipt by the FDA unless the FDA notifies the company that the investigation may not begin. If the FDA determines that there are deficiencies or other concerns with an IDE for which it requires modification, the FDA may permit a clinical trial to proceed under a conditional approval.

During the study, the sponsor must comply with the FDA’s IDE requirements for investigator selection, trial monitoring, reporting and record keeping. The investigators must obtain patient informed consent, rigorously follow the investigational plan and study protocol, control the disposition of investigational devices, and comply with all reporting and record keeping requirements. The sponsor, the FDA or the IRB at each site at which a clinical trial is being conducted may suspend a clinical trial at any time for various reasons, including a belief that the risks to study subjects outweigh the benefits. Even if a trial is completed, the results of clinical testing may not demonstrate the safety and efficacy of the device, or may otherwise not be sufficient to obtain approval of the product.

The Premarket Application (PMA) Approval Pathway

A product not eligible for 510(k) clearance must follow the PMA approval pathway, which requires evidence of the safety and effectiveness of the device to the FDA’s satisfaction. FDA aims to review PMAs within 12 months, but approval in practice could take much longer.

A PMA application must provide extensive preclinical and clinical trial data and information about the device and its components regarding, among other things, device design, manufacturing and labeling. As part of the PMA review, the FDA typically will inspect the manufacturer’s facilities for compliance with Quality System Regulation (QSR) requirements, which impose requirements for design and development, manufacturing, testing, labeling, packaging, distribution, and documentation and other quality assurance procedures.

Upon submission, the FDA determines if the PMA application is sufficiently complete to permit a substantive review, and, if so, the application is accepted for filing. The FDA then commences an in-depth review of the PMA application, which typically takes one to three years, but may last longer. An advisory panel of experts from outside the FDA is typically convened to review and evaluate the PMA applications and provide recommendations to the FDA as to the approval of the device. Even after approval of a PMA, a new PMA or PMA supplement is required in the event of a modification to the device, its labeling or its manufacturing process.

Post-Marketing Requirements for FDA Regulated Products

Following approval of a new product, the company and the approved products are subject to continuing regulation by the FDA, state and foreign regulatory authorities including, among other things, monitoring and record-keeping activities, reporting adverse experiences to the applicable regulatory authorities, providing regulatory authorities with updated safety and efficacy information, manufacturing products in accordance with cGMP requirements, product sampling and distribution requirements, and complying with promotion and advertising requirements, which include, among others, standards for direct-to-consumer advertising and restrictions on promoting products for uses or in patient populations that are not consistent with the drug’s approved labeling (known as “off-label use”), limitations on industry-sponsored scientific and educational activities and requirements for promotional activities involving the internet, including social media. Although physicians may prescribe products for off-label uses, manufacturers may not market or promote such off-label uses. Modifications or enhancements to the product or its labeling or changes of the site of manufacture are often subject to the approval of the FDA and other regulators, who may or may not grant approval, or may include in a lengthy review process.

The FDA, state and foreign regulatory authorities have broad enforcement powers. Failure to comply with applicable regulatory requirements could result in enforcement action by the FDA, state or foreign regulatory authorities, which may include the following:

untitled letters or warning letters;

fines, disgorgement, restitution or civil penalties;

injunctions (e.g., total or partial suspension of production) or consent decrees;

product recalls, administrative detention, or seizure;

customer notifications or repair, replacement or refunds;

operating restrictions or partial suspension or total shutdown of production;

delays in or refusal to grant requests for future product approvals or foreign regulatory approvals of new products, new intended uses, or modifications to existing products;

withdrawals or suspensions of FDA product marketing approvals or foreign regulatory approvals, resulting in prohibitions on product sales;

clinical holds on clinical trials;

FDA refusal to issue certificates to foreign governments needed to export products for sale in other countries; and

criminal prosecution.

Any of these sanctions could result in higher than anticipated costs or lower than anticipated sales and have a material adverse effect on our reputation, business, financial condition and results of operations. Such actions by government agencies could also require us to expend a large amount of resources to respond to the actions. Any agency or judicial enforcement action could have a material adverse effect on us.

In the U.S., after a product is approved, its manufacture is subject to comprehensive and continuing regulation by the FDA. The FDA regulations require that products be manufactured in registered facilities and in accordance with cGMP. We expect to rely on third parties for the production of clinical and commercial quantities of our products in accordance with cGMP regulations. cGMP regulations require, among other things, quality control and quality assurance as well as the corresponding maintenance of records and documentation and the obligation to investigate and correct

deviations from cGMP. These regulations also impose certain organizational, procedural and documentation requirements with respect to manufacturing and quality assurance activities. Manufacturers and other entities involved in the manufacture and distribution of approved drugs, biologics and medical devices are required to register their establishments with the FDA and certain state agencies and are subject to periodic unannounced inspections by the FDA and state agencies for compliance with cGMP and other laws. Accordingly, manufacturers must continue to expend time, money and effort in the area of production and quality control to maintain cGMP compliance.

NDA/BLA/PMA holders using contract manufacturers, laboratories or packagers are responsible for the selection and monitoring of qualified firms and, in certain circumstances, suppliers to these firms. These firms and, where applicable, their suppliers are subject to inspections by the FDA at any time, and the discovery of violative conditions, including failure to conform to cGMP, could result in enforcement actions that can interrupt the operation of any such firm or result in restrictions on product supply, including, among other things, recall or withdrawal of the product from the market.

Newly-discovered or developed safety or effectiveness data may require changes to a product’s approved labeling, including the addition of new warnings and contraindications, and also may require the implementation of other risk management measures.

Reimbursement, Anti-Kickback and False Claims Laws and Other Regulatory Matters

In the U.S., the research, manufacturing, distribution, sale and promotion of drug products and medical devices are potentially subject to regulation by various federal, state and local authorities in addition to the FDA, including the Centers for Medicare & Medicaid Services (“CMS”), other divisions of the U.S. Department of Health and Human Services (e.g., the Office of Inspector General), the Drug Enforcement Administration, the Consumer Product Safety Commission, the Federal Trade Commission, the Occupational Safety & Health Administration, the Environmental Protection Agency, state Attorneys General and other state and local government agencies. For example, sales, marketing and scientific/educational grant programs must comply with the federal Anti-Kickback Statute, the federal False Claims Act, the privacy regulations promulgated under HIPAA, and similar state laws. Pricing and rebate programs must comply with the Medicaid Drug Rebate Program requirements of the Omnibus Budget Reconciliation Act of 1990, as amended, and the Veterans Health Care Act of 1992, as amended. If products are made available to authorized users of the Federal Supply Schedule of the General Services Administration, additional laws and requirements apply. The handling of any controlled substances must comply with the U.S. Controlled Substances Act and Controlled Substances Import and Export Act. Products must meet applicable child-resistant packaging requirements under the U.S. Poison Prevention Packaging Act. All of these activities are also potentially subject to federal and state consumer protection and unfair competition laws.

The Medicare Modernization Act (MMA) established the Medicare Part D program to provide a voluntary prescription drug benefit to Medicare beneficiaries. Under Part D, Medicare beneficiaries may enroll in prescription drug plans offered by private entities which will provide coverage of outpatient prescription drugs. Unlike Medicare Part A and B, Part D coverage is not standardized. Part D prescription drug plan sponsors are not required to pay for all covered Part D drugs, and each drug plan can develop its own drug formulary that identifies which drugs it will cover and at what tier or level. However, Part D prescription drug formularies must include drugs within each therapeutic category and class of covered Part D drugs, though not necessarily all the drugs in each category or class. Any formulary used by a Part D prescription drug plan must be developed and reviewed by a pharmacy and therapeutic committee. Government payment for some of the costs of prescription drugs may increase demand for products for which we receive regulatory approval. However, any negotiated prices for our products covered by a Part D prescription drug plan will likely be lower than the prices we might otherwise obtain. Moreover, while the MMA applies only to drug benefits for Medicare beneficiaries,

private payors often follow Medicare coverage policy and payment limitations in setting their own payment rates. Any reduction in payment that results from the MMA may result in a similar reduction in payments from non-government payors.

The distribution of pharmaceutical products is subject to additional requirements and regulations, including extensive record-keeping, licensing, storage and security requirements intended to prevent the unauthorized sale of pharmaceutical products.

The American Recovery and Reinvestment Act of 2009 provides funding for the federal government to compare the effectiveness of different treatments for the same illness. A plan for the research will be developed by the Department of Health and Human Services, the Agency for Healthcare Research and Quality and the National Institutes for Health, and periodic reports on the status of the research and related expenditures will be made to Congress. Although the results of the comparative effectiveness studies are not intended to mandate coverage policies for public or private payors, it is not clear what effect, if any, the research will have on the sales of our product candidates, if any such product or the condition that it is intended to treat is the subject of a clinical trial. It is also possible that comparative effectiveness research demonstrating benefits in a competitor’s product could adversely affect the sales of our product candidates. If third-party payors do not consider our products to be cost-effective compared to other available therapies, they may not cover our products after approval as a benefit under their plans or, if they do, the level of payment may not be sufficient to allow us to sell our products on a profitable basis.

In addition, in some foreign countries, the proposed pricing for a drug must be approved before it may be lawfully marketed. The requirements governing drug pricing vary widely from country to country. For example, the European Union provides options for its member states to restrict the range of medicinal products for which their national health insurance systems provide reimbursement and to control the prices of medicinal products for human use. A member state may approve a specific price for the medicinal product or it may instead adopt a system of direct or indirect controls on the profitability of the company placing the medicinal product on the market. There can be no assurance that any country that has price controls or reimbursement limitations for pharmaceutical products will allow favorable reimbursement and pricing arrangements for any of our products. Historically, products launched in the European Union do not follow price structures of the U.S. and generally tend to be priced significantly lower than in the U.S.

As noted above, in the U.S., we are subject to complex laws and regulations pertaining to healthcare “fraud and abuse,” including, but not limited to, the federal Anti-Kickback Statute, the federal False Claims Act, and other state and federal laws and regulations. The federal Anti-Kickback Statute makes it illegal for any person, including a prescription drug manufacturer, or a party acting on its behalf, to knowingly and willfully solicit, receive, offer or pay any remuneration that is intended to induce the referral of business, including the purchase, order or prescription of a particular drug, or other good or service for which payment in whole or in part may be made under a federal healthcare program, such as Medicare or Medicaid. Violations of this law are punishable by up to five years in prison, criminal fines, administrative civil money penalties and exclusion from participation in federal healthcare programs. In addition, many states have adopted laws similar to the federal Anti-Kickback Statute. Some of these state prohibitions apply to the referral of patients for healthcare services reimbursed by any insurer, not just federal healthcare programs such as Medicare and Medicaid. Due to the breadth of these federal and state anti-kickback laws, the absence of guidance in the form of regulations or court decisions and the potential for additional legal or regulatory change in this area, it is possible that our future sales and marketing practices or our future relationships with medical professionals might be challenged under anti-kickback laws, which could harm us.

The federal False Claims Act prohibits anyone from knowingly presenting, or causing to be presented, for payment to federal programs (including Medicare and Medicaid) claims for items or

services, including drugs, that are false or fraudulent, claims for items or services not provided as claimed or claims for medically unnecessary items or services. Although we would not submit claims directly to payors, manufacturers can be held liable under these laws if they are deemed to “cause” the submission of false or fraudulent claims by, for example, providing inaccurate billing or coding information to customers or promoting a product off-label. In addition, our future activities relating to the reporting of wholesaler or estimated retail prices for our products, the reporting of prices used to calculate Medicaid rebate information and other information affecting federal, state and third-party reimbursement for our products, and the sale and marketing of our products, are subject to scrutiny under this law. For example, pharmaceutical companies have been found liable under the federal False Claims Act in connection with their off-label promotion of drugs. Penalties for a federal False Claims Act violation include three times the actual damages sustained by the government, plus mandatory civil penalties of between $11,181 and $22,363 for each separate false claim, the potential for exclusion from participation in federal healthcare programs and, although the federal False Claims Act is a civil statute, conduct that results in a federal False Claims Act violation may also implicate various federal criminal statutes. If the government were to allege that we were, or convict us of, violating these false claims laws, we could be subject to a substantial fine. In addition, private individuals have the ability to bring actions under the federal False Claims Act and certain states have enacted laws modeled after the federal False Claims Act.

There are also an increasing number of state laws that require manufacturers to make reports to states on pricing and marketing information. Many of these laws contain ambiguities as to what is required to comply with the laws. In addition, as discussed below, a similar federal requirement requires manufacturers to track and report to the federal government certain payments made to physicians and teaching hospitals in the previous calendar year. These laws may affect our sales, marketing and other promotional activities by imposing administrative and compliance burdens on us. In addition, given the lack of clarity with respect to these laws and their implementation, our reporting actions could be subject to the penalty provisions of the pertinent state, and soon federal, authorities.

The failure to comply with regulatory requirements subjects companies to possible legal or regulatory action. Depending on the circumstances, failure to meet applicable regulatory requirements can result in criminal prosecution, fines or other penalties, injunctions, recall or seizure of products, total or partial suspension of production, denial or withdrawal of product approvals or refusal to allow a company to enter into supply contracts, including government contracts.

Changes in regulations, statutes or the interpretation of existing regulations could impact our business in the future by requiring, for example: (1) changes to our manufacturing facility; (2) additions or modifications to product labeling; (3) the recall or discontinuation of our products; or (4) additional record-keeping requirements. If any such changes were to be imposed, they could adversely affect the operation of our business.

Patient Protection and Affordable Care Act

In March 2010, the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act of 2010, collectively the PPACA, was enacted, which includes measures that have or will significantly change the way healthcare is financed by both governmental and private insurers. Among the provisions of the PPACA of greatest importance to the pharmaceutical industry are the following:

The Medicaid Drug Rebate Program requires pharmaceutical manufacturers to enter into and have in effect a national rebate agreement with the Secretary of the Department of Health and Human Services as a condition for states to receive federal matching funds for the manufacturer’s covered outpatient drugs furnished to Medicaid patients. Effective in 2010, the PPACA made several changes to the Medicaid Drug Rebate Program, including

increasing pharmaceutical manufacturers’ rebate liability by raising the minimum basic Medicaid rebate on most branded prescription drugs and biologic agents to 23.1% of the AMP and adding a new rebate calculation for “line extensions” (i.e., new formulations, such as extended release formulations) of solid oral dosage forms of branded products, as well as potentially impacting their rebate liability by modifying the statutory definition of AMP. The PPACA also expanded the universe of Medicaid utilization subject to drug rebates by requiring pharmaceutical manufacturers to pay rebates on Medicaid managed care utilization and by expanding the population potentially eligible for Medicaid drug benefits. The CMS have proposed to expand Medicaid rebate liability to the territories of the U.S. as well. In addition, the PPACA provides for the public availability of retail survey prices and certain weighted average AMPs under the Medicaid program. The implementation of this requirement by the CMS may also provide for the public availability of pharmacy acquisition of cost data, which could negatively impact our sales.

In order for a pharmaceutical product to receive federal reimbursement under the Medicare Part B and Medicaid programs or to be sold directly to U.S. government agencies, the manufacturer must extend discounts to entities eligible to participate in the 340B drug pricing program. The required 340B discount on a given product is calculated based on the AMP and Medicaid rebate amounts reported by the manufacturer. The PPACA expanded the types of entities eligible to receive discounted 340B pricing, although, under the current state of the law, with the exception of children’s hospitals, these newly-eligible entities will not be eligible to receive discounted 340B pricing on orphan drugs when used for the orphan indication. In addition, as 340B drug pricing is determined based on AMP and Medicaid rebate data, the revisions to the Medicaid rebate formula and AMP definition described above could cause the required 340B discount to increase.

 

  

Evaluate strategic partnershipsThe PPACA imposes a requirement on manufacturers of branded drugs and biologic agents to maximizeprovide a 50% discount off the commercial potentialnegotiated price of emricasan. We planbranded drugs dispensed to evaluate opportunities to partner emricasan with pharmaceutical companies that have established sales and marketing capabilitiesMedicare Part D patients in regions outside of North America and Europe. We may also partner with a pharmaceutical company that has global capabilities to evaluate emricasan in non-orphan indications for which we believe it may also be effective, such as liver fibrosis from viral hepatitis, alcoholic hepatitis and non-alcoholic steatohepatitis, or NASH.the coverage gap (i.e., “donut hole”).

Overview

The PPACA imposes an annual, nondeductible fee on any entity that manufactures or imports certain branded prescription drugs and biologic agents, apportioned among these entities according to their market share in certain government healthcare programs, although this fee would not apply to sales of Liver Diseasecertain products approved exclusively for orphan indications.

The liverPPACA requires pharmaceutical manufacturers to track certain financial arrangements with physicians and teaching hospitals, including any “transfer of value” made or distributed to such entities, as well as any investment interests held by physicians and their immediate family members. Manufacturers are required to track this information and were required to make their first reports in March 2014. The information reported is publicly available on a searchable website.

As of 2010, a new Patient-Centered Outcomes Research Institute was established pursuant to the largest internal organPPACA to oversee, identify priorities in and conduct comparative clinical effectiveness research, along

with funding for such research. The research conducted by the human bodyPatient-Centered Outcomes Research Institute may affect the market for certain pharmaceutical products.

The PPACA created the Independent Payment Advisory Board, which has the authority to recommend certain changes to the Medicare program to reduce expenditures by the program that could result in reduced payments for prescription drugs. Under certain circumstances, these recommendations will become law unless Congress enacts legislation that will achieve the same or greater Medicare cost savings.

The PPACA established the Center for Medicare and its proper function is indispensable for many critical metabolic functions,Medicaid Innovation within CMS to test innovative payment and service delivery models to lower Medicare and Medicaid spending, potentially including prescription drug spending. Funding has been allocated to support the regulation of lipid and sugar metabolism, the production of important proteins, including those involved in blood clotting, and purification of blood. There are over 100 described diseasesmission of the liver,Center for Medicare and becauseMedicaid Innovation from 2011 to 2019.

Many of its many functions, thesethe details regarding the implementation of the PPACA are yet to be determined, and, at this time, the full effect of the PPACA on our business remains unclear. Further, there have been recent public announcements by members of the U.S. Congress, President Trump and his administration regarding their plans to repeal and replace the PPACA. For example, on December 22, 2017, President Trump signed into law the Tax Cuts and Jobs Act of 2017, which, among other things, eliminated the individual mandate requiring most Americans (other than those who qualify for a hardship exemption) to carry a minimum level of health coverage, effective January 1, 2019. We cannot predict the ultimate form or timing of any repeal or replacement of the PPACA or the effect such a repeal or replacement would have on our business.

Chemistry, Manufacturing, and Controls

We have successfully developed production processes that are scalable and economically viable. All of the derivatives of the manufacturing process can be highly debilitating and life-threatening unless effectively treated. Common causesused, creating a spectrum of liver disease include viral infections, such as HCV and HBV, obesity, chronic excessive alcohol use or autoimmune diseases. Many people with active liver disease remain undiagnosed largely because liver disease patients are often asymptomaticproducts for many years. The NIH estimates that 5.5 million Americans have chronic liver disease or cirrhosis, and liver disease is the twelfth leading cause of death in the United States. According to the EASL, 29 million Europeans have chronic liver disease and liver disease represents approximately two percent of deaths annually.

Liver disease is often first detected as active hepatitis, which is defined as inflammation of the liver. Hepatitis is easily detected by a routine laboratory test to measure blood levels of the liver enzyme ALT. ALT is elevated in almost all liver diseases and represents an overall measure of liver inflammation and liver cell death. As liver disease progresses, fibrotic scar tissue will begin to replace healthy liver tissue and over time will reduce the liver’s ability to function properly. A liver biopsy is used to diagnose fibrosis and determine how much liver scarring has developed. If fibrosis is allowed to progress, it will lead to cirrhosis. As liver cirrhosis becomes progressively worse, all aspects of liver function will dramatically decline.

Some patients with liver cirrhosis have a partially functioning liver, which is referred to as compensated liver disease, and may appear asymptomatic for long periods of time. When the liver is unable to perform its normal functions this is referred to as decompensated liver disease. ACLF occurs in patients who are in relatively stable condition until an acute event sets off a rapid deterioration of liver function. The morbidity and mortality of the patient population with ACLF we plan to study is high, with approximately 45% of patients dying or progressing to multi-organ failure or requiring transplant within 28 days of hospitalization as a result of the acute decompensating episode. If the patient survives the acute decompensating event, they may return to a stable state. Patients with CLF suffer from continual disease progression which may eventually lead them to require liver transplantation. Despite advances in liver transplantation, morbidity and mortality in the CLF patient population remains high with some patients ineligible for a liver transplant and others unable to be matched with a suitable donor liver.

Patients who receive liver transplants as a result of HCV infection are at risk of accelerated fibrosis of the transplanted liver. This occurs because residual HCV is still present in the patient’s blood and can immediately infect the new liver, thus increasing the risk of accelerated inflammation and fibrosis. This patient population is referred to as HCV-POLT. Liver fibrosis can be scored using the standard Ishak Fibrosis Score, which stages the

severity of fibrosis and/or cirrhosis on a 0-6 scale. Approximately 55% of the patient population we plan to study will progress more than one stage in fibrosis score within two years of transplant and 50% of these HCV-POLT patients will have stage 3 fibrosis within five years after their transplants. If emricasan demonstrates the ability to halt the progression of fibrosis in the HCV-POLT population, we believe that this could serve as a basis to evaluate emricasan for additional indications in patients at earlier stages of liver fibrosis resulting from HCV, HBV, obesity, chronic excessive alcohol use or autoimmune diseases.

The Role of Apoptosis, Necrosis and Inflammation in Liver Disease

The death of cells and resulting inflammation play an important role in the progression of many liver diseases. In general, cells can die by either of two major mechanisms, apoptosis, a form of programmed cell death, or necrosis. Both of these mechanisms can produce a state of acute and/or chronic inflammation as shown in Figure 1.

Figure 1. Apoptosis and Necrosis: The Two Main Pathways of Liver Cell Death

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High levels of noxious stimuli can rapidly overwhelm the cell’s natural protective mechanisms, leading to a rupture of the cell and subsequent release of its contents into the surrounding tissue. This process is known as necrosis and results in a highly pro-inflammatory response, further damaging the surrounding tissue. In contrast, the programmed cell death mechanism, termed apoptosis, is a highly controlled and tightly regulated process that involves the orderly condensation and dismantling of the cell leading to its subsequent rapid and specific removal from the surrounding tissue by specialized cells. However, under conditions of excessive stress as often observed in disease, the production of apoptotic cells outpaces the body’s ability to effectively remove them from the surrounding tissue. This results in an accumulation of shed cell fragments known as apoptotic bodies which are taken up by surrounding cells and can stimulate additional cell death. Disease-driven excessive apoptosis results in the development of scar tissue or fibrosis which can lead to tissue destruction and eventually reduce the capacity of an organ to function normally.

Markers of Liver Cell Death

ALT is an enzyme that is produced in liver cells and is naturally found in the blood of healthy individuals. In liver disease, liver cells are damaged and as a consequence, ALT is released into the blood increasing ALT levels above the normal range. Physicians routinely test blood levels of ALT to monitor the health of a patient’s liver. ALT level is a clinically important biochemical marker of the severity of liver inflammation and ongoing liver disease. Elevated levels of ALT represent general markers of liver cell death and inflammation without regard to any specific mechanism. Aspartate aminotransferase, or AST, is a second enzyme found in the blood that is produced in the liver and routinely measured by physicians along with ALT. As with ALT, AST is often elevated in liver disease and, like ALT, is considered an overall marker of liver inflammation. We have measured both ALT and AST levels in our clinical studies, and have observed similar effects of emricasan on both enzymes. However, because ALT is considered more liver specific and the pattern of changes we have observed in AST levels has been similar to those seen in ALT levels, our discussion will focus primarily on ALT.

Another important marker of liver cell death is a protein fragment called cCK18. During apoptosis, a key structural protein within the cell called Cytokeratin 18, or CK18, is specifically cleaved by caspases which results in the release of cCK18 into the blood stream. cCK18 is easily detected in the blood with a commercially-available test and is a mechanism-specific biomarker of apoptosis and caspase activity. Importantly, cCK18 is also present in healthy subjects and multiple studies have demonstrated an approximate basal level in healthy subjects.

Numerous independent clinical trials and published studies have demonstrated the utility of cCK18 for detecting and gauging the severity of ongoing liver disease across a variety of disease etiologies. These studiesmarkets from one core technology.

We have demonstrated correlations between diseaseestablished in-house research, development and cCK18 levelsmanufacturing capabilities in patientsour corporate headquarters, however, we do not intend to continue manufacturing commercial or clinical material in-house moving forward. We intend to secure manufacturing agreements with ACLF, CLF, HCV, NASHa contract research organization for our own clinical and various other liver disease indications. For example, it has been shown that in HCV patients,commercial supply. Currently, we are not a party to any manufacturing agreements.

We currently manufacture commercial quantities of our CCM skin care ingredient for Allergan, who formulates the severity of liver disease was correlated with cCK18 levels and apoptosis, such that the more severe the disease, the higher the serum level of cCK18. In ACLF patients, studies have shown that blood levels of cCK18 were higher in non-surviving patients than in patients that survived. In CLF patients, studies have shown that cCK18 levelsingredient into their skin care product lines. However, we are elevated and correlate with liver inflammation and cholestasis. In patients with recurrent HCV-POLT, it has been shown that cCK18 levels and apoptosis were significantly elevated in liver biopsies as determined by immunohistochemical analysis. We believe these studies demonstrate the relationship between elevated cCK18 levels and severity of liver disease and that cCK18 is a valid and important biomarker of excessive apoptosis in liver disease.

The Model for End-Stage Liver Disease, or MELD, is a scoring system for assessing the severity of chronic liver disease. MELD is a composite score that is calculated using bilirubin levels, creatinine levels and International Normalized Ratio, or INR, which is a tool for assessing blood clotting times. MELD scores, which range from 6-40, are considered to be a valuable predictor of three-month survival. MELD score is also generally used to prioritize patients on the liver transplant list, with the average MELD score of 20 in patients undergoing liver transplant. In our planned clinical trials, we will study a subset of patients with ACLF and CLF who have MELD scores ranging from 20 to 30.

Emricasan

Emricasan is a first-in-class, proprietary and orally active caspase protease inhibitor designed to slow or halt the progression of chronic liver disease caused by fibrosis and cirrhosis. To date, emricasan has been administered to over 500 subjects in six Phase 1 and four Phase 2 clinical trials, and has been generally well-tolerated in both healthy volunteers and patients with liver disease. Emricasan has also been extensively profiled inin vitro tests and studied in many preclinical models of human disease.

Mechanism of Action

Emricasan works by inhibiting caspases, which are a family of related enzymes that play an important role as modulators of critical cellular functions, including functions that result in apoptosis and inflammation. Caspase activation and regulation is tightly controlled through a number of mechanisms. All caspases are expressed as enzymatically inactive forms known as pro-caspases which can be activated following a variety of cellular insults or stimuli. Seven caspases are specifically involved in the process of apoptosis while three caspases specifically activate pro-inflammatory cytokines and are not directly involvedconducting a technology transfer to Allergan, which will enable our commercial partner to utilize their own or third-party facilities. We anticipate exiting the commercial manufacturing business in apoptosis as shown in Figure 2.

Figure 2. Emricasan is a Potent Inhibitor of Apoptotic and Inflammatory Caspases

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Caspase mediated apoptosis is driven primarily by the activity of caspases 3 and 7 which, by virtue of their enzymatic activity, cleave a wide variety of cellular proteins and result in dismantling of the cell. Other apoptotic caspase family members are principally involved in sensing and transmitting signals from either outside or inside the cell. These signals converge to activate pro-caspases 3 and 7, enabling them to carry out the process of apoptosis.

CK18 is one key structural protein that is cleaved by caspases 3 and 7 in a highly specific manner. The product of this cleavage is a small protein fragment, cCK18. This fragment is contained within the apoptotic cell fragments and is easily detected in serum using a commercially available monoclonal antibody assay. This monoclonal antibody, M30, is used routinely in clinical studies as a measure of apoptosis.

While healthy individuals have normal levels of apoptosis, excessive levels of apoptosis associated with disease can overwhelm the body’s normal clearance mechanisms. Reducing excessive levels of apoptosis reestablishes balance between apoptotic activity and normal clearance mechanisms and brings inflammation and other drivers of disease progression under control. As a result, we believe targeting caspases that drive both apoptosis and inflammation in disease offers a unique and potentially powerful therapeutic approach for the treatment of both acute and chronic liver disease.

Testing inin vitroenzyme assays demonstrated that emricasan efficiently inhibits all human caspases at low nanomolar concentrations. Preclinical studies have demonstrated that emricasan is highly selective for the caspase family of enzymes with little to no activity against other enzyme systems. These studies have also shown that emricasan potently inhibits the apoptosis of cells regardless of the apoptotic stimuli and that it is a potent inhibitor of caspase-mediated pro-inflammatory cytokines. Emricasan has been examined in various preclinical models of liver disease. In these models, caspase activity was demonstrated to be inhibited, as determined by histological examination, in liver tissue. Based on our evaluation of emricasan inin vitro systems, cellular assays and disease models, we believe emricasan’s mechanism of action has been well characterized.

Clinical Data

2021. To date, emricasan has been studied in over 500 subjects in six Phase 1 clinical trialswe have successfully transferred our process with two third-party contract manufacturing organizations (CMOs) and four Phase 2 clinical trials. This includes a total of 153 healthy volunteers, 306 subjects with elevated ALT levels and 53 liver transplant subjects receiving single or multiple doses of emricasan ranging from 1 to 500 mg per day orally or 0.1 to 10 mg/kg per day intravenously for up to 12 weeks. Emricasan has demonstrated evidence of a beneficial effect on serological biomarkers in patients with chronic liver disease independent of the cause of disease. Favorable changes have been observed in functional biomarkers of liver damage and inflammation, such as ALT and AST, and mechanistic biomarkers, such as cCK18 and caspase activity, indicating that emricasan works by the presumed mechanism of action of inhibiting apoptosis of liver cells. Importantly, clinical trials have also

demonstrated that emricasan does not inhibit normal levels of caspase activity in healthy individuals. Emricasan has been generally well-tolerated in clinical trials completed to date.

Phase 2b Dose Response Study in HCV Patients (Study A8491003)

Study A8491003, or the 003 trial, was a Phase 2b, randomized, multicenter, placebo-controlled, double-blind, parallel group, dose response trial. The trial was designed to evaluate the safety and efficacy of emricasan in patients with chronic HCV infection who were unresponsive to antiviral therapy and who had compensated liver disease with or without fibrosis. Patients with cirrhosis or hepatocellular carcinoma were excluded from the trial. The trial enrolled 204 HCV patients across three oral emricasan dose arms of twice-daily, or BID, 5 mg, 25 mg and 50 mg and one placebo arm. The primary endpoint in the study was changes from Baseline in ALT and AST levels over a period of 12 weeks. This study also measured cCK18 levels, and caspase 3 and 7 activity as exploratory biomarkers. In this trial, emricasan treatment resulted in statistically significant reductions in the primary endpoints of ALT and AST levels as well as statistically significant reductions in cCK18 levels and caspase 3 and 7 activity.

As shown in Figure 3 below, the changes in ALT demonstrated in the 003 trial were statistically significant in each of the emricasan treatment groups compared with the placebo group. The decreases in ALT were seen by day 7, the first time post-dosing that ALT was measured, and the decreases were maintained throughout the treatment period (up to 12 weeks) in all emricasan treatment groups. Discontinuation of emricasan at the end of the treatment period was followed by a gradual return of ALT towards baseline levels.

Figure 3. Change in ALT (Mean ± SEM(1)) from Baseline Following BID Dosing in Subjects with HCV

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(1)

Standard Error of the Mean.

(2)

Upper limit of normal for males.

In addition to ALT levels, the 003 trial also examined changes in AST levels. As shown in Figure 4 below, the reductions in AST levels demonstrated in the 003 trial were also statistically significant in each of the emricasan treatment groups compared with the placebo group. Consistent with the ALT results, reductions in AST levels were seen as early as seven days and were maintained throughout the treatment period. At the end of treatment

AST levels gradually returned to baseline levels. During the 003 trial, biochemical flare, which is defined as ALT or AST values twice as high as the baseline value while on emricasan treatment, or overshoot, which is defined as ALT or AST values twice as high as the baseline value after stopping emricasan treatment, occurred in patients randomized to both placebo and emricasan. Twenty-one patients in the trial experienced flare and/or overshoot; six of these patients had both flare and overshoot; six of these patients had flare only; and nine of these patients had overshoot only. Of the six patients with flare and overshoot, four were in the placebo group, one was in the 5 mg group, and one was in the 25 mg group. Of the six patients with flare only, two were in the placebo group, one was in the 5 mg group, and three were in the 50 mg group. Of the nine patients with overshoot only, one was in the placebo group, five were in the 5 mg group, two were in the 25 mg group, and one was in the 50 mg group. These data suggest that the occurrence may be part of the natural variability of ALT or AST levels in the patient population under study. All subjects were followed up until levels had returned to baseline levels and there were no reports by the investigator of any clinical concern.

Figure 4. Change in AST (Mean ± SEM(1)) from Baseline Following BID Dosing in Subjects with HCV

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(1)

Standard Error of the Mean.

(2)

Upper limit of normal for males.

The 003 trial data also provide evidence that emricasan reduces cCK18 levels from baseline in patients with elevated cCK18 levels, as shown in Figure 5 below. Statistically significant reductions in cCK18 levels were reported as early as three hours after dosing and were still evident following ten weeks of treatment, within each of the 5 mg, 25 mg and 50 mg dose arms compared to baseline values in the relevant dose group. Importantly, in the 003 trial, after ten weeks of dosing, cCK18 levels in all emricasan treatment groups were similar to the baseline level of cCK18 in healthy volunteers as established in our Phase 1 trial (see the description of study IDN-6556-03 below) and as generally reported from independent trials. We believe this observation suggests that normal levels of caspase activity remain intact. We also believe that by returning apoptosis to normalized levels, emricasan may enable the balance between apoptosis and the body’s normal clearance mechanism for apoptosis to be restored.

Figure 5. Change in cCK18 from Baseline Following BID Dosing in Subjects with HCV

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The 003 trial also included measurements of caspase 3 and 7 enzymatic activity. As shown in Figure 6 below, emricasan significantly reduced caspase 3 and 7 activity in a pattern similar to its effect on cCK18. We believe these data demonstrate that emricasan rapidly reduces elevated levels of caspase enzymatic activity and, as a consequence, excessive apoptosis in these patients. Since caspase 3 and 7 are known to be involved in the cleavage of CK18 which produces cCK18, we also believe these data suggest that the effect of emricasan on cCK18 is a result of inhibiting caspase activity. In addition, consistent with the cCK18 data, emricasan did not eliminate all caspase 3 and 7 activity in these patients. We believe this suggests that emricasan does not interfere with normal base levels of caspase activity or apoptosis, which is important in establishing the overall safety profile of emricasan.

Figure 6. Change in Caspase 3 and 7 Enzymatic Activity from Baseline Following

BID Dosing in Subjects with HCV

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In the 003 trial, emricasan was generally observed to be well-tolerated. The most commonly reported adverse events in emricasan-treated subjects were headache, fatigue, nausea and diarrhea, most of which were mild to moderate in severity. Thirteen subjects withdrew from the study including seven in the placebo group, three from

the 5 mg, two from the 50 mg and one from the 25 mg emricasan groups. Nineteen adverse events reported by 14 subjects were considered severe with the greatest incidence in the placebo and 5 mg emricasan-treated groups (seven events each) and the lowest incidence in the 25 mg treatment group (one event). Severe adverse events were varied and showed no pattern across the treatment groups. The majority of adverse events had been resolved by the end of the study and the numbers of continuing events were similar for each of the patient cohorts. In addition, no concerning changes in any of the laboratory parameters and no clinically relevant changes in vital signs, electrocardiograms, physical examinations, or liver ultrasound scans could be attributed to emricasan.

Phase 2 Ascending Dose Study in Patients with Hepatic Impairment (Study A8491004)

Study A8491004, or the 004 trial, was a Phase 2, randomized, multicenter, placebo-controlled, double-blind, ascending dose trial in 105 patients with mild to moderate hepatic impairment. The trial was designed to evaluate the safety, tolerability, and pharmacokinetics of several dosing regimens of orally administered emricasan in these patients. The secondary objective of the trial was to evaluate the effects of emricasan on ALT and AST, as markers of efficacy. The trial was conducted at seven study sites and emricasan was administered orally for up to three times daily for 14 days. The study predominantly included patients with HCV liver disease, and also included limited numbers of patients with liver disease attributed to other causes, including HBV, NASH and primary biliary cirrhosis/primary sclerosing cholangitis. While once-daily, or QD, and BID dosing in the HCV patients demonstrated significant reductions in ALT from baseline, the BID dosing cohorts demonstrated greater percentage decreases of ALT levels than QD dosing.

In the 004 trial, 25 HCV patients were administered emricasan once per day for 14 days. As set forth in Figure 7 below, ALT reductions were rapid and sustained during the 14-day dosing period with a 30% to 40% reduction from baseline. While ALT decreases were statistically significantly different than placebo for QD dosing at 25 mg, 100 mg and 200 mg (p-values ranging from 0.0041 to <0.0001), those seen at a QD dose of 5 mg were less dramatic. After treatment with emricasan was completed, ALT levels returned to pre-treatment levels.

Figure 7. Percentage Change in ALT from Baseline Following QD Dosing in Subjects with HCV

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The 004 trial also examined BID, and three times daily, or TID, dosing of emricasan. In the trial, 30 patients received BID dosing at different dose levels and six patients were treated TID. As set forth in Figure 8 below, ALT reductions were rapid and sustained during the 14-day dosing period. In general, decreases in ALT were more pronounced than with QD dosing, with ALT reductions from baseline ranging from 39% to 56%. One cohort of patients was treated with 5 mg TID dosing. The results from this dosing group were similar to the BID

dosing groups. Patients with liver disease from causes other than HCV were dosed at 100 mg BID. Most of these patients had reductions in ALT similar to those observed in the HCV patients. All dosing groups were statistically significantly different than placebo (p-values ranging from 0.0041 to <0.0001).

Figure 8. Percentage Change in ALT from Baseline Following BID and TID Dosing in Subjects with HCV

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In all of the patient populations in this study, emricasan was generally well-tolerated. The most commonly reported adverse events related to emricasan were upper abdominal pain, dyspepsia, fatigue, dizziness, and headache. No subject was discontinued due to an adverse event. Importantly, in both the HCV and HBV infected patients studied, no increases in viral load parameters were observed.

Phase 2 Ascending Dose Crossover Study in Patients with HCV and Liver Fibrosis (Study A8491010)

Study A8491010 was a Phase 2, randomized double-blind, placebo-controlled crossover dose response study of emricasan in 24 patients with chronic HCV infection and liver fibrosis conducted by Pfizer. This study assessed the effects of BID dosing of emricasan on ALT and AST levels in these patients. For each patient, the study consisted of a screening visit, a two-week baseline period, three 14-day study periods separated by a minimum washout period of two weeks, and a two-week follow-up period after the last treatment period. Each patient was to receive three of five possible treatments (emricasan 0.5, 1, 2.5, 5 mg or placebo) BID for 13 days and QD on the final day of each study period. This trial was voluntarily discontinued early due to an unanticipated finding of inflammatory infiltrates in mice in a preclinical study that was ongoing concurrently with the clinical study and was unrelated to this Phase 2 trial. Pfizer notified the FDA of the findings in mice and the discontinuation of the trial, which resulted in the agency placing a clinical hold on the study of emricasan in 2007. At the time the clinical hold was imposed, 18 of 24 subjects had completed study A8491010. Because the study was discontinued prematurely, formal statistical tests were not performed. However, reductions in ALT in the 5 mg BID dose group were similar to the results of the 5 mg BID dose groups in the 003 and 004 trials. As described in the Emricasan History section below, the clinical hold was lifted in January 2013.

Clinical Studies in Organ Preservation in Transplant Patients

Preclinical studies demonstrated that emricasan is effective in protecting organs from damage that can occur during transplantation due to ischemia or reduced oxygen during isolation of donor organs, and reperfusion injury resulting from rapid exposure to oxygen following transplantation.

Study A8491002 was a Phase 2 randomized, placebo-controlled, double-blind, parallel group study to evaluate the effects of emricasan when administered in liver transplantation storage and flush solutions used in the preparation of the donated liver, and when administered to the recipient via IV during the first 24 hours after liver transplantation. Ninety-nine patients were randomized into one of four groups. In the first group, the liver was treated with placebo in the storage and flush solution and the patient was given placebo following

transplantation. In the second group the liver was treated with 15 µg/mL emricasan in the storage and flush solution, but the patient received placebo following transplantation. The third group was treated with a lower concentration of emricasan, 5 µg/mL, in the storage and flush solution and the patient received 0.5 mg/kg emricasan for 24 hours by IV administration following transplantation. The fourth group was treated with 15 µg/mL emricasan in the storage and flush solution and the patient received 0.5 mg/kg emricasan for 24 hours by IV administration following transplantation.

The co-primary endpoints were peak absolute change from baseline in ALT and AST measured up to three days post-transplantation. Large increases in both ALT and AST occurred in all groups reflecting liver injury typically occurring after liver transplantation. The outcome on the co-primary endpoints was not different between the placebo and the treatment groups possibly due to the short duration of drug treatment (24 hours) following transplantation. Serum markers of liver cell apoptosis, cCK18, were reduced in all groups receiving drug as compared to placebo. In addition, the level of liver cell apoptosis in liver tissue as determined by quantitation of cells with caspase 3 and 7 activity was reduced in all groups receiving emricasan, suggesting that the drug has activity through the anticipated mechanism of action.

Generally, the adverse events reported in the study were reflective of the severity of disease in the patient population. There were 1,240 adverse events reported in the 99 subjects, with similar numbers reported across the four study groups, as discussed above. There were 79 serious adverse events (6.4%) reported by 32 patients in this study. Of all the adverse events, 15 events were reported as possibly treatment-related but none were reported as probably or definitely treatment-related. The type and frequency of adverse events was similar across all groups, including placebo. There were deaths reported in all treatment groups (two in the placebo treatment group, and one in each of the emricasan treatment groups). These data in total support the conclusion that treatment with emricasan in this study has been generally well-tolerated.

Health Canada study NCT01653899, an investigator sponsored clinical trial, has been initiated at the University of Alberta to evaluate the safety and efficacy of islet cell culture and short-term (14 days) oral administration of emricasan in subjects with established Type 1 diabetes mellitus with unstable glycemic control. Health Canada approved the application in April 2012 and the trial is underway. This trial is an open label pilot study funded by a grant from the Juvenile Diabetes Research Foundation. Patients enrolled in this trial are not able to adequately regulate their blood glucose levels with insulin. The patients undergo pancreatic islet cell transplantation, a procedure referred to as the Edmonton procedure, with the goal of eliminating their need for insulin. One objective of this trial is to determine whether emricasan can improve upon the success rate of this so-called Edmonton procedure by reducing the amount of islet cell death after transplantation. Patients are dosed orally for 14 days following islet transplantation and are then monitored for their ability to control blood glucose without the need for insulin.

Phase 1 Studies

We have conducted six Phase 1 trials in subjects with both single and multiple-dose administration of emricasan. The objective of these trials was to examine the safety, tolerability and pharmacokinetics of emricasan. As shown in Figure 9 below, emricasan was generally well-tolerated in all six Phase 1 trials.

Figure 9. Emricasan Phase 1 Clinical Trial Summary

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To understand the activity of emricasan on caspase activity in healthy subjects, a Phase 1 trial (study IDN-6556-03) in 15 subjects was conducted. In the trial, the levels of cCK18 in healthy human subjects was measured pre-dosing and then after dosing at different time intervals up to 12 hours post dosing. In this study, patients were administered 25 mg of emricasan BID as part of a drug-drug interaction study for 24 days with blood levels of cCK18 measured serially on days one, 17 and 24. As shown in Figure 10 below, dosing with emricasan did not cause meaningful decreases in cCK18 from predose levels in healthy subjects. We believe this demonstrates that emricasan does not interfere with the normal level of caspase activity and apoptosis in humans.

Figure 10. Mean Serum Levels of cCK18 in Healthy Subjects Following 25 mg BID of Emricasan in 15 Subjects

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Emricasan History

Emricasan was initially discovered and developed by researchers at Idun, where the company was developing a new class of drugs that modulate caspases involved in the apoptosis and inflammation pathways. Idun, co-founded by Nobel Prize winner H. Robert Horvitz, Ph.D. for his work in the apoptosis field, was uniquely

positioned as a leading expert in translating apoptosis research into drug development candidates. Emricasan was Idun’s lead program when Pfizer acquired the company for approximately $298 million in 2005.

When we acquired emricasan from Pfizer in 2010, emricasan was on clinical hold in the United States due to an observation of inflammatory infiltrates in mice that Pfizer saw in a preclinical study and reported to the FDA in 2007. Pfizer performed additional preclinical studies attempting to characterize the nature of the inflammatory infiltrates, but did not carry out a formal carcinogenicity study to evaluate whether or not the infiltrates progressed to cancer. These infiltrates observed in mice were not observed in any other species. In 2008, Pfizer stopped work on the program. After acquiring emricasan, we conducted a thorough internal review of these studies and commissioned several independent experts to review all of the available data. The analysis provided by these experts unanimously concluded that these inflammatory infiltrates did not represent pre-cancerous lesions, nor were these infiltrates likely to progress to cancer. Additionally, a comprehensive analysis of available apoptosis literature supported the conclusion that the infiltrates were not likely to be precursors to cancer.

In April 2011, we met with the FDA to discuss plans for reinitiating clinical development of emricasan. We proposed conducting a carcinogenicity study designed to reproduce the previously observed findings of inflammatory infiltrates and determine whether they progress to cancer. We proposed using the Tg.rasH2 transgenic mouse model, which is known to be predisposed toward tumor development. The FDA agreed with the study design, and agreed that if the study reproduced the previously observed inflammatory infiltrates, but did not produce cancer, the issue which generated the clinical hold would be resolved.

This study was completed successfully in 2012. The inflammatory infiltrates were reproduced, and there was no evidence of tumor formation. In summary, treatment with emricasan for 26-weeks did not result in an increase in the incidence of tumors in Tg.rasH2 mice. The results were submitted to the FDA in preparation for a meeting in October 2012. The FDA reviewed the data and agreed with the study conclusion. We subsequently filed a new investigational new drug application, or IND, for emricasan for HCV-POLT, which was formally cleared in January 2013, effectively removing the clinical hold. In addition, the FDA has accepted this Tg.rasH2 carcinogenicity study as one of two carcinogenicity studies required for registration. We plan to perform a two-year rat carcinogenicity study, concurrent with the Phase 2b/3 HCV-POLT study, as the second carcinogenicity study.

Emricasan in ACLF

Medical Need and Market Opportunity

ACLF occurs in patients who have compensated or decompensated cirrhosis but are usually relatively stable. In these patients, some acute event sets off a rapid deterioration of liver function. The cause of this acute episode of decompensation may include toxins, such as alcohol, metabolic abnormalities and infections. The morbidity and mortality of patients with ACLF is high, and approximately 45% of the patient population that we intend to treat will die or develop multi-organ failure as a result of the decompensation episode within 28 days of hospitalization. We estimate that there are 150,000 patients in the United States and the EU diagnosed with symptoms consistent with our target population in ACLF. According to a 2011 publication in the Journal of Hepatology, the in-hospital mortality rateengage an existing partner for these acute deteriorating patients is greater than 50% and the total annual charges associated with ICU admissions alone are $3 billion, equating to a mean charge of $116,000 per admission.

Liver function in ACLF patients deteriorates rapidly. At the time of hospitalization, patients may present with MELD scores such as those seen on the transplant waiting list. Although the exact mechanisms remain unclear, massive liver cell loss involving excessive apoptosis and necrosis are known contributing factors leading to progressive dysfunction. There is evidence that serum markers of caspase-driven apoptosis such as cCK18 are elevated in these patients. In addition, independent studies have shown that increased cCK18 levels in this patient population are associated with worse prognosis.

The rapid deterioration in liver function, which may be exacerbated by an altered immune response, leads to life-threatening complications such as renal failure, increased susceptibility to infection, hepatic coma and systemic hemodynamic dysfunction. Current goals of the medical treatment for ACLF are to reverse precipitating factors, support failing organs and prevent further deterioration in liver function in order to give the liver time to

repair. Medical intervention for ACLF involves treatment of the underlying cause of the acute event. Patients who progress to multi-organ failure may require specific therapies for this such as medications for cardiac failure, mechanical ventilation for respiratory failure or dialysis for renal failure. Liver transplantation is required in some subjects to improve survival and quality of life. There are currently no approved therapies with a specific indication for the treatment of ACLF, and to our knowledge, there are only a limited number of clinical studies currently being conducted in patients with either liver cirrhosis or liver failure. We believe the ACLF population is in high medical need of an efficacious and well-tolerated therapy to prevent progression to multi-organ failure and, ultimately, premature death.

Development Plans

The ACLF studies will assess the safety and efficacy of emricasan in reducing cell death and inflammation in order to improve time to clinical worsening, or TTCW, which is defined as the first occurrence of liver transplant, progression to next organ failure or death in patients with acute liver failure in the presence of cirrhosis. Two studies are being planned in this patient population as follows.

Phase 2b Dose Ranging Study

In this Phase 2b study, we plan to enroll 60 patients with a history of liver cirrhosis that have been admitted to the hospital for an acute deterioration of liver function for more than 24 hours. Patients will be required to have a MELD score between 20 and 30 as well as certain other inclusion criteria related to creatinine levels, bilirubin levels and INR. Patients with uncontrolled infections will be excluded from the study. Patients will be equally randomized to receive either placebo, 5 mg, 25 mg or 50 mg emricasan BID orally. The primary objective in this 28-day dosing study will be to explore the pharmacokinetics and pharmacodynamics together with the safety of emricasan in this patient population. We also plan to measure TTCW, which is anticipated to be the primary efficacy endpoint for the planned Phase 3 studies in ACLF and the Phase 2b study in CLF. Changes in ALT, AST, cCK18 and the components of the MELD score will also be measured in the study.

We plan to initiate this Phase 2b clinical trial in the United Kingdom in the second half of 2013 and anticipate results from the trial will be available during the first half of 2014. The data from this trial will be used in supportcontract manufacturing of our planned end of Phase 2b meetings with both U.S. and EU regulatory authorities to finalize the protocol for our planned Phase 3 trial in ACLF.

Phase 3 Registration Study

The Phase 3 registration study for ACLF is expected to be an international study that will include approximately 400 patients with the same inclusion and exclusion criteria as the Phase 2b study. We expect that the primary endpoint will be TTCW assessed after 28 days of dosing. Changes in ALT, AST and cCK18 and components of MELD score will also be measured in this study. In order to be able to provide important prescribing information to physicians, at the end of the 28-day dosing period, patients randomized to receive emricasan during the initial 28 days of the study will be re-randomized to receive either emricasan or placebo for an additional five months. Therefore, we expect emricasan to be dosed up to six months in this study. Patients randomized to placebo will remain on placebo throughout the study.

Based on our discussions with regulatory authorities in the United Kingdom and Germany, we believe that the ACLF Phase 3 clinical trial could suffice as a single registration study for these geographies if the results are compelling. We will discuss a similar strategy for emricasan approval in the United States with the FDA at our end of Phase 2 meeting to be held after the completion of our Phase 2b trial. We plan to submit applications for orphan drug designations for ACLF in the United States and the EU in the second half of 2013.

Subject to the results of our planned clinical trials and any regulatory-approved product labeling, we currently anticipate that emricasan, if approved for this indication, would be prescribed by physicians to be dosed for 28 days, but potentially as long as six months, in the ACLF patient population.

Emricasan in CLF

Medical Need and Market Opportunity

CLF involves the progressive destruction of liver cells over time resulting in fibrosis and cirrhosis. The cause of the chronic decompensation or liver failure may vary and, similar to ACLF, includes infections, such as subacute bacterial peritonitis, HCV or HBV, metabolic causes, such as NASH, autoimmune diseases and alcohol. Eventually, these patients will progress to the point where, if eligible, they may require transplantation. The difference between this population and ACLF is that in ACLF, patients have an acute event that triggers a decompensatory event that may be reversed whereas in CLF, the event is of a chronic nature and it is unlikely that the liver function will improve. Objectives for the management of patients with CLF will be either to ensure that they stabilize to the point that they are eligible for transplant or that they survive until the time of transplant. The same therapies as those employed for the management of ACLF and mentioned above are generally employed. In CLF, apoptosis is elevated as determined by serological biomarkers and histology, which correlates with clinical worsening. Independent published studies have shown that cCK18 levels are elevated in CLF patients and correlate with extent of liver inflammation and cholestasis.

Although we are not planning to exclusively study patients with CLF on the liver transplant waitlist, many of these patients may also be included in the study. According to the U.S. Department of Health and Human Services, there were over 5,800 adult liver transplants performed in the United States in 2011 and approximately 2,500 died while waiting for transplant and another 500 subsequently became ineligible for a liver transplant. We estimate that there are approximately 5,000 CLF patients in our target population on the transplant waitlist in the United States and the EU. The median wait time for a liver transplant for the subset of patients with MELD scores of 19-24 is 106 days and the mortality rate is approximately 25% during that time frame, according to the United Network for Organ Sharing database. We estimate that there will be at least the same number of patients with CLF who are not candidates for liver transplantation but who might also benefit from emricasan. Given its mechanism of action, emricasan has the potential to improve patients’ ability to survive longer while waiting for a liver transplant or potentially make them eligible for transplant.

Development Plans

A Phase 2b study in patients with CLF is being planned. This study will be designed to include approximately 100 patients with MELD scores at entry of 20-30. It is expected that emricasan will be dosed for one to three months and the endpoints in this study will include TTCW as well as ALT, AST and cCK18 levels. The data from the ACLF dose ranging study is also expected to serve as the basis for dose selection in this trial. Depending on our interactions with regulatory authorities, this study might also be designed as a second registration study in support of the ACLF indication. We anticipate commencing this trial in the second half of 2014 after completion of the ACLF Phase 2b study.

Subject to the results of our planned clinical trials and any regulatory-approved product labeling, we currently anticipate that emricasan, if approved for this indication, would be prescribed by physicians to be dosed for one to three months in the CLF patient population.

Emricasan in HCV-POLT

Medical Need and Market Opportunity

According to the Organ Procurement and Transplantation Network and EASL, of the approximately 12,000 patients in the United States and EU who receive liver transplants each year, it is estimated that 30% are HCV-infected. Since immune system suppression is required following liver transplantation, 100% of these patients experience HCV recurrence that can lead to fibrosis and cirrhosis. It is estimated that 50% of these patients develop cirrhosis within two years of transplantation. We refer to this population as the HCV-POLT population, which we estimate to be 50,000 patients in the United States and EU.

In HCV-POLT patients, due to the lack of easily-administered and effective options to address the underlying HCV, patients are monitored closely for the presence of fibrosis and its rate of progression using ALT measurements and biopsies to determine need for treatment. Physicians currently treat these patients when they

have an acute flare of HCV together with some sign of fibrosis evident on liver histology. Current treatment options are largely limited to interferon-based regimens that are not well-tolerated or particularly efficacious in this population. Given the lack of effective treatment options, physicians have begun to implement newer treatments such as boceprevir and telaprevir in these patients despite limited data for those treatments in this post-transplant population.

The HCV landscape is expected to evolve dramatically over the next five to ten years with the introduction of interferon-free regimens, which are expected to reach the market as soon as 2015, and next-generation interferon-free regimens, which may reach the market by as early as 2016, with greater efficacy and tolerability over the current antiviral therapies. While these novel treatments are expected to drive high cure rates in treatment-naïve patients, even with 100% treatment rates and 90% cure rates, we believe the number of annual transplants needed will significantly exceed the available supply of transplants. Based on market research we commissioned, we estimate that treatment rates would need to be 100% and cure rates would have to exceed 97% before the supply of liver transplants would outstrip the need for transplant on an annual basis, without considering the current backlog. The immuno-compromised status of post-transplant patients and characteristics of viral infection in patients that have previously failed HCV treatments are likely to limit cure rates in the HCV-POLT population, even with the new therapies. We believe emricasan could play an important role in extending life for patients that still require a transplant as a result of not achieving a cure by next-generation agents.

Development Plans

We are planning a randomized, double-blind, placebo-controlled trial in the HCV-POLT population that we expect may serve as a single Phase 3 registration study to support a marketing authorization application, or MAA, filing in the EU. While the study is designated a Phase 3 study in the EU, the study is designated a Phase 2b study in the United States. We plan to seek further discussions with the FDA to determine if the study may be used to support the filing of an NDA with the FDA upon completion. This 260-patient study will enroll patients who have undergone a liver transplant and show demonstrable fibrosis on liver histology. Patients eligible for this study will include those who have had unsuccessful antiviral treatment prior to or following liver transplant; those who in the opinion of the treating physician are not suitable candidates for antiviral treatment; and/or those who are unable to tolerate antiviral treatment for HCV. Patients will be randomized to receive either placebo or 25 mg of emricasan BID. The study will be a two-year dosing study with a three-year follow up. The primary endpoint will be liver histology, specifically the presence or absence of disease progression as measured by the standard Ishak Fibrosis Score, which stages the severity of fibrosis and/or cirrhosis on a 0-6 scale. Changes in ALT, AST and cCK18 will also be measured in this study. We expect to initiate this trial in the second half of 2013.

We have filed for orphan drug designation for the HCV-POLT indication in the EU and the United States, but have not yet received responses from the regulatory bodies in these jurisdictions. A European Scientific Advice meeting with the Committee for Medicinal Products for Human Use (CHMP) for HCV-POLT is being planned for mid-2013. This Scientific Advice meeting will define the specific requirements and deliverables that will be required in order to qualify for single registration study status throughout Europe. It will also define the patient safety databases that will be required as well as the additional supportive clinical studies such as drug-drug interaction studies (if any) that will be required for the MAA in Europe.

Subject to the results of our planned clinical trials and any regulatory-approved product labeling, we currently anticipate that emricasan, if approved for this indication, would be prescribed by physicians to be dosed for up to two years in the HCV-POLT patient population.

Future Indications

Due to its mechanism of action and the presence of apoptosis and inflammation in many liver diseases, we believe there may be several patient populations that could potentially benefit from emricasan, including those that have previously failed HCV treatment and those with NASH, alcoholic liver disease, non-alcoholic fatty liver disease, viral hepatitis and other chronic liver diseases. At this time, we do not plan to explore these indications; however we may seek partners to pursue the evaluation of these potential indications. We are

currently supporting a pilot study funded by the National Institute on Alcohol Abuse and Alcoholism (NIAAA) in patients with alcoholic hepatitis. This exploratory study is a placebo-controlled study which will be conducted at three centers in the United States over four years and will assess patient survival as the primary endpoint.

Commercialization Strategy

We expect that the majority of ACLF, CLF and HCV-POLT patients will be treated at tertiary care centers and transplant centers and therefore can be addressed with a targeted sales force. We intend to build our own commercial infrastructure in North America and the EU to target these centers. We believe we are well-positioned to retain commercialization rights for emricasan for ACLF, CLF and HCV-POLT in the United States and the EU while considering opportunities to partner in other territories or for other indications.

Manufacturing

Pfizer completed a significant portion of the manufacturing process optimization needed to provide an efficient synthesis of active pharmaceutical ingredient, or API, and scale-up for registration trials. API was successfully produced under current Good Manufacturing Practices, or cGMP, conditions, and a strategy to scale up the API for commercialization is in development. We have adequate cGMP API to support Phase 2 and Phase 3 clinical trials. We have secured a contractor that is capable of making sufficient quantities of the drug product. Both API and the drug product have demonstrated sufficient stability characteristics in our studies conducted to date. A number of dosage forms are being developed including capsule, powder-in-capsule, tablet, and alternate dosage forms suitable for pediatric administration.

Competition

The biopharmaceutical industry is characterized by intense competition and rapid innovation. Although we believe that we hold a leading position in our understanding of caspase inhibition related to liver disease, our competitors may be able to develop other compounds or drugs that are able to achieve similar or better results. Our potential competitors include major multinational pharmaceutical companies, established biotechnology companies, specialty pharmaceutical companies and universities and other research institutions. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large, established companies. We believe the key competitive factors that will affect the development and commercial success of our product candidates are efficacy, safety and tolerability profile, reliability, convenience of dosing, price and reimbursement.going forward.

There are currently no therapeutic products approved for the treatment of ACLF, CLF or HCV-POLT. There are a number of marketed therapeutics used in each of these diseases to try to remove the underlying cause of the disease and prevent further liver injury. For example, if the liver damage is a result of HBV or HCV, marketed antiviral medications may be used to treat the virus that led to liver damage. If the liver damage is a result of alcoholic hepatitis, marketed alcohol addiction drugs may be used. If the liver damage is a result of obesity, diet and exercise may be prescribed along with marketed therapeutics. If the liver damage is a result of NASH, marketed drugs such as insulin sensitizers (e.g., metformin), antihyperlipidemic agents (e.g., gemfibrozil), pentoxifylline and ursodiol are generally used, although none of these are approved for NASH. In addition to the marketed drugs for those indications, there are drugs in development for each of these indications. Although these marketed therapies and those in development may be efficacious, all of them take time to show an effect and as long as the underlying conditions persist there will continue to be damage to the liver. Emricasan is the only therapeutic we are aware of that is being developed specifically to reduce the level of apoptosis in the liver and as a result it may be used with these other therapies.

In addition, the HCV landscape is expected to evolve dramatically over the next five to ten years with the introduction of new interferon-free regimens, which are expected to reach the market as soon as 2015, and next generation interferon-free regimens, which may reach the market by as early as 2016, with greater efficacy and tolerability over the current antiviral therapies. Based on market research we commissioned, we estimate that treatment rates pre-transplantation would need to be 100% and cure rates would have to exceed 97% before the supply of liver transplants would outstrip the need for transplant on an annual basis. Therefore, we expect that there will continue to be a significant unmet need in the HCV-POLT population.

Material Contracts

Pfizer Inc.

In July 2010, we entered into a Stock Purchase Agreement with Pfizer pursuant to which we acquired all of the outstanding capital stock of Idun, a wholly-owned subsidiary of Pfizer at the time, in consideration for an upfront payment of $250,000 and a promissory note in the principal amount of $1.0 million. The promissory note matures in July 2020, subject to acceleration upon specified events of default, including a change of control transaction, our failure to timely pay any principal or interest when due, our failure to timely provide certain financial information to Pfizer, the creation of any lien on our property other than permitted liens, any disposition of our business or property other than permitted transfers, our payment of dividends or other distributions on our equity securities, our incurrence of any indebtedness other than permitted indebtedness, our involvement in liquidation, dissolution, bankruptcy or similar proceedings, our failure to notify Pfizer of certain material adverse events, our failure to repay any indebtedness that causes an aggregate of $2.0 million or more in such indebtedness to accelerate in maturity, and the rendering of certain judgments against us. The note bears interest at 7% per year, compounded quarterly. Interest is payable on a quarterly basis during the term of the note. We have the right to prepay the promissory note at any time. We will also be required to make additional payments to Pfizer totaling $18.0 million upon the achievement of specified regulatory milestones relating to emricasan.

Idun Pharmaceuticals, Inc.

In January 2013, we conducted a spin-off of our subsidiary Idun Pharmaceuticals, Inc., or Idun Pharma (which we had acquired from Pfizer in the transaction described above), to our stockholders at that time. Immediately prior to the spin-off, all rights relating to emricasan were distributed to us pursuant to a distribution agreement. The assets remaining in Idun Pharma at the time of the spin-off consisted solely of intellectual property rights and license and collaboration agreements unrelated to emricasan. The spin-off was conducted as a dividend of all of the outstanding capital stock of Idun Pharma to our stockholders and, as a result, we no longer own any capital stock of Idun Pharma. The aggregate value of Idun Pharma at the time of the spin-off was deemed to be $9.6 million based on the valuation of an independent appraisal firm.

Also in connection with the spin-off, we contributed $500,000 to Idun Pharma to provide for its initial working capital requirements and entered into a transition services agreement to provide operating services to Idun Pharma, generally consisting of accounting support, technology license administration and intellectual property maintenance. Idun Pharma must pay us for all direct costs as well as overhead and general and administrative expenses incurred in performing these services. As of March 31, 2013, Idun Pharma had not made any payments to us for any services provided under the transition services agreement. The initial term of the transition services agreement ends on December 31, 2013, and will renew automatically for successive one year periods unless terminated by either Idun Pharma or us upon 90 days’ prior notice to the other party.

Idun Pharma Sublicense Agreement

In March 2013, we entered into a sublicense agreement with Idun Pharma in which we were granted the right to use the patent rights and know-how related to the screening and identification of emricasan. These rights were previously granted to Idun Pharma under license agreements with Thomas Jefferson University, or TJU. Under the sublicense, we are required to pay directly to TJU a royalty of less than one percent on net sales of emricasan. We also have the right to grant further sublicenses to third parties and are required to pay TJU a portion of any such sublicense revenue we receive. The sublicense agreement will expire upon the date which there are no longer any valid claims in any patents or patent applications sublicensed to us, unless earlier terminated. Idun Pharma may terminate the agreement if we substantially fail to perform or otherwise materially breach any of the material terms, covenants or provisions of the sublicense agreement, and we do not cure any such breach within 60 days of receipt of written notice from Idun Pharma specifying the breach. The agreement may also be terminated if the underlying license agreements between Idun Pharma and TJU are terminated. The underlying license agreements may be terminated by either Idun Pharma or TJU if the other party substantially fails to perform or otherwise materially breaches any of the material terms, covenants or provisions of the underlying license agreements, and the breaching party does not cure any such breach within 90 days of receipt

of written notice from the non-breaching party specifying the breach. Idun Pharma may also elect upon 30 days’ prior written notice to terminate its rights and obligations under one of the underlying license agreements with respect to any patent applications or patents licensed to it, or to terminate such underlying license agreement in its entirety. In the event that either of the underlying license agreements are terminated, Idun Pharma is obligated to assign and transfer to TJU all rights under sublicenses granted by Idun Pharma.

Intellectual Property

The proprietary natureAs of December 28, 2020, we hold or control eleven issued U.S. patents, five pending U.S. patent applications, and protection forforty patents in various jurisdictions outside the United States related to our product candidates and discovery programs and know-howcore technology. Additionally, we are importantpursuing twenty-three corresponding patent applications that are pending in various foreign jurisdictions, including two applications that are pending in accordance with the Patent Cooperation Treaty (“PCT”). Further advancement of our intellectual property portfolio will require the filing of patent applications related to our business.proprietary manufacturing process and product candidates. We have soughtpatents extending into the late 2020s, and 2030 as well as trade secrets protecting our intellectual property. Our patent prosecution strategy includes exploration of opportunities to expand our patent life in order to broaden our existing patent portfolio.

Below is a further description of certain of our key issued patents, including the method of protection, expiration date, number of related patents issued in foreign jurisdictions and the product candidates to which each patent relates. We currently hold or control:

three patents issued in the United States (U.S. Patent Nos. 10,538,736, 8,257,947 and internationally for emricascan, crystalline forms of emricasan8,524,494) and certain methods of treatment with emricasan. In addition, we have patent protection covering certain other preclinical stage compounds. Our policy is to pursue, maintain and defend patent rights whether developed internally or licensed from third parties and to protect the technology, inventions and improvements that are commercially important to the development of our business.

Our commercial success will dependthirty-one patents issued in part on obtaining and maintaining patent protection and trade secret protection of our current and future product candidates and the methods used to develop and manufacture them, as well as successfully defending these patents against third-party challenges. Our ability to stop third parties from making, using, selling, offering to sell or importing our products depends on the extent to which we have rights under valid and enforceable patents that cover these activities. We cannot be sure that patents will be granted with respect to any of our pending patent applications or with respect to any patent applications filed by us in the future, nor can we be sure that any of our existing patents or any patents that may be granted to us in the future will be commercially useful in protecting our product candidates, discovery programs and processes. For this and more comprehensive risks related to our intellectual property, please see “Risk Factors—Risks Related to Our Intellectual Property.”

Our patent portfolio for emricasan contains patentsforeign jurisdictions directed to the composition of matter, crystalline forms and methods of use. As of April 25, 2013 we have received three U.S. patents and corresponding foreign patents production

and use of extracellular matrix compositions and more specifically to proteins obtained by culturing cells under hypoxic conditions on a microcarrier beads or a three-dimensional surface in a suitable growth medium. The culturing method produces both soluble and non-soluble fractions, which may be used separately or in combination to obtain physiologically acceptable compositions useful in a variety of medical and therapeutic applications. These U.S. patents relate to HST-001, HST-002, HST-003, HST-004 and HST-005 and are expected to expire between January 2029 and 2030, while patents issued in foreign jurisdictions are expected to expire in July 2030;

one patent applications directed to the composition of matter. Foreign patents have been granted in Australia, Austria, Belgium, Canada, China, Denmark, Europe, Finland, France, Germany, Great Britain, Greece, Hong Kong, India, Ireland, Israel, Italy, Japan, Luxembourg, Mexico, Netherlands, Portugal, Singapore, South Africa, South Korea, Spain, Sweden and Switzerland. Patent applications are pending in Poland. We expect that the composition of matter patent, if the appropriate maintenance, renewal, annuity or other governmental fees are paid, will expire in 2018 (U.S.) and 2019 (international). It is possible that the term of a composition of matter patentissued in the United States could be extended up to five additional years under the provisions of the Hatch-Waxman Act.(U.S. Patent term extension may be available in certain foreign countries upon regulatory approval.

Our patent portfolio includes patentsNos. 8,535,913), which is also directed to crystalline formsthe production and use of extracellular matrix compositions and more specifically to proteins obtained by culturing cells under hypoxic conditions on a surface in a suitable growth medium useful for promoting hair growth. This U.S. patent relates to HST-001 and it is expected to expire in January 30, 2029;

two patents issued in the United States (U.S. Patent Nos. 8,530,415 and 9,512,403), which are also directed to the production of a tissue patch for the repair and regeneration of cells and methods of use using of emricasan. Asextracellular matrix compositions and more specifically to proteins obtained by culturing cells under hypoxic conditions on microcarrier beads or a three-dimensional a surface in a suitable growth medium. These U.S. patents relate to HST-003, HST-004 and HST-005 and are expected to expire January to March 2029; and

four patents issued in the United States (U.S. Patent Nos. 8,852,637, 9,034,312, 9,506,038, 10,143,708) and fourteen patents issued in foreign jurisdictions related to extracellular matrix compositions for the treatment of April 25, 2013cancer, which are scheduled to expire between January 2029 and November 2030, while patents issued in foreign jurisdictions are expected to expire in January 2029; and one pending U.S. application related to skin care.

In addition, as of December 28, 2020, we have receivedhold or control one U.S.United States patent and corresponding foreign patents and patent applications directed to crystalline forms of emricasan. Foreign patents have been granted in Australia, Canada, China, Denmark, France, Germany, Great Britain, Hong Kong, Israel, Italy, Japan, Mexico, Netherlands, Singapore, South Africa, South Korea, Spain, Sweden, Switzerland, and Taiwan. We received notification from the European Patent Office of intention to grant a patent on the patent application in Europe. Additional applications are pending in Argentina, China, Hong Kong, India, Japan, Norway and Thailand. We expect that the crystalline forms and methods of use patent, if the appropriate maintenance, renewal, annuity or other governmental fees are paid, will expire in 2028 (U.S.)(United States) and 2027 (international). It is possible that the term of a crystalline forms patent in the United States could be extended up to five additional years under the provisions of the Hatch-Waxman Act. Patent term extension may be available in certain foreign countries upon regulatory approval.

Our This patent portfolio also includes patents directed to certain methods of use of emricasan. As of April 25, 2013, we have received five U.S. patents and corresponding foreign patents and patent applications directed to composition of matter and methods of use for its internally developed caspase inhibitors, including CTS-2090.

Wherever possible, we seek to protect our inventions by filing U.S. patents as well as foreign counterpart applications in select other countries. Because patent applications in the U.S. are maintained in secrecy for at least eighteen months after the applications are filed, and since publication of emricasan. Foreigndiscoveries in the scientific or patent literature often lags behind actual discoveries, we cannot be certain that we were the first to make the inventions covered by each of our issued or pending patent applications, or that we were the first to file for protection of inventions set forth in such patent applications. Our planned or potential products may be covered by third-party patents have been grantedor other intellectual property rights, in Europe, France, Germany, Great Britain, Ireland, Italy, Japanwhich case continued development and Spain. We expectmarketing of its products would require a license. Required licenses may not be available to us on commercially acceptable terms, if at all. If we do not obtain these licenses, we could encounter delays in product introductions while we attempt to design around the patents, or we could find that the methodsdevelopment, manufacture or sale of use patents, ifproducts requiring such licenses are not possible.

In addition to patent protection, we also rely on know-how, trade secrets and the appropriate maintenance, renewal, annuity or other governmental fees are paid, will expire in 2017.

Government Regulation

Government authorities in the United States (at the federal, statecareful monitoring of proprietary information, all of which can be difficult to protect. We seek to protect some of our proprietary technology and local level)processes by entering into confidentiality agreements with our employees, consultants, and in other countries extensively regulate, among other things, the research, development, testing, manufacturing, quality control, approval, labeling, packaging, storage, record-keeping, promotion, advertising, distribution, post-approval monitoring and reporting, marketing and export and import of drug products such as those we are developing. Emricasan and any other drug candidates that we develop must be approved by the FDA before theycontractors. These agreements may be legally marketedbreached, we may not have adequate remedies for any breach and our trade secrets may otherwise become known or be independently discovered by competitors. To the extent that our employees or our consultants or contractors use intellectual property owned by others in their work for us, disputes may also arise as to the United Statesrights in related or resulting know-how and by inventions.

Competition

Both the appropriate foreign regulatory agency before they may be legally marketedbiopharmaceutical and cosmeceutical industries are highly competitive, and many of our competitors have substantially greater financial resources and experience in foreign countries.

United States Drug Development Process

In the United States, the FDA regulates drugs under the Federal Food, Drugresearch and Cosmetic Act, or FDCA, and implementing regulations. Drugs are also subject to other federal, state and local statutes and regulations. The process ofdevelopment, manufacturing, conducting clinical trials, obtaining regulatory approvals and the subsequent compliance with appropriate federal, state, localmarketing products.

While we believe our proprietary manufacturing process, focus on addressing underserved, multibillion-dollar global markets, in-house research and foreign statutesdevelopment, knowledge, experience, and regulations require the expenditure of substantial time and financial resources. Failure to comply with the applicable U.S. requirements at any time during the product development process, approval process or after approval, may subject an applicant to administrative or judicial sanctions. FDA sanctions could include, among other actions, refusal to approve pending applications, withdrawal of an approval, a clinical hold, warning letters, product recalls or withdrawals from the market, product seizures, total or partial suspension of production or distribution injunctions, fines, refusals of government contracts, restitution, disgorgement or civil or criminal penalties. Any agency or judicial enforcement action could have a material adverse effect on us. The process required by the FDA before a drug may be marketedscientific resources offer competitive advantages, we face competition in the United States generally involvesbiopharmaceutical and cosmeceutical industries. The key competitive factors affecting the success of HST-001, HST-003 and the emricasan asset are successful completion of clinical trials and timely regulatory approval in markets worldwide.

HST-001

Competition in the pharmaceutical market for the treatment of alopecia (hair loss), specifically androgenetic alopecia, consists of the following:

 

Completion of extensive preclinical laboratory tests, preclinical animal studiesAlthough hair restoration treatments range in effectiveness and formulation studies in accordance with applicable regulations, including the FDA’s Good Laboratory Practice, or GLP, regulations;

Submission to the FDA of an IND which must become effective before human clinical trials may begin;

Performance of adequate and well-controlled human clinical trials in accordance with applicable regulations, including the FDA’s current good clinical practice, or GCP, regulations to establish the safety and efficacyinvasiveness, one thing all of the proposed drug for its proposed indication;currently available treatments share is that they target the existing hair and hair follicles, and work to save them.

Submission to the FDA of an NDA for a new drug product;

A determination by the FDA within 60 days of its receipt of an NDA to accept the NDA for filingHair regrowth with topical options, such as Rogaine and review;

Satisfactory completion of an FDA inspectionPropecia, is minimal, and is lost upon discontinued use of the manufacturing facilityproduct.

Hair loss products currently on the market or facilities wherein active clinical development include: Allergan’s setipriprant, RepliCel’s RCH-01, Kerastem’s Style, Samumed’s SM-04554, Cassiopea’s Breezula, Johnson & Johnson’s Rogaine, Merck’s Propecia, PhotoMedex’s Tricomin and often as a last resort, a surgical hair transplant.

Up until now, no other approved treatment has demonstrated the drug is producedability to assess compliance withtrigger the FDA’s current good manufacturing practice,growth of new terminal hairs, or cGMP, regulations to assure that the facilities, methods and controls are adequate to preserve the drug’s identity, strength, quality and purity;

Potential FDA auditcreation of the preclinical and/or clinical trial sites that generated the data in support of the NDA; and

FDA review and approval of the NDA.new hair follicles.

Before testing any compounds with potential therapeutic value in humans, the drug candidate enters the preclinical testing stage. Preclinical tests include laboratory evaluations

The development of product chemistry, toxicity and formulation, as well as animal studies to assessHST-001 has the potential safety and activity ofto expand the drug candidate. The conduct of the preclinical tests must comply with federal regulations and requirements including GLPs. The sponsor must submit the results of the preclinical tests, together with manufacturing information, analytical data, any available clinical data or literaturehair restoration market by offering a successful option to those that currently have none, and a proposed clinical protocol,potentially more effective option to the FDAanyone presently using or considering current treatment options, such as part of the IND. An IND is a request for authorization from the FDARogaine or Propecia.

Certain treatment options may be limited in their effectiveness and only reduce hair loss, as opposed to administer an investigational drug product to humans. The central focus of an IND submission is on the general investigational plan and the protocol(s) for human studies. The IND automatically becomes effective 30 days after receipt by the FDA, unless the FDA raises concerns or questions regarding the proposed clinical trials and places the IND on clinical hold within that 30-day time period. In such a case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical trial can begin. The FDA may alsogrowing new hair.

impose clinical holds on a drug candidate at any time before or during clinical trials due to safety concerns or non-compliance. Accordingly, we cannot be sure that submission of an IND will resultHST-003

Competition in the FDA allowing clinical trials to begin, or that, once begun, issues will not arise that suspend or terminate such trial.

Clinical trials involve the administration of the drug candidate to healthy volunteers or patients under the supervision of qualified investigators, generally physicians not employed by or under the trial sponsor’s control, in accordance with GCPs, which include the requirement that all research subjects provide their informed consentpharmaceutical market for their participation in any clinical trial. Clinical trials are conducted under protocols detailing, among other things, the objectives of the clinical trial, dosing procedures, subject selection and exclusion criteria, and the parameters to be used to monitor subject safety and assess efficacy. Each protocol, and any subsequent amendments to the protocol, must be submitted to the FDA as part of the IND. Further, each clinical trial must be reviewed and approved by an independent institutional review board, or IRB, at or servicing each institution at which the clinical trial will be conducted. An IRB is charged with protecting the welfare and rights of trial participants and considers issues such as whether the risks to individuals participating in the clinical trials are minimized and are reasonable in relation to anticipated benefits. The IRB also approves the informed consent form that must be provided to each clinical trial subject or his or her legal representative and must monitor the clinical trial until completed. There are also requirements governing the reporting of ongoing clinical trials and completed clinical trial results to public registries.

Human clinical trials are typically conducted in three sequential phases that may overlap or be combined:

Phase 1. The drug is initially introduced into healthy human subjects and testedregenerating hyaline cartilage for safety, dosage tolerance, absorption, metabolism, distribution and excretion, the side effects associated with increasing doses, and if possible, to gain early evidence of effectiveness. In the case of some products for severe or life-threatening diseases, especially when the product may be too inherently toxic to ethically administer to healthy volunteers, the initial human testing is often conducted in patients.

Phase 2. The drug is evaluated in a limited patient population to identify possible adverse effects and safety risks, to preliminarily evaluate the efficacy of the product for specific targeted diseases or conditions and to determine dosage tolerance, optimal dosage and dosing schedule. Phase 2 trials can be further divided into Phase 2a and Phase 2b trials. Phase 2a trials are typically are smaller and shorter in duration, and generally consist of patient exposure-response trials which focus on proving the hypothesized mechanism of action. Phase 2b trials are typically higher enrolling and longer in duration, and generally consist of patient dose-ranging trials which focus on finding the optimum dose at which the drug shows clinical benefit with minimal side effects.

Phase 3. Clinical trials are undertaken to further evaluate dosage, clinical efficacy and safety in an expanded patient population at geographically dispersed clinical trial sites. These clinical trials are intended to establish the overall benefit/risk ratio of the product and provide an adequate basis for product approval. Generally, two adequate and well-controlled Phase 3 clinical trials are required by the FDA for approval of an NDA. Phase 3 clinical trials usually involve several hundred to several thousand participants.

Post-approval studies, or Phase 4 clinical trials, may be conducted after initial marketing approval. These studies are used to gain additional experience from the treatment of articular cartilage defects, consists of the following:

Physicians, and their patients, in the intended therapeutic indication. In certain instances, the FDA may mandate the performance of Phase 4 studies.are seeking treatments that reverse cartilage degeneration.

The FDCA permits the FDA

Less invasive procedures are preferred to preserve patient function and an IND sponsor to agree in writingreduce surgical complications.

Patients seek treatment options with shorter recovery periods and lasting treatment mechanisms that can promote more durable articular cartilage healing.

Current treatment options fall into four key therapeutics categories, opioid, analgesic, cell/stem cell or disease modifying.

Cartilage repair products currently on the designmarket or in active clinical development include: Collegium’s COL 003, Adhera’s IT-102, Cytori’s adipose derived stem cells, Stempeucetics’ Stempeucel, Samumed’s SM-04690 and size of clinical studies intended to form the primary basis of a claim of effectiveness in an NDA. This process is known as a Special Protocol Assessment, or SPA. An SPA agreement may not be changed by the sponsor or the FDA after the trial begins except with the written agreement of the sponsor and the FDA, or if the FDA determines that a substantial scientific issue essential to determining the safety or effectiveness of the drug was identified after the testing began. For certain types of protocols, including carcinogenicity protocols, stability protocols, and Phase 3 protocols for clinical trials that will form the primary basis of an efficacy claim, the FDA has agreed under its performance goals associated with the Prescription Drug User Fee Act, or PDUFA, to provide a written response on most protocols within 45 days of receipt. However, the FDA does not always meet its PDUFA goals, and additional FDA questions and resolution of issues leading up to an SPA agreement may result in the overall SPA process being much longer, if an agreement is reached at all. Medivir AB’s MIV-711.

Emricasan

Progress reports detailing the results of the clinical trials must be submitted at least annually to the FDA and written IND safety reports must be submitted to the FDA and the investigators for serious and unexpected adverse events or any finding from tests in laboratory animals that suggests a significant risk for human subjects. Phase 1, Phase 2 and Phase 3 clinical trials may fail to be completed successfully within any specified period, if at all. The FDA, the IRB, or the sponsor may suspend or terminate a clinical trial at any time on various grounds, including a finding that the research subjects or patients are being exposed to an unacceptable health risk. Similarly, an IRB can suspend or terminate approval of a clinical trial at its institution if the clinical trial is not being conducted in accordance with the IRB’s requirements or if the drug has been associated with unexpected serious harm to patients. Additionally, some clinical trials are overseen by an independent group of qualified experts organized by the clinical trial sponsor, known as a data safety monitoring board or data monitoring committee. This group provides authorization for whether or not a trial may move forward at designated checkpoints based on access to certain data from the study. We may also suspend or terminate a clinical trial based on evolving business objectives and/or competitive climate.

Concurrent with clinical trials, companies usually complete additional animal studies and must also develop additional information about the chemistry and physical characteristics of the drug as well as finalize a process for manufacturing the product in commercial quantities in accordance with cGMP requirements. The manufacturing process must be capable of consistently producing quality batches of the drug candidate and, among other things, must develop methods for testing the identity, strength, quality and purity of the final drug. Additionally, appropriate packaging must be selected and tested and stability studies must be conducted to demonstrate that the drug candidate does not undergo unacceptable deterioration over its shelf life.

FDA Review and Approval Processes

The results of product development, preclinical studies and clinical trials, along with descriptions of the manufacturing process, analytical tests conducted on the chemistry of the drug, proposed labeling and other relevant information are submitted to the FDA as part of an NDA requesting approval to market the product. The application includes both negative or ambiguous results of preclinical and clinical trials as well as positive findings. Data may come from company-sponsored clinical trials intended to test the safety and effectiveness of a use of a product, or from a number of alternative sources, including studies initiated by investigators. To support marketing approval, the data submitted must be sufficient in quality and quantity to establish the safety and effectiveness of the investigational drug product to the satisfaction of the FDA. The submission of an NDA is subject to the payment of substantial user fees; a waiver of such fees may be obtained under certain limited circumstances.

In addition, under the Pediatric Research Equity Act, or PREA, an NDA or supplement to an NDA must contain data to assess the safety and effectiveness of the drug for the claimed indications in all relevant pediatric subpopulations and to support dosing and administration for each pediatric subpopulation for which the product is safe and effective. The FDA may grant deferrals for submission of data or full or partial waivers. Unless otherwise required by regulation, PREA does not apply to any drug for an indication for which orphan designation has been granted. However, if only one indication for a product has orphan designation, a pediatric assessment may still be required for any applications to market that same product for the non-orphan indication(s).

The FDA reviews all NDAs submitted before it accepts them for filing and may request additional information rather than accepting an NDA for filing. The FDA must make a decision on accepting an NDA for filing within 60 days of receipt. Once the submission is accepted for filing, the FDA begins an in-depth review of the NDA. Under the goals and policies agreed to by the FDA under PDUFA, the FDA has ten months from the 60-day filing date in which to complete its initial review of a standard NDA and respond to the applicant, and six months for a priority NDA. The FDA does not always meet its PDUFA goal dates for standard and priority NDAs, and the review process is often significantly extended by FDA requests for additional information or clarification.

After the NDA submission is accepted for filing, the FDA reviews the NDA to determine, among other things, whether the proposed product is safe and effective for its intended use, and whether the product is being manufactured in accordance with cGMP to assure and preserve the product’s identity, strength, quality and

purity. The FDA may refer applications for novel drug or biological products or drug or biological products which present difficult questions of safety or efficacy to an advisory committee, typically a panel that includes clinicians and other experts, for review, evaluation and a recommendation as to whether the application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions.

Before approving an NDA, the FDA will inspect the facilities at which the product is manufactured. The FDA will not approve the product unless it determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the product within required specifications. Additionally, before approving an NDA, the FDA may inspect one or more clinical sites to assure compliance with GCP requirements. After the FDA evaluates the application, manufacturing process and manufacturing facilities, it may issue an approval letter or a Complete Response Letter. An approval letter authorizes commercial marketing of the drug with specific prescribing information for specific indications. A Complete Response Letter indicates that the review cycle of the application is complete and the application is not ready for approval. A Complete Response Letter usually describes all of the specific deficiencies in the NDA identified by the FDA. The Complete Response Letter may require additional clinical data and/or an additional pivotal Phase 3 clinical trial(s), and/or other significant and time-consuming requirements related to clinical trials, preclinical studies or manufacturing. If a Complete Response Letter is issued, the applicant may either resubmit the NDA, addressing all of the deficiencies identified in the letter, or withdraw the application. Even if such data and information is submitted, the FDA may ultimately decide that the NDA does not satisfy the criteria for approval. Data obtained from clinical trials are not always conclusive and the FDA may interpret data differently than we interpret the same data.

If a product receives regulatory approval, the approval may be significantly limited to specific diseases and dosages or the indications for use may otherwise be limited, which could restrict the commercial value of the product. Further, the FDA may require that certain contraindications, warnings or precautions be included in the product labeling or may condition the approval of the NDA on other changes to the proposed labeling, development of adequate controls and specifications, or a commitment to conduct one or more post-market studies or clinical trials. For example, the FDA may require Phase 4 testing which involves clinical trials designed to further assess a drug safety and effectiveness and may require testing and surveillance programs to monitor the safety of approved products that have been commercialized. The FDA may also determine that a risk evaluation and mitigation strategy, or REMS, is necessary to assure the safe use of the drug. If the FDA concludes a REMS is needed, the sponsor of the NDA must submit a proposed REMS; the FDA will not approve the NDA without an approved REMS, if required. A REMS could include medication guides, physician communication plans, or elements to assure safe use, such as restricted distribution methods, patient registries and other risk minimization tools. Following approval of an NDA with a REMS, the sponsor is responsible for marketing the drug in compliance with the REMS and must submit periodic REMS assessments to the FDA.

Orphan Drug Designation

In the United States, under the Orphan Drug Act, the FDA may grant orphan designation to a drug or biological product intended to treat a rare disease or condition. Such diseases and conditions are those that affect fewer than 200,000 individuals in the United States, or if they affect more than 200,000 individuals in the United States,Currently there is no reasonable expectation that the cost of developing and making a drug product availablecompetition in the United Statespharmaceutical market for these typesthe treatment of diseases or conditionsCOVID-19 using a pan caspase inhibitor:

COVID-19 is a multiple system disease that affects the lungs, circulatory system, the brain, kidney and other organs. Patients show a widespread of severity, some which remain asymptomatic, and others that progress all the way to rapid health deterioration, including death due to organ failure.

Patients that show greater morbidity and mortality are typically characterized by lymphopenia, a rapid decline in white blood cells. Preliminary studies indicate that lymphopenia is associated with more severe disease and outcomes. Emricasan targets Caspase-1 which is believes to be a key enzyme that when activated leads to lymphopenia.

Physicians, and their patients, are seeking treatment options that will be recovered from salesshorten recovery periods and prevent progression of the product. Orphan product designation must be requested before submitting an NDA. If the FDA grants orphan product designation, the identity of the therapeutic agent and its potential orphan use are disclosed publicly by that agency. Orphan product designation does not convey any advantage in or shorten the duration of the regulatory review and approval process, but it can lead to financial incentives, such as opportunities for grant funding toward clinical trial costs, tax advantages and user-fee waivers.

If a product that has orphan designation subsequently receives the first FDA approval for the disease or condition for which it has such designation,severe

Current non-vaccine treatment options fall into several therapeutic categories geared toward interfering with different aspects of the product is entitleddisease, including RNA polymerase to orphan drug marketing exclusivity for a periodprevent replication of seven years. Orphan drug marketing exclusivity generally prevents the FDA from approving another

application, including a full NDA,virus, general anti-inflammatory drugs, and monoclonal antibodies to marketinterfere with cellular receptors to prevent uptake of the virus.

Currently, there are no caspase inhibitors that are targeting the same drug or biological product for the same indication for seven years, except in limited circumstances, including if the FDA concludesmechanism of action, such as prevention of lymphopenia.

Other treatments that the later drug is safer, more effective or makes a major contributionaim to patient care. For purposes of small molecule drugs, the FDA defines “same drug” as a drug that contains the same active chemical entity and is intended for the same use as the drug in question. A designated orphan drug may not receive orphan drug marketing exclusivity if it is approved for a use that is broader than the indication for which it received orphan designation. Orphan drug marketing exclusivity rights in the United States may be lost if the FDA later determines that the request for designation was materially defective or if the manufacturer is unable to assure sufficient quantityinterfere with different aspects of the drug to meetdisease that are currently on the needs of patients with the rare disease or condition.

We have submitted applications for orphan drug designation for emricasan for HCV-POLT in the United States and the EU, but have not yet received responses from the regulatory bodies in those jurisdictions. We plan to submit applications for orphan drug designation for ACLF in the United States and EU in the second half of 2013.

Expedited Development and Review Programs

The FDA has a Fast Track program that is intended to expedite or facilitate the process for reviewing new drug products that meet certain criteria. Specifically, new drugs are eligible for Fast Track designation if they are intended to treat a serious or life-threatening disease or condition and demonstrate the potential to address unmet medical needs for the disease or condition. Fast Track designation applies to the combination of the product and the specific indication for which it is being studied. Unique to a Fast Track product, the FDA may consider for review sections of the NDA on a rolling basis before the complete application is submitted, if the sponsor provides a schedule for the submission of the sections of the NDA, the FDA agrees to accept sections of the NDA and determines that the schedule is acceptable, and the sponsor pays any required user fees upon submission of the first section of the NDA.

Any product submitted to the FDA for approval, including a product with a Fast Track designation, may also be eligible for other types of FDA programs intended to expedite development and review, such as priority review and accelerated approval. A product is eligible for priority review if it has the potential to provide safe and effective therapy where no satisfactory alternative therapy exists or a significant improvement in the treatment, diagnosis or prevention of a disease compared to marketed products. The FDA will attempt to direct additional resources to the evaluation of an application for a new drug designated for priority review in an effort to facilitate the review. Additionally, a product may be eligible for accelerated approval. Drug products studied for their safety and effectiveness in treating serious or life-threatening diseases or conditions may receive accelerated approval upon a determination that the product has an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical endpoint that can be measured earlier than irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible morbidity or mortality or other clinical benefit, taking into account the severity, rarity, or prevalence of the condition and the availability or lack of alternative treatments. As a condition of approval, the FDA may require that a sponsor of a drug or biological product receiving accelerated approval perform adequate and well-controlled post-marketing clinical studies. In addition, the FDA currently requires as a condition for accelerated approval pre-approval of promotional materials, which could adversely impact the timing of the commercial launch of the product.

The FDA may also accelerate the approval of a designated breakthrough therapy, which is a drug that is intended, alonemarket or in combination with one or more other drugs, to treat a serious or life-threatening disease or conditionactive clinical development include: Remdesivir/Veklury (approved RNApol inhibitor), Dexamethasone (corticosteroid, anti-inflammatory), Bamlanivimab (Lilly, anti-COVID mAbs), and preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. The sponsor of a breakthrough therapy may request the FDA to designate the drug as a breakthrough therapy at the time of, or any time after, the submission of an IND for the drug. If FDA designates a drug as a breakthrough therapy, it must take actions appropriate to expedite the development and review of the application, which may include holding meetings with the sponsor and the review team throughout the development of the drug; providing timely advice to, and interactive communication with, the sponsor regarding the development of the drug to ensure that the development program to gather the nonclinicalCasirivmab/Imdevimab (Regeneron, anti-COVID mAbs).

and clinical data necessary for approval is as efficient as practicable; involving senior managers and experienced review staff, as appropriate, in a collaborative, cross-disciplinary review; assigning a cross-disciplinary project lead for the FDA review team to facilitate an efficient review of the development program and to serve as a scientific liaison between the review team and the sponsor; and taking steps to ensure that the design of the clinical trials is as efficient as practicable, when scientifically appropriate, such as by minimizing the number of patients exposed to a potentially less efficacious treatment.

Fast Track designation, priority review, accelerated approval and breakthrough therapy designation do not change the standards for approval but may expedite the development or approval process. We plan to explore rapid approval opportunities (e.g., Fast Track designation, priority review, accelerated approval and/or breakthrough therapy designation) for emricasan as appropriate for our targeted indications.

Post-Approval Requirements

Any drug products for which we receive FDA approvals are subject to continuing regulation by the FDA, including, among other things, record-keeping requirements, reporting of adverse experiences with the product, providing the FDA with updated safety and efficacy information, product sampling and distribution requirements, and complying with FDA promotion and advertising requirements, which include, among other requirements, standards for direct-to-consumer advertising, restrictions on promoting drugs for uses or in patient populations that are not described in the drug’s approved labeling (known as “off-label use”), limitations on industry sponsored scientific and educational activities, and requirements for promotional activities involving the internet. Although physicians may prescribe legally available drugs for off-label uses, manufacturers may not market or promote such off-label uses.

In addition, quality control and manufacturing procedures must continue to conform to applicable manufacturing requirements after approval. We rely, and expect to continue to rely, on third parties for the production of clinical and commercial quantities of our products in accordance with cGMP regulations. cGMP regulations require among other things, quality control and quality assurance as well as the corresponding maintenance of records and documentation and the obligation to investigate and correct any deviations from cGMP. Drug manufacturers and other entities involved in the manufacture and distribution of approved drugs are required to register their establishments with the FDA and certain state agencies, and are subject to periodic unannounced inspections by the FDA and certain state agencies for compliance with cGMP and other laws. Accordingly, manufacturers must continue to expend time, money, and effort in the area of production and quality control to maintain cGMP compliance. Discovery of problems with a product after approval may result in restrictions on a product, manufacturer, or holder of an approved NDA, including, among other things, recall or withdrawal of the product from the market. In addition, changes to the manufacturing process are strictly regulated, and depending on the significance of the change, may require prior FDA approval before being implemented. Other types of changes to the approved product, such as adding new indications and additional labeling claims, are also subject to further FDA review and approval.

The FDA also may require Phase 4 testing and surveillance to monitor the effects of an approved product or place conditions on an approval that could restrict the distribution or use of the product. Discovery of previously unknown problems with a product or the failure to comply with applicable FDA requirements can have negative consequences, including adverse publicity, judicial or administrative enforcement, warning letters from the FDA, mandated corrective advertising or communications with doctors, and civil or criminal penalties, among others. Newly discovered or developed safety or effectiveness data may require changes to a product’s approved labeling, including the addition of new warnings and contraindications, and also may require the implementation of other risk management measures, such as a REMS. Also, new government requirements, including those resulting from new legislation, may be established, or the FDA’s policies may change, which could delay or prevent regulatory approval of our products under development.

United States Patent Term Restoration and Marketing Exclusivity

Depending upon the timing, duration and specifics of the FDA approval of the use of our drug candidates, some of our U.S. patents may be eligible for limited patent term extension under the Drug Price Competition and

Patent Term Restoration Act of 1984, commonly referred to as the Hatch-Waxman Amendments. The Hatch-Waxman Amendments permit a patent restoration term of up to five years as compensation for patent term lost during product development and the FDA regulatory review process. However, patent term restoration cannot extend the remaining term of a patent beyond a total of 14 years from the product’s approval date. The patent term restoration period is generally one-half the time between the effective date of an IND and the submission date of an NDA plus the time between the submission date of an NDA and the approval of that application. Only one patent applicable to an approved drug is eligible for the extension and the application for the extension must be submitted prior to the expiration of the patent. The U.S. Patent and Trademark Office, in consultation with the FDA, reviews and approves the application for any patent term extension or restoration. In the future, we may intend to apply for restoration of patent term for one of our currently owned or licensed patents to add patent life beyond its current expiration date, depending on the expected length of the clinical trials and other factors involved in the filing of the relevant NDA.

Market exclusivity provisions under the FDCA can also delay the submission or the approval of certain competing marketing applications. The FDCA provides a five-year period of non-patent marketing exclusivity within the United States to the first applicant to obtain approval of an NDA for a new chemical entity. A drug is a new chemical entity if the FDA has not previously approved any other new drug containing the same active moiety, which is the molecule or ion responsible for the action of the drug substance. During the exclusivity period, the FDA may not accept for review an abbreviated new drug application, or ANDA, or a 505(b)(2) NDA submitted by another company for another drug based on the same active moiety, regardless of whether the drug is intended for the same indication as the original innovative drug or for another indication, where the applicant does not own or have a legal right of reference to all the data required for approval. However, an application may be submitted after four years if it contains a certification of patent invalidity or non-infringement to one of the patents listed with the FDA by the innovator NDA holder. The FDCA also provides three years of marketing exclusivity for an NDA or supplement to an existing NDA if new clinical investigations, other than bioavailability studies, that were conducted or sponsored by the applicant are deemed by the FDA to be essential to the approval of the application, for example, clinical investigations to support new indications, dosages or strengths of an existing drug. This three-year exclusivity covers only the modification for which the drug received approval on the basis of the new clinical investigations and does not prohibit the FDA from approving ANDAs for drugs containing the active agent for the original indication or condition of use. Five-year and three-year exclusivity will not delay the submission or approval of any full NDA. However, an applicant submitting a full NDA would be required to conduct or obtain a right of reference to all of the preclinical and clinical trials necessary to demonstrate safety and effectiveness.

Other types of non-patent marketing exclusivity include orphan drug exclusivity under the Orphan Drug Act, which may offer a seven-year period of marketing exclusivity as described above, and pediatric exclusivity under the Best Pharmaceuticals for Children Act, which may add six months to existing exclusivity periods and patent terms. This six-month pediatric exclusivity may be granted based on the voluntary completion of a pediatric trial in accordance with an FDA-issued “Written Request” for such a trial.

Foreign Government Regulation

In addition to regulations in the United States, we will be subject to a variety of regulations in other jurisdictions governing, among other things, clinical trials and any commercial sales, promotion and distribution of our products.

Whether or not we obtain FDA approval for a product, we must obtain the requisite approvals from regulatory authorities in foreign countries prior to the commencement of clinical trials or marketing of the product in those countries. Certain countries outside of the United States have a similar process that requires the submission of a clinical trial application much like an IND prior to the commencement of human clinical trials. In the EU, for example, a clinical trial application, or CTA, must be submitted to each country’s national health authority and an independent ethics committee, much like the FDA and IRB requirements in the United States, respectively. Once the CTA is approved in accordance with a country’s requirements, clinical trials may proceed.

The requirements and process governing the conduct of clinical trials, product licensing, pricing and reimbursement vary from country to country. In all cases, the clinical trials are conducted in accordance with

GCP and the applicable regulatory requirements and the ethical principles that have their origin in the Declaration of Helsinki.

To obtain regulatory approval of a new drug under EU regulatory systems, we must submit a marketing authorization application. The application used to file the NDA in the United States is similar to that required in the EU, with the exception of, among other things, country-specific document requirements.

For other countries outside of the EU, such as countries in Eastern Europe, Latin America or Asia, the requirements governing the conduct of clinical trials, product licensing, pricing and reimbursement vary from country to country. In all cases, again, the clinical trials are conducted in accordance with GCP and the applicable regulatory requirements and the ethical principles that have their origin in the Declaration of Helsinki.

If we fail to comply with applicable foreign regulatory requirements, we may be subject in those countries to, among other things, fines, suspension or withdrawal of regulatory approvals, product recalls, seizure of products, operating restrictions and criminal prosecution.

Reimbursement

Sales of our products will depend, in part, on the extent to which our products will be covered by third-party payors, such as government health care programs, commercial insurance and managed healthcare organizations. These third-party payors are increasingly reducing reimbursements for medical products and services. In addition, the U.S. government, state legislatures and foreign governments have continued implementing cost-containment programs, including price controls, restrictions on reimbursement and requirements for substitution of generic products. Adoption of price controls and cost-containment measures, and adoption of more restrictive policies in jurisdictions with existing controls and measures, could further limit our net revenue and results. Decreases in third-party reimbursement for our product candidates or a decision by a third-party payor to not cover our product candidates could reduce physician usage of our products once approved and have a material adverse effect on our sales, results of operations and financial condition.

Fraud and Abuse Laws

We will also be subject to several healthcare regulation and enforcement by the federal government and the states and foreign governments in which we will conduct our business once our products are approved. The laws that may affect our ability to operate include:

the federal Health Insurance Portability and Accountability Act of 1996 (“HIPAA”), as amended by the Health Information Technology for Economic and Clinical Health Act, which governs the conduct of certain electronic healthcare transactions and protects the security and privacy of protected health information;

the federal healthcare programs’ Anti-Kickback Law, which prohibits, among other things, persons from knowingly and willfully soliciting, receiving, offering or paying remuneration, directly or indirectly, in exchange for or to induce either the referral of an individual for, or the purchase, order or recommendation of, any good or service for which payment may be made under federal healthcare programs such as the Medicare and Medicaid programs;

federal false claims laws which prohibit, among other things, individuals or entities from knowingly presenting, or causing to be presented, claims for payment from Medicare, Medicaid, or other third-party payors that are false or fraudulent;

federal criminal laws that prohibit executing a scheme to defraud any healthcare benefit program or making false statements relating to healthcare matters; and

state law equivalents of each of the above federal laws, such as anti-kickback and false claims laws which may apply to items or services reimbursed by any third-party payor, including commercial insurers.

Employees

As of May 31, 2013,December 28, 2020, we had 19 full-time employees and 15 of our employees 13 of whom are full-time, six of whom hold Ph.D. or M.D. degrees, ten of whom were engaged in research and development activities and six of whom were engaged in business development, finance, information systems, facilities, human resources or administrative support.activities. None of our employees is subject to aare represented by labor unions or covered by collective bargaining agreement.agreements. We consider our relationship with our employees to be good.

Research and DevelopmentProperties

We have invested $9.5 million, $5.5 million, $1.0 million and $41.8 million inlease one floor of a two-story building containing our research and development, for the years ended December 31, 2011manufacturing and 2012, for the three months ended March 31, 2013 and for the period from July 13, 2005 (inception) to March 31, 2013, respectively.

Facilities

We lease approximately 5,349 square feet ofoffice space for our headquarters inlocated at 10655 Sorrento Valley Road, Ste 200, San Diego, California, under anwhich we believe will accommodate our anticipated workforce and near-term growth needs. Our current lease, as amended, expires February 28, 2020. In January 2020, we entered into a new long-term lease agreement thatwith San Diego Sycamore, LLC for office and laboratory space. The new lease commenced on March 1, 2020 and expires in June 2013. We believe thaton August 31, 2031, with no options to renew or extend. Base rent is equal to $59,775 per month at commencement and increases at a fixed rate over the term of the lease. In addition to monthly base rent, we are obligated to pay certain customary amounts for our existing facilities are adequate to meet our current needs,share of operating expenses and that suitable additional alternative spaces will be available in the future on commercially reasonable terms.utilities. The lease agreement includes six months of rent abatement and a tenant improvement allowance for renovations.

Legal Proceedings

We are not currently not a party to any material legal proceedings.proceedings, but we may be a party to certain other litigation that is either judged to be not material or that arises in the ordinary course of business from time to time.

MANAGEMENT

Executive Officers Key Employees and Directors of Histogen

The following table sets forth the name, age and position of each ofinformation regarding our executive officers key employees and directors as of March 31, 2013.December 28, 2020:

 

Name

  Age  

Position(s)

Position

Executive Officers

  

Richard W. Pascoe

56

Director, President & Chief Executive Officer

Susan A. Knudson

56

Executive Vice President, Chief Financial Officer

Gail K. Naughton, Ph.D.

65

Founder, Chief Scientific Officer and Chief Business Officer

Martin Latterich, Ph.D.

54

Vice President, Technical Operations

Moya Daniels

52

Executive Vice President, Head of Regulatory, Quality and Clinical Operations

Non-Employee Directors

  

Steven J. Mento, Ph.D.

  6168  President, Chief Executive Officer and

Director

Alfred P. Spada, Ph.D.

55Senior Vice President, R&D, Chief Scientific Officer

Gary C. Burgess, M.B., Ch.B. M.Med.

51Senior Vice President, Clinical Research, Chief Medical Officer

Charles J. Cashion

62Senior Vice President, Finance, Chief Financial Officer, Secretary

Key Employee

Daniel L. Ripley

52Senior Director, Head of Corporate Development

DirectorsDaniel L. Kisner, M.D.

  73

Director

Stephen Chang, Ph.D.

  65

Director

David F. Hale(1)(3)

64Chairman of the Board of Directors

Paul H. Klingenstein(2)Crean, Ph.D.

57Director

Louis Lacasse(2)

  56  

Chairman & Director

Director

Shahzad Malik, M.D.(2)Jonathan Jackson

  4659  

Director

Director

Marc Perret(3)Brian M. Satz

  5448  

Director

Director

James Scopa(1)Hayden Yizhuo Zhang

  5432  

Director

Harold Van Wart, Ph.D.(3)

65Director

(1)

Member of the compensation committee

(2)

Member of the audit committee

(3)

Member of the nominating and corporate governance committee

Executive Officers

Richard Pascoe has served as our Chief Executive Officer, President and a member of the Board of Directors since the Merger in May 2020. Prior to that, Mr. Pascoe served as a director and as Chairman and Chief Executive Officer of Private Histogen from January 2019 to May 2020. He joined Private Histogen following the merger of Apricus Biosciences Inc. and Seelos Therapeutics, Inc. Mr. Pascoe was the Chief Executive Officer of Apricus Biosciences, Inc. from March 2013 until joining Private Histogen. Prior to Apricus, Mr. Pascoe was with Somaxon Pharmaceuticals, Inc. where he served as the Chief Executive Officer. Prior to joining Somaxon in 2008, Mr. Pascoe served as Chief Operating Officer at ARIAD Pharmaceuticals, Inc. Prior to ARIAD, Mr. Pascoe held a series of senior management roles at King Pharmaceuticals, Inc. (acquired by Pfizer Inc.), including Senior Vice President positions in King’s international and hospital commercial business units. Prior to King, Mr. Pascoe held commercial roles in the hospital pharmaceutical and medical device groups at Medco Research, Inc. (acquired by King), COR Therapeutics, Inc. (acquired by Millennium Pharmaceuticals Inc.), and B. Braun Interventional. Mr. Pascoe is a member of the board of directors of KemPharm, Inc., as well as a member of the company’s audit and compensation committees and its lead independent director. He also serves as a member of the board of directors of Seelos Therapeutics, Inc. He is also a member of the board of directors of Biocom, California’s leading advocate for the life sciences industry, and the Johnny Mac Soldiers Fund, a charity for military veterans. Mr. Pascoe served on active duty as a Commissioned Officer with the U.S. Army’s 24th Infantry Division to include one combat tour in Iraq earning several awards and decorations including the Bronze Star Medal. He is a graduate of the United States Military Academy at West Point where he received a B.S. degree in Leadership. Mr. Pascoe currently serves as the Civilian Aide to the Secretary of the Army for Southern California, where he serves as a volunteer liaison between the Secretary and the local community.

Susan A. Knudson has served as our Executive Vice President and Chief Financial Officer since May 2020. Previously, Ms. Knudson served as Senior Vice President, Chief Financial Officer at Pfenex Inc., a biopharmaceutical company, from February 2018 until November 2019. From 2009 to 2017, Ms. Knudson held various roles at Neothetics, Inc., a specialty pharmaceutical company, including Chief Financial Officer from 2014 to 2017 and Vice President of Finance and Administration from 2009 to 2014. Prior to joining Neothetics, Ms. Knudson served as Senior Director of Finance and Administration at Avera Pharmaceuticals, a pharmaceutical company, from May 2002 to January 2009. Prior to May 2002, Ms. Knudson served as Director of Finance and Administration at MD Edge, Inc., a medical communications company, from October 2000 to April 2002. Prior to joining MD Edge, Ms. Knudson served as Assistant Director of Accounting at Isis Pharmaceuticals, a pharmaceutical company, from April 2000 to October 2000. Ms. Knudson has also held senior positions at CombiChem, General Atomics and Deloitte & Touche. Ms. Knudson holds a B.A. in Accounting from the University of San Diego.

Gail K. Naughton, Ph.D. has served as our Chief Scientific Officer, Chief Business Officer & Founder since the Merger in May 2020. Dr. Naughton founded Private Histogen in 2007 and served as its Chief Scientific Officer, Chief Business Officer & Founder from 2007 until 2020. She has spent more than 30 years extensively researching the tissue engineering process, holds more than 100 U.S. and foreign patents and has been extensively published in the field. She previously served as co-founder and co-inventor of Advanced Tissue Sciences, a manufacturer of human skin for wound healing and skin treatments. At ATS, Dr. Naughton held a variety of key management positions, including president, chief operating officer, chief scientific officer and principal scientist. While serving as an officer and director of the company, Dr. Naughton oversaw the design and development of the world’s first up-scaled manufacturing facility for tissue engineered products, established corporate development and marketing partnerships with companies including Smith & Nephew, Ltd., Medtronic and Inamed Corporation, was pivotal in raising over $350M from the public market and corporate partnerships, and brought four human cell-based products from concept through FDA approval and market launch. Following ATS, Dr. Naughton served as Dean of the College of Business Administration at San Diego State University from 2002 until 2011, where she helped to make SDSU the first US campus to establish a Ph.D./MBA in life sciences. In 2000, Dr. Naughton received the 27th Annual National Inventor of the Year award by the Intellectual Property Owners Association in honor of her pioneering work in the field of tissue engineering. Dr. Naughton received her Ph.D. and M.S. from NYU Medical, and an MBA from UCLA. She currently sits on several scientific advisory boards.

Martin Latterich, Ph.D. has served as our Vice President of Technical Operations since the Merger in May 2020. Previously, Dr. Latterich served as the Vice President of Technical Operations at Private Histogen from October 2016 until the Merger in May 2020. Prior to joining Histogen, from June 2012 through December 2016, Dr. Latterich served as an executive of the biotechnology firm ProterixBio (formerly BioScale), Inc., where he currently now serves as the Chief Scientific Officer. He is author of 39 publications and one book, and has served as Editor-in-Chief of Proteome Science since 2002. Dr. Latterich is a 1998 Pew Scholar and has held a Tier I Canada Research Chair at McGill University.

Moya Daniels has served as our Executive Vice President and Head of Regulatory Affairs, Quality & Clinical Operations since October 2020. Ms. Daniels brings over 30 years of experience in the field of the life sciences industry to Histogen. Prior to joining Histogen, Ms. Daniels was Senior Vice President of GMP Quality at SanBio, where she successfully led the CMC regulatory development and GMP Quality function in support of the planned Japan commercialization of their lead product candidate. From 2017 to 2019, Ms. Daniels was the Senior Vice President of Regulatory Affairs and Global Quality Assurance at Orchard Therapeutics, where she led the company’s CMC regulatory and GXP quality strategy and was part of the team that led the in-licensing of GSK’s rare disease gene therapy portfolio. Prior to joining Orchard, Ms. Daniels served as Vice President of Regulatory Affairs

and Quality Assurance at Fate Therapeutics, Inc, where she led the development of the global regulatory strategy and quality assurance function and was interim head of Clinical Operations. Ms. Daniels led development of the global regulatory strategy, quality and global clinical operations which led to the approval of Prochymal®, the first approved allogeneic cell therapy indicated for the treatment of pediatric steroid refractory acute Graft Versus Host Disease in Canada and New Zealand. Ms. Daniels held a senior leadership position at Macrocure as Vice President of Global Regulatory Affairs. Moya currently serves as a Scientific Advisory Board member for Indapta Therapeutics. Ms. Daniels holds a B.S. in Biology from Saint Augustine College, completed two years of academic studies in Medicine at Ross University and has an M.S. in Healthcare Administration from the University of Maryland University College.

Non-Employee Directors

David H. Crean, Ph.D. has served as a member and Chairman of our Board of Directors since the Merger in May 2020 and previously as director at Histogen from March 2018 until the Merger. Since March 2018, Dr. Crean has been the Chief Executive Officer and a director at Talapo Therapeutics. Since September 2015, he has been a Managing Director at Objective Capital Partners where he leads the firm’s life science investment banking transactions. From 2013 to 2015, he was the President and Chief Executive Officer of the Boys & Girls of San Dieguito. Dr. Crean has in excess of 20 years of life sciences R&D and corporate development transactional experience in the pharmaceutical industry where he was responsible for leading mergers, acquisitions, licensing and collaborations, and establishing corporate strategy. Prior to joining Objective Capital Partners, Dr. Crean served over 20 years in specialty pharmaceuticals; namely at Allergan and Aqua Pharmaceuticals, a private equity-backed company, prior to it being sold to Almirall, SA. Concurrent with Objective Capital, Dr. Crean serves as a strategic business advisor for several life science companies, is an active member on BIOCOM’s Capital Development Committee and BIO International 2017 Partnering Committee and a contributing member on the Membership & Program Committees for the Association for Corporate Growth (ACG) in San Diego. Dr. Crean holds a Masters of Business Administration Degree with a finance concentration from Pepperdine University School of Management. Additionally, he holds a Doctorate of Philosophy Degree in Biophysics and a Masters of Science Degree in Oncology from the State University of New York at Buffalo. Dr. Crean also earned a Bachelor of Science Degree in Biology from Canisius College. We believe Dr. Crean is qualified to serve as a director based on his over 25 years of life sciences R&D and corporate development transactional experience in the pharmaceutical industry, during which he was responsible for leading mergers, acquisitions, licensing and collaborations and establishing corporate strategy.

Daniel L. Kisner, M.D. has served as a member of our board of directors since February 2014. He currently serves as an independent consultant in the life science industry. He was a partner at Aberdare Ventures from 2003 to 2011. Dr. Kisner served as Chairman of the Board of Directors of Caliper Life Sciences from 2002 to 2008, and as President and CEO of its predecessor company, Caliper Technologies, from 1999 to 2002. He held positions of increasing responsibility at Isis Pharmaceuticals, Inc., from 1991 to 1999, most recently as President and COO. Dr. Kisner previously served in pharmaceutical research and development executive positions at Abbott Laboratories from 1988 to 1991 and at SmithKline Beckman Laboratories from 1985 to 1988. He held a tenured faculty position in the Division of Medical Oncology at the University of Texas, San Antonio School of Medicine until 1985 after a five-year advancement through the Cancer Treatment Evaluation Program of the National Cancer Institute. Dr. Kisner is board certified in internal medicine and medical oncology. Dr. Kisner holds a B.A. from Rutgers University and an M.D. from Georgetown University. Dr. Kisner currently serves as a director at Zynerba Pharmaceuticals, Dynavax Technologies Corporation and Oncternal Therapeutics, and has extensive prior private and public company board experience, including serving as Chairman of the Board of Directors at Tekmira Pharmaceuticals. We believe

Dr. Kisner is qualified to serve on our board of directors because of his extensive leadership experience in the biotechnology and biopharmaceutical industries and as a venture capital investor.

Stephen Chang, Ph.D. has served as a member of our Board of Directors since the Merger in May 2020 and previously served as a director of Private Histogen from 2007 until the Merger. He served as Histogen’s Interim Chief Executive Officer from April 2017 to January 2019. In addition to Histogen, Dr. Chang serves on the Scientific Advisory Board or Board of Directors for GT Biopharma, Orphesus Therapeutics, Cloak Therapeutics, Aegis Therapeutics and Legacy Therapeutics. He also serves as Director of Research for One Med Research, a life science communications and analysis firm in NYC. He is an active a consultant for several small emerging life science companies in NYC area in the area of tools, technology and business strategy, and is an entrepreneur in residence at Rutgers and New York University. Dr. Chang recently retired from the New York Stem Cell Foundation (NYSCF). As Senior Vice President for Strategic Initiatives and Research, Dr. Chang had overall responsibility for planning, coordinating, and managing the activities of the research department. In this role, he provided senior leadership in the areas of research and development, oversight of short and long term projects with regulations and policies related to administration and business units, partnerships with industry and other research institutions, and supervision and evaluation of internal and external projects and intellectual property. Dr. Chang oversaw the growth of NYSCF from 2010 to 2017 in several large-scale stem cell initiatives as well as its transition to a standalone research institute. Prior to joining NYSCF, Dr. Chang founded Stemgent, Inc. in 2008 and served as the company’s Chief Scientific Officer. He was previously the CEO of Multicell Technologies and continues as a Director of this Company. He has been involved in Viagene, Chiron and Canji/Schering Plough in the area of gene and cancer therapy. Dr. Chang was president of CURES, a coalition of patient advocates, biotechnology companies, pharmaceutical companies, and venture capitalists dedicated to ensuring the safety, research, and development of innovative lifesaving medications. Under Dr. Chang leadership, CURES established prop 78 that prevented the re-importation of drugs to California from transcontinental shipments. Dr. Chang received his Ph.D. in biological chemistry, molecular biology, and biochemistry from the University of California, Irvine and an undergraduate B.S. from University of Michigan. Dr. Chang is active in the Alliance of Regenerative Medicine, CCRM and Global Initiative for IPSC Therapy and ISSCR. Dr. Chang has long term interest in teaching and public policy of science and continues as a registered CA lobbyist. Areas of research interest include translational applications of basic science to pharmaceutical products, stem cell therapies and gene therapies. We believe Dr. Chang is qualified to serve on our board of directors based on his scientific background and ability to contribute to the board’s understanding of technical matters related to the company’s business, as well as Dr. Chang’s broader business development and corporate experience.

Jonathan Jackson has served as a member of our Board of Directors since the Merger in May 2020 and previously served as a director of Private Histogen from December 2010 until the Merger. A few years after completing his degree in Business Management in London, Mr. Jackson set up his own company to develop commercial real estate in Central Europe. Over the last 20 years, he has currently under development and developed more than 6,000,000 square feet of space. Since selling a portfolio of completed assets in early 2007 in one of the largest deals in Central Europe, Mr. Jackson has diversified and invested over $15M in different business sectors, both in the USA and Europe, with great success. We believe Mr. Jackson is qualified to serve on our board of directors based on the depth and diversity of his experience in business management and investment banking.

Hayden Yizhuo Zhang has served as a member of our Board of Directors since the Merger in May 2020 and previously served as a director of Private Histogen from September 2016 until the Merger. In addition to Histogen, Mr. Zhang is currently the director of Strategy and Investment Department of Huapont Life Sciences where he is in charge of all aspects of the group investment activities. He has successfully lead the acquisitions of several hospitals and biotech companies out of China and has years of experience in capital markets. Mr. Zhang became the CEO of Huapont Huiyi

Investment Co., in 2014 which is focused on investing and developing health-related Services. Prior to this he served as the Assistant to General Manager of Hengyuan Investment Co., in 2012. He also worked for Vanguard Logistics Co., in Australia and was responsible for trading in the Chinese market. We believe Mr. Zhang is qualified to serve on our board of directors based on the depth and diversity of his experience in business management and investment banking.

Steven J. Mento, Ph.D. is one of our co-founders and has served as our President and Chief Executive Officer and as a member of our board of directors since July 2005. Dr. Mento was one of Conatus’ co-founders and served as Conatus’ President and Chief Executive Officer from July 2005 until the Merger. From July 2005 until December 2012, Dr. Mento also served as chairman of ourConatus’ board of directors. Dr. Mento has over 30 years of combined experience in the biotechnology and pharmaceutical industries. From 1997 to 2005, Dr. Mento was President, Chief Executive Officer and a member of the Board of Directors of Idun Pharmaceuticals, Inc. Dr. Mento guided Idun during its transition from a discovery focused organization to a drug development company with multiple products in or near human clinical testing. In April 2005, Idun was sold to Pfizer Inc. Previously, Dr. Mento served as President of Chiron Viagene, Inc. (subsequently Chiron Technologies, Center for Gene Therapy), and Vice President of Chiron Corporation from 1995 to 1997. Dr. Mento was Vice President of R&D at Viagene from 1992 to 1995. Prior to Viagene, Dr. Mento held various positions at American Cyanamid Company from 1982 to 1992. His last position was Director of Viral Vaccine Research and Development at Lederle-Praxis Biologicals, a business unit of American Cyanamid. Dr. Mento previously served on the board of directors of Sangamo Biosciences, Inc., BIO, BIO Emerging Company Section Governing Body and BIO Health Section Governing Body, and currently serves on the boards of directors of BIOCOM the Biotechnology Industry Organization (BIO), BIO Emerging Company Section Governing Body, BIO Health Section Governing Body, Sangamo Biosciences, Inc., and various academic and charitable organizations. Dr. Mento holds a B.A. in Microbiology from Rutgers College, and an M.S. and Ph.D. both in Microbiology from Rutgers University. We believe Dr. Mento’sMento is qualified to serve on our board of directors because of his extensive knowledge of ourConatus’ business prior to the merger, as well as his over 30 years of experience in the biotechnology and pharmaceutical industries, including executive leadership in several pharmaceutical companies, contributed to our board of directors’ conclusion that he should serve as a director of our company.companies.

Alfred P. Spada, Ph.D.is one of our co-founders and has served as our Senior Vice President, Research and Development since July 2005, and as our Chief Scientific Officer since April 2012. Dr. Spada has over 28 years of experience in the pharmaceutical and biotechnology industries. He has co-authored more than 50 scientific

publications and is an inventor on more than 70 patents. From 2000 to 2005, Dr. Spada was Vice President of Pharmaceutical and Preclinical Development at Idun Pharmaceuticals where he was responsible for managing internal research and development activities, and Idun’s external partnerships, including the collaboration with Abbott Laboratories. Prior to joining Idun, Dr. Spada was a Department Director at Aventis Pharmaceuticals (formerly Rhone-Poulenc Rorer), where he was responsible for medicinal and analytical chemistry. From 1990 to 2000, his teams worked on a wide variety of enzyme-based and G-protein coupled receptors (GCPR) targets, resulting in the identification of clinical candidates for treatment of acute myocardial infarction, thrombotic disorders, coronary restenosis, lipid lowering, diabetes and cancer. His team discovered otamixaban, a direct acting factor Xa inhibitor currently in Phase 3 clinical trials for the treatment of acute coronary syndrome. Dr. Spada holds a B.S. in Chemistry from Worcester Polytechnic Institute and a Ph.D. in Chemistry from the Massachusetts Institute of Technology.

Gary C. Burgess M.B., Ch.B. M.Med.(Int.)(Stell.) MFPM has served as our Senior Vice President, Clinical Research, and Chief Medical Officer since November 2011. In April 2012, he was appointed to the Population and Systems Medicine Board at the Medical Research Council. Dr. Burgess has over 14 years of experience in the pharmaceutical industry. From 1999 to October 2011, Dr. Burgess held positions of increasing seniority at Pfizer Ltd in Sandwich in the United Kingdom, most recently as Senior Director and Clinical Portfolio Lead for Asia Research. In this position, he had clinical oversight of all aspects of the Pfizer liver fibrosis program including clinical program design, development and execution, regulatory and key opinion leader interactions, and evaluation and establishment of external collaborations for fibrotic disease biomarker development. During the period following the acquisition of Idun Pharmaceuticals by Pfizer, Dr. Burgess’ responsibilities included data integration, clinical oversight of ongoing Phase 2 studies, development of clinical plans and registration strategies for the Idun caspase inhibitor, IDN-6556, which was later renamed emricasan. Dr. Burgess has also previously held the position of Medical Development Team Leader for Thelin in the Pfizer Specialty Care Business Unit and from 2001 to 2004 was the clinician responsible for the studies with sildenafil in Pulmonary Arterial Hypertension which led to the registration of Revatio in 2005. Prior to joining Pfizer, Dr. Burgess held the position of Principal Consultant and Head of the Intensive Care Unit and Casualty Department at II Military Hospital in Cape Town, South Africa, as well as holding honorary consultant posts in the Gastroenterology Departments at both Tygerberg and Groote Schuur Hospitals, in addition to conducting a limited private practice as a general internist. Dr. Burgess holds a M.B., Ch.B. and M.Med. in Internal Medicine from the University of Stellenbosch, South Africa, and a diploma in Pharmaceutical Medicine from Cardiff University, United Kingdom.

Charles J. Cashionis one of our co-founders and has served as our Senior Vice President, Finance, Chief Financial Officer, and Secretary since July 2005. From 2001 to 2005, Mr. Cashion was Chief Financial Officer at Idun. Mr. Cashion has held several senior level management positions in both private and public healthcare companies with responsibilities for securing and executing various types of financings including initial public offerings, secondary offerings, corporate partnerships, and debt. He has also been involved with the strategic planning, acquisition and integration of several technology companies. Mr. Cashion joined Idun Pharmaceuticals in 2001 as Executive Vice President, Chief Financial Officer and Secretary. Previously, Mr. Cashion held the position of Senior Vice President and Chief Financial Officer of Quidel Corporation, a publicly-held medical diagnostics company. For the prior nine years, Mr. Cashion was Senior Vice President, Finance, and Chief Financial Officer of The Immune Response Corporation, a publicly-held biopharmaceutical company. During the period from 1980 to 1989, Mr. Cashion was Executive Vice President and Chief Financial Officer of Smith Laboratories, Inc., a publicly-held pharmaceutical company and during 1987 through 1989 was also President and Chief Executive Officer of Sutter Corporation, an orthopedic products subsidiary of Smith Laboratories. Mr. Cashion also held positions at Baxter International, Inc. and Motorola, Inc. Mr. Cashion currently serves on the boards of directors of NovaBay Pharmaceuticals, Inc., Ridge Diagnostics, Inc., La Jolla Institute for Allergy & Immunology, and iDiverse, Inc. Mr. Cashion holds an M.B.A. and B.S. in Accounting from Northern Illinois University.

Key Employee

Daniel L. Ripleyhas served as our Senior Director, Head of Corporate Development since July 2012. Mr. Ripley has 15 years of integrated business development experience in the initiation and execution of strategic

business transactions in emerging growth life science companies. He has led licensing, commercial analysis, partnering initiatives, and intellectual property enforcement to drive business development of early-to-late stage products in a wide variety of therapeutic areas and technologies. Mr. Ripley served as Senior Director of Business Development at Apricus Biosciences from 2011 through 2012, and prior to that was a senior business development consultant to biotechnology companies in the San Diego area from 2010 through 2011, Vice President of Business Development at BioBlocks, Inc. from 2009 through 2010, Senior Director, Head of Business Development at Kalypsys, Inc. from 2006 through 2008, and Director of Business Development at Isis Pharmaceuticals from 2000 through 2006. During this timeframe, he executed multiple licensing and drug discovery collaborations with pharmaceutical and biotechnology companies that included Pfizer, Oncogenex, Alnylam, Amgen, GSK, Sanofi, and Alcon. Mr. Ripley holds an M.B.A. with an emphasis in Finance and a B.S. in Microbiology, both from San Diego State University.

Non-Employee Directors

David F. HaleBrian Satz has served as a member of our boardBoard of directorsDirectors since October 2006the Merger in May 2020 and chairman of the board since December 2012. Since May 2006, Mr. Hale haspreviously served as Chairman & CEOa director of Hale BioPharma Ventures, a private company focused onPrivate Histogen from November 2012 until the formationMerger. In addition to Histogen, Mr. Satz is an attorney and developmentfounder of biotechnologySatz Law Group LLC in Fairfield, New Jersey. Mr. Satz has extensive experience representing clients in all aspects of corporate and specialty pharma companies. He was previously Presidentcommercial transactions as well as their day-to-day business matters. In particular, he has advised numerous investors and CEO of CancerVax Corporation which merged with Micromet, Inc., a cancer therapeutic company, from October 2000 through May 2006, when he became Chairman ofbusinesses in the combined companies. Mr. Hale is a serial entrepreneur whobiotech and life sciences industries and has been involved in the founding and/or developmentfinancing of a number of biotechnology and specialty pharmaceuticalmany early stage companies. After joining Hybritech, Inc., in 1982, the first monoclonal antibody company, he was President & Chief Operating Officer and became CEO in 1986, when Hybritech was acquired by Eli Lilly and Co. From 1987 to 1997 he was Chairman, President and CEO of Gensia, Inc., which merged with SICOR to become Gensia Sicor, Inc., which was acquired by Teva Pharmaceuticals. He was a co-founder and Chairman of Viagene, Inc. from 1987 to 1995, when Viagene was acquired by Chiron, Inc. He was President and CEO of Women First HealthCare, Inc. from late 1997 to June 2000. Prior to joining Hybritech,the founding of Satz Law Group, Mr. Hale was Vice President and General ManagerSatz spent the vast majority of BBL Microbiology Systems, a division of Becton, Dickinson & Co. and from 1971his career working at large New York City based law firms. We believe Mr. Satz is qualified to 1980, held various marketing and sales management positions with Ortho Pharmaceutical Corporation, a division of Johnson & Johnson, Inc. Mr. Hale is Chairman of Santarus, Inc., a publicly-held company, and previously served as Chairman of Somaxon, Inc. prior to its acquisition in 2013. He also serves as Chairman of privately-held Colorescience, Inc., Ridge Diagnostics, Crisi, Inc., Intrepid Therapeutics, Neurelis, Inc., Agility Clinical, Advantar Laboratories, Inc. and Katama Pharmaceuticals, Inc. Mr. Hale also is a co-founder and servesserve on the Board of Directors of BIOCOM, is a former member of the Board of the Biotechnology Industry Organization (BIO), and the Biotechnology Institute. Mr. Hale also serves on the Board of Directors of the San Diego Economic Development Corporation, and as Chairman of the Board of Trustees of Rady Children’s Hospital of San Diego. He is a co-founder of the CONNECT Program in Technology and Entrepreneurship. Mr. Hale holds a B.A. in Biology and Chemistry from Jacksonville State University. Mr. Hale’s extensive knowledge of our business and history, experience as a board member of multiple publicly-traded and privately-held companies, and expertise in developing, financing and providing strong executive leadership to numerous biopharmaceutical companies contributed to our board of directors’ conclusion that he should servedirectors based on his ability to contribute to the board’s understanding of legal matters related to the company’s business, as a director of our company.well as Mr. Satz’s broader management experience.

Paul H. Klingenstein has served as a memberBoard Composition

Our business and affairs are managed under the direction of our board of directors since October 2005. Mr. Klingenstein has been a venture capital investor for most of his professional career. Beginning at Warburg, Pincus in the early 1980s, he joined Accel Partners in 1986 and helped, through the next decade, to build a leading venture capital firm. After a brief period as an advisor to the Rockefeller Foundation, he formed Aberdare Ventures in 1999, and has served as a Managing Partner since that time. During this period, he has invested in more than 50 companies, the majority of which are now public, or have been merged into public companies. These investments comprise mostly early-stage domestic businesses, but also include later-stage, public, and non-U.S. companies, and management buyouts. Mr. Klingenstein currently serves on the boardsdirectors. The number of directors of Anacor Pharmaceuticals, Aviir, Clovis Oncology, Elation ERM, EnteroMedics, and MC10, Inc. He has previously served on the boards of Ablation Frontiers, Ample Medical, Aviron, EP Technologies, Glycomed, Idun Pharmaceuticals, Isis Pharmaceuticals, Nevro Corporation, Pharmion, Posit Science, VertiFlex, U.S. Behavioral Health Viagene, and

Xomed Surgical Products. Mr. Klingenstein is also serving as Chairman of the Board of the International AIDS Vaccine Initiative and is a board member of the MacArthur Foundation. He has served on the boards of various educational and non-profit institutions, including the African Wildlife Foundation, Juma Ventures, Marin Country Day School, the Taft School, and the University of California Berkeley School of Public Health. He holds an A.B. from Harvard College and an M.B.A. from Stanford University. Mr. Klingenstein’s extensive experience as a venture capital investor in over 50 companies in the biotechnology and pharmaceuticals industries, as well as his experience as a director for numerous public companies, contributed to our board of directors’ conclusion that he should serve as a director of our company.

Louis Lacassehas served as a member offixed by our board of directors, since February 2011. Mr. Lacasse has been President of GeneChem Management Inc. since 1997 and Managing Partner of AgeChem Financial Inc. since 2006. GeneChem and AgeChem are managing three lifesciences venture capital funds which have invested in more than 40 companies in Canada,subject to the United States and Europe. Prior to joining GeneChem, Mr. Lacasse worked at the Caisse de dépôt et de placement du Québec, where he held several positions between 1987 and 1997, including Vice-President of Sofinov, a private placement subsidiary of the Caisse which focused on biotechnology, information technology and industrial technology. Before joining the Caisse, Mr. Lacasse worked as a financial analyst with the National Bank of Canada, as Account Manager at the Bank of Montreal and as Project Manager at the Centre de Développement Technologique. He has also owned a small retail company. Mr. Lacasse currently serves on the boards of directors of Calyx Bio-Ventures Inc., Botaneco Corp. and Alethia Biotherapeutics, Inc. He also has served on the boards of directors of BioChem Pharma Inc., Axcan Pharma Inc., Targeted Genetics Inc., Methylgene Inc. and Idun Pharmaceuticals Inc. Mr. Lacasse holds a bachelor’s degree in finance from the Ecole des Hautes Etudes Commerciales and an M.B.A. from McGill University. Mr. Lacasse’s extensive experience as a board member and chairman of audit and compensation committees of numerous public companies, as well as his extensive experience as a venture capital investor in over 40 companies in the biotechnology and pharmaceuticals industries, contributed to our board of directors’ conclusion that he should serve as a directorterms of our company.

Shahzad Malik, M.D.has served as a memberamended and restated certificate of our board of directors since February 2009. Dr. Malik is a General Partner at Advent Venture Partners, a position he has held since 1999. During his time with Advent, he has been actively involved with numerous investments in Europeincorporation and the United States in the biopharmaceuticalamended and medical device arenas in a variety of therapeutic areas. A number of these are now publicly traded or have been acquired. Prior to joining Advent, Dr. Malik spent six years practicing medicine before joining the London office of management consultants McKinsey & Company. While there he served international clients in the Healthcare and Investment Banking sectors. Dr. Malik holds an M.A. from Oxford University and a M.D. from Cambridge University. He subsequently specialized in interventional cardiology while also pursuing research interests in heart muscle disorders both in the clinic and basic science laboratory. Dr. Malik’s medical background and training and his extensive experience as a venture capital investor in the biopharmaceutical and medical device industries, contributed to our board of directors’ conclusion that he should serve as a director of our company.

Marc Perrethas served as a member of our board of directors since December 2006. Mr. Perret is a Managing Partner at Gilde Healthcare Partners (Utrecht, The Netherlands), a position he has held since December 2006. Mr. Perret is involved with fund raising, fund management, as well as investment activities. He represents or represented Gilde Healthcare Partners on the boards of portfolio companies, such as Belgium-based Crop Design (sold to BASF), France-based Innate Pharma (listed on EuroNext) and France-based Neuro3d (merged with Evotec AG). Prior to joining Gilde Healthcare Partners in October 2000, Mr. Perret gained operational and international experience during 17 years at the Novartis [Ciba] Group, in business development, restructuring, as country division head and ultimately as M&A Head of one of Novartis’ divisions. His track record includes a $1 billion acquisition of a Merck & Co. division, direct involvement in the multi-billion merger and listing of Switzerland-based Syngenta, and several smaller biotechnology deals. Mr. Perret is an engineer from Ecole Centrale de Lyon and received an M.B.A. from HEC Group / Stanford GSB. Mr. Perret’s experience as a venture capitalist investing in and serving on the boards of multiple life sciences companies and his extensive operational and international experience in the biopharmaceutical industry contributed to our board of directors’ conclusion that he should serve as a director of our company.

James Scopahas served as a member of our board of directors since March 2011. Mr. Scopa is a Managing Director in MPM Capital’s San Francisco office, having joined the firm in 2005. Previously, Mr. Scopa spent 18 years advising growth companies in biopharmaceuticals and medical devices at Deutsche Banc Alex. Brown and Thomas Weisel Partners. At Deutsche Banc Alex. Brown he served as Managing Director and Global Co-Head of Healthcare Investment Banking. At Thomas Weisel Partners he served on the Investment Committee for TWP’s Health Care venture fund as well as Co-Director of Healthcare Investment Banking. He holds an A.B. from Harvard College (Phi Beta Kappa), an M.B.A. from Harvard Business School and a J.D. from Harvard Law School. Mr. Scopa currently serves on the boards of directors of Astute Medical, Inc., iPierian, Solasia Pharma K.K., and TriVascular, Inc., and has previously served on the board of Peplin, Inc. (sold to LEO Pharmaceuticals). Mr. Scopa’s extensive experience as a venture capital investor in the biotechnology and biopharmaceuticals industries, prior experience as an investment banker in those industries, and his service as a director for numerous companies, contributed to our board of directors’ conclusion that he should serve as a director of our company.

Harold E. Van Wart, Ph.D.has served as a member of our board of directors since March 2007. Dr. Van Wart has served as Metabolex, Inc.’s Chief Executive Officer since 2003, a member of its board of directors since January 2003, and President since April 2001. He served as Chief Operating Officer from December 2002 to January 2003 and Senior Vice President, Research and Development from October 2000 to December 2002. From 1999 to 2000, Dr. Van Wart was vice president and therapy head for arthritis and fibrotic diseases at Roche Biosciences, a division of Syntex (U.S.A.) Inc., a biopharmaceutical company. From 1992 to 1999, he was vice president and director of the institute of biochemistry and cell biology at Syntex (U.S.A.) Inc., a biopharmaceutical company acquired by an affiliate of Roche Holding Ltd in 1994. From 1978 to 1992, Dr. Van Wart served on the faculty of Florida State University. Dr. Van Wart holds a Ph.D. from Cornell University and a B.A. from SUNY Binghamton. He currently serves on the Emerging Companies and Health Section Governing Boards of BIO, as well as on its board of directors. Dr. Van Wart’s extensive leadership experience in the biotechnology and biopharmaceutical industries contributed to our board of directors’ conclusion that he should serve as a director of our company.

Board Composition and Election of Directors

Director Independence

restated bylaws. Our board of directors currently consists of eight members.directors, seven of whom qualify as “independent” under the Nasdaq Capital Market, or Nasdaq, listing standards. Our boardamended and restated certificate of directors has determinedincorporation and our amended and restated bylaws provide that all of our directors, other than Dr. Mento, are independent directors in accordance with the listing requirements of The NASDAQ Global Market. The NASDAQ independence definition includes a series of objective tests, including that the director is not, and has not been for at least three years, one of our employees and that neither the director nor any of his family members has engaged in various types of business dealings with us. In addition, as required by NASDAQ rules, our board of directors has made a subjective determination as tois divided into three classes with staggered three-year terms. Only one class of directors will be elected at each independent director that no relationships exist, which, in the opinionannual meeting of our board of directors, would interferestockholders, with the exerciseother classes continuing for the remainder of independent judgmenttheir respective three-year terms. Our directors are divided among the three classes as follows:

Class I directors (expiring in carrying out the responsibilities of a director. In making these determinations, our board of2023): Richard W. Pascoe and Daniel L. Kisner, M.D.;

Class II directors reviewed(expiring in 2021): Stephen Chang, Ph.D., Jonathan Jackson and discussed information provided by theHayden Yizhuo Zhang; and

Class III directors (expiring in 2022): Steven J. Mento, Ph.D., David H. Crean, Ph.D. and us with regard to each director’s business and personal activities and relationships as they may relate to us and our management. Brian M. Satz.

There are no family relationships among any of our directors orand executive officers.

Classified Board of Directors

In accordance with the terms of our amended and restated certificate of incorporation that will go into effect immediately prior to the closing of this offering, our board of directors will be divided into three classes with staggered, three-year terms. At each annual meeting of stockholders, the successors to directors whose terms then expire will be elected to serve from the time of election and qualification until the third annual meeting following election. Effective upon the closing of this offering, our directors will be divided among the three classes as follows:

the Class I directors will be             ,              and             , and their terms will expire at our first annual meeting of stockholders following this offering;

the Class II directors will be             ,              and             , and their terms will expire at our second annual meeting of stockholders following this offering; and

the Class III directors will be             ,              and             , and their terms will expire at our third annual meeting of stockholders following this offering.

Our amended and restated certificate of incorporation that will go into effect immediately prior to the closing of this offering will provide that the authorized number of directors may be changed only by resolution of the board of directors. Any additional directorships resulting from an increase in the number of directors will be distributed among the three classes so that, as nearly as possible, each class will consist of one-third of the directors. The division of our board of directors into three classes with staggered three-year terms may delay or prevent a change of our management or a change in control of our company. Our directors may be removed only for cause by the affirmative vote of the holders of at least 66 2/3% of our outstanding voting stock then entitled to vote in the election of directors.

Board Leadership Structure

Our board of directors is currently led by its chairman,has an independent Chairman, David Hale. OurH. Crean, who has authority, among other things, to call and preside over board meetings, to set meeting agendas and to determine materials to be distributed to the board of directors. Accordingly, the Chairman has substantial ability to shape the work of the board of directors. As a general policy, the board of directors recognizesbelieves that it is important to determine an optimal board leadership structure to ensure the independent oversight of management as the company continues to grow. We separate the roles of chief executive officer and chairmanseparation of the board in recognitionpositions of Chairman and Chief Executive Officer reinforces the differences between the two roles. The chief executive officer is responsible for setting the strategic direction for the company and the day-to-day leadership and performance of the company, while the chairmanindependence of the board of directors provides guidance tofrom management, creates an environment that encourages objective oversight of management’s performance and enhances the chief executive officer and presides over meetingseffectiveness of the fullboard of directors as a whole. As such, Mr. Pascoe serves as our Chief Executive Officer, while Dr. Crean serves as our Chairman of our board of directors. We believe that this separationexpect and intend the positions of responsibilities provides a balanced approach to managingChairman of the board of directors and overseeingChief Executive Officer to continue to be held by separate individuals in the company.future.

OurRole of the Board of Directors in Risk Oversight

One of the principal functions of our board of directors is to provide oversight concerning the assessment and management of risk related to our business. The board of directors is involved in risk oversight through direct decision-making authority with respect to fundamental financial and business strategies and major corporate activities.

While the board of directors oversees our risk management, our management is responsible for day-to-day risk management processes, including, without limitation, strategic, operational, financial, regulatory and cyber-security risks that may exist from time to time. The board of directors expects management to consider the risks of, and risk management in, each business decision, to proactively develop and monitor risk management strategies and processes for day-to-day activities and to effectively implement risk management strategies adopted by the board of directors and its committees. In connection with this responsibility, members of management provide regular reports to the board of directors regarding business operations and strategic planning, financial planning and budgeting and regulatory matters, including any material risk to our company related to such matters. Although the board of directors does not have a formal risk oversight policy, the board of directors does, as a whole and through its various committees, oversee the proper functioning of our internal risk management processes. In its risk oversight role, the board of directors evaluates whether management has reasonable controls in place to address material risks we currently face and those we may face in the future.

The board of directors has concludeddelegated oversight for specific areas of risk exposure to committees of the board of directors as follows:

The Audit Committee is primarily responsible for overseeing our financial risk management processes on behalf of the board of directors. The Audit Committee is responsible for discussing our overall risk assessment and risk management policies with management and our independent registered public accounting firm, as well as our plans to monitor and control any financial risk exposure. The Audit Committee is also responsible for primary risk oversight related to our internal control over financial reporting, disclosure controls and procedures, and legal and regulatory compliance. In addition, the Audit Committee reviews all related-person transactions, including the risks related to those transactions impacting our company. Going forward, we expect that the Audit Committee will receive reports from management regarding its assessment of risks at least quarterly.

The Compensation Committee oversees our current leadershipcompensation programs and reviews the conduct incentivized by those programs, including any impact on risk-taking by our executive officers and employees.

The Nominating and Corporate Governance Committee oversees the organization, membership and structure is appropriate at this time. However,of our board of directors will continueand our corporate governance practices. The committee members report to periodically review our leadership structure and may make such changes in the future as it deems appropriate.

Role of Board in Risk Oversight Process

Ourfull board of directors has responsibilityon material developments in their areas of oversight.

We believe this division of responsibilities is the most effective approach for addressing the risks we face and that our board of directors’ leadership structure, which also emphasizes the independence of our board of directors in its oversight of the company’s risk management processes and, either as a whole or through its committees, regularly discusses with management our major risk exposures, their potential impact on our business and affairs, supports this approach.

The board of directors and its committees meet at regularly scheduled and special meetings throughout the stepsyear at which management reports to the board concerning the results of our risk management activities, as well as external changes that may change the levels of business risk to which we takeare exposed. At each regular meeting of our board of directors, the chairperson of each committee reports to manage them. Thethe full board regarding the matters reported and discussed at any committee meetings, including any matters related to risk oversight process includes receiving regular reports from boardassessment or risk management. Upon the request of the committees, our principal executive officer and principal financial officer attend meetings of these committees when they are not in executive session, and often report on matters that may not be otherwise addressed at these meetings. In addition, our directors are encouraged to communicate directly with members of senior management regarding matters of interest, including matters related to enable our boardrisk, at times when meetings are not being held.

Committees of the Board of Directors

Our Board currently has three standing committees: Audit Committee, a Compensation Committee, and a Nominating and Corporate Governance Committee. We believe that the composition of these committees meets the criteria for independence under, and the functioning of these committees comply with the requirements of, the Sarbanes-Oxley Act of 2002, the rules of Nasdaq, and SEC rules and regulations. We intend to understandcomply with the company’s risk identification, risk management and risk mitigation strategiesrequirements of Nasdaq with respect to areascommittee composition of potential material risk, including operations, finance, legal, regulatory, strategic and reputational risk.

The auditindependent directors. Each committee reviews information regarding liquidity and operations, and oversees our management of financial risks. Periodically, the audit committee reviews our policies with respect to risk assessment, risk management, loss prevention and regulatory compliance. Oversight by the audit committee includes direct communication with our external auditors, and discussions with management regarding significant risk exposures and the actions management has taken to limit, monitor or control such exposures. The compensation committee is responsible for assessing whether any of our compensation policies or programs has the potential to encourage excessive risk-taking. The nominating/corporate governance committee manages risks associated with the independence of the board, corporate disclosure practices,composition and potential conflicts of interest. While each committee is responsible for evaluating certain risks and overseeing the management of such risks, the entire board is regularly informed through committee reports about such risks. Matters of significant strategic risk are considered by our board as a whole.responsibilities described below.

Board Committees and Independence

Our board has established three standing committees—audit, compensation and nominating and corporate governance—each of which operates under a charter that has been approved by our board.

Our board has determined that all of the members of each of the board’s three standing committees are independent as defined under the rules of The NASDAQ Global Market. In addition, all members of the audit committee meet the independence requirements contemplated by Rule 10A-3 under the Securities Exchange Act of 1934, or the Exchange Act.

Audit Committee

TheDavid Crean, Ph.D., Daniel Kisner, M.D., and Brian Satz, each of whom is a non-employee member of our Board, currently comprise our Audit Committee. Dr. Crean serves as the chair of our audit committee’s main function is to overseecommittee. Our Board has determined that each of the members of our accountingaudit committee satisfies the requirements for independence and financial reporting processes, internal systemsliteracy under the rules and regulations of control, independent registered public accounting firm relationshipsNasdaq and the auditsSEC. Our Board has also determined that Dr. Crean qualifies as an “audit committee financial expert,” as defined in the SEC rules, and satisfies the financial sophistication requirements of our financial statements. This committee’sNasdaq.

The responsibilities of the Audit Committee include, among other things:but are not limited to, the following:

 

selectingappointing and engagingretaining our independent registered public accounting firm;

evaluating the qualifications, independence and performance of our independent registered public accounting firm;

approving the audit and non-audit services to be performed by our independent registered public accounting firm;

reviewing the design, implementation, adequacy and effectiveness of our internal accounting controls and our critical accounting policies;

discussing with management and the independent registered public accounting firm the results of our annual audit and the review of our quarterly unaudited financial statements;

reviewing with management and our independent registered public accounting firm the annual and quarterly reports be to filed with the SEC;

reviewing, overseeing and monitoring the integrity of our financial statements and ourits compliance with legal and regulatory requirements as they relate to financial statements or accounting matters;

reviewing on a periodic basis, or as appropriate, any investment policy and recommending to our Board any changes to such investment policy;

reviewing with management and our auditorsindependent registered public accounting firm any earnings announcements and other public announcements regarding our results of operations;

preparing the report that the SEC requiresrules require be included in our annual proxy statement;

reviewing and approving any related party transactions and reviewing and monitoring compliance with our code of conduct and ethics; and

reviewing and evaluating, at least annually, the performance of the audit committeeAudit Committee and its members including compliance of the audit committee with its charter.

The members ofBoth our audit committee are Dr. Malikexternal auditor and Messrs. Klingensteininternal financial personnel meet privately with the Audit Committee and Lacasse. Dr. Malik serves as the chairperson of thehave unrestricted access to this committee. All members of our audit committee meet the requirements for financial literacy under the applicable rules and regulations of the SEC and The NASDAQ Global Market. Our board of directors has determined that Dr. Malik is an “audit committee financial expert” as defined by applicable SEC rules and has the requisite financial sophistication as defined under the applicable NASDAQ rules and regulations. Our board of directors has determined each of Dr. Malik and Messrs. Klingenstein and Lacasse is independent under the applicable rules of the SEC and The NASDAQ Global Market. Upon the listing of our common stock on The NASDAQ Global Market, the audit committee will operate under a written charter that satisfies the applicable standards of the SEC and The NASDAQ Global Market.

Compensation Committee

Brian Satz, David Crean, Ph.D., Jonathan Jackson, and Daniel Kisner, M.D., each of whom is a non-employee member of our Board, comprise our compensation committee. Mr. Satz serves as the chair of our compensation committee. Our Board has determined that each member of our compensation committee meets the requirements for independence under the rules of Nasdaq and the SEC. Each member of the compensation committee is also a non-employee director, as defined pursuant to Rule 16b-3 promulgated under the Exchange Act, and an outside director, as defined pursuant to Section 162(m) of the Internal Revenue Code.

Our Compensation Committee reviews and recommendsapproves policies relating to compensation and benefits of our officers and employees. The compensation committee reviews and recommendsemployees, corporate goals and objectives relevant to the compensation of our Chief Executive Officer and other executive officers, evaluates the performance of these officers in light of those goals and objectives and recommends to our board of directorsapproves the compensation of these officers based on such evaluations. The compensation committeeCompensation Committee also recommends to our board of directorsreviews and approves the issuance of stock options and other awards under our equity plan.plans. The compensation committee will reviewCompensation Committee reviews and evaluate,evaluates, at least annually, theits performance, of the compensation committee and its members, including compliance by the compensation committeeCompensation Committee with its charter.

The members of our compensation committee are Messrs. Hale and Scopa. Mr. Hale serves as the chairperson of the committee. Our board has determined that each of Messrs. Hale and Scopa is independent under the applicable rules and regulations of The NASDAQ Global Market, is a “non-employee director” as defined in Rule 16b-3 promulgated under the Exchange Act and is an “outside director” as that term is defined in Section 162(m) of the U.S. Internal Revenue Code of 1986, as amended. Upon the listing of our common stock on The NASDAQ Global Market, the compensation committee will operate under a written charter, which the compensation committee will review and evaluate at least annually.

Nominating and Corporate Governance Committee

TheBrian Satz, Jonathan Jackson, and Yizhuo Zhang, each of whom is a non-employee member of our Board, comprise our nominating and corporate governance committee. Mr. Satz serves as the chair of our nominating and corporate governance committee. Our Board has determined that each member of our nominating and corporate governance committee meets the requirements for independence under the rules of Nasdaq and the SEC.

Our Nominating and Corporate Governance Committee is responsible for making recommendationsassisting the our Board in discharging its responsibilities regarding the identification of qualified candidates to become board members, the selection of nominees for election as directors at our boardannual meetings of stockholders (or special meetings of stockholders at which directors regarding candidates for directorshipsare to be elected), and the sizeselection of candidates to fill any vacancies on the our Board and composition of our board of directors.any committees thereof. In addition, the nominatingour Nominating and corporate governance committeeCorporate Governance Committee is responsible for overseeing our corporate governance policies, and reporting, and making recommendations to our board of directorsBoard concerning governance matters. The membersmatters and oversight of the evaluation of our nominating and corporate governance committee are Dr. Van Wart and Messrs. Hale and Perret. Dr. Van Wart serves as the chairman of the committee. Our board has determined that each of Messrs. Hale and Perret and Dr. Van Wart is independent under the applicable rules and regulations of The NASDAQ Global Market relating to nominating and corporate governance committee independence. Upon the listing of our common stock on The NASDAQ Global Market, the nominating and corporate governance committee will operate under a written charter, which the nominating and corporate governance committee will review and evaluate at least annually.

Compensation Committee Interlocks and Insider Participation

None of the members of our compensation committee has ever been one of our officers or employees. None of our executive officers currently serves, or has served, as a member of the board of directors or compensation committee of any entity that has one or more executive officers serving as a member of our board of directors or compensation committee.

Board Diversity

Upon consummation of this offering, our nominating and corporate governance committee will be responsible for reviewing with the board of directors, on an annual basis, the appropriate characteristics, skills and experience required for the board of directors as a whole and its individual members. In evaluating the suitability of individual candidates (both new candidates and current members), the nominating and corporate governance committee, in recommending candidates for election, and the board of directors, in approving (and, in the case of vacancies, appointing) such candidates, will take into account many factors, including the following:

personal and professional integrity, ethics and values;

experience in corporate management, such as serving as an officer or former officer of a publicly-held company;

development or commercialization experience in large pharmaceutical companies;

experience as a board member or executive officer of another publicly-held company;

strong finance experience;

diversity of expertise and experience in substantive matters pertaining to our business relative to other board members;

diversity of background and perspective, including with respect to age, gender, race, place of residence and specialized experience;

conflicts of interest; and

practical and mature business judgment.

Currently, our board of directors evaluates, and following the consummation of this offering will evaluate, each individual in the context of the board of directors as a whole, with the objective of assembling a group that can best maximize the success of the business and represent stockholder interests through the exercise of sound judgment using its diversity of experience in these various areas.Board.

Code of Business Conduct and Ethics

We have adopted a written code of business conduct and ethics that applies to ourfor directors, officers and employees, including(including our principal executive officer, principal financial officer and principal accounting officer or controller, or persons performing similar functions. Upon completionofficer) and employees, known as the Code of this offering, our codeBusiness Conduct and Ethics. The Code of business conductBusiness Conduct and ethics will beEthics is available under the heading “Corporate Governance Overview” of the Investor Relations—Corporate GovernanceRelations section of our website at www.conatuspharma.com. In addition, we intend to post on our website all disclosures that are required by law or the listing standards of The NASDAQ Global Market concerning any amendmentshttps://investors.histogen.com/. Any amendment to, or waiverswaiver from, anya provision of the code. The referencecodes of ethics applicable to our website address does not constitute incorporation by referencedirectors and executive officers will be disclosed in a current report on Form 8-K within four business days following the date of the information contained atamendment or available throughwaiver, unless the rules of Nasdaq Capital Market then permit website posting of such amendments and waivers, in which case we would promptly post such disclosures on our website, and you should not consider it to be a part of this prospectus.internet website.

EXECUTIVE AND DIRECTOR COMPENSATION

This section discussesSet forth below is certain information regarding the material components of the executive compensation program for our executive officers who are named in the “2012 Summary Compensation Table” below. In 2012, our chief executive officer and our two other highest-paid executive officers, or our named executive officers, were as follows:

Steven J. Mento, Ph.D., President and Chief Executive Officer

Alfred P. Spada, Ph.D., Senior Vice President, R&D and Chief Scientific Officer

Gary C. Burgess, M.B., Ch.B. M.Med., Senior Vice President, Clinical Research, and Chief Medical Officer

This discussion may contain forward-looking statements that are based on our current plans, considerations, expectations and determinations regarding future compensation programs. Actual compensation programs that we adopt following the completion of this offering may differ materially from the currently planned programs summarized in this discussion.

2012 Summary Compensation Table

The following table sets forth information concerning thehistorical compensation of our named executive officers during the fiscal year ended December 31, 2012:2019. The named executive officers for the year ended December 31, 2019 consisted of the principal executive officer and our two most highly compensated executive officers other than our principal executive officer of Private Histogen who were serving as executive officers as of December 31, 2019 (our “named executive officers”).

Summary Compensation Table

The following table shows information regarding the compensation of the named executive officers during the fiscal years ended December 31, 2019 and 2018.

 

Name and Principal Position

 Year  Salary
($)
  Bonus
($)
  Stock
Awards
($)
  Option
Awards
($)(1)
  Non-Equity
Incentive Plan
Compensation
($)
  All Other
Compensation
($)
  Total
($)
 

Steven J. Mento, Ph.D.

  2012    407,255            2,480        15,754(2)   425,489  

President and Chief Executive Officer

        

Gary C. Burgess, M.B., Ch.B. M.Med.

  2012    280,000            1,550        49,212(3)   330,762  

Senior Vice President, Clinical Research, and Chief Medical Officer

        

Alfred P. Spada, Ph.D.

  2012    274,866            930        16,311(2)   292,107  

Senior Vice President, R&D and Chief Scientific Officer

        

Name and Principal Position

 Year  Bonus  Salary  Stock
Awards(5)
  Option
Awards(6)
  Nonqualified
Deferred
Compensation
Earnings
  All Other
Compensation
  Total 

Richard W. Pascoe,

President, Chief Executive Officer & Director(1)

  2019   —    $422,884   —    $1,657,632   —    $120  $2,080,636 
  2018   —     —     —     —     —     —     —   
        

Stephen Chang, Ph.D.,

Interim Chief Executive Officer & Director(2)

  2019   —    $6,182   —     —     —     —    $6,182 
  2018   —    $100,000   —     —     —     —    $100,000 
        

Gail K. Naughton, Ph.D.,

Founder, Chief Scientific Officer and Chief Business Development Officer(3)

  2019   —    $285,000   —     —     —    $120  $285,120 
  2018   —    $285,000   —     —    $3,268   —    $288,268 
        
        

Martin Latterich, Ph.D.,

Vice President, Technical Operations(4)

  2019   —    $212,708   —     —     —    $120  $212,828 
  2018   —    $170,229   —    $33,600   —    $2,500  $206,329 
        

 

(1)

Amounts shown representMr. Pascoe joined Private Histogen effective January 24, 2019. In 2019, all other compensation includes $120 in life insurance premiums. Mr. Pascoe was appointed our President, Chief Executive Officer and a member of our Board of Directors in connection with the Merger.

(2)

In April 2017, when Dr. Naughton resigned as Chief Executive Officer of Private Histogen and transitioned to another role with the company, the Board appointed Dr. Chang as Interim Chief Executive Officer. Dr. Chang served as Histogen’s Interim Chief Executive Officer until Mr. Pascoe’s appointment on January 24, 2019. Dr. Chang was never hired as an employee, but served in his role in a consulting capacity. In 2019, all of compensation includes $6,182 in consulting fees that he received as Interim CEO. In 2018, all of compensation includes $100,000 in consulting fees that he received as Interim CEO.

(3)

Dr. Naughton is the founder and served as the Chief Executive Officer and Board Chairwoman of Private Histogen from its inception until her resignation from both positions in April 2017. At her resignation date, she transitioned to the title of Founder and Chief Scientific Officer and later in 2017, added another title of Chief Business Development Officer to her roles. Dr. Naughton was appointed our Chief Scientific Officer and Chief Business Development in connection with the Merger. In 2019, all other compensation includes $120 in life insurance premiums. For 2018, nonqualified deferred compensation earnings includes above-market interest on amounts of Dr. Naughton’s deferred salary. Dr. Naughton was entitled to earn 5% interest on such deferred salary. The entire deferred salary was paid out to Dr. Naughton in 2018.

(4)

Dr. Latterich joined Private Histogen effective October 7, 2016, and was appointed our Vice President, Technical Operations in connection with the Merger. In 2018, all other compensation includes $2,500 for Histogen’s matching and profit sharing contributions to the 401(k) plan. In 2019, all other compensation includes $120 in life insurance premiums.

(5)

Represents the aggregate grant date fair value of the stock awards granted during the relevant fiscal year computed in accordance with FASB ASC Topic 718. The assumptions used in the valuation of these awards are consistent with the valuation methodologies specified in Note 3 to Histogen’s financial statements included in this proxy statement/prospectus/information statement.

(6)

Represents the aggregate grant date fair value of the option awards granted during the relevant fiscal year computed in accordance with FASB Topic ASC 718. The assumptions used in the valuation of these awards are consistent with the valuation methodologies specified in Note 3 to Histogen’s financial statements included in this proxy statement/prospectus/information statement. These amounts do not correspond to the actual value that will be recognized by the named executive

footnotes continued on following page

officer with respect to such awards. For a detailed description of the assumptions used for purposes of determiningThe full grant date fair value see Note 2of such performance-based stock options, assuming full achievement of the performance conditions to which such stock options are subject, is $663,053 for Mr. Pascoe. Pursuant to Mr. Pascoe’s award agreement (as it was amended on January 28, 2020), 10% of the Histogen options granted to him in connection with his commencement of employment with Histogen, representing the option to acquire approximately 338,292 shares of Histogen common stock, will become fully vested upon the closing of the Merger. An additional 10% of such options will vest upon the date that the market capitalization of the combined company exceeds each of $200,000,000, $275,000,000, and $300,000,000. Collectively, these options represent 40% of Mr. Pascoe’s new hire options. The remaining 60% of Mr. Pascoe’s new hire options will continue to vest at the rate of 1/48th of those options (or approximately 6,064 shares of Histogen common stock on an adjusted basis, having been converted into shares of Conatus’ common stock at an exchange rate of approximately 0.14342 shares of common stock after taking into account a one-for-ten reverse stock split by Conatus) per month, according to the consolidated financial statements included elsewheretime schedule set forth in this prospectus.

(2)

Amounts shown represent term life insurance, short and long-term disability insurance, long-term care insurance and matching contributions underhis original award agreement. In addition to the terms of our 401(k) plan paidforegoing, if Mr. Pascoe’s employment is terminated by us on behalfHistogen without cause or he resigns for good reason, an additional portion of such named executive officers.

(3)

Represents Dr. Burgess’ monthly stipendnew hire options will vest equal to the number of £2,523 pounds sterling, or approximately $4,101 U.S. dollars, to purchase individually-obtained insurance and pension benefitssuch options which would have vested in fiscal year 2012. The amount shown representsthe 12 months following the date of such compensation, converted from pounds sterling to U.S. dollars, using the exchange rate in effect on December 31, 2012.

termination.

Narrative Disclosure to Summary Compensation TablesTable

Employment Agreements

Employment Agreements with Drs. Mento and Spada

In December 2008, wePrivate Histogen entered into employment agreements with eachcertain of Drs. Mentoits named executive officers. These agreements set forth the individual’s base salary, annual incentive opportunities, equity compensation and Spada.other employee benefits, which are described in this Histogen Executive Compensation section. All employment agreements provided for “at-will” employment, meaning that either party could terminate the employment relationship at any time, although those agreements provided that those Named Executive Officers would be eligible for severance benefits in certain circumstances following a termination of employment without cause or resignation for good reason. Private Histogen’s Compensation Committee approved the severance benefits to mitigate certain risks associated with working in a biopharmaceutical company at Private Histogen’s current stage of development and to help attract and retain qualified executives.

PursuantConsulting Arrangements

Private Histogen entered into consulting arrangements with certain of its Board members, including Dr. Chang, for the purpose of providing Private Histogen with important input and oversight on various business matters. Specifically, Private Histogen’s consulting arrangement with Dr. Chang, whereby he received $100,000 annually in exchange for his service as Interim Chief Executive Officer from April 2017 to eachJanuary 2019, was approved by Histogen’s Board of Directors.

Executive Compensation Elements

The following describes the material terms of the employment agreements, Drs. Mento and Spada currently receiveelements of Private Histogen’s executive compensation program during 2019.

Base Salaries

The annual base salaries of $419,473or base compensation, as applicable, for Private Histogen’s named executive officers for 2019 changed from the base salaries in effect for 2018 as set forth in the Summary Compensation Table above, specifically, Mr. Latterich received an increase in salary upon signing his employment agreement in April 2019. The 2019 annual base salaries or base compensation, as applicable, for Mr. Pascoe, Dr. Naughton and $283,112, respectively, which amountsDr. Latterich are subject toset forth in the Summary Compensation Table above, and Dr. Chang did not join Histogen as an employee, but rather served as a consultant.

Annual Cash Incentive

We may also provide executive officers with annual review by and atperformance-based cash bonuses, in the Board’s sole discretion,

which are specifically designed to reward executives for overall performance of our board of directors or its designee. Drs. Mento and Spada will also be eligible to earn anHistogen in a given year. The target annual cash performance bonus equalamounts relative to up to 40%base salary vary

depending on each executive’s accountability, scope of responsibilities and 30%, respectively, of his then-current annual base salary.potential impact on Histogen’s performance. The annual cash performance bonus will be based on his and/or our attainment of objective financial or other operating criteria established by our board of directors or its designee, as determined by our board of directors or its designee.

Pursuant to each of the employment agreements, if we terminate suchfollowing executive officer’s employment without cause (as defined below) or such officer resigns for good reason (as defined below), the executive officer will beofficers were entitled to the following paymentstarget performance-based cash bonuses: Mr. Pascoe, 50% of base salary; and benefits: (1) his fully earned but unpaidMr. Latterich, 30% of base salary throughsalary.

The Compensation Committee considers our overall performance for the datepreceding fiscal year in deciding whether to award a bonus and, if one is to be awarded, the amount of termination at the rate thenbonus. The Compensation Committee retains the ability to apply discretion in effect, plus all other amounts under any compensation plan or practice to which he is entitled; (2) a lump sum cash payment in an amount equal to his monthly base salary as in effect immediately priormaking adjustments to the date of termination forfinal bonus payouts. No annual cash bonuses were paid with respect to 2018 or 2019.

The Compensation Committee considers equity incentives to be important in aligning the 12-month period following the date of termination; and (3) continuation of health benefits for a period of 12 months following the date of termination.

Each of the employment agreements provides that the executive officer’s stock awards will immediately vest and become exercisable: (1) as to 100% of such awards on the date of a change of control; and (2) in the event the executive officer’s employment is terminated by us other than for cause or by the executive officer for good reason, as to the number of stock awards that would have vested over the 12-month period following termination had such executive officer remained continuously employed by us during such period.

For purposes of the employment agreements, “cause” generally means an executive officer’s: (1) commission of an act of fraud, embezzlement or dishonesty that has a material adverse impact on us or any successor or affiliate of ours; (2) conviction of, or entry into a plea of “guilty” or “no contest” to, a felony or any crime involving fraud, misappropriation, embezzlement or moral turpitude; (3) unauthorized use or disclosureinterests of our confidential information or trade secrets or thatexecutive officers with those of any successor or affiliate of ours that has a material adverse impact on any such entity; (4) gross negligence, insubordination or material violation of any duty of loyalty, or any other material misconduct on theits stockholders. As part of our pay-for-performance philosophy, its compensation program tends to emphasize the long-term equity award component of total compensation packages paid to our executive officer; (5) ongoing and repeated failure or refusal to perform or neglect of his duties as required by his employment agreement, which failure, refusal or neglect continues for 15 days following his receipt of written notice from our board of directors, or, in the case of Dr. Spada, from our chief executive officer, stating with specificity the nature of such failure, refusal or neglect; or (6) breach of any material provision of his employment agreement.officers.

For purposes of the employment agreements, “good reason” generally means: (1) a material diminution in the executive officer’s authority, duties or responsibilities; (2) a material diminution in the executive officer’s base compensation, except in connection with a general reduction in the base compensation of our or any successor’s or affiliate’s personnel with similar status and responsibilities; (3) a material change in the geographic location at which the executive officer must perform his duties (and we and the executive officer agree that any requirement that the executive officer be based at any place outside a 50-mile radius of his place of employment as of the effective date of the employment agreement, except for reasonably required travel on our or any successor’s or affiliate’s business thatBecause vesting is not materially greater than such travel requirements prior to the effective date of the employment agreement, shall be considered a material change); or (4) any other action or inaction that constitutes a material breach by us or any successor or affiliate of its obligations to the executive officer under the employment agreement.

For purposes of the employment agreements, “change in control” generally has the same meaning as such term is given under the terms of our 2006 Equity Incentive Plan, as described below.

Employment Agreement with Dr. Burgess

In November 2011, we entered into an employment agreement with Dr. Burgess, or the Burgess employment agreement.

Pursuant to the Burgess employment agreement, Dr. Burgess receives an annual base salary of $280,000, which amount is subject to annual review by and at the sole discretion of our board of directors or its designee. Dr. Burgess will also be eligible to earn an annual cash performance bonus equal to up to 30% of his then-current annual base salary. The annual cash performance bonus will be based on his and/orcontinued employment, our attainmentequity-based incentives also encourage the retention of objective financial or other

operating criteria established by our board of directors or its designee, as determined by our board of directors or its designee. In addition to his base salary and annual bonus, for so long as we do not maintain any company-paid health or pension scheme in the United Kingdom, as more fully described in the employment agreement, and Dr. Burgess resides in the United Kingdom, we will pay Dr. Burgess a monthly stipend to purchase individually-obtained insurance and pension benefits.

Pursuant to the terms of the Burgess employment agreement, either we or Dr. Burgess may terminate Dr. Burgess’ employment with us at any time with no less than 30 days’ prior written notice, or such longer period of notice as is required by law, and we may terminate Dr. Burgess’ employment with us immediately upon notice if such termination is for cause, or if we pay Dr. Burgess, in lieu of notice, an amount equal to the base salary that he would otherwise have received during the notice period. In addition, if we terminate Dr. Burgess’ employment without cause (as defined below) or if he resigns for good reason (as defined below), Dr. Burgess is entitled to the following payments and benefits: (1) his fully earned but unpaid base salary through the date of termination at the rate then in effect, plus all other amounts under any compensation plan or practice to which he is entitled; (2) a lump sum cash payment in an amount equal to his monthly base salary as in effect immediately prior to the date of termination for the 12-month period following the date of termination; and (3) an amount equal to the monthly plan premium payments for Dr. Burgess’ health plans in equal monthly payments for a period of 12 months following the date of termination.

For purposes of the Burgess employment agreement, “cause” generally means Dr. Burgess’: (1) commission of an act of fraud, embezzlement or dishonesty that has a material adverse impact on us or any successor or affiliate of ours; (2) conviction of, or entry into a plea of “guilty” or “no contest” to, a felony or any crime involving fraud, misappropriation, embezzlement or moral turpitude; (3) unauthorized use or disclosure of our confidential information or trade secrets or any successor or affiliate of ours that has a material adverse impact on any such entity; (4) gross negligence, gross misconduct (as defined below), insubordination or material violation of any duty of loyalty, or any other material misconduct on the part of Dr. Burgess; (5) ongoing and repeated failure or refusal to perform or neglect of his duties as required by his employment agreement, which failure, refusal or neglect continues for 15 days following his receipt of written notice from our board of directors or our chief executive officer, stating with specificity the nature of such failure, refusal or neglect; or (6) breach of any material provision of his employment agreement.

For purposes of the Burgess employment agreement, “good reason” generally means: (1) a material diminution in the executive officer’s authority, duties or responsibilities; (2) a material diminution in the executive officer’s base compensation, except in connection with a general reduction in the base compensation of our or any successor’s or affiliate’s personnel with similar status and responsibilities, provided that in the event of Dr. Burgess’ relocation to the United States, the expiration of benefits related to holidays, illness and expenses, as more fully described in the Burgess employment agreement, shall not constitute good reason; and (3) any other action or inaction that constitutes a material breach by us or any successor or affiliate of its obligations to Dr. Burgess under the employment agreement.

For purposes of the Burgess employment agreement, “gross misconduct” generally means: (1) an act which constitutes unlawful discrimination or harassment, whether on the grounds of sex, sexual orientation, race, ethnic origin, nationality, disability, age, religion or beliefs; (2) knowingly providing us false information or documentation; (3) being under the influence of, or consuming, illegal drugs or any controlled substances during work hours or while involved in our activities or events; (4) violent, abusive, intimidating or offensive behavior (whether physical or verbal); (5) unauthorized access to or inappropriate use of our computer, e-mail and internet systems or use of unapproved software; (6) interference with safety equipment; or (7) intentional or reckless disregard for health and safety rules or procedures.

For purposes of the Burgess employment agreement, “change in control” generally has the same meaning as such term is given under the terms of our 2006 Equity Incentive Plan, as described below.

Employee Incentive Compensation Plan

All of our employees, including our named executive officers are eligiblethrough the vesting period of the awards. In determining the size of the long-term equity incentives to participate in our Employee Incentive Compensation Plan, or the EICP. The EICP is designed as a mechanism for rewarding corporate and individual achievement by offering both short-term and long-term incentive compensationbe awarded to employees. The EICP is administered by the compensation committee of our board of directors, and our compensation committee is responsible for the approval of participation, award targets, performance measures and earned awards under the EICP.

Pursuant to the EICP, our compensation committee may make awards based on annual individual and corporate objectives determined for the performance measurement period. The relative weight between individual and corporate performance factors varies based on reporting levels and responsibility, and is currently as follows for our named executive officers, subjectit takes into account a number of internal factors, such as the relative job scope, the value of existing long-term incentive awards, individual performance history, prior contributions to Histogen and the size of prior grants.

Histogen uses stock options and stock awards to compensate its named executive officers both in the form of initial grants in connection with the commencement of employment and annual reviewrefresher grants. Because employees are able to profit from stock options only if our stock price increases relative to the stock option’s exercise price, we believe stock options in particular provide meaningful incentives to employees to achieve increases in the value of Histogen stock over time.

Annual grants of equity awards are typically approved by our compensation committee:

   Corporate  Individual 

President/CEO

   100  0

Senior Vice President

   80  20

Annual Cash Incentive Awardsthe Board and/or the Compensation Committee during the first quarter of each year, if applicable. While we intend that the majority of equity awards to its employees be made pursuant to initial grants or its annual grant program, the Compensation Committee retains discretion to grant equity awards to employees at other times, including in connection with the promotion of an employee, to reward an employee, for retention purposes or for other circumstances recommended by management or the Compensation Committee.

The EICP allows for annual cash incentiveexercise price of each stock option grant is the fair market value of Histogen’s common stock on the grant date. Time-based stock option awards which are determined by (1) applying a target award multiplier, as set forth below,granted to each covered employee’s base salary; (2) allocating such amount between the corporate and individual components, as set forth above; and (3) multiplying each such allocated amount by an award multiplier ranging from 0% to 150%, as determined by our compensation committee based on corporate and individual achievement for the applicable year.

The target award multipliers for our named executive officers are as follows:

Target Award
Multiplier

CEO

40

Senior Vice President

30

Corporate objectives for the EICP for 2012 were established in December 2011, and generally related to clinical development, business development and operational goals. In December 2012, our board of directors determined, in consultation with our compensation committee, to approve annual cash incentive awards for 2012 for certain of our employees at 100% of targeted levels.

However, the annual cash incentive award payments under our EICP are within the discretion of our compensation committee. After taking into consideration the cash position of the company at the end of 2012, the compensation committee exercised such discretion and determined not to award annual cash incentive awards for 2012 to Drs. Mento, Spada and Burgess at that time. Instead, the compensation committee determined to create a retention program pursuant to which Drs. Mento, Spada and Burgess would be eligible to earn cash awards in the amount of $162,902, $82,460 and $84,000, respectively (which amounts equated to the annual cash incentive awards these individuals would have received under the EICP for 2012 had the compensation committee not exercised its discretion to determine not to pay such executives annual cash incentive awards thereunder), upon the receipt of acceptable non-dilutive financing by the company as determined by our board of directors, and each executive officer must continue to be employed by us on the date of payment of such award in order to remain eligible to receive it. To date, the company has not received acceptable non-dilutive financing that would give rise to the payment of these amounts to the named executive officers and the consummation of this offering will not satisfy this performance objective.

Long Term Incentive Awards

In addition, pursuant to the EICP, our compensation committee may grant annual stock option awards to our employees, including our named executive officers, under our 2006 Equity Incentive Plan. Such options will generally vest over a four-year period. The target number of shares to be subject to such annual stock option awards for our named executive officers are set forth below:

Target
Number of
Shares of
Annual Stock
Option Awards

CEO

300,000

Senior Vice President

100,000

The EICP provides for annual stock option awards to be determined by (1) allocating the target amount set forth above between the corporate and individual components for an individual,period as set forth above; and (2) multiplying each such allocated amount by an award multiplier ranging from 0% to 150%, as determined by the compensation committee. Our compensation committee has broad discretion in the grant of such stock option awards, and the amount of such grants, based on the performance of the individual and the company at the time of grant. In December 2012, our compensation committee determined to award stock option awards to Drs. Mento, Spada and Burgess to purchase 400,000, 150,000 and 250,000 shares of our common stock, respectively, based on their superior performance during 2012. These award amounts represented 133%, 150% and 250% of their target annual award amounts under the EICP. The stock options were granted with an exercise price of $0.01 per share and vest over four years, as described below.

In the event of a change in control (as defined in the 2006 Equity Incentive Plan), and if the EICP is assumed by the acquiring company stock option awards for the year in which the change in control occurs will be the greater of the target award or the actual award determined by the compensation committee in its sole discretion. In addition, all unvested stock options previously granted under the EICP will be subject to 50% accelerated vesting immediately upon a change in control. The remaining unvested stock options will vest upon the earlier of (1) the date which is twelve months following the effective date of the change in control, or (2) the date immediately prior to the date on which an employee incurs either an involuntary termination without cause or a constructive termination, if and only if, the covered employee incurs the constructive termination or involuntary termination without cause at any time after the change in control, but prior to the date which is 12 months following the effective date of the change in control.

Equity Compensation

We offer stock options to our employees, including our named executive officers, as the long-term incentive component of our compensation program. We typically grant equity awards to new hires upon their commencing employment with us. Our stock options allow employees to purchase shares of our common stock at a price per share equal to the fair market value of our common stock on the date of grant and may or may not be intended to qualify as “incentive stock options” for U.S. federal income tax purposes. In the past, our board of directors has determined the fair market value of our common stock based upon inputs including valuation reports prepared by third-party valuation firms from time to time. Generally, the stock options we grant vest as tofollows: 25% of the total number ofshares underlying the option sharesvest on the first anniversary of the date of grantthe vesting commencement date and the remainder of the shares underlying the option vest in equal monthly installments over the ensuingremaining 36 months subjectthereafter. From time to time, the employee’s continued employmentCompensation Committee may, however, determine that a different vesting schedule is appropriate. We do not have any stock ownership requirements for its named executive officers.

The initial stock option grant to Mr. Pascoe in connection with us onhis hiring in January 2019 at Private Histogen is set forth in the vesting date. We also generally offer our employeesSummary Compensation Table above, as well as the opportunitystock grants awarded in 2019 for performance in 2018 and in 2018 for performance in 2017 with respect to “early exercise” their unvestedDr. Latterich. Mr. Pascoe’s stock options by purchasing shares underlying the unvested portion of an option subject to our right to repurchase any unvested shares for the lesser of the exercise price paid for the shares and the fair market value of the shares on the date of the holder’s termination of service if the employee’s service with us terminates prior to the date on which the options are fully vested.

Stock options granted to our named executive officers may bein 2019 were subject to accelerated vesting in certain circumstances. For additional discussion, please see “—Employment“Employment Agreements” above and “—Other Elements of Compensation—Change“Change in Control Benefits” below.

Employee Benefits Program

All of ourExecutive officers, including the named executive officers, received stock option awardsare eligible to participate in 2012. For additional discussion, please see “Employee Incentive Compensation Plan—Long Term Incentive Awards” above.

Prior to the effectiveness of this offering, we intend to adopt a 2013 Equity Incentive Award Plan, referred to below as the 2013 Plan, in order to facilitate the grant of cash and equity incentives to directors, employees (including our named executive officers) and consultantsall of our companyemployee benefit plans, including medical, dental, vision, group life, disability insurance, in each case

on the same basis as other employees, subject to applicable law. We provide Mr. Pascoe, Dr. Naughton and certain of its affiliatesDr. Latterich with term life insurance and disability insurance at our expense. We also provide vacation and other paid holidays to all employees, including executive officers. These benefit programs are designed to enable our company and certain of its affiliatesus to obtainattract and retain services of these individuals, which is essential to our long-term success. For additional information about the 2013 Plan, please see the section titled “Equity Incentive Award Plans” below.

Other Elements of Compensation

Retirement Plansworkforce in a competitive marketplace. Health, welfare and vacation benefits ensure that we have a productive and focused workforce through reliable and competitive health and other benefits.

We currently maintain a 401(k) retirement savings plan that allows eligible employees to defer a portion of their compensation, within limits prescribed by the Internal Revenue Code, on a pre-tax or after-tax basis through contributions to the plan. OurHistogen’s named executive officers are eligible to participate in the 401(k) plan on the same terms as other full-time employees generally. Currently, weHistogen has the ability to match contributions made by participants in the 401(k) plan up to a specified percentage, andmaximum of $2,500, but these matching contributions are fully vested asin the sole discretion of the date on which the contribution is made.Board and no matching contributions were provided in 2019. We believe that providing a vehicle for tax-deferred retirement savings thoughthrough our 401(k) plan and making fully vested matching contributions, adds to the overall desirability of our executive compensation package and further incentivizes ourHistogen’s employees, including ourHistogen’s named executive officers, in accordance with our compensation policies.

Employee Benefits and Perquisites

Our named executive officers are eligible to participate in our health and welfare plans to the same extent as all full-time employees generally. We also provide Drs. Mento and Spada with term life insurance, disability insurance and long-term care insurance at our expense. Dr. Burgess also receives a monthly stipend to cover his health insurance and pension contributions in lieu of our maintaining plans in the United Kingdom. We do not provide our named executive officers with any other perquisites or other personal benefits.

No Tax Gross-Ups

We do not make gross-up payments to cover our named executive officers’ personal income taxes that may pertain to any of the compensation paid or provided by our company.

Change in Control Benefits

OurWe entered into employment agreements with certain of the Named Executive Officers. These agreements set forth the individual’s base salary, annual incentive opportunities, equity compensation and other employee benefits, which are described in this Executive Compensation section. The two existing employment agreements provide for “at-will” employment, meaning that either party can terminate the employment relationship at any time, although the agreements provide that those Named Executive Officers would be eligible for severance benefits in certain circumstances following a termination of employment without cause.

Certain of Histogen’s named executive officers may become entitled to certain benefits or enhanced benefits in connection with a change in control of ourHistogen’s company. Drs. MentoThe employment agreement and Spada’s employmentaward agreement of Mr. Pascoe and the award agreements entitleof Dr. Latterich entitled them to accelerated vesting of all outstandingcertain equity awards immediately upon a change in control of our company. In addition, stock options granted to our employees, including our named executive officers, are subject to accelerationPrivate Histogen in connection with the Merger.

Our Compensation Committee approved the severance benefits to mitigate certain risks associated with working in a change in controlbiopharmaceutical company at our current stage of development and certain terminations of employment, as described above under “—Employee Incentive Compensation Plan— Long Term Incentive Awards.”to help attract and retain qualified executives.

Outstanding Equity Awards at 2012 Fiscal Year-EndDecember 31, 2019

The following table presents thesets forth specified information concerning outstanding equity incentive plan awards held byfor each of the named executive officerofficers outstanding as of December 31, 2012.2019 on an adjusted basis, having been converted into shares of Conatus’ common stock at an exchange rate of approximately 0.14342 shares of common stock after taking into account a one-for-ten reverse stock split by Conatus.

 

Option AwardsStock Awards

Name

Grant
Date
Number of
Securities
Underlying
Unexercised
Options
Exercisable
(#)
Number of
Securities
Underlying
Unexercised
Options
Unexercisable
(#)
Equity
Incentive Plan
Awards:
Number of
Securities
Underlying
Unexercised
Unearned
Options

(#)
Option
Exercise Price
($)
Option
Expiration
Date
Number of
Shares or Units
of Stock That
Have Not Vested
(#)
Market Value
of Shares or
Units of
Stock That
Have Not
Vested

($)(1)

Steven J. Mento, Ph.D.

3/3/08300,000(2)0.153/2/18
2/17/111,750,000(3)0.122/16/21
12/9/11157,500(4)
12/7/12400,000(4)

Gary C. Burgess, M.B., Ch.B. M.Med.

12/9/11546,875(5)
12/7/12250,000(4)

Alfred P. Spada, Ph.D.

3/3/08100,000(2)0.153/2/18
2/17/11350,000(3)0.122/16/21
12/9/1175,000(4)
12/7/12150,000(4)
   Option Awards 

Name

  Grant Date   Number of
Securities
Underlying
Unexercised
Options
Exercisable
(#)
   Number of
Securities
Underlying
Unexercised
Options
Non-
Exercisable
(#)
  Option
Exercise
Price
   Option
Expiration
Date
 

Richard W. Pascoe,

President, Chief Executive Officer & Director

   1/24/19    —      485,178(1)  $5.30    1/24/29 

Stephen Chang, Ph.D.,

Interim Chief Executive Officer & Director

   —      —      —     —      —   

Gail K. Naughton, Ph.D.,

Chief Science Officer

   5/12/12    380,063    —  (2)  $0.53    5/12/22 

Martin Latterich, Ph.D.,

Vice President, Technical Operations

   10/7/16    23,305    5,368(3)  $3.70    10/7/26 
   3/12/18    13,146    1,195(4)  $3.84    3/12/28 
         

 

(1)

Since we have not yet completed our initial public offering,Pursuant to Mr. Pascoe’s award agreement (as it was amended on January 28, 2020), 10% of the Histogen options granted to him in connection with his commencement of employment with Histogen, representing the option to acquire approximately 48,517 shares of Histogen common stock, will become fully vested upon the closing of the Merger. An additional 10% of such options will vest upon the date that the market values shown were computed using $             per share, which is the midpointcapitalization of the price rangecombined company exceeds each of $200,000,000, $275,000,000, and $300,000,000. Collectively, these options represent 40% of Mr. Pascoe’s new hire options. The remaining 60% of Mr. Pascoe’s new hire options will continue to vest at the rate of 1/48th of those options (or approximately 6,064 shares of Histogen common stock) per month, according to the time schedule set forth onin his original award agreement. In addition to the coverforegoing, if Mr. Pascoe’s employment is terminated by Histogen without cause or he resigns for good reason, an additional portion of this prospectus.such new hire options will vest equal to the number of such options which would have vested in the 12 months following the date of such termination.

(2)

TheThese options were exercisableare fully vested. One-fourth of the options vested one year after Dr. Naughton’s employment began, or August 2, 2012, and 1/48 of the total number of shares remaining subject to the option vest in full as36 equal monthly installments until the vesting ratio equals 1/1.

(3)

One-fourth of the options vested one year after the grant date and vested at the rate of 25%1/48 of the total number of shares subject to the option vest in 36 equal monthly installments until the vesting ratio equals 1/1.

(4)

One-fourth of the options vested immediately on the one year anniversary of December 7, 2007,April 10, 2017 and 1/48th48 of the total number of shares subject to the option onvest in 36 equal monthly installments until the last day of each month thereafter.vesting ratio equals 1/1.

Compensation of Directors

We compensate non-employee members of our board of directors for their service. Directors who are also employees do not receive cash or equity compensation for service on our board of directors in addition to compensation payable for their service as our employees. The non-employee members of our board of directors are also reimbursed for travel, lodging and other reasonable expenses incurred in attending board of directors or committee meetings.

Under our non-employee director compensation policy, we provide cash compensation in the form of an annual retainer of $40,000 for each non-employee director. In addition, the chair of the board of directors receives an additional annual retainer of $30,000. We also pay an additional annual retainer of $15,000 to the chair of our audit committee, $7,500 to other non-employee directors who serve on Conatus’ audit committee, $10,000 to the chair of our compensation committee, $6,000 to other non-employee directors who serve on our compensation committee, $7,000 to the chair of our nominating and corporate governance committee and $3,500 to other non-employee directors who serve on our nominating and corporate governance committee.

Also under our non-employee director compensation policy, any non-employee director who is first elected to the board of directors will be granted an option to purchase 30,000 shares of our common stock on the date of his or her initial election to the board of directors. Such options will have an exercise price per share equal to the fair market value of Conatus’ common stock on the date of grant. In addition, non-employee directors who (1) have been serving on the board of directors for at least six months as of the date of any annual meeting and (2) will continue to serve immediately following such meeting, will receive a grant of options to purchase 20,000 shares of our common stock, and a non-employee director serving as chair of the board of directors will receive a grant of options to purchase an additional 25,000 shares of Conatus’ common stock.

The initial options granted to non-employee directors described above will vest and become exercisable in substantially equal installments on each of the first three anniversaries of the date of grant, subject to the director’s continuing service on our board of directors on those dates. The annual options granted to non-employee directors described above will vest and/or become exercisable on the first anniversary of the date of grant, subject to the director’s continuing service on our board of directors (and, with respect to grants to a chairman of the board of directors or board committee, service as chairman of the board of directors or a committee) on those dates. All options will also vest in full upon the occurrence of a change in control.

Additionally, in October 2020, our board approved one-time grants of options to purchase 20,000 shares of our common stock to each of our non-employee directors. The grants are intended to compensate our non-employee directors for their service on our board for 2020 and into 2021 and to further align the interests of our non-employee directors with the interests of our stockholders to maximize stockholder value. The October 2020 option grants vest in full on the first anniversary of the date of grant, subject to the director’s continuing service on our board of directors on such date.

For the fiscal year ended December 31, 2018, Histogen did not have a director compensation policy in place. This policy did not change in 2019. Certain non-employee directors received equity grants described below prior to 2019, as well as reimbursement for travel, lodging and other reasonable expenses incurred in attending board of directors or committee meetings.

Private Histogen’s non-employee directors received no compensation during the year ended December 31, 2019. The following table provides outstanding options held by each of Histogen’s non-employee directors at December 31, 2019 on an adjusted basis, having been converted into shares of Conatus’ common stock at an exchange rate of approximately 0.14342 shares of common stock after taking into account a one-for-ten reverse stock split by Conatus:

(3)
Options Outstanding at
December 31, 2019

Stephen Chang, Ph.D.(1)

50,197

David H. Crean, Ph.D.(2)

57,368

Jonathan Jackson

—  

Brian M. Satz(3)

35,855

Hayden Yizhuo Zhang

—  

(1)

TheIncludes options were exercisable in full asto purchase 14,342 shares of Histogen common stock, which are fully vested and options to purchase 35,855 shares of Histogen common stock, which are partially vested. With respect to the grant date andpartially vested at the rate ofaward, beginning on April 10, 2018, 1/24th48 of the total number of shares subject to the option onvest in equal monthly installments until the last day of each one-month period of service following February 9, 2011.vesting ratio equals 1/1.

(4)(2)

The restrictedIncludes options to purchase 21,513 shares of Histogen common stock, was issued upon early exercisewhich are fully vested and options to purchase 35,855 shares of Histogen common stock, options grantedwhich are partially vested. With respect to the executive officerpartially vested award, one-fourth of the options vested on the grant date reflected in the table above,March 12, 2018 and shall vest and be released from our repurchase option at the rate of 25%1/48 of the total number of shares subject to the awardoption vest in 36 equal monthly installments until the vesting ratio equals 1/1.

(3)

Includes options to purchase 35,855 shares of Histogen common stock, which are partially vested. One-fourth of the options vested on the one year anniversary of the grant date,May 2, 2018 and 1/48th of the total number of shares subject to the award onoption vest in 36 equal monthly installments until the last day of each month thereafter, provided that the executive officer continues to provide services to us through such dates. Unvested restricted stock is subject to a right of repurchase within 90 days of termination of employment. The stock options granted on December 9, 2011 and December 7, 2012, pursuant to which such restricted stock was issued, were granted at an exercise price of $0.01 per share.vesting ratio equals 1/1.

(5)

The restricted stock was issued upon early exercise of stock options granted to the executive officer on the grant date reflected in the table above, and shall vest and be released from our repurchase option at the rate of 25% of the total number of shares subject to the award on November 1, 2012, and 1/48th of the total number of shares subject to the award on the last day of each month thereafter, provided that the executive officer continues to provide services to us through such dates. Unvested restricted stock is subject to a right of repurchase within 90 days of termination of employment. The stock options granted on December 9, 2011, pursuant to which such restricted stock was issued, was granted at an exercise price of $0.01 per share.

Director Compensation

2012 Director Compensation Table

The following table sets forth information for the year ended December 31, 2012 regarding the compensation awarded to, earned by or paid to our non-employee directors who served on our board of directors during 2012. Employees of our company who also serve as directors do not receive additional compensation for their performance of services as directors.

Name

  Fees Earned or
Paid in Cash

($)
   Stock
Awards
($)
   Option
Awards
($)(1)
   Non-Equity
Incentive Plan
Compensation
($)
   All Other
Compensation
($)
   Total
($)
 

William Gerber, M.D.(2)

       ��                      

David F. Hale 

   20,000                         20,000  

Paul H. Klingenstein

                              

Louis Lacasse

                              

Shahzad Malik, M.D.

                              

Marc Perret

                              

James Scopa

                              

Harold Van Wart, Ph.D.

   20,000                         20,000  

(1)

Amounts shown represent the aggregate grant date fair value of the option awards computed in accordance with FASB Topic ASC 718. These amounts do not correspond to the actual value that will be recognized by the director with respect to such awards. For a detailed description of the assumptions used for purposes of determining grant date fair value, see Note 2 to the consolidated financial statements included elsewhere in this prospectus.

(2)

Dr. Gerber resigned from our board of directors in June 2013.

The table below shows the aggregate numbers of option awards held as of December 31, 2012 by each non-employee director who was serving as of December 31, 2012.

Name

Options Outstanding
at Fiscal Year End

William Gerber, M.D.(1)

David F. Hale 

100,000

Paul H. Klingenstein

Louis Lacasse

Shahzad Malik, M.D.

Marc Perret

James Scopa

Harold Van Wart, Ph.D.

250,000

(1)

Dr. Gerber resigned from our board of directors in June 2013.

Following the effectiveness of this offering, we intend to approve and implement a compensation program for our non-employee directors that will consist of annual retainer fees and long-term equity awards. We expect each non-employee director will receive an annual cash retainer for his or her services in an amount equal to $             and additional amounts that have not yet been determined for service on board committees. We further expect that non-employee directors will also receive initial grants of options to purchase            shares of our common stock, vesting over            years, upon election to the board of directors or, for our current directors, upon the effectiveness of this offering, and thereafter annual grants of options to purchase            shares of our common stock on the date of each annual meeting of stockholders, vesting over              years.

Equity Incentive Award Plans

2013 Equity Incentive Award Plan

Concurrently with this offering, we intend to establish the Conatus Pharmaceuticals, Inc. 2013 Equity Incentive Award Plan, or the 2013 Plan. We expect our board of directors to adopt, and our stockholders to

approve, the 2013 Plan prior to the completion of this offering. The 2013 Plan will become effective on the business day prior to the public trading date of our common stock. The material terms of the 2013 Plan, as it is currently contemplated, are summarized below. Our board of directors is still in the process of developing, approving and implementing the 2013 Plan and, accordingly, this summary is subject to change.

Authorized Shares. A total of                      shares of our common stock will initially be reserved for issuance under the 2013 Plan. In addition, the number of shares initially reserved under the 2013 Plan will be increased by (1) the number of shares that as of the closing of this offering, have been reserved but not issued pursuant to any awards granted under our 2006 Equity Incentive Plan and are not subject to any awards granted thereunder, and (2) the number of shares subject to stock options or similar awards granted under the 2006 Equity Incentive Plan that expire or otherwise terminate without having been exercised in full and unvested shares issued pursuant to awards granted under the 2006 Equity Incentive Plan that are forfeited to or repurchased by us, with the maximum number of shares to be added to the 2013 Plan pursuant to clauses (1) and (2) above equal to                      shares. In addition, the number of shares available for issuance under the 2013 Plan will be annually increased on the first day of each of our fiscal years during the term of the 2013 Plan, beginning with the 2014 fiscal year, by an amount equal to the least of:

                     shares;

            % of the outstanding shares of our common stock as of the last day of our immediately preceding fiscal year; or

such other amount as our board of directors may determine.

The 2013 Plan will also provide for an aggregate limit of shares of common stock that may be issued under the 2013 Plan over the course of its ten-year term.

Shares issued pursuant to awards under the 2013 Plan that we repurchase or that are forfeited, as well as shares used to pay the exercise price of an award or to satisfy the tax withholding obligations related to an award, will become available for future grant under the 2013 Plan. In addition, to the extent that an award is paid out in cash rather than shares, such cash payment will not reduce the number of shares available for issuance under the 2013 Plan.

Plan Administration. The compensation committee of our board of directors will administer the 2013 Plan (except with respect to any award granted to “independent directors” (as defined in the 2013 Plan), which must be administered by our full board of directors). Following the completion of this offering, to administer the 2013 Plan, our compensation committee must consist solely of at least two members of our board of directors, each of whom is a “non-employee director” for purposes of Rule 16b-3 under the Securities Exchange Act of 1934, as amended, or the Exchange Act, and, with respect to awards that are intended to constitute performance-based compensation under Section 162(m) of the Internal Revenue Code of 1986, as amended, or the Code, an “outside director” for purposes of Section 162(m). Subject to the terms and conditions of the 2013 Plan, our compensation committee has the authority to select the persons to whom awards are to be made, to determine the type or types of awards to be granted to each person, the number of awards to grant, the number of shares to be subject to such awards, and the terms and conditions of such awards, and to make all other determinations and decisions and to take all other actions necessary or advisable for the administration of the 2013 Plan. Our compensation committee is also authorized to establish, adopt, amend or revise rules relating to administration of the 2013 Plan. Our board of directors may at any time revest in itself the authority to administer the 2013 Plan.

Eligibility. Options, stock appreciation rights, or SARs, restricted stock and other awards under the 2013 Plan may be granted to individuals who are then our officers or employees or are the officers or employees of any of our subsidiaries or parent entities. Such awards may also be granted to our non-employee directors and consultants but only employees may be granted incentive stock options, or ISOs. As of December 31, 2012, there were eight non-employee directors and approximately 14 employees who would have been eligible for awards under the 2013 Plan had it been in effect on such date. At such time after the completion of this offering when we are subject to the requirements of Section 162(m) of the Code, the maximum number of shares that may be subject to awards granted under the 2013 Plan to any individual (other than non-employee directors) in any calendar year cannot exceed          and the maximum amount that may be paid to a participant in cash during any

calendar year with respect to one or more cash based awards under the 2013 Plan is $                    . In addition, the maximum number of shares that may be subject to awards granted under the 2013 Plan to any non-empolyee director in any calendar year cannot exceed                     .

Awards. The 2013 Plan provides that our compensation committee (or the board of directors, in the case of awards to non-employee directors) may grant or issue stock options, SARs, restricted stock, restricted stock units, dividend equivalents, stock payments and performance awards, or any combination thereof. Our compensation committee (or the board of directors, in the case of awards to non-employee directors) will consider each award grant subjectively, considering factors such as the individual performance of the recipient and the anticipated contribution of the recipient to the attainment of our long-term goals. Each award will be set forth in a separate agreement with the person receiving the award and will indicate the type, terms and conditions of the award.

Nonqualified stock options, or NQSOs, will provide for the right to purchase shares of our common stock at a specified price which may not be less than the fair market value of a share of common stock on the date of grant, and usually will become exercisable (at the discretion of our compensation committee or our board of directors, in the case of awards to non-employee directors) in one or more installments after the grant date, subject to the participant’s continued employment or service with us and/or subject to the satisfaction of performance targets established by our compensation committee (or our board of directors, in the case of awards to non-employee directors). NQSOs may be granted for any term specified by our compensation committee (or our board of directors, in the case of awards to non-employee directors).

ISOs will be designed to comply with the provisions of the Code and will be subject to specified restrictions contained in the Code. Among such restrictions, ISOs must have an exercise price of not less than the fair market value of a share of common stock on the date of grant, may only be granted to employees, must expire within a specified period of time following the optionee’s termination of employment, and must be exercised within ten years after the date of grant. In the case of an ISO granted to an individual who owns (or is deemed to own) more than 10% of the total combined voting power of all classes of our capital stock, the 2013 Plan provides that the exercise price must be at least 110% of the fair market value of a share of common stock on the date of grant and the ISO must expire upon the fifth anniversary of the date of grant.

Restricted stock may be granted to participants and made subject to such restrictions as may be determined by our compensation committee (or our board of directors, in the case of awards to non-employee directors). Typically, restricted stock may be forfeited for no consideration if the conditions or restrictions are not met, and it may not be sold or otherwise transferred to third parties until the restrictions are removed or expire. Recipients of restricted stock, unlike recipients of options, may have voting rights and may receive dividends, if any, prior to the time when the restrictions lapse.

Restricted stock units may be awarded to participants, typically without payment of consideration or for a nominal purchase price, but subject to vesting conditions including continued employment or performance criteria established by our compensation committee (or our board of directors, in the case of awards to non-employee directors). Like restricted stock, restricted stock units may not be sold or otherwise transferred or hypothecated until vesting conditions are removed or expire. Unlike restricted stock, stock underlying restricted stock units will not be issued until the restricted stock units have vested, and recipients of restricted stock units generally will have no voting or dividend rights prior to the time when vesting conditions are satisfied.

SARs granted under the 2013 Plan typically will provide for payments to the holder based upon increases in the price of our common stock over the exercise price of the SAR. Except as required by Section 162(m) of the Code with respect to SARs intended to qualify as performance-based compensation as described in Section 162(m) of the Code, there are no restrictions specified in the 2013 Plan on the exercise of SARs or the amount of gain realizable therefrom. Our compensation committee (or the board of directors, in the case of awards to non-employee directors) may elect to pay SARs in cash or in common stock or in a combination of both.

Dividend equivalents represent the value of the dividends, if any, per share paid by us, calculated with reference to the number of shares covered by the stock options, SARs or other awards held by the participant.

Performance awards may be granted by our compensation committee on an individual or group basis. Generally, these awards will be based upon the attainment of specific performance goals that are established by our compensation committee and relate to one or more performance criteria on a specified date or dates determined by our compensation committee. Any such cash bonus paid to a “covered employee” within the meaning of Section 162(m) of the Code may be, but need not be, qualified performance-based compensation as described below and will be paid in cash.

Stock payments may be authorized by our compensation committee (or our board of directors, in the case of awards to non-employee directors) in the form of common stock or an option or other right to purchase common stock as part of any bonus, deferred compensation or other arrangement, made in lieu of all or any part of compensation, that would otherwise be payable to employees, consultants or members of our board of directors.

Transferability of Awards. Unless the administrator provides otherwise, our 2013 Plan generally does not allow for the transfer of awards and only the recipient of an option or SAR may exercise such an award during his or her lifetime.

Qualified Performance-Based Compensation. The compensation committee may designate employees as “covered employees” whose compensation for a given fiscal year may be subject to the limit on deductible compensation imposed by Section 162(m) of the Code. The compensation committee may grant to such covered employees restricted stock, dividend equivalents, stock payments, restricted stock units, cash bonuses and other stock-based awards that are paid, vest or become exercisable upon the attainment of company performance criteria which are related to one or more of the following performance criteria as applicable to our performance or the performance of a division, business unit or an individual: operating or other costs and expenses, improvements in expense levels, cash flow (including, but not limited to, operating cash flow and free cash flow), return on assets, return on capital, stockholders’ equity, return on stockholders’ equity, total stockholder return, return on sales, gross or net profit or operating margin, working capital, net earnings (either before or after interest, taxes, depreciation and amortization), gross or net sales or revenue, net income (either before or after taxes), adjusted net income, operating earnings, earnings per share of stock, adjusted earnings per share of stock, price per share of stock, regulatory body approval for commercialization of a product, capital raised in financing transactions or other financing milestones, market recognition (including but not limited to awards and analyst ratings), financial ratios, implementation or completion of critical projects, market share, economic value, comparisons with various stock market indices, and implementation, completion or attainment of objectively determinable objectives relating to research, development, regulatory, commercial or strategic milestones or development. These performance criteria may be measured in absolute terms or as compared to performance in an earlier period or as compared to any incremental increase or decrease or as compared to results of a peer group or to market performance indicators or indices.

The compensation committee may provide that one or more objectively determinable adjustments will be made to one or more of the performance goals established for any performance period. Such adjustments may include one or more of the following: items related to a change in accounting principle, items relating to financing activities, expenses for restructuring or productivity initiatives, other non-operating items, items related to acquisitions, items attributable to the business operations of any entity acquired by us during the performance period, items related to the disposal of a business or segment of a business, items related to discontinued operations that do not qualify as a segment of a business under applicable accounting standards, items attributable to any stock dividend, stock split, combination or exchange of shares occurring during the performance period, any other items of significant income or expense which are determined to be appropriate adjustments, items relating to unusual or extraordinary corporate transactions, events or developments, items related to amortization of acquired intangible assets, items that are outside the scope of our core, on-going business activities, items related to acquired in-process research and development, items relating to changes in tax laws, items relating to major licensing or partnership arrangements, items relating to asset impairment charges, items relating to gains and losses for litigation, arbitration or contractual settlements, or items relating to any other unusual or nonrecurring events or changes in applicable laws, accounting principles or business conditions.

Forfeiture, Recoupment and Clawback Provisions. Pursuant to its general authority to determine the terms and conditions applicable to awards under the 2013 Plan, the compensation committee has the right to provide, in an award agreement or otherwise, that an award shall be subject to the provisions of any recoupment or clawback policies implemented by us, including, without limitation, any recoupment or clawback policies adopted to comply with the requirements of the Dodd-Frank Wall Street Reform and Consumer Protection Act and any rules or regulations promulgated thereunder.

Adjustments. If there is any stock dividend, stock split, combination or exchange of shares, merger, consolidation or other distribution (other than normal cash dividends) of our assets to stockholders, or any other change affecting the shares of our common stock or the share price of our common stock other than an equity restructuring (as defined in the 2013 Plan), the plan administrator may make such equitable adjustments, if any, as the plan administrator in its discretion may deem appropriate to reflect such change with respect to (1) the aggregate number and type of shares that may be issued under the 2013 Plan (including, but not limited to, adjustments of the number of shares available under the 2013 Plan and the maximum number of shares which may be subject to one or more awards to a participant pursuant to the 2013 Plan during any calendar year), (2) the number and kind of shares, or other securities or property, subject to outstanding awards, (3) the number and kind of shares, or other securities or property, for which automatic grants are to be subsequently made to new and continuing non-employee directors, (4) the terms and conditions of any outstanding awards (including, without limitation, any applicable performance targets or criteria with respect thereto), and (5) the grant or exercise price per share for any outstanding awards under the 2013 Plan. If there is any equity restructuring, (1) the number and type of securities subject to each outstanding award and the grant or exercise price per share for each outstanding award, if applicable, will be proportionately adjusted, and (2) the plan administrator will make proportionate adjustments to reflect such equity restructuring with respect to the aggregate number and type of shares that may be issued under the 2013 Plan (including, but not limited to, adjustments of the number of shares available under the 2013 Plan and the maximum number of shares which may be subject to one or more awards to a participant pursuant to the 2013 Plan during any calendar year). Adjustments in the event of an equity restructuring will not be discretionary. Any adjustment affecting an award intended as “qualified performance-based compensation” will be made consistent with the requirements of Section 162(m) of the Code. The plan administrator also has the authority under the 2013 Plan to take certain other actions with respect to outstanding awards in the event of a corporate transaction, including provision for the cash-out, termination, assumption or substitution of such awards.

Corporate Transactions. In the event of a change in control where the acquirer does not assume awards granted under the 2013 Plan, awards issued under the 2013 Plan will be subject to accelerated vesting such that 100% of the awards will become vested and exercisable or payable, as applicable. Under the 2013 Plan, a change in control is generally defined as:

a transaction or series of related transactions (other than an offering of our stock to the general public through a registration statement filed with the Securities and Exchange Commission, or SEC) whereby any person or entity or related group of persons or entities (other than us, our subsidiaries, an employee benefit plan maintained by us or any of our subsidiaries or a person or entity that, prior to such transaction, directly or indirectly controls, is controlled by, or is under common control with, us) directly or indirectly acquires beneficial ownership (within the meaning of Rule 13d-3 under the Exchange Act) of 50% or more of the total combined voting power of our securities outstanding immediately after such acquisition;

during any two-year period, individuals who, at the beginning of such period, constitute our board of directors together with any new director(s) whose election by our board of directors or nomination for election by our stockholders was approved by a vote of at least two-thirds of the directors then still in office who either were directors at the beginning of the two-year period or whose election or nomination for election was previously so approved, cease for any reason to constitute a majority of our board of directors;

our consummation (whether we are directly or indirectly involved through one or more intermediaries) of (x) a merger, consolidation, reorganization, or business combination or (y) the sale or other disposition of all or substantially all of our assets in any single transaction or series of transactions or (z) the acquisition of assets or stock of another entity, in each case other than a transaction:

which results in our voting securities outstanding immediately before the transaction continuing to represent (either by remaining outstanding or by being converted into our voting securities or the voting securities of the person that, as a result of the transaction, controls us, directly or indirectly, or owns, directly or indirectly, all or substantially all of our assets or otherwise succeeds to our business (we or such person being referred to as a successor entity)) directly or indirectly, at least 50% of the combined voting power of the successor entity’s outstanding voting securities immediately after the transaction; and

after which no person or group beneficially owns voting securities representing 50% or more of the combined voting power of the successor entity; provided, however, that no person or group is treated as beneficially owning 50% or more of combined voting power of the successor entity solely as a result of the voting power held in us prior to the consummation of the transaction; or

our stockholders approve a liquidation or dissolution of the company.

Amendment, Termination. Our board of directors has the authority to amend, suspend or terminate the 2013 Plan at any time. However, stockholder approval of any amendment to the 2013 Plan will be obtained to the extent necessary to comply with any applicable law, regulation or stock exchange rule. Additionally, stockholder approval is required within 12 months of an increase in the maximum number of shares issuable under the 2013 Plan or that may be issued to an individual in any calendar year. Except as necessary to comply with Section 409A of the Code, no amendment, suspension or termination of the 2013 Plan will impair the rights or obligations of a holder under an award theretofore granted, unless such award expressly so provides or such holder consents. If not terminated earlier by our board of directors, the 2013 Plan will terminate on the tenth anniversary of the date of its initial approval by our board of directors.

Repricing Permitted. Our compensation committee (or the board of directors, in the case of awards to non-employee directors) shall have the authority, without the approval of our stockholders, to authorize the amendment of any outstanding award to reduce its price per share and to provide that an award will be canceled and replaced with the grant of an award having a lesser price per share.

Securities Laws and Federal Income Taxes. The 2013 Plan is designed to comply with various securities and federal tax laws as follows:

Securities Laws. The 2013 Plan is intended to conform to all provisions of the Securities Act of 1933, as amended, and the Exchange Act and any and all regulations and rules promulgated by the SEC thereunder, including, without limitation, Rule 16b-3. The 2013 Plan will be administered, and awards will be granted and may be exercised, only in such a manner as to conform to such laws, rules and regulations.

Federal Income Tax Consequences. The material federal income tax consequences of the 2013 Plan under current federal income tax law are summarized in the following discussion, which deals with the general tax principles applicable to the 2013 Plan. The following discussion is based upon laws, regulations, rulings and decisions now in effect, all of which are subject to change. Foreign, state and local tax laws, and employment, estate and gift tax considerations are not discussed due to the fact that they may vary depending on individual circumstances and from locality to locality.

Stock Options and Stock Appreciation Rights. A 2013 Plan participant generally will not recognize taxable income and we generally will not be entitled to a tax deduction upon the grant of a stock option or stock appreciation right. The tax consequences of exercising a stock option and the subsequent disposition of the shares received upon exercise will depend upon whether the option qualifies as an ISO as defined in Section 422 of the Code. The 2013 Plan permits the grant of options that are intended to qualify as ISOs as well as options that are not intended to so qualify; however, ISOs generally may be granted only to our employees and employees of our parent or subsidiary corporations, if any. Upon exercising an option that does not qualify as an ISO when the fair market value of our stock is higher than the exercise price of the option, a 2013 Plan participant generally will recognize taxable income at ordinary income tax rates equal to the excess of the fair market value of the stock on the date of exercise over the purchase price, and we (or our subsidiaries, if any) generally will be entitled to a corresponding tax deduction for compensation expense, in the amount equal to the amount by which the fair market value of the shares purchased exceeds the purchase price for the shares. Upon a subsequent sale or other disposition of the option shares, the

participant will recognize a short-term or long-term capital gain or loss in the amount of the difference between the sales price of the shares and the participant’s tax basis in the shares.

Upon exercising an ISO, a 2013 Plan participant generally will not recognize taxable income, and we will not be entitled to a tax deduction for compensation expense. However, upon exercise, the amount by which the fair market value of the shares purchased exceeds the purchase price will be an item of adjustment for alternative minimum tax purposes. The participant will recognize taxable income upon a sale or other taxable disposition of the option shares. For federal income tax purposes, dispositions are divided into two categories: qualifying and disqualifying. A qualifying disposition generally occurs if the sale or other disposition is made more than two years after the date the option was granted and more than one year after the date the shares are transferred upon exercise. If the sale or disposition occurs before these two periods are satisfied, then a disqualifying disposition generally will result.

Upon a qualifying disposition of ISO shares, the participant will recognize long-term capital gain in an amount equal to the excess of the amount realized upon the sale or other disposition of the shares over their purchase price. If there is a disqualifying disposition of the shares, then the excess of the fair market value of the shares on the exercise date (or, if less, the price at which the shares are sold) over their purchase price will be taxable as ordinary income to the participant. If there is a disqualifying disposition in the same year of exercise, it eliminates the item of adjustment for alternative minimum tax purposes. Any additional gain or loss recognized upon the disposition will be recognized as a capital gain or loss by the participant.

We will not be entitled to any tax deduction if the participant makes a qualifying disposition of ISO shares. If the participant makes a disqualifying disposition of the shares, we should be entitled to a tax deduction for compensation expense in the amount of the ordinary income recognized by the participant.

Upon exercising or settling a SAR, a 2013 Plan participant will recognize taxable income at ordinary income tax rates, and we should be entitled to a corresponding tax deduction for compensation expense, in the amount paid or value of the shares issued upon exercise or settlement. Payments in shares will be valued at the fair market value of the shares at the time of the payment, and upon the subsequent disposition of the shares the participant will recognize a short-term or long-term capital gain or loss in the amount of the difference between the sales price of the shares and the participant’s tax basis in the shares.

Restricted Stock and Restricted Stock Units. A 2013 Plan participant generally will not recognize taxable income at ordinary income tax rates and we generally will not be entitled to a tax deduction upon the grant of restricted stock or restricted stock units. Upon the termination of restrictions on restricted stock or the payment of restricted stock units, the participant will recognize taxable income at ordinary income tax rates, and we should be entitled to a corresponding tax deduction for compensation expense, in the amount paid to the participant or the amount by which the then fair market value of the shares received by the participant exceeds the amount, if any, paid for them. Upon the subsequent disposition of any shares, the participant will recognize a short-term or long-term capital gain or loss in the amount of the difference between the sales price of the shares and the participant’s tax basis in the shares. However, a 2013 Plan participant granted restricted stock that is subject to forfeiture or repurchase through a vesting schedule such that it is subject to a “risk of forfeiture” (as defined in Section 83 of the Code) may make an election under Section 83(b) of the Code to recognize taxable income at ordinary income tax rates, at the time of the grant, in an amount equal to the fair market value of the shares of common stock on the date of grant, less the amount paid, if any, for such shares. We will be entitled to a corresponding tax deduction for compensation, in the amount recognized as taxable income by the participant. If a timely Section 83(b) election is made, the participant will not recognize any additional ordinary income on the termination of restrictions on restricted stock, and we will not be entitled to any additional tax deduction.

Dividend Equivalents, Stock Payment Awards and Cash-Based Awards. A 2013 Plan participant will not recognize taxable income and we will not be entitled to a tax deduction upon the grant of dividend equivalents, stock payment awards or cash-based awards until cash or shares are paid or distributed to the participant. At that time, any cash payments or the fair market value of shares that the participant receives will be taxable to the participant at ordinary income tax rates and we should be entitled to a corresponding

tax deduction for compensation expense. Payments in shares will be valued at the fair market value of the shares at the time of the payment, and upon the subsequent disposition of the shares, the participant will recognize a short-term or long-term capital gain or loss in the amount of the difference between the sales price of the shares and the participant’s tax basis in the shares.

Section 409A of the Code. Certain types of awards under the 2013 Plan may constitute, or provide for, a deferral of compensation under Section 409A. Unless certain requirements set forth in Section 409A are complied with, holders of such awards may be taxed earlier than would otherwise be the case (e.g., at the time of vesting instead of the time of payment) and may be subject to an additional 20% federal income tax (and, potentially, certain interest penalties). To the extent applicable, the 2013 Plan and awards granted under the 2013 Plan will be structured and interpreted to comply with Section 409A and the Department of Treasury regulations and other interpretive guidance that may be issued pursuant to Section 409A.

Section 162(m) Limitation. In general, under Section 162(m) of the Code, income tax deductions of publicly held corporations may be limited to the extent total compensation (including base salary, annual bonus, stock option exercises and non-qualified benefits paid) for certain executive officers exceeds $1 million (less the amount of any “excess parachute payments” as defined in Section 280G of the Code) in any one year. However, under Section 162(m), the deduction limit does not apply to certain “performance-based compensation” if an independent compensation committee determines performance goals and if the material terms of the performance-based compensation are disclosed to and approved by our stockholders. In particular, stock options and SARs will satisfy the “performance-based compensation” exception if the awards are made by a qualifying compensation committee, the plan sets the maximum number of shares that can be granted to any person within a specified period and the compensation is based solely on an increase in the stock price after the grant date. Specifically, the option exercise price must be equal to or greater than the fair market value of the stock subject to the award on the grant date. Under a Section 162(m) transition rule for compensation plans of corporations which are privately held and which become publicly held in an initial public offering, certain awards under the 2013 Plan will not be subject to Section 162(m) until a specified transition date, which is the earlier of (1) the material modification of the 2013 Plan, (2) the issuance of all employer stock and other compensation that has been allocated under the 2013 Plan, or (3) the first annual meeting of stockholders at which directors are to be elected that occurs after the close of the third calendar year following the calendar year in which the initial public offering occurs. After the transition date, rights or awards granted under the 2013 Plan, other than options and SARs, will not qualify as “performance-based compensation” for purposes of Section 162(m) unless such rights or awards are granted or vest upon pre-established objective performance goals, the material terms of which are disclosed to and approved by our stockholders.

We have attempted to structure the 2013 Plan in such a manner that, after the transition date, the compensation attributable to stock options and SARs which meet the other requirements of Section 162(m) will not be subject to the $1 million limitation. We have not, however, requested a ruling from the Internal Revenue Service or an opinion of counsel regarding this issue.

2006 Equity Incentive Plan

On March 27, 2006, our board of directors and our stockholders approved the Conatus Pharmaceuticals, Inc. 2006 Equity Incentive Plan, or the 2006 Plan.

As of March 31, 2013, a total of 8,500,000 shares of our common stock are reserved for issuance under the 2006 Plan. As of March 31, 2013, 4,899,000 shares of our common stock were subject to outstanding option awards and 69,500 shares of our common stock remained available for future issuance. After the effective date of the 2013 Plan, no additional awards will be granted under the 2006 Plan.

Administration. The compensation committee of our board of directors administers the 2006 Plan, except with respect to any award granted to non-employee directors (as defined in the 2006 Plan), which must be administered by our full board of directors. Subject to the terms and conditions of the 2006 Plan, the administrator has the authority to select the persons to whom awards are to be made, to determine the type or types of awards to be granted to each person, determine the number of awards to grant, determine the number of

shares to be subject to such awards, and the terms and conditions of such awards, and make all other determinations and decisions and to take all other actions necessary or advisable for the administration of the 2006 Plan. The plan administrator is also authorized to establish, adopt, amend or revise rules relating to administration of the 2006 Plan, subject to certain restrictions.

Eligibility. Options, SARs, restricted stock and other awards under the 2006 Plan may be granted to individuals who are then our employees, consultants and members of our board of directors or are employees, consultants or directors of our subsidiaries or parent entities. Only employees may be granted ISOs.

Awards. The 2006 Plan provides that our administrator may grant or issue stock options, restricted stock, restricted stock units, SARs, dividend equivalents, stock payments, or any combination thereof. The administrator considers each award grant subjectively, considering factors such as the individual performance of the recipient and the anticipated contribution of the recipient to the attainment of our long-term goals. Each award is set forth in a separate agreement with the person receiving the award and indicates the type, terms and conditions of the award.

NQSOs provide for the right to purchase shares of our common stock at a specified price which may not be less than the fair market value of a share of stock on the date of grant, and usually will become exercisable (at the discretion of our compensation committee or the board of directors, in the case of awards to non-employee directors) in one or more installments after the grant date, subject to the participant’s continued employment or service with us and/or subject to the satisfaction of performance targets established by our compensation committee (or the board of directors, in the case of awards to non-employee directors). NQSOs may be granted for any term specified by our compensation committee (or the board of directors, in the case of awards to non-employee directors), but the term may not exceed ten years.

ISOs are designed to comply with the provisions of the Internal Revenue Code and are subject to specified restrictions contained in the Internal Revenue Code applicable to ISOs. Among such restrictions, ISOs must have an exercise price of not less than the fair market value of a share of common stock on the date of grant, may only be granted to employees, must expire within a specified period of time following the optionee’s termination of employment, and must be exercised within the ten years after the date of grant. In the case of an ISO granted to an individual who owns (or is deemed to own) more than 10% of the total combined voting power of all classes of our capital stock on the date of grant, the 2006 Plan provides that the exercise price must be at least 110% of the fair market value of a share of common stock on the date of grant and the ISO must expire on the fifth anniversary of the date of its grant.

Restricted stock may be granted to participants and made subject to such restrictions as may be determined by the administrator. Typically, restricted stock may be repurchased by us at the original purchase price or, if no cash consideration was paid for such stock, forfeited for no consideration if the conditions or restrictions are not met, and the restricted stock may not be sold or otherwise transferred to third parties until restrictions are removed or expire. Recipients of restricted stock, unlike recipients of options, may have voting rights and may receive dividends, if any, prior to when the restrictions lapse.

Restricted stock units may be awarded to participants, typically without payment of consideration or for a nominal purchase price, but subject to vesting conditions including continued employment or performance criteria established by the administrator. Like restricted stock, restricted stock units may not be sold or otherwise transferred or hypothecated until vesting conditions are removed or expire. Unlike restricted stock, stock underlying restricted stock units will not be issued until some time after the restricted stock units have vested, and recipients of restricted stock units generally will have no voting or dividend rights prior to the time when vesting conditions are satisfied and the shares have been issued.

SARs typically will provide for payments to the holder based upon increases in the price of our common stock over the exercise price of the SAR. There are no restrictions specified in the 2006 Plan on the exercise of SARs or the amount of gain realizable therefrom. Subject to certain terms and conditions of the 2006 Plan, the administrator may elect to pay SARs in cash or in common stock or in a combination of both.

Dividend equivalents may be awarded to participants and represent the value of the dividends, if any, per share paid by us, calculated with reference to the number of shares covered by the stock options, SARs or other awards held by the participant.

Stock payments may be authorized by the administrator in the form of common stock or an option or other right to purchase common stock as part of any bonus, deferred compensation or other arrangement, made in lieu of all or any part of compensation, that would otherwise be payable to employees, consultants or members of our board of directors.

Corporate Transactions. In the event of a change of control where the acquiror does not assume awards granted under the 2006 Plan, awards issued under the 2006 Plan will be subject to accelerated vesting such that 100% of the awards will become vested and exercisable or payable, as applicable, immediately prior to the change in control. Under the 2006 Plan, a change of control is generally defined as:

a transaction or series of related transactions whereby any person or entity or related group of persons or entities (other than us, our subsidiaries, an employee benefit plan maintained by us or any of our subsidiaries or a person or entity that, prior to such transaction, directly or indirectly controls, is controlled by, or is under common control with, us) directly or indirectly acquires beneficial ownership (within the meaning of Rule 13d-3 under the Exchange Act) of 50% or more of the total combined voting power of our securities outstanding immediately after such acquisition;

during any two-year period, individuals who, at the beginning of such period, constitute our board of directors together with any new director(s) whose election by our board of directors or nomination for election by our stockholders was approved by a vote of at least two-thirds of the directors then still in office who either were directors at the beginning of the two-year period or whose election or nomination for election was previously so approved, cease for any reason to constitute a majority of our board of directors;

our consummation (whether we are directly or indirectly involved through one or more intermediaries) of (1) a merger, consolidation, reorganization, or business combination, (2) the sale or other disposition of all or substantially all of our assets or (3) the acquisition of assets or stock of another entity, in each case other than a transaction that results in our voting securities outstanding immediately before the transaction continuing to represent, directly or indirectly, at least 50% of the combined voting power of the successor entity’s outstanding voting securities immediately after the transaction, and after which no person or entity beneficially owns voting securities representing 50% or more of the combined voting power of the acquiring company that is not attributable to voting power held in the company prior to such transaction; or

the approval by our stockholders of a liquidation or dissolution of our company.

Amendment and Termination of the 2006 Plan. Our board of directors may terminate, amend or modify the 2006 Plan. However, stockholder approval of any amendment to the 2006 Plan must be obtained to the extent necessary and desirable to comply with any applicable law, regulation or stock exchange rule, or for any amendment to the 2006 Plan that increases the number of shares available under the 2006 Plan. The administrator may, with the consent of the affected option holders, cancel any or all outstanding options under the 2006 Plan and grant new options in substitution. If not terminated earlier by the compensation committee or the board of directors, the 2006 Plan will terminate on March 26, 2016.

Securities Laws and Federal Income Taxes. The 2006 Plan is designed to comply with applicable securities laws in the same manner as described above in the description of the 2013 Plan under the heading “—2013 Equity Incentive Award Plan—Securities Laws and Federal Income Taxes—Securities Laws.” The general federal tax consequences of awards under the 2006 Plan are the same as those described above in the description of the 2013 Plan under the heading “—2013 Equity Incentive Award Plan—Securities Laws and Federal Income Taxes—Federal Income Taxes.”

2013 Employee Stock Purchase Plan

Concurrently with this offering, we intend to establish the Conatus Pharmaceuticals, Inc. 2013 Employee Stock Purchase Plan, or the ESPP. We expect our board of directors to adopt, and our stockholders to approve, the ESPP prior to the completion of this offering. The ESPP will become effective on the business day prior to the public trading date of our common stock. Our executive officers and all of our other employees will be allowed to participate in our ESPP, subject to the eligibility requirements described below. The material terms of the ESPP, as it is currently contemplated, are summarized below. Our board of directors is still in the process of developing, approving and implementing the ESPP and, accordingly, this summary is subject to change.

A total of                      shares of our common stock will initially be reserved for issuance under our ESPP. In addition, the number of shares available for issuance under the ESPP will be annually increased on the first day of each fiscal year during the term of the ESPP, beginning with the 2014 fiscal year, by an amount equal to the least of:

                     shares;

            % of the outstanding shares of our common stock as of the last day of our immediately preceding fiscal year; or

such other amount as may be determined by our board of directors.

The ESPP will also provide for an aggregate limit of shares of common stock that may be issued under the ESPP during the term of the ESPP.

Our board of directors or its committee has full and exclusive authority to interpret the terms of the ESPP and determine eligibility. We expect that our compensation committee will be the initial administrator of the ESPP.

Our employees are eligible to participate in the ESPP if they are customarily employed by us or any participating subsidiary for at least 20 hours per week and more than five months in any calendar year. However, an employee may not be granted rights to purchase stock under our ESPP if such employee, immediately after the grant, would own (directly or through attribution) stock possessing 5% or more of the total combined voting power or value of all classes of our common or other class of stock.

Our ESPP is intended to qualify under Code Section 423 and stock will be offered under the ESPP during offering periods. The length of the offering periods under the ESPP will be determined by our compensation committee and may be up to 27 months long. Employee payroll deductions will be used to purchase shares on each purchase date during an offering period. The purchase dates will be determined by the compensation committee for each offering period, but will generally be the last day in each offering period. Offering periods under the ESPP will commence when determined by our compensation committee. The compensation committee may, in its discretion, modify the terms of future offering periods.

Our ESPP permits participants to purchase common stock through payroll deductions of up to             % of their eligible compensation, which includes a participant’s gross base compensation for services to the company, excluding overtime payments, sales commissions, incentive compensation, bonuses, expense reimbursements, fringe benefits and other special payments. A participant may purchase a maximum of                      shares of common stock during each offering period. In addition, no employee will be permitted to accrue the right to purchase stock under the ESPP at a rate in excess of $25,000 worth of shares during any calendar year during which such a purchase right is outstanding (based on the fair market value per share of our common stock as of the first day of the offering period).

On the first trading day of each offering period, each participant automatically is granted an option to purchase shares of our common stock. The option expires at the end of the offering period or upon termination of employment, whichever is earlier, but is exercised at the end of each purchase period to the extent of the payroll deductions accumulated during such purchase period. The purchase price of the shares will be 85% of the lower of the fair market value of our common stock on the first trading day of the offering period or on the applicable purchase date. Participants may end their participation at any time during an offering period, and will be paid their accrued payroll deductions that have not yet been used to purchase shares of common stock. Participation ends automatically upon termination of employment with us.

A participant may not transfer rights granted under the ESPP other than by will, the laws of descent and distribution or as otherwise provided under the ESPP.

In the event of certain significant transactions or a change in control (as defined in the ESPP), the compensation committee may provide for: (1) either the replacement or termination of outstanding rights in exchange for cash; (2) the assumption or substitution of outstanding rights by the successor or survivor corporation or parent or subsidiary thereof, if any; (3) the adjustment in the number and type of shares of stock subject to outstanding rights; (4) the use of participants’ accumulated payroll deductions to purchase stock on a new purchase date prior to the next purchase date and termination of any rights under ongoing offering periods;

or (5) the termination of all outstanding rights. Under the ESPP, a change in control has the same definition as given to such term in the 2013 Plan.

The compensation committee may amend, suspend or terminate the ESPP. However, stockholder approval of any amendment to the ESPP will be obtained for any amendment which changes the aggregate number or type of shares that may be sold pursuant to rights under the ESPP, changes the corporations or classes of corporations whose employees are eligible to participate in the ESPP or changes the ESPP in any manner that would cause the ESPP to no longer be an employee stock purchase plan within the meaning of Section 423(b) of the Code. The ESPP will terminate no later than the tenth anniversary of the ESPP’s initial adoption by our board of directors.

Securities Laws. The ESPP has been designed to comply with various securities laws in the same manner as described above in the description of the 2013 Plan.

Federal Income Taxes. The material federal income tax consequences of the ESPP under current federal income tax law are summarized in the following discussion, which deals with the general tax principles applicable to the ESPP. The following discussion is based upon laws, regulations, rulings and decisions now in effect, all of which are subject to change. Foreign, state and local tax laws, and employment, estate and gift tax considerations are not discussed due to the fact that they may vary depending on individual circumstances and from locality to locality.

The ESPP, and the right of participants to make purchases thereunder, is intended to qualify under the provisions of Section 423 of the Code. Under the applicable Code provisions, no income will be taxable to a participant until the sale or other disposition of the shares purchased under the ESPP. This means that an eligible employee will not recognize taxable income on the date the employee is granted an option under the ESPP (i.e., the first day of the offering period). In addition, the employee will not recognize taxable income upon the purchase of shares. Upon such sale or disposition, the participant will generally be subject to tax in an amount that depends upon the length of time such shares are held by the participant prior to disposing of them. If the shares are sold or disposed of more than two years from the first day of the offering period during which the shares were purchased and more than one year from the date of purchase, or if the participant dies while holding the shares, the participant (or his or her estate) will recognize ordinary income measured as the lesser of: (1) the excess of the fair market value of the shares at the time of such sale or disposition over the purchase price; or (2) an amount equal to 15% of the fair market value of the shares as of the first day of the offering period. Any additional gain will be treated as long-term capital gain. If the shares are held for the holding periods described above but are sold for a price that is less than the purchase price, there is no ordinary income and the participating employee has a long-term capital loss for the difference between the sale price and the purchase price.

If the shares are sold or otherwise disposed of before the expiration of the holding periods described above, the participant will recognize ordinary income generally measured as the excess of the fair market value of the shares on the date the shares are purchased over the purchase price and we will be entitled to a tax deduction for compensation expense in the amount of ordinary income recognized by the employee. Any additional gain or loss on such sale or disposition will be long-term or short-term capital gain or loss, depending on how long the shares were held following the date they were purchased by the participant prior to disposing of them. If the shares are sold or otherwise disposed of before the expiration of the holding periods described above but are sold for a price that is less than the purchase price, the participant will recognize ordinary income equal to the excess of the fair market value of the shares on the date of purchase over the purchase price (and we will be entitled to a corresponding deduction), but the participant generally will be able to report a capital loss equal to the difference between the sales price of the shares and the fair market value of the shares on the date of purchase.

Limitations of Liability and Indemnification Matters

Our amended and restated certificate of incorporation and our amended and restated bylaws provide that we will indemnify our directors and officers to the fullest extent permitted by the Delaware General Corporation Law, which prohibits our amended and restated certificate of incorporation from limiting the liability of our directors for the following:

any breach of the director’s duty of loyalty to us or our stockholders;

acts or omissions not in good faith or that involve intentional misconduct or a knowing violation of law;

unlawful payment of dividends or unlawful stock repurchases or redemptions; or

any transaction from which the director derived an improper personal benefit.

Our amended and restated certificate of incorporation and our amended and restated bylaws also provide that if Delaware law is amended to authorize corporate action further eliminating or limiting the personal liability of a director, then the liability of our directors will be eliminated or limited to the fullest extent permitted by Delaware law, as so amended. This limitation of liability does not apply to liabilities arising under the federal securities laws and does not affect the availability of equitable remedies such as injunctive relief or rescission.

Our amended and restated certificate of incorporation and our amended and restated bylaws also provide that we shall have the power to indemnify our employees and agents to the fullest extent permitted by law. Our amended and restated bylaws also permit us to secure insurance on behalf of any officer, director, employee or other agent for any liability arising out of his or her actions in this capacity, regardless of whether our amended and restated bylaws would permit indemnification. We have obtained directors’ and officers’ liability insurance.

We have entered into separate indemnification agreements with our directors and executive officers, in addition to indemnification provided for in our amended and restated certificate of incorporation and amended and restated bylaws. These agreements, among other things, provide for indemnification of our directors and executive officers for expenses, judgments, fines and settlement amounts incurred by this person in any action or proceeding arising out of this person’s services as a director or executive officer or at our request. We believe that these provisions in our amended and restated certificate of incorporation and amended and restated bylaws and indemnification agreements are necessary to attract and retain qualified persons as directors and executive officers.

The above description of the indemnification provisions of our amended and restated certificate of incorporation, our amended and restated bylaws and our indemnification agreements is not complete and is qualified in its entirety by reference to these documents, each of which is incorporated by reference as an exhibit to this registration statement to which this prospectus forms a part.

The limitation of liability and indemnification provisions in our amended and restated certificate of incorporation and amended and restated bylaws may discourage stockholders from bringing a lawsuit against directors for breach of their fiduciary duties. They may also reduce the likelihood of derivative litigation against directors and officers, even though an action, if successful, might benefit us and our stockholders. A stockholder’s investment may be harmed to the extent we pay the costs of settlement and damage awards against directors and officers pursuant to these indemnification provisions. Insofar as indemnification for liabilities under the Securities Act may be permitted to directors, officers or persons controlling us pursuant to the foregoing provisions, we have been informed that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable. There is no pending litigation or proceeding naming any of our directors or officers as to which indemnification is being sought, nor are we aware of any pending or threatened litigation that may result in claims for indemnification by any director or officer.

CERTAIN RELATIONSHIPS AND RELATED PERSON TRANSACTIONS

The following includes a summary of transactions since January 1, 2010 to which we have been a party in which the amount involved exceeded or will exceed $120,000, and in which any of our directors, executive officers or, to our knowledge, beneficial owners of more than 5% of our capital stock or any member of the immediate family of any of the foregoing persons had or will have a direct or indirect material interest, other than equity and other compensation, termination, change in control and other arrangements, which are described under “Executive and Director Compensation.” We also describe below certain other transactions with our directors, executive officers and stockholders.

Preferred Stock Financings and Convertible Notes and Warrant Financing

Series A Convertible Preferred Stock Financing. From October 2006 through December 2006 and in May 2007, we issued and sold to investors in private placements an aggregate of 42,494,218 shares of our Series A convertible preferred stock at a purchase price of $0.75 per share, for aggregate consideration of approximately $31.9 million.

Series B Convertible Preferred Stock Financing. In February and March 2011, we issued and sold to investors in private placements an aggregate of 36,417,224 shares of our Series B convertible preferred stock at a purchase price of $0.90 per share, for aggregate consideration of approximately $32.8 million.

Convertible Note and Warrant Financings. In March 2010, we entered into a note and warrant purchase agreement with certain existing investors pursuant to which we sold, in private placements in March 2010 and October 2010, an aggregate of $5.0 million of convertible promissory notes, or the 2010 Notes, and issued warrants exercisable to purchase shares of our Series A convertible preferred stock, or the 2010 Warrants. The 2010 notes accrued interest at a rate of 8% per annum and were due and payable on the earlier of (1) any date after July 31, 2011 upon which holders of 66 2/3% of the outstanding principal amount and accrued interest on all such 2010 Notes demanded repayment, or (2) the occurrence of a change of control of the company, subject in each case to their earlier conversion in the event we completed a qualified equity financing. In connection with the Series B financing, the principal amount of the 2010 Notes and accrued interest thereon was automatically converted into an aggregate of 5,861,667 shares of our Series B convertible preferred stock in February 2011. The 2010 Warrants are exercisable for an aggregate of 2,333,320 shares of Series A convertible preferred stock at an exercise price of $0.01 per share. We expect these warrants to be net exercised in connection with the completion of this offering, resulting in the issuance of an aggregate of                      shares of common stock, assuming an initial public offering price of $                     per share (the midpoint of the price range set forth on the cover page of this prospectus). If these warrants are not exercised prior to the completion of this offering, they will terminate.

In May 2013, we entered into a note and warrant purchase agreement with certain existing investors pursuant to which we sold, in a private placement in May 2013, an aggregate of $1.0 million of convertible promissory notes, or the 2013 Notes, and issued warrants exercisable to purchase shares of our Series B convertible preferred stock, or the 2013 Warrants. The 2013 Notes accrue interest at a rate of 6% per annum and are due and payable on the earlier of (1) any date after November 30, 2013 upon which holders of 75% of the outstanding principal amount of all such 2013 Notes demand repayment, or (2) the occurrence of a change of control of the company, subject in each case to their earlier conversion in the event we complete a qualified initial public offering or private placement of debt and/or equity. In connection with the completion of this offering, the 2013 Notes (including accrued interest thereon) will automatically convert into                     shares of common stock, assuming an initial public offering price of $                     per share (the midpoint of the price range listed on the cover page of this prospectus) and assuming the conversion occurs on                     , 2013 (the expected closing date of this offering). The 2013 Warrants are exercisable for an aggregate of 1,124,026 shares of Series B convertible preferred stock at an exercise price of $0.90 per share. In connection with the completion of this offering, the 2013 Warrants will become exercisable for an aggregate of                      shares of common stock, at an exercise price of $                     per share. The 2013 Warrants will expire on May 30, 2018.

The following table sets forth the aggregate number of these securities acquired by the listed directors, executive officers or holders of more than 5% of our capital stock, or their affiliates. Each share of, or warrants exercisable for shares of, convertible preferred stock identified in the following table will convert into one share of, or warrants exercisable for, common stock upon completion of this offering, except as described below.

Participants

 Series A
Convertible
Preferred Stock
  Series B
Convertible
Preferred Stock
  Series A
Warrants
  Principal
Amount of
2010 Notes
  Series B
Warrants
  Principal
Amount of
2013 Notes
 

5% or Greater Stockholders(1)

      

Entities affiliated with Aberdare Ventures(2)

  10,729,941    5,983,862    619,766   $1,328,075    43,333   $118,336  

Entities affiliated with Advent Private Equity(3)

  10,000,000    5,576,786    577,599   $1,237,728    76,667   $209,364  

Entities affiliated with Bay City Capital(4)

  10,000,000    5,576,789    577,604   $1,237,728          

Coöperative Gilde Healthcare II U.A.

  6,666,668    3,717,861    385,070   $825,152    222,569   $182,340  

Entities affiliated with MPM Capital(5)

      8,333,334            265,837   $182,056  

AgeChem Venture Fund L.P.

      5,555,556            214,262   $136,542  

Entities affiliated with Roche Finance Ltd(6)

  2,999,999    1,673,036    173,281   $371,318    277,622   $154,748  

Executive Officers and Directors(1)

      

Steven J. Mento, Ph.D.(7)

  786,417                20,256   $15,202  

Charles J. Cashion(8)

  355,352                      

Alfred P. Spada, Ph.D. (9)

  363,927                      

David F. Hale(10)

  162,356                3,480   $2,851  

(1)

Additional details regarding these stockholders and their equity holdings are provided in “Principal Stockholders.”

(2)

Represents securities acquired by Aberdare Ventures III, L.P. and Aberdare Partners III, L.P.

(3)

Represents securities acquired by Advent Private Equity Fund III ‘A’, Advent Private Equity Fund III ‘B’, Advent Private Equity Fund III ‘C’, Advent Private Equity Fund III ‘D’, Advent Private Equity Fund III GmbH & Co KG, Advent Private Equity Fund III Affiliates, Advent Management III Limited Partnership, Advent Private Equity Fund IV and Advent Management IV Limited Partnership.

(4)

Represents securities acquired by Bay City Capital Fund IV Co-Investment Fund, L.P. and Bay City Capital Fund IV, L.P. The convertible preferred stock purchased by such entities was converted into 1,557,678 shares of common stock in May 2013, reducing such entities’ aggregate ownership of our capital stock to less than 5%.

(5)

Represents securities acquired by MPM BioVentures IV-QP, L.P., MPM BioVentures IV GmbH & Co. Beteiligungs KG, MPM Asset Management Investors BV4 LLC, MPM BioVentures V, L.P. and MPM Asset Management Investors BV5 LLC.

(6)

Represents securities acquired by Roche Finance Ltd and Roche Holdings, Inc.

(7)

Represents securities acquired by a family trust.

(8)

Represents securities acquired by a family trust.

(9)

Represents securities acquired by a family trust.

(10)

Represents securities acquired by Hale BioPharma Ventures LLC.

Some of our directors are associated with our principal stockholders as indicated in the table below:

Director

Principal Stockholder

Paul H. Klingenstein

Entities affiliated with Aberdare Ventures

Louis Lacasse

AgeChem Venture Fund L.P.

Shahzad Malik, M.D.

Entities affiliated with Advent Private Equity

Marc Perret

Coöperative Gilde Healthcare II U.A.

James Scopa

Entities affiliated with MPM Capital

Idun Pharmaceuticals, Inc.

In January 2013, we conducted a spin-off of our former subsidiary, Idun Pharmaceuticals, Inc., or Idun, to our stockholders at that time. Immediately prior to the spin-off, all rights relating to emricasan were distributed from Idun to us pursuant to a distribution agreement. The assets remaining in Idun at the time of the spin-off consisted solely of intellectual property rights and license and collaboration agreements unrelated to emricasan.

The spin-off was conducted as a dividend of all of the outstanding capital stock of Idun to our stockholders and, as a result, we no longer own any capital stock of Idun. The aggregate value of Idun at the time of the spin-off was deemed to be $9.6 million based on the valuation of an independent appraisal firm. Because the dividend was taxable to our stockholders and required us to withhold amounts with respect to certain of our non-U.S. stockholders, we agreed to advance the withholding amounts for these non-U.S. stockholders in exchange for promissory notes of equal amount.

Also in connection with the spin-off, we contributed $500,000 to Idun to provide for its initial working capital requirements and entered into a transition services agreement to provide operating services to Idun, generally consisting of accounting support, technology license administration and intellectual property maintenance. Idun must pay us for all direct costs as well as overhead and general and administrative expenses incurred in performing these services. As of March 31, 2013, Idun has not made any payment to us for services provided under the transition services agreement. The initial term of the transition services agreement ends on December 31, 2013, and will renew automatically for successive one year periods until terminated by either Idun or us upon 90 days’ prior notice to the other party.

In March 2013, we entered into a sublicense agreement with Idun in which we were granted the right to use the patent rights and know-how related to the screening and identification of emricasan. These rights were previously granted to Idun under license agreements with Thomas Jefferson University, or TJU. Under the sublicense, we are required to pay directly to TJU a royalty of less than one percent on net sales of emricasan. We also have the right to grant further sublicenses to third parties and are required to pay TJU a portion of any such sublicense revenue we receive. The sublicense agreement will expire upon the date which there are no longer any valid claims in any patents or patent applications sublicensed to us, unless earlier terminated. Idun may terminate the agreement upon a material uncured default. Each of Drs. Mento and Spada and Mr. Cashion continue to serve as officers of Idun in the same capacity as their officer positions with us, and all of our directors currently serve as directors of Idun.

Investor Rights Agreement

We entered into a first amended and restated investor rights agreement in February 2011 with the holders of our convertible preferred stock, including entities with which certain of our directors are affiliated. This agreement provides for certain rights relating to the registration of their shares of common stock and common stock issuable upon conversion of their convertible preferred stock, a right of first refusal to purchase future securities sold by us and certain additional covenants made by us. Except for the registration rights (including the related provisions pursuant to which we have agreed to indemnify the parties to the investor rights agreement), all rights under this agreement will terminate upon completion of this offering. The registration rights will continue following this offering and will terminate seven years following the completion of this offering, or for any particular holder with registration rights, at such time following this offering when all securities held by that stockholder subject to registration rights may be sold pursuant to Rule 144 under the Securities Act in a three-month period. See “Description of Capital Stock—Registration Rights” for additional information.

Voting Agreement

We entered into a first amended and restated voting agreement in February 2011 by and among us and certain of our stockholders, pursuant to which the following directors were each elected to serve as members on our board of directors and, as of the date of this prospectus, continue to so serve: Drs. Malik, Mento and Van Wart and Messrs. Hale, Klingenstein, Lacasse, Perret and Scopa. Pursuant to the voting agreement, Dr. Mento, as our Chief Executive Officer, was initially selected to serve on our board of directors as a representative of holders of our common stock, as designated by a majority of our common stockholders. Dr. Malik and Messrs.

Klingenstein, Lacasse, Perret and Scopa were initially selected to serve on our board of directors as representatives of holders of our convertible preferred stock, as designated by Advent Private Equity Fund IV, Aberdare Ventures III, L.P., AgeChem Venture Fund L.P., Coöperative Gilde Healthcare II U.A. and MPM BioVentures V, L.P., respectively. Mr. Hale and Dr. Van Wart were initially selected to serve on our board of directors as designated by a majority of our common and convertible preferred stock holders, voting together as a single class.

The voting agreement will terminate upon the closing of this offering, and members previously elected to our board of directors pursuant to this agreement will continue to serve as directors until they resign, are removed or their successors are duly elected by holders of our common stock. The composition of our board of directors after this offering is described in more detail under “Management—Board Composition and Election of Directors.”

Participation in this Offering

Entities affiliated with Aberdare Ventures, Advent Private Equity, Coöperative Gilde Healthcare II U.A., MPM Capital, Roche Finance Ltd, AgeChem Venture Fund L.P., Hale BioPharma Ventures LLC and our chief executive officer, each of which is a current stockholder, have indicated an interest in purchasing an aggregate of approximately $10.0 million of shares of our common stock in this offering. However, because indications of interest are not binding agreements or commitments to purchase, the underwriters may determine to sell more, less or no shares in this offering to any of these entities, or any of these entities may determine to purchase more, less or no shares in this offering.

Employment Agreements

We have entered into employment agreements with our named executive officers. For more information regarding these agreements, see the section in this prospectus entitled “Executive and Director Compensation—Narrative Disclosure to Compensation Tables.”

Indemnification Agreements

We have entered into indemnification agreements with each of our directors and executive officers prior to the closing of this offering. These agreements, among other things, require us or will require us to indemnify each director (and in certain cases their related venture capital funds) and executive officer to the fullest extent permitted by Delaware law, including indemnification of expenses such as attorneys’ fees, judgments, fines and settlement amounts incurred by the director or executive officer in any action or proceeding, including any action or proceeding by or in right of us, arising out of the person’s services as a director or executive officer.

Our amended and restated certificate of incorporation and our amended and restated bylaws provide that we will indemnify each of our directors and officers to the fullest extent permitted by the Delaware General Corporation Law. Further, we have entered into indemnification agreements with each of our directors and officers, and we have purchased a policy of directors’ and officers’ liability insurance that insures our directors and officers against the cost of defense, settlement or payment of a judgment under certain circumstances. For further information, see “Executive and Director Compensation—Limitations of Liability and Indemnification Matters.”

Stock Option Grants to Executive Officers and Directors

We have granted stock options to our executive officers and certain of our directors as more fully described in the section entitled “Executive and Director Compensation.”

Policies and Procedures for Related Person Transactions

Our board of directors has adopted a written related person transaction policy, to be effective upon the consummation of this offering, setting forth the policies and procedures for the review and approval or ratification of related-person transactions. This policy will cover, with certain exceptions set forth in Item 404 of Regulation S-K under the Securities Act, any transaction, arrangement or relationship, or any series of similar transactions, arrangements or relationships in which we were or are to be a participant, where the amount involved exceeds $120,000 and a related person had or will have a direct or indirect material interest, including,

without limitation, purchases of goods or services by or from the related person or entities in which the related person has a material interest, indebtedness, guarantees of indebtedness and employment by us of a related person. In reviewing and approving any such transactions, our audit committee is tasked to consider all relevant facts and circumstances, including, but not limited to, whether the transaction is on terms comparable to those that could be obtained in an arm’s length transaction and the extent of the related person’s interest in the transaction. All of the transactions described in this section occurred prior to the adoption of this policy.

PRINCIPAL STOCKHOLDERS

The following table sets forth certain information with respect to the beneficial ownership of our commoncapital stock as of June 12, 2013, and as adjusted to reflect the saleSeptember 30, 2020 by:

each of shares of common stock in this offering, by:our directors;

 

each of our named executive officers;

each of our directors;

all of our current directors and executive officers and directors as a group; and

each person, or group of affiliated persons, known by us to beneficially own more than 5% of our common stock.

The numberBeneficial ownership has been determined in accordance with the rules of shares beneficially owned by each stockholderthe SEC and the information is determined under rules issued by the SEC. Under these rules, beneficial ownership includes any shares as to which a person has sole or shared voting power or investment power. Applicable percentage ownership is based on 76,190,081 shares of common stock outstanding on June 12, 2013, which gives effect to the conversion of all outstanding shares of convertible preferred stock into shares of common stockand the conversion of all outstanding warrants to purchase shares of our convertible preferred stock into warrants to purchase shares of our common stock. Our calculationnot necessarily indicative of beneficial ownership after the offering gives additional effect to (1) the issuance of                      shares of our common stock in connection with the completion of this offering as a result of the automatic conversion of the $1.0 million in aggregate principal amount of convertible promissory notes we issued in May 2013, or the 2013 Notes (including accrued interest thereon), assuming an initial public offering price of $                     per share (the midpoint of the price range listed on the cover page of this prospectus) and assuming the conversion occurs on                     , 2013 (the expected closing date of this offering), and (2) the issuance of                      shares of common stock as a result of the expected net exercise of outstanding warrants, or the 2010 Warrants, in connection with the completion of this offering, assuming an initial public offering price of $             ��       per share (the midpoint of the price range set forth on the cover page of this prospectus), which 2010 Warrants will terminate if unexercised prior to the completion of this offering. In computing the number of shares beneficially owned by a person and the percentage ownership of that person, shares of common stock subject to options, warrants or other rights held by such person that are currently exercisable or will become exercisable within 60 days of June 12, 2013 are considered outstanding, although these shares are not considered outstanding for purposes of computing the percentage ownership of any other person.

Entities affiliated with Aberdare Ventures, Advent Private Equity, Coöperative Gilde Healthcare II U.A., MPM Capital, Roche Finance Ltd, AgeChem Venture Fund L.P., Hale BioPharma Ventures LLC andpurpose. Unless otherwise indicated below, to our chief executive officer, each of which is a current stockholder, have indicated an interest in purchasing an aggregate of approximately $10.0 million of shares of our common stock in this offering. The information set forthknowledge, the persons or entities identified in the table below does not reflect the potential purchase of any shares in this offering by these stockholders.

Unless otherwise indicated, the address of each beneficial owner listed below is c/o Conatus Pharmaceuticals Inc., 4365 Executive Drive, Suite 200, San Diego, CA 92121. We believe, based on information provided to us, that each of the stockholders listed below hashave sole voting and sole investment power with respect to theall shares known as beneficially owned, by the stockholder unless noted otherwise, subject to community property laws where applicable.

  Shares Beneficially Owned
Prior to Offering
  Shares Beneficially Owned
After Offering
 

Name of Beneficial Owner

     Number          Percentage      Number Percentage 

5% or Greater Stockholders

    

Entities affiliated with Aberdare Ventures(1)

  17,876,902    23.3   %  

One Embarcadero Center, Suite 4000

    

San Francisco, CA 94111

    

Entities affiliated with Advent Private Equity(2)

  16,231,052    21.1   %  

25 Buckingham Gate

    

London, United Kingdom

    

SW1E 6LD

    

Coöperative Gilde Healthcare II U.A. (3)

  10,922,168    14.3   %  

Newtonlaan 91

    

P.O. Box 85067

    

3508 AB Utrecht

    

The Netherlands

    

Entities affiliated with MPM Capital(4)

  8,599,171    11.2   %  

c/o MPM Asset Management

    

200 Clarendon Street, 54th Floor

    

Boston, MA 02116

    

AgeChem Venture Fund L.P.(5)

  5,769,818    7.6   %  

1 Westmount Square, Suite 800

    

Montreal, Quebec H3Z 2P9

    

Canada

    

Entities affiliated with Roche Finance Ltd(6)

  5,123,938    6.7   %  

Roche Finance Ltd

Grenzacherstrasse 122

4070 Basel

Switzerland

    

Named Executive Officers and Directors

    

Steven J. Mento, Ph.D.(7)

  5,126,673    6.6   %  

Alfred P. Spada, Ph.D.(8)

  2,388,927    3.1  

Gary C. Burgess, M.B., Ch.B. M.Med.(9)

  1,000,000    1.3   %  

David F. Hale(10)

  1,365,836    1.8   %  

Paul H. Klingenstein(1)

  17,876,902    23.3   %  

Louis Lacasse(5)

  5,769,818    7.6  

Shahzad Malik, M.D.(2)

  16,231,052    21.1   %  

Marc Perret(3)

  10,922,168    14.3   %  

James Scopa(4)

  8,599,171    11.2   %  

Harold E. Van Wart, Ph.D.(11)

  250,000    *    

All executive officers and directors as a group (11 persons)(12)

  71,285,899    87.2   %  

Name and Address of Beneficial Owner

  Number of
Shares
Beneficially
Owned
   Percentage
of Shares
Beneficially
Owned(1)
 

5% Stockholders

    

Lordship Ventures(2)

   2,356,597    18.8

John Paul Dejoria(3)

   1,260,938    10.1

Directors and Executive Officers(4)

    

Jonathan Jackson(5)

   2,356,597    18.8

Gail K Naughton, Ph.D.(6)

   806,589    6.3

Hayden Yizhuo Zhang(7)

   600,983    4.8

Richard W. Pascoe(8)

   191,943    1.5

Steven J. Mento(9)

   117,866    * 

Martin Latterich(10)

   54,977    * 

David H. Crean, Ph.D.(11)

   54,383    * 

Stephen Chang, Ph.D.(12)

   52,733    * 

Brian Satz(13)

   32,810    * 

Daniel L. Kisner, M.D.(14)

   13,446   

All current directors and executive officers as a group (12 person)(15)

   4,282,327    34.0

 

*

Less than 1%.one percent.

(1)

Includes (a) 16,817,922Percentage ownership is calculated based on 12,509,355 shares of our common stock 605,513 shares of common stock issuable upon the exercise of warrants and 42,336 shares of common stock issuable upon the exercise of 2013 Warrants held by Aberdare Ventures III, L.P., and (b) 395,881 shares of common stock, 14,253 shares of common stock issuable upon the exercise of 2010 Warrants and 997 shares of common stock issuable upon the exercise of 2013 Warrants held by Aberdare Partners III, L.P. In addition, beneficial ownership after the offering gives additional effect to the issuance of                     and                     shares of common stock as a result of the

expected net exercise of the 2010 Warrants held by Aberdare Ventures III, L.P. and Aberdare Partners III, L.P., respectively, in connection with the completion of this offering, assuming an initial public offering price of $                     per share (the midpoint of the price range set forthoutstanding on the cover page of this prospectus). Mr. Klingenstein serves as Manager of Aberdare GP III, L.L.C., the general partner of Aberdare Ventures III, L.P. and Aberdare Partners III, L.P. Aberdare GP III, L.L.C. owns no shares directly. Mr. Klingenstein shares voting and investment control over the shares owned by Aberdare Ventures III, L.P. and Aberdare Partners III, L.P., and may be deemed to beneficially own such shares. Mr. Klingenstein disclaims beneficial ownership of the shares held by Aberdare Ventures III, L.P. and Aberdare Partners III, L.P., except to the extent of his pecuniary interest therein.September 30, 2020.

(2)

Includes (a) 5,551,195Represents shares of our common stock beneficially owned by Lordship Ventures. Consists of shares of common stock.

(3)

Represents shares of our common stock beneficially owned by John Paul Dejoria. Consists of shares of common stock. Mr. Dejoria holds 119,516 shares of his common stock in the John Paul DeJoria Family Trust. Mr. Dejoria is the Trustee of John Paul DeJoria Family Trust.

(4)

Unless otherwise indicated, the address for each of our executive officers and directors is c/o 10655 Sorrento Valley Road, Ste 200, San Diego, California, 92121.

(5)

Mr. Jackson is Chairman of Lordship Ventures and has beneficial ownership over our securities owned by Lordship. Consists of shares of common stock.

(6)

Consists of 426,526 shares of common stock, 205,845which are owned by the Gail K. Naughton Revocable Trust, dated January 19, 2018, and 380,063 shares of common stock issuable upon the exercise of 2010 Warrants and 27,322 sharesstock options exercisable within 60 days of common stock issuable uponSeptember 30, 2020. Dr. Naughton is the exercise of 2013 Warrants held by Advent Private Equity Fund III ‘A’, (b) 2,720,121 shares of common stock, 100,865 shares of common stock issuable upon the exercise of 2010 Warrants and 13,388 shares of common stock issuable upon the exercise of 2013 Warrants held by Advent Private Equity Fund III ‘B’, (c) 758,770 shares of common stock, 28,135 shares of common stock issuable upon the exercise of 2010 Warrants and 3,735 shares of common stock issuable upon the exercise of 2013 Warrants held by Advent Private Equity Fund III ‘C’, (d) 1,492,488 shares of common stock, 55,342 shares of common stock issuable upon the exercise of 2010 Warrants and 7,346 shares of common stock issuable upon the exercise of 2013 Warrants held by Advent Private Equity Fund III ‘D’, (e) 214,746 shares of common stock, 7,962 shares of common stock issuable upon the exercise of 2010 Warrants and 1,057 shares of common stock issuable upon the exercise of 2013 Warrants held by Advent Private Equity Fund III GmbH & Co KG, (f) 178,955 shares of common stock, 6,635 shares of common stock issuable upon the exercise of 2010 Warrants and 881 shares of common stock issuable upon the exercise of 2013 Warrants held by Advent Private Equity Fund III Affiliates, (g) 53,687 shares of common stock, 1,990 shares of common stock issuable upon the exercise of 2010 Warrants and 264 shares of common stock issuable upon the exercise of 2013 Warrants held by Advent Management III Limited Partnership, (h) 4,561,213 shares of common stock, 169,135 shares of common stock issuable upon the exercise of 2010 Warrants and 22,450 shares of common stock issuable upon the exercise of 2013 Warrants held by Advent Private Equity Fund IV, and (i) 45,611 shares of common stock, 1,690 shares of common stock issuable upon the exercise of 2010 Warrants and 224 shares of common stock issuable upon the exercise of 2013 Warrants held by Advent Management IV Limited Partnership. In addition, beneficial ownership after the offering gives additional effect to the issuance of                     ,                     ,                     ,                     ,                     ,                     ,                     ,             and                      shares of common stock as a resultTrustee of the expected net exerciseGail K. Naughton Revocable Trust, dated January 19, 2018.

(7)

Hayden Yizhuo Zhang is the Investment Director of the 2010 Warrants held by Advent Private Equity Fund III ‘A’, Advent Private Equity Fund III ‘B’, Advent Private Equity Fund III ‘C’, Advent Private Equity Fund III ‘D’, Advent Private Equity Fund III GmbH & Co KG, Advent Private Equity Fund III Affiliates, Advent Management III Limited Partnership, Advent Private Equity Fund IV and Advent Management IV Limited Partnership, respectively, in connection with the completion of this offering, assuming an initial public offering price of $                     per share (the midpoint of the price range set forth on the cover page of this prospectus). Advent Venture Partners LLP owns 100% of Advent Management III Limited, which is General Partner of Advent Management III Limited Partnership, which is General Partner of each of Advent Private Equity Fund III “A”, Advent Private Equity Fund III “B”, Advent Private Equity Fund III “C”, Advent Private Equity Fund III “D” and Advent Private Equity Fund III Affiliates. Advent Venture Partners LLP also owns 100% of AdventPineworld Capital Limited and Advent Private Equity Fund IV. Advent Limited owns 100% of Advent Private Equity GmbH, which is General Partner of Advent Private Equity Fund III GmbH & Co. KG. Voting and investmenthas voting power over the shares held by each named fund may be deemed to be shared with Advent Venture Partners LLP due to the affiliate relationship described above. Each named fund disclaims beneficial ownershipPineworld. Consists of the others’ shares. Dr. Malik is a general partner of Advent Venture Partners LLP and shares voting and investment power over the shares, and disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

(3)

Includes 10,384,529 shares of common stock, 385,070 shares of common stock issuable upon the exercise of 2010 Warrants and 222,569 shares of common stock issuable upon the exercise of 2013 Warrants. The manager of Coöperative Gilde Healthcare II U.A. is Gilde Healthcare II Management B.V., which isstock.

footnotes continued on following page

(8)

indirectly owned by three managing partners, Edwin de Graaf, Marc Olivier Perret and Martenmanshurk B.V. (of which Pieter van der Meer is the owner and manager), through a holding entity, Gilde Healthcare Holding B.V. Gilde Healthcare Holding B.V. is owned in equal thirds by the three managing partners. EachConsists of Edwin de Graaf, Marc Olivier Perret and Pieter van der Meer share voting and dispositive power of the shares, and disclaim beneficial ownership of the shares except to the extent of their respective pecuniary interest therein.

(4)

Includes (a) 3,905,17010,000 shares of common stock and 124,577181,943 shares of common stock issuable upon the exercise of 2013 Warrants held by MPM BioVentures IV-QP, L.P., (b) 150,450stock options exercisable within 60 days of September 30, 2020.

(9)

Consists of 39,456 shares issuable upon exercise of stock options exercisable within 60 days of September 30, 2020.

(10)

Consists of 11,951 shares of common stock and 4,79943,026 shares of common stock issuable upon the exercise of 2013 Warrants held by MPM BioVentures IV GmbH & Co. Beteiligungs KG, (c) 111,047stock options exercisable within 60 days of September 30, 2020.

(11)

Consists of 54,383 shares of common stock held and 3,542 shares of common stock issuable upon the exercise of 2013 Warrants by MPM Asset Management Investors BV4 LLC, (d) 4,010,853stock options exercisable within 60 days of September 30, 2020.

(12)

Consists of 14,485 shares of common stock and 127,94838,248 shares of common stock issuable upon the exercise of 2013 Warrants held by MPM BioVentures V, L.P. and (e) 155,814stock options exercisable within 60 days of September 30, 2020.

(13)

Consists of 1,434 shares of common stock and 4,97131,376 shares of common stock issuable upon the exercise of 2013 Warrants held by MPM Asset Management Investors BV5 LLC. MPM BioVentures IV GP LLC is the General Partner of MPM BioVentures IV-QP, L.P. and Managing Limited Partner of MPM BioVentures IV GmbH & Co. Beteiligungs KG. MPM BioVentures IV LLC is the Managing Member of MPM BioVentures IV GP LLC and the Manager of MPM Asset Management Investors BV4 LLC. The Members of MPM BioVentures IV LLC share voting and investment power of the shares. MPM BioVentures V GP LLC is the General Partner of MPM Bioventures V, L.P. MPM BioVentures V LLC is the Managing Member of MPM BioVentures V GP LLC and the Manager of MPM Asset Management Investors BV5 LLC. The Members of MPM BioVentures V LLC share voting and investment power of the shares. Luke Evnin, Todd Foley, Ansbert Gadicke, Vaughn Kailian, James Scopa and John Vander Vort are the Members of MPM BioVentures IV LLC and MPM BioVentures V LLC and have shared power to vote, hold and dispose of the shares beneficially held by the entities. Each disclaims beneficial ownership of the shares except to the extent of his respective pecuniary interest therein.

(5)

The general partner of AgeChem Venture Fund, L.P. is AgeChem FinancialInc., for which Mr. Lacasse serves as President. Mr. Lacasse disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.

(6)

Includes (a) 4,509,702 shares of common stock 173,281 shares of common stock issuable upon the exercise of 2010 Warrants and 277,622 shares of common stock issuable upon the exercise of 2013 Warrants held by Roche Finance Ltd and (b) 163,333 shares of common stock held by Roche Holdings, Inc. Roche Holdings, Inc. is an indirect wholly-owned subsidiary of Roche Holding Ltd.

(7)

Includes (a) 610,000 shares Dr. Mento acquired upon the early exercise of options 522,500 of which are subject to our right of repurchaseexercisable within 60 days of June 12, 2013 (b) 2,050,000September 30, 2020.

(14)

Includes 12,500 shares Dr. Mento has the right to acquire pursuant to outstandingissuable upon exercise of stock options which are immediately exercisable none of which would be subject to our right of repurchase within 60 days of June 12, 2013 and (c) 20,256 shares of common stock issuable upon the exercise of 2013 Warrants. 3,076,673 of the shares are held by family trusts, of which Dr. Mento is a trustee.September 30, 2020.

(8)(15)

Includes (a) 250,000780,995 shares Dr. Spada acquiredissuable upon the early exercise of stock options 208,333 of which are subject to our right of repurchaseexercisable within 60 days of June 12, 2013 and (b) 450,000 shares Dr. Spada has the right to acquire pursuant to outstanding options which are immediately exercisable, none of which would be subject to our right of repurchase within 60 days of June 12, 2013. 1,938,927 of the shares are held by a family trust, of which Dr. Spada is a trustee.September 30, 2020.

CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

Lordship

Lordship, with its predecessor entities along with Jonathan Jackson, have invested and been affiliated with Private Histogen since 2010. At December 31, 2017 and 2016, Lordship controlled approximately 25% and 26% of the voting shares, respectively, and controlled two Board of Director seats on the five-person Board.

Histogen and Lordship are party to a Strategic Relationship Success Fee Agreement that, as amended provides for certain payments to be made from Histogen to Lordship equal to 1% of certain product revenue and 10% of certain royalty revenue. For more information regarding this, arrangement see “Success Fee Agreement with Lordship.”

On January 7, 2019 Histogen reached the $10 million accumulated investment threshold stipulated in the Letter Agreement and settled its obligation to Proteus. Histogen paid $250 thousand immediately and deferred $50 thousand in the form of a simple interest-bearing note which was paid September 2019. The result of the settlement with Proteus triggered the obligation to issue additional shares to Lordship under the Indemnification Agreement. Histogen issued 152,594 shares of common stock and 114,445 shares of Series B convertible preferred stock to settle its obligation to Lordship. Histogen considers all matters related to the Indemnification Agreement to be resolved.

In addition, Lordship participated in the Series D investment transaction with Private Histogen.

Dr. Naughton

Dr. Naughton is the founder and as of March 2, 2020, held approximately 5.1% of the voting shares of Histogen. Dr. Naughton had served as the Chief Executive Officer and Board Chairwoman of Histogen from its inception until her resignation from both positions in April 2017. At her resignation date, she transitioned to the title of Founder and CSO and later in 2017 added another title of Chief Business Development Officer to her roles.

In October 2019, Histogen paid Dr. Naughton approximately $9 thousand in principal in accrued interest related to a bridge loan that was provided to AB in prior years. As of December 31, 2019, no further amounts were owed to Dr. Naughton.

Support Agreement

In connection with the merger and in accordance with the terms of the Merger Agreement, Private Histogen also entered into a support agreement, with each of its executive officers and directors, as well as certain significant stockholders, including Lordship.

PLAN OF DISTRIBUTION

Pursuant to an engagement agreement, dated as of December 28, 2020, we have engaged H.C. Wainwright & Co., LLC, or the placement agent, to act as our exclusive placement agent to solicit offers to purchase the securities offered pursuant to this prospectus on a reasonable best efforts basis. The engagement agreement does not give rise to any commitment by the placement agent to purchase any of our securities, and the placement agent will have no authority to bind us by virtue of the engagement agreement. The placement agent is not purchasing or selling any of the securities offered by us under this prospectus, nor is it required to arrange for the purchase or sale of any specific number or dollar amount of securities, other than to use their “reasonable best efforts” to arrange for the sale of the securities by us. Therefore, we may not sell the entire amount of securities being offered. The placement agent does not guarantee that it will be able to raise new capital in any prospective offering. The placement agent may engage sub-agents or selected dealers to assist with the offering.

We will enter into a securities purchase agreement directly with certain institutional investors, at such investor’s option, which purchase our securities in this offering. Investors that do not enter into a securities purchase agreement shall rely solely on this prospectus in connection with the purchase of our securities in this offering. There is no minimum number of securities or amount of proceeds that is a condition to closing of this offering.

We expect to deliver the securities being offered pursuant to this prospectus on or about                , 2021.

Fees and Expenses

The following table shows the per share and accompanying warrant, and per pre-funded and accompanying warrant, and total placement agent fees we will pay in connection with the sale of the securities in this offering.

(9)

Includes 1,000,000 shares Dr. Burgess acquired upon the early exercise of options, 671,875 of which are subject to our right of repurchase within 60 days of June 12, 2013.

(10)

Includes 200,000 shares Mr. Hale has the right to acquire pursuant to outstanding options which are immediately exercisable, none of which would be subject to our right of repurchase within 60 days of June 12, 2013, and 3,480 shares of common stock issuable upon the exercise of 2013 Warrants held by Hale BioPharma Ventures, LLC of which Mr. Hale serves as CEO. 1,065,836 of the shares are held by Hale BioPharma Ventures, LLC and 100,000 shares held by Hale Trading Company, LP, of which Mr. Hale is a

 

General Partner. Mr. Hale holds sole voting

Per Share and investment power with respect to the shares held by these entities.Accompanying
Warrant
Per Pre-Funded Warrant and
Accompanying Warrant

Placement Agent Fees

$$

Total

$$
(11)

Includes 250,000 shares Dr. Van Wart has the right to acquire pursuant to outstanding options which are immediately exercisable, none of which would be subject to our right of repurchase within 60 days of June 12, 2013.

(12)

Includes shares of common stock issuable upon the exercise of 2010 Warrants and 2013 Warrants, shares of common stock issued upon the early exercise of options, and shares of common stock issuable upon the exercise of outstanding options which are immediately exercisable, as set forth in previous footnotes (other than footnote 6)

We have agreed to pay the placement agent a cash fee equal to 7.0% of the gross proceeds raised in this offering and a management fee of 1.0% of the gross proceeds raised in this offering. In addition, we have agreed to pay the placement agent, $50,000 in non-accountable expenses, and other actual out-of-pocket expenses, including legal fees and expenses, in an amount up to $90,000 and its clearing expenses in the amount of $12,900. We estimate the total offering expenses of this offering that will be payable by us, excluding the placement agent fees and expenses, will be approximately $            . After deducting the placement agent fees and our estimated offering expenses, we expect the net proceeds from this offering to be approximately $                .

Placement Agent Warrants

In addition, we have agreed to issue to the placement agent or its designees warrants to purchase up to 521,739 shares of common stock (which represents 5.0% of the aggregate number of shares of common stock issued and sold in this offering and issuable upon the exercise of the common warrants and pre-funded warrants issued and sold in this offering) with an exercise price of $                per share (representing 125% of the public offering price per share or pre-funded warrant, and accompanying common warrant) and exercisable for five years from the date of the commencement of sales in this offering. The placement agent warrants are registered on the registration statement of which this prospectus is a part. The form of the placement agent warrant will be included as an exhibit to this registration statement of which this prospectus forms a part.

Tail

We have also agreed to pay the placement agent a tail fee equal to the cash and warrant compensation in this offering, if any investor, who was contacted or introduced to us by the placement agent during the term of its engagement, provides us with capital in any public or private offering or other financing or capital raising transaction during the 10-month period following expiration or termination of our engagement of the placement agent.

Lock-up Agreements

We and each of our officers and directors have agreed with the placement agent to be subject to a lock-up period of 90 days following the date of closing of the offering pursuant to this prospectus. This means that, during the applicable lock-up period, we and such persons may not offer for sale, contract to sell, sell, distribute, grant any option, right or warrant to purchase, pledge, hypothecate or otherwise dispose of, directly or indirectly, any of our shares of common stock or any securities convertible into, or exercisable or exchangeable for, shares of common stock, subject to customary exceptions. The placement agent may waive the terms of these lock-up agreements in its sole discretion and without notice. In addition, we have agreed to not issue any securities that are subject to a price reset based on the trading prices of our common stock or upon a specified or contingent event in the future, or enter into any agreement to issue securities at a future determined price for a period of two years following the closing date of this offering, subject to an exception. The placement agent may waive this prohibition in its sole discretion and without notice.

Regulation M

The placement agent may be deemed to be an underwriter within the meaning of Section 2(a)(11) of the Securities Act, and any commissions received by it and any profit realized on the resale of the securities sold by it while acting as principal might be deemed to be underwriting discounts or commissions under the Securities Act. As an underwriter, the placement agent would be required to comply with the requirements of the Securities Act and the Exchange Act, including, without limitation, Rule 10b-5 and Regulation M under the Exchange Act. These rules and regulations may limit the timing of purchases and sales of our securities by the placement agent acting as principal. Under these rules and regulations, the placement agent (i) may not engage in any stabilization activity in connection with our securities and (ii) may not bid for or purchase any of our securities or attempt to induce any person to purchase any of our securities, other than as permitted under the Exchange Act, until it has completed its participation in the distribution.

Indemnification

We have agreed to indemnify the placement agent against certain liabilities, including certain liabilities arising under the Securities Act, or to contribute to payments that the placement agent may be required to make for these liabilities.

Determination of Public Offering Price and Warrant Exercise Price

The actual public offering price of the securities we are offering has been negotiated between us and the investors in the offering based on the trading of our shares of common stock prior to the offering, among other things. Other factors considered in determining the public offering price of the securities we are offering include our history and prospects, the stage of development of our business, our business plans for the future and the extent to which they have been implemented, an assessment of our management, the general conditions of the securities markets at the time of the offering and such other factors as were deemed relevant.

Electronic Offer, Sale and Distribution of Securities

A prospectus in electronic format may be made available on the websites maintained by the placement agent, if any, participating in this offering and the placement agent may distribute prospectuses electronically. Other than the prospectus in electronic format, the information on these websites is not part of this prospectus or the registration statement of which this prospectus forms a part, has not been approved or endorsed by us or the placement agent, and should not be relied upon by investors.

Other Relationships

From time to time, the placement agent or its affiliates have in the past or may in the future provide in the future, various advisory, investment and commercial banking and other services to us in the ordinary course of business, for which they have received and may continue to receive customary fees and commissions. The placement agent acted as our exclusive placement agent in connection with our registered direct offerings we consummated in November 2020, for which it received compensation. However, except as disclosed in this prospectus, we have no present arrangements with the placement agent for any further services.

Listing

Our shares of common stock are listed on The Nasdaq Capital Market under the symbol “HSTO.”

DESCRIPTION OF CAPITAL STOCKSECURITIES

General

Following the closing of this offering, our authorized capital stock will consist of 200,000,000 shares of common stock, par value $0.0001 per share, and 10,000,000 shares of preferred stock, par value $0.0001 per share. The following description summarizes some of the terms of our amendedcapital stock is not complete and restated certificate of incorporation and amended and restated bylaws, our outstanding warrants, the investors’ rights agreement and of the Delaware General Corporation Law. Because it is only a summary, it doesmay not contain all the information that may be important to you. For a complete description you should refer toconsider before investing in our amendedcapital stock. This description is summarized from, and restated certificate of incorporation, amended and restated bylaws, warrants and investors’ rights agreement, copies of which have been filed or incorporatedqualified in its entirety by reference as exhibits to, the registration statement of which the prospectus is a part, as well as the relevant provisions of the Delaware General Corporation Law.

Common Stock

As of March 31, 2013, there were                      shares of our common stock outstanding and held of record by 54 stockholders, assuming (1) the automatic conversion of all outstanding shares of our convertible preferred stock into shares of common stock, which we expect to automatically occur immediately prior to the closing of this offering, and (2) the issuance of                      shares of common stock as a result of the expected net exercise of outstanding warrants, or the 2010 Warrants, in connection with the completion of this offering, assuming an initial public offering price of $ per share (the midpoint of the price range listed on the cover page of this prospectus), which 2010 Warrants will terminate if unexercised prior to the completion of this offering. Under the terms of ourConatus’ amended and restated certificate of incorporation, which will become effective immediately prior tohas been publicly filed with the closingSEC. See “Where You Can Find More Information; Incorporation by Reference.”

Our authorized capital stock consists of:

200,000,000 shares of this offering,common stock, $0.0001 par value, of which 15,030,757 shares have been issued and are outstanding as of December 28, 2020; and

10,000,000 shares of preferred stock, $0.0001 par value, of which no shares have been issued and are outstanding as of December 28, 2020.

Common Stock

The holders of shares of our common stock are entitled to one vote for eachper share held on all matters submitted to a vote ofbe voted upon by our stockholders including the election of directors, and do not havethere are no cumulative voting rights. Accordingly, the holders of a majority of the outstanding shares of common stock entitled to vote in any election of directors can elect all of the directors standing for election, if they so choose, other than any directors that holders of any preferred stock we may issue may be entitled to elect. Subject to preferences that may be applicable to any then outstanding preferred stock, the holders shares of our common stock are entitled to receive ratably thoseany dividends if any, asthat may be declared from time to time by theour board of directors out of funds legally available funds.for that purpose. In the event of our liquidation, dissolution or winding up, the holders of shares of our common stock will beare entitled to share ratably in theall assets legally available for distribution to stockholdersremaining after the payment of or provision for all of our debts and other liabilities, subject to the prior distribution rights of any preferred stock then outstanding. Holders ofour common stock havehas no preemptive or conversion rights or other subscription rights and thererights. There are no redemption or sinking fundsfund provisions applicable to theour common stock. AllThe outstanding shares of our common stock are fully paid and thenon-assessable, and any shares of our common stock to be outstandingissued upon completion ofan offering pursuant to this offeringprospectus will be duly authorized, validly issued, fully paid and nonassessable. nonassessable upon issuance.

Transfer Agent

The rights, preferencestransfer agent and privileges of holders ofregistrar our common stock are subject tois American Stock Transfer & Trust Company, LLC. Its address is 6201 15th Avenue, Brooklyn, NY 11219.

Dividend

We have never paid cash dividends on our common stock. Moreover, we do not anticipate paying periodic cash dividends on its common stock for the foreseeable future. Any future determination about the payment of dividends will be made at the discretion of our board of directors and may be adversely affected bywill depend upon its earnings, if any, capital requirements, operating and financial conditions and on such other factors as our board of directors deems relevant.

Preferred Stock

The following description of our preferred stock and the rightsdescription of the holders of sharesterms of any particular series of our preferred stock that we may designatechoose to issue hereunder are not complete. These descriptions are qualified in their entirety by reference to our amended and issue inrestated certificate of incorporation and the future.

Preferred Stock

Upon completioncertificate of this offering, alldesignation, if and when adopted by our board of our previously outstanding sharesdirectors, relating to that series. The rights, preferences, privileges and restrictions of convertiblethe preferred will have been converted into common stock thereof each series will be no authorized sharesfixed by the certificate of our previously convertible preferred stock and we willdesignation relating to that series.

We currently have no shares of preferred stock outstanding. Under the terms of our amended and restated certificate of incorporation, which will become effective immediately prior to the closing of this offering, ourOur board of directors has the authority, without further action by ourthe stockholders, to issue up to 10,000,000 shares of preferred stock in one or more series to establish from time to time the number of shares to be included in each such series,and to fix the dividend, voting and other rights, preferences, privileges and privilegesrestrictions granted to or imposed upon the preferred stock. Any or all of these rights may be greater than the sharesrights of each wholly unissued series and any qualifications, limitations or restrictions thereon, and to increase or decrease the number of shares of any such series, but not below the number of shares of such series then outstanding.our common stock.

Our board of directors, may authorize the issuance ofwithout stockholder approval, can issue preferred stock with voting, conversion or conversionother rights that could adverselynegatively affect the voting power or other rights of the holders of the common stock. The issuance of preferred stock, while providing flexibility in connection with possible acquisitions and other corporate purposes,

could, among other things, have the effect of delaying, deferring or preventing a change in our control and may adversely affect the market price of the common stock and the voting and other rights of the holders of our common stock. We have no current plansPreferred stock could thus be issued quickly with terms calculated to issue any shares of preferred stock.

Options

As of March 31, 2013, options to purchase 4,899,000 shares of our common stock were outstanding under our 2006 equity incentive plan, of which 4,319,833 were vested and all of which were exercisable as of that date.

Warrants

In March and October 2010,delay or prevent a change in connection with closings under our 2010 convertible note and warrant financing, we issued the 2010 Warrants to investors exercisable for an aggregate of 2,333,320 shares of our Series A convertible preferred stock at an exercise price of $0.01 per share. The 2010 Warrants contain a net exercise provision under which the holders may, in lieu of payment of the exercise price in cash, surrender the warrant and receive, a net amount of shares of our common stock based on the fair market value of our common stock at the time of the net exercise of the warrant after deduction of the aggregate exercise price. The 2010 Warrants expire ten years from their date of issuance, subject to their earlier termination upon the completion of this offering and certain mergers, acquisitions and similar transactions. We expect the 2010 Warrants to be net exercised in connection with the completion of this offering, resulting in the issuance of an aggregate of                      shares of common stock assuming an initial public offering price of $                     per share (the midpoint of the price range set forth on the cover page of this prospectus). If these 2010 Warrants are not exercised prior to the completion of this offering, they will terminate.

In May 2013, in connection with the closing of our 2013 convertible note and warrant financing, we issued the 2013 Warrants to investors exercisable for an aggregate of 1,124,026 shares of our Series B convertible preferred stock at an exercise price of $0.90 per share. In connection with the completion of this offering, the 2013 Warrants will become exercisable for an aggregate of                      shares of common stock, at an exercise price of $                     per share. The 2013 Warrants will expire on May 30, 2018.

Registration Rights

As of June 12, 2013, holders of                      shares of our common stock, which includes all of the shares of common stock issuable upon the automatic conversion of our convertible preferred stock immediately prior to the closing of this offering,              shares of common stock issuable as a result of the expected net exercise of the 2010 Warrants in connection with the completion of this offering, assuming an initial public offering price of $                     per share (the midpoint of the price range listed on the cover page of this prospectus),              shares of common stock issuable in connection with the completion of this offering as a result of the automatic conversion of the $1.0 million in aggregate principal amount of 2013 Notes (including accrued interest thereon), assuming an initial public offering price of $         per share (the midpoint of the price range listed on the cover page of this prospectus) and assuming the conversion occurs on                 , 2013 (the expected closing date of this offering), and              shares of common stock issuable upon the exercise of the 2013 Warrants,control or their transferees will be entitled to the following rights with respect to the registration of such shares for public resale under the Securities Act, pursuant to an investor rights agreement by and among us and certain of our stockholders. The registration of shares of common stock as a result of the following rights being exercised would enable holders to trade these shares without restriction under the Securities Act when the applicable registration statement is declared effective.

Demand Registration Rights

If at any time beginning six months after this offering the holders of at least 30% of the registrable securities request in writing that we effect a registration with respect at least 30% of the registrable securities then outstanding or a lesser percentage if shares in an offering with an anticipated aggregate offering price of at least $5.0 million, we may be required to register their shares. We are obligated to effect at most two registrations in any 12-month period for the holders of registrable securities in response to these demand registration rights. If

the holders requesting registration intend to distribute their shares by means of an underwriting, the managing underwriter of such offering will have the right to limit the numbers of shares to be underwritten for reasons related to the marketing of the shares.

Piggyback Registration Rights

If at any time after this offering we propose to register any shares of our common stock under the Securities Act, subject to certain exceptions, the holders of registrable securities will be entitled to notice of the registration and to include their shares of registrable securities in the registration. If our proposed registration involves an underwriting, the managing underwriter of such offering will have the right to limit the number of shares to be underwritten for reasons related to the marketing of the shares.

Form S-3 Registration Rights

If at any time after we become entitled under the Securities Act to register our shares on Form S-3 a holder of registrable securities requests in writing that we register their shares for public resale on Form S-3 and the reasonably anticipated price to the public of the offering is $1.0 million or more, we will be required to use our best efforts to effect such registration; provided, however, that we will not be required to effect such a registration if, within the preceding 12 months, we have already effected two registrations on Form S-3 for the holders of registrable securities.

Expenses

Ordinarily, other than underwriting discounts and commissions, we will be required to pay all expenses incurred by us related to any registration effected pursuant to the exercise of these registration rights. These expenses may include all registration and filing fees, printing expenses, fees and disbursements of our counsel, reasonable fees and disbursements of a counsel for the selling securityholders, blue sky fees and expenses and the expenses of any special audits incident to the registration.

Termination of Registration Rights

The registration rights terminate upon the earlier of seven years after the effective date of the registration statement of which this prospectus is a part, or, with respect to the registration rights of an individual holder, when the holder can sell all of such holder’s registrable securities in a three-month period in compliance with Rule 144 of the Securities Act.

Anti-Takeover Effects of Delaware Law and Our Certificate of Incorporation and Bylaws

Some provisions of Delaware law, our amended and restated certificate of incorporation and our amended and restated bylaws contain provisions that could make the following transactions more difficult: an acquisition of us by means of a tender offer; an acquisition of us by means of a proxy contest or otherwise; or the removal of our incumbent officers and directors. It is possible that these provisions could make it more difficult to accomplish or could deter transactions that stockholders may otherwise consider to be in their best interest or inremove our best interests, including transactions which provide for paymentmanagement. Additionally, the issuance of a premium over the market price for our shares.

These provisions, summarized below, are intended to discourage coercive takeover practices and inadequate takeover bids. These provisions are also designed to encourage persons seeking to acquire control of us to first negotiate with our board of directors. We believe that the benefits of the increased protection of our potential ability to negotiate with the proponent of an unfriendly or unsolicited proposal to acquire or restructure us outweigh the disadvantages of discouraging these proposals because negotiation of these proposals could result in an improvement of their terms.

Undesignated Preferred Stock

The ability of our board of directors, without action by the stockholders, to issue up to 10,000,000 shares of undesignated preferred stock with voting or other rights or preferences as designated by our board of directors could impede the success of any attempt to change control of us. These and other provisions may have the effect of deferring hostile takeovers or delaying changes in control or managementdecreasing the market price of our company.

Stockholder Meetingscommon stock.

Our amended and restated bylaws provide that a special meetingboard of stockholdersdirectors may be called only by our chairmanspecify the following characteristics of any preferred stock:

the maximum number of shares;

the designation of the board, chief executive officershares;

the annual dividend rate, if any, whether the dividend rate is fixed or president,variable, the date or by a resolution adopted by a majority of our board of directors.

Requirements for Advance Notification of Stockholder Nominationsdates on which dividends will accrue, the dividend payment dates, and Proposals

Our amended and restated bylaws establish advance notice procedures with respect to stockholder proposals towhether dividends will be brought before a stockholder meetingcumulative;

the price and the nominationterms and conditions for redemption, if any, including redemption at the option of candidates for election as directors, other than nominations made byus or at the directionoption of the boardholders, including the time period for redemption, and any accumulated dividends or premiums;

the liquidation preference, if any, and any accumulated dividends upon the liquidation, dissolution or winding up of directorsour affairs;

any sinking fund or a committeesimilar provision, and, if so, the terms and provisions relating to the purpose and operation of the boardfund;

the terms and conditions, if any, for conversion or exchange of directors.shares of any other class or classes of our capital stock or any series of any other class or classes, or of any other series of the same class, or any other securities or assets, including the price or the rate of conversion or exchange and the method, if any, of adjustment;

the voting rights; and

any or all other preferences and relative, participating, optional or other special rights, privileges or qualifications, limitations or restrictions.

Any preferred stock issued will be fully paid and nonassessable upon issuance.

EliminationAnti-Takeover Effects of Stockholder Action by Written ConsentProvisions of Histogen Charter Documents

Our amended and restated certificate of incorporation and amended and restated bylaws eliminate the right of stockholders to act by written consent without a meeting.

Staggered Board

Ourprovides for our board of directors isto be divided into three classes.classes serving staggered terms. Approximately one-third of the board of directors will be elected each year. The directors in each class will serveprovision for a three-year term, one class being elected each year by our stockholders. For more information on the classified board see “Management—Board Composition and Electioncould prevent a party who acquires control of Directors.” This systema majority of electing and removingour outstanding voting stock from obtaining control of our board of directors may tend tountil the second annual stockholders meeting following the date the acquirer obtains the controlling stock interest. The classified board provision could discourage a third-partypotential acquirer from making a tender offer or otherwise attempting to obtain control of us because it generally makes it more difficultand could increase the likelihood that incumbent directors will retain their positions. Our amended and restated certificate of incorporation provides that directors may be removed only for stockholders to replace a majoritycause by the affirmative vote of the directors.

Removalholders of Directorsat least two-thirds of the voting power of the outstanding shares of our capital stock entitled to vote thereon.

Our amended and restated certificate of incorporation provides that no membercertain amendments of our boardcertificate of directors may be removed from officeincorporation and amendments by ourthe stockholders except for cause and, in addition to any other vote required by law, upon the approval of not less than 66 23% of the total voting power of all of our outstanding voting stock then entitled to vote in the election of directors.

Stockholders Not Entitled to Cumulative Voting

Our amended and restated certificatebylaws require the affirmative vote of incorporation does not permit stockholders to cumulate their votes in the election of directors. Accordingly, the holders of a majorityat least two-thirds in voting power of the outstanding shares of our commoncapital stock entitled to vote thereto. These provisions could discourage a potential acquirer from making a tender offer or otherwise attempting to obtain control of us and could delay changes in anymanagement. Our amended and restated bylaws establish an advance notice procedure

for stockholder proposals to be brought before an annual meeting of our stockholders, including proposed nominations of persons for election to our board of directors. At an annual meeting, stockholders may only consider proposals or nominations specified in the notice of meeting or brought before the meeting by or at the direction of our board of directors. Stockholders may also consider a proposal or nomination by a person who was a stockholder at the time of giving notice and at the time of the meeting, who is entitled to vote at the meeting and who has complied with the notice requirements of our amended and restated bylaws in all respects. The amended and restated bylaws do not give our board of directors canthe power to approve or disapprove stockholder nominations of candidates or proposals regarding other business to be conducted at a special or annual meeting of our stockholders. However, our amended and restated bylaws may have the effect of precluding the conduct of business at a meeting if the proper procedures are not followed. These provisions may also discourage or deter a potential acquirer from conducting a solicitation of proxies to elect allthe acquirer’s own slate of directors or otherwise attempting to obtain control of us.

Our amended and restated bylaws provide that a special meeting of our stockholders may be called only by the board of directors, chairperson of the directors standing for election, if they choose,board, chief executive officer or president (in the absence of a chief executive officer), but such special meetings may not be called by any other than any directors that holdersperson or persons. Because our stockholders do not have the right to call a special meeting, a stockholder could not force stockholder consideration of a proposal over the opposition of our preferredboard of directors by calling a special meeting of stockholders prior to such time as a majority of our board of directors, the chairperson of our board of directors, the president or the chief executive officer believed the matter should be considered or until the next annual meeting, provided that the requestor met the notice requirements. The restriction on the ability of stockholders to call a special meeting means that a proposal to replace our board of directors also could be delayed until the next annual meeting.

Our amended and restated bylaws do not allow our stockholders to act by written consent without a meeting. Without the availability of stockholder action by written consent, a holder controlling a majority of our capital stock maywould not be entitledable to elect.amend our amended and restated bylaws or remove directors without holding a stockholders’ meeting.

Anti-Takeover Effects of Delaware Anti-Takeover StatuteLaw

We areConatus is subject to the provisions of Section 203 of the Delaware General Corporation Law, which prohibits persons deemed toDGCL (“Section 203”). Under Section 203, we would generally be “interested stockholders”prohibited from engaging in any business combination with any interested stockholder for a “business combination” with a publicly held Delaware corporation forperiod of three years following the date thesetime that this stockholder became an interested stockholder unless:

prior to this time, our board of directors approved either the business combination or the transaction that resulted in the stockholder becoming an interested stockholder;

upon consummation of the transaction that resulted in the stockholder becoming an interested stockholder, the interested stockholder owned at least 85% of our voting stock outstanding at the time the transaction commenced, excluding shares owned by persons become interested stockholders unlesswho are directors and also officers, and by employee stock plans in which employee participants do not have the right to determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

at or subsequent to such time, the business combination is approved by our board of directors and authorized at an annual or special meeting of stockholders, and not by written consent, by the affirmative vote of at least 66 and 2/3% of the outstanding voting stock that is not owned by the interested stockholder.

Under Section 203, a “business combination” includes:

any merger or consolidation involving the corporation and the interested stockholder;

any sale, transfer, pledge or other disposition of 10% or more of the assets of the corporation involving the interested stockholder;

any transaction that results in which the person becameissuance or transfer by the corporation of any stock of the corporation to the interested stockholder, subject to limited exceptions;

any transaction involving the corporation that has the effect of increasing the proportionate share of the stock of any class or series of the corporation beneficially owned by the interested stockholder; or

the receipt by the interested stockholder of the benefit of any loans, advances, guarantees, pledges or other financial benefits provided by or through the corporation.

In general, Section 203 defines an interested stockholder was, approved in a prescribed manneras an entity or another prescribed exception applies. Generally, an “interested stockholder” is a person who, together with affiliates and associates, owns, or within three years prior to the determination of interested stockholder status did own,beneficially owning 15% or more of a corporation’sthe outstanding voting stock. Generally, a “business combination” includes a merger, asset or stock sale, or other transaction resulting in a financial benefit to the interested stockholder. The existence of this provision may have an anti-takeover effect with respect to transactions not approved in advance by the board of directors.

Amendment of Charter Provisions

The amendment of any of the above provisions, except for the provision making it possible for our board of directors to issue preferred stock, would require approvalcorporation and any entity or person affiliated with or controlling or controlled by holders of at least 66 23% of the total voting power of all of our outstanding voting stock.such entity or person.

The provisions of Delaware law and our amended and restated certificate of incorporation and our amended and restated bylaws could have the effect of discouraging others from attempting hostile takeovers and, as a consequence, they may also inhibit temporary fluctuations in the market price of our common stock that often result from actual or rumored hostile takeover attempts. These provisions may also have the effect of preventing changes in the composition of our board and management. It is possible that these provisions couldmay make it more difficult to accomplish transactions that stockholders may otherwise deem to be in their best interests.

Transfer Agent and RegistrarPre-Funded Warrants

The transfer agentfollowing summary of certain terms and registrarprovisions of the pre-funded warrants that are being offered hereby is not complete and is subject to, and qualified in its entirety by, the provisions of the pre-funded warrant, the form of which will be filed as an exhibit to the registration statement of which this prospectus forms a part. Prospective investors should carefully review the terms and provisions of the form of pre-funded warrant for a complete description of the terms and conditions of the pre-funded warrants.

Duration and Exercise Price

Each pre-funded warrant offered hereby will have an initial exercise price per share equal to $0.0001. The pre-funded warrants will be immediately exercisable and will not expire prior to exercise. The exercise price and number of shares of common stock issuable upon exercise is subject to appropriate adjustment in the event of stock dividends, stock splits, reorganizations or similar events affecting our common stock. The pre-funded warrants will be issued in certificated form.

Exercisability

The pre-funded warrants will be exercisable, at the option of each holder, in whole or in part, by delivering to us a duly executed exercise notice accompanied by payment in full for the number of shares of our common stock will be             purchased upon such exercise (except in the case of a cashless exercise as discussed below).

NASDAQ Global Market

We have applied Purchasers of the pre-funded warrants in this offering may elect to deliver their exercise notice following the pricing of the offering and prior to the issuance of the pre-funded warrants at closing to have our common stock listed on The NASDAQ Global Market under the symbol “CNAT.”

SHARES ELIGIBLE FOR FUTURE SALE

Immediately prior to this offering, there was no public market for our common stock. Future sales of substantial amountstheir pre-funded warrants exercised immediately upon issuance and receive shares of common stock underlying the pre-funded warrants upon closing of this offering. A holder (together with its affiliates) may not exercise any portion of the pre-funded warrant to the extent that the holder would own more than 4.99% (or, at the election of the holder, 9.99%) of the outstanding common stock immediately after exercise, except that upon notice from the holder to us, the holder may increase or

decrease the beneficial ownership limitation in the public market, or the perception that such sales may occur, could adversely affect the market priceholder’s pre-funded warrants up to 9.99% of our common stock. Although we have applied to have our common stock listed on The NASDAQ Global Market, we cannot assure you that there will be an active public market for our common stock.

Based on the number of shares of our common stock outstanding as of December 31, 2012 and assuming (1) the issuance of shares in this offering, (2) the conversion of all outstanding shares of our convertible preferred stock into shares of our common stock, which will automatically occur immediately priorafter giving effect to the closingexercise, as such percentage ownership is determined in accordance with the terms of the offering, and (3)pre-funded warrants provided that any increase in the issuancebeneficial ownership limitation shall not be effective until 61 days following notice to us.

Cashless Exercise

If, at the time a holder exercises its pre-funded warrants, in lieu of making the cash payment otherwise contemplated to be made to us upon such exercise in payment of the aggregate exercise price, the holder may elect instead to receive upon such exercise (either in whole or in part) the net number of shares of common stock asdetermined according to a resultformula set forth in the pre-funded warrants.

Transferability

Subject to applicable laws, a pre-funded warrant may be transferred at the option of the expected net exerciseholder upon surrender of outstanding warrants, or the 2010 Warrants, in connectionpre-funded warrant to us together with the completionappropriate instruments of this offering, assuming an initial public offering price of $ per share (the midpoint of the price range listed on the cover page of this prospectus), which 2010 Warrants will terminate if unexercised prior to the completion of this offering, (4) no exercise of the underwriters’ option to purchase additional shares of common stock, and (5) no exercise of outstanding options, we will have outstanding an aggregate of approximately              shares of common stock.transfer.

Of these shares, all shares sold in this offering will be freely tradable without restriction or further registration under the Securities Act, except for any shares purchased by our “affiliates,” as that term is defined in Rule 144 under the Securities Act.Fractional Shares purchased by our affiliates would be subject to the Rule 144 resale restrictions described below, other than the holding period requirement.

The remainingNo fractional shares of common stock will be “restricted securities,” as that term is defined in Rule 144 underissued upon the Securities Act. These restricted securities are eligible for public sale only if they are registered underexercise of the Securities Act or if they qualify for an exemption from registration under Rule 144 or 701 underpre-funded warrants. Rather, the Securities Act, eachnumber of which is summarized below. We expect that substantially allshares of these sharescommon stock to be issued will be subjectrounded up to the 180-day lock-up period undernearest whole number.

Trading Market

There is no established public trading market for the lock-up agreements described below.

pre-funded warrants, and we do not expect a market to develop. In addition, we do not intend to apply to list the pre-funded warrants on any national securities exchange or other nationally recognized trading system. Without an active trading market, the liquidity of the 4,899,000pre-funded warrants will be limited.

Right as a Stockholder

Except as otherwise provided in the pre-funded warrants or by virtue of such holder’s ownership of shares of our common stock, that were subjectthe holders of the pre-funded warrants do not have the rights or privileges of holders of our common stock with respect to stock options outstanding as of March 31, 2013, options to purchase 4,319,833 of suchthe shares of common stock were vestedunderlying the pre-funded warrants, including any voting rights, until they exercise their pre-funded warrants. The pre-funded warrants will provide that holders have the right to participate in distributions or dividends paid on our common stock.

Fundamental Transaction

In the event of a fundamental transaction, as of such datedescribed in the pre-funded warrants and upon exercise, these shares will be eligible for sale subject to the lock–up agreements described below and Rules 144 and 701 under the Securities Act.

Lock-Up Agreements

We and eachgenerally including any reorganization, recapitalization or reclassification of our directors and executive officers and holderscommon stock, the sale, transfer or other disposition of all or substantially all of our outstanding capital stock, who collectively own              sharesproperties or assets, our consolidation or merger with or into another person, the acquisition of more than 50% of our common stock, based on shares outstanding as of March 31, 2013, have agreed that we and they will not, subject to limited exceptions that are described in more detail in the section in this prospectus entitled “Underwriting,” during the period ending 180 days after the date of this prospectus:

sell, offer, contract or grant any option to sell (including any short sale), pledge, transfer, establish an open “put equivalent position” within the meaning of Rule 16a-l(h) under the Exchange Act;

otherwise dispose of any shares of our common stock, options or warrants to acquire shares of our common stock, or securities exchangeableany person or exercisable for or convertible into sharesgroup becoming the beneficial owner of 50% of the voting power represented by our outstanding common stock, currently or hereafter owned either of record or beneficially; or

publicly announce an intention to do anythe holders of the foregoing.

Stifel, Nicolaus & Company, Incorporated and Piper Jaffray & Co. may, in their sole discretion and at any time or from timepre-funded warrants will be entitled to time before the terminationreceive upon exercise of the 180-day period, without public notice, release allpre-funded warrants the kind and amount of securities, cash or any portionother property that the holders would have received had they exercised the pre-funded warrants immediately prior to such fundamental transaction.

Common Warrants

The following summary of certain terms and provisions of the securitiescommon warrants that are being offered hereby is not complete and is subject to, lock-up agreements. There are no existing agreements betweenand qualified in its entirety by, the underwriters and anyprovisions of our stockholders whothe

warrant, the form of which will execute a lock-up agreement providing consentbe filed as an exhibit to the sale of shares prior to the expiration of the restricted period.

Upon the expiration of the lock-up period, substantially all of the shares subject to such lock-up restrictions will become eligible for sale, subject to the limitations discussed above.

Rule 144

Affiliate Resales of Restricted Securities

In general, beginning 90 days after the effective date of the registration statement of which this prospectus forms a part. Prospective investors should carefully review the terms and provisions of the form of warrant for a complete description of the terms and conditions of the warrants. The common warrants will be issued in certificated form.

Duration and Exercise Price

The warrants will be exercisable from and after the date of their issuance and expire on the five year anniversary of such date, at an exercise price per share of common stock equal to $                or    % of the combined public offering price per share of common stock and related warrant in this offering. The holder of a warrant will not be deemed a holder of our underlying common stock until the warrant is exercised.

Exercisability

The warrants will be exercisable, at the option of each holder, in whole or in part, by delivering to us a part, a person who is an affiliateduly executed exercise notice accompanied by payment in full for the number of ours, or who was an affiliate at any time during the 90 days before a sale, who has beneficially owned shares of our common stock forpurchased upon such exercise (except in the case of a cashless exercise as discussed below). A holder (together with its affiliates) may not exercise any portion of the warrant to the extent that the holder would own more than 4.99% (or, at least six months would be entitledthe election of the holder, 9.99%) of the outstanding common stock immediately after exercise, except that upon notice from the holder to sellus, the holder may increase or decrease the beneficial ownership limitation in “broker’s transactions” or certain “riskless principal transactions” orthe holder’s pre-funded warrants up to market makers, a number of shares within any three-month period that does not exceed the greater of:

1%9.99% of the number of shares of our common stock then outstanding which will equal approximately              shares immediately after this offering; or

the average weekly trading volume in our common stock on The NASDAQ Global Market during the four calendar weeks preceding the filing of a notice on Form 144 with respect to such sale.

Affiliate resales under Rule 144 are also subjectgiving effect to the availability of current public information about us. In addition, if the number of shares being sold under Rule 144 by an affiliate during any three-month period exceeds 5,000 shares or has an aggregate sale priceexercise, as such percentage ownership is determined in excess of $50,000, the seller must file a notice on Form 144accordance with the Securities and Exchange Commission and The NASDAQ Global Market concurrently with eitherterms of the placing of a sale order withwarrants, provided that any increase in the broker or the execution of a sale directly with a market maker.beneficial ownership limitation shall not be effective until 61 days following notice to us.

Non-Affiliate Resales of Restricted SecuritiesCashless Exercise

In general, beginning 90 days after the effective date of the registration statement of which this prospectus is a part, a person who is not an affiliate of oursIf, at the time a holder exercises its warrants, a registration statement registering the issuance of sale, and has not been an affiliate at any time during the three months preceding a sale, and who has beneficially owned shares of our common stock for at least six months but less than a year, is entitled to sell such shares subject only tounderlying the availability of current public information about us. If such person has held our shares for at least one year, such person can resell under Rule 144(b)(1) without regard to any Rule 144 restrictions, including the 90-day public company requirement and the current public information requirement.

Non-affiliate resales are not subject to the manner of sale, volume limitation or notice filing provisions of Rule 144.

Rule 701

In general, under Rule 701, any of an issuer’s employees, directors, officers, consultants or advisors who purchases shares from the issuer in connection with a compensatory stock or option plan or other written agreement before the effective date of a registration statementwarrants under the Securities Act is entitled to sellnot then effective or available for the issuance of such shares, 90 days afterthen in lieu of making the cash payment otherwise contemplated to be made to us upon such effective dateexercise in reliance on Rule 144. An affiliatepayment of the issuer can resell sharesaggregate exercise price, the holder may elect instead to receive upon such exercise (either in reliance on Rule 144 without having to comply withwhole or in part) the holding period requirement, and non-affiliatesnet number of the issuer can resell shares in reliance on Rule 144 without having to comply with the current public information and holding period requirements.

Equity Plans

We intend to file one or more registration statements on Form S-8 under the Securities Act to register all shares of common stock subjectdetermined according to outstanding stock options anda formula set forth in the warrants.

Transferability

Subject to applicable laws, a warrant may be transferred at the option of the holder upon surrender of the warrant to us together with the appropriate instruments of transfer.

Fractional Shares

No fractional shares of common stock will be issued upon the exercise of the warrants. Rather, the number of shares of common stock to be issued will be rounded to the nearest whole number.

Trading Market

There is currently no established public trading market for the warrants, and there is no assurance that a market will develop.

Right as a Stockholder

Except as otherwise provided in the warrants or issuable under our equity incentive plans and employee stock purchase plan. We expect to file the registration statement covering shares offered pursuant to our stock plans shortly after the date of this prospectus, permitting the resaleby virtue of such shares by non-affiliates in the public market without restriction under the Securities Act and the sale by affiliates in the public market subject to compliance with the resale provisions of Rule 144.

Registration Rights

As of June 12, 2013, holdersholder’s ownership of shares of our common stock, which includes allthe holders of the warrants do not have the rights or privileges of holders of our common stock with respect to the shares of common stock issuable uponunderlying the automatic conversionwarrants, including any

voting rights, until they exercise their warrants. The warrants will provide that holders have the right to participate in distributions or dividends paid on our common stock.

Fundamental Transaction

In the event of our convertible preferred stock immediately prior toa fundamental transaction, as described in the closing of this offering,                      sharesform of common stock issuable as a result of the expected

net exercise of the 2010 Warrants in connection with the completion of this offering, assuming an initial public offering price of $             per share (the midpoint of the price range listed on the cover page of this prospectus),              shares of common stock issuable in connection with the completion of this offering as a result of the automatic conversion of the $1.0 million in aggregate principal amount of 2013 Notes (including accrued interest thereon), assuming an initial public offering price of $         per share (the midpoint of the price range listed on the cover page of this prospectus)warrant and assuming the conversion occurs on                 , 2013 (the expected closing date of this offering), and              shares of common stock issuable upon the exercise of the 2013 Warrants,generally including any reorganization, recapitalization or their transferees will be entitled to various rights with respect to the registration of these shares under the Securities Act upon the closing of this offering. Registration of these shares under the Securities Act would result in these shares becoming fully tradable without restriction under the Securities Act immediately upon the effectiveness of the registration, except for shares purchased by affiliates. See “Description of Capital Stock—Registration Rights” for additional information. Shares covered by a registration statement will be eligible for sale in the public market upon the expiration or release from the terms of the lock-up agreement.

MATERIAL UNITED STATES FEDERAL INCOME TAX CONSEQUENCES TO NON-U.S. HOLDERS OF COMMON STOCK

The following is a summary of the material United States federal income tax consequences to non-U.S. holders (as defined below) of the acquisition, ownership and dispositionreclassification of our common stock, issued pursuant to this offering. This discussion is not a complete analysisthe sale, transfer or other disposition of all or substantially all of the potential United States federal income tax consequences relating thereto, nor does it address any estate and gift tax consequencesour properties or any tax consequences arising under any state, localassets, our consolidation or foreign tax laws,merger with or any other United States federal tax laws. This discussion is based on the Internal Revenue Code of 1986, as amended (the “Code”), United States Treasury regulations promulgated thereunder (“Treasury Regulations”), judicial decisions, and published rulings and administrative pronouncements of the Internal Revenue Service (“IRS”), all as in effect as of the date of this offering. These authorities may change, possibly retroactively, resulting in United States federal income tax consequences different from those discussed below. No ruling has been or will be sought from the IRS with respect to the matters discussed below, and there can be no assurance that the IRS will not take a contrary position regarding the tax consequences ofinto another person, the acquisition ownership or disposition of our common stock, or that any such contrary position would not be sustained by a court.

This discussion is limited to non-U.S. holders who purchase our common stock issued pursuant to this offering and who hold our common stock as a “capital asset” within the meaning of Section 1221 of the Code (generally, property held for investment). This discussion does not address all of the United States federal income tax consequences that may be relevant to a particular holder in light of such holder’s particular circumstances. This discussion also does not consider any specific facts or circumstances that may be relevant to holders subject to special rules under the United States federal income tax laws, including, without limitation:

banks, thrifts, insurance companies and other financial institutions;

tax-exempt organizations;

partnerships, S corporations or other pass-through entities;

real estate investment trusts and regulated investment companies;

brokers, dealers or traders in securities, commodities or currencies;

United States expatriates and certain former citizens or long-term residents of the United States;

“controlled foreign corporations,” “passive foreign investment companies” or corporations that accumulate earnings to avoid U.S. federal income tax;

persons that own, or are deemed to own, more than 5%50% of our outstanding common stock, (except toor any person or group becoming the extent specifically set forth below);

persons deemed to sell our common stock under the constructive sale provisionsbeneficial owner of 50% of the Code;

persons subject to the alternative minimum tax;

persons that holdvoting power represented by our common stock as part of a hedge, straddle or other risk reduction strategy or as part of a conversion transaction or other integrated investment;

persons that hold or receive our common stock pursuant to the exercise of any employee stock option or otherwise as compensation; or

tax-qualified retirement plans.

If a partnership (or other entity taxed as a partnership for United States federal income tax purposes) holds ouroutstanding common stock, the tax treatment of a partner in the partnership generally will depend on the statusholders of the partner andcommon warrants will be entitled to receive upon the activitiesexercise of the partnership. Accordingly, partnerships that hold our common stockwarrants the kind and partners in such partnerships are urged to consult their tax advisors regarding the specific United States federal income tax consequences to themamount of acquiring, owning or disposing of our common stock.

PROSPECTIVE INVESTORS SHOULD CONSULT THEIR TAX ADVISORS REGARDING THE PARTICULAR UNITED STATES FEDERAL INCOME TAX CONSEQUENCES TO THEM OF ACQUIRING, OWNING AND DISPOSING OF OUR COMMON STOCK, AS WELL AS ANY TAX CONSEQUENCES ARISING UNDER ANY STATE, LOCAL OR FOREIGN TAX LAWS, ANY OTHER UNITED STATES FEDERAL TAX LAWS AND ANY APPLICABLE TAX TREATY.

Definition of Non-U.S. Holder

For purposes of this discussion, a non-U.S. holder is any beneficial owner of our common stock that is not a “U.S. person” or a partnership for United States federal income tax purposes. A U.S. person is any of the following:

an individual citizen or resident of the United States;

a corporation (or other entity treated as a corporation for United States federal income tax purposes) created or organized under the laws of the United States, any state thereof or the District of Columbia;

an estate the income of which is subject to United States federal income tax regardless of its source; or

a trust (1) whose administration is subject to the primary supervision of a United States court and which has one or more United States persons who have the authority to control all substantial decisions of the trust, or (2) that has a valid election in effect under applicable Treasury Regulations to be treated as a U.S. person for United States federal income tax purposes.

Distributions on Our Common Stock

As described in the section entitled “Dividend Policy,” we do not anticipate declaring or paying dividends to holders of our common stock in the foreseeable future. However, if we do makesecurities, cash or other property distributions on our common stock,that the holders would have received had they exercised the warrants immediately prior to such distributions generallyfundamental transaction. Additionally, as more fully described in the warrants, in the event of a fundamental transaction (as defined in the warrants), the holders of the warrants will constitute dividends for United States federal income tax purposesbe entitled to receive consideration in an amount in cash equal to the extent paid from our current or accumulated earnings and profits, asBlack Scholes value of the warrants determined under United States federal income tax principles. Amounts not treated as dividends for United States federal income tax purposes will constituteaccording to a return of capital and will first be applied against and reduce a non-U.S. holder’s adjusted tax basisformula set forth in the common stock, butwarrants, provided, however, that, if the fundamental transaction is not below zero. Any excess willwithin our control, including not approved by our board of directors, then the holder shall only be treated as capital gainentitled to receive the same type or form of consideration (and in the same proportion), at the Black Scholes value of the unexercised portion of the warrant, that is being offered and will be treated as described under “—Dispositions of Our Common Stock” below.

Dividends paid to a non-U.S. holderthe holders of our common stock that are not effectively connected with a United States trade or business conducted by such non-U.S. holder generally will be subject to United States federal withholding tax at a rate of 30% of the gross amount of the dividends, or such lower rate specified by an applicable tax treaty. To receive the benefit of a reduced treaty rate, a non-U.S. holder must furnish to us or our paying agent a valid IRS Form W-8BEN (or applicable successor form) certifying such non-U.S. holder’s qualification for the reduced rate. This certification must be provided to us or our paying agent prior to the payment of dividends and must be updated periodically. If the non-U.S. holder holds the stock through a financial institution or other agent acting on the non-U.S. holder’s behalf, the non-U.S. holder will be required to provide appropriate documentation to the agent, who then will be required to provide certification to us or our paying agent, either directly or through other intermediaries. Non-U.S. holders that do not timely provide us or our paying agent with the required certification, but that qualify for a reduced treaty rate, may obtain a refund of any excess amounts withheld by timely filing an appropriate claim for refund with the IRS. Non-U.S. holders should consult their tax advisors regarding possible entitlement to benefits under a tax treaty.

If a non-U.S. holder holds our common stock in connection with the conduct of a trade or business in the United States, and dividends paid on the shares of our common stock are effectively connected with such non-U.S. holder’s United States trade or business (and, if required by an applicable tax treaty, are attributable to a permanent establishment maintained by the non-U.S. holder in the United States), the non-U.S. holder will be exempt from United States federal withholding tax. To claim the exemption, the non-U.S. holder must generally furnish to us or our paying agent a valid IRS Form W-8ECI (or applicable successor form), certifying that the dividends are effectively connected with the non-U.S. holder’s conduct of a trade or business within the United States. Any dividends paid on our common stock that are effectively connected with a non-U.S. holder’s United States trade or business (and if required by an applicable tax treaty, attributable to a permanent establishment maintained by the non-U.S. holder in the United States) generally will be subject to United States federal income tax on a net income basis in the same manner as if such non-U.S. holder were a U.S. person and, for a non-U.S. holder that is a corporation, also may be subject to a branch profits tax equal to 30% (or such lower rate specified by an applicable tax treaty) of its effectively connected earnings and profits for the taxable year, as adjusted for certain items. Non-U.S. holders should consult their tax advisors regarding any applicable tax treaties that may provide for different rules.fundamental transaction.

Dispositions of Our Common Stock

Subject to the discussion below regarding backup withholding, a non-U.S. holder generally will not be subject to United States federal income tax on any gain realized upon the sale or other disposition of our common stock, unless:

the gain is effectively connected with the non-U.S. holder’s conduct of a trade or business in the United States, and if required by an applicable tax treaty, attributable to a permanent establishment maintained by the non-U.S. holder in the United States;

the non-U.S. holder is a nonresident alien individual present in the United States for 183 days or more during the taxable year of the sale or disposition, and certain other requirements are met; or

our common stock constitutes a United States real property interest by reason of our status as a United States real property holding corporation (“USRPHC”) for United States federal income tax purposes at any time within the shorter of (i) the five-year period ending on the date of the sale or disposition of our common stock or (ii) the non-U.S. holder’s holding period for our common stock.

Unless an applicable treaty provides otherwise, the gain described in the first bullet point above generally will be subject to United States federal income tax on a net income basis in the same manner as if such non-U.S. holder were a U.S. person. A non-U.S. holder that is a corporation also may be subject to a branch profits tax equal to 30% (or such lower rate specified by an applicable tax treaty) of its effectively connected earnings and profits for the taxable year, as adjusted for certain items. Non-U.S. holders should consult their tax advisors regarding any applicable tax treaties that may provide for different rules.

Gain described in the second bullet point above generally will be subject to United States federal income tax at a flat 30% rate (or such lower rate specified by an applicable income tax treaty), but may be offset by United States source capital losses of the non-U.S. holder (even though the individual is not considered a resident of the United States), provided that the non-U.S. holder has timely filed U.S. federal income tax returns with respect to such losses.

With respect to the third bullet point above, we believe that we are not currently, and we do not anticipate becoming, a USRPHC. However, because the determination of whether we are a USRPHC depends on the fair market value of our United States real property interests relative to the fair market value of our other business assets, there can be no assurance that we will not become a USRPHC in the future. In the event we do become a USRPHC, as long as our common stock is regularly traded on an established securities market, our common stock will be treated as a U.S. real property interest only with respect to a non-U.S. holder that actually or constructively held more than 5% of our common stock at any time during the shorter of (i) the five-year period ending on the date of the sale or disposition of our common stock or (ii) the non-U.S. holder’s holding period for our common stock. If gain on the sale or other taxable disposition of our common stock were subject to taxation under the third bullet point above, the non-U.S. holder would be subject to regular United States federal income tax with respect to such gain in generally the same manner as a U.S. person.

Information Reporting and Backup Withholding

Generally, we must report annually to the IRS and to each non-U.S. holder the amount of dividends paid to such non-U.S. holder and the amount, if any, of tax withheld with respect to those dividends. This information also may be made available under a specific treaty or agreement with the tax authorities in the country in which the non-U.S. holder resides or is established. Under certain circumstances, the Code imposes backup withholding on certain reportable payments. Backup withholding, however, generally will not apply to payments of dividends to a non-U.S. holder of our common stock provided the non-U.S. holder furnishes to us or our paying agent the required certification as to its non-U.S. status, such as by providing a valid IRS Form W-8BEN or IRS Form W-8ECI, or otherwise establishes an exemption. Notwithstanding the foregoing, backup withholding may apply if either we or our paying agent has actual knowledge, or reason to know, that the holder is a U.S. person that is not an exempt recipient.

Unless a non-U.S. holder complies with certification procedures to establish that it is not a U.S. person, information returns may be filed with the IRS in connection with, and the non-U.S. holder may be subject to

backup withholding on the proceeds from, a sale or other disposition of our common stock. The certification procedures described in the above paragraph will satisfy these certification requirements as well.

Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules may be allowed as a refund or a credit against a non-U.S. holder’s United States federal income tax liability, provided the required information is timely furnished to the IRS.

Foreign Accounts

Withholding taxes may apply to certain types of payments made to “foreign financial institutions” (as specially defined under those rules) and certain other non-U.S. entities. The failure to comply with additional certification, information reporting and other specified requirements could result in a withholding tax being imposed on payments of dividends and sales proceeds to foreign intermediaries and certain non-U.S. holders. A 30% withholding tax is imposed on dividends on, or gross proceeds from the sale or other disposition of, our common stock paid to a foreign financial institution or to a foreign non-financial entity, unless (i) the foreign financial institution undertakes certain diligence and reporting obligations, (ii) the foreign non-financial entity either certifies it does not have any substantial United States owners or furnishes identifying information regarding each substantial United States owner, or (iii) the foreign financial institution or foreign non-financial entity otherwise qualifies for an exemption from these rules. If the payee is a foreign financial institution and is subject to the diligence and reporting requirements in clause (i) above, it must enter into an agreement with the United States Treasury requiring, among other things, that it undertake to identify accounts held by certain United States persons or United States-owned foreign entities, annually report certain information about such accounts, and withhold 30% on payments to non-compliant foreign financial institutions and certain other account holders.

Recently issued final Treasury Regulations provide that such rules will generally apply to payments of dividends made on or after January 1, 2014 and to payments of gross proceeds from a sale or other disposition of common stock on or after January 1, 2017. Prospective investors should consult their tax advisors regarding these withholding provisions.

UNDERWRITING

Subject to the terms and conditions set forth in an underwriting agreement, each of the underwriters named below has severally agreed to purchase from us the aggregate number of shares of common stock set forth opposite their respective names below:

Underwriters

Number of Shares

Stifel, Nicolaus & Company, Incorporated

Piper Jaffray & Co.

JMP Securities LLC

SunTrust Robinson Humphrey, Inc.

Total

The underwriting agreement provides that the obligations of the several underwriters are subject to various conditions, including approval of legal matters by counsel. The nature of the underwriters’ obligations commits them to purchase and pay for all of the shares of common stock listed above if any are purchased. The underwriters reserve the right to withdraw, cancel or modify offers to the public and to reject orders in whole or in part.

The underwriters expect to deliver the shares of common stock to purchasers on or about                     , 2013.

Over-Allotment Option

We have granted a 30-day over-allotment option to the underwriters to purchase up to a total of          additional shares of our common stock from us, at the initial public offering price, less the underwriting discounts and commissions payable by us, as set forth on the cover page of this prospectus. If the underwriters exercise this option in whole or in part, then each of the underwriters will be separately committed, subject to the conditions described in the underwriting agreement, to purchase the additional shares of our common stock in proportion to their respective commitments set forth in the table above. We will pay the expenses associated with the exercise of the over-allotment option.

Lock-Up Agreements

We and the holders (including all of our directors and executive officers) of substantially all of the shares of our common stock outstanding prior to this offering have agreed that, without the prior written consent of each of Stifel, Nicolaus & Company, Incorporated and Piper Jaffray & Co., we and they will not directly or indirectly:

offer, sell, contract to sell (including any short sale), pledge, hypothecate, establish an open “put equivalent position” within the meaning of Rule 16a-1(h) under the Exchange Act, grant any option, right or warrant for the sale of, purchase any option or contract to sell, sell any option or contract to purchase, or otherwise encumber, dispose of or transfer, or grant any rights with respect to, directly or indirectly, any shares of common stock or securities convertible into or exchangeable or exercisable for any shares of common stock;

enter into a transaction which would have the same effect, or enter into any swap, hedge or other arrangement that transfers, in whole or in part, any of the economic consequences of ownership of the common stock, whether any such transaction is to be settled by delivery of the common stock or other securities, in cash or otherwise; or

publicly disclose the intention to do any of the foregoing,

for a period of 180 days after the date of this prospectus. However, in the case of our officers, directors and stockholders, these lock-up restrictions will not apply to:

bona fide gifts made by the holder;

the surrender or forfeiture of shares of common stock to us to satisfy tax withholding obligations upon exercise or vesting of stock options or equity awards;

transfers of common stock or any security convertible into or exercisable for common stock to an immediate family member, an immediate family member of a domestic partner or a trust for the benefit of the undersigned, a domestic partner or an immediate family member;

transfers of shares of common stock or any security convertible into or exercisable for common stock to any corporation, partnership, limited liability company or other entity all of the beneficial ownership interests of which are held exclusively by the holder, a domestic partner and/or one or more family members of the holder or the holder’s domestic partner in a transaction not involving a disposition for value;

transfers of shares of common stock or any security convertible into or exercisable for common stock upon death by will or intestate succession;

distributions of shares of common stock or securities convertible into or exercisable for common stock to members, partners or stockholders of the holder;

the exercise of any option, warrant or other right to acquire shares of common stock, the settlement of any stock-settled stock appreciation rights, restricted stock or restricted stock units, or the conversion of any convertible security into our securities;

securities transferred to one or more affiliates of the holder and distributions of securities to partners, members or stockholders of the holder;

transactions relating to securities acquired in open market transactions after the date of this prospectus;

the entry into a trading plan established pursuant to Rule 10b5-1 under the Exchange Act, provided that such plan does not provide for any sales or other dispositions of shares of common stock during the 180-day restricted period; or

any shares purchased by the holder in this offering.

Except for transfers related to securities acquired on the open market or in this offering or to the surrender or forfeiture of shares of common stock to us to satisfy tax withholding obligations upon exercise or vesting of stock options or equity awards, as described above, any transferee under the excepted transfers above must agree in writing, prior to the transfer, to be bound by the lock-up agreements.

Additionally, in our case, the lock-up restrictions will not apply to:

shares sold in this offering;

equity based awards granted pursuant to our equity incentive plans referred to in this prospectus, including any amendments to those plans, and shares of common stock issued upon the exercise of any equity based awards;

shares of common stock issued upon the conversion of outstanding securities described in this prospectus;

the filing of a registration statement on Form S-8 relating to the registration of shares issuable pursuant to our equity incentive plans;

shares of common stock issued in satisfaction of the accumulated dividend on our outstanding convertible preferred stock; or

shares of common stock or any securities convertible into, or exercisable, or exchangeable for, shares of common stock, issued to lenders or financial institutions in connection with bona fide debt or credit arrangements as long as (x) the aggregate number of shares of common stock issued or issuable does not exceed 5% of the number of shares of common stock outstanding immediately after this offering, and (y) each recipient of any such shares or other securities agrees to restrictions on the resale of such securities that are consistent with the lock-up agreements described above.

Stifel, Nicolaus & Company, Incorporated and Piper Jaffray & Co., in their sole discretion, may release the common stock and other securities subject to the lock-up agreements described above in whole or in part at any time with or without notice. When determining whether or not to release common stock and other securities from lock-up agreements, Stifel, Nicolaus & Company, Incorporated and Piper Jaffray & Co. will consider, among other factors, the holder’s reasons for requesting the release, the number of shares of common stock and other securities for which the release is being requested and market conditions at the time.

Determination of Offering Price

Prior to this offering, there has been no public market for our common stock. The initial public offering price will be determined through negotiations between us and Stifel, Nicolaus & Company, Incorporated and

Piper Jaffray & Co., as representatives of the several underwriters. In addition to prevailing market conditions, the factors to be considered in determining the initial public offering price will include:

the information set forth in this prospectus and otherwise available to the representatives;

our history and prospects, including our past and present financial performance and our prospects for future earnings;

the history and prospects of companies in our industry;

prior offerings of those companies;

our capital structure;

an assessment of our management and their experience;

general conditions of the securities markets at the time of the offering; and

other factors as we deem relevant.

We cannot assure you that an active or orderly trading market will develop for our common stock or that our common stock will trade in the public markets subsequent to this offering at or above the initial public offering price.

Commissions and Expenses

The underwriters propose to offer the shares of common stock directly to the public at the initial public offering price set forth on the cover page of this prospectus, and at this price less a concession not in excess of $             per share of common stock to other dealers specified in a master agreement among underwriters who are members of the Financial Industry Regulatory Authority, Inc. The underwriters may allow, and the other dealers specified may reallow, concessions not in excess of $             per share of common stock to these other dealers. After this offering, the offering price, concessions, and other selling terms may be changed by the underwriters. Our common stock is offered subject to receipt and acceptance by the underwriters and to certain other conditions, including the right to reject orders in whole or in part.

The following table summarizes the compensation to be paid to the underwriters by us and the proceeds, before expenses, payable to us:

Total
Per ShareWithout
Over-Allotment
With
Over-Allotment

Public offering price

Underwriting discounts and commissions

Proceeds, before expenses, to us

We estimate that the total expenses of the offering payable by us, including registration, filing and listing fees, printing fees and legal and accounting expenses, but excluding underwriting discounts and commissions, will be approximately $             million.

Indemnification of Underwriters

We will indemnify the underwriters against some civil liabilities, including liabilities under the Securities Act. If we are unable to provide this indemnification, we will contribute to payments the underwriters may be required to make in respect of those liabilities.

NASDAQ Market Listing

We have applied to have our common stock listed on The NASDAQ Global Market under the symbol “CNAT.”

Short Sales, Stabilizing Transactions and Penalty Bids

In order to facilitate this offering, persons participating in this offering may engage in transactions that stabilize, maintain, or otherwise affect the price of our common stock during and after this offering. Specifically,

the underwriters may engage in the following activities in accordance with the rules of the Securities and Exchange Commission.

Short sales.Short sales involve the sales by the underwriters of a greater number of shares than they are required to purchase in the offering. Covered short sales are short sales made in an amount not greater than the underwriters’ over-allotment option to purchase additional shares from us in this offering. The underwriters may close out any covered short position by either exercising their over-allotment option to purchase shares or purchasing shares in the open market. In determining the source of shares to close out the covered short position, the underwriters will consider, among other things, the price of shares available for purchase in the open market as compared to the price at which they may purchase shares through the over-allotment option. Naked short sales are any short sales in excess of such over-allotment option. The underwriters must close out any naked short position by purchasing shares in the open market. A naked short position is more likely to be created if the underwriters are concerned that there may be downward pressure on the price of the common stock in the open market after pricing that could adversely affect investors who purchase in this offering.

Stabilizing transactions.The underwriters may make bids for or purchases of the shares for the purpose of pegging, fixing, or maintaining the price of the shares, so long as stabilizing bids do not exceed a specified maximum.

Penalty bids.If the underwriters purchase shares in the open market in a stabilizing transaction or syndicate covering transaction, they may reclaim a selling concession from the underwriters and selling group members who sold those shares as part of this offering. Stabilization and syndicate covering transactions may cause the price of the shares to be higher than it would be in the absence of these transactions. The imposition of a penalty bid might also have an effect on the price of the shares if it discourages resales of the shares.

The transactions above may occur on The NASDAQ Global Market or otherwise. Neither we nor the underwriters make any representation or prediction as to the effect that the transactions described above may have on the price of the shares. If these transactions are commenced, they may be discontinued without notice at any time.

Discretionary Sales

The underwriters have informed us that they do not expect to confirm sales of common stock offered by this prospectus to accounts over which they exercise discretionary authority without obtaining the specific approval of the account holder.

Electronic Distribution

A prospectus in electronic format may be made available on the internet sites or through other online services maintained by one or more of the underwriters participating in this offering, or by their affiliates. Other than the prospectus in electronic format, the information on any underwriter’s web site and any information contained in any other web site maintained by an underwriter is not part of the prospectus or the registration statement of which this prospectus forms a part, has not been approved and/or endorsed by us or any underwriter in its capacity as underwriter and should not be relied upon by investors.

Relationships

The underwriters and their respective affiliates are full service financial institutions engaged in various activities, which may include securities trading, commercial and investment banking, financial advisory, investment management, principal investment, hedging, financing and brokerage activities. Certain of the underwriters and their affiliates have in the past provided, and may in the future from time to time provide, investment banking and other financing and banking services to us, for which they have in the past received, and may in the future receive, customary fees and reimbursement for their expenses. In the ordinary course of their various business activities, the underwriters and their respective affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers and may at any

time hold long and short positions in such securities and instruments. Such investment and securities activities may involve our securities and instruments.

European Economic Area

In relation to each member state of the European Economic Area that has implemented the Prospectus Directive (each, a relevant member state), with effect from and including the date on which the Prospectus Directive is implemented in that relevant member state (the relevant implementation date), an offer of securities described in this prospectus may not be made to the public in that relevant member state other than:

to any legal entity that is authorized or regulated to operate in the financial markets or, if not so authorized or regulated, whose corporate purpose is solely to invest in securities;

to any legal entity that has two or more of (1) an average of at least 250 employees during the last financial year; (2) a total balance sheet of more than €43,000,000 and (3) an annual net turnover of more than €50,000,000, as shown in its last annual or consolidated accounts;

to fewer than 100 natural or legal persons (other than qualified investors as defined in the Prospectus Directive) subject to obtaining the prior consent of the representatives; or

in any other circumstances that do not require the publication of a prospectus pursuant to Article 3 of the Prospectus Directive,

provided that no such offer of securities shall require us or any underwriter to publish a prospectus pursuant to Article 3 of the Prospectus Directive. For purposes of this provision, the expression an “offer of securities to the public” in any relevant member state means the communication in any form and by any means of sufficient information on the terms of the offer and the securities to be offered so as to enable an investor to decide to purchase or subscribe the securities, as the expression may be varied in that member state by any measure implementing the Prospectus Directive in that member state, and the expression “Prospectus Directive” means Directive 2003/71/EC and includes any relevant implementing measure in each relevant member state.

We have not authorized and do not authorize the making of any offer of securities through any financial intermediary on their behalf, other than offers made by the underwriters with a view to the final placement of the securities as contemplated in this prospectus. Accordingly, no purchaser of the securities, other than the underwriters, is authorized to make any further offer of the securities on behalf of us or the underwriters.

United Kingdom

This prospectus is only being distributed to, and is only directed at, persons in the United Kingdom that are qualified investors within the meaning of Article 2(1)(e) of the Prospectus Directive (Qualified Investors) that are also (i) investment professionals falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (the Order) or (ii) high net worth entities, and other persons to whom it may lawfully be communicated, falling within Article 49(2)(a) to (d) of the Order (all such persons together being referred to as relevant persons). This prospectus and its contents are confidential and should not be distributed, published or reproduced (in whole or in part) or disclosed by recipients to any other persons in the United Kingdom. Any person in the United Kingdom that is not a relevant person should not act or rely on this document or any of its contents.

France

This prospectus has not been prepared in the context of a public offering of financial securities in France within the meaning of Article L.411-1 of the French Code Monétaire et Financier and Title I of Book II of the Reglement Général of the Autorité des marchés financiers (the “AMF”) and therefore has not been and will not be filed with the AMF for prior approval or submitted for clearance to the AMF. Consequently, the shares of our common stock may not be, directly or indirectly, offered or sold to the public in France and offers and sales of the shares of our common stock may only be made in France to qualified investors (investisseurs qualifiés) acting for their own, as defined in and in accordance with Articles L.411-2 and D.411-1 to D.411-4, D.734-1, D.744-1, D.754-1 and D.764-1 of the French Code Monétaire et Financier. Neither this prospectus nor any other offering material may be released, issued or distributed to the public in France or used in connection with any offer for

subscription on sale of the shares of our common stock to the public in France. The subsequent direct or indirect retransfer of the shares of our common stock to the public in France may only be made in compliance with Articles L.411-1, L.411-2, L.412-1 and L.621-8 through L.621-8-3 of the French Code Monétaire et Financier.

Notice to Residents of Germany

Each person who is in possession of this prospectus is aware of the fact that no German securities prospectus (wertpapierprospekt) within the meaning of the securities prospectus act (wertpapier-prospektgesetz, the “act”) of the federal republic of Germany has been or will be published with respect to the shares of our common stock. In particular, each underwriter has represented that it has not engaged and has agreed that it will not engage in a public offering in the federal republic of Germany (ôffertliches angebot) within the meaning of the act with respect to any of the shares of our common stock otherwise than in accordance with the act and all other applicable legal and regulatory requirements.

Notice to Residents of Switzerland

The securities which are the subject of the offering contemplated by this prospectus may not be publicly offered in Switzerland and will not be listed on the SIX Swiss Exchange, or SIX, or on any other stock exchange or regulated trading facility in Switzerland. This prospectus has been prepared without regard to the disclosure standards for issuance prospectuses under art. 652a or art. 1156 of the Swiss Code of Obligations or the disclosure standards for listing prospectuses under art. 27 ff. of the SIX Listing Rules or the listing rules of any other stock exchange or regulated trading facility in Switzerland. None of this prospectus or any other offering or marketing material relating to the securities or the offering may be publicly distributed or otherwise made publicly available in Switzerland.

None of this prospectus or any other offering or marketing material relating to the offering, us or the securities have been or will be filed with or approved by any Swiss regulatory authority. In particular, this prospectus will not be filed with, and the offer of securities will not be supervised by, the Swiss Financial Market Supervisory Authority FINMA and the offer of securities has not been and will not be authorized under the Swiss Federal Act on Collective Investment Schemes, or CISA. The investor protection afforded to acquirers of interests in collective investment schemes under the CISA does not extend to acquirers of the securities.

Notice to Residents of the Netherlands

The offering of the shares of our common stock is not a public offering in The Netherlands. The shares of our common stock may not be offered or sold to individuals or legal entities in The Netherlands unless (i) a prospectus relating to the offer is available to the public, which has been approved by the Dutch Authority for the Financial Markets (Autoriteit Financiële Markten) or by the competent supervisory authority of another state that is a member of the European Union or party to the Agreement on the European Economic Area, as amended or (ii) an exception or exemption applies to the offer pursuant to Article 5:3 of The Netherlands Financial Supervision Act (Wet op het financieel toezicht) or Article 53 paragraph 2 or 3 of the Exemption Regulation of the Financial Supervision Act, for instance due to the offer targeting exclusively “qualified investors” (gekwalificeerde beleggers) within the meaning of Article 1:1 of The Netherlands Financial Supervision Act.

Notice to Residents of Japan

The underwriters will not offer or sell any of the shares of our common stock directly or indirectly in Japan or to, or for the benefit of, any Japanese person or to others, for re-offering or re-sale directly or indirectly in Japan or to any Japanese person, except in each case pursuant to an exemption from the registration requirements of, and otherwise in compliance with, the Financial Instruments and Exchange Law of Japan and any other applicable laws and regulations of Japan. For purposes of this paragraph, “Japanese person” means any person resident in Japan, including any corporation or other entity organized under the laws of Japan.

Notice to Residents of Hong Kong

The underwriters and each of their affiliates have not (1) offered or sold, and will not offer or sell, in Hong Kong, by means of any document, any shares of our common stock other than (a) to “professional investors”

within the meaning of the Securities and Futures Ordinance (Cap. 571) of Hong Kong and any rules made under that Ordinance or (b) in other circumstances which do not result in the document being a “prospectus” as defined in the Companies Ordinance (Cap. 32) of Hong Kong or which do not constitute an offer to the public within the meaning of that Ordinance; and (2) issued or had in its possession for the purposes of issue, and will not issue or have in its possession for the purposes of issue, whether in Hong Kong or elsewhere any advertisement, invitation or document relating to the shares of our common stock which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so under the securities laws of Hong Kong) other than with respect to the shares of our common stock which are or are intended to be disposed of only to persons outside Hong Kong or only to “professional investors” within the meaning of the Securities and Futures Ordinance and any rules made under that Ordinance. The contents of this document have not been reviewed by any regulatory authority in Hong Kong. You are advised to exercise caution in relation to the offer. If you are in any doubt about any of the contents of this document, you should obtain independent professional advice.

Notice to Residents of Singapore

This document has not been registered as a prospectus with the Monetary Authority of Singapore. Accordingly, this document and any other document or material in connection with the offer or sale, or invitation for subscription or purchase, of shares of our common stock may not be circulated or distributed, nor may shares of our common stock be offered or sold, or be made the subject of an invitation for subscription or purchase, whether directly or indirectly, to persons in Singapore other than (i) to an institutional investor under Section 274 of the Securities and Futures Act, Chapter 289 of Singapore (the “Securities and Futures Act”), (ii) to a relevant person, or any person pursuant to Section 275(1A), and in accordance with the conditions, specified in Section 275 of the Securities and Futures Act or (iii) otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the Securities and Futures Act.

Where shares of our common stock are subscribed or purchased under Section 275 by a relevant person, which is:

(a)

a corporation (which is not an accredited investor) the sole business of which is to hold investments and the entire share capital of which is owned by one or more individuals, each of whom is an accredited investor; or

(b)

a trust (where the trustee is not an accredited investor) whose sole purpose is to hold investments and each beneficiary is an accredited investor,

shares, debentures and units of shares and debentures of that corporation or the beneficiaries’ rights and interest in that trust shall not be transferable for six months after that corporation or that trust has acquired the shares of our common stock under Section 275 except:

(1)

to an institutional investor or to a relevant person, or to any person pursuant to an offer that is made on terms that such rights or interest are acquired at a consideration of not less than $200,000 (or its equivalent in a foreign currency) for each transaction, whether such amount is to be paid for in cash or by exchange of securities or other assets;

(2)

where no consideration is given for the transfer; or

(3)

by operation of law.

LEGAL MATTERS

The validity of the sharesissuance of common stocksecurities offered hereby will beby this prospectus has been passed upon for us by Latham & WatkinsDLA Piper LLP (US), San Diego, California. Goodwin ProcterDiego. Thompson Hine LLP, New York, New York has actedis acting as counsel forto the underwriters in connection with certain legal matters related to this offering.Placement Agent.

EXPERTS

Ernst & Young LLP, independent registered public accounting firm, has audited our consolidated financial statements at December 31, 20112019 and 2012,2018, and for each of the twothree years in the period ended December 31, 2012, and for the period from July 13, 2005 (inception) to December 31, 2012,2019, as set forth in their report (which contains an explanatory paragraph describing conditions that raise substantial doubt about our ability to continue as a going concern as described in Note 1 to the consolidated financial statements). We havereport. We’ve included our financial statements in the prospectus and elsewhere in the registration statement in reliance on Ernst & Young LLP’s report, given on their authority as experts in accounting and auditing.

The consolidated financial statements of Private Histogen (Histogen, Inc. now Histogen Therapeutics, Inc.) as of and for the years ended December 31, 2019 and 2018 included in this registration statement and related prospectus, have been audited by Mayer Hoffman McCann P.C., independent registered public accounting firm, as set forth in their report (which report includes an explanatory paragraph regarding the existence of substantial doubt about the Company’s ability to continue as a going concern) included in this prospectus in reliance on the report of Mayer Hoffman McCann P.C., given on the authority of such firm as experts in auditing and accounting in giving said reports.

WHERE YOU CAN FIND MORE INFORMATION

We have filed with the Securities and Exchange Commission a registration statement on Form S-1 under the Securities Act with respect to the shares of common stock offered hereby. This prospectus, which constitutes a part of the registration statement, does not contain all of the information set forth in the registration statement or the exhibits and schedules filed therewith. For further information about us and the common stock offered hereby, we refer you to the registration statement and the exhibits and schedules filed thereto. Statements contained in this prospectus regarding the contents of any contract or any other document that is filed as an exhibit to the registration statement are not necessarily complete, and each such statement is qualified in all respects by reference to the full text of such contract or other document filed as an exhibit to the registration statement. Upon completion of this offering, we will be required to file periodic reports, proxy statements and other information with the SEC. The SEC maintains an internet site that contains reports, proxy and information statements and other information regarding Histogen Inc. and other issuers that file electronically with the SEC. The address of the SEC internet site is www.sec.gov. In addition, we make available on or through our Internet site copies of these reports as soon as reasonably practicable after we electronically file or furnish them to the SEC. Our Internet site can be found at www.histogen.com

INDEX TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

HISTOGEN INC. AND SUBSIDIARIES

Page

Balance Sheets

F-2

Statements of Operations

F-3

Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit)

F-4

Statements of Cash Flows

F-6

Notes to Financial Statements

F-7

HISTOGEN INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per share amounts)

  September 30,
2020
  December 31,
2019
 
  (unaudited)    

Assets

  

Current assets:

  

Cash and cash equivalents

 $6,649  $2,065 

Restricted cash

  10   10 

Accounts receivable, net

  171   110 

Inventories

  453   106 

Prepaid and other current assets

  699   167 
 

 

 

  

 

 

 

Total current assets

  7,982   2,458 
 

 

 

  

 

 

 

Restricted cash

  250    

Property and equipment, net

  295   320 

Right-of-use assets

  4,334   95 

Other assets

  1,091   69 
 

 

 

  

 

 

 

Total assets

 $13,952  $2,942 
 

 

 

  

 

 

 

Liabilities, Convertible Preferred Stock and Stockholders’ Equity (Deficit)

  

Current liabilities:

  

Accounts payable

 $1,130  $808 

Accrued liabilities

  553   446 

Current portion of Paycheck Protection Program loan

  39    

Current portion of lease liabilities

     108 

Current portion of deferred revenue

  103   19 
 

 

 

  

 

 

 

Total current liabilities

  1,825   1,381 

Noncurrent Paycheck Protection Program loan

  428    

Noncurrent portion of lease liabilities

  4,749    

Noncurrent portion of deferred revenue

  123   138 

Other liabilities

  315   321 
 

 

 

  

 

 

 

Total liabilities

  7,440   1,840 
 

 

 

  

 

 

 

Commitments and contingencies (Note 10)

  

Convertible preferred stock, $0.001 par value; no shares and 73,000,000 shares authorized at September 30, 2020 and December 31, 2019, respectively; no shares and 5,046,154 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively; liquidation preference of $0 and $40,294 at September 30, 2020 and December 31, 2019, respectively

     39,070 

Stockholders’ Equity (Deficit)

  

Preferred stock, $0.0001 par value; 10,000,000 shares and no shares authorized at September 30, 2020 and December 31, 2019, respectively; no shares issued and outstanding at September 30, 2020 and December 31, 2019

      

Common stock, $0.0001 par value; 200,000,000 shares and 105,000,000 shares authorized at September 30, 2020 and December 31, 2019, respectively; 12,487,973 shares and 3,343,356 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively

  1    

Additional paid-in capital

  66,638   6,864 

Accumulated deficit

  (59,194  (43,933
 

 

 

  

 

 

 

Total Histogen Inc. stockholders’ equity (deficit)

  7,445   (37,069

Noncontrolling interest

  (933  (899
 

 

 

  

 

 

 

Total equity (deficit)

  6,512   (37,968
 

 

 

  

 

 

 

Total liabilities, convertible preferred stock and stockholders’ equity (deficit)

 $13,952  $2,942 
 

 

 

  

 

 

 

See accompanying notes to the unaudited condensed consolidated financial statements.

HISTOGEN INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except share and per share amounts)

   Three Months Ended
September 30,
  Nine Months Ended
September 30,
 
   2020  2019  2020  2019 

Revenues:

     

License

  $5  $5  $877  $7,515 

Product

   419   190   419   1,956 

Grant

            150 

Professional services

   71   119   285   272 
  

 

 

  

 

 

  

 

 

  

 

 

 

Total revenues

   495   314   1,581   9,893 
  

 

 

  

 

 

  

 

 

  

 

 

 

Operating expenses:

     

Cost of product revenue

   263   81   424   873 

Cost of professional services revenue

   62   104   248   237 

Acquired in-process research and development

         7,144   2,250 

Research and development

   1,534   673   4,362   2,716 

General and administrative

   1,982   1,202   4,753   4,607 
  

 

 

  

 

 

  

 

 

  

 

 

 

Total operating expenses

   3,841   2,060   16,931   10,683 
  

 

 

  

 

 

  

 

 

  

 

 

 

Loss from operations

   (3,346  (1,746  (15,350  (790

Other income (expense):

     

Change in fair value of warrant liabilities

      30      77 

Interest income (expense), net

   (25  18   (53  36 

Other income

   108      108    
  

 

 

  

 

 

  

 

 

  

 

 

 

Total other income (expense)

   83   48   55   113 
  

 

 

  

 

 

  

 

 

  

 

 

 

Net loss

   (3,263  (1,698  (15,295  (677

Net loss attributable to noncontrolling interest

   14   4   34   21 
  

 

 

  

 

 

  

 

 

  

 

 

 

Net loss attributable to common stockholders

  $(3,249 $(1,694 $(15,261 $(656
  

 

 

  

 

 

  

 

 

  

 

 

 

Net loss per share attributable to common stockholders, basic and diluted

  $(0.27 $(0.51 $(2.06 $(0.20
  

 

 

  

 

 

  

 

 

  

 

 

 

Weighted-average common shares used to compute net loss per share attributable to common stockholders, basic and diluted

   12,169,173   3,343,356   7,425,051   3,328,549 
  

 

 

  

 

 

  

 

 

  

 

 

 

See accompanying notes to the unaudited condensed consolidated financial statements.

HISTOGEN INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE

PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT)

(In thousands, except share amounts)

  Convertible
Preferred Stock
  Common Stock  Additional
Paid-in
Capital
  Accumulated
Deficit
  Total
Histogen Inc.
Stockholders’

Equity (Deficit)
  Noncontrolling
Interest
  Total
Equity (Deficit)
 
  Shares  Amount  Shares  Amount 

Balance at June 30, 2020

    $   11,812,493  $1  $65,176  $(55,945 $9,232  $(919 $8,313 

Issuance of common stock, net of issuance costs

        675,480      1,337      1,337      1,337 

Stock-based compensation

              125      125      125 

Net loss

                 (3,249  (3,249  (14  (3,263
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at September 30, 2020

    $   12,487,973  $1  $66,638  $(59,194 $7,445  $(933 $6,512 
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 
  Convertible
Preferred Stock
  Common Stock  Additional
Paid-in
Capital
  Accumulated
Deficit
  Total
Histogen Inc.
Stockholders’

Equity (Deficit)
  Noncontrolling
Interest
  Total
Equity (Deficit)
 
  Shares  Amount  Shares  Amount 

Balance at June 30, 2019

  5,046,154  $39,070   3,327,198  $  $6,640  $(39,929 $(33,289 $(881 $(34,170

Issuance of common stock upon net exercise of stock options

        16,158                   

Stock-based compensation

              115      115      115 

Net loss

                 (1,694  (1,694  (4  (1,698
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at September 30, 2019

  5,046,154  $39,070   3,343,356  $  $6,755  $(41,623 $(34,868 $(885 $(35,753
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

See accompanying notes to the unaudited condensed consolidated financial statements.

HISTOGEN INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE

PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT)

(In thousands, except share amounts)

  Convertible
Preferred Stock
  Common Stock  Additional
Paid-in
Capital
  Accumulated
Deficit
  Total
Histogen Inc.
Stockholders’

Equity
(Deficit)
  Noncontrolling
Interest
  Total
Equity
(Deficit)
 
  Shares  Amount  Shares  Amount 

Balance at December 31, 2019

  5,046,154  $39,070   3,343,356  $  $6,864  $(43,933 $(37,069 $(899 $(37,968

Issuance of common stock upon exercise of stock options

        28,684      40      40      40 

Issuance of common stock to former stockholders of Conatus upon Merger

        3,394,299      18,872      18,872      18,872 

Conversion of convertible preferred stock into common stock upon Merger

  (5,046,154  (39,070  5,046,154   1   39,069      39,070      39,070 

Issuance of common stock, net of issuance costs

        675,480      1,337    1,337      1,337 

Stock-based compensation

              456      456      456 

Net loss

                 (15,261  (15,261  (34  (15,295
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at September 30, 2020

    $   12,487,973  $1  $66,638  $(59,194 $7,445  $(933 $6,512 
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 
 
  Convertible
Preferred Stock
  Common Stock  Additional
Paid-in
Capital
  Accumulated
Deficit
  Total
Histogen Inc.
Stockholders’

Equity
(Deficit)
  Noncontrolling
Interest
  Total
Equity
(Deficit)
 
  Shares  Amount  Shares  Amount 

Balance at December 31, 2018

  4,813,274  $36,683   3,292,104  $  $6,311  $(40,967 $(34,656 $(864 $(35,520

Issuance of Series B convertible

preferred stock for Lordship Indemnification

  16,413   124                      

Issuance of common stock for Lordship Indemnification

        21,885      115      115      115 

Issuance of Series D convertible

preferred stock, net of issuance costs

  49,144   513                      

Issuance of Series D for PUR settlement

  167,323   1,750                      

Issuance of common stock upon net exercise of stock options

        29,367                   

Stock-based compensation

              329      329      329 

Net income

                 (656  (656  (21  (677
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at September 30, 2019

  5,046,154  $39,070   3,343,356  $  $6,755  $(41,623 $(34,868 $(885 $(35,753
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

See accompanying notes to the unaudited condensed consolidated financial statements.

HISTOGEN INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

   Nine Months Ended
September 30,
 
       2020          2019     

Cash flows from operating activities

   

Net loss

  $(15,295 $(677

Adjustments to reconcile net loss to net cash (used in) provided

by operating activities:

   

Acquired in-process research and development

   7,144   1,750 

Depreciation and amortization

   74   107 

Stock-based compensation

   456   329 

Loss on disposal of property and equipment

      7 

Write-off of inventory

   186    

Change in fair value of warrant liabilities

      (77

Changes in operating assets and liabilities:

   

Accounts receivable

   (61  120 

Inventories

   (533  (133

Prepaid expenses and other current assets

   (122  (107

Other assets

   (127  82 

Accounts payable

   (197  132 

Accrued liabilities

   80   (256

Right-of-use asset and lease liabilities, net

   346   (56

Deferred revenue

   69   (826
  

 

 

  

 

 

 

Net cash (used in) provided by operating activities

   (7,980  395 
  

 

 

  

 

 

 

Cash flows from investing activities

   

Cash acquired in connection with the Merger

   12,835    

Cash paid for acquisition related costs

   (1,811   

Cash paid for property and equipment

   (49  (152
  

 

 

  

 

 

 

Net cash provided by (used in) investing activities

   10,975   (152

Cash flows from financing activities

   

Repayment of finance lease obligations

   (5  (25

Proceeds from sales of common stock, net of issuance costs

   1,337    

Proceeds from promissory notes

   500    

Payments on promissory notes

   (500   

Proceeds from the exercise of stock options

   40    

Proceeds from Payroll Protection Program Loan

   467    

Proceeds from the issuance of Series D convertible preferred stock, net

      513 
  

 

 

  

 

 

 

Net cash provided by financing activities

   1,839   488 
  

 

 

  

 

 

 

Net increase in cash, cash equivalents and restricted cash

   4,834   731 

Cash, cash equivalents and restricted cash, beginning of period

   2,075   3,037 
  

 

 

  

 

 

 

Cash, cash equivalents and restricted cash, end of period

  $6,909  $3,768 
  

 

 

  

 

 

 

Reconciliation of cash, cash equivalents and restricted cash to the

consolidated balance sheets

   

Cash and cash equivalents

  $6,649  $3,758 

Restricted cash

   260   10 
  

 

 

  

 

 

 

Total cash, cash equivalents and restricted cash

  $6,909  $3,768 
  

 

 

  

 

 

 

Noncash investing and financing activities

   

Right-of-use asset obtained in exchange for operating lease liability

  $4,481  $619 
  

 

 

  

 

 

 

Right-of-use asset obtained in exchange for finance lease liability

  $  $40 
  

 

 

  

 

 

 

Conversion of convertible preferred stock into common stock

  $39,070  $ 
  

 

 

  

 

 

 

Issuance of common stock to Conatus stockholders

  $18,872  $ 
  

 

 

  

 

 

 

Net assets acquired in Merger

  $710  $ 
  

 

 

  

 

 

 

Acquisition related costs included in accounts payable

  $6  $ 
  

 

 

  

 

 

 

Issuance of Series B preferred stock for Lordship Indemnification (Note 11)

  $  $124 
  

 

 

  

 

 

 

Issuance of common stock for Lordship Indemnification (Note 11)

  $  $115 
  

 

 

  

 

 

 

See accompanying notes to the unaudited condensed consolidated financial statements.

HISTOGEN INC. AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

1. Description of Business, Basis of Presentation and Summary of Significant Accounting Policies

Description of Business

Histogen Inc. (the “Company,” “Histogen,” or the “combined company”), formerly known as Conatus Pharmaceuticals Inc. (“Conatus”), was incorporated in the state of Delaware on July 13, 2005. The Company is a clinical-stage therapeutics company focused on developing potential first-in-class restorative therapeutics that ignite the body’s natural process to repair and maintain healthy biological function. The therapeutics are designed for aesthetic and therapeutic applications based upon the Company’s unique technology that utilizes proteins and growth factors produced by hypoxia-induced multipotent cells. The Company has a robust portfolio of product candidates derived from one core technology process that fulfills market needs without using embryonic stem cells or animal components. The Company’s products are all covered by patented technologies which focus on replacing and regenerating tissues in the body.

The Company’s lead drug candidate, HST-001, is a hair stimulating complex (“HSC”) intended to be a physician-administered therapeutic for alopecia (hair loss). Phase 1 and Phase 1/2 clinical trials of HSC have been completed outside the United States, with results that produced significant efficacy and a clear safety profile and margin. A Phase 1 clinical trial of HSC in the United States under a Food and Drug Administration (“FDA”) approved Investigational New Drug (“IND”) has been completed and reports filed with the FDA in 2019. In 2019, the Company established HST-001 as the program identifier for HSC development and expanded its product pipeline to include HST-002 (dermal filler) and HST-003 (knee cartilage) as its other lead development programs. The Company has also developed a non-prescription topical skin care ingredient that currently generates revenue from customers who formulate the ingredient into their skin care product lines. The Company also retained development and commercialization rights to emricasan, an asset previously developed by Conatus (see Note 6), and on October 26, 2020, the Company entered into a Collaborative Development and Commercialization Agreement (the “Collaboration Agreement”) with Amerimmune LLC (“Amerimmune”), pursuant to which the Company and Amerimmune agreed to jointly develop emricasan, an orally active pan-caspase inhibitor, for the potential treatment of COVID-19 (see Note 12).

Merger between Private Histogen and Conatus Pharmaceuticals Inc. and Name Change

On January 28, 2020, the Company, then operating as Conatus, entered into an Agreement and Plan of Merger and Reorganization, as amended (the “Merger Agreement”), with privately-held Histogen Inc. (“Private Histogen”) and Chinook Merger Sub, Inc., a wholly-owned subsidiary of the Company (“Merger Sub”). Under the Merger Agreement, Merger Sub merged with and into Private Histogen, with Private Histogen surviving as a wholly-owned subsidiary of the Company (the “Merger”). On May 26, 2020, the Merger was completed. Conatus changed its name to Histogen Inc., and Private Histogen, which remains as a wholly-owned subsidiary of the Company, changed its name to Histogen Therapeutics Inc. On May 27, 2020, the combined company’s common stock began trading on The Nasdaq Capital Market under the ticker symbol “HSTO”.

Except as otherwise indicated, references herein to “Histogen,” the “Company,” or the “combined company”, refer to Histogen Inc. on a post-Merger basis, and the term “Private Histogen” refers to the business of privately-held Histogen Inc., prior to completion of the Merger. References to Conatus refer to Conatus Pharmaceuticals Inc. prior to completion of the Merger.

Pursuant to the terms of the Merger Agreement, each outstanding share of Private Histogen common stock outstanding immediately prior to the closing of the Merger was converted into approximately 0.14342 shares of Company common stock (the “Exchange Ratio”), after taking into account the Reverse Stock Split, as defined below. Immediately prior to the closing of the Merger, all shares of Private Histogen preferred stock then outstanding were exchanged into shares of common stock of Private Histogen. In addition, all outstanding options exercisable for common stock of Private Histogen and warrants exercisable for common stock of Private Histogen became options and warrants exercisable for the same number of shares of common stock of the Company multiplied by the Exchange Ratio. Immediately following the Merger, stockholders of Private Histogen owned approximately 71.3% of the outstanding common stock of the combined company.

The transaction was accounted for as a reverse asset acquisition in accordance with generally accepted accounting principles in the United States of America (“GAAP”). Under this method of accounting, Private Histogen was deemed to be the accounting acquirer for financial reporting purposes. This determination was primarily based on the facts that, immediately following the Merger: (i) Private Histogen’s stockholders owned a substantial majority of the voting rights in the combined company, (ii) Private Histogen designated a majority of the members of the initial board of directors of the combined company, and (iii) Private Histogen’s senior management holds all key positions in the senior management of the combined company. As a result, as of the closing date of the Merger, the net assets of the Company were recorded at their acquisition-date relative fair values in the accompanying condensed consolidated financial statements of the Company and the reported operating results prior to the Merger are those of Private Histogen.

Reverse Stock Split and Exchange Ratio

On May 26, 2020, in connection with, and prior to the completion of, the Merger, the Company effected a one-for-ten reverse stock split of its then outstanding common stock (the “Reverse Stock Split”). The par value and the authorized shares of the common stock were not adjusted as a result of the Reverse Stock Split. All of the Company’s issued and outstanding common stock have been retroactively adjusted to reflect this Reverse Stock Split for all periods presented. All issued and outstanding Private Histogen common stock, convertible preferred stock, options and warrants prior to the effective date of the Merger have been retroactively adjusted to reflect the Exchange Ratio for all periods presented.

Liquidity and Going Concern

From inception and through September 30, 2020, the Company has accumulated losses of $59.2 million and expects to incur operating losses and generate negative cash flows from operations for the foreseeable future. As of September 30, 2020, the Company had $6.6 million in cash and cash equivalents.

The Company has not yet established ongoing sources of revenues sufficient to cover its operating costs and will need to continue to raise additional capital to support its future operating activities, including progression of its development programs, preparation for commercialization, and other operating costs. Management’s plans with regard to these matters include entering into a combination of additional debt or equity financing arrangements, government funding, strategic partnerships, collaboration and licensing arrangements, or other similar arrangements. In addition, the Company may fund its losses from operations through the common stock purchase agreement the Company entered into with Lincoln Park in July 2020, for the purchase of up to $10.0 million of the Company’s common stock over the 24 month period of the purchase agreement, $8.5 million of which remains available for sale as of the date these condensed consolidated financial statements were available to be issued (see Note 9), subject to limitations on the amount of securities the Company may sell under its effective registration statement on Form S-3 within any 12 month period. There can be no

assurance that the Company will be able to obtain additional financing on terms acceptable to the Company, on a timely basis or at all. As stated above and more fully discussed in Note 6, the Merger with Conatus was completed on May 26, 2020, which provided the Company approximately $12.8 million in cash and cash equivalents. However, additional funding will be required for the Company to sustain operations beyond twelve months from the date these condensed consolidated financial statements were available to be issued as the Company expects an increase in cash outflows as compared to its historical spend for its planned clinical trial activities over the next twelve months.

The condensed consolidated financial statements have been prepared assuming that the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. Based on the above, there is substantial doubt about the Company’s ability to continue as a going concern within one year from the date the condensed consolidated financial statements are available to be issued. The condensed consolidated financial statements do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets or the amounts and classification of liabilities that may result from the outcome of this uncertainty.

Basis of Presentation and Principles of Consolidation

The condensed consolidated financial statements include the accounts of the Company and its controlled subsidiaries, including Histogen Therapeutics, Inc., and have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). All intercompany balances and transactions have been eliminated upon consolidation.

The Company acquired Centro De Investigacion de Medicina Regenerativa, S.A. de C.V. (“CIMRESA”), a company in Mexico, during 2018 to facilitate a potential clinical development program for HSC. This is a wholly-owned subsidiary intended to pursue registration with the COFEPRIS (Mexico equivalent to FDA). CIMRESA had no operational or financial activity for the three and nine months ended September 30, 2020 and 2019.

The Company holds a majority interest in Adaptive Biologix, Inc. (“AB”, formerly Histogen Oncology, LLC). AB was formed to develop and market applications for the treatment of cancer. The Company consolidates AB into its condensed consolidated financial statements.

Reclassifications

Certain prior period amounts related to the acquisition of in-process research and development assets from the Company’s former unconsolidated affiliate, PUR Biologics, LLC (“PUR”), have been reclassified from research and development expense to acquired in-process research and development expense on the accompanying condensed consolidated statements of operations and cash flows to conform to the current period presentation. In addition, certain prior period amounts have been reclassified from research and development expenses to cost of product revenue due to an immaterial error identified by the Company. These reclassifications have no effect on previously reported net income (loss), Stockholders’ equity (deficit) or cash flows from operating activities.

Unaudited Interim Financial Information

The unaudited condensed consolidated financial statements as of September 30, 2020, and for the three and nine months ended September 30, 2020 and 2019, have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (SEC) and GAAP. Accordingly, these condensed consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of Management, these unaudited

interim condensed consolidated financial statements contain all adjustments necessary, all of which are of a normal and recurring nature, to present fairly the Company’s financial position, results of operations and cash flows. Interim results are not necessarily indicative of results for a full year or future periods. These condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements for the year ended December 31, 2019 included in our prospectus dated April 1, 2020, filed with the Securities and Exchange Commission pursuant to Rule 424(b) under the Securities ExchangeAct, relating to the Registration Statement on Form S-4, as amended (File No. 333-236332).

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and the disclosure of contingent assets and liabilities and contingencies at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the periods presented. Management believes that these estimates and assumptions are reasonable, however, actual results may differ and could have a material effect on future results of operations and financial position. Though the impact of the COVID-19 pandemic to our business and operating results presents additional uncertainty, we continue to use the best information available to us in our critical accounting estimates.

Significant estimates and assumptions include the useful lives of property and equipment, discount rates used in recognizing contracts containing leases, unrecognized tax benefits, reserves for excess or obsolete inventory, stock-based compensation, and best estimate of standalone selling price of revenue deliverables. Actual results may materially differ from those estimates.

Variable Interest Entities

The Company determined that AB is a variable interest entity (“VIE”) and that the Company is its primary beneficiary. The Company holds greater than 50% of the shares and has the authority to manage the business and affairs of the VIE. AB’s other shareholder does not have a controlling interest.

On January 12, 2018, AB was converted into a traditional C corporation, a Delaware corporation, under a Plan of Conversion agreement between the Company and the other member of the limited liability company, Wylde, LLC (“Wylde”). The entity structure change eliminated some of the special rights Wylde had under the LLC charter and gave the Company more control over the voting rights under the new corporate structure. The Plan of Conversion called for 3,800,000 common stock shares of AB to be issued to the Company and Wylde in proportion to their interest in the LLC immediately before the agreement was executed. Contemporaneously, the Company offered to purchase, and Wylde agreed to sell, 100,000 of the AB common shares for $1.00 per share for a total price of $0.1 million. The completion of this transaction among the stockholders of AB resulted in Histogen owning 2,600,000 common shares or approximately 68% of AB.

A VIE is typically an entity for which the Company has less than a 100% equity interest but controls the decision making over the business and affairs of the entity, directs the decisions driving the economic performance of such entity and participates in the profit and losses of such an entity. The Company weighed both quantitative and qualitative information about the different risks and reward characteristics of each entity and the significance of that entity to the consolidating group in the aggregate.

Segment Reporting

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision-maker, the Chief Executive Officer, in making decisions regarding resource allocation and assessing performance. The Company views its operations and manages its business as one operating segment.

Cash, Cash Equivalents and Restricted Cash

The Company considers all highly liquid investments purchased with an original maturity date of ninety days or less to be cash equivalents. Cash and cash equivalents include cash in readily available checking, money market accounts and brokerage accounts.

The Company’s current restricted cash consists of cash held as collateral for the issuer of its credit card accounts. Noncurrent restricted cash consists of collateral for a letter of credit issued as a security deposit for the lease of the Company’s headquarters and is required to be held throughout the lease term.

Risks and Uncertainties

Credit Risk

At certain times throughout the year, the Company may maintain deposits in federally insured financial institutions in excess of federally insured limits. The Company has not experienced any losses in such accounts and believes it is not exposed to significant risk on its cash balances due to the financial position of the depository institutions in which those deposits are held.

Customer Risk

During the three months ended September 30, 2020 and 2019, one customer accounted for 100% and 39% of total revenues, respectively. During the nine months ended September 30, 2020 and 2019, one customer accounted for 100% and 94% of total revenues, respectively. Accounts receivable from the customer was $0.1 million at September 30, 2020 and December 31, 2019.

COVID-19

On January 30, 2020, the World Health Organization (“WHO”) announced a global health emergency because of a new strain of coronavirus originating in Wuhan, China (the “COVID-19 outbreak”) and the risks to the international community as the virus spreads globally beyond its point of origin. In March 2020, the WHO classified the COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally.

The full impact of the COVID-19 outbreak continues to evolve as of the date these condensed consolidated financial statements were available to be issued. As such, it is uncertain as to the full magnitude that the pandemic will have on the Company’s financial condition, liquidity, and future results of operations. Management is actively monitoring the situation on its financial condition, liquidity, operations, customers, suppliers, industry, and workforce. Given the daily evolution of the COVID-19 outbreak and the response to curb its spread, the Company is not able to estimate the effects of the COVID-19 outbreak to its results of operations, financial condition, or liquidity for fiscal year 2020.

On March 27, 2020, President Trump signed into law the Coronavirus Aid, Relief and Economic Security Act (the “CARES Act”). The CARES Act, among other things, includes provisions relating to

refundable payroll tax credits, deferment of employer side social security payments, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations, increased limitations on qualified charitable contributions and technical corrections to tax depreciation methods for qualified improvement property. The Company continues to examine the impact that the CARES Act may have on its business. Currently, the Company is unable to determine the impact that the CARES Act will have on its financial condition, results of operations, or liquidity. The CARES Act also appropriated funds for the U.S. Small Business Administration Paycheck Protection Program (“PPP”) loans that are forgivable in certain situations to promote continued employment, as well as Economic Injury Disaster Loans to provide liquidity to small businesses harmed by COVID-19. Refer to Note 8 — Paycheck Protection Program Loan for further information.

Accounts Receivable

Accounts receivable are generally due within 30 days and are recorded net of the allowance for doubtful accounts. The allowance is based on an analysis of historical bad debt, current receivables aging and expected future write-offs of uncollectible accounts, as well as an assessment of specific identifiable accounts considered at risk or uncollectible. Additions to the allowance for doubtful accounts include provisions for bad debt and deductions from the allowance for doubtful accounts include customer write-offs. Provision for doubtful accounts was not material for all periods presented.

Inventories

Inventories, consisting of raw materials, work in process, and finished goods, are valued at the lower of cost (first-in, first-out method) or net realizable value. The Company writes down excess and obsolete inventory to its estimated net realizable value based on management’s review of inventories on hand compared to estimated future usage and sales, shelf-life and assumptions about the likelihood of obsolescence. The cost components of work in process and finished goods inventories include raw materials, direct labor and an allocation of the Company’s overhead.

Property and Equipment

Property and equipment are reported net of accumulated depreciation and amortization and are comprised of office furniture and equipment, lab and manufacturing equipment, and leasehold improvements. Ordinary maintenance and repairs are charged to expense, while expenditures that extend the physical or economic life of the assets are capitalized. Furniture and all equipment are depreciated over their estimated useful lives, or five years, using the straight-line method. Leasehold improvements are amortized over their estimated useful lives and limited by the remaining term of the building lease, using the straight-line method.

Valuation of Long-Lived Assets

Long-lived assets to be held and used, including property and equipment, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. As of September 30, 2020, the Company has not recognized any impairment to long-lived assets.

Forward Purchase Contract

In late 2011, Private Histogen contracted for research services from EPS Global Research Pte. Ltd. (“EPS”) to conduct clinical trials and compile data from a study that took place in 2011 and 2013. The unpaid amount due for the services was approximately $0.3 million.

On January 26, 2017, Private Histogen and EPS entered into a Debt Settlement and Conversion Agreement (“Settlement Agreement”) whereby Private Histogen paid $50,000 and issued EPS

14,342 shares of Series D convertible preferred stock. The Company is required to repurchase the shares at the higher of the remaining balance due, approximately $0.3 million at September 30, 2020 and December 31, 2019, or the market price of the shares at the time of repurchase, but no later than December 31, 2021. The Company has the sole option to initiate the timing of the repurchase of the shares (which were converted into shares of common stock upon the Merger) before the deadline date.

The Settlement Agreement was treated as debt subject to Accounting Standards Codification (“ASC”) 470, Debt, and a repurchase commitment under ASC 480, Distinguishing Liabilities from Equity, which includes forward purchase contracts. In measuring the gain or loss on the extinguishment of debt under ASC 470, the Company has compared the difference between the net carrying value of the remaining liability against the fair value of the noncash securities, in this case the shares of Series D convertible preferred stock issued to EPS and the forward purchase contract. Based on these parameters, the Company has determined that no gain or loss has been created by the extinguishment of the original liability at January 26, 2017, the date of the agreement, and no effect has been recorded in the accompanying condensed consolidated statements of operations.

The Company determined the fair value of the liability to be approximately $0.3 million which is the value as if the repurchase commitment was exercised immediately. As of September 30, 2020 and December 31, 2019, the fair value of the EPS forward contract remained at approximately $0.3 million and is included in other liabilities in the accompanying condensed consolidated balance sheets.

Convertible Preferred Stock

Prior to the Merger, Private Histogen had shares of convertible preferred stock outstanding that were conditionally redeemable, as the redemption rights were either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control, and were classified as temporary equity.

Comprehensive Income (Loss)

The Company is required to report all components of comprehensive income (loss), including net income (loss), in the accompanying condensed consolidated financial statements in the period in which they are recognized. Comprehensive income (loss) is defined as the change in equity during a period from transactions and other events and circumstances from non-owner sources, including unrealized gains and losses on investments and foreign currency translation adjustments. Net loss and comprehensive loss were the same for all periods presented.

Revenue Recognition

Product and License Revenue

The Company records revenue in accordance with ASC 606, Revenue from Contracts with Customers, whereby revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration expected to be received in exchange for those goods or services. A five-step model is used to achieve the core principle: (1) identify the customer contract, (2) identify the contract’s performance obligations, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations and (5) recognize revenue when or as a performance obligation is satisfied. The Company applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. Shipping charges billed to customers are included in product revenue and the related shipping costs are included in cost of product revenue. The Company applies the revenue recognition standard, including the use of any practical expedients, consistently to contracts with similar characteristics and in similar circumstances (See Note 5).

Grant Awards

In March 2017, the National Science Foundation (“NSF”), a government agency, awarded the Company a research and development grant to develop a novel wound dressing for infection control and tissue regeneration. The Company has concluded this government grant is not within the scope of ASC 606, as government entities generally do not meet the definition of a “customer” as defined by ASC 606. Payments received under the grant are considered conditional, non-exchange contributions under the scope of ASC 958-605,Not-for-Profit Entities — Revenue Recognition, and are recorded as revenue in the period in which such conditions are satisfied. In reaching the determination that such payments should be recorded as revenue, management considered a number of factors, including whether the Company is a principal under the arrangement, and whether the arrangement is significant to, and part of, the Company’s ongoing operations.

In September 2020, the Company was approved for a grant award from the U.S. Department of Defense (“DoD”) in the amount of approximately $2.0 million to partially fund the Company’s planned Phase 1/2 clinical trial of HST-003 for regeneration of cartilage in the knee. Under the terms of the award, the DoD will reimburse the Company for certain allowable costs. The period of performance for the grant award substantially expires in September 2025 and is subject to annual and quarterly reporting requirements. The Company will recognize funding received from the grant award as a reduction of research and development expenses in the period in which qualifying expenses have been incurred, as the Company is reasonably assured that the expenses will be reimbursed and the funding is collectible. For the three and nine months ended September 30, 2020, no qualifying expenses have been incurred and there has been no reduction of research and development expenses related to the award and no amounts have been reimbursed by the DoD under the terms of the award.

Professional Services Revenue

The Company recognizes revenue for professional services which are based upon negotiated rates with the counterparty. Professional services fees are recognized as revenue over time when the underlying services are performed, in accordance with ASC 606, and none of the revenue recognized to date is refundable.

Cost of Product Revenue

Cost of product revenue represents direct and indirect costs incurred to bring the product to saleable condition.

Cost of Professional Services Revenue

Cost of professional services revenue represents the Company’s costs for full-time employee equivalents and actual out-of-pocket costs.

Research and Development Expenses

All research and development costs are charged to expense as incurred. Research and development expenses primarily include (i) payroll and related costs associated with research and development performed, (ii) costs related to clinical and preclinical testing of the Company’s technologies under development, and (iii) other research and development costs including allocations of facility costs.

Acquired In-Process Research and Development Expense

The Company has acquired and may continue to acquire the rights to drug candidates in various stages of development. The up-front payments to acquire a drug candidate are immediately expensed

as acquired in-process research and development, provided that the drug candidate has not obtained regulatory approval for marketing and, absent obtaining such approval, have no alternative future use.

General and Administrative Expenses

General and administrative expenses represent personnel costs for employees involved in general corporate functions, including finance, accounting, legal and human resources, among others. Additional costs included in general and administrative expenses consist of professional fees for legal (including patent costs), audit and other consulting services, travel and entertainment, charitable contributions, recruiting, allocated facility and general information technology costs, depreciation and amortization, and other general corporate overhead expenses.

Patent Costs

The Company expenses all costs as incurred in connection with patent applications (including direct application fees, and the legal and consulting expenses related to making such applications) and such costs are included in general and administrative expenses in the accompanying condensed consolidated statements of operations.

Income Taxes

Income taxes are accounted for under the asset and liability method. Deferred income taxes are recorded for temporary differences between consolidated financial statement carrying amounts and the tax basis of assets and liabilities. Deferred tax assets and liabilities reflect the tax rates expected to be in effect for the years in which the differences are expected to reverse. No income tax expense or benefit was recorded for the three and nine months ended September 30, 2020 and 2019, due to the full valuation allowance on the Company’s net deferred tax assets. A valuation allowance is provided if it is more likely than not that some or all the deferred tax assets will not be realized.

The Company also follows the provisions of accounting for uncertainty in income taxes which prescribes a model for the recognition and measurement of a tax position taken or expected to be taken in a tax return, and provides guidance on derecognition, classification, interest and penalties, disclosure and transition.

The Company’s policy is to recognize interest or penalties related to income tax matters in income tax expense. Interest and penalties related to income tax matters were not material for the periods presented.

Net Loss Per Share

Basic net loss per share attributable to common stockholders is computed by dividing net loss attributable to common stockholders by the weighted-average common shares outstanding during the period, without consideration for potentially dilutive securities. Diluted net loss per share attributable to common stockholders is computed by dividing the net loss attributable to common stockholders by the weighted-average number of common shares and potentially dilutive securities outstanding for the period. For the three and nine months ended September 30, 2020 and 2019, diluted net loss per share attributable to common stockholders is equal to basic net loss per share attributable to common stockholders as common stock equivalent shares from stock options and convertible preferred stock were anti-dilutive.

The following table sets forth outstanding potentially dilutive shares that have been excluded from the calculation of diluted net loss per share attributable to common stockholders because of their anti-dilutive effect (in common stock equivalents):

   September 30,
2020
   September 30,
2019
 

Outstanding stock options

   1,499,123    1,358,588 

Convertible preferred stock

       5,046,213 

Warrants to purchase common stock

   4,929    3,585 

Warrants to purchase convertible preferred stock

       107,565 
  

 

 

   

 

 

 

Total

   1,504,052    6,515,951 
  

 

 

   

 

 

 

Common Stock Valuations

Prior to the Merger, the Company was required to periodically estimate the fair value of common stock with the assistance of an independent third-party valuation expert when issuing stock options and computing its estimated stock-based compensation expense. The assumptions underlying these valuations represented management’s best estimates, which involved inherent uncertainties and the application of significant levels of management judgment.

In order to determine the fair value, the Company considered, among other things, contemporaneous valuations of the Company’s common stock, the Company’s business, financial condition and results of operations, including related industry trends affecting its operations; the likelihood of achieving various liquidity events; the lack of marketability of the Company’s common stock; the market performance of comparable publicly traded companies; and U.S. and global economic and capital market conditions.

Stock-Based Compensation

Stock Options

The Company recognizes stock-based compensation expense over the requisite service period on a straight-line basis. Employee and director stock-based compensation for stock options is measured based on estimated fair value as of the grant date, using the Black-Scholes option pricing model, in calculating the fair value of option grants as of the grant date. The Company uses the following assumptions for estimating fair value of option grants:

Fair Value of Common Stock – The fair value of common stock underlying the option grant is determined based on observable market prices of the Company’s common stock.

Expected Volatility – Volatility is a measure of the amount by which the Company’s share price has historically fluctuated or is expected to fluctuate (i.e., expected volatility) during a period. Due to the lack of an adequate history of a public market for the trading of the Company’s common stock and a lack of adequate company-specific historical and implied volatility data, volatility has been estimated and based on the historical volatility of a group of similar companies that are publicly traded. For these analyses, the Company has selected companies with comparable characteristics, including enterprise value, risk profiles, and position within the industry, and with historical share price information sufficient to meet the expected term of the stock-based awards.

Expected Term – This is the period of time during which the options are expected to remain unexercised. Options have a maximum contractual term of ten years. The Company estimates the expected term of stock options using the “simplified method”, whereby the expected term equals the average of the vesting term and the original contractual term of the underlying option.

Risk-Free Interest Rate – This is the observed yield on zero-coupon U.S. Treasury securities, as of the day each option is granted, with a term that most closely resembles the expected term of the option.

Expected Forfeiture Rate – Forfeitures are recognized as they occur.

Performance-Based Options

Stock-based compensation expense for performance-based options is recognized based on amortizing the fair market value as of the grant date over the periods during which the achievement of the performance is probable. Performance-based options require certain performance conditions to be achieved in order for these options to vest. These options vest on the date of achievement of the performance condition.

Market-Based Options

Stock-based compensation expense for market-based options is recognized on a straight-line basis over the derived service period, regardless of whether the market condition is satisfied. Market-based options subject to market-based performance targets require achievement of the performance target in order for these options to vest. The Company estimates the fair value of market-based options as of the grant date and expected term using a Monte Carlo simulation that incorporates option-pricing inputs covering the period from the grant date through the end of the derived service period. The expected volatility as of the grant date is estimated and based on the historical volatility of a group of similar companies that are publicly traded. The risk-free interest rate is based on the yield on zero-coupon U.S. Treasury securities, as of the day the option is granted, with a term that most closely resembles the expected term of the option.

Recently Issued Accounting Pronouncements

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”). ASU 2019-12 simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. ASU 2019-12 also improves the consistent application, and the simplification, of other areas of Topic 740 by clarifying and amending existing guidance. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years, with early adoption permitted. The Company is currently evaluating the potential impact that this standard may have on its consolidated financial statements and related disclosures.

Recently Adopted Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13,Financial Instruments Credit Losses (Topic 326): Measurements of Credit Losses on Financial Instruments (“ASU 2016-13”), which changes the impairment model for most financial assets and certain other instruments. For trade receivables and other instruments, entities will be required to use a new forward-looking expected loss model that generally will result in the earlier recognition of allowances for losses. For available-for-sale debt securities with unrealized losses, the losses will be recognized as allowances rather than as reductions in the amortized cost of the securities. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, and interim periods within those periods, with early adoption permitted. The Company adopted ASU 2016-13 on January 1, 2020. The adoption of this standard did not have a material impact on the Company’s condensed consolidated financial statements or related disclosures.

In August 2018, the FASB issued ASU No. 2018-13,Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement (“ASU 2018-13”).

ASU 2018-13 removes the valuation processes for Level 3 fair value measurements and adds the disclosure for the range and weighted-average of significant unobservable inputs used to develop Level 3 fair value measurements. ASU 2018-13 is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, with early adoption permitted. The Company adopted ASU 2018-13 on January 1, 2020. The adoption of this standard did not have an impact on the Company’s condensed consolidated financial statements or related disclosures.

2. Inventories

Inventories consisted of the following (in thousands):

   September 30,
2020
   December 31,
2019
 

Raw materials

  $116   $106 

Work in process

   337     
  

 

 

   

 

 

 

Total

  $453   $106 
  

 

 

   

 

 

 

As of September 30, 2020 and December 31, 2019, no finished goods were included in inventories. During the nine months ended September 30, 2020, the Company recorded a write-off of inventory totaling $0.2 million. This amount was recognized as a component of cost of product revenue in the accompanying condensed consolidated statements of operations.

3. Property and Equipment, Net

Property and equipment, net consisted of the following (in thousands):

   September 30,
2020
   December 31,
2019
 

Lab and manufacturing equipment

  $1,235   $1,231 

Leasehold improvements

   845    845 

Office furniture and equipment

   157    157 
  

 

 

   

 

 

 

Total

   2,237    2,233 

Less: accumulated depreciation and amortization

   (1,942   (1,913
  

 

 

   

 

 

 

Property and equipment, net

  $295   $320 
  

 

 

   

 

 

 

Depreciation and amortization expense for the three months ended September 30, 2020 and 2019 were $24,000 and $40,000, respectively. Depreciation and amortization expense for the nine months ended September 30, 2020 and 2019 was $0.1 million.

4. Balance Sheet Details

Prepaid and other current assets consisted of the following (in thousands):

   September 30,
2020
   December 31,
2019
 

Insurance

  $466   $ 

Security deposit

   81     

Clinical research

   13    50 

Other

   139    117 
  

 

 

   

 

 

 

Total

  $699   $167 
  

 

 

   

 

 

 

Other assets consisted of the following (in thousands):

   September 30,
2020
   December 31,
2019
 

Insurance

  $1,016   $ 

Other

   75    69 
  

 

 

   

 

 

 

Total

  $1,091   $69 
  

 

 

   

 

 

 

Accrued liabilities consisted of the following (in thousands):

   September 30,
2020
   December 31,
2019
 

Current portion of finance lease liabilities

  $8   $6 

Compensation

   272    182 

Clinical trial and study related costs

   161    22 

Legal fees

   2    169 

Other

   110    67 
  

 

 

   

 

 

 

Total

  $553   $446 
  

 

 

   

 

 

 

Other liabilities consisted of the following (in thousands):

   September 30,
2020
   December 31,
2019
 

Noncurrent portion of finance lease liabilities

  $25   $31 

Forward purchase contract

   290    290 
  

 

 

   

 

 

 

Total

  $315   $321 
  

 

 

   

 

 

 

5. Revenues

The following is a summary description of the material revenue arrangements, including arrangements that generated revenues during the three and nine months ended September 30, 2020 and 2019.

Edge Systems License and Supply Agreement

In 2014, the Company entered into a license and supply agreement (the “Edge Agreement”), amended May 17, 2018, with Edge Systems LLC (“Edge”), which was terminated in October 2019, to incorporate Histogen’s CCM skin care ingredient into Edge’s cosmetic products. The quantities to be delivered by the Company to Edge under the agreement were variable and the price per unit of CCM supplied to Edge was fixed with no variable consideration. Product returns to date have not been significant and the Company has not considered it necessary to record a reserve for product returns. The Company’s product revenues were recognized at a point in time when the underlying product was delivered to the customer which was when the customer obtained control of the product. Product revenue under this arrangement was $0.2 million and $0.4 million for the three and nine months ended September 30, 2019, respectively, and no product revenue from sales to Edge was recognized during 2020.

Allergan License Agreements

2017 Allergan Amendment

In 2017, the Company entered into a series of agreements (collectively, the “2017 Allergan Agreement”), which ultimately transferred Suneva Medical, Inc.’s license and supply rights of Histogen’s CCM skin care ingredient in the medical aesthetics market to Allergan Sales LLC (“Allergan”) and granted Allergan an exclusive, royalty-free, perpetual, irrevocable, non-terminable and transferable license, including the right to sublicense to third parties, to use the Company’s CCM skin care ingredient in the medical aesthetics market. The 2017 Allergan Agreement also obligated the Company to deliver CCM to Allergan (the “Supply of CCM to Allergan”) in the future as well as share with Allergan any potential future improvements to the Company’s CCM skin care ingredients identified through the Company’s research and development efforts (“Potential Future Improvements”). In consideration for the execution of the agreements, Histogen received a cash payment of $11.0 million and a potential additional payment of $5.5 million if Allergan’s net sales of products containing the Company’s CCM skin care ingredient exceeds $60.0 million in any calendar year through December 31, 2027.

2019 Allergan Amendment

In March 2019, Histogen entered into a separate agreement with Allergan (the “2019 Allergan Amendment”) to amend the 2017 Allergan Agreement in exchange for a one-time payment of $7.5 million to the Company. The agreement broadened Allergan’s license rights, expanding Allergan’s access to certain sales channels where its products incorporating the CCM ingredient can be sold. Specifically, the license was broadened to provide Allergan the exclusive right to sell through the “Amazon Professional” website, or any website or digital platform owned or licensed by Allergan or under the Allergan brand name, and non-exclusive rights to sell on other websites and through brick-and-mortar medical spas and wellness centers (excluding websites and brick-and-mortar stores of luxury brands).

The Company evaluated the 2019 Allergan Amendment under ASC 606 and concluded that Allergan continues to be a customer and that the expanded license is distinct from the 2017 Allergan Agreement. The Company determined the expanded license under the 2019 Allergan Amendment to be functional intellectual property as Allergan has the right to utilize the Company’s CCM skin care ingredient, and that ingredient is functional to Allergan at the time the Company transferred the expanded license.

The standalone selling price of the expanded license was not readily observable since the Company has not yet established a price for this expanded license and the expanded license has not been sold on a standalone basis to any customer. The Company accounted for the 2019 Allergan Amendment as a modification to the 2017 Allergan Agreement. The contract modification was accounted for as if the 2017 Allergan Agreement had been terminated and the new contract included the expanded license as well as the remaining performance obligations that arose from the 2017 Allergan Agreement related to the Supply of CCM to Allergan and Potential Future Improvements.

The total transaction price for the new contract included the $7.5 million from the 2019 Allergan Amendment as well as the amounts deferred as of the 2019 Allergan Amendment execution date for each the Supply of CCM to Allergan and Potential Future Improvements.

The standalone selling price for the Supply of CCM to Allergan was determined based on comparable sales transactions. The standalone selling price of the Potential Future Improvements was estimated at the fully burdened rate of research and development employees cost plus a commercially reasonable markup. The amount of the total transaction price allocated to the expanded license was determined

using the residual approach, as a result of not having a standalone selling price for the expanded license; that is, the total transaction price less the standalone selling prices of the Supply of CCM to Allergan and Potential Future Improvements.

Revenue related to the Supply of CCM to Allergan has been deferred and recognized at the point in time in which deliveries are completed while revenue related to the Potential Future Improvements has been deferred and amortized ratably over the remaining 9-year life of the patent. The Supply of CCM to Allergan under the 2019 Allergan Amendment was entirely fulfilled during the year ended December 31, 2019, resulting in recognized revenue of $0 and $1.5 million ($0.8 million of which was previously deferred) during the three and nine months ended September 30, 2019, respectively. The $7.5 million residual amount of the total transaction price allocated to the expanded license was recognized as license revenue upon transfer of the license to Allergan in March 2019.

2020 Allergan Amendment

In January 2020, the Company further amended the 2019 Allergan Amendment in exchange for a one-time payment of $1.0 million to the Company (the “2020 Allergan Amendment”). The 2020 Allergan Amendment further broadened Allergan’s exclusive and non-exclusive license rights to include products used for or in connection with microdermabrasion. In addition, the Company agreed to provide Allergan with an additional 200 kilograms of CCM (the “Additional Supply of CCM to Allergan”).

The Company evaluated the 2020 Allergan Amendment under ASC 606 and concluded that Allergan continues to be a customer and that the expanded license is distinct from the 2019 Allergan Amendment. The Company determined the expanded license under the 2020 Allergan Amendment to be functional intellectual property as Allergan has the right to utilize the Company’s CCM skin care ingredient, and that ingredient is functional to Allergan at the time the Company transferred the expanded license.

The standalone selling price of the expanded license was not readily observable since the Company has not yet established a price for this expanded license and the expanded license has not been sold on a standalone basis to any customer. The Company accounted for the 2020 Allergan Amendment as a modification to the 2019 Allergan Amendment (which had modified the 2017 Allergan Agreement, as noted above). The contract modification was accounted for as if the 2019 Allergan Amendment had been terminated and the new contract included the expanded license and Additional Supply of CCM to Allergan, as well as the remaining performance obligation related to Potential Future Improvements.

The total transaction price for the new contract included the $1.0 million from the 2020 Allergan Amendment, the future payment for the Additional Supply of CCM to Allergan, as well as the amounts deferred as of the 2020 Allergan Amendment execution date for Potential Future Improvements.

The standalone selling price for the Additional Supply of CCM to Allergan was determined using the observable inputs of historical comparable sales transactions, including the margin from such sales. The Company also considered its reduced expected cost of satisfying this performance obligation based on the current efficiencies within its CCM manufacturing processes. Due to significant efficiencies in the Company’s CCM manufacturing processes, the forecasted cost of CCM production has decreased, while the applied margin was determined by comparison to similar sales transactions in prior years. The standalone selling price of the Potential Future Improvements was estimated at the fully burdened rate of research and development employees cost plus a commercially reasonable markup. The amount of the total transaction price allocated to the expanded license was determined using the residual approach, as a result of not having a standalone selling price for the expanded license; that is, the total transaction price less the standalone selling prices of the Additional Supply of CCM to Allergan and Potential Future Improvements.

Revenue related to the Additional Supply of CCM to Allergan has been deferred and will be recognized at the point in time in which deliveries are completed. Revenue related to the Additional Supply of CCM to Allergan was $0.4 million ($0.1 million of which was previously deferred), during the three and nine months ended September 30, 2020. Revenue related to the Potential Future Improvements has been deferred and amortized ratably over the remaining 9-year life of the patent, for which $5,000 of previously deferred revenue was recognized in revenue during each of the three months ended September 30, 2020 and 2019, and for which $15,000 of previously deferred revenue was recognized in revenue during each of the nine months ended September 30, 2020 and 2019. The $0.9 million residual amount of the total transaction price allocated to the expanded license was recognized as license revenue upon transfer of the license to Allergan in January 2020.

Remaining Performance Obligations and Deferred Revenue

The remaining performance obligations are the Company’s obligations to (1) deliver Additional Supply of CCM to Allergan and (2) share with Allergan any Potential Future Improvements to CCM identified through the Company’s research and development efforts. Deferred revenue recorded for the Additional Supply of CCM to Allergan was $0.1 million and $0 as of September 30, 2020 and December 31, 2019, respectively, while deferred revenue recorded for the Potential Future Improvements was $0.1 million and $0.2 million as of September 30, 2020 and December 31, 2019, respectively. Deferred revenue is classified in current liabilities when the Company’s obligations to supply CCM or provide research for Potential Future Improvements are expected to be satisfied within twelve months of the balance sheet date.

Grant Revenue

In March 2017, the National Science Foundation, a government agency, awarded the Company a research and development grant to develop a novel wound dressing for infection control and tissue regeneration. Grant revenue recognized was $0 and $0.2 million for the three and nine months ended September 30, 2019, respectively, and no grant revenue was recognized during 2020.

Professional Services Revenue

The Company recognizes revenue for professional services which are based upon negotiated rates with the counterparty and are nonrefundable. Professional services fees are recognized as revenue over time as the underlying services are performed. Professional services revenue related to the Company’s assistance in establishing Allergan’s alternative manufacturing facility was $0.1 million for the three months ended September 30, 2020 and 2019 and $0.3 million for the nine months ended September 30, 2020 and 2019.

6. Merger

The Merger, which closed on May 26, 2020, was accounted for as a reverse asset acquisition pursuant to Topic 805, Clarifying the Definition of a Business, as substantially all of the fair value of the assets acquired were concentrated in a group of similar non-financial assets, and the acquired assets did not have outputs or employees. As the assets had not yet received regulatory approval, the fair value attributable to these assets was recorded as acquired in-process research and development (“IPR&D”) expenses in the Company’s condensed consolidated statements of operations for the nine months ended September 30, 2020.

The total purchase price paid in the Merger has been allocated to the net assets acquired and liabilities assumed based on their fair values as of the completion of the Merger. The following summarizes the purchase price paid in the Merger (in thousands, except share and per share amounts):

Number of shares of the combined organization owned by the Company’s pre-Merger stockholders

   3,394,299 

Multiplied by the fair value per share of Conatus common stock (1)

  $5.56 
  

 

 

 

Fair value of consideration issued to effect the Merger

  $18,872 

Transaction costs

   1,817 
  

 

 

 

Purchase price

  $20,689 
  

 

 

 

(1)

Based on the last reported sale price of the Company’s common stock on the Nasdaq Capital Market on May 26, 2020, the closing date of the Merger, and gives effect to the Reverse Stock Split.

The allocation of the purchase price is as follows (in thousands):

Cash acquired

  $12,835 

Net assets acquired

   710 

Acquired IPR&D (2)

   7,144 
  

 

 

 

Purchase price

  $20,689 
  

 

 

 

(2)

Represents the research and development projects of Conatus which were in-process, but not yet completed. This consists primarily of Conatus’ emricasan product candidate. Current accounting standards require that the fair value of IPR&D projects acquired in an asset acquisition with no alternative future use be allocated a portion of the consideration transferred and charged to expense on the acquisition date. The acquired assets did not have outputs or employees.

7. PUR Settlement

In April 2019, Private Histogen entered into a Settlement, Release and Termination Agreement (“PUR Settlement”) with PUR Biologics, LLC and its members which terminated the License, Supply and Operating Agreements between Private Histogen and PUR, eliminated Private Histogen’s membership interest in PUR and returned all in-process research and development assets to Private Histogen (the “Development Assets”). The agreement also provided indemnifications and complete releases by and among the parties. The acquisition of the Development Assets was accounted for as an asset acquisition in accordance with ASC 805-50-50,Acquisition of Assets Rather than a Business.

As consideration for the reacquisition of the Development Assets, Private Histogen compensated PUR with both equity and cash components, including 167,323 shares of Series D convertible preferred stock with a fair value of $1.75 million and a potential cash payout of up to $6.25 million (the “Cap Amount”). Private Histogen paid PUR $0.5 million in upfront cash, forgave approximately $22,000 of accounts receivable owed by PUR to Private Histogen, and settled an outstanding payable of PUR of approximately $23,000 owed to a third-party. The Company is also obligated to make milestone and royalty payments, including (a) a $0.4 million payment upon the unconditional acceptance and approval of a New Drug Application or Pre-Market Approval Application by the US FDA related to the Development Assets, (b) a $0.4 million commercialization milestone upon reaching gross sales (by the Company or licensee) of the $0.5 million of products incorporating the Development Assets, and (c) a five percent (5%) royalty on net revenues collected by Histogen from commercial sales (by the Company or licensee) of products incorporating the Development Assets. The aforementioned cash

payments, along with any future milestone and royalty payments, are all applied against the Cap Amount. In accordance with ASC 450, Contingencies, amounts for the milestone and royalty payments will be recognized when it is probable that the related contingent liability has been incurred and the amount owed is reasonably estimated. No amounts for the milestone and royalty payments have been recorded during the periods ended September 30, 2020 and December 31, 2019.

For the acquisition of the Development Assets, Private Histogen recognized approximately $2.27 million of in-process research and development expense (including the cash payments of $0.5 million and Series D preferred stock issuance of $1.75 million) on the accompanying condensed consolidated statement of operations for the nine months ended September 30, 2019.

8. Paycheck Protection Program Loan

In April 2020, Private Histogen applied for and received loan proceeds in the amount of $0.5 million (the “PPP Loan”) under the PPP as government aid for payroll, rent and utilities. The application for these funds required the Company to, in good faith, certify that the current economic uncertainty made the loan request necessary to support the ongoing operations of the Company. This certification further required the Company to take into account its current business activity and its ability to access other sources of liquidity sufficient to support ongoing operations in a manner that is not significantly detrimental to the business. The certification made by the Company did not contain any objective criteria and is subject to interpretation. Based in part on the Company’s assessment of other sources of liquidity, the uncertainty associated with future revenues created by the COVID-19 pandemic and related governmental responses, and the going concern uncertainty reflected in the Company’s consolidated financial statements, the Company believed in good faith that it met the eligibility requirements for the PPP Loan. If, despite the good-faith belief that given the Company’s circumstances all eligibility requirements for the PPP Loan were satisfied, it is later determined that the Company had violated any applicable laws or regulations or it is otherwise determined that the Company was ineligible to receive the PPP Loan, it may be required to repay the PPP Loan in its entirety and/or be subject to additional penalties and potential liabilities.

On June 5, 2020, the Paycheck Protection Program Flexibility Act was signed into law, extending the PPP Loan forgiveness period from eight weeks to 24 weeks after loan origination, extending the initial deferral period of principal and interest payments from six months to ten months after the loan forgiveness period, reducing the required amount of payroll expenditures from 75% to 60%, removing the prior ban on borrowers taking advantage of payroll tax deferral after loan forgiveness and allowing for the amendment of the maturity date on existing loans from two years to five years.

9. Stockholders’ Deficit

Common Stock

At Market Issuance Sales Agreement with Stifel, Nicolaus & Company, Incorporated

Prior to the Merger, Conatus entered into an At Market Issuance Sales Agreement (the “Sales Agreement”) with Stifel, Nicolaus & Company, Incorporated (“Stifel”), pursuant to which the Conatus could sell from time to time, at its option, up to an aggregate of $35.0 million of shares of its common stock through Stifel, as sales agent. In July 2020, the Company terminated the Sales Agreement with Stifel, with no shares having been issued pursuant to the Sales Agreement.

Common Stock Purchase Agreement with Lincoln Park

In July 2020, the Company entered into a common stock purchase agreement (the “2020 Purchase Agreement”) with Lincoln Park which provides that, upon the terms and subject to the conditions and

limitations in the 2020 Purchase Agreement, Lincoln Park is committed to purchase up to an aggregate of $10.0 million of shares of the Company’s common stock at the Company’s request from time to time during a 24 month period that began in July 2020 and at prices based on the market price of the Company’s common stock at the time of each sale. Upon execution of the 2020 Purchase Agreement, the Company sold 328,516 shares of common stock at $3.04399 per share to Lincoln Park for proceeds of $1.0 million. During the three and nine months ended September 30, 2020 the Company sold an additional 280,000 shares of common stock to Lincoln Park for net proceeds of approximately $0.3 million and as of September 30, 2020, approximately $8.5 million of common stock remains available for sale under the 2020 Purchase Agreement, subject to limitations on the amount of securities the Company may sell under its effective registration statement on Form S-3 within any 12 month period. In addition, in consideration for entering into the 2020 Purchase Agreement and concurrently with the execution of the 2020 Purchase Agreement, the Company issued 66,964 shares of its common stock to Lincoln Park.

Convertible Preferred Stock

In connection with the Merger, all of the outstanding shares of Private Histogen’s convertible preferred stock were converted into 5,046,154 shares of the Company’s common stock. As of December 31, 2019, Private Histogen’s convertible preferred stock is classified as temporary equity on the accompanying condensed consolidated balance sheets in accordance with authoritative guidance for the classification and measurement of potentially redeemable securities whose redemption is based upon certain change in control events outside of Private Histogen’s control, including liquidation, sale or transfer of control of Private Histogen. Private Histogen did not adjust the carrying values of the convertible preferred stock to the liquidation preferences of such shares because the occurrence of any such change of control event was not deemed probable.

The authorized, issued and outstanding shares of convertible preferred stock as of December 31, 2019 consisted of the following:

   Shares
Authorized
   Shares Issued
and
Outstanding
   Liquidation
Preference
   Carrying
Value
 
           (in thousands) 

Series A

   10,000,000    1,360,547   $9,486   $9,486 

Series B

   35,000,000    1,144,567    7,981    9,356 

Series C

   8,000,000    1,075,637    7,500    5,550 

Series D

   20,000,000    1,465,403    15,327    14,678 
  

 

 

   

 

 

   

 

 

   

 

 

 

Total

   73,000,000    5,046,154   $40,294   $39,070 
  

 

 

   

 

 

   

 

 

   

 

 

 

During the nine months ended September 30, 2020, the Company issued no convertible preferred stock. During the nine months ended September 30, 2019, the Company issued 16,413 shares of Series B convertible preferred stock at $6.97 per share and 216,468 shares of Series D convertible preferred stock, of which 167,323 shares related to the PUR Settlement, at $10.46 per share.

General Rights and Preferences of Private Histogen Convertible Preferred Stock

The holders of each series of convertible preferred stock were entitled to receive noncumulative dividends at a rate of 6% per share per annum based on the original issue price. The preferred stock dividends were payable in preference and in priority to any dividends on common stock if or when any dividends had been declared by the Board of Directors. The Company’s Board of Directors have not declared any dividends during the periods presented.

The holders of the Series A, B and C convertible preferred stock were entitled to receive liquidation preferences at the rate of $6.97 per share. The Series D holders were entitled to liquidation preferences at a rate of $10.46 per share. All series holders also had a right to receive declared but unpaid dividends upon a liquidation event. The liquidation preferences to all holders of preferred stock were to have been made pari passu with payments to other series of convertible preferred stockholders and made in preference to any payments to the holders of common stock.

The shares of each series of convertible preferred stock were convertible into an equal number of shares of common stock, at the option of the holder. Likewise, at the election of the holders of the majority of the then outstanding shares of convertible preferred stock, all shares would have automatically converted to an equal number of shares of common stock. Finally, each share of preferred stock was automatically converted into common stock immediately upon the Company’s sale of its common stock in a firm commitment underwritten public offering pursuant to a registration statement under the Securities Act of 1934. You may read1933, as amended, resulting in the receipt by the Company of at least $20.0 million in which the per share price is at least $31.38. The conversion from the public offering would result in the convertible preferred stockholders receiving less than one common share for each of their shares being converted.

The holders of each series of preferred stock were entitled to one vote for each share of common stock into which such preferred stock could then be converted; and copy this informationwith respect to such vote, such holders shall have full voting rights and powers equal to the voting rights and powers of the holders of common stock.

Common Stock Warrants

In 2016, Private Histogen issued warrants to purchase common stock as consideration for settlement of prior liability claims. The warrants for the purchase of up to 3,583 common shares at an exercise price of $23.08 a share expire on July 31, 2021. The warrants remain outstanding and unexercised for the periods presented.

In addition, at September 30, 2020, warrants to purchase 1,346 shares of common stock with an exercise price of $74.30 a share remain outstanding that were issued by Conatus in connection with obtaining financing in 2016. These warrants expire on July 3, 2023.

Stock-Based Compensation

Equity Incentive Plans

On December 18, 2017, Private Histogen established the Histogen Inc. 2017 Stock Plan (the “2017 Plan”). Under the 2017 Plan, Private Histogen was authorized to issue a maximum aggregate of 837,208 shares of common stock with adjustments for unissued or forfeited shares under the predecessor plan (the Histogen Inc. 2007 Stock Plan). In April 2019, Private Histogen amended the 2017 Plan, which increased the number of common stock available for grants by 326,711 shares. The 2017 Plan permitted the issuance of incentive stock options (“ISOs”), non-statutory stock options (“NSOs”) and Stock Purchase Rights. NSOs could be granted to employees, directors or consultants, while ISOs could be granted only to employees. Options granted vest over a maximum period of four years and expire ten years from the date of grant. In connection with the closing of the Merger, no further awards will be made under the 2017 Plan.

In May 2020, in connection with the closing of the Merger, the Company’s stockholders approved the Company’s 2020 Incentive Award Plan (the “2020 Plan”). The maximum number of shares of the Company’s common stock available for issuance under the 2020 Plan equals the sum of (a) 850,000 shares; (b) any shares of common stock of the Company which are subject to awards under the Conatus 2013 Equity Incentive Plan (the “Conatus 2013 Plan”) as of the effective date of the 2020 Plan which become available for issuance under the 2020 Plan after such date in accordance with its

terms; and (c) an annual increase on the first day of each calendar year beginning with the January 1 of the calendar year following the effectiveness of the 2020 Plan and ending with the last January 1 during the initial ten year term of the 2020 Plan, equal to the lesser of (i) five percent of the number of shares of the Company’s common stock outstanding (on an as-converted basis) on the final day of the immediately preceding calendar year, and (ii) such lesser number of shares of the Company’s common stock as determined by the Company’s board of directors.

Additionally, in connection with the closing of the Merger, no further awards will be made under the Conatus 2013 Plan. As of September 30, 2020, 116,091 fully vested options remain outstanding under the Conatus 2013 Plan with a weighted average exercise price of $37.59 per share.

The following summarizes activity related to the Company’s stock options under the 2017 Plan and the 2020 Plan for the nine months ended September 30, 2020:

  Options
Outstanding
  Weighted-
average
Exercise
Price
  Weighted-
average
Remaining
Contractual
Term
(in years)
  Aggregate
Intrinsic
Value
(in thousands)
 

Outstanding at December 31, 2019

  1,362,173  $3.16   6.34  $2,926 

Granted

  124,119  $4.61   

Exercised

  (28,684 $1.40   

Cancelled or forfeited

  (74,576 $4.30   
 

 

 

    

Outstanding at September 30, 2020

  1,383,032  $3.26   5.87  $528 
 

 

 

  

 

 

  

 

 

  

 

 

 

Vested and exercisable at September 30, 2020

  897,647  $2.31   4.39  $528 
 

 

 

  

 

 

  

 

 

  

 

 

 

Chief Executive Officer Stock Options

On January 24, 2019, the Company issued 485,178 stock options to its newly appointed Chief Executive Officer. In accordance with the original award agreement, 40% of the options would vest immediately upon an initial public offering or 45 days following a change in control, as defined in the award agreement, while the remaining 60% are subject to vesting, of which 25% vest on the first anniversary of the grant date and then ratably over the remaining 36 months.

On January 28, 2020, the award agreement was amended, which became effective upon the close of the Merger in May 2020, whereby the 40% of stock options (“Liquidity Option Shares”) subject to vesting upon an initial public offering or 45 days following a change in control will now vest immediately upon meeting certain performance and market condition-based criteria. The vesting of the Liquidity Option Shares is divided into four separate tranches, each vesting 25% of the Liquidity Option Shares, upon: (1) the closing of the proposed merger with Conatus; (2) the date that the market capitalization of the Company exceeds $200.0 million; (3) the date that the market capitalization of the Company exceeds $275.0 million, and; (4) the date that the market capitalization of the Company exceeds $300.0 million. Each vesting tranche represents a unique derived service period and therefore stock-based compensation expense for each vesting tranche is recognized on a straight-line basis over its respective derived service period. Additionally, in the event that the Chief Executive Officer’s employment with the Company is terminated without cause or he resigns for good reason, an additional portion of the stock options award will vest equal to the number of such options which would have vested in the 12 months following the date of such termination.

On May 26, 2020, in connection with the closing of the Merger, 48,517 options of the Liquidity Option Shares became fully vested as the performance condition was achieved. For the three and nine months ended September 30, 2020, the Company recognized $20,000 and $0.1 million, respectively, in total compensation expense related to the performance and market-based options, all of which is recorded in general and administrative expense in the accompanying condensed consolidated statements of operations. As of September 30, 2020, there was $0.4 million of total unrecognized compensation cost related to unvested market condition-based options.

Valuation of Stock Option Awards

The following assumptions were used to calculate the fair value of awards granted to employees, non-employees and directors:

   Three Months Ended
September 30,
  Nine Months Ended
September 30,
 
   2020  2019  2020  2019 

Expected volatility

     70.0  76.3  70.0

Risk-free interest rate

     1.59  0.45  2.54

Expected term (in years)

      6.25   6.25   6.25 

Expected dividend yield

             

The compensation cost that has been included in the accompanying condensed consolidated statements of operations for all stock-based compensation arrangements is detailed as follows (in thousands):

   Three Months Ended
September 30,
   Nine Months Ended
September 30,
 
   2020   2019   2020   2019 

Cost of product revenue

  $(3  $9   $16   $26 

Research and development

   2    9    8    31 

General and administrative

   126    97    432    272 
  

 

 

   

 

 

   

 

 

   

 

 

 

Total

  $125   $115   $456   $329 
  

 

 

   

 

 

   

 

 

   

 

 

 

As of September 30, 2020, total unrecognized compensation cost related to unvested options, including unvested market condition-based options, was approximately $1.5 million which is expected to be recognized over a weighted-average period of 4.0 years.

Common Stock Reserved for Future Issuance

Common stock reserved for future issuance at September 30, 2020 is as follows:

Common stock warrants

4,929

Common stock options issued and outstanding

1,499,123

Common stock available for issuance under the 2020 Plan

725,881

Total

2,229,933

10. Commitments and Contingencies

Leases

In January 2020, Private Histogen entered into a long-term operating lease with San Diego Sycamore, LLC (“Sycamore”) for its headquarters that includes office and laboratory space. The lease commenced

on March 1, 2020 and expires on August 31, 2031, with no options to renew or extend. The lease was accounted for as a modification of Private Histogen’s existing lease with Sycamore as the lease agreement did not grant Private Histogen an additional right-of-use asset.

The terms of the lease agreement include six months of rent abatement at lease commencement and a tenant improvement allowance of up to $2.2 million. The tenant improvements are required to be permanently affixed to the leased office and laboratory space and do not constitute leasehold improvements of the Company. During the construction period of the tenant improvements, the lease agreement requires the Company to relocate its operations to a similar Sycamore property whereby monthly rent is substantially reduced for the duration of the construction period. The lease is subject to additional variable charges for common area maintenance, insurance, taxes and other operating costs. At lease commencement, the Company recognized a right-of-use asset and operating lease liability totaling approximately $4.5 million. The Company used a discount rate based on its estimated incremental borrowing rate to determine the right-of-use asset and operating lease liability amounts to be recognized. The Company determined its incremental borrowing rate based on the term and lease payments of the new operating lease and what it would normally pay to borrow, on a collateralized basis, over a similar term for an amount equal to the lease payments. Operating lease expense is recognized on a straight-line basis over the lease term.

In connection with the closing of the Merger, the Company assumed Conatus’ noncancelable operating lease agreement, as amended, for certain office space with a lease term that expired on September 30, 2020. Upon close of the Merger, the Company recognized a right-of-use asset and operating lease liability in the amount of $0.1 million and $0.2 million, respectively, related to the Conatus lease. Prior to the Merger, Conatus entered into a sub-lease agreement with a third-party to lease the whole office space for the remainder of the lease term. Sublease income was not material for all periods presented.

The Company leases certain office equipment that is classified as a finance lease. As of September 30, 2020, the weighted-average remaining term of the Company’s operating and finance lease was 11 years and 3.7 years, respectively.

The Company recognizes right-of-use assets and lease liabilities at the lease commencement date based on the present value of future minimum lease payments over the lease term. The discount rate used to determine the present value of the lease payments is the rate implicit in the lease unless that rate cannot be readily determined, in which case, the Company utilizes its incremental borrowing rate in determining the present value of the future minimum lease payments. As of September 30, 2020, the weighted-average discount rate for the Company’s operating and finance lease was 12.2% and 10.0%, respectively.

The Company does not record leases with an initial term of 12 months or less on the consolidated balance sheets. Expense for these short-term leases is recognized on a straight-line basis over the lease term. The Company has elected the practical expedient to combine lease and non-lease components into a single component for all classes of underlying assets.

Future minimum payments of lease liabilities were as follows (in thousands):

  Operating Leases  Finance Lease 

2020 (remaining 3 months)

 $60  $3 

2021

  616   10 

2022

  757   10 

2023

  780   10 

2024

  803   5 

Thereafter

  6,010    
 

 

 

  

 

 

 

Total minimum lease payments

  9,026   38 

Less: imputed interest

  (4,277  (5
 

 

 

  

 

 

 

Total future minimum lease payments

  4,749   33 

Less: current obligations under leases

     (8
 

 

 

  

 

 

 

Noncurrent lease obligations

 $4,749  $25 
 

 

 

  

 

 

 

Litigation and Legal Matters

The Company is subject to claims and legal proceedings that arise in the ordinary course of business. Such matters are inherently uncertain, and there can be no guarantee that the outcome of any such matter will be decided favorably to the Company or that the resolution of any such matter will not have a material adverse effect upon the Company’s consolidated financial statements. The Company does not believe that any of such pending claims and legal proceedings will have a material adverse effect on its consolidated financial statements.

The Company has entered into numerous financing arrangements with Lordship Ventures Histogen Holdings LLC (“Lordship”), a related party (See Note 11). During subsequent financing events, Lordship asserted that it has certain rights and that are, in some cases, detrimental to other existing or future investors in the Company. Although the Company believes it has no further obligation to Lordship with respect to prior financing arrangements, there is no guarantee that, if requested, concessions will not be granted or that disputes will not arise with Lordship in the future.

11. Related Parties

Lordship

Lordship, with its predecessor entities along with its principal owner, Jonathan Jackson, have invested and been affiliated with Private Histogen since 2010. As of September 30, 2020 and December 31, 2019, Lordship controlled approximately 19% and 28% of the Company’s outstanding voting shares, respectively, and currently holds two Board of Director seats.

In January 2012, Private Histogen entered into an Indemnification Agreement (the “Lordship Indemnification”) with Lordship whereby Private Histogen granted Lordship special non-dilutive rights. Pursuant to the Indemnification Agreement, Private Histogen was obligated to issue to Lordship additional common stock based on payments or issuance of common stock the Company may make to Proteus Advisors, LLC (“Proteus”). Private Histogen had contracted with Proteus for various advisory services dating back to 2009, and settled the compensation for such services with Proteus in January 2016 through the immediate issuance of freestanding warrants to purchase 64,539 shares of Private Histogen’s Series B convertible preferred stock and a one-time cash payment of $0.3 million upon Private Histogen receiving additional accumulated capital investments of $10.0 million, beginning after

May 1, 2015. In January 2019, Private Histogen issued 21,885 shares of common stock and 16,413 shares of Series B convertible preferred stock to Lordship, to settle its obligation under the Indemnification Agreement.

In November 2012, Private Histogen entered into a Strategic Relationship Success Fee Agreement with Lordship (the “Success Fee Agreement”). The Success Fee Agreement causes certain payments to be made from the Company to Lordship equal to 1% of certain product revenues and 10% of certain license and royalty revenues. The Success Fee Agreement also stipulates that if the Company engages in a merger or sale of all or substantially all (defined as 90% or more) of its assets or equity to a third party, then the Company has the option to terminate the agreement by paying Lordship the fair market value of future payments with the minimum payment being at least equal to the most recent annual payments Lordship has received. The Success Fee Agreement was amended in August 2016, but continues to carry the same rights to certain payments. Private Histogen recognized an expense to Lordship for the three months ended September 30, 2020 and 2019 of $4,000 and $2,000, respectively, and $0.1 million and $0.8 million for the nine months ended September 30, 2020 and 2019, respectively, all of which is included in general and administrative expenses on the accompanying condensed consolidated statements of operations. As of September 30, 2020 and December 31, 2019, there was a balance of $14,000 and $16,000, respectively, paid to Lordship included in other assets on the accompanying condensed consolidated balance sheet in connection with the deferral of revenue from the Allergan license transfer agreements.

Promissory Notes

In April 2020, the Company entered into two promissory notes (the “Notes”), each for $0.3 million, with two stockholders, one of which was a principal owner of the Company. The Notes carried a fixed return of $25,000, due upon maturity. All outstanding principal and interest were due upon the earlier of (1) June 13, 2020 or (ii) 15 days following the consummation of the Merger. In June 2020, the Notes, including principal and interest, was repaid.

Dr. Stephen Chang

Dr. Chang is a Board member and was acting Chief Executive Officer of the Company from April 2017 through January 2019. For the three months ended September 30, 2020 and 2019, Dr. Chang was paid $0 and $0.1 million, respectively, for consulting services and for the nine months ended September 30, 2020 and 2019, Dr. Chang was paid $15,000 and $0.1 million, respectively, for consulting services, all of which is recorded in general and administrative expenses on the accompanying condensed consolidated statements of operations.

12. Subsequent Events

The Company retained rights to emricasan, an orally active pan-caspase inhibitor, which was an asset previously developed by Conatus (see Note 6). The Company has been evaluating alternatives to create opportunities for increasing shareholder value from this asset. On October 26, 2020, the Company entered into a Collaborative Development and Commercialization Agreement (the “Collaboration Agreement”) with Amerimmune LLC (“Amerimmune”), pursuant to which the Company agreed to jointly develop emricasan for the potential treatment of COVID-19. The Company filed and received approval for an Investigational New Drug (“IND”) from the United States Food and Drug Administration (“FDA”) to initiate a Phase 1 study of emricasan in mild Covid-19 patients to assess safety and tolerability. Until such time as a strategic partner assumes responsibility, the Company, in collaboration with Amerimmune, shall be responsible for and shall control all regulatory interactions relating to emricasan. Under the Collaboration Agreement, Amerimmune, at its expense and in collaboration with the Company, shall use commercially reasonable efforts to lead the development

activities for emricasan. Amerimmune shall be responsible for conducting clinical trials and the Company shall provide reasonable quantities of emricasan for such purpose. The Company believes its current supply of emricasan is sufficient to support clinical trials through Phase 2. The parties shall establish a joint development committee to oversee the development of emricasan and a joint partnering committee to oversee commercialization activities for emricasan. Each party shall retain ownership of their legacy intellectual property and responsibility for ongoing patent application prosecution and maintenance costs. In addition, the Company granted Amerimmune an exclusive option, subject to certain terms and conditions, to an exclusive license to develop and commercialize emricasan throughout the world during the term. After exercise of the option, Amerimmune, alone or in conjunction with one or more strategic partners, will use its commercially reasonable efforts to develop, manufacture and commercialize emricasan and the Company and Amerimmune shall equally share the profits.

Events subsequent to the original issuance of the condensed consolidated financial statements (unaudited)

November 2020 Registered Direct Offering

In November 2020, we entered into a securities purchase agreement with several institutional and accredited investors for the sale by us of 2,522,784 shares of our common stock at a purchase price of $1.78375 per share, in a registered direct offering, with H.C. Wainwright & Co., LLC acting as placement agent. Concurrently with the sale of the shares, we also sold unregistered warrants to purchase up to an aggregate of 1,892,088 shares of common stock. The gross proceeds from this offering were $4.5 million.

HISTOGEN INC.

INDEX TO FINANCIAL STATEMENTS

Page

Report of Independent Registered Public Accounting Firm

F-34

Consolidated Balance Sheets

F-35

Consolidated Statements of Operations

F-36

Consolidated Statements of Convertible Preferred Stock and Stockholders’ Deficit

F-37

Consolidated Statements of Cash Flows

F-38

Notes to the Consolidated Financial Statements

F-39

Report of Independent Registered Public Reference RoomAccounting Firm

To the Board of Directors and Stockholders of Histogen, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Histogen, Inc. (“Company”) as of December 31, 2019 and 2018, and the related consolidated statements of operations, convertible preferred stock and stockholders’ deficit and cash flows for each of the two years in the period ended December 31, 2019, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2019 and 2018 and the results of their operations and their cash flows for each of the two years in the period ended December 31, 2019, in conformity with accounting principles generally accepted in the United States of America.

Going Concern Uncertainty

The accompanying financial statements have been prepared assuming that the Company will continue as a going concern. As discussed in Note 2 to the financial statements, the Company has incurred recurring losses from operations and is dependent on future financings to fund operations. These conditions raise substantial doubt about its ability to continue as a going concern. Management’s plan regarding these matters is also described in Note 2. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission 100 F Street, N.E., Room 1580, Washington, D.C. 20549. You mayand the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB and in accordance with auditing standards generally accepted in the United States of America. Those standards require that we plan and perform the audit to obtain informationreasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the operationeffectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

We have served as the Company’s auditor since 2015.

/s/ Mayer Hoffman McCann P.C.

San Diego, California

March 11, 2020

HISTOGEN, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in thousands, except share and per share amounts)

   December 31, 
   2019  2018 

Assets

   

Current assets

   

Cash and cash equivalents

  $2,065  $3,027 

Restricted cash

   10   10 

Accounts receivable, net

   110   250 

Inventories

   106   939 

Prepaid and other current assets

   167   11 
  

 

 

  

 

 

 

Total current assets

   2,458   4,237 

Property and equipment, net

   320   287 

Right-of-use asset

   95    

Other assets

   69   223 
  

 

 

  

 

 

 

Total assets

  $2,942  $4,747 
  

 

 

  

 

 

 

Liabilities, convertible preferred stock and stockholders’ deficit

   

Current liabilities

   

Accounts payable

  $808  $315 

Accrued liabilities

   446   666 

Current portion of lease liabilities

   108    

Current portion of deferred revenue

   19   1,545 

Indemnification liability

      239 

Warrant liabilities

      276 
  

 

 

  

 

 

 

Total current liabilities

   1,381   3,041 

Noncurrent portion of deferred revenue

   138   157 

Other liabilities

   321   386 
  

 

 

  

 

 

 

Total liabilities

   1,840   3,584 
  

 

 

  

 

 

 

Commitments and contingencies (Note 16)

   

Convertible preferred stock, $0.001 par value, authorized shares — 73,000,000 at December 31, 2019 and 2018; issued and outstanding shares — 35,184,882 and 33,561,102 at December 31, 2019 and 2018, respectively; liquidation preference — $40,294 and $37,915 at December 31, 2019 and 2018, respectively

   39,070   36,683 

Stockholders’ deficit

   

Common stock, $0.001 par value; 105,000,000 shares authorized at December 31, 2019 and 2018; 23,311,656 and 22,954,293 shares issued and outstanding at December 31, 2019 and 2018, respectively

   23   23 

Additional paid-in capital

   6,841   6,288 

Accumulated deficit

   (43,933  (40,967
  

 

 

  

 

 

 

Total Histogen, Inc. stockholders’ deficit

   (37,069  (34,656

Noncontrolling interest

   (899  (864
  

 

 

  

 

 

 

Total deficit

   (37,968  (35,520
  

 

 

  

 

 

 

Total liabilities, convertible preferred stock and stockholders’ deficit

  $2,942  $4,747 
  

 

 

  

 

 

 

The accompanying notes are an integral part of these consolidated financial statements.

HISTOGEN, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except share and per share amounts)

   Years Ended December 31, 
           2019                  2018         

Revenue

   

Product revenue

  $3,415  $1,254 

License revenue

   7,519   19 

Grant revenue

   150   300 

Professional services revenue

   370   204 
  

 

 

  

 

 

 

Total revenue

   11,454   1,777 
  

 

 

  

 

 

 

Operating expense

   

Cost of product revenue

   1,893   561 

Cost of professional services revenue

   322   183 

Research and development

   6,345   3,490 

General and administrative

   6,212   3,184 
  

 

 

  

 

 

 

Total operating expense

   14,772   7,418 
  

 

 

  

 

 

 

Loss from operations

   (3,318  (5,641

Other income (expense)

   

Interest income (expense), net

   42   (42

Inducement expense

      (375

Change in fair value of indemnification liability

      (57

Change in fair value of warrant liabilities

   276   (47
  

 

 

  

 

 

 

Loss before income taxes

   (3,000  (6,162

Income tax expense

   1   1 
  

 

 

  

 

 

 

Net loss

   (3,001  (6,163
  

 

 

  

 

 

 

Loss attributable to noncontrolling interest

   (35  (38
  

 

 

  

 

 

 

Net loss available to common stockholders

  $(2,966 $(6,125
  

 

 

  

 

 

 

Net loss per share available to common stockholders, basic and diluted

  $(0.13 $(0.27
  

 

 

  

 

 

 

Weighted-average number of common shares outstanding used to compute net loss per share, basic and diluted

   23,234,436   22,771,508 
  

 

 

  

 

 

 

The accompanying notes are an integral part of these consolidated financial statements.

HISTOGEN, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CONVERTIBLE

PREFERRED STOCK AND STOCKHOLDERS’ DEFICIT

(in thousands, except share amounts)

  Convertible
Preferred Stock
  Common Stock  Additional
Paid-in
Capital
  Accumulated
Deficit
  Total
Histogen, Inc.
Stockholders’
Deficit
  Non-controlling
Interest
  Total
Deficit
 
  Shares  Amount  Shares  Amount 

Balance at December 31, 2017

  29,226,935  $30,064   22,227,930  $22  $5,986  $(34,842 $(28,834 $(826 $(29,660

Issuance of Series B convertible preferred stock for note payable and accrued interest

  2,592,000   4,005                      

Issuance of Series D convertible preferred stock

  1,400,500   2,101                      

Issuance of Series D convertible preferred stock for clinical services

  341,667   513                      

Issuance of common stock upon exercise of stock options

        726,363   1   76      77      77 

Purchase of subsidiary shares from noncontrolling interest

              (100     (100     (100

Stock-based compensation expense

              326      326      326 

Net loss

                 (6,125  (6,125  (38  (6,163
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2018

  33,561,102  $36,683   22,954,293  $23  $6,288  $(40,967 $(34,656 $(864 $(35,520
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Issuance of Series B convertible preferred stock for Lordship Indemnification

  114,445   124                      

Issuance of common stock for Lordship Indemnification

        152,594      115      115      115 

Issuance of Series D convertible preferred stock, net of issuance costs

  342,668   513                      

Issuance of Series D convertible preferred stock for PUR Settlement

  1,166,667   1,750                      

Issuance of common stock upon net exercise of stock options

        204,769                   

Stock-based compensation expense

              438      438      438 

Net loss

                 (2,966  (2,966  (35  (3,001
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2019

  35,184,882  $39,070   23,311,656  $23  $6,841  $(43,933 $(37,069 $(899 $(37,968
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

The accompanying notes are an integral part of these consolidated financial statements.

HISTOGEN, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

  Years Ended December 31, 
      2019          2018     

Cash flows from operating activities

  

Net loss

 $(3,001 $(6,163

Adjustments to reconcile net loss to net cash used in operating activities:

  

Depreciation and amortization

  145   150 

Loss on disposal of property and equipment

  6    

Stock-based compensation expense

  438   326 

Series D convertible preferred stock issued for PUR Settlement

  1,750    

Series D convertible preferred stock issued for clinical services

     363 

Inducement expense

     375 

Write-off of inventory

  155    

Change in fair value of indemnification liability

     26 

Change in fair value of warrant liabilities

  (276  47 

Changes in operating assets and liabilities:

  

Accounts receivable

  140   (179

Inventories

  678   (502

Prepaid expenses and other current assets

  (156  8 

Other assets

  154   31 

Accounts payable

  493   (368

Accrued liabilities

  (196  (360

Right-of-use asset and lease liabilities, net

  (76   

Deferred revenue

  (1,545  (313

Other liabilities

     (57
 

 

 

  

 

 

 

Net cash used in operating activities

  (1,291  (6,616
 

 

 

  

 

 

 

Cash flows from investing activities

  

Cash paid for property and equipment

  (152  (126

Purchase of subsidiary shares from noncontrolling interest

     (100
 

 

 

  

 

 

 

Net cash used in investing activities

  (152  (226
 

 

 

  

 

 

 

Cash flows from financing activities

  

Repayment of notes payable to related parties

  (7  (449

Repayment of finance lease obligations

  (25  (30

Proceeds from the issuance of Series D convertible preferred stock, net

  513   2,101 

Proceeds from exercise of stock options

     67 
 

 

 

  

 

 

 

Net cash provided by financing activities

  481   1,689 
 

 

 

  

 

 

 

Net decrease in cash, cash equivalents and restricted cash

  (962  (5,153

Cash, cash equivalents and restricted cash, beginning of period

  3,037   8,190 
 

 

 

  

 

 

 

Cash, cash equivalents and restricted cash, end of period

 $2,075  $3,037 
 

 

 

  

 

 

 

Reconciliation of cash, cash equivalents and restricted cash to the consolidated balance sheets

  

Cash and cash equivalents

 $2,065  $3,027 

Restricted cash

  10   10 
 

 

 

  

 

 

 

Total cash, cash equivalents and restricted cash

 $2,075  $3,037 
 

 

 

  

 

 

 

Supplemental disclosure of cash flow information

  

Cash paid for interest

 $7  $67 
 

 

 

  

 

 

 

Cash paid for income taxes

 $  $ 
 

 

 

  

 

 

 

Noncash investing and financing activities

  

Right-of-use asset obtained in exchange for operating lease liability

 $619  $ 
 

 

 

  

 

 

 

Right-of-use asset obtained in exchange for new finance lease liability

 $40  $ 
 

 

 

  

 

 

 

Issuance of Series B convertible preferred stock for Lordship Indemnification

 $124  $ 
 

 

 

  

 

 

 

Issuance of common stock for Lordship Indemnification

 $115  $ 
 

 

 

  

 

 

 

Issuance of Series B convertible preferred stock for note payable and accrued interest

 $  $4,005 
 

 

 

  

 

 

 

Issuance of common stock for settlement of trade payables

 $  $10 
 

 

 

  

 

 

 

The accompanying notes are an integral part of these consolidated financial statements.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

1. Organization and Nature of Operations

Histogen, Inc. (“Histogen” or the “Company”) is a regenerative medicine company established as a Delaware Corporation in November 2007. The Company is focused on developing innovative products for aesthetic and therapeutic applications based upon the Company’s unique technology that utilizes proteins and growth factors produced by hypoxia-induced multipotent cells. Histogen has a rich portfolio of products derived from one core technology process that fulfills market needs without using embryonic stem cells or animal components. The Company’s products are all covered by patented technologies which focus on replacing and regenerating tissues in the body.

The Company’s lead drug candidate is a hair stimulating complex (“HSC”) intended to be a physician-administered therapeutic for alopecia (hair loss). Phase 1 and Phase 1/2 clinical trials of HSC have been completed outside the United States, with results that produced significant efficacy and a clear safety profile and margin. A Phase 1 clinical trial of HSC in the United States under a Federal Drug Administration (“FDA”) approved Investigational New Drug (“IND”) has been completed and reports filed with the FDA in 2019. In 2019, the Company established HST-001 as the program identifier for HSC development. The Company expanded its product pipeline in 2019 to include HST-002 (dermal filler) and HST-003 (knee cartilage) as its other lead development programs. The Company has also developed a non-prescription topical skin care ingredient that currently generates revenue from customers who formulate the ingredient into their skin care product lines.

The Company is subject to risks common to other life science companies in the early development stage including, but not limited to, uncertainty of product development and commercialization, lack of marketing and sales history, development by its competitors of new technological innovations, dependence on key personnel, market acceptance of products, product liability, protection of proprietary technology, ability to raise additional financing, and compliance with the Food and Drug Administration and other government regulations. If the Company does not successfully advance its technologies into and through human clinical trials, form partnerships for its programs or license-out its technology, and/or commercialize any of its product candidates, it may be unable to increase its value, generate product revenue, or achieve profitability.

Proposed Merger with Conatus

On January 28, 2020, Histogen entered into the Merger Agreement with Conatus Pharmaceuticals, Inc. (“Conatus”) and Merger Sub. Pursuant to the Merger Agreement, Merger Sub will be merged with and into Histogen, with Histogen continuing as a wholly-owned subsidiary of Conatus and the surviving corporation of the merger. The merger is expected to be accounted for as a reverse asset acquisition in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Histogen will be deemed to be the accounting acquirer for financial reporting purposes. This determination is supported based on the expectations that, immediately following the merger: (i) Histogen stockholders will own a substantial majority of the voting rights of the combined organization; (ii) Histogen will designate a majority (six of eight) of the initial members of the board of directors of the combined organization; and (iii) Histogen’s senior management will hold all key positions in senior management of the combined organization and no employees will be retained from Conatus. The merger is expected to be accounted for as a reverse asset acquisition as the fair value of the acquired preclinical assets is deemed to be substantially concentrated in a group of similar assets that do not meet the definition of a business. Accordingly, for accounting purposes: (i) the merger will be treated as the equivalent of Histogen issuing stock to acquire the net assets of Conatus, (ii) the net

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

assets of Conatus will be recorded based upon the fair values in the financial statements at the time of closing, (iii) the reported historical operating results of the combined company prior to the merger will be those of Histogen and (iv) for periods prior to the merger, shareholders’ equity of the combined company is presented based on the historical equity structure of Conatus.

Consummation of the Merger is subject to certain closing conditions, including, among other things, approval by Histogen’s and Conatus’ stockholders. Should the Merger Agreement be terminated prior to consummation, the Merger Agreement contains certain termination rights for both Histogen and Conatus, and further provides that, upon termination of the Merger Agreement under specified circumstances, either party may be required to pay the other party a termination fee of $500,000, and in some circumstances reimburse the other party’s expenses up to a maximum of $350,000.

Under the terms of the Merger Agreement, all of the Company’s outstanding common and preferred stock will be exchanged for common stock of Conatus and all outstanding options exercisable for common stock and warrants of the Company will be exchanged for options and warrants exercisable for common stock of Conatus.

2. Liquidity and Going Concern

From inception the Company has accumulated losses of $43.9 million and expects to incur operating losses and generate negative cash flows from operations for the foreseeable future. As of December 31, 2019, the Company had $2.1 million in cash and cash equivalents, which is not sufficient to sustain its operations through the second quarter of 2020.

The Company has not yet established ongoing sources of revenues sufficient to cover its operating costs and will need to continue to raise additional capital to support its future operating activities, including progression of its development programs, preparation for commercialization, and other operating costs. Management’s plans with regard to these matters include entering into a combination of additional debt or equity financing arrangements, government funding, strategic partnerships, collaboration and licensing arrangements, or other similar arrangements. There can be no assurance that the Company will be able to obtain additional financing on terms acceptable to the Company, on a timely basis or at all. Additionally, as stated in Note 1 – Organization and Nature of Operations, the Company has entered into a Merger Agreement with Conatus that, if consummated, will provide capital to support the Company’s operating activities beyond the second quarter of 2020. However, additional funding will be required for the Company to sustain operations beyond twelve months from the date the consolidated financial statements were available to be issued as the Company expects an increase in cash outflows as compared to its historical spend for its planned clinical trial activities over the next twelve months.

The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. Based on the above, there is substantial doubt about the Company’s ability to continue as a going concern within one year from the date the consolidated financial statements are available to be issued. The consolidated financial statements do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets or the amounts and classification of liabilities that may result from the outcome of this uncertainty.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

3. Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its controlled subsidiaries and have been prepared in accordance with U.S. GAAP. All intercompany balances and transactions have been eliminated upon consolidation.

The Company acquired Centro De Investigacion de Medicina Regenerativa, S.A. de C.V. (“CIMRESA”), a company in Mexico, during 2018 to facilitate a potential clinical development program for HSC. This is a wholly-owned subsidiary intended to pursue registration with the COFEPRIS (Mexico equivalent to FDA). CIMRESA has no operational or financial activity for the years ended December 31, 2019 and 2018.

The Company holds an interest in Adaptive Biologix, Inc. (“AB”, formerly Histogen Oncology, LLC). AB was formed to develop and market applications for the treatment of cancer. The Company consolidates AB into its consolidated financial statements.

Joint Venture and Variable Interest Entities

The Company determined that AB is a variable interest entity (“VIE”) and that Histogen is its primary beneficiary. The Company holds greater than 50% of the shares and has the authority to manage the business and affairs of the VIE. AB’s other shareholder does not have a controlling interest.

On January 12, 2018, AB was converted into a traditional C corporation, a Delaware corporation, under a Plan of Conversion agreement between the Company and the other member of the limited liability company, Wylde, LLC (“Wylde”). The entity structure change eliminated some of the special rights Wylde had under the LLC charter and gave the Company more control over the voting rights under the new corporate structure. The Plan of Conversion called for 3,800,000 common stock shares of AB to be issued to the Company and Wylde in proportion to their interest in the LLC immediately before the agreement was executed. Contemporaneously, the Company offered to purchase, and Wylde agreed to sell, 100,000 of the AB common shares for $1.00 per share for a total price of $100 thousand. The completion of this transaction among the stockholders of AB resulted in Histogen owning 2,600,000 common shares or approximately 68%.

A VIE is typically an entity for which the Company has less than a 100% equity interest but controls the decision making over the business and affairs of the entity, directs the decisions driving the economic performance of such entity and participates in the profit and losses of such an entity. The Company weighed both quantitative and qualitative information about the different risks and reward characteristics of each entity and the significance of that entity to the consolidating group in the aggregate.

Reclassifications

Certain prior period amounts have been reclassified to conform to the current period presentation. These reclassifications had no effect on previously reported net loss, Stockholders’ deficit or cash flows from operating activities.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and the disclosure of contingent assets and liabilities and contingencies at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the years presented. Management believes that these estimates and assumptions are reasonable, however, actual results may differ and could have a material effect on future results of operations and financial position.

Significant estimates and assumptions include the allowance for doubtful accounts, useful lives of property and equipment, unrecognized tax benefits, potential reserves for excess or obsolete inventory, the fair value of warrant and indemnification liabilities, the fair value of the Company’s common stock, stock-based compensation, and best estimate of selling price of revenue deliverables. Actual results may materially differ from those estimates.

Segment Reporting

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision-maker, the Chief Executive Officer, in making decisions regarding resource allocation and assessing performance. The Company views its operations and manages its business as one operating segment.

Cash, Cash Equivalents and Restricted Cash

The Company considers all highly liquid investments purchased with an original maturity date of ninety days or less to be cash equivalents. Cash and cash equivalents include cash in readily available checking, money market accounts and brokerage accounts. Restricted cash consists of cash held as collateral for the issuer of its credit card accounts.

Concentrations

Credit Risk

The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. The Company has not experienced any losses in such accounts and believes it is not exposed to significant risk on its cash balances due to the financial position of the depository institutions in which those deposits are held.

Customer Risk

For the years ended December 31, 2019 and 2018, one customer accounted for revenues of approximately $10.5 million, or 91% of total revenue, and $860 thousand, or 48% of total revenue, respectively. The accounts receivable balance of the customer was approximately $11 thousand and $21 thousand as of December 31, 2019 and 2018, respectively.

Accounts Receivable

Accounts receivable are generally due within 30 days and are recorded net of the allowance for doubtful accounts. The allowance is based on an analysis of historical bad debt, current receivables

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

aging and expected future write-offs of uncollectible accounts, as well as an assessment of specific identifiable accounts considered at risk or uncollectible. Additions to the allowance for doubtful accounts include provisions for bad debt and deductions from the allowance for doubtful accounts include customer write-offs. Allowance for doubtful accounts was $0 and approximately $22 thousand as of December 31, 2019 and 2018, respectively.

Inventories

Inventories, consisting of raw materials, work in process, and finished goods, are valued at the lower of cost (first-in, first-out method) or net realizable value. The Company writes down excess and obsolete inventory to its estimated net realizable value based on management’s review of inventories on hand compared to estimated future usage and sales, shelf-life and assumptions about the likelihood of obsolescence. The cost components of work in process and finished goods inventories include raw materials, direct labor and an allocation of a portion of the Company’s overhead.

Property and Equipment

Property and equipment are reported net of accumulated depreciation and amortization and are comprised of office furniture and equipment, lab and manufacturing equipment, and leasehold improvements. Ordinary maintenance and repairs are charged to expense, while expenditures that extend the physical or economic life of the assets are capitalized. Furniture and all equipment are depreciated over their estimated economic lives, or five years, using the straight-line method. Leasehold improvements are amortized over their estimated useful lives and limited by the remaining term of the building lease, using the straight-line method.

Valuation of Long-Lived Assets

Long-lived assets to be held and used, including property and equipment, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. The Company has not recognized any impairment to long-lived assets through December 31, 2019.

Warrant Liabilities for Convertible Preferred Stock

The Company accounts for freestanding warrant instruments that either conditionally or unconditionally obligate the issuer to transfer redeemable stock as liabilities regardless of the timing of the redemption feature or price, even though the underlying shares may be classified as permanent or temporary equity. Since the Company’s convertible preferred stock is contingently redeemable, the warrants to purchase shares of convertible preferred stock are accounted for as liabilities. The Company estimates the fair values of the warrants using the Black-Scholes option pricing model. The liabilities for warrants to purchase the convertible preferred stock is remeasured at each balance sheet date with changes to fair value being recognized as a component of other income (expense) in the consolidated statements of operations.

As of December 31, 2019, the warrant liabilities for convertible preferred stock expired unexercised and are no longer outstanding.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Indemnification Liability

The Company estimates the fair value of the indemnification liability using the fair value of the Series B preferred stock and the estimated fair value of the Company’s common stock price at the end of each period. Any resulting increase or decrease in estimated fair value is recorded as a component of other income (expense) in the consolidated statements of operations.

In January 2019, the indemnification liability was settled. See Note 20 – Related Parties for further information.

Fair Value Measurements

ASC 820, Fair Value Measurements, defines fair value, establishes a framework for measuring fair value under generally accepted accounting principles and enhances disclosures about fair value measurements. Fair value is defined under ASC 820 as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value under ASC 820 must maximize the use of observable inputs and minimize the use of unobservable inputs. The standard describes a fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value which are the following:

•    Level 1 — Observable inputs such as quoted price (unadjusted) for identical instruments in active markets.

•    Level 2 — Observable inputs such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, or model derived valuations whose significant inputs are observable.

•    Level 3 — Unobservable inputs that reflect the reporting entity’s own assumptions.

As of December 31, 2019, the Company did not have any assets or liabilities measured at fair value on its consolidated balance sheet. The following table presents the Company’s fair value hierarchy for its liabilities measured at fair value as of December 31, 2018 (in thousands):

     Fair Value Measurements at
Reporting Date Using
 
  December 31,
2018
  Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
  Significant Other
Observable Inputs
(Level 2)
  Significant
Unobservable
Inputs
(Level 3)
 

Indemnification liability

 $239  $  $  $239 

Warrant liabilities

  276         276 
 

 

 

  

 

 

  

 

 

  

 

 

 

Total fair value

 $515  $  $  $515 
 

 

 

  

 

 

  

 

 

  

 

 

 

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

The change in the liabilities measured at fair value using Level 3 unobservable inputs is as follows (in thousands):

   Indemnification
liability
  Warrant
liabilities
 

Balance at December 31, 2017

  $  $229 

Issuance

   182    

Change in fair value

   57   47 
  

 

 

  

 

 

 

Balance at December 31, 2018

  $239  $276 

Change in fair value

      (276

Settlement

   (239   
  

 

 

  

 

 

 

Balance at December 31, 2019

  $  $ 
  

 

 

  

 

 

 

The following inputs were used in determining the fair value of the indemnification and warrant liabilities valued using the Black-Scholes-Merton option pricing model:

December 31, 2018

Expected volatility

59.0

Risk-free interest rate

2.6

Expected term (in years)

1.0

Expected dividend yield

0.0

Convertible Preferred Stock

Convertible preferred stock subject to mandatory redemption is classified as a liability and measured at fair value and is included as a component of other liabilities in the accompanying consolidated balance sheets. See Note 11 – Forward Purchase Contract for further information.

Convertible preferred stock that is conditionally redeemable (including preferred stock that has redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control) is classified as temporary equity.

Comprehensive Loss

The Company is required to report all components of comprehensive loss, including net loss, in the consolidated financial statements in the period in which they are recognized. Comprehensive loss is defined as the change in equity during a period from transactions and other events and circumstances from non-owner sources, including unrealized gains and losses on investments and foreign currency translation adjustments. Net loss and comprehensive loss were the same for the years ended December 31, 2019 and 2018.

Revenue Recognition

Product and License Revenue

The Company records revenue in accordance with ASC 606, Revenue from Contracts with Customers (“ASC 606”), which was adopted on January 1, 2018, using the modified retrospective method. Under the new standard, revenue is recognized when a customer obtains control of promised goods or

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

services, in an amount that reflects the consideration expected to be received in exchange for those goods or services. A five-step model is used to achieve the core principle: (1) identify the customer contract, (2) identify the contract’s performance obligations, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations and (5) recognize revenue when or as a performance obligation is satisfied. The Company applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. Shipping charges billed to customers are included in product revenue and the related shipping costs are included in cost of product revenue. The Company applies the revenue recognition standard, including the use of any practical expedients, consistently to contracts with similar characteristics and in similar circumstances. See Note 10 – Revenue for further information.

Grant Revenue

In March 2017, the National Science Foundation (“NSF”), a government agency, awarded the Company a research and development grant to develop a novel wound dressing for infection control and tissue regeneration. The Company has concluded this government grant is not within the scope of ASC 606, as government entities generally do not meet the definition of a “customer” as defined by ASC 606. Payments received under the grant are considered conditional, non-exchange contributions under the scope of ASC 958-605,Not-for-Profit Entities – Revenue Recognition, and are recorded as revenue in the period in which such conditions are satisfied. In reaching the determination that such payments should be recorded as revenue, management considered a number of factors, including whether the Company is a principal under the arrangement, and whether the arrangement is significant to, and part of, the Company’s ongoing operations.

Professional Services Revenue

The Company recognizes revenue for professional services which are based upon negotiated rates with the counterparty. Professional services fees are recognized as revenue over time when the underlying services are performed, in accordance with ASC 606, and none of the revenue recognized to date is refundable.

Cost of Product Revenue

Cost of product revenue represents direct and indirect costs incurred to bring the product to saleable condition, including write-offs of inventory.

Cost of Professional Services Revenue

Cost of professional services revenue represents the Company’s costs for full-time employee equivalents (“FTE”) and actual out-of-pocket costs.

Research and Development Expenses

All research and development costs are charged to expense as incurred. Research and development expenses primarily include (i) payroll and related costs associated with research and development performed, (ii) costs related to clinical and preclinical testing of the Company’s technologies under development, and (iii) other research and development including allocations of facility costs.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Acquired In-Process Research and Development Expense

The Company has acquired and may continue to acquire the rights to drug candidates in various stages of development. The up-front payments to acquire a drug candidate are immediately expensed as acquired in-process research and development, provided that the drug candidate has not obtained regulatory approval for marketing and, absent obtaining such approval, have no alternative future use.

Patent Costs

The Company expenses all costs as incurred in connection with patent applications (including direct application fees, and the legal and consulting expenses related to making such applications) and such costs are included in general and administrative expenses in the accompanying consolidated statements of operations.

General and Administrative Expenses

General and administrative expenses represent personnel costs for employees involved in general corporate functions, including finance, accounting, legal and human resources, among others. Additional costs included in general and administrative expenses consist of professional fees for legal (including patent costs), audit and other consulting services, travel and entertainment, charitable contributions, recruiting, allocated facility and general information technology costs, depreciation and amortization, and other general corporate overhead expenses.

Income Taxes

Income taxes are accounted for under the asset and liability method. Deferred income taxes are recorded for temporary differences between consolidated financial statement carrying amounts and the tax basis of assets and liabilities. Deferred tax assets and liabilities reflect the tax rates expected to be in effect for the years in which the differences are expected to reverse. A valuation allowance is provided if it is more likely than not that some or all the deferred tax assets will not be realized.

The Company also follows the provisions of accounting for uncertainty in income taxes which prescribes a model for the recognition and measurement of a tax position taken or expected to be taken in a tax return, and provides guidance on derecognition, classification, interest and penalties, disclosure and transition.

The Company’s policy is to recognize interest or penalties related to income tax matters in income tax expense. Interest and penalties related to income tax matters were not material for the periods presented.

Net Loss Per Share

Basic net loss per common share is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of common shares outstanding during the period, without consideration for potentially dilutive securities. Diluted net loss per share is computed by dividing the net loss attributable to common stockholders by the weighted-average number of common shares and potentially dilutive securities outstanding for the period. The calculation for net loss per share gives effect to the dilutive securities under the treasury stock method. For the years ended

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

December 31, 2019 and 2018, there is no difference in the number of shares used to compute basic and diluted net loss per share due to the Company’s net loss position.

The following table sets forth potentially dilutive shares that have been excluded from the calculation of net loss per share because of their anti-dilutive effect:

       Years Ended December 31,     
           2019                   2018         

Common stock options issued and outstanding

   9,497,923    6,150,000 

Shares issuable upon conversion of convertible preferred stock

   35,184,882    33,561,102 

Warrants to purchase common stock

   25,000    25,000 

Warrants to purchase convertible preferred stock

       950,000 
  

 

 

   

 

 

 

Total anti-dilutive shares

   44,707,805    40,686,102 
  

 

 

   

 

 

 

Common Stock Valuations

The Company is required to periodically estimate the fair value of common stock when issuing stock options and computing its estimated stock-based compensation expense. The fair value of common stock was determined on a periodic basis, with the assistance of an independent third-party valuation expert. The assumptions underlying these valuations represented management’s best estimates, which involved inherent uncertainties and the application of significant levels of management judgment.

The fair value of the common stock underlying the Company’s stock options was estimated at each grant date. The Company’s Board of Directors intended all options granted to be exercisable at a price per share not less than the estimated per share fair value of common stock underlying those options on the date of grant.

In order to determine the fair value, the Company considered, among other things, contemporaneous valuations of the Company’s common stock, the Company’s business, financial condition and results of operations, including related industry trends affecting its operations; the likelihood of achieving a liquidity event, such as an initial public reference roomoffering, or IPO, or sale, given prevailing market conditions; the lack of marketability of the Company’s common stock; the market performance of comparable publicly traded companies; and U.S. and global economic and capital market conditions.

Stock-Based Compensation

Pursuant to ASC 718, Stock Compensation, the Company accounts for stock-based compensation with employees and directors by callingestimating the fair value on the date of grant and recognizing compensation expense over the requisite service period on a straight-line basis. The Company recognizes forfeitures related to stock-based compensation as they occur.

The Company estimates the fair value of stock option awards to employees, directors and non-employees using the Black-Scholes option pricing model, which requires the input of highly subjective assumptions, including (a) the risk-free interest rate, (b) the expected stock volatility, (c) the expected term of the award, and (d) the expected dividend yield. Due to the lack of an adequate history of a public market for the trading of the Company’s common stock and a lack of adequate company-specific historical and implied volatility data, volatility has been estimated and based on the historical

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

volatility of a group of similar companies that are publicly traded. For these analyses, the Company has selected companies with comparable characteristics, including enterprise value, risk profiles, and position within the industry, and with historical share price information sufficient to meet the expected life of the stock-based awards. The Company has estimated the expected life of employee stock options using the “simplified” method, whereby the expected life equals the average of the vesting term and the original contractual term of the option. The expected life of non-employee stock options has been estimated based on the contractual term of the option. The risk-free interest rates for periods within the expected life of the option are based on the yields of zero-coupon U.S. treasury securities.

Recently Issued Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (“FASB”) or other standard setting bodies that are adopted by the Company as of the specified effective date.

In June 2016, the FASB issued ASU 2016-13,Financial Instruments Credit Losses (Topic 326): Measurements of Credit Losses on FinancialInstruments, which changes the impairment model for most financial assets and certain other instruments. For trade receivables and other instruments,entities will be required to use a new forward-looking expected loss model that generally will result in the earlier recognition of allowances for losses. For available-for-sale debt securities with unrealized losses, the losses will be recognized as allowances rather than as reductions in the amortized cost of the securities. This guidance is effective for annual periods beginning after December 15, 2019, and interim periods within those periods, with early adoption permitted. The Company adopted ASU 2016-13 on January 1, 2020, which did not result in a material impact to its consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13,Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the DisclosureRequirements for Fair Value, which modifies the disclosures for transfers between Level 1 and Level 2 of the fair value hierarchy, modifies the Level 3disclosure requirements for non-public entities and requires additional disclosure for Level 3 fair value hierarchy. The amendment is effective for annual periods beginning after December 15, 2019, and interim periods within those periods, with early adoption permitted. The Company adopted ASU 2018-13 on January 1, 2020, which did not result in a material impact to its consolidated financial statements.

In December 2019, the FASB issued ASU 2019-12,Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which is intended to simplify various aspects related to accounting for income taxes. The pronouncement is effective for annual periods beginning after December 15, 2020, and interim periods within those periods, with early adoption permitted. The Company is in the process of determining the impact the adoption will have on its consolidated financial statements and whether to early adopt the new guidance.

In January 2020, the FASB issued ASU 2020-01,Investments – Equity Securities (Topic 321), Investments – Equity Method and Joint Ventures(Topic 323), and Derivatives and Hedging (Topic 815) – Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 (a consensus of the Emerging Issues Task Force), which clarifies the interaction of the accounting for equity securities, investments accounted for under the equity method,and certain forward contracts and purchased options. This update is effective for annual periods beginning after December 15, 2020, and interim periods within those periods, with early adoption permitted. The Company is in the process of determining the impact the adoption will have on its consolidated financial statements and whether to early adopt the new guidance.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Recently Adopted Accounting Pronouncements

In February 2016, the FASB issued ASU 2016-02,Leases (Topic 842), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e., lessees and lessors). The new standard requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase by the lessee. This classification will determine whether lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease, respectively. A lessee is also required to record a right of use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. Topic 842 supersedes the previous leases standard Topic 840, Leases. In July 2018, the FASB issued ASU 2018-11,Leases (Topic 842): Targeted Improvements, which provides a new transition option in which an entity initially applies ASU 2016-02 at the adoptiondate and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The standard is effective for fiscal years beginning after December 15, 2018, with early adoption permitted. The Company adopted this standard on January 1, 2019 using the modified retrospective approach. The adoption of this standard did not result in a cumulative effect adjustment to retained earnings. The Company elected the “package of practical expedients,” which permits the Company to not reassess under the new standard its prior conclusions about lease identification, lease classification and initial direct costs. The Company did not elect the practical expedient for the use-of-hindsight in determining the lease term of its leases. See Note 9 – Leases for further information.

4. Inventories

Inventories consisted of the following components (in thousands):

   December 31, 
   2019   2018 

Raw materials

  $106   $98 

Work in process

       841 

Finished goods

        
  

 

 

   

 

 

 

Inventories

  $106   $939 
  

 

 

   

 

 

 

During the year ended December 31, 2019, the Company recorded a write-off of inventory totaling $155 thousand in connection with the termination of its supply agreement with Edge Systems LLC. See Note 10 – Revenue for further information. This amount was reported as a component of cost of product revenues in the accompanying consolidated statements of operations.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

5. Property and Equipment

Property and equipment consisted of the following (in thousands):

   Years Ended December 31, 
       2019           2018     

Leasehold improvements

  $845   $840 

Lab and manufacturing equipment

   1,231    1,084 

Office furniture and equipment

   157    131 
  

 

 

   

 

 

 

Total

   2,233    2,055 

Less: accumulated depreciation and amortization

   (1,913   (1,768
  

 

 

   

 

 

 

Property and equipment, net

  $320   $287 
  

 

 

   

 

 

 

Depreciation and amortization expense were approximately $145 thousand and $150 thousand for the years ended December 31, 2019 and 2018, respectively.

6. Investment in PUR

As of December 31, 2018, the Company held less than a 50% interest in an investment in non-marketable equity instruments of a private company, PUR Biologics, LLC (“PUR”). PUR was formed to develop and market applications along with products in the surgical/orthopedic and device markets. The Company’s investment in PUR provided the Company with significant influence, but not control, over the investee and had a carrying value of $0 on the consolidated balance sheets as of December 31, 2018. Further, as the Company had no obligation to absorb losses or liabilities of the investee or contribute assets to the investee, no earnings or losses were reported in its consolidated statements of operations for the year ended December 31, 2018.

In April 2019, the Company entered into a Settlement, Release and Termination Agreement with PUR and its members (“PUR Settlement”) which terminated the License, Supply and Operating Agreements between Histogen and PUR, eliminated Histogen’s membership interest in PUR and returned all in-process research and development assets to Histogen (the “Development Assets”). The agreement also provided indemnifications and complete releases by and among the parties. The acquisition of the Development Assets was accounted for as an asset acquisition in accordance with ASC 805-50-50,Acquisition of Assets Rather than a Business.

As consideration for the reacquisition of the Development Assets, Histogen compensated PUR with both equity and cash components, including 1,166,667 shares of Series D convertible preferred stock with a fair value of $1.75 million and a potential cash payout of up to $6.25 million (the “Cap Amount”). The Company paid PUR $500 thousand in upfront cash, forgave approximately $22 thousand of accounts receivable owed by PUR to the Company, and settled an outstanding payable of PUR of approximately $23 thousand owed to a third-party. The Company is also obligated to make milestone and royalty payments, including (a) a $400 thousand upon the unconditional acceptance and approval of a New Drug Application or Pre-Market Approval Application by the US FDA related to the Development Assets, (b) a $400 thousand commercialization milestone upon reaching gross sales (by the Company or licensee) of the $500 thousand of products incorporating the Development Assets, and (c) a five percent (5%) royalty on net revenues collected by Histogen from commercial sales (by the Company or licensee) of products incorporating the Development Assets. The aforementioned

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

cash payments, along with any future milestone and royalty payments, are all applied against the Cap Amount. In accordance with ASC 450, Contingencies, amounts for the milestone and royalty payments will be recognized when it is probable that the related contingent liability has been incurred and the amount owed is reasonably estimated. No amounts for the milestone and royalty payments have been recorded during the years ended December 31, 2019 and 2018.

For the acquisition of the Development Assets, the Company recognized approximately $2.27 million in research and development expense (including the cash payments of $523 thousand and Series D preferred stock issuance of $1.75 million) on the consolidated statement of operations for the year ended December 31, 2019.

7. Balance Sheet Details

Accrued liabilities consist of the following (in thousands):

   December 31,
2019
   December 31,
2018
 

Current portion of notes payable – related party

  $   $7 

Accrued interest – related party

       2 

Current portion of finance lease liabilities

   6    25 

Accrued compensation

   182    86 

Other

   258    546 
  

 

 

   

 

 

 

Total

  $446   $666 
  

 

 

   

 

 

 

Other liabilities consist of the following (in thousands):

    
   December 31,
2019
   December 31,
2018
 

Noncurrent portion of finance lease liabilities

  $31   $7 

Forward purchase contract

   290    290 

Noncurrent portion of deferred rent

       89 
  

 

 

   

 

 

 

Total

  $321   $386 
  

 

 

   

 

 

 

8. Notes Payable – Related Parties

Lordship

On December 7, 2015, Lordship Ventures Histogen Holdings LLC (“Lordship”) made a $25 thousand advance to the Company that was later formalized into a note on February 15, 2016. Additional advances made by Lordship in early 2016 in the amounts of $25 thousand and $50 thousand were formalized into notes dated March 20, 2016 and April 21, 2016, respectively. The Lordship notes carried an interest rate of 10% per annum and both the principal and accrued interest were due the earlier of (i) the completion by Histogen of a transaction in which it raises a minimum of $3 million of equity capital or (ii) December 31, 2017. In connection with the notes, the Company also issued warrants on February 15, 2016, March 20, 2016 and April 21, 2016 to Lordship for the right to

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

purchase 50,000, 50,000 and 100,000 shares of Series D convertible preferred stock, respectively, as additional consideration. The strike price of all three Lordship warrants were at $1.50 per share and expired unexercised on December 31, 2018.

Since the Lordship warrants were issued in conjunction with the Lordship notes, the value of the warrants creates a discount against the face value amounts of the notes. The fair value of the warrants was determined to be approximately $4 thousand for the February 15 warrants, approximately $5 thousand for the March 20 warrants and approximately $10 thousand for the April 21 warrants, respectively, using the Black-Scholes option pricing model. The discounts on the carrying value of the notes have been amortized over the life of each of the notes using the effective interest method.

On August 10, 2016, in conjunction with the Huapont investment transaction, the Lordship notes were modified through the Conversion, Termination and Release Agreement (“CTRA”) as of that date. The CTRA called for the extension of the due date of the two remaining outstanding Lordship notes to July 25, 2018. With these modifications it was determined that the present value of the cash flows of the original Lordship notes had changed by more than 10% and in accordance with ASC 470, Debt, was treated as an early extinguishment of the notes as of August 10, 2016.

During the year ended December 31, 2018, the final payment was made to extinguish the notes and accrued interest thereby relieving Histogen of its obligation.

Employees

On January 14, 2016, Dr. Naughton advanced approximately $7 thousand to AB as an operations bridge loan. The loan calls for interest to be accrued at 10% per annum but has not been formalized. During the year ended December 31, 2019, the final payment was made to extinguish the note payable to Dr. Naughton thereby relieving Histogen of its obligation.

The Company had amounts outstanding with various employees for deferred compensation. On October 31, 2016 certain employees, including Dr. Naughton, entered into compensation deferral agreements whereby employee promissory notes were issued by the Company for the outstanding amounts as of that date. These notes called for simple interest to accrue as of October 31, 2016 at 5% per annum with a due date of December 31, 2018. During the year ended December 31, 2018, the final payment was made to extinguish the promissory notes and accrued interest thereby relieving the Company of its obligation.

Series B Convertible Notes

The Company entered into Series B Senior Secured Convertible Notes payable on demand between May 19 and December 13, 2012 (the “period”). Over the course of this period, in tranches ranging from $11 thousand to $400 thousand, Lordship advanced approximately $2.6 million with a 10% interest rate per annum, convertible into Series B convertible preferred stock at $1.00 per share at the option of the holder. In a later agreement dated November 19, 2012, each of the smaller notes were swept up into a larger omnibus note totaling approximately $2.6 million. These notes were secured by the patent and intellectual property portfolios of the Company. On August 10, 2016, in connection with the Huapont investment transaction through the CTRA, the “on demand” terms were changed to a due date of February 1, 2018.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

On February 1, 2018, pursuant to the First Amendment to the CTRA, the Company and Lordship agreed to have their Series B Senior Secured Convertible Notes outstanding converted into Series B convertible preferred stock at $1.00 per share. Under this amendment, the definition of the trigger amount was changed, for which a $375 thousand payment was made to Lordship. The payment was classified as an inducement expense as a component of other income (expense) in the consolidated statements of operations. Pursuant to the change of the definition, the Series B Senior Secured Convertible Notes were converted to Series B convertible preferred stock, all accumulated accrued interest as of February 1, 2018 of approximately $1.4 million was forgiven, and the lien on the Company’s patent and intellectual property portfolios securing the notes was removed. The principal and the interest forgiven were recognized as a capital contribution upon conversion.

9. Leases

As described above in Note 3 – Recently Adopted Accounting Pronouncements, the Company adopted Topic 842 as of January 1, 2019. Prior period amounts have not been adjusted and continue to be reported in accordance with the Company’s historic accounting under Topic 840.

The Company leases office space and office equipment which are classified as an operating lease and finance lease, respectively. The office space lease is subject to additional variable charges for common area maintenance and other variable costs. As of December 31, 2019, the weighted-average remaining term of the Company’s operating and finance leases was 0.2 years and 4.5 years, respectively.

Right-of-use assets and lease liabilities are recognized at the lease commencement date based on the present value of future minimum lease payments over the lease term. The discount rate used to determine the present value of the lease payments is the rate implicit in the lease unless that rate cannot be readily determined, in which case, the Company utilizes its incremental borrowing rate in determining the present value of the future minimum lease payments. The incremental borrowing rate is equal to the rate of interest that the Company would have to pay to borrow on a collateralized basis over a similar term in an amount equal to the lease payments in a similar economic environment. On January 1, 2019, the Company recognized an initial right-of-use asset and lease liability of $619 thousand and $707 thousand, respectively, related to the Company’s office space. As of December 31, 2019, the weighted-average discount rate of the Company’s operating and finance lease were 12.0% and 10.0%, respectively.

The Company’s office space includes an option to extend the lease for one five-year term. This option was not included in the determination of the right-of-use asset or corresponding lease liability as the Company did not consider it reasonably certain that it would exercise such option.

The Company does not record leases with an initial term of 12 months or less on the balance sheet. Expense for these short-term leases is recognized on a straight-line basis over the lease term. The Company has elected the practical expedient to combine lease and nonlease components into a single component for all classes of underlying assets.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

The Company’s lease assets and lease liabilities were as follows (in thousands):

   

Balance Sheet Classification

  December 31,
2019
 

Assets

    

Operating lease

  Right-of-use asset  $95 

Finance leases

  Property and equipment, net   37 
    

 

 

 

Total lease assets

    $132 
    

 

 

 

Liabilities

    

Current

    

Operating lease liability

  Current portion of lease liability  $108 

Finance lease liabilities

  Accrued liabilities   6 
    

 

 

 

Total current liabilities

     114 

Noncurrent

    

Operating lease liability

  Noncurrent portion of lease liability    

Finance lease liabilities

  Other liabilities   31 
    

 

 

 

Total noncurrent liabilities

     31 
    

 

 

 

Total lease liabilities

    $145 
    

 

 

 

The components of lease expense were as follows (in thousands):

   

Statement of Operations Classification

 

Operating lease cost:

    
  Cost of product revenue  $165 
  Research and development   245 
  General and administrative   160 
    

 

 

 

Total operating lease cost

     570 
    

 

 

 

Finance lease cost:

    

Amortization of right-of-use assets

  Property and equipment, net   25 

Interest on lease liabilities

  Interest expense   5 
    

 

 

 

Total finance lease cost

     30 
    

 

 

 

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Future minimum payments of lease liabilities were as follows (in thousands):

   Operating Lease  Finance Leases 

2020

  $108  $10 

2021

      10 

2022

      10 

2023

      10 

2024

      6 
  

 

 

  

 

 

 

Total minimum lease payments

   108       46 

Less: imputed interest

      (9
  

 

 

  

 

 

 

Total future minimum lease payments

   108   37 

Less: current obligations under leases

       (108  (6
  

 

 

  

 

 

 

Noncurrent lease obligations

  $  $31 
  

 

 

  

 

 

 

Supplemental cash flow information related to leases were as follows (in thousands):

Cash paid for amounts included in the measurement of lease liabilities

  

Operating cash flows from operating lease

  $570 

Operating cash flows from finance leases

   5 

Financing cash flows from finance leases

   25 

Right-of-use asset obtained in exchange for operating lease liability

   619 

Right-of-use asset obtained in exchange for new finance lease liability

  $40 

10. Revenue

Edge Systems License and Supply Agreement

In 2014, the Company entered into a license and supply agreement (the “Edge Agreement”), amended May 17, 2018, with Edge Systems LLC (“Edge”) to incorporate Histogen’s Cell Conditioned Media (“CCM”) skin care ingredient into Edge’s cosmetic products. The quantities to be delivered by the Company to Edge under the agreement were variable and the price per unit of CCM supplied to Edge was fixed with no variable consideration. Product returns to date have not been significant and the Company has not considered it necessary to record a reserve for product returns. The Company’s product revenues are recognized at a point in time when the underlying product is delivered to the customer which is when the customer obtains control of the product. During the years ended December 31, 2019 and 2018, the Company recognized $855 thousand and $618 thousand, respectively, in product revenue under this arrangement. The Company terminated its supply agreement with Edge in October 2019 and has no further commitments under the arrangement.

Allergan License Agreements

In 2017, the Company entered into a series of agreements (collectively, the “2017 Allergan Agreement”) which ultimately transferred Suneva Medical, Inc.’s license and supply rights of Histogen’s CCM skin care ingredient in the medical aesthetics market to Allergan Sales LLC (“Allergan”) and granted Allergan an exclusive, royalty-free, perpetual, irrevocable, non-terminable and transferable license, including the right to sublicense to third parties, to use the Company’s CCM skin care

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

ingredient in the medical aesthetics market. In consideration for the execution of the agreements, Histogen received a cash payment of $11.0 million and a potential additional payment of $5.5 million if Allergan’s net sales of products containing the Company’s CCM skin care ingredient exceeds $60.0 million in any calendar year through December 31, 2027.

In connection with the Company’s adoption of ASC 606, Revenue from Contracts with Customers, on January 1, 2018, the Company evaluated the 2017 Allergan Agreement and identified the following performance obligations that it deemed to be distinct at the inception of the contract:

1.    License

of rights to use, manufacture and sell products containing the Company’s CCM skin care ingredient through the medical aesthetics market (Field of Use) worldwide (Territory) (“CCM License”);

2.    Supply

of CCM (“Supply of CCM to Allergan”); and

3.    Potential

future improvements made to the CCM skin care ingredients (“Potential Future Improvements”).

The Company considers the CCM License as functional intellectual property as Allergan has the right to utilize the Company’s CCM skin care ingredient and that ingredient is functional to Allergan at the time the Company transferred the license.

The Company determined the transaction price at inception of the Allergan License Agreement and allocated the transaction price to the various performance obligations using the standalone selling price which is comparable to the relative selling price methodology used in the original accounting treatment for the transaction.

The entire amount of revenue allocated to the CCM License was recognized upon transfer of the license to Allergan in 2017.

As for the Supply of CCM to Allergan, the Company initially deferred $1.8 million of revenue allocated to this performance obligation which is being recognized at the point in time in which deliveries are completed. Product revenue related to the Supply of CCM to Allergan of approximately $2.6 million and $636 thousand, including recognition of revenue from deferred revenue of $1.5 million and $292 thousand, was recognized during the years ended December 31, 2019 and 2018, respectively. Further, as of December 31, 2019 and 2018, the Company had deferred revenue related to the Supply of CCM to Allergan of $0 and $1.5 million, respectively.

As for the potential future improvements to the CCM skin care ingredients, the Company initially deferred $199 thousand of revenue allocated to this performance obligation which is being recognized on a straight-line basis over a period of 123 months through the expiration of the related patents. Revenue of approximately $19 thousand was recognized during the years ended December 31, 2019 and 2018, respectively, related to the Potential Future Improvements. As of December 31, 2019 and 2018, the Company’s deferred revenue related to the Potential Future Improvements was $157 thousand and $177 thousand, respectively.

The potential milestone payment was determined to be contingent on future events that are not deemed probable of occurring at this time; therefore, no revenue related to the potential milestone has been recognized or deferred in the periods presented.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

In March 2019, Histogen entered into a separate agreement with Allergan (the “2019 Allergan Amendment”) to further amend the 2017 Allergan Agreement in exchange for a one-time payment of $7.5 million to the Company. The agreement broadened Allergan’s license rights, expanding Allergan’s access to certain sales channels where its products incorporating the CCM ingredient can be sold. Specifically, the license was broadened to provide Allergan the exclusive right to sell through the “Amazon Professional” website, or any website or digital platform owned or licensed by Allergan or under the Allergan brand name, and non-exclusive rights to sell on other websites and through brick-and-mortar medical spas and wellness centers (excluding websites and brick-and-mortar stores of luxury brands).

The Company evaluated the 2019 Allergan Amendment under ASC 606 and concluded that Allergan continues to be a customer and that the expanded license is distinct from the 2017 Allergan Agreement. The Company determined the expanded license under the 2019 Allergan Amendment to be functional intellectual property as Allergan has the right to utilize the Company’s CCM skin care ingredient, and that ingredient is functional to Allergan at the time the Company transferred the expanded license.

The standalone selling price of the expanded license was not readily observable since the Company has not yet established a price for this expanded license and the expanded license has not been sold on a standalone basis to any customer. The Company accounted for the 2019 Allergan Amendment as a modification to the 2017 Allergan Agreement. The contract modification was accounted for as if the 2017 Allergan Agreement had been terminated and the new contract included the expanded license as well as the remaining performance obligations related to the Supply of CCM to Allergan and Potential Future Improvements.

The total transaction price for the new contract included the $7.5 million from the 2019 Allergan Amendment as well as the amounts deferred as of the 2019 Allergan Amendment execution date for each the Supply of CCM to Allergan and Potential Future Improvements.

The standalone selling price for the Supply of CCM to Allergan was determined based on comparable sales transactions to the Company’s other major customer. The standalone selling price of the Potential Future Improvements was estimated at the fully burdened rate of research and development employees cost plus a commercially reasonable markup. The amount of the total transaction price allocated to the expanded license was determined using the residual approach, as a result of not having a standalone selling price for the expanded license; that is, the total transaction price less the standalone selling prices of the Supply of CCM to Allergan and Potential Future Improvements.

Revenue related to the Supply of CCM has been deferred and recognized at the point in time in which deliveries are completed while revenue related to the Potential Future Improvements has been deferred and amortized ratably over the remaining 10-year life of the patent. The $7.5 million residual amount of the total transaction price allocated to the expanded license was recognized as license revenue upon transfer of the license to Allergan in March 2019.

Remaining Performance Obligations and Deferred Revenue

The only remaining performance obligation is the Company’s obligation to share with Allergan any Potential Future Improvements to CCM identified through the Company’s research and development efforts, for which a total of $157 thousand of deferred revenue is recorded as of December 31, 2019.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Deferred revenue is classified in current liabilities when the Company’s obligations to provide research for Potential Future Improvements are expected to be satisfied within twelve months of the balance sheet date.

Huapont License and Supply Agreement

On September 30, 2016, concurrent with the purchase of 4,000,000 shares of Series D convertible preferred stock and 190,377 shares of common stock by Pineworld Capital Limited (or “Huapont”) on August 10, 2016, Histogen and Huapont entered into an Exclusive License and Supply Agreement (“LSA”) that had been negotiated simultaneously with and in anticipation of the closing of the Huapont investment transaction. The LSA, among other provisions, grants limited exclusive license and sublicense rights to Huapont for the commercialization and sale of HST-001 in the People’s Republic of China (the “territory”); and a limited non-exclusive non-assignable right to Histogen Trademarks in the territory. The agreement contains provisions for Histogen to supply HST-001 to Huapont upon request for use in clinical trials and following regulatory approval in the defined territory, for which Huapont will reimburse the Company up to $150,000 in manufacturing costs. To date, no development activities have occurred and no supply of HST-001 has been requested by Huapont pursuant to the LSA.

Histogen has a right to terminate the LSA upon failure by Huapont to achieve certain diligence or sales milestones or its abandonment of commercialization of the product, certain changes of control of Huapont, Huapont’s material breach of the LSA, Huapont’s failure to purchase certain volumes of product under the LSA, or Huapont’s sale of the product outside the territory or sale of a competing product, subject to certain cure rights. Huapont may terminate the agreement if further commercialization of the product is not commercially feasible, upon Histogen’s material breach of the LSA or if Histogen sells a competing product in the territory. Huapont will indemnify Histogen for third-party claims arising from Huapont’s distribution, marketing and promotion of products in or for the territory, Huapont’s breach of the agreement or Huapont’s intentional acts or omissions or negligence. Histogen will indemnify Huapont for the development, manufacture or supply of product by or under the control of Histogen, Histogen’s breach of its obligations or warranties, intellectual property infringement in connection with the using, importing or selling of products by Huapont, infringement of trademark rights in connection with the use of Histogen’s trademarks, or Histogen’s intentional acts or omissions or negligence.

Upon the adoption of ASC 606, the Company determined that as no up-front consideration was attributable to the LSA, there was no impact to the historical accounting for the arrangement, and therefore, no transition adjustment was required.

The LSA includes development milestone payments of up to $5,000,000 in aggregate; $0.8 million upon the approval of the Investigational New Drug (“IND”) by the China Food and Drug Administration (“CFDA”); $1.8 million upon the completion of all clinical trials required for a New Drug Filing (“NDA”) with the CFDA; $1.2 million upon NDA filing with the CFDA; and $1.2 million upon NDA approval by the CFDA. In accordance with ASC 606, Histogen excluded the development milestones from the transaction price as it considered such payments to be fully constrained under ASC 606 due to the inherent uncertainty in the achievement of such milestone payments, which are highly susceptible to factors outside of Histogen’s control. The Company will recognize revenue for development milestone as it becomes probable that a significant reversal in the amount of cumulative revenue recognized will not occur using the most likely method. For the years ended December 31, 2019 and 2018, the Company has not recognized any milestone revenue under the LSA.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

The arrangement also includes tiered royalty payments based on net sales of HST-001, consisting of 4% up to the first $50 million of net sales, 5.5% up to $50 million, 6.5% up to $125 million, and 7.5% above $200 million. Sales-based royalties promised in exchange for the license will be recognized as revenue in the period when subsequent sales occur. For the years ended December 31, 2019 and 2018, the Company did not recognize any royalty revenue under the LSA.

Grant Revenue

In March 2017, the National Science Foundation, a government agency, awarded the Company a research and development grant to develop a novel wound dressing for infection control and tissue regeneration. The Company has concluded this government grant is not within the scope of ASC 606, as government entities generally do not meet the definition of a “customer” as defined by ASC 606. Payments received under the grant are considered conditional, non-exchange contributions under the scope of ASC 958-605,Not-for-Profit Entities – Revenue Recognition, and are recorded as revenue in the period in which such conditions are satisfied. In reaching the determination that such payments should be recorded as revenue, management considered a number of factors, including whether the Company is a principal under the arrangement, and whether the arrangement is significant to, and part of, the Company’s ongoing operations.

For the years ended December 31, 2019 and 2018, the Company recognized grant revenue of $150 thousand and $300 thousand, respectively.

Professional Services Revenue

The Company recognizes revenue for professional services which are based upon negotiated rates with the counterparty. Professional services fees are recognized as revenue over time when the underlying services are performed, in accordance with ASC 606, and none of the revenue recognized to date is refundable. Professional services revenue for the years ended December 31, 2019 and 2018 was $370 thousand and $204 thousand, respectively, related to the Company’s assistance in establishing Allergan’s alternative manufacturing facility.

11. Forward Purchase Contract

In late 2011, Histogen contracted for research services from EPS Global Research Pte. Ltd. (“EPS”) to conduct clinical trials and compile data from a study in the Philippines of its HSC predecessor that took place in 2011 and 2013. The unpaid amount due for the services was approximately $340 thousand.

On January 26, 2017, Histogen and EPS entered into a Debt Settlement and Conversion Agreement (“Settlement Agreement”) whereby the Company paid $50 thousand and issued EPS 100,000 shares of Series D convertible preferred stock. The Company is required to repurchase the shares at the higher of the remaining balance due, approximately $290 thousand, or the market price of the shares at the time of repurchase, but no later than December 31, 2021. Histogen has the sole option to initiate the timing of the repurchase of the shares before the deadline date.

The Settlement Agreement was treated as debt subject to ASC 470 and a repurchase commitment under ASC 480, Distinguishing Liabilities fromEquity, which includes forward purchase contracts. In measuring the gain or loss on the extinguishment of debt under ASC 470, the Company hascompared the difference between the net carrying value of the remaining liability against the fair value of the

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

noncash securities, in this case the shares of Series D convertible preferred stock issued to EPS and the forward purchase contract. Based on these parameters, the Company has determined that no gain or loss has been created by the extinguishment of the original liability at January 26, 2017, the date of the agreement, and no effect has been recorded in the consolidated statements of operations.

The Company determined the fair value of the liability to be approximately $290 thousand which is the value as if the repurchase commitment was exercised immediately. As of December 31, 2019 and 2018, the fair value of the EPS forward contract remained at approximately $290 thousand and is included as a component of other liabilities in the accompanying consolidated balance sheets.

12. Convertible Preferred Stock

Presentation

The convertible preferred stock instruments are contingently redeemable preferred stock. Each series contains the same redemption features upon a liquidation event that places the stockholder ahead of and in preference to the common stockholders of the Company. The convertible preferred stock is presented on the consolidated balance sheets as temporary equity.

The authorized, issued and outstanding shares of convertible preferred stock as of December 31, 2019 consist of the following:

   Shared
Authorized
   Shares Issued and
Outstanding
   Liquidation
Preference
   Carrying
Value
 
           (in thousands) 

Series A

   10,000,000    9,486,575   $9,486   $9,486 

Series B

   35,000,000    7,980,620    7,981    9,356 

Series C

   8,000,000    7,500,000    7,500    5,550 

Series D

   20,000,000    10,217,687    15,327    14,678 
  

 

 

   

 

 

   

 

 

   

 

 

 

Total

   73,000,000    35,184,882   $40,294   $39,070 
  

 

 

   

 

 

   

 

 

   

 

 

 

The authorized, issued and outstanding shares of convertible preferred stock as of December 31, 2018 consist of the following:

   Shared
Authorized
   Shares Issued and
Outstanding
   Liquidation
Preference
   Carrying
Value
 
           (in thousands) 

Series A

   10,000,000    9,486,575   $9,486   $9,486 

Series B

   35,000,000    7,866,175    7,866    9,232 

Series C

   8,000,000    7,500,000    7,500    5,550 

Series D

   20,000,000    8,708,352    13,063    12,415 
  

 

 

   

 

 

   

 

 

   

 

 

 

Total

   73,000,000    33,561,102   $37,915   $36,683 
  

 

 

   

 

 

   

 

 

   

 

 

 

For the years ended December 31, 2019 and 2018, the Company issued 114,445 and 2,592,000 shares of Series B convertible preferred stock, respectively, at $1.00 per share.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

For the year ended December 31, 2019, the Company issued 1,509,335 shares of Series D convertible preferred stock at $1.50 per share, of which 1,166,667 shares related to the settlement with PUR. See Note 6 – Investment in PUR for further information. For the year ended December 31, 2018, the Company issued 1,742,167 shares of Series D convertible preferred stock at $1.50 per share.

General Rights and Preferences

The holders of each series of convertible preferred stock are entitled to receive noncumulative dividends at a rate of 6% per share per annum based on the original issue price. The preferred stock dividends are payable in preference and in priority to any dividends on common stock if or when any dividends are declared by the Board of Directors. The Company’s Board of Directors have not declared any dividends during the periods presented.

The holders of the Series A, B and C convertible preferred stock are entitled to receive liquidation preferences at the rate of $1.00 per share. The Series D holders are entitled to liquidation preferences at a rate of $1.50 per share. All series holders also have a right to receive declared but unpaid dividends upon a liquidation event. The liquidation preferences to all holders of preferred stock are made pari passu with payments to other series of convertible preferred stockholders and are made in preference to any payments to the holders of common stock.

The shares of each series of convertible preferred stock are convertible into an equal number of shares of common stock, at the option of the holder. Likewise, at the election of the holders of the majority of the then outstanding shares of convertible preferred stock, all shares will automatically convert to an equal number of shares of common stock. Finally, each share of preferred stock is automatically converted into common stock immediately upon the Company’s sale of its common stock in a firm commitment underwritten public offering pursuant to a registration statement under the Securities Act of 1933, as amended, resulting in the receipt by the Company of at least $20.0 million in which the per share price is at least $4.50. The conversion from the public offering would result in the convertible preferred stockholders receiving less than one common share for each of their shares being converted.

The holders of each series of preferred stock are entitled to one vote for each share of common stock into which such preferred stock could then be converted; and Exchange Commissionwith respect to such vote, such holders shall have full voting rights and powers equal to the voting rights and powers of the holders of common stock.

Non-Dilutive Rights

Special non-dilutive rights (“Indemnification Liability”) exist pursuant to an Indemnification Agreement executed between Lordship and Histogen on January 12, 2012. The Company is obligated to issue to Lordship additional capital stock calculated based on payments or issuances of capital stock the Company may make to Proteus Advisors, LLC (“Proteus”). The Company had contracted with Proteus for various advisory services dating back to 2009 and settled the compensation for such services through a Letter Agreement dated January 12, 2016. The Letter Agreement stipulated that the Company would pay Proteus through immediate issuance of freestanding warrants to purchase 450,000 shares of Series B convertible preferred stock and a one-time cash payment of $300 thousand when the level of additional accumulated capital investment received by the Company after May 1, 2015 reached $10.0 million. In January 2019, the Indemnification Liability was settled.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

13. Warrants

Common Warrants

On January 1, 2016, the Company granted warrants to purchase common stock to Gar Wood Securities, LLC (“Gar Wood”) as consideration for settlement of prior liability claims. The warrants entitled Gar Wood to purchase up to 25,000 common shares at 1-800-SEC-0330.an exercise price of $3.31 per share up until the expiration date of July 31, 2021. The Securitiesfair value of the warrant was determined to be immaterial using the Black-Scholes option pricing model. The warrants remain outstanding and Exchange Commission also maintainsunexercised as of December 31, 2019 and 2018.

Convertible Preferred Stock Warrants

On February 26, 2010, the Company issued warrants to purchase 300,000 shares of Series A convertible preferred stock in exchange for rent on a premise lease at an Internet websiteexercise price of $1.00 per share, which expired unexercised on December 31, 2019. The warrants were classified as a component of warrant liabilities on the consolidated balance sheets as of December 31, 2018.

On October 20, 2016, the Company issued warrants to purchase 450,000 shares of Series B convertible preferred stock as part of a settlement of compensation for advisory services at an exercise price of $1.00 per share, which expired unexercised on December 31, 2019. The warrants are classified as a component of warrant liabilities on the consolidated balance sheets as of December 31, 2018.

14. Stock-Based Compensation Expense

The Company established the Histogen Inc. 2007 Stock Plan (the “2007 Plan”) effective as of November 28, 2007. The Company was authorized to issue 14 million shares of common stock to employees, directors and consultants under the 2007 Plan. The 2007 Plan permits the issuance of incentive stock options (ISOs), non-statutory stock options (NSOs) and Stock Purchase Rights (“SPR”). NSOs may be granted to employees, directors or consultants, while ISOs may be granted only to employees. Options granted vest over a maximum period of four years and expire ten years from the date of grant. This plan expired in November 2017. No shares of common stock were granted under this plan during the years ended December 31, 2019 and 2018.

On December 18, 2017, the Company established the Histogen Inc. 2017 Stock Plan (the “2017 Plan”). Under the 2017 Plan, the Company is authorized to issue a maximum aggregate of 5.8 million shares of common stock with adjustments for unissued or forfeited shares under the predecessor plan. In April 2019, the Company amended the 2017 Plan, which increased the number of common stock available for grants by 2,278,007 shares. The 2017 Plan retained substantially all of the terms of the 2007 Plan and expires in December of 2027.

Performance-based Stock Options

On January 24, 2019, the Company issued 3,382,923 stock options to its newly appointed Chief Executive Officer. In accordance with the original award agreement, 40% of the options would vest immediately upon an initial public offering or 45 days following a change in control, as defined in the award agreement, while the remaining 60% are subject to vesting, of which 25% vest on the first anniversary of the grant date and then ratably over the remaining 36 months.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

On January 28, 2020, the award agreement was amended whereby the 40% of stock options (“Liquidity Option Shares”) subject to vesting upon an initial public offering or 45 days following a change in control will now vest immediately upon meeting certain performance-based criteria. The vesting of the Liquidity Option Shares is divided into four separate tranches, each vesting 25% of the Liquidity Option Shares, upon: (1) the closing of the proposed merger with Conatus; (2) upon the date that contains reports, proxythe market capitalization of the combined company exceeds $200,000,000; (3) upon the date that the market capitalization of the combined company exceeds $275,000,000, and; (4) upon the date that the market capitalization of the combined company exceeds $300,000,000. Additionally, in the event that the Chief Executive Officer’s employment with the Company is terminated without cause or he resigns for good reason, an additional portion of the stock options award will vest equal to the number of such options which would have vested in the 12 months following the date of such termination.

Recognition of stock-based compensation associated with performance-based stock options commences when the performance criteria is probable of achievement, using management’s best estimates. As of December 31, 2019, none of the performance-based stock options were exercisable because none of the performance-based criteria had been achieved. Because achievement of any of the performance-based criteria was not deemed probable as of December 31, 2019, the Company did not record any expense for these stock options through December 31, 2019.

The following summarizes activity related to the Company’s stock options under the 2007 Plan and 2017 Plan for the years ended December 31, 2019 and 2018:

   Options
Outstanding
  Weighted-
average
Exercise Price
   Weighted-average
Remaining
Contractual Term
(in years)
   Aggregate
Intrinsic Value
(in thousands)
 

Outstanding at December 31, 2017

   5,730,000  $0.17    5.10   $2,174 

Granted

   1,400,000   0.57     

Exercised

   (790,000  0.14     

Cancelled / Forfeited

   (190,000  0.42     
  

 

 

  

 

 

     

Outstanding at December 31, 2018

   6,150,000  $0.26    5.60   $3,098 

Granted

   3,722,923   0.76     

Exercised

   (250,000  0.14     

Cancelled / Forfeited

   (125,000  0.63     

Outstanding at December 31, 2019

   9,497,923  $0.45    6.34   $2,926 
  

 

 

  

 

 

     

Vested and exercisable at December 31, 2019

   5,272,552  $0.23    4.24   $2,814 
  

 

 

  

 

 

     

For the year ended December 31, 2019, the Company granted its employees and directors 3.7 million stock options at a weighted-average grant date fair value per share equal to $0.49. For the year ended December 31, 2018, the Company granted its employees and directors 1.2 million stock options and non-employees 0.2 million options, at a weighted-average grant date fair value per share equal to $0.35 and $0.34, respectively.

As of December 31, 2019 and 2018, the unrecognized compensation costs related to outstanding stock options (excluding those with unachieved performance-based conditions) was $1.1 million and $373 thousand, respectively, which was expected to be recognized as expense over approximately 2.9 years and 2.3 years, respectively.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

For the year ended December 31, 2019, 250,000 stock options were exercised pursuant to a cashless exercise, whereby 45,231 shares were forfeited to cover the aggregate exercise price and the remaining 204,769 shares were issued to the holders. For the year ended December 31, 2018, 225,000 stock options were exercised pursuant to a cashless exercise, whereby 63,637 shares were forfeited to cover the aggregate exercise price and the remaining 161,363 shares were issued to the holders. The total intrinsic value, which is the amount by which the exercise price was exceeded by the fair value of the Company’s common stock on the date of exercise, of stock options exercised during the year ended December 31, 2019 was $129 thousand.

Valuation of Stock Option Awards

The following weighted-average assumptions were used to calculate the fair value of awards granted to employees, directors and non-employees:

       Years Ended December 31,     
   2019  2018 

Expected volatility

   70.0  63.9

Risk-free interest rate

   2.5  2.8

Expected option life (in years)

   6.25   6.25 

Expected dividend yield

   0.0  0.0

Compensation Costs

The compensation cost that has been included in the Company’s consolidated statements of operations for all stock-based compensation arrangements is detailed as follows (in thousands):

   Years Ended December 31, 
       2019           2018     

Cost of product revenues

      $38       $25 

Research and development

   34    54 

General and administrative

   366    247 
  

 

 

   

 

 

 

Total

      $438       $326 
  

 

 

   

 

 

 

Common Stock Reserved for Future Issuance

Common stock reserved for future issuance is as follows:

December 31, 2019

Common stock warrants

25,000

Convertible preferred stock (if converted)

35,184,882

Common stock options issued and outstanding

9,497,923

Common stock available for issuance under the 2007 Plan

Common stock available for issuance under the 2017 Plan

3,391,412

48,099,217

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

15. Noncontrolling Interest

Noncontrolling interest represents the balances and results attributable to the other member of the consolidated VIE, AB, not included in the stockholders’ deficit of the Company. A summary of changes in the Company’s ownership of AB for the years ended December 31, 2019 and 2018 is as follows (in thousands):

   Years Ended December 31, 
           2019                   2018         

Net loss attributable to Histogen, Inc. stockholders

      $(2,966      $(6,125

Decrease in Histogen, Inc.’s paid-in capital for purchase of 100,000 common shares of AB from noncontrolling interest

       (100
  

 

 

   

 

 

 

Change from net loss attributable to Histogen, Inc. stockholders and transfers to noncontrolling interest

      $(2,966      $(6,225
  

 

 

   

 

 

 

16. Commitments and Contingencies

The Company is subject to claims and legal proceedings that arise in the ordinary course of business. Such matters are inherently uncertain, and there can be no guarantee that the outcome of any such matter will be decided favorably to the Company or that the resolution of any such matter will not have a material adverse effect upon the Company’s consolidated financial statements. The Company does not believe that any of such pending claims and legal proceedings will have a material adverse effect on its consolidated financial statements.

The Company has entered into numerous financing arrangements with Lordship, a related party. During subsequent financing events, Lordship asserted that it has certain rights and that are in some cases detrimental to other existing or future investors in the Company. Although the Company believes it has no further obligation to Lordship with respect to prior financing arrangements, there is no guarantee that, if requested, concessions will not be granted or that disputes will not arise with Lordship in the future.

17. Regulatory Matters

On November 12, 2015, the Company received notice that it was placed on clinical hold by the U.S. FDA after filing an IND in October 2015 to initiate Phase 1 clinical development of the lead product, HSC. The FDA required additional information, chiefly related to the characterization strategy of the product.

In February of 2017, the Company became aware of unauthorized releases of HSC at the direction of the Company’s then CEO to certain related parties in the absence of an active investigational new drug (“IND”). At that time, the Board of Directors immediately engaged an independent law firm to conduct a full investigation of the matter which led to several corrective actions. Moreover, the results of the investigation found no recipients of the material suffering any adverse reactions or injuries from the released material.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

On May 16, 2017, at the direction of the Board and investigative counsel, the Company self-reported the incidents, the follow up investigation and the corrective measures, which included additional quality controls and procedures, in a formal disclosure to the FDA.

In March of 2018, the Company filed a formal response letter to the clinical hold with the FDA containing completed test results and additional information requested by the FDA. On May 3, 2018 the Company received a release from full clinical hold from the FDA to continue its IND activity. With an active IND, the Company conducted its planned clinical trial with HSC and observed no Serious Adverse Events. The trial was completed in January 2019 and the final Clinical Study Report was submitted to the FDA in June 2019.

There were no material impacts to the consolidated financial statements related to the above activity for the years ended December 31, 2019 and 2018.

18. Employee Benefit Plans

The Company sponsors a qualified 401(k) savings plan (“401k Plan”) for all eligible employees. Participants may contribute between 1% and 100% of their eligible compensation, subject to IRS regulations. The 401k Plan provides that the Company can make discretionary contributions of 25% of the employees’ salary deferrals up to a maximum of $2,500 per each employee. Employer contributions under the 401k Plan for the years ended December 31, 2019 and 2018, were $0 and approximately $37 thousand, respectively.

19. Income Taxes

At December 31, 2019, the Company had federal and California net operating loss (“NOL”) carryforwards of approximately $38.3 million and $38.1 million, respectively. The federal net operating loss carryforwards of $7.6 million generated during the years ended December 31, 2019 and 2018 will carryforward indefinitely and be available to offset up to 80% of future taxable income. The $30.7 million and $30.5 million of carryforwards for federal and California income tax purposes, respectively, that were generated prior to 2018 begin to expire in 2028, unless previously utilized. At December 31, 2019, the Company had federal and California research and development (R&D) credit carryforwards of approximately $0.9 million and $0.8 million, respectively. The federal R&D tax credit carryforwards will begin to expire in 2027 unless previously utilized. The California R&D credit carryforwards will carry forward indefinitely.

The Company recognizes the impact of a tax position in the financial statements only if that position is more likely than not of being sustained upon examination by taxing authorities, based on the technical merits of the position. Any interest and penalties related to uncertain tax positions will be reflected in income tax expense.

Under Sections 382 and 383 of the Internal Revenue Code (IRC), substantial changes in the Company’s ownership may limit the amount of NOL and research and development credit carryforwards that could be used annually in the future to offset taxable income. The tax benefits related to future utilization of federal and state NOL carryforwards, credit carryforwards, and other information about registrants, like us,deferred tax assets may be limited or lost if cumulative changes in ownership exceeds 50% within any three-year period. The Company has not completed an IRC Section 382/383 analysis regarding the limitation of net operating loss and research and development credit carryforwards, and therefore, the ability of the Company to utilize its NOL and R&D credits is unknown.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

The Company accounts for income taxes using the asset and liability method to compute the differences between the tax basis of assets and liabilities and the related financial amounts, using currently enacted tax rates. The deferred tax assets and liabilities reflect the future tax consequences of the differences between the financial reporting and tax basis of assets and liabilities using currently enacted tax rates. The Company provides a valuation allowance against net deferred tax assets unless, based upon the available evidence, it is more likely than not that file electronicallythe deferred tax assets will be realized.

The provision for income taxes based on losses from operations consists of the following (in thousands):

   Years Ended December 31, 
         2019                 2018         

Current

    

Federal

          $           $ 

State

   (1   (1
  

 

 

   

 

 

 

Total

   (1   (1
  

 

 

   

 

 

 

Deferred

    

Federal

   736    1,277 

State

   180    455 
  

 

 

   

 

 

 

Total

   916    1,732 
  

 

 

   

 

 

 

Less valuation allowance

   (916   (1,732
  

 

 

   

 

 

 

Income tax expense

          $(1          $(1
  

 

 

   

 

 

 

The Company records a valuation allowance against deferred tax assets to the extent that it is more likely than not that some portion, or all, the deferred tax assets will not be realized. Due to the substantial doubt related to the Company’s ability to utilize its deferred tax assets, the Company recorded a valuation allowance against the deferred tax assets. The change in the valuation allowance is an increase of $0.9 million and $1.7 million for the years ended December 31, 2019 and 2018, respectively.

The reconciliation of income taxes computed using the statutory U.S. income tax rate and the provision (benefit) for income taxes for the years ended December 31, 2019 and 2018, are as follows (in thousands):

   Years Ended December 31, 
   2019  2018 

Tax computed at federal statutory rate

  $(589   21.00 $(1,256   21.00

State tax, net of federal tax benefits

   (194   6.92  (392   6.56

Permanent items

   5    (0.18%)   104    (1.74%) 

Tax credits

   (66   2.35  (157   2.62

Tax rate change

   0    0.00  (18   0.31

Valuation allowance increase

   916    (32.65%)   1,732    (28.74%) 

Other

   (71   2.53  (12   0.01
  

 

 

   

 

 

  

 

 

   

 

 

 

Provision for income taxes

  $1    (0.04%)  $1    0.01
  

 

 

   

 

 

  

 

 

   

 

 

 

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Significant components of the Company’s net deferred tax assets are as follows (in thousands):

   Years Ended December 31, 
   2019   2018 

Tax loss carryforward

          $10,757           $9,986 

R&D credits and other tax credits

   1,540    1,455 

Stock-based compensation

   60    71 

Other

   947    876 
  

 

 

   

 

 

 

Total deferred tax assets

   13,304    12,388 

Less valuation allowance

   (13,304   (12,388
  

 

 

   

 

 

 

Deferred tax assets, net

          $           $ 
  

 

 

   

 

 

 

Uncertain Tax Positions

The FASB ASC Topic 740, Income Taxes, addresses the determination of whether tax benefits claimed or expected to be claimed on a tax return should be recorded in the financial statements. Under ASC Topic 740-10, the Company may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. For fiscal years through December 31, 2019, the Company generated research and development credits but has not conducted a study to document the qualified activities. This study may result in an adjustment to the Company’s research and development tax credit carryforwards; therefore, based on the accumulation of research and development tax credits since the Company’s inception and the Company’s uncertainty around its ability to utilize those tax credits until a study is completed, the Company has reserved a portion of those credits as an uncertain tax position as of December 31, 2019. A full valuation allowance has been provided against the Company’s research and development tax credit carryforwards and, if an adjustment were to be required, this adjustment would be offset by a corresponding reduction to the valuation allowance.

The following table reconciles the beginning and ending amount of unrecognized tax benefits for the fiscal years ended December 31, 2019 and 2018 (in thousands):

       Years Ended December 31,     
       2019           2018     

Gross unrecognized tax benefits at the beginning of the year

          $           $ 

Additions from tax positions taken in the current year

   108     

Additions from tax positions taken in prior years

   366     
  

 

 

   

 

 

 

Gross unrecognized tax benefits at end of the year

          $474           $ 
  

 

 

   

 

 

 
  

 

 

   

 

 

 

Due to the existence of the valuation allowance, future changes in the Company’s unrecognized tax benefits will not impact the Company’s effective tax rate. The Company does not anticipate that there will be a substantial change in unrecognized tax benefits within the next twelve months.

The Company has not recognized any interest and penalties related to income taxes in the accompanying consolidated balance sheets or statements of operations. The Company is subject to taxation in the U.S. and state jurisdictions. The Company’s income tax returns for 2017, 2018 and 2019 are still open to audit by the taxing authorities.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

US Tax Reform

On December 22, 2017, the 2017 Tax Cuts and Jobs Act (Tax Act) was enacted into law and the new legislation contains several key tax provisions that affected the Company, including a reduction of the corporate income tax rate to 21% effective January 1, 2018, among others. The Company is required to recognize the effect of the tax law changes in the period of enactment, such as determining the transition tax, remeasuring the Company’s U.S. deferred tax assets and liabilities, as well as reassessing the net realizability of the Company’s deferred tax assets and liabilities. In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (SAB 118), which allowed the Company to record provisional amounts during a measurement period not to extend beyond one year of the enactment date. As a result, the Company previously provided a provisional estimate of the effect of the Tax Act in the Company’s financial statements. In the fourth quarter of 2018, the Company completed its analysis to determine the effect of the Tax Act and recorded no material adjustments as of December 31, 2018.

20. Related Parties

Lordship

Lordship, with its predecessor entities along its principal owner, Jonathan Jackson, have invested and been affiliated with Histogen since 2010. As of December 31, 2019 and 2018, Lordship controlled approximately 28% and 29% of the voting shares (inclusive of both common and convertible preferred stock), respectively, and controlled two Board of Director seats.

On November 19, 2012, the Company entered into a Strategic Relationship Success Fee Agreement with Lordship. The agreement causes certain payments to be made from the Company to Lordship equal to 1% of certain product revenues and 10% of certain license and royalty revenues. The agreement also stipulates that if the Company engages in a merger or sale of all or substantially all (defined as 90% or more) of its assets or equity to a third party, then the Company has the option to terminate the agreement by paying Lordship the fair market value of future payments with the Securitiesminimum payment being at least equal to the most recent annual payments Lordship has received. This agreement was amended on August 10, 2016 but continues to carry the same rights to certain payments. The Company recognized an expense to Lordship for the years ended December 31, 2019 and Exchange Commission. The address2018 of that siteapproximately $923 thousand and $41 thousand, respectively, which iswww.sec.gov.

included in general and administrative expenses on the consolidated statements of operations. As of December 31, 2019 and 2018, there was a balance of approximately $16 thousand and $170 thousand, respectively, paid to Lordship included in other assets on the consolidated balance sheet in connection with the deferral of revenue from the Allergan license transfer agreements.

In January 2019, the Company issued 152,594 shares of common stock and 114,445 shares of Series B convertible preferred stock to Lordship, pursuant to the Indemnification Agreement, to settle its obligation (collectively, the “Lordship Indemnification”). See Note 12 – Convertible Preferred Stock for further information.

CONATUS PHARMACEUTICALSDuring the year ended December 31, 2018, the Series B Senior Secured Convertible Notes and conventional notes held by Lordship were extinguished. Interest expense included in the consolidated statements of operations for the year ended December 31, 2018 related to the debts held by Lordship were approximately $23 thousand.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

INDEXDr. Naughton

Dr. Naughton is the founder and as of the periods ended held voting shares of Histogen. Dr. Naughton had served as the Chief Executive Officer and Board Chairwoman of the Company from its inception until her resignation from both positions in April 2017. At her resignation date, Dr. Naughton transitioned to the title of Founder and Chief Scientific Officer and later in 2017 added another title of Chief Business Development Officer to her roles.

The Company had amounts outstanding with Dr. Naughton for deferred/unpaid compensation. On October 31, 2016, Dr. Naughton entered into a Compensation Deferral Agreement whereby a promissory note was issued by the Company for approximately $229 thousand consisting of past due compensation along with a bonus for the deferment of payment of approximately $23 thousand. During the year ended December 31, 2018, the final payment was made to extinguish the promissory note and accrued interest thereby relieving Histogen of its obligation.

On November 3, 2016, the Company executed a Deferred Compensation Agreement with Dr. Naughton whereby payment of $88 thousand of her salary from October 1, 2016 to December 23, 2016 be deferred and due on July 25, 2018. As compensation for this accommodation by Dr. Naughton, an additional $10 thousand would be paid to her at the maturity date of the agreement. On March 12, 2018, the Board of Directors approved an early payment of Dr. Naughton’s compensation under the Deferred Compensation Agreement. In March 2018, the Company paid Dr. Naughton the total amount of $98 thousand due under that agreement.

In addition to the above, Dr. Naughton was due unpaid compensation prior to December 31, 2015 in the amount of approximately $68 thousand. During the year ended December 31, 2018, the Company made payments totaling $68 thousand to settle the outstanding amounts due to Dr. Naughton related to the unpaid compensation prior to December 31, 2015. As of December 31, 2018, no amounts were due to Dr. Naughton related to unpaid compensation.

In January 2016, Dr. Naughton advanced approximately $7 thousand to AB as an operations bridge loan. The loan calls for interest to be accrued at 10% per annum but has not been formalized. In October 2019, the Company paid Dr. Naughton the outstanding principal and accrued interest balance due under the bridge loan of approximately $9 thousand.

Eileen Brandt

Eileen Brandt is the daughter of Dr. Naughton and held the position of Director of Corporate Communications with Histogen through June 2019.

In July 2019, Ms. Brandt resigned from her position and transitioned to a part-time consultant in a similar investor relations capacity. For the year ended December 31, 2019, Ms. Brandt was paid approximately $18 thousand.

Ms. Brandt is one of the employees that had past unpaid salaries and on October 31, 2016 entered into a Compensation Deferral Agreement whereby a promissory note was issued by the Company for approximately $23 thousand consisting of the past due compensation along with a bonus for the deferment of payment of approximately $3 thousand. During the year ended December 31, 2018, the final payment was made to extinguish the promissory note and accrued interest thereby relieving Histogen of its obligation.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Dr. Stephen Chang

Dr. Stephen Chang is a Board member and was the acting CEO from April 2017 through January 2019. For the years ended December 31, 2019 and 2018, Dr. Chang was paid approximately $91 thousand and $132 thousand, respectively. As of December 31, 2019 and 2018, accrued payables for consulting compensation to Dr. Chang were $0 and $100 thousand, respectively.

Dr. David Crean

Dr. David Crean, a Board member elected to the Company’s Board of Directors in 2018, was engaged to support the Company as a consultant beginning in 2017. For the years ended December 31, 2019 and 2018, Dr. Crean was paid approximately $20 thousand and $93 thousand, respectively. The consulting agreement with Dr. Crean was not renewed for 2019. As of December 31, 2019 and 2018, accrued payables to Dr. Crean were $0 and $20 thousand, respectively.

JBF Investments, Inc.

JBF, along with its affiliate Clinica (formerly known as Hair Wellness, LLC, and Newco), are under one principal owner that are parties to various transactions with the Company including purchases of the Company’s common and preferred stock and licensing negotiations for HSC in the territory of Mexico.

On April 30, 2018, the Company entered into an agreement with Clinica, a Mexican corporation, to license the Company’s HSC product on an exclusive basis for the nation of Mexico. In accordance with the agreement, Clinica returned the Mexico intellectual property rights to HSC along with the entire protocol package presented to the COFEPRIS to Histogen. In exchange for (i) the return of those intellectual property rights, (ii) forgiveness of a $150 thousand licensing deposit, previously recorded as a liability, and (iii) as reimbursement of the Company’s portion of costs incurred by Clinica to advance the HSC protocol package with the COFEPRIS, the Company issued JBF 341,667 shares of Series D convertible preferred stock. For the year ended December 31, 2018, the Company expensed approximately $363 thousand, which was the fair value of the Series D convertible preferred stock issued less the licensing deposit liability.

Anti-Cancer Inc.

Anti-Cancer Inc. (“Anti-Cancer”) is a small early stockholder of the Company who leased space to AB during 2016. Additionally, services were provided to AB by the principal owner of Anti-Cancer. As of December 31, 2019 and 2018, outstanding amounts owed to Anti-Cancer were $22 thousand and are included in the consolidated balance sheets.

21. Subsequent Events

The Company has evaluated subsequent events through March 11, 2020, the date these consolidated financial statements were available to be issued.

HISTOGEN, INC. AND SUBSIDIARIES

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Proposed Merger with Conatus

In January 2020, the Company entered into the Merger Agreement with Conatus Pharmaceuticals, Inc. and Merger Sub. Pursuant to the Merger Agreement, Merger Sub will be merged with and into Histogen, with Histogen continuing as a wholly-owned subsidiary of Conatus and the surviving corporation of the merger. See Note 1 – Organization and Nature of Operations for further information.

Allergan Amendment

On January 17, 2020, the Company and Allergan amended the Allergan Agreements, further clarifying the fields of use, the product definition and rights to certain improvements, as well as the Company agreeing to supply additional CCM in 2020 and provide further technical assistance to Allergan (the cost of which shall be reimbursed to Histogen), for a one-time payment of $1.0 million to Histogen.

Office Lease

In January 2020, the Company entered into a long-term lease agreement with San Diego Sycamore, LLC for office and laboratory space. The new lease commenced on March 1, 2020 and expires on August 31, 2031, with no options to renew or extend. Base rent is equal to $59,775 per month at commencement and increases at a fixed rate over the term of the lease. In addition to monthly base rent, the Company is obligated to pay certain customary amounts for its share of operating expenses and utilities. The lease agreement includes six months of rent abatement and a tenant improvement allowance for renovations.

U.S. Department of Defense Grant Award

In February 2020, the Company received a grant award recommendation from the U.S. Department of Defense (“DoD”) to fund the development of one of its novel clinical assets. As part of the award process, the Company is required to submit additional documentation, including a proposed budget, prior to receiving funding. The Company is in the process of negotiating the specific terms of the award and completing the additional documentation required for submission to the DoD.

Histogen Inc. (formerly Conatus Pharmaceuticals Inc.)

Index to Consolidated Financial Statements

 

   Page 

Report of Independent Registered Public Accounting Firm

   F-2F-75 

Consolidated Balance Sheets

   F-3F-76 

Consolidated Statements of Operations and Comprehensive Loss

   F-4F-77 

Consolidated Statements of Convertible Preferred Stock and Stockholders’ DeficitEquity

   F-5F-78 

Consolidated Statements of Cash Flows

   F-7F-79 

Notes to Consolidated Financial Statements

   F-8F-80 

Report of Independent Registered Public Accounting Firm

TheTo the Shareholders and the Board of Directors and Stockholders of ConatusHistogen Inc. (formerly “Conatus Pharmaceuticals Inc.”)

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Conatus PharmaceuticalsHistogen Inc. (the Company) as of December 31, 20112019 and 2012, and2018, the related consolidated statements of operations and comprehensive loss, convertible preferred stock and stockholders’ deficit,equity, and cash flows for each of the three years then ended and forin the period from July 13, 2005 (inception) toended December 31, 2012. 2019, and the related notes (collectively referred to as the “financial statements“). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2019 and 2018, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2019, in conformity with U.S. generally accepted accounting principles.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on thesethe Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States).PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. Wemisstatement, whether due to error or fraud. The Company is not required to have, nor were notwe engaged to perform, an audit of the Company’sits internal control over financial reporting. OurAs part of our audits included considerationwe are required to obtain an understanding of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. An audit includes

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence supportingregarding the amounts and disclosures in the financial statements, assessingstatements. Our audits also included evaluating the accounting principles used and significant estimates made by management, andas well as evaluating the overall presentation of the financial statement presentation.statements. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Conatus Pharmaceuticals Inc. at December 31, 2011 and 2012, and the consolidated results of its operations and its cash flows for the years then ended and for the period from July 13, 2005 (inception) to December 31, 2012, in conformity with U.S. generally accepted accounting principles.

The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern. As discussed in Note 1 to the financial statements, the Company has recurring losses from operations and has a net capital deficiency that raise substantial doubt about its ability to continue as a going concern. Management’s plans in regard to these matters are also described in Note 1. The consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.

/s/ Ernst & Young LLP

We have served as the Company’s auditor from 2007 to 2020.

San Diego, California

May 9, 2013

March 11, 2020,

except for the effects of the reverse stock split discussed in Note 1, as to which the date is

December 18, 2020.

Histogen Inc. (formerly Conatus Pharmaceuticals Inc.)

Balance Sheets

(a development stage company)

Consolidated Balance SheetsIn thousands, except par value data)

 

   December 31,  March 31,
2013
  Pro Forma
Stockholders’
Equity as of
March 31,

2013
   2011  2012   
         

(unaudited)

Assets

     

Current assets:

     

Cash and cash equivalents

  $3,072,839   $4,036,091   $4,840,486   

Short-term investments

   13,685,199    3,989,473    255,000   

Prepaid and other current assets

   165,333    76,184    83,332   
  

 

 

  

 

 

  

 

 

  

Total current assets

   16,923,371    8,101,748    5,178,818   

Property and equipment, net

   21,114    29,604    26,906   

Other long-term assets

   14,395    14,395    40,296   
  

 

 

  

 

 

  

 

 

  

Total assets

  $16,958,880   $8,145,747   $5,246,020   
  

 

 

  

 

 

  

 

 

  

Liabilities, convertible preferred stock and stockholders’ (deficit) equity

     

Current liabilities:

     

Accounts payable and accrued expenses

  $1,179,040   $1,087,346   $390,177   

Accrued compensation

   541,957    325,555    350,641   
  

 

 

  

 

 

  

 

 

  

Total current liabilities

   1,720,997    1,412,901    740,818   

Convertible preferred stock warrant liability

   68,786    160,345    707,509   

Note payable

   1,000,000    1,000,000    1,000,000   

Series A Convertible Preferred Stock, $0.0001 par value;

     

44,827,538 shares authorized, 42,494,218 shares issued and outstanding at December 31, 2011 and 2012 and March 31, 2013 (unaudited); liquidation preference of $31,870,664 at December 31, 2011 and 2012 and March 31, 2013 (unaudited); no shares authorized, issued and outstanding, pro forma (unaudited)

   32,208,532    32,208,532    32,208,532   

Series B Convertible Preferred Stock, $0.0001 par value;

     

50,300,000 shares authorized, 36,417,224 shares issued and outstanding at December 31, 2011 and 2012 and March 31, 2013 (unaudited); liquidation preference of $32,775,502 at December 31, 2011 and 2012 and March 31, 2013 (unaudited); no shares authorized, issued and outstanding, pro forma (unaudited)

   31,699,840    31,699,840    31,699,840   

Stockholders’ (deficit) equity:

     

Common stock, $0.0001 par value; 120,000,000 shares authorized, 8,350,000 shares issued and outstanding at December 31, 2011 and 9,958,500 shares issued and 8,684,000 shares outstanding, excluding 1,274,500 shares subject to repurchase, at December 31, 2012 11,031,500 shares issued at March 31, 2013 and 8,794,844 shares outstanding, excluding 2,236,656 shares subject to repurchase (unaudited); 200,000,000 shares authorized,                      shares issued and                      shares outstanding, pro forma (unaudited)

   835    868    879   

Additional paid-in capital

   322,623    470,219       

Accumulated other comprehensive income (loss)

   (4,463  551       

Deficit accumulated during the development stage

   (50,058,270  (58,807,509  (61,111,558 
  

 

 

  

 

 

  

 

 

  

 

Total stockholders’ (deficit) equity

   (49,739,275  (58,335,871  (61,110,679 
  

 

 

  

 

 

  

 

 

  

 

Total liabilities, convertible preferred stock and stockholders’ (deficit) equity

  $16,958,880   $8,145,747   $5,246,020   
  

 

 

  

 

 

  

 

 

  
   December 31, 
   2019  2018 

Assets

   

Current assets:

   

Cash and cash equivalents

  $20,703  $11,565 

Marketable securities

      29,127 

Collaboration receivables

   122   3,677 

Prepaid and other current assets

   781   3,057 
  

 

 

  

 

 

 

Total current assets

   21,606   47,426 

Property and equipment, net

      154 

Other assets

   221   1,223 
  

 

 

  

 

 

 

Total assets

  $21,827  $48,803 
  

 

 

  

 

 

 

Liabilities and stockholders’ equity

   

Current liabilities:

   

Accounts payable and accrued expenses

  $1,064  $6,216 

Accrued compensation

   238   2,230 

Current portion of deferred revenue

      10,075 

Current portion of lease liabilities

   338    
  

 

 

  

 

 

 

Total current liabilities

   1,640   18,521 

Deferred revenue, less current portion

      2,815 

Deferred rent, less current portion

      68 

Stockholders’ equity:

   

Preferred stock, $0.0001 par value; 10,000 shares authorized; no shares issued and outstanding

       

Common stock, $0.0001 par value; 200,000 shares authorized; 3,317 shares and 3,316 shares issued and outstanding at December 31, 2019 and 2018, respectively

       

Additional paid-in capital

   218,201   214,045 

Accumulated other comprehensive loss

      (17

Accumulated deficit

       (198,014      (186,629
  

 

 

  

 

 

 

Total stockholders’ equity

   20,187   27,399 
  

 

 

  

 

 

 

Total liabilities and stockholders’ equity

  $21,827  $48,803 
  

 

 

  

 

 

 

See accompanying notes to consolidated financial statements.

Histogen Inc. (formerly Conatus Pharmaceuticals Inc.)

(a development stage company)

Consolidated Statements of Operations and Comprehensive Loss

(In thousands, except per share data)

 

 Year Ended December 31, Period From
July 13, 2005
(Inception) to
December 31,

2012
  Three Months Ended March 31, Period From
July 13, 2005
(Inception) to
March 31,
2013
   Year Ended December 31, 
 2011 2012           2012                      2013              2019 2018 2017 

Revenues:

    

Collaboration revenue

  $21,717  $33,586  $35,377 
       (unaudited)   

 

  

 

  

 

 

Total revenues

   21,717  33,586  35,377 

Operating expenses:

          

Research and development

 $9,486,619   $5,528,106   $40,825,148   $1,161,630   $967,778   $41,792,926     23,527  41,368  43,220 

General and administrative

  2,874,507    3,086,479    18,116,592    750,160    748,796    18,865,388     10,196  10,495  9,707 
 

 

  

 

  

 

  

 

  

 

  

 

   

 

  

 

  

 

 

Total operating expenses

  12,361,126    8,614,585    58,941,740    1,911,790    1,716,574    60,658,314     33,723  51,863  52,927 
  

 

  

 

  

 

 

Loss from operations

   (12,006 (18,277 (17,550

Other income (expense):

          

Interest income

  28,274    25,547    1,358,750    8,330    132    1,358,882     568  962  892 

Interest expense

  (113,836  (70,000  (774,829  (17,500  (17,500  (792,329     (696 (662

Other income (expense)

  (4,439  1,358    241,399    9,254    (15,677  225,722     53  1  (76

Other financing income (expense)

  454,547    (91,559  (691,089  9,100    (547,164  (1,238,253
 

 

  

 

  

 

  

 

  

 

  

 

   

 

  

 

  

 

 

Total other income (expense)

  364,546    (134,654  134,231    9,184    (580,209  (445,978

Total other income

   621  267  154 
 

 

  

 

  

 

  

 

  

 

  

 

   

 

  

 

  

 

 

Net loss

  (11,996,580  (8,749,239  (58,807,509 $(1,902,606 $(2,296,783 $(61,104,292  $(11,385 $(18,010 $(17,396

Other comprehensive (income) loss:

      

Net unrealized gains (losses) on short-term investments

  (4,463  5,014    551    8,696    (551    

Other comprehensive income (loss):

    

Net unrealized gains (losses) on marketable securities

   17  60  (71
 

 

  

 

  

 

  

 

  

 

  

 

   

 

  

 

  

 

 

Comprehensive loss

 $(12,001,043 $(8,744,225 $(58,806,958 $(1,893,910 $(2,297,334 $(61,104,292  $    (11,368 $    (17,950 $    (17,467
 

 

  

 

  

 

  

 

  

 

  

 

   

 

  

 

  

 

 

Net loss per share attributable to common stockholders, basic and diluted

 $(1.44 $(1.04  $(0.23 $(0.26 
 

 

  

 

   

 

  

 

  

Weighted average shares outstanding used in computing net loss per share attributable to common stockholders, basic and diluted

  8,346,134    8,389,885     8,350,000    8,749,450   
 

 

  

 

   

 

  

 

  

Pro forma net loss per share attributable to common stockholders, basic and diluted (unaudited) (Note 2)

  $      $   
  

 

    

 

  

Weighted average common shares outstanding used in computing pro forma net loss per share attributable to common stockholders, basic and diluted (unaudited) (Note 2)

      
  

 

    

 

  

Net loss per share, basic and diluted

  $(3.43 $(5.93 $(6.08

Weighted average shares outstanding used in computing net loss per share, basic and diluted

   3,317  3,037  2,859 

See accompanying notes to consolidated financial statements.

Histogen Inc. (formerly Conatus Pharmaceuticals Inc.)

Statements of Stockholders’ Equity

(a development stage company)

Consolidated Statements of Convertible Preferred Stock and Stockholders’ DeficitIn thousands)

 

  Series A Convertible
Preferred Stock
     Common Stock  Additional
Paid-in

Capital
  Accumulated
Other
Comprehensive

Income (Loss)
  Deficit
Accumulated
During the
Development

Stage
  Total
Stockholders’

Deficit
 
  Shares  Amount     Shares  Amount     

Balance at July 13, 2005 (inception)

     $         $   $   $   $   $  

Issuance of common stock to founders at $0.001 per share for cash

            6,000,000    600    5,400            6,000  

Net loss and comprehensive loss

                            (91,354  (91,354
 

 

 

  

 

 

    

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2005

            6,000,000    600    5,400        (91,354  (85,354

Issuance of preferred stock at $0.75 per share, net of issuance costs of $174,012 and estimated fair value of tranche right of $0.04 per share in October and December 2006, for cash

  7,333,334    4,029,181                            

Issuance of preferred stock at $0.75 per share, in October and December, for conversion of notes payable and related accrued interest

  1,948,582    1,461,439                            

Issuance of preferred stock at $0.75 per share, in October and December, for share-based compensation in lieu of salaries

  878,969    659,224                            

Issuance of preferred stock at $0.75 per share, in October and December, for payment of license expense

  333,333    250,000                            

Issuance of common stock to founders at $0.03 per share for cash

            1,500,000    150    44,850            45,000  

Share-based compensation

                    796            796  

Net loss and comprehensive loss

                            (3,305,145  (3,305,145
 

 

 

  

 

 

    

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2006

  10,494,218    6,399,844      7,500,000    750    51,046        (3,396,499  (3,344,703

Issuance of preferred stock at $0.75 per share, net of issuance costs of $19,095 in May 2007 for cash

  29,333,334    21,980,905                            

Issuance of preferred stock at $0.75 per share in May for payment of license expense

  2,666,666    1,999,999                            

Reclassification of tranche right upon second closing of preferred stock

      1,827,784                            

Vesting of early exercise of employee stock options

            246,875    25    2,564            2,589  

Share-based compensation

                    2,900            2,900  

Net loss

                            (10,183,310  (10,183,310

Change in unrealized gains on investments

                        46,989        46,989  
 

 

 

  

 

 

    

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2007

  42,494,218    32,208,532      7,746,875    775    56,510    46,989    (13,579,809  (13,475,535

Vesting of early exercise of employee stock options

      259,167    26    6,848      6,874  

Share-based compensation

                    24,831            24,831  

Net loss

                            (6,799,395  (6,799,395

Change in unrealized gains on investments

         (42,231      (42,231
 

 

 

  

 

 

    

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2008

  42,494,218    32,208,532      8,006,042    801    88,189    4,758    (20,379,204  (20,285,456

[Continued on the next page]

Conatus Pharmaceuticals Inc.

(a development stage company)

Consolidated Statements of Convertible Preferred Stock and Stockholders’ Deficit (continued)

  Series A Convertible
Preferred Stock
 Series B Convertible
Preferred Stock
     Common Stock  Additional
Paid-in

Capital
  Accumulated
Other
Comprehensive

Income (Loss)
  Deficit
Accumulated
During the
Development

Stage
  Total
Stockholders’

Deficit
 
  Shares  Amount     Shares  Amount     Shares  Amount     

Balance at December 31, 2008

  42,494,218   $32,208,532         $      8,006,042   $801   $88,189   $4,758   $(20,379,204)   $(20,285,456

Vesting of early exercise of employee stock options

                      212,500    21    4,754            4,775  

Share-based compensation

                              30,059            30,059  

Net loss

                                      (6,979,099  (6,979,099

Change in unrealized gains on investments

                                  (4,718      (4,718
 

 

 

  

 

 

    

 

 

  

 

 

    

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2009

  42,494,218    32,208,532                8,218,542    822    123,002    40    (27,358,303  (27,234,439

Vesting of early exercise of employee stock options

                      115,625    11    3,675            3,686  

Share-based compensation

                              35,082            35,082  

Net loss

                                      (10,703,387  (10,703,387

Change in unrealized gains on investments

                                  (40      (40
 

 

 

  

 

 

    

 

 

  

 

 

    

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2010

  42,494,218    32,208,532                8,334,167    833    161,759        (38,061,690  (37,899,098

Issuance of preferred stock at $0.90 per share, net of issuance costs of $1,075,662 in February and March 2011 for cash and conversion of note payable

            36,417,224    31,699,840                            

Vesting of early exercise of employee stock options

                      15,833    2    1,174            1,176  

Share-based compensation

                              159,690            159,690  

Net loss

                                      (11,996,580  (11,996,580

Change in unrealized gains on investments

                                  (4,463      (4,463
 

 

 

  

 

 

    

 

 

  

 

 

    

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2011

  42,494,218    32,208,532      36,417,224    31,699,840      8,350,000    835    322,623    (4,463  (50,058,270)    (49,739,275

Vesting of early exercise of employee stock options

                      334,000    33    3,572            3,605  

Share-based compensation

                              144,024            144,024  

Net loss

                                      (8,749,239  (8,749,239

Change in unrealized gains on investments

                                  5,014        5,014  
 

 

 

  

 

 

    

 

 

  

 

 

    

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2012

  42,494,218   $32,208,532      36,417,224   $31,699,840      8,684,000   $868   $470,219   $551   $(58,807,509)   $(58,335,871

Vesting of early exercise of employee stock options and exercise of vested stock options

                      110,844    11    1,097            1,108  

Share-based compensation

                              21,418            21,418  

Distribution of shares of wholly-owned subsidiary to stockholders

                              (492,734   (7,266  (500,000

Comprehensive loss:

                                         

Net loss

                                      (2,296,783  (2,296,783

Change in unrealized gains on investments

                                  (551      (551
 

 

 

  

 

 

  

 

 

 

 

  

 

 

  

 

 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Balance at March 31, 2013 (unaudited)

  42,494,218   $32,208,532      36,417,224   $31,699,840      8,794,844   $879   $   $   $(61,111,558)   $(61,110,679) 
 

 

 

  

 

 

  

 

 

 

 

  

 

 

  

 

 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 
   Common Stock   Additional
Paid-in
Capital
  Accumulated
Other
Comprehensive
Loss
  Accumulated
Deficit
  Total
Stockholders’
Equity
 
   Shares  Amount 

Balance at December 31, 2016

   2,612  $            —   $172,428  $(6 $(150,633 $21,789 

Issuance of common stock upon exercise of stock options

   7       104         104 

Issuance of common stock for employee stock purchase plan

   2       65         65 

Share-based compensation

          4,076      22   4,098 

Issuance of common stock, net of offering costs

   598       30,610         30,610 

Repurchase of common stock

   (217      (11,203        (11,203

Net loss

                (17,396  (17,396

Unrealized loss on marketable securities

             (71     (71
  

 

 

  

 

 

   

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2017

   3,002       196,080   (77  (168,007  27,996 

Issuance of common stock upon exercise of stock options

   22       362         362 

Issuance of common stock for employee stock purchase plan

   4       117         117 

Share-based compensation

          3,757         3,757 

Conversion of convertible note payable to common stock

   288       13,729         13,729 

Cumulative effect of adoption of accounting standard

                (612  (612

Net loss

                (18,010  (18,010

Unrealized gain on marketable securities

             60      60 
  

 

 

  

 

 

   

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2018

   3,316       214,045   (17  (186,629  27,399 

Issuance of common stock for employee stock purchase plan

   1       3         3 

Share-based compensation

          4,153         4,153 

Net loss

                (11,385      (11,385

Unrealized gain on marketable securities

             17      17 
  

 

 

  

 

 

   

 

 

  

 

 

  

 

 

  

 

 

 

Balance at December 31, 2019

       3,317  $   $    218,201  $    —  $    (198,014 $20,187 
  

 

 

  

 

 

   

 

 

  

 

 

  

 

 

  

 

 

 

See accompanying notes to consolidated financial statements.

Histogen Inc. (formerly Conatus Pharmaceuticals Inc.)

(a development stage company)

Consolidated Statements of Cash Flows

(In thousands)

 

  Year Ended December 31,  Period From
July 13, 2005
(Inception) to
December 31,

2012
  Three Months Ended March 31,  Period From
July 13, 2005
(Inception) to
March 31, 2013
 
  2011  2012           2012                  2013          
           (unaudited)  (unaudited) 

Operating activities:

      

Net loss

 $(11,996,580 $(8,749,239 $(58,807,509 $(1,902,606 $(2,296,783 $(61,104,292

Adjustments to reconcile net loss to net cash used in operating activities:

      

Depreciation

  10,951    9,066    199,266    2,044    2,698    201,964  

Share-based compensation expense

  159,690    144,024    397,382    41,066    21,418    418,800  

Noncash other financing expense (income)

  (454,547  91,559    1,184,198    (9,100  547,164    1,731,362  

Acquisition of in-process research and development

          1,250,000            1,250,000  

Share-based compensation in lieu of salaries

          659,224            659,224  

Noncash license expense

          2,249,999            2,249,999  

Amortization (accretion) of premium (discount) on investments

  282,673    171,810    (121,616  62,783    8,922    (112,694

Changes in operating assets and liabilities:

      

Prepaid and other current assets

  (68,107  89,149    (76,184  14,595    (7,148  (83,332

Other assets

  102,239        (14,395      (25,901  (40,296

Accounts payable and accrued expenses

  175,670    (91,694  1,131,182    (583,800  (697,169  434,013  

Accrued compensation

  (307,561  (228,882  313,075    (260,011  15,464    328,539  
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Net cash used in operating activities

  (12,095,572  (8,564,207  (51,635,378  (2,635,029  (2,431,335  (54,066,713

Investing activities:

      

Maturities of investments

  18,936,000    19,838,000    100,782,865    7,218,000    3,725,000    104,507,865  

Purchase of investments

  (32,908,335  (10,309,070  (104,650,171  (4,090,868      (104,650,171

Cash paid to acquire in-process research and development

          (250,000       (250,000

Capital expenditures

  (16,240  (17,556  (228,870          (228,870
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Net cash provided by (used in) investing activities

  (13,988,575  9,511,374    (4,346,176  3,127,132    3,725,000    (621,176

Financing activities:

      

Issuance of promissory notes

          6,200,000            6,200,000  

Proceeds from exercise of warrants

          234            234  

Distribution to wholly owned subsidiary in connection with spin-off of Idun

                  (500,000  (500,000

Issuance of preferred stock for cash, net of offering costs

  26,424,333        53,731,226            53,731,226  

Issuance of common stock

      16,085    86,185    12,735    10,730    96,915  
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Net cash provided by financing activities

  26,424,333    16,085    60,017,645    12,735    (489,270  59,528,375  
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Net increase in cash and cash equivalents

  340,186    963,252    4,036,091    504,838    804,395    4,840,486  

Cash and cash equivalents at beginning of period

  2,732,653    3,072,839        3,072,839    4,036,091      
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Cash and cash equivalents at end of period

 $3,072,839   $4,036,091   $4,036,091   $3,577,677   $4,840,486   $
4,840,486
  
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Supplemental disclosure of cash flow information:

      

Cash paid for interest

 $70,000   $70,000   $169,556   $17,500   $17,500   $187,056  
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Supplemental schedule of non-cash investing and financing activities:

      

Conversion of notes payable for preferred stock

 $5,275,507   $   $6,736,946   $   $   $6,736,946  
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Issuance of warrants in conjunction with debt

 $   $   $1,735,431   $   $   $1,735,431  
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Issuance of note payable related to acquisition of in-process research and development

 $   $   $1,000,000   $   $   $1,000,000  
 

 

 

  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 
  Year Ended December 31, 
  2019  2018  2017 

Operating activities

   

Net loss

 $(11,385 $(18,010 $(17,396

Adjustments to reconcile net loss to net cash used in operating activities:

   

Depreciation

  73   91   108 

Stock-based compensation expense

  4,153   3,757   4,098 

Amortization of premiums and discounts on marketable securities, net

  (204  (341  (68

Write off of property and equipment and other assets

  210       

Impairment of right-of-use asset

  50       

Accrued interest included in convertible note payable

     696   658 

Changes in operating assets and liabilities:

   

Collaboration receivables

  3,555   (310  (867

Prepaid and other current assets

  642   480   (123

Other assets

     (537  (872

Accounts payable and accrued expenses

  (2,355  (5,760  6,638 

Accrued compensation

  (1,992  222   (343

Deferred revenue

  (12,890  (15,099  (25,010

Lease liabilities, net

  (59      

Deferred rent

     (46  (32
 

 

 

  

 

 

  

 

 

 

Net cash used in operating activities

  (20,202  (34,857  (33,209

Investing activities

   

Maturities of marketable securities

  44,842   69,685   81,877 

Purchase of marketable securities

      (15,494      (39,637      (121,723

Capital expenditures

  (11  (66  (25
 

 

 

  

 

 

  

 

 

 

Net cash provided by (used in) investing activities

  29,337   29,982   (39,871

Financing activities

   

Proceeds from issuance of convertible note payable, net

        12,500 

Principal payment on promissory note

        (1,000

Proceeds from issuance of common stock, net

        30,610 

Repurchase of common stock

        (11,203

Deferred financing costs

     (118   

Proceeds from stock issuances related to exercise of stock options and employee stock purchase plan

  3   479   169 
 

 

 

  

 

 

  

 

 

 

Net cash provided by financing activities

  3   361   31,076 
 

 

 

  

 

 

  

 

 

 

Net (decrease) increase in cash and cash equivalents

  9,138   (4,514  (42,004

Cash and cash equivalents at beginning of period

  11,565   16,079   58,083 
 

 

 

  

 

 

  

 

 

 

Cash and cash equivalents at end of period

 $20,703  $11,565  $16,079 
 

 

 

  

 

 

  

 

 

 

Supplemental disclosure of cash flow information:

   

Cash paid for interest

 $  $  $5 
 

 

 

  

 

 

  

 

 

 

Supplemental schedule of noncash financing activities:

   

Conversion of convertible note payable to common stock

 $  $13,729  $ 
 

 

 

  

 

 

  

 

 

 

Right-of-use asset

 $590  $  $ 
 

 

 

  

 

 

  

 

 

 

See accompanying notes to consolidated financial statements.

Histogen Inc. (formerly Conatus Pharmaceuticals Inc.

(a development stage company))

Notes to Consolidated Financial Statements

1.

1.

Organization and Basis of Presentation

Conatus Pharmaceuticals Inc. (the Company) was incorporated in the state of Delaware on July 13, 2005. The Company is a biotechnology company that has been focused on the development and commercialization of novel medicines to treat chronic diseases with significant unmet need. In December 2016, the Company entered into an Option, Collaboration and License Agreement (the Collaboration Agreement) with Novartis Pharma AG (Novartis) for the development and commercialization of emricasan, an orally active pan-caspase inhibitor, for the treatment of patients with chronic liver disease.

In March 2019, the Company announced that top-line results from the ENCORE-NF clinical trial of emricasan did not meet the primary endpoint. In June 2019, the Company announced that top-line results from its ENCORE-LF clinical trial of emricasan also did not meet the primary endpoint. In addition, results from the 24-week extension in the Company’s ENCORE-PH clinical trial of emricasan were consistent with results from the initial 24-week treatment period and did not meet predefined objectives.

Consequently, the Company and Novartis have no further development plans for emricasan, and the Company and Novartis entered into an amendment to the Collaboration Agreement, pursuant to which the Company and Novartis mutually agreed to terminate the Collaboration Agreement, effective September 30, 2019. In order to extend the Company’s resources, the Company commenced a restructuring plan in June 2019 that included reducing staff and suspending development of its inflammasome disease candidate, CTS-2090, and commenced a second restructuring plan in September 2019 that included reducing additional staff to further extend the Company’s resources. The Company engaged a financial advisor to assist in the exploration and evaluation of strategic alternatives to enhance shareholder value, including a merger, an acquisition or sale of assets or a dissolution and liquidation of the Company. On January 28, 2020, Conatus, Chinook Merger Sub, Inc. (Merger Sub), and Histogen Inc. (Histogen) entered into the Agreement and Plan of Merger and Reorganization (Merger Agreement), pursuant to which, among other matters, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub will merge with and into Histogen, with Histogen continuing as Conatus’ wholly owned subsidiary and the surviving corporation of the merger. See Note 14 – Subsequent Events for additional information.

As of December 31, 2012,2019, the Company has devoted substantially all of its efforts to product development and has not realized product sales revenues from its planned principal operations. Accordingly, the Company is considered to be in the development stage.

The Company has a limited operating history, and the sales and income potential of the Company’s business and market are unproven. The Company has experienced net losses since its inception and, as of December 31, 2012,2019, had a net capital deficiencyan accumulated deficit of $58,335,871.$198.0 million. The Company expects to continue to incur net losses for at least the next several years. Successful transition to attaining profitable operations is dependent upon achieving a level of revenues adequate to support the Company’s cost structure. As of December 31, 2019, the Company had cash and cash equivalents of $20.7 million and working capital of $20.0 million. Based on the Company’s current business plan, management believes that its existing cash and cash equivalents will be sufficient to fund the Company‘s obligations for at least twelve months from the issuance date of these financial statements. If the Company is unable to generate revenues adequate to support its cost structure, the Company may need to raise additional equity or debt financing or equity financing. Asseek to complete one of December 31, 2012,the strategic alternatives described above.

Reverse Stock Split

On May 26, 2020, in connection with, and prior to the completion of, the Merger with Histogen discussed above, the Company had cash, cash equivalents, and investments of $8,025,564 and working capital of $6,688,847. The Company will require additional cash funding to continue to execute its strategic plan and fund operations through December 31, 2013. These factors raise substantial doubt about the Company’s ability to continue aseffected a going concern. The accompanying financial statements have been prepared assuming the Company will continue as a going concern. This basis of accounting contemplates the recoveryreverse stock split of the Company’s assetscommon stock at a ratio of one-for-ten (the Reverse Stock Split). The par value and the satisfactionauthorized shares of liabilities in the normal coursecommon stock were not adjusted as a result of businessthe Reverse Stock Split. All issued and does not include any adjustmentsoutstanding common stock have been retroactively adjusted to reflect the possible future effects of the recoverability and classification of assets or the amounts and classification of liabilities that might be necessary should the Company be unable to continue as a going concern.this Reverse Stock Split for all periods presented.

To fund further operations, the Company will need to raise additional capital. The Company may obtain additional financing in the future through the issuance of its common stock, through other equity or debt financings or through collaborations or partnerships with other companies. The Company may not be able to raise additional capital on acceptable terms, or at all, and any failure to raise capital as and when needed could have a material adverse effect on the results of operations, financial condition and the Company’s ability to execute on its business plan.

2.

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Principles of Consolidation

The consolidated financial statements include all the accounts of the Company and its wholly-owned subsidiary, Idun Pharmaceuticals, Inc. (Idun). All intercompany balances and transactions have been eliminated in consolidation. In January 2013, the assets and rights related to the drug candidate emricasan were distributed from Idun to the Company. Following that distribution, Idun was spun off from the Company.

Use of Estimates

The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Unaudited Interim Financial Information

The accompanying consolidated balance sheet as of March 31, 2013, consolidated statements of operations and comprehensive loss and cash flows for the three months ended March 31, 2012 and 2013 and the consolidated statements of convertible preferred stock and stockholders’ deficit for the three months ended

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

March 31, 2013 are unaudited. The unaudited financial statements have been prepared on a basis consistent with the audited financial statements and, in the opinion of management, reflect all adjustments (consisting of normal recurring adjustments) considered necessary to state fairly our financial position as of March 31, 2013 and our results of operations and cash flows for the three months ended March 31, 2012 and 2013 and for the period from July 13, 2005 (inception) to March 31, 2013. The financial data and other information disclosed in these notes to the consolidated financial statements related to the three months ended March 31, 2012 and 2013 are unaudited. The results for the three months ended March 31, 2013 are not necessarily indicative of the results to be expected for the year ending December 31, 2013 or for any other interim period.

Unaudited Pro Forma Information

The unaudited pro forma consolidated balance sheet information as of March 31, 2013 gives effect to (1) the issuance of $1,001,439 of convertible promissory notes issued in May 2013 (see Note 13) and the automatic conversion of such notes (including accrued interest thereon), assuming an initial public offering price of $                    per share (the midpoint of the price range listed on the cover page of this prospectus) and assuming the conversion occurs on                     , 2013 (the expected closing date of the IPO), (2) the conversion of 15,576,789 shares of convertible preferred stock into 1,557,678 shares of common stock in May 2013 and the automatic conversion of all remaining outstanding shares of convertible preferred stock as of March 31, 2013 into an aggregate of 63,334,653 shares of common stock and the resultant reclassification of the convertible preferred stock warrant liability to stockholders’ equity (deficit) in connection with such conversion and (3) the issuance of                      shares of the Company’s common stock as a result of the expected net exercise of the outstanding warrants to purchase Series A convertible preferred stock in connection with the IPO, assuming an initial public offering price of $             per share (the midpoint of the price range set forth on the cover page of this prospectus), which warrants will terminate if unexercised prior to the completion of the IPO. The unaudited pro forma consolidated balance sheet assumes that the completion of the IPO had occurred as of March 31, 2013 and excludes shares of common stock issued in the IPO and any related net proceeds.

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents and investments.marketable securities. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. The Company has not experienced any losses in such accounts and believes it is not exposed to significant risk on its cash. Additionally, the Company established guidelines regarding approved investments and maturities of investments, which are designed to maintain safety and liquidity.

Cash and Cash Equivalents

The Company considers all highly liquid investments with an original maturity from the date of purchase of three months or less to be cash equivalents. Cash and cash equivalents include cash in readily available checking and money market accounts.

Short-Term InvestmentsMarketable Securities

The Company classifies its investmentsmarketable securities as available-for-sale and records such assets at estimated fair value in the consolidated balance sheet,sheets, with unrealized gains and losses, if any, reported as a component of other comprehensive income (loss) within the consolidated statements of operations and comprehensive loss and as a separate component of stockholders’ deficit.equity. The Company classifies marketable securities with remaining maturities greater than one year as current assets because such marketable securities are available to fund the Company’s current operations. The Company invests its excess cash balances primarily in corporate debt securities and money market funds with strong credit ratings. Realized gains and losses are calculated on the specific identification method and recorded as interest income. There have beenwere no realized gains and losses for the years ended December 31, 20112019, 2018 and 2012 and the three months ended March 31, 2012

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

and 2013, and for the period from July 13, 2005 (inception) to December 31, 2012 and for the period from July 13, 2005 (inception) to March 31, 2013.2017.

At each balance sheet date, the Company assesses available-for-sale securities in an unrealized loss position to determine whether the unrealized loss is other-than-temporary. The Company considers factors including: the significance of the decline in value compared to the cost basis, underlying factors contributing to a decline in the prices of securities in a single asset class, the length of time the market value of the security has been less than its cost basis, the security’s relative performance versus its peers, sector or asset class, expected market volatility and the market and economy in general. When the Company determines that a decline in the fair value below its cost basis

is other-than-temporary, the Company recognizes an impairment loss in the yearperiod in which the other-than-temporary decline occurred. There have been no other-than-temporary declines in the value of short-term investmentsmarketable securities for the years ended December 31, 20112019, 2018 and 2012 and the three months ended March 31, 2012 and 2013, and for the period from July 13, 2005 (inception) to December 31, 2012 and for the period from July 13, 2005 (inception) to March 31, 2013, as it is more likely than not the Company will hold the securities until maturity or a recovery of the cost basis.2017.

Fair Value of Financial Instruments

The carrying amounts of collaboration receivables, prepaid and other current assets, and accounts payable and accrued expenses are reasonable estimates of their fair value because of the short maturity of these items.

Property and Equipment

Property and equipment, which consisted of furniture and fixtures, computers and office equipment, scientific equipment and leasehold improvements, were stated at cost and depreciated over the estimated useful lives of the assets (three to five years) using the straight-line method. Leasehold improvements were amortized over the shorter of their estimated useful lives or the lease term.

Long-Lived Assets

The Company regularly reviews the carrying value and estimated lives of all of its long-lived assets, including property and equipment, to determine whether indicators of impairment may exist which warrant adjustments to carrying values or estimated useful lives. The determinants used for this evaluation include management’s estimate of the asset’s ability to generate positive income from operations and positive cash flow in future periods, as well as the strategic significance of the assets to the Company’s business objective. Should an impairment exist, the impairment loss would be measured based on the excess of the carrying amount of the asset’s fair value. Through December 31, 2019, the Company has recognized $50,000 in impairment losses.

Revenue Recognition

Under the relevant accounting literature, an entity recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration that the entity expects to receive in exchange for those goods or services. The Company performs the following five steps in order to determine revenue recognition for contracts: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when, or as, the entity satisfies a performance obligation.

At contract inception, the Company identifies the performance obligations in the contract by assessing whether the goods or services promised within each contract are distinct. Revenue is then recognized for the amount of the transaction price that is allocated to the respective performance obligation when, or as, the performance obligation is satisfied.

In a contract with multiple performance obligations, the Company must develop estimates and assumptions that require judgment to determine the underlying stand-alone selling price for each performance obligation, which determines how the transaction price is allocated among the performance obligations. The estimation of the stand-alone selling price(s) may include estimates regarding forecasted revenues or costs, development timelines, discount rates, and probabilities of technical and regulatory success. The Company evaluates each performance obligation to determine if it can be satisfied at a point in time or over time. Any change made to estimated progress towards completion of a performance obligation and, therefore, revenue recognized will be recorded as a

change in estimate. In addition, variable consideration must be evaluated to determine if it is constrained and, therefore, excluded from the transaction price.

If a license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in a contract, the Company recognizes revenues from the transaction price allocated to the license when the license is transferred to the licensee and the licensee is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from the allocated transaction price. The Company evaluates the measure of progress at each reporting period and, if necessary, adjusts the measure of performance and related revenue or expense recognition as a change in estimate.

At the inception of each arrangement that includes milestone payments, the Company evaluates whether the milestones are considered probable of being reached. If it is probable that a significant revenue reversal would not occur, the associated milestone value is included in the transaction price. Milestone payments that are not within the Company’s or a collaboration partner’s control, such as regulatory approvals, are generally not considered probable of being achieved until those approvals are received. At the end of each reporting period, the Company re-evaluates the probability of achievement of milestones that are within its or a collaboration partner’s control, such as operational developmental milestones and any related constraint, and, if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which will affect collaboration revenues and earnings in the period of adjustment. Revisions to the Company’s estimate of the transaction price may also result in negative collaboration revenues and earnings in the period of adjustment.

For arrangements that include sales-based royalties, including commercial milestone payments based on the level of sales, and a license is deemed to be the predominant item to which the royalties relate, the Company will recognize revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied, or partially satisfied. To date, the Company has not recognized any royalty revenue from collaborative arrangements.

In December 2016, the Company entered into an Option, Collaboration and License Agreement (the Collaboration Agreement) and an Investment Agreement (the Investment Agreement) with Novartis Pharma AG (Novartis). The Company concluded that there were two significant performance obligations under the Collaboration Agreement: the license and the research and development services, but that the license is not distinct from the research and development services as Novartis cannot obtain value from the license without the research and development services, which the Company is uniquely able to perform.

The Company concluded that progress towards completion of the performance obligations related to the Collaboration Agreement is best measured in an amount proportional to the collaboration expenses incurred and the total estimated collaboration expenses. The Company periodically reviews and updates the estimated collaboration expenses, when appropriate, which adjusts the percentage of revenue that is recognized for the period. While such changes to the Company’s estimates have no impact on the Company’s reported cash flows, the amount of revenue recorded in the period could be materially impacted. The transaction price to be recognized as revenue under the Collaboration Agreement consists of the upfront payment, option exercise fee, deemed revenue from the premium paid by Novartis under the Investment Agreement and estimated reimbursable research and development costs. Certain expenses directly related to execution of the Collaboration Agreement

were capitalized as assets on the balance sheet and are being expensed in a manner consistent with the methodology used for recognizing revenue.

The Collaboration Agreement was terminated, effective September 30, 2019, and the Company will not receive any future milestone, royalty or profit and loss sharing payments under the Collaboration Agreement.

See Note 9 – Collaboration and License Agreements for further information.

Research and Development Expenses

All research and development costs are expensed as incurred.

Income Taxes

The Company’s policy related to accounting for uncertainty in income taxes prescribes a recognition threshold and measurement attribute criteria for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. As of December 31, 2019, there are no unrecognized tax benefits included in the balance sheet that would, if recognized, affect the Company’s effective tax rate. The Company has not recognized interest and penalties in the balance sheets or statements of operations and comprehensive loss. The Company is subject to U.S. and California taxation. As of December 31, 2019, the Company’s tax years beginning 2005 to date are subject to examination by taxing authorities.

Stock-Based Compensation

Stock-based compensation expense for stock option grants and restricted stock units (RSUs) under the Company’s equity plans is recorded at the estimated fair value of the award as of the grant date and is recognized as expense on a straight-line basis over the requisite service period of the stock-based award, and forfeitures are recognized as they occur. Stock-based compensation expense for employee stock purchases under the Company’s 2013 Employee Stock Purchase Plan (the ESPP) is recorded at the estimated fair value of the purchase as of the plan enrollment date and is recognized as expense on a straight-line basis over the applicable six-month ESPP offering period. The estimation of fair value for stock-based compensation requires management to make estimates and judgments about, among other things, employee exercise behavior, forfeiture rates and volatility of the Company’s common stock. The judgments directly affect the amount of compensation expense that will be recognized.

The fair value of stock options is estimated using the Black-Scholes model with the assumptions noted in the following table. The expected life of stock options is based on the simplified method. The expected volatility of stock options is based upon the historical volatility of the Company and a number of publicly traded companies in similar stages of clinical development. The risk-free interest rate is based on the average yield of five- and seven-year U.S. Treasury Bills as of the valuation date.

   Year Ended December 31, 
   2019  2018  2017 

Assumptions

    

Risk-free interest rate

   1.82% - 2.50  2.55% - 3.03  1.83% - 2.13

Expected dividend yield

   0  0  0

Expected volatility

   105% - 119  94% - 100  93% - 97

Expected term (in years)

   5.5 - 6.1   5.5 - 6.1   5.5 - 6.1 

Comprehensive Loss

The Company is required to report all components of comprehensive loss, including net loss, in the financial statements in the period in which they are recognized. Comprehensive loss is defined as the change in equity during a period from transactions and other events and circumstances from nonowner sources, including unrealized gains and losses on marketable securities. Comprehensive gains (losses) have been reflected in the statements of operations and comprehensive loss for all periods presented.

Segment Reporting

Operating segments are identified as components of an enterprise about which separate discrete financial information is used in making decisions regarding resource allocation and assessing performance. To date, the Company has viewed its operations and managed its business as one segment operating primarily in the United States.

Net Loss Per Share

Basic net loss per share is calculated by dividing the net loss by the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed by dividing the net loss by the weighted average number of common shares and common share equivalents outstanding for the period. Common stock equivalents are only included when their effect is dilutive. The Company’s potentially dilutive securities have been excluded from the computation of diluted net loss per share in the periods in which they would be anti-dilutive. For all periods presented, there is no difference in the number of shares used to compute basic and diluted shares outstanding due to the Company’s net loss position.

The following table sets forth the outstanding potentially dilutive securities that have been excluded in the calculation of diluted net loss per share because to do so would be anti-dilutive (in thousands):

  December 31, 
  2019   2018   2017 

Warrants to purchase common stock

  1    1    15 

Common stock options issued and outstanding

  130    539    482 

RSUs outstanding

  145         

Shares issuable upon conversion of convertible note payable

          296 
 

 

 

   

 

 

   

 

 

 

Total

  276    540    793 
 

 

 

   

 

 

   

 

 

 

Recent Accounting Pronouncements

In December 2019, the FASB issued ASU No. 2019-12, Simplifying the Accounting for Income Taxes, as part of its initiative to reduce complexity in accounting standards. The amendments in the ASU are effective for fiscal years beginning after December 15, 2020, including interim periods therein. Early adoption of the standard is permitted, including adoption in interim or annual periods for which financial statements have not yet been issued. We have not early adopted this ASU for 2019. The ASU is currently not expected to have a material impact on our financial statements.

In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02, Leases (Topic 842). This guidance requires lessees to recognize leases on the balance sheet and disclose key information about leasing arrangements. ASU

2016-02 establishes a right-of-use model (ROU) that requires a lessee to recognize an ROU asset and lease liability on the balance sheet for all leases with a term longer than 12 months. The Company adopted this standard effective January 1, 2019, as required, retrospectively through a cumulative effect adjustment. The new standard provides a number of optional practical expedients in transition. The Company elected the “package of practical expedients,” which permits the Company not to reassess, under ASU 2016-02, prior conclusions about lease identification, lease classification and initial direct costs. The new standard also provides practical expedients for an entity’s ongoing accounting. The Company elected to utilize the short-term lease recognition exemption for all leases that qualify. This means, for those short-term leases that qualify, the Company will not recognize ROU assets or lease liabilities. The Company also elected not to separate lease and non-lease components for facility leases. Adoption of this guidance resulted in the recognition of lease liabilities of $0.7 million, based on the present value of the remaining minimum rental payments under current leasing standards for the Company’s applicable existing office space operating lease, with corresponding ROU assets of $0.6 million.

See Note 11 – Commitments for further information.

3.

Fair Value Measurements

The accounting guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the accounting guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Level 1:Includes financial instruments for which quoted market prices for identical instruments are available in active markets.
Level 2:Includes financial instruments for which there are inputs other than quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets with insufficient volume or infrequent transaction (less active markets) or model-driven valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data.
Level 3:Includes financial instruments for which fair value is derived from valuation techniques in which one or more significant inputs are unobservable, including management’s own assumptions.

Below is a summary of assets, including cash, cash equivalents and marketable securities, measured at fair value as of December 31, 2019 and 2018 (in thousands):

     Fair Value Measurements Using 
  December 31,
2019
  Quoted Prices in
Active Markets
for Identical
Assets (Level 1)
  Significant
Other
Observable
Inputs (Level 2)
  Significant
Unobservable
Inputs
(Level 3)
 

Assets

    

Cash

 $1,870  $1,870  $  $ 

Money market funds

  18,833   18,833       
 

 

 

  

 

 

  

 

 

  

 

 

 

Total

 $20,703  $20,703  $  $ 
 

 

 

  

 

 

  

 

 

  

 

 

 

     Fair Value Measurements Using 
  December 31,
2018
  Quoted Prices in
Active Markets
for Identical
Assets (Level 1)
  Significant
Other
Observable
Inputs (Level 2)
  Significant
Unobservable
Inputs
(Level 3)
 

Assets

    

Cash

 $2,072  $2,072  $  $ 

Money market funds

  8,000   8,000       

Corporate debt securities

  30,620      30,620    
 

 

 

  

 

 

  

 

 

  

 

 

 

Total

 $40,692  $10,072  $30,620  $ 
 

 

 

  

 

 

  

 

 

  

 

 

 

At December 31, 2018, the Company’s marketable securities, consisting principally of debt securities, are classified as available-for-sale, are stated at fair value, and consist of Level 2 financial instruments in the fair value hierarchy. The Company determines the fair value of its debt security holdings based on pricing from a service provider. The service provider values the securities based on using market prices from a variety of industry-standard independent data providers. Such market prices may be quoted prices in active markets for identical assets (Level 1 inputs) or pricing determined using inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs), such as yield curve, volatility factors, credit spreads, default rates, loss severity, current market and contractual prices for the underlying instruments or debt, broker and dealer quotes, as well as other relevant economic measures.

4.

Marketable Securities

The Company invests its excess cash in money market funds and debt instruments of financial institutions, corporations, government sponsored entities and municipalities. The Company had no investments in marketable securities at December 31, 2019, the following tables summarize the Company’s investments in marketable securities at December 31, 2018 (in thousands):

As of December 31, 2018  Maturity
(in years)
   Amortized Cost   Unrealized
Gains
   Unrealized
Losses
   Estimated
Fair Value
 

Corporate debt securities

   1 or less   $29,144   $   $(17  $29,127 
    

 

 

   

 

 

   

 

 

   

 

 

 

Total

    $29,144   $   $(17  $29,127 
    

 

 

   

 

 

   

 

 

   

 

 

 

5.

Property and Equipment

Property and equipment consist of the following (in thousands):

   December 31, 
   2019   2018 

Furniture and fixtures

  $   $334 

Equipment

       208 

Leasehold improvements

       147 
  

 

 

   

 

 

 
      689 

Less accumulated depreciation and amortization

       (535
  

 

 

   

 

 

 

Total

  $   $154 
  

 

 

   

 

 

 

Depreciation expense related to property and equipment was $73,000, $91,000 and $108,000 for the years ended December 31, 2019, 2018 and 2017, respectively. At December 31, 2019, the Company wrote off the remaining net book value of its property and equipment, which totaled approximately $0.1 million

6.

Property and equipment, which consists of furniture and fixtures, computers and office equipment and leasehold improvements, are stated at cost and depreciated over the estimated useful lives of the assets (three to five years) using the straight-line method. Leasehold improvements are amortized over the shorter of their estimated useful lives or the lease term.Notes Payable

In July 2010, the Company issued to Pfizer Inc. (Pfizer) a $1.0 million promissory note (the Pfizer Note). The Pfizer Note bore interest at a rate of 7% per annum and was scheduled to mature on July 29, 2020. Interest was payable on a quarterly basis. On January 24, 2017, the Company voluntarily prepaid the entire balance of the outstanding principal and accrued and unpaid interest of the Pfizer Note in the amount of $1,004,861.

Prior to the prepayment of the Pfizer Note, the Company recorded the Pfizer Note on the balance sheet at face value. Based on borrowing rates available to the Company for loans with similar terms, the Company believed that the fair value of the Pfizer Note approximated its carrying value. The fair value measurement was categorized within Level 3 of the fair value hierarchy.

On February 15, 2017, the Company issued a convertible promissory note (the Novartis Note) in the principal amount of $15.0 million, pursuant to the Investment Agreement. The Novartis Note bore interest on the unpaid principal balance at a rate of 6% per annum and had a scheduled maturity date of December 31, 2019. The terms of the Novartis Note allowed the Company to convert the principal and accrued interest into the Company’s common stock at a conversion price equal to 120% of the 20-day trailing average closing price per share of the common stock immediately prior to the conversion date. The ability to borrow and repay the debt at a discount using shares of the Company’s common stock was deemed to be additional, foregone revenue attributable to the Collaboration Agreement, which the Company imputed and recorded as both a receivable from Novartis and a liability (deferred revenue) of $2.5 million at the inception of the Collaboration Agreement and the Investment Agreement. On February 15, 2017, the Company recorded the $15.0 million proceeds from the issuance of the Novartis Note as a convertible note payable in the amount of $12.5 million and a reduction of the outstanding receivable from Novartis of $2.5 million. On December 5, 2018, the Company, at its option, converted the entire outstanding principal of $15.0 million and accrued and unpaid interest of the Novartis Note into 288,251 shares of the Company’s common stock at a conversion price of $57.70 per share.

The Company elected to account for the Novartis Note under the fair value option. Prior to conversion of the Novartis Note, the Company concluded that the fair value of the Novartis Note remained at $12.5 million, plus the related accrued interest, due to its conversion features. The fair value measurement was categorized within Level 2 of the fair value hierarchy.

7.

Long-Lived AssetsStockholders’ Equity

The Company regularly reviews the carrying value and estimated lives of all of its long-lived assets, including property and equipment to determine whether indicators of impairment may exist which warrant adjustments to carrying values or estimated useful lives. The determinants used for this evaluation include management’s estimate of the asset’s ability to generate positive income from operations and positive cash flow in future periods as well as the strategic significance of the assets to the Company’s business objective. Should an impairment exist, the impairment loss would be measured based on the excess of the carrying amount of the asset’s fair value. The Company has not recognized any impairment losses through December 31, 2012 or March 31, 2013.

Common Stock

In May 2017, the Company completed a public offering of 598,000 shares of its common stock at a public offering price of $55.00 per share. The shares were registered pursuant to the Company’s Registration Statement on Form S-3 filed on August 14, 2014. The Company received net proceeds of $30.6 million, after deducting underwriting discounts and commissions and offering-related transaction costs. Immediately following the offering, the Company used $11.2 million of the net proceeds to repurchase and retire 216,863 shares of its common stock from funds affiliated with Advent Private Equity (collectively Advent) at a price of $51.70 per share, which is equal to the net proceeds per share

that the Company received from the offering, before expenses, pursuant to a stock purchase agreement the Company entered into with Advent in May 2017.

On August 2, 2018, the Company entered into an At Market Issuance Sales Agreement (the Sales Agreement) with Stifel, Nicolaus & Company, Incorporated (Stifel), pursuant to which the Company may sell from time to time, at its option, up to an aggregate of $35.0 million of shares of its common stock through Stifel, as sales agent. Sales of the Company’s common stock made pursuant to the Sales Agreement, if any, will be made on The Nasdaq Capital Market (Nasdaq), under the Company’s Registration Statement on Form S-3 filed on August 17, 2017 and declared effective by the SEC on November 9, 2017, by means of ordinary brokers’ transactions at market prices. Additionally, under the terms of the Sales Agreement, the Company may also sell shares of its common stock through Stifel, on Nasdaq or otherwise, at negotiated prices or at prices related to the prevailing market price. The Company will pay a commission rate equal to up to 3.0% of the gross sales price per share sold. As of December 31, 2019, no shares were issued pursuant to the Sales Agreement.

Warrants

In 2013, the Company issued warrants exercisable for 1,124,026 shares of Series B preferred stock, at an exercise price of $0.90 per share, to certain existing investors in conjunction with a private placement (the 2013 Warrants) and warrants exercisable for 111,112 shares of Series B preferred stock, at an exercise price of $0.90 per share, to Oxford Finance LLC and Silicon Valley Bank in conjunction with the Company’s entry into a loan and security agreement (the Lender Warrants). Upon completion of the Company’s initial public offering (IPO), the 2013 Warrants and the Lender Warrants became exercisable for 13,623 and 1,346 shares of common stock, respectively, at an exercise price of $74.30 per share. The 2013 Warrants expired on May 30, 2018, and the Lender Warrants will expire on July 3, 2023.

Stock Options

The Company adopted an Equity Incentive Plan in 2006 (the 2006 Plan) under which 103,030 shares of common stock were reserved for issuance to employees, nonemployee directors and consultants of the Company.

In July 2013, the Company adopted an Incentive Award Plan (the 2013 Plan), which provides for the grant of incentive stock options, nonstatutory stock options, rights to purchase restricted stock, stock appreciation rights, dividend equivalents, stock payments and restricted stock units to eligible recipients. Recipients of incentive stock options shall be eligible to purchase shares of the Company’s common stock at an exercise price equal to no less than the estimated fair market value of such stock on the date of grant. The maximum term of options granted under the 2013 Plan is ten years. Except for annual grants to non-employee directors, which vest one year from the grant date, options generally vest 25% on the first anniversary of the original vesting date, with the balance vesting monthly over the remaining three years.

Pursuant to the 2013 Plan, the Company’s management is authorized to grant stock options to the Company’s employees, directors and consultants. The number of shares available for future grant under the 2013 Plan will automatically increase each year by an amount equal to the least of (1) 100,000 shares of the Company’s common stock, (2) 5% of the outstanding shares of the Company’s common stock as of the last day of the Company’s immediately preceding fiscal year, or (3) such other amount as the Company’s board of directors may determine. Shares that remain available, that expire or otherwise terminate without having been exercised in full, and unvested shares that are forfeited to or repurchased by the Company under the 2006 Plan will roll into the 2013 Plan. As of December 31, 2019, a total of 395,143 options remain available for future grant under the 2013 Plan.

On August 31, 2017, in connection with the appointment of its new Executive Vice President, Chief Operating Officer and Chief Financial Officer, the Company granted stock options to purchase 52,500 shares of the Company’s common stock outside of its stock option plans.

The following table summarizes the Company’s stock option activity under all stock option plans for the three years ended December 31, 2019 (options in thousands):

   Number of
Options
   Weighted-
Average
Exercise Price
   Weighted-
Average
Remaining
Contractual
Term
(in years)
 

Outstanding at December 31, 2016

   339   $51.00   

Granted

   173    49.10   

Exercised

   (7   13.20   

Forfeited/cancelled/expired

   (22   60.90   
  

 

 

     

Outstanding at December 31, 2017

   483    50.50   

Granted

   94    50.80   

Exercised

   (22   17.10   

Forfeited/cancelled/expired

   (16   48.30   
  

 

 

     

Outstanding at December 31, 2018

   539    52.00   

Granted

   172    18.40   

Exercised

          

Forfeited/cancelled/expired

   (581   45.10   
  

 

 

     

Outstanding at December 31, 2019

   130   $38.21    5.2 
  

 

 

     

Exercisable at December 31, 2019

   113   $42.91    4.5 
  

 

 

     

The weighted-average fair value of options granted for the years ended December 31, 2019, 2018 and 2017 were $18.40, $39.30 and $37.90, respectively. The total intrinsic value of stock options exercised during the years ended December 31, 2019, 2018 and 2017 were $0.0 million, $0.6 million and $0.3 million, respectively.

At December 31, 2019, the intrinsic value of options outstanding and exercisable were $16,000 and $1,000, respectively.

Restricted Stock Units

In August 2019, the Company effected a one-time option exchange, wherein certain employees were offered the opportunity to exchange eligible outstanding stock options, whether vested or unvested, with exercise prices that are significantly higher than the current fair market value of the Company’s common stock for the grant of a lesser number of RSUs. The participants received one new RSU for every two stock options tendered for exchange. As a result, 320,036 stock options were exchanged for 160,017 RSUs. The RSUs have a one-year vesting schedule or vest upon a Change of Control, an employee’s termination without Cause, or resignation for Good Reason, each as defined in the 2013

Incentive Award Plan. The one-time option exchange was accounted for as a modification of the original award, and the difference in the fair value of the cancelled options immediately prior to the cancellation and the fair value of the modified options resulted in incremental value of approximately $0.1 million, which was calculated using the Black-Scholes model. Total stock-based compensation expense to be recognized over the requisite service period is equal to remaining unrecognized expense for the exchanged option, as of the exchange date, plus the incremental value of the modification to the award and is expected to be recorded over the one-year service term commencing August 1, 2019.

The following table summarizes the Company’s RSU activity under all equity plans for the three years ended December 31, 2019 (RSUs in thousands):

   Total
RSUs
   Weighted-
Average

Grant Date
Fair Value
per Share
 

Balance at December 31, 2018

      $ 

Granted

   160    3.10 

Forfeited

   (15   3.10 
  

 

 

   

Balance at December 31, 2019

   145   $3.10 
  

 

 

   

Unrecognized compensation expense related to outstanding RSUs at December 31, 2019 was $2.1 million, which is expected to be recognized over a weighted-average vesting term of 0.6 years.

Employee Stock Purchase Plan

In July 2013, the Company adopted the ESPP, which permits participants to contribute up to 20% of their eligible compensation during defined rolling six-month periods to purchase the Company’s common stock. The purchase price of the shares will be 85% of the lower of the fair market value of the Company’s common stock on the first day of trading of the offering period or on the applicable purchase date. The ESPP was activated in November 2014. The Company issued 536, 3,629 and 2,430 shares of common stock under the ESPP for the years ended December 31, 2019, 2018 and 2017, respectively. The Company had an outstanding liability of $0, $28,936 and $16,367 at December 31, 2019, 2018 and 2017, respectively, which is included in accounts payable and accrued expenses on the balance sheets, for employee contributions to the ESPP for shares pending issuance at the end of the offering period.

Stock-Based Compensation

The Company recorded stock-based compensation of $4.2 million, $3.8 million and $4.1 million for the years ended December 31, 2019, 2018 and 2017, respectively. Unrecognized compensation expense related to outstanding stock options at December 31, 2019 was $27,000, which is expected to be recognized over a weighted-average vesting term of 0.9 years.

Common Stock Reserved for Future Issuance

The following shares of common stock were reserved for future issuance at December 31, 2019 and 2018 (in thousands):

   December 31, 
   2019   2018 

Warrants to purchase common stock

   1    1 

Common stock options issued and outstanding

   130    539 

Common stock authorized for future option grants

   395    84 

RSUs outstanding

   145     

Common stock authorized for the ESPP

   49    50 
  

 

 

   

 

 

 

Total

   720    674 
  

 

 

   

 

 

 

Research and Development Expenses

All research and development costs are expensed as incurred.

8.

Income Taxes

Deferred income taxes result primarily from temporary differences between financial and tax reporting. Deferred tax assets and liabilities are determined based on the difference between the financial statement bases and the tax bases of assets and liabilities using enacted tax rates. A valuation allowance

Significant components of the Company’s deferred tax assets at December 31, 2019 and 2018 are shown below (in thousands):

   December 31, 
   2019   2018 

Deferred tax assets

    

Net operating loss carryovers

  $35,901   $31,135 

Research and development tax credits

   8,312    8,641 

Intangibles

   130    379 

Stock options

   438    2,255 

Compensation

   47    452 

Deferred revenue

       2,642 

Other

   88    62 
  

 

 

   

 

 

 

Total gross deferred tax assets

   44,916    45,566 

Deferred tax liabilities

    

Right-of-use asset

   46     
  

 

 

   

 

 

 

Total net deferred tax assets

   44,870    45,566 
  

 

 

   

 

 

 

Less valuation allowance

   (44,870   (45,566
  

 

 

   

 

 

 

Net deferred tax assets

  $   $ 
  

 

 

   

 

 

 

A reconciliation of the statutory tax rates and the effective tax rates for the years ended December 31, 2019, 2018 and 2017 is established to reduce a deferred tax asset to the amount that is expected more likely than not to be realized.

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

Stock-Based Compensation

Stock-based compensation for the Company includes amortization related to all stock option awards granted, based on the grant date fair value estimated in accordance with the applicable accounting guidance. The fair value of each option award is estimated on the date of grant using the Black-Scholes option pricing model using the assumptions noted in the following table. The expected life of options is based on the simplified method described in the SEC Staff Accounting Bulletin No. 107. The expected volatility of stock options is based upon the historical volatility of a number of publicly traded companies in similar stages of clinical development. The risk-free interest rate is based on the average yield of five- and seven-year U.S. Treasury Bills as of the valuation date.

   Year Ended December 31,  Three Months
Ended

March 31,
2013
   2011 2012  
        (Unaudited)

Assumptions:

     

Risk-free interest rate

  1.18% – 2.71% 0.78% – 1.41%  0.95% – 1.11%

Expected dividend yield

  0% 0%  0%

Expected volatility

  70% - 72% 69% - 70%  69% – 75%

Expected term (in years)

  6.1 6.1  6.1

The Company recorded stock-based compensation of $159,690, $144,024, $41,066, $21,418, $397,382 and $418,800 for the years ended December 31, 2011 and 2012, the three months ended March 31, 2012 and 2013, for the period from July 13, 2005 (inception) to December 31, 2012, and for the period from July 13, 2005 (inception) to March 31, 2013, respectively. Unrecognized compensation expense at March 31, 2013 was $43,543, which is expected to be recognized over a weighted-average vesting term of 3.5 years.

Convertible Preferred Stock Warrant Liability

The Company has issued freestanding warrants exercisable to purchase shares of its Series A convertible preferred stock. These warrants are classified as a liability in the accompanying consolidated balance sheets, as the terms for redemption of the underlying security are outside the Company’s control. The warrants are recorded at fair value using the Black-Scholes option pricing model. The fair value of all warrants, except as noted below, is remeasured at each financial reporting date with any changes in fair value being recognized in other financing income (expense), a component of other income (expense), in the accompanying consolidated statements of operations. The Company will continue to remeasure the fair value of the warrant liability until: (i) exercise, which is expected to occur immediately prior to the completion of the IPO, (ii) expiration of the related warrant, or (iii) upon conversion of the convertible preferred stock underlying the security into common stock, at which time the warrants will be classified as a component of stockholders’ equity and will no longer be subject to remeasurement.

Comprehensive Loss

The Company is required to report all components of comprehensive loss, including net loss, in the consolidated financial statements in the period in which they are recognized. Comprehensive loss is defined as the change in equity during a period from transactions and other events and circumstances from nonowner sources, including unrealized gains and losses on investments. Comprehensive gains (losses) have been reflected in the consolidated statements of operations and comprehensive loss for all periods presented.

Segment Reporting

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision-maker in making decisions regarding

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

resource allocation and assessing performance. To date, the Company has viewed its operations and managed its business as one segment operating primarily in the United States.

Net Loss Per Share

Basic net loss per share is calculated by dividing the net loss by the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed by dividing the net loss by the weighted average number of common shares and common share equivalents outstanding for the period. Common stock equivalents are only included when their effect is dilutive. The Company’s potentially dilutive securities which include convertible preferred stock, warrants and outstanding stock options under the stock option plan have been excluded from the computation of diluted net loss per share as they would be anti-dilutive. For all periods presented, there is no difference in the number of shares used to compute basic and diluted shares outstanding due to the Company’s net loss position.

The following table sets forth the outstanding potentially dilutive securities that have been excluded in the calculation of diluted net loss per shares because to do so would be anti-dilutive.

   December 31,   March 31,
2013
 
   2011   2012   
           (Unaudited) 

Convertible preferred stock

   78,911,442     78,911,442     78,911,442  

Warrants to purchase preferred stock

   2,333,320     2,333,320     2,333,320  

Common stock options

   6,273,250     5,694,500     4,899,000  

Common stock subject to repurchase

        1,274,500     2,236,656  
  

 

 

   

 

 

   

 

 

 

Total

   87,518,012     88,213,762     88,380,418  
  

 

 

   

 

 

   

 

 

 

Unaudited Pro Forma Net Loss Per Share

The following table summarizes the unaudited pro forma net loss per share attributable to common stockholders:

   December 31, 2012  March 31, 2013 
      (Unaudited) 

Numerator

   

Net loss attributable to common stockholders

  $(8,749,239 $(2,296,783

Add:

   

Change in fair value of warrants

   91,559    547,164  
  

 

 

  

 

 

 

Pro forma net loss

  $(8,657,680 $(1,749,619
  

 

 

  

 

 

 

Denominator

   

Weighted average common shares outstanding, basic and diluted

   8,389,885    8,749,450  

Add:

   

Pro forma adjustments to reflect assumed conversion of preferred stock

   78,911,442    78,911,442  

Pro forma adjustments to reflect assumed conversion of convertible preferred stock issued upon net exercise of warrants

   
  

 

 

  

 

 

 

Shares used to compute pro forma net loss per share, basic and diluted

   
  

 

 

  

 

 

 

Pro forma basic and diluted net loss per share attributable to common stockholders

   
  

 

 

  

 

 

 

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

Recently Issued Accounting Pronouncements

In May 2011, new authoritative guidance was issued regarding common fair value measurements and disclosure requirements in GAAP and International Financial Reporting Standards (IFRS). The new guidance clarifies the application of certain existing fair value measurement guidance and expands the disclosures for fair value measurements that are estimated using significant unobservable inputs. This guidance is effective on a prospective basis for annual and interim reporting periods beginning on or after December 15, 2011. The Company adopted this standard effective January 1, 2012, and such adoption did not have an impact on the Company’s financial position or results of operations.

In June 2011, a new accounting standard was issued which eliminates the current option to report other comprehensive income (loss) and its components in the statement of stockholders’ equity. The standard is intended to enhance comparability between entities that report under GAAP and those that report under IFRS, and to provide a more consistent method of presenting non-owner transactions that affect an entity’s equity. Under the new standard, a company can elect to present items of net income (loss) and other comprehensive income (loss) in one continuous statement, referred to as the statement of comprehensive income (loss), or in two separate, but consecutive, statements. The new guidance does not change items that constitute net income (loss) and other comprehensive income (loss) or when an item of other comprehensive income (loss) must be reclassified to net income (loss). The Company adopted this standard effective January 1, 2012, and such adoption did not have a material impact on the Company’s consolidated results of operations, cash flows, or financial position.

3. Fair Value Measurements

The accounting guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the accounting guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

 

Level 1:

Includes financial instruments for which quoted market prices for identical instruments are available in active markets.

Level 2:

Includes financial instruments for which there are inputs other than quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets with insufficient volume or infrequent transaction (less active markets) or model-driven valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data.

Level 3:

Includes financial instruments for which fair value is derived from valuation techniques in which one or more significant inputs are unobservable, including management’s own assumptions.

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements
   December 31, 
   2019  2018  2017 

Statutory rate

   21.0  21.0  34.0

Valuation allowance

   6.1  (25.2)%   51.5

Federal tax rate change

       (93.3)% 

General business credits

   (2.9)%   6.2  10.8

Expiration of stock options

   (21.4)%     

Other

   (2.8)%   (2.0)%   (3.0)% 
  

 

 

  

 

 

  

 

 

 

Effective tax rate

       
  

 

 

  

 

 

  

 

 

 

At December 31, 2019, the Company had federal and state NOL carryforwards of $145.5 million and $76.4 million, respectively. The federal and state NOL carryforwards begin to expire in 2028, unless previously utilized. The federal NOL carryforwards generated after 2017 have an indefinite carryforward life. The Company also has federal, including orphan drug, and state research credit carryforwards of $8.3 million and $2.4 million, respectively. The federal research credit carryforwards will begin expiring in 2027, unless previously utilized. The state research credit will carry forward indefinitely. The change in the valuation allowance is a decrease of $0.7 million for the year ended December 31, 2019, an increase of $4.4 million for the year ended December 31, 2018 and a decrease of $9.0 million for the year ended December 31, 2017.

Pursuant to Internal Revenue Code (IRC) Sections 382 and 383, annual use of the Company’s NOL or research and development credit carryforwards may be limited in the event a cumulative change in ownership of more than 50% occurs within a three-year period. The Company previously completed a study to assess whether an ownership change, as defined by IRC Section 382, had occurred from its formation through December 31, 2017. Based upon this study, the Company determined that ownership changes had occurred in 2006 and 2013 but concluded that the annual utilization limitation would be sufficient to utilize the Company’s pre-ownership change NOLs and research and development credits prior to expiration, with the exception of a de minimis amount. Future ownership changes may limit the Company’s ability to utilize its remaining tax attributes. The Company recognizes the impact of uncertain income tax positions at the largest amount that is “more likely than not” to be sustained upon audit by the relevant taxing authority. An uncertain tax position will not be recognized if it has less than a 50% likelihood of being sustained.

The following table summarizes the activity related to the Company’s unrecognized tax benefits (in thousands):

   2019   2018   2017 

Balance at beginning of year

  $2,221   $1,932   $1,319 

Additions based on tax positions related to the current year

       289    613 

Reductions based on tax positions related to prior years

   (80        
  

 

 

   

 

 

   

 

 

 

Balance at end of year

  $2,141   $2,221   $1,932 
  

 

 

   

 

 

   

 

 

 

The Company does not expect that the unrecognized tax benefits will change within 12 months of this reporting date. Due to the existence of the valuation allowance, future changes in the Company’s unrecognized tax benefits will not impact the Company’s effective tax rate. The Company’s policy is to recognize interest and penalties related to income tax matters in income tax expense. For the years ended December 31, 2019, 2018 and 2017, the Company has not recognized any interest or penalties related to income taxes.

The Company files tax returns as prescribed by the tax laws of the jurisdictions in which it operates. In the normal course of business, the Company is subject to examination by the federal and state jurisdictions where applicable. There are currently no pending income tax examinations. The Company’s tax years for 2005 and forward are subject to examination by the federal and California tax authorities due to the carryforward of unutilized net operating losses (NOLs) and research and development credits.

9. Collaboration and License Agreements

In December 2016, the Company entered into the Collaboration Agreement, pursuant to which the Company granted Novartis an exclusive option to collaborate with the Company to develop products containing emricasan. Pursuant to the Collaboration Agreement, the Company received a non-refundable upfront payment of $50.0 million from Novartis.

In May 2017, Novartis exercised its option under the Collaboration Agreement. In July 2017, the Company received a $7.0 million option exercise payment, at which time the license under the Collaboration Agreement became effective (the License Effective Date). The Company and Novartis entered into an amendment to the Collaboration Agreement, pursuant to which they mutually agreed to terminate the Collaboration Agreement in September 2019.

Under the Collaboration Agreement, the Company was eligible to receive up to an aggregate of $650.0 million in milestone payments over the term of the Collaboration Agreement, contingent on the achievement of certain development, regulatory and commercial milestones, as well as royalties or profit and loss sharing on future product sales in the United States, if any.

Novartis was to pay 50% of the Company’s Phase 2b and observational study costs pursuant to an agreed upon budget. Upon completion of the Phase 2b trials, Novartis would have assumed 100% of the observational study costs and full responsibility for emricasan’s Phase 3 development and all combination product development. Due to the termination of the Collaboration Agreement, the Company will not receive any future milestone, royalty or profit and loss sharing payments under the Collaboration Agreement.

Pursuant to the terms of termination of the Collaboration Agreement, the Company and Novartis continued to share the costs of the Phase 2b trials equally until December 31, 2019, and Novartis will pay up to $150,000 for its share of the costs of the Phase 2b trials, if any, in 2020. The Company accounted for the termination of the Collaboration Agreement as a contract modification of an existing contract as the remaining services are not distinct and, therefore, form part of a single performance obligation that is partially satisfied as of the contract modification date.

Concurrent with entry into the Collaboration Agreement, the Company entered into the Investment Agreement, whereby the Company was able to borrow up to $15.0 million at a rate of 6% per annum, under one or two notes, with a maturity date of December 31, 2019. On February 15, 2017, the Company issued the Novartis Note in the principal amount of $15.0 million pursuant to the Investment Agreement. The terms of the Novartis Note allowed the Company to convert the principal and accrued interest into the Company’s common stock at a conversion price equal to 120% of the 20-day trailing average closing price per share of the common stock immediately prior to the conversion date. On December 5, 2018, the Company, at its option, converted the entire outstanding principal of $15.0 million and accrued and unpaid interest of the Novartis Note into 288,251 shares of the Company’s common stock at a conversion price of $57.70 per share.

Under the Collaboration Agreement, there were two significant performance obligations: the license and the research and development services, but the license was not distinct from the research and development services as Novartis could not obtain value from the license without the research and development services, which the Company was uniquely able to perform. The Company concluded that progress towards completion of the performance obligations related to the Collaboration Agreement was best measured in an amount proportional to the collaboration expenses incurred and the total estimated collaboration expenses. The transaction price recognized as revenue under the Collaboration Agreement consisted of the upfront payment, option exercise fee, deemed revenue from the premium paid by Novartis under the Investment Agreement and estimated reimbursable research

and development costs. Certain expenses directly related to execution of the Collaboration Agreement were capitalized as assets on the balance sheet and were expensed in a manner consistent with the methodology used for recognizing revenue. During the quarter ended June 30, 2019, as a result of the decision to discontinue the development of emricasan, the Company significantly reduced the transaction price and the total estimated reimbursable research and development expenses under the Collaboration Agreement. The net effect of these changes resulted in the recognition of a cumulative catch-up in revenue of $4.6 million, which was recorded as a change in estimate during the three months ended June 30, 2019.

A reconciliation of the opening and closing balances of deferred revenue related to the Collaboration Agreement, which represents the unrecognized balance of the transaction price, is as follows (in thousands):

   Deferred
Revenue
 

Balance at December 31, 2017

  $26,691 

Cumulative effect of adoption of accounting standard

   1,299 

Additions to deferred revenue

   18,486 

Revenue recognized

   (33,586
  

 

 

 

Balance at December 31, 2018

   12,890 

Additions to deferred revenue

   8,826 

Revenue recognized

   (21,716
  

 

 

 

Balance at December 31, 2019

  $ 
  

 

 

 

A reconciliation of the opening and closing balances of deferred costs related to execution of the Collaboration Agreement is as follows (in thousands):

 

Deferred
Costs

Below is a summary of assets and liabilities measured at fair value as of December 31, 2011 and 2012 and March 31, 2013.

   December 31,
2011
   Fair Value Measurements Using 
     Quoted Prices in
Active Markets
for Identical
Assets

(Level 1)
   Significant
Other
Observable
Inputs

(Level 2)
   Significant
Unobservable
Inputs

(Level 3)
 

Assets

        

Money market funds

  $2,678,439    $2,678,439    $    $  

Municipal bonds

   355,000          355,000       

Corporate debt securities

   12,204,645          12,204,645       

U.S. Treasury securities

   500,315          500,315       

Debt securities in government sponsored entities

   625,239          625,239       
  

 

 

   

 

 

   

 

 

   

 

 

 

Total assets

  $16,363,638    $2,678,439    $13,685,199    $  
  

 

 

   

 

 

   

 

 

   

 

 

 

Liabilities

        

Convertible preferred stock warrant liability

  $68,786    $    $    $68,786  
  

 

 

   

 

 

   

 

 

   

 

 

 

Total liabilities

  $68,786    $    $    $68,786  
  

 

 

   

 

 

   

 

 

   

 

 

 

   December 31,
2012
   Fair Value Measurements Using 
     Quoted Prices in
Active Markets
for Identical
Assets

(Level 1)
   Significant
Other
Observable
Inputs

(Level 2)
   Significant
Unobservable
Inputs

(Level 3)
 

Assets

        

Money market funds

  $3,874,153    $3,874,153    $    $  

Municipal bonds

   260,000          260,000       

Corporate debt securities

   3,729,473          3,729,473       
  

 

 

   

 

 

   

 

 

   

 

 

 

Total assets

  $7,863,626    $3,874,153    $3,989,473    $  
  

 

 

   

 

 

   

 

 

   

 

 

 

Liabilities

        

Convertible preferred stock warrant liability

  $160,345    $    $    $160,345  
  

 

 

   

 

 

   

 

 

   

 

 

 

Total liabilities

  $160,345    $    $    $160,345  
  

 

 

   

 

 

   

 

 

   

 

 

 

   March 31,
2013

(unaudited)
   Fair Value Measurements Using 
     Quoted Prices in
Active Markets
for Identical
Assets

(Level 1)
   Significant
Other
Observable
Inputs

(Level 2)
   Significant
Unobservable
Inputs

(Level 3)
 

Assets

        

Money market funds

  $2,389,034    $2,389,034    $    $  

Municipal bonds

   255,000          255,000       
  

 

 

   

 

 

   

 

 

   

 

 

 

Total assets

  $2,644,034    $2,389,034    $255,000    $  
  

 

 

   

 

 

   

 

 

   

 

 

 

Liabilities

        

Preferred stock warrant liability

  $707,509    $    $    $707,509  
  

 

 

   

 

 

   

 

 

   

 

 

 

Total liabilities

  $707,509    $    $    $707,509  
  

 

 

   

 

 

   

 

 

   

 

 

 

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

The Company’s short-term investments, consisting principally of debt securities and money market funds, are classified as available-for-sale, are stated at fair value and consist of Level 2 financial instruments in the fair value hierarchy. The Company determines the fair value of its debt security holdings based on pricing from a service provider. The service provider values the securities based on using market prices from a variety of industry-standard independent data providers. Such market prices may be quoted prices in active markets for identical assets (Level 1 inputs) or pricing determined using inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs), such as, yield curve, volatility factors, credit spreads, default rates, loss severity, current market and contractual prices for the underlying instruments or debt, broker and dealer quotes, as well as other relevant economic measures.

The fair value of the convertible preferred stock warrant liability was determined based on Level 3 inputs and utilizing the Black-Scholes option pricing model using the assumptions noted in the following table.

   Year Ended December 31,  March 31,
2013
 
   2011  2012  
         (unaudited) 

Assumptions:

    

Risk-free interest rate

   1.89  1.78  1.87

Expected dividend yield

   0  0  0

Expected volatility

   70  70  70

Expected term (in years)

   8.3    7.3    7.0  

The following table presents activity for the convertible preferred stock warrant liability measured at fair value using significant unobservable Level 3 inputs during the years ended December 31, 2011 and 2012.

   Fair Value
Measurements at
Reporting Date
Using Significant
Unobservable
Inputs

(Level 3)
 

Balance at January 1, 2011

  $1,734,544  

Changes in fair value reflected as other financing income

   (1,665,758
  

 

 

 

Balance at December 31, 2011

   68,786  

Changes in fair value reflected as other financing expense

   91,559  
  

 

 

 

Balance at December 31, 2012

   160,345  

Changes in fair value reflected as other financing expense

   547,164  
  

 

 

 

Balance at March 31, 2013

  $707,509  
  

 

 

 

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

4. Investments

The Company invests its excess cash in money market funds and debt instruments of financial institutions, corporations, and municipal bonds. The following tables summarize the Company’s short-term investments:

As of December 31, 2011

  

Maturity
(in years)

  Amortized
Cost
   Unrealized
Gains
   Unrealized
Losses
   Estimated
Fair Value
 

Corporate debt securities

  1 or less  $12,209,419    $    $4,774    $12,204,645  

Debt securities in government sponsored entities

  1 or less   625,000     239          625,239  

US Treasury securities

  1 or less   500,243     72          500,315  

Municipal bonds

  1 or less   355,000               355,000  
    

 

 

   

 

 

   

 

 

   

 

 

 

Total

    $13,689,662    $311    $4,774    $13,685,199  
    

 

 

   

 

 

   

 

 

   

 

 

 

As of December 31, 2012

  

Maturity
(in years)

  Amortized
Cost
   Unrealized
Gains
   Unrealized
Losses
   Estimated
Fair Value
 

Corporate debt securities

  1 or less  $3,728,922    $551    $    $3,729,473  

Municipal bonds

  1 or less   260,000               260,000  
    

 

 

   

 

 

   

 

 

   

 

 

 

Total

    $3,988,922    $551    $    $3,989,473  
    

 

 

   

 

 

   

 

 

   

 

 

 

As of March 31, 2013 (unaudited)

  

Maturity
(in years)

  Amortized
Cost
   Unrealized
Gains
   Unrealized
Losses
   Estimated
Fair Value
 

Municipal bonds

  1 or less  $255,000    $    $    $255,000  
    

 

 

   

 

 

   

 

 

   

 

 

 

Total

    $255,000    $    $    $255,000  
    

 

 

   

 

 

   

 

 

   

 

 

 

5. Property and Equipment

Property and equipment consist of the following:

   December 31  March 31,
2013
 
   2011  2012  (unaudited) 

Furniture and fixtures

  $107,797   $112,876   $112,876  

Computer and office equipment

   82,723    95,199    95,199  

Leasehold improvements

   3,645    3,645    3,645  
  

 

 

  

 

 

  

 

 

 
   194,165    211,720    211,720  

Less accumulated depreciation and amortization

   (173,051  (182,116  (184,814
  

 

 

  

 

 

  

 

 

 
  $21,114   $29,604   $26,906  
  

 

 

  

 

 

  

 

 

 

Depreciation expense related to property and equipment amounted to $10,951, $9,066, and $199,266 for the years ended December 31, 2011 and 2012, and for the period from July 13, 2005 (inception) to December 31, 2012, respectively. Depreciation expense related to property and equipment amounted to $2,044, $2,698, and $201,964 for the three months ended March 31, 2012 and 2013, and for the period from July 13, 2005 (inception) to March 31, 2013, respectively (unaudited).

6. Note Payable

In July 2010, the Company entered into a $1,000,000 promissory note payable to Pfizer Inc. The note bears interest at 7% per annum which is paid quarterly and matures on July 29, 2020. The note payable prohibits the Company from paying cash dividends and is subject to acceleration upon specified events of default as defined in the agreement including the failure to notify Pfizer of certain material adverse events.

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

7. Convertible Preferred Stock and Stockholders’ Equity (Deficit)

Common Stock

During 2005, the Company sold 6,000,000 shares of common stock to founders for approximately $6,000. During 2006, the Company sold 1,500,000 shares of common stock to founders for approximately $45,000, subject to certain restrictions that have since been released.

Convertible Preferred Stock

Between August 2005 and July 2006, the Company borrowed from certain officers and investors an aggregate principal amount of $1,200,000 under convertible promissory notes. The convertible promissory notes had an annual interest rate of 8% and a conversion premium on principal and accrued interest of 15%. The principal, accrued interest and conversion premium under the convertible promissory notes converted into shares of Series A convertible preferred stock (Series A Preferred Stock) in October 2006, in connection with the initial closing of the Series A Preferred Stock financing.

During 2006, the Company entered into agreements with the founding officers and several investors who collectively purchased 10,160,885 shares of Series A Preferred Stock at $0.75 per share for $5,500,000 in cash, the conversion of the bridge financing noted above, plus related accrued interest and conversion premium of $261,439, and the issuance of preferred stock to employees of approximately $659,224 for services (Initial Closing). Additionally, the Company issued 333,333 shares of the Series A Preferred Stock in satisfaction of its initial license payment to Roche Palo Alto LLC and F. Hoffman-La Roche Ltd. (collectively, Roche) (Note 8).

In May 2007, the Company closed the second round of its Series A Preferred Stock financing, providing the Company with $22,000,000 in gross proceeds from the issuance of an additional 29,333,334 shares of Series A Preferred Stock (Second Closing). Additionally, the Company’s Board of Directors determined that the Company had obtained satisfactory completion of certain preclinical studies of its product candidate, which was licensed from Roche, which triggered an additional $3,500,000 payment in cash and $2,000,000, in the form of the issuance of an additional 2,666,666 shares of Series A Preferred Stock to Roche (Note 8).

The holders of the Series A Preferred Stock are entitled to receive noncumulative dividends at a rate of $0.06 per share per annum. The Series A Preferred Stock dividends are payable when and if declared by the Company’s Board of Directors. As of December 31, 2012, the Company’s Board of Directors has not declared any dividends. The Series A Preferred Stock dividends are payable in preference and in priority to any dividends on common stock.

The holders of the Series A Preferred Stock are entitled to receive liquidation preferences at the rate of $0.75 per share. Liquidation payments to the holders of Series A Preferred Stock have priority and are made in preference to any payments to the holders of common stock.

The shares of Series A Preferred Stock are convertible into an equal number of shares of common stock, at the option of the holder, subject to certain anti-dilution adjustments. Each share of Series A Preferred Stock is automatically converted into common stock immediately upon (i) the Company’s sale of its common stock in a firm commitment underwritten public offering pursuant to a registration statement under the Securities Act of 1933, as amended, in which per share price is at least $2.70 (as adjusted), and the gross cash proceeds are at least $30,000,000 or (ii) the affirmative vote of more than 50% of the holders of the then-outstanding Series A Preferred Stock.

The holders of Series A Preferred Stock are entitled to one vote for each share of common stock into which such Series A Preferred Stock could then be converted; and with respect to such vote, such holder shall have full voting rights and powers equal to the voting rights and powers of the holders of common stock.

Included in the terms of the Series A Preferred Stock agreement were certain rights granted to the holders of the Series A Preferred Stock issued in the Initial Closing which obligated the Company to deliver additional

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

shares of Series A Preferred Stock at a specified price in the future at the potential Second Closing based on the achievement of a milestone or at the option of the holders of the Series A Preferred Stock (the Tranche Right). The Series A Preferred Stock, based on its “deemed liquidation” terms, is classified outside of stockholder’s deficit. Accordingly, the Tranche Right to purchase additional shares was valued and classified as a liability in 2006 and 2007. The carrying value was adjusted at each reporting date for any material changes in its estimated fair value. The estimated fair value was determined using a valuation model which considered the probability of achieving a milestone, if any, the entity’s cost of capital, the estimated time period the Tranche Right would be outstanding, consideration received for the instrument with the Tranche Right, the number of shares to be issued to satisfy the Tranche Right, and at what price and any changes in the fair value of the underlying instrument to the Tranche Right. At December 31, 2006, the change in fair value of the Tranche Right was immaterial. In 2007, the change in fair value of the Tranche Right of $530,977 was recorded as other financing expense and the adjusted carrying value of the Tranche Right of $1,827,784 was reclassified to convertible preferred stock on the balance sheet upon the Second Closing in May 2007.

In February 2011, the Company closed the first round of its Series B convertible preferred stock (Series B Preferred Stock) financing, providing the Company with $20,000,000 in gross proceeds from the issuance of 22,222,223 shares of Series B Preferred Stock. Upon the first closing, 5,861,667 shares of Series B Preferred Stock were issued upon the conversion of convertible bridge notes and related accrued interest under the terms of the convertible bridge financing agreement. In March 2011, the Company completed an additional closing to a new investor of its Series B Preferred Stock financing, providing the Company with $7,500,000 in gross proceeds from the issuance of an additional 8,333,334 shares of Series B Preferred Stock.

The holders of the Series B Preferred Stock are entitled to receive noncumulative dividends at a rate of $0.072 per share per annum. The Series B Preferred Stock dividends are payable when and if declared by the Company’s Board of Directors. As of December 31, 2012, the Company’s Board of Directors has not declared any dividends. The Series B Preferred Stock dividends are payable in preference and in priority to any dividends on common stock and Series A Preferred Stock.

The holders of the Series B Preferred Stock are entitled to receive liquidation preferences at the rate of $0.90 per share. Liquidation payments to the holders of Series B Preferred Stock have priority and are made in preference to any payments to the holders of common stock and Series A Preferred Stock.

The shares of Series B Preferred Stock are convertible into an equal number of shares of common stock, at the option of the holder, subject to certain anti-dilution adjustments. Each share of Series B Preferred Stock is automatically converted into common stock immediately upon (i) the Company’s sale of its common stock in a firm commitment underwritten public offering pursuant to a registration statement under the Securities Act of 1933, as amended, in which per share price is at least $2.70 (as adjusted), and the gross cash proceeds are at least $30,000,000 or (ii) the affirmative vote of more than 66.67% of the holders of the then-outstanding Series B Preferred Stock.

The holders of Series B Preferred Stock are entitled to one vote for each share of common stock into which such Series B Preferred Stock could then be converted; and with respect to such vote, such holder shall have full voting rights and powers equal to the voting rights and powers of the holders of common stock.

The Series B Preferred Stock, based on its “deemed liquidation” terms, is classified outside of stockholders’ deficit.

Warrants

The Company issued warrants to purchase a total of 2,333,320 shares of Series A Preferred Stock in conjunction with a convertible bridge financing in 2010. The warrants are exercisable for $0.01 per share for a term of 10 years. The Company accounts for the warrants as a liability as they are exercisable for shares of

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

preferred stock that is classified outside of permanent equity. The convertible preferred stock warrant liability is required to be recorded at fair value at the grant date of the warrants and the carrying value adjusted at each reporting date. The Company determined the fair value of the two sets of warrants on the issuance date using the Black-Scholes method and the following assumptions: volatility of 70%-77%, risk-free interest rates of 2.59%-3.69%, expected life of ten years and expected dividend yield of 0%. The $1,735,197 initial value of the warrants was recorded as a debt discount and convertible preferred stock warrant liability. The debt discount was amortized to other financing expense using the effective interest method over the term of the debt. The Company revalued the warrantsBalance at December 31, 2011 and 2012 and March 31, 2013, and recorded the change in the value2017

$

Cumulative effect of the warrantsadoption of $1,665,758 as other financing income and $91,559 and $547,164 as other financing expense, respectively. No shares of Series A Preferred Stock have been issued pursuant to the warrants.accounting standard

687

Stock OptionsCosts recognized

The Company adopted an Equity Incentive Plan (the Plan) in 2006 under which 8,500,000 shares of common stock were reserved for issuance to employees, nonemployee directors and consultants of the Company at March 31, 2013. The Plan provides for the grant of incentive stock options, nonstatutory stock options, rights to purchase restricted stock, stock appreciation rights, dividend equivalents, stock payments, and restricted stock units to eligible recipients. Recipients of incentive stock options shall be eligible to purchase shares of the Company’s common stock at an exercise price equal to no less than the estimated fair market value of such stock on the date of grant. The maximum term of options granted under the Plan is ten years. The options generally vest 25% on the first anniversary of the original vesting date, with the balance vesting monthly over the remaining three years. As of March 31, 2013, 69,500 options remain available for future grant under the Plan.

The following table summarizes stock option transactions for the Plan since the Company’s inception:

(377

 

   Total Options  Weighted-
Average
Exercise
Price
 

Balance at July 13, 2005 (inception) and December 31, 2005

      $  

Granted

   625,000    0.01  

Exercised

   (600,000  0.01  
  

 

 

  

Balance at December 31, 2006

   25,000    0.01  

Granted

   400,000    0.04  

Exercised

   (250,000  0.05  
  

 

 

  

Balance at December 31, 2007

   175,000    0.03  

Granted

   1,025,250    0.15  

Cancelled

   (50,000  0.15  
  

 

 

  

Balance at December 31, 2008

   1,150,250    0.13  

Granted

   247,500    0.15  
  

 

 

  

Balance at December 31, 2009

   1,397,750    0.13  

Cancelled

   (150,000  0.15  
  

 

 

  

Balance at December 31, 2010

   1,247,750    0.13  

Granted

   5,025,500    0.09  
  

 

 

  

Balance at December 31, 2011

   6,273,250    0.10  

Granted

   1,646,750    0.01  

Exercised

   (1,608,500  0.01  

Cancelled

   (617,000  0.11  

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

 

   Total Options  Weighted-
Average
Exercise
Price
 
  

 

 

  

Balance at December 31, 2012

   5,694,500    0.10  

Granted

   277,500    0.17  

Exercised

   (1,073,000  0.01  
  

 

 

  

Balance at March 31, 2013

   4,899,000    0.12  
  

 

 

  

Vested at March 31, 2013

   4,319,833    0.12  
  

 

 

  

The weighted-average fair value of options granted was $0.06 for the year ended December 31, 2011, $0.01 for the year ended December 31, 2012, $0.10 for the three months ended March 31, 2013, $0.05 for the period from inception to December 31, 2012, and $0.05 for the period from July 31, 2005 (inception) to March 31, 2013. At December 31, 2012, there were options outstanding to purchase 5,694,500 shares and all of these shares were exercisable. At March 31, 2013, there were options outstanding to purchase 4,899,000 shares and all of these shares were exercisable. The intrinsic value of options outstanding at March 31, 2013 was $834,835.

Unvested shares from the early exercise of options are subject to repurchase by the Company at the lower of the original issue price or fair value. Options granted under the Plan will vest according to the respective option agreement. There were 1,608,500 shares exercised during the year ended December 31, 2012 with 1,274,500 shares subject to repurchaseBalance at December 31, 2012. There were 1,073,000 shares exercised during the three months ended March 31, 2013 of which 1,048,000 shares are subject to repurchase at March 31, 2013. There are 2,236,656 shares subject to repurchase at March 31, 2013.2018

310

The Company recorded a related liability totaling $12,480 and $22,101Costs recognized

(310

Balance at December 31, 2012 and March 31, 2013, respectively, which is included in accrued compensation on the consolidated balance sheets.2019

Common Stock Reserved for Future Issuance

   December 31, 2012   March 31, 2013 
       (unaudited) 

Conversion of preferred stock

   78,911,442     78,911,442  

Convertible preferred stock warrants

   2,333,320     2,333,320  

Stock options issued and outstanding

   5,694,500     4,899,000  

Authorized for future option grants

   97,000     69,500  
  

 

 

   

 

 

 
   87,036,262     86,213,262  
  

 

 

   

 

 

 

8. License Agreements

In November 2006, the Company entered into a research, development and commercialization agreement with Roche, in which the Company obtained a sole and exclusive license to develop, make, use and sell a novel, clinical-stage product candidate. The Company intended to develop the product candidate for liver disease. An initial payment of $250,000 was made in November 2006, in the form of the issuance of 333,333 shares of Series A Preferred Stock. In 2007, the Company’s Board of Directors determined that the preclinical studies were satisfactorily completed, and the Company was obligated to make another payment consisting of $3,500,000 in cash. In addition, an aggregate of $2,000,000 in payments were due under the agreement in 2011 and 2012 in the form of the issuance of an additional 2,666,666 shares of Series A Preferred Stock. In late 2011, the Company ceased clinical development of this product candidate and in early 2012 the rights to the product candidate reverted to Roche. The Company has no further obligations under the agreement.

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

In July 2010, the Company became party to a collaboration agreement with Abbott Laboratories (Abbott) regarding a cancer product under development and currently in human clinical trials. Abbott is responsible for clinical and commercial development and related costs. In the event of the successful development and commercialization of the cancer product, the Company would receive certain development milestone payments and a royalty on commercial sales. This collaboration agreement was included within the assets retained by Idun in its spin off by the Company (Note 12).

9. Income Taxes

The Company accounts for income taxes in accordance with Accounting Standards Codification 740-10,Accounting for Uncertainty in Income Tax. The impact of an uncertain income tax position is recognized at the largest amount that is “more likely than not” to be sustained upon audit by the relevant taxing authority. An uncertain tax position will not be recognized if it has less than a 50% likelihood of being sustained. There are no unrecognized tax benefits included in the Company’s consolidated balance sheets at December 31, 2011 or 2012, and therefore has not incurred any penalties or interest.

The Company files tax returns as prescribed by the tax laws of the jurisdictions in which it operates. In the normal course of business, the Company is subject to examination by the federal and state jurisdictions where applicable. There are currently no pending income tax examinations. The Company’s tax years for 2005 and forward are subject to examination by the federal and California tax authorities due to the carryforward of unutilized net operating losses and research and development credits.

Pursuant to Internal Revenue Code (IRC) Sections 382 and 383, annual use of the Company’s net operating loss and research and development credit carryforwards may be limited in the event a cumulative change in ownership of more than 50% occurs within a three-year period. The Company has not completed an IRC Section 382/383 analysis regarding the limitation of net operating loss and research and development credit carryforwards. The Company does not expect this analysis to be completed within the next 12 months and, as a result, the Company does not expect that the unrecognized tax benefits will change within 12 months of this reporting date. Due to the existence of the valuation allowance, future changes in the Company’s unrecognized tax benefits will not impact the Company’s effective tax rate.

Significant components of the Company’s deferred tax assets at December 31, 2011 and 2012, are shown below:

   2011  2012 

Deferred tax assets:

   

Net operating loss carryovers

  $17,175,000   $20,722,000  

Research and development tax credits

   1,675,000    1,755,000  

Intangibles

   1,696,000    1,466,000  

Compensation

   88,000    101,000  

Other

   39,000    35,000  
  

 

 

  

 

 

 

Total gross deferred tax assets

   20,673,000    24,129,000  

Less valuation allowance

   (20,673,000  (24,129,000
  

 

 

  

 

 

 

Net deferred tax assets

  $   $  
  

 

 

  

 

 

 

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

A reconciliation of the statutory tax rates and the effective tax rates for the years ended December 31, 2011 and 2012 is as follows:

       2011          2012     

Statutory rate

   34.00  34.00

State tax, net of federal benefit

   5.83  5.83

Valuation allowance

   (39.50)%   (39.59)% 

Other

   (0.33)%   (0.24)% 
  

 

 

  

 

 

 

Effective tax rate

     
  

 

 

  

 

 

 

At December 31, 2012, the Company has federal and state net operating loss carryforwards of approximately $52,300,000 and $51,242,000, respectively. The federal and state loss carryforwards begin to expire in 2025 and 2015, respectively, unless previously utilized. The Company also has federal and state research credit carryforwards of approximately $1,263,000 and $745,000, respectively. The federal research credit carryforwards will begin expiring in 2026 unless previously utilized. The state research credit will carry forward indefinitely. The change in the valuation allowance is a decrease of $3,456,000, and $5,408,000, and an increase of $24,129,000 for the years ended December 31, 2011 and 2012, and for the period from July 13, 2005 (inception) to December 31, 2012, respectively.

The American Taxpayer Relief Act of 2012, which reinstated the United States federal research and development tax credit retroactively from January 1, 2012 through December 31, 2013, was not enacted into law until the first quarter of 2013. The law change will have no impact on the 2013 financial statements due to the valuation allowance placed against the Company’s net deferred tax assets.

10. Employee Benefits

Effective December 4, 2006, the Company has a defined contribution 401(k) plan for its employees. Employees are eligible to participate in the plan beginning on the first day of the third month following date of hire. Under the terms of the plan, employees may make voluntary contributions as a percent of compensation. Effective January 1, 2007, the Company instituted a safe harbor matching contribution program. Contributions to the matching program totaled $89,755, $107,564, and $537,708 for the years ended December 31, 2011 and 2012, and for the period from July 13, 2005 (inception) to December 31, 2012, respectively. Contributions to the matching program totaled $26,961, $30,803, and $568,511 for the three months ended March 31, 2012 and 2013, and for the period from July 13, 2005 (inception) to March 31, 2013, respectively.

11. Commitments

The Company leases certain office space under a noncancelable operating lease with terms through June 30, 2013. The rent expense for 2011, 2012, and the period from July 13, 2005 (inception) to December 31, 2012, totaled $155,723, $152,448, and $1,219,955, respectively. The rent expense for the three months ended March 31, 2012 and 2013 totaled $37,710 and $38,514, respectively. Future minimum payments under the aforementioned noncancelable operating lease total $38,514 at March 31, 2013.

In July 2010, the Company entered into a stock purchase agreement with Pfizer, pursuant to which the Company acquired all of the outstanding stock of Idun. Under the agreement, the Company may be required to make payments to Pfizer totaling $18.0 million upon the achievement of specified regulatory milestones.

12. Spin-off of Idun Pharmaceuticals, Inc.

In January 2013, the Company spun off its subsidiary Idun to the Company’s stockholders. Prior to the spin-off, rights relating to emricasan were distributed to the Company by Idun pursuant to a distribution agreement. The spin-off was conducted as a dividend of all of the outstanding capital stock of Idun to the Company’s stockholders. As a result, the Company no longer held any capital stock of Idun.

Conatus Pharmaceuticals Inc.

(a development stage company)

Notes to Consolidated Financial Statements

In connection with the spin-off, the Company contributed $500,000 to Idun to provide for Idun’s initial working capital requirements. The assets remaining in Idun at the time of the spin-off consisted of cash, intellectual property rights and license and collaboration agreements unrelated to emricasan. Other than the cash of $500,000, none of the assets held by Idun had any historical carrying value at the time of the spin-off. As a result, the Company recognized a reduction in equity as a result of the spin-off of $500,000, representing the carrying value of Idun in the Company’s consolidated financial statements at the time of the spin-off.

13. Subsequent Events (unaudited)

In May 2013, the Company entered into a note and warrant purchase agreement with certain existing investors pursuant to which it sold, in a private placement, an aggregate of $1.0 million of convertible promissory notes (the 2013 Notes), and issued warrants exercisable to purchase shares of Series B Preferred Stock (the 2013 Warrants). The 2013 Notes accrue interest at a rate of 6% per annum and are due and payable on the earlier of (1) any date after November 30, 2013 upon which holders of 75% of the outstanding principal amount of all such 2013 Notes demand repayment, or (2) the occurrence of a change of control of the Company, subject in each case to their earlier conversion in the event the Company completes a qualified initial public offering or private placement of debt and/or equity. The 2013 Warrants are exercisable for an aggregate of 1,124,026 shares of Series B Preferred Stock at an exercise price of $0.90 per share. In the case of a completed public offering, the 2013 Warrants will become exercisable for shares of common stock equal to the number of shares into which the Series B Preferred Stock would have converted to common stock. The 2013 Warrants will expire on May 30, 2018.

LOGO

             Shares

Common Stock

PROSPECTUS

                    , 2013

Stifel

Piper Jaffray

JMP Securities

SunTrust Robinson Humphrey

Neither we nor any of the underwriters have authorized anyone to provide information different from that contained in this prospectus. When you make a decision about whether to invest in our common stock, you should not rely upon any information other than the information in this prospectus. Neither the delivery of this prospectus nor the sale of our common stock means that information contained in this prospectus is correct after the date of this prospectus. This prospectus is not an offer to sell or solicitation of an offer to buy these shares of common stock in any circumstances under which the offer or solicitation is unlawful.


Part II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 13. Other Expenses of Issuance and Distribution.

The following table indicates the expenses to be incurred in connection with the offering described in this registration statement, other than underwriting discounts and commissions, all of which will be paid by us. All amounts are estimated except the Securities and Exchange Commission registration fee, the Financial Industry Regulatory Authority, Inc., or FINRA, filing fee and The NASDAQ Global Market listing fee.

Amount

Securities and Exchange Commission registration fee

$    9,412

FINRA filing fee

*

The NASDAQ Global Market listing fee

*

Accountants’ fees and expenses

*

Legal fees and expenses

*

Blue Sky fees and expenses

*

Transfer Agent’s fees and expenses

*

Printing and engraving expenses

*

Miscellaneous

*$ 
  

 

 

 

Total expenses

$*

 

10.

Employee Benefits

Effective December 4, 2006, the Company has a defined contribution 401(k) plan for its employees. Employees are eligible to participate in the plan beginning on the first day of employment. Under the terms of the plan, employees may make voluntary contributions as a percent of compensation. Effective January 1, 2007, the Company instituted a safe harbor matching contribution program. Contributions to the matching program totaled $192,000, $239,000 and $217,000 for the years ended December 31, 2019, 2018 and 2017, respectively.

11.

Commitments

Leases

The Company determines if an arrangement is a finance lease, operating lease or short-term lease at inception, or as applicable, and accounts for the arrangement under the relevant accounting literature. Currently, the Company is only party to a non-cancelable office space operating lease and short-term lease arrangements. Under the relevant guidance, the Company recognizes operating lease ROU assets and liabilities based on the present value of the future minimum lease payments over the lease term at the commencement date, using the Company’s assumed incremental borrowing rate of 12%, and amortizes the ROU assets and liabilities over the lease term. Lease expense for operating leases is recognized on a straight-line basis over the lease term. The Company’s short-term leases are not subject to recognition of an ROU asset or liability or straight-line lease expense requirements.

In February 2014, the Company entered into a noncancelable operating lease agreement (the Lease) for certain office space with a lease term from July 2014 through December 2019 and a renewal option for an additional five years. In May 2015, the Company entered into a first amendment to the Lease (the First Lease Amendment) for additional office space starting in September 2015 through September 2020. The First Lease Amendment also extended the term of the Lease to September 2020. The monthly base rent under the Lease and the First Lease Amendment increases approximately 3% annually from approximately $33,000 in 2015 to approximately $39,000 in 2020.

In December 2019, the Company agreed to sublet the office space, in two phases, under the Lease through September 30, 2020, the reminder of the lease term. As the amounts to be received under the sublease agreement were less than the Company’s remaining payment obligations under the Lease, an impairment loss of $50,000 was recorded on the ROU asset, representing the excess of the carrying value of the ROU asset over its fair value.

As of December 31, 2019, the Company’s ROU assets and liabilities related to the Lease and the First Lease Amendment are as follows (in thousands):

 

ROU assets (included in other assets)

  $221 
  

 

 

 

Current portion of lease liabilities

  $338 
  

 

 

 

Total lease liabilities

  $338 
  

 

 

 

The following table reconciles the undiscounted cash flows to the operating lease liabilities recorded in the balance sheet as of December 31, 2019 (in thousands):

Total lease payments

  $351 

Present value adjustment

   (13
  

 

 

 

Total lease liabilities

  $338 
  

 

 

 

Rent expense was as follows (in thousands):

   Year Ended December 31, 
   2019   2018   2017 

Operating lease

  $378   $378   $378 

Short-term leases

   68    27     
  

 

 

   

 

 

   

 

 

 

Total

  $446   $405   $378 
  

 

 

   

 

 

   

 

 

 

Other Commitments

In July 2010, the Company entered into a stock purchase agreement with Pfizer, pursuant to which the Company acquired all of the outstanding stock of Idun Pharmaceuticals, Inc., which was subsequently spun off to the Company’s stockholders in January 2013. Under the stock purchase agreement, the Company may be required to make payments to Pfizer totaling $18.0 million upon the achievement of specified regulatory milestones.

12.

Quarterly Financial Data (unaudited)

The following tables summarize the unaudited quarterly financial data for the last two fiscal years (in thousands, except per share data):

   2019 
   First
Quarter
  Second
Quarter
  Third
Quarter
  Fourth
Quarter
 

Total revenues

  $7,024  $10,791  $3,376  $526 

Total operating expenses

   11,974   11,619   6,759   3,371 

Total other income

   203   172   130   116 

Net loss

   (4,747  (656  (3,253  (2,729

Net loss per share, basic and diluted (1)

   (1.43  (0.20  (0.98  (0.82
   2018 
   First
Quarter
  Second
Quarter
  Third
Quarter
  Fourth
Quarter
 

Total revenues

  $9,737  $8,774  $7,666  $7,409 

Total operating expenses

   14,794   13,331   12,324   11,414 

Total other income

   39   60   69   99 

Net loss

   (5,018  (4,497  (4,589  (3,906

Net loss per share, basic and diluted (1)

   (1.67  (1.49  (1.52  (1.26

(1)

Net loss per share is computed independently for each quarter and the full year based upon respective shares outstanding; therefore, the sum of the quarterly net loss per share amounts may not equal the annual amounts reported.

13.

Restructuring Costs

In June 2019, the Company announced a restructuring plan that included reducing staff and suspending development of its inflammasome disease candidate, CTS-2090, in order to extend the Company’s resources. As a result, during the three months ended June 30, 2019, the Company recognized one-time employee severance expenses of $1.2 million, which were included in accounts payable and accrued expenses on the balance sheet, and noncash stock compensation expenses related to accelerated vesting of certain employee stock options of $0.3 million, both of which were recorded as operating expenses on the statement of operations and comprehensive loss.

In September 2019, the Company announced a second restructuring plan that included reducing additional staff. As a result, during the three months ended September 30, 2019, the Company recognized one-time employee severance expenses of $0.9 million, which were included in accounts payable and accrued expenses on the balance sheet, and noncash stock compensation expenses related to accelerated vesting of certain employee stock options of $0.3 million, both of which were recorded as operating expenses on the statement of operations and comprehensive loss.

At December 31, 2019, the remaining accrued severance liability totals approximately $0.1 million.

14.

Subsequent Events

On January 28, 2020, Conatus, Merger Sub, and Histogen, entered into a Merger Agreement, pursuant to which, among other matters, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub will merge with and into Histogen, with Histogen continuing as Conatus’ wholly owned subsidiary and the surviving corporation of the merger.

Consummation of the merger is subject to certain closing conditions, including, among other things, approval by Conatus’ and Histogen’s stockholders. Should the Merger Agreement be terminated prior to consummation, the Merger Agreement contains certain termination rights for both Conatus and Histogen, and further provides that, upon termination of the Merger Agreement under specified circumstances, either party may be required to pay the other party a termination fee of $500,000, and in some circumstances reimburse the other party’s expenses up to a maximum of $350,000.

LOGO

HISTOGEN INC.

10,434,782 shares of Common Stock

Pre-Funded Warrants to Purchase up to 10,434,782 Shares

of Common Stock

Common Warrants to Purchase 10,434,782 Shares of Common Stock

Placement Agent Warrants to Purchase up to 521,739 Shares

of Common Stock

PRELIMINARY PROSPECTUS

H.C. Wainwright & Co., LLC

, 2020


PART II

INFORMATION NOT REQUIRED IN THE PROSPECTUS

ITEM 13. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

The following is a statement of approximate expenses to be incurred by the Company in connection with the distribution of the securities registered under this registration statement. All amounts shown are estimates except for the SEC registration fee and FINRA filing fee.

   Amount 

SEC registration fee

  $2,700 

FINRA filing fee

  $2,300 

Legal fees and expenses

  $175,000 

Accountant’s fees and expenses

  $70,000 

Miscellaneous

  $50,000 
  

 

 

 

Total

  $300,000 
  

 

 

 

ITEM 14. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

The Registrant’s amended and restated certificate of incorporation and amended and restated bylaws contains provisions that eliminate the personal liability of the Registrant’s directors and executive officers for monetary damages for breach of their fiduciary duties as directors or officers.

Section 145 of the Delaware General Corporation Law provides that a corporation may indemnify any person made a party to an action by reason of the fact that he or she was a director, executive officer, employee or agent of the corporation or is or was serving at the request of a corporation against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by him or her in connection with such action if he or she acted in good faith and in a manner he or she reasonably believed to be in, or not opposed to, the best interests of the corporation and, with respect to any criminal action or proceeding, had no reasonable cause to believe his or her conduct was unlawful, except that, in the case of an action by or in right of the corporation, no indemnification may generally be made in respect of any claim as to which such person is adjudged to be liable to the corporation unless and only to the extent that the Court of Chancery or other adjudicating court determines that, despite the adjudication of liability but in view of all of the circumstances of the case, such person is fairly and reasonably entitled to indemnity for such expenses which the Court of Chancery or such other court shall deem proper.

In addition, as permitted by Section 145 of the Delaware General Corporation Law, the amended and restated certificate of incorporation and amended and restated bylaws of the Registrant will provide that:

The Registrant shall indemnify its directors and officers for serving the Registrant in those capacities or for serving other business enterprises at the Registrant’s request, to the fullest extent permitted by Delaware law. Delaware law provides that a corporation may indemnify such person if such person acted in good faith and in a manner such person reasonably believed to be in or not opposed to the best interests of the Registrant and, with respect to any criminal proceeding, had no reasonable cause to believe such person’s conduct was unlawful.

The Registrant may, in its discretion, indemnify employees and agents in those circumstances where indemnification is permitted by applicable law.

The Registrant is required to advance expenses, as incurred, to its directors and officers in connection with defending a proceeding, except that such director or officer shall undertake to repay such advances if it is ultimately determined that such person is not entitled to indemnification.

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The Registrant will not be obligated pursuant to the amended and restated bylaws to indemnify a person with respect to proceedings initiated by that person, except with respect to proceedings authorized by the Registrant’s board of directors or brought to enforce a right to indemnification.

The rights conferred in the amended and restated certificate of incorporation and amended and restated bylaws are not exclusive, and the Registrant is authorized to enter into indemnification agreements with its directors, officers, employees, and agents and to obtain insurance to indemnify such persons.

The Registrant may not retroactively amend the bylaw provisions to reduce its indemnification obligations to directors, officers, employees, and agents.

The Registrant has entered into indemnification agreements with its directors and executive officers that provide the maximum indemnity allowed to directors and executive officers by Section 145 of the Delaware General Corporation Law and also to provide for certain additional procedural protections, in addition to the indemnification provided for in its amended and restated certificate of incorporation and bylaws, and intends to enter into indemnification agreements with any new directors and executive officers in the future.

The Registrant has purchased and currently intends to maintain insurance on behalf of each and any person who is or was a director or officer of the Registrant against any loss arising from any claim asserted against him or her and incurred by him or her in any such capacity, subject to certain exclusions.

The engagement letter between the Registrant and the placement agent (Exhibit 1.1 hereto) provides for indemnification by the Registrant of the placement agent for certain liabilities, including liabilities arising under the Securities Act.

See also the undertakings set out in response to Item 17 herein.

ITEM 15. RECENT SALES OF UNREGISTERED SECURITIES.

On November 16, 2020, the Registrant issued warrants to purchase 1,892,088 common shares at $1.70 per share and placement agent warrants issued to H.C. Wainwright Co., LLC (or its designees) to purchase up to 126,139 common shares at $2.2297 per share.

In connection with each of the foregoing issuances, the Company relied upon the exemption from registration provided by Section 4(a)(2) of the Securities Act of 1933, as amended, for transactions not involving a public offering and/or Rule 506 thereunder.

ITEM 16.

EXHIBITS

(a) Exhibits

We have filed the exhibits listed on the accompanying Exhibit Index of this registration statement and below in this Item 16:

Exhibit Number

  

Description of Exhibit

    3.1Amended and Restated Certificate of Incorporation of the Company (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on August 1, 2013).
    3.2Certificate of Amendment (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on May 27, 2020).

 

*

To be provided

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Exhibit Number

Description of Exhibit

    3.3Certificate of Amendment (incorporated by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on May 27, 2020).
    3.4Amended and Restated Bylaws (incorporated by reference to Exhibit 3.3 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on May 27, 2020).
    4.1Specimen Common Stock Certificate (incorporated by reference to Exhibit 4.1 to the Company’s Quarterly Report on Form 10-Q filed on August 13, 2020).
    4.2Form of Warrant (incorporated by reference to Exhibit 4.5 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
    4.3Form of Warrant (incorporated by reference to Exhibit 4.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 12, 2020.)
    4.4Form of placement agent’s warrant (incorporated by reference to Exhibit 4.2 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 12, 2020.)
    4.5Form of Common Warrant.
    4.6Form of placement agent’s warrant.
    4.7Form of pre-funded warrant.
    5.1Legal opinion of DLA Piper LLP (US).
  10.1#2020 Incentive Award Plan, effective May  26, 2020 (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on May 27, 2020).
  10.2#Form of Stock Option Grant Notice and Option Agreement (2020 Incentive Award Plan) (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on May 28, 2020).
  10.3#2017 Stock Plan (incorporated by reference to Exhibit 10.43 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.4#Form of Stock Option Agreement (2017 Stock Plan) (incorporated by reference to Exhibit 10.44 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.5#2007 Stock Plan (incorporated by reference to Exhibit 10.45 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.6#Form of Stock Option Agreement (2007 Stock Plan) (incorporated by reference to Exhibit 10.46 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).

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Exhibit Number

Description of Exhibit

  10.7#Form of Indemnification Agreement, between the Company and its officers and directors (incorporated by reference to Exhibit 10.51 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.8#Executive Employment Agreement, dated December  11, 2018, by and between the Company and Richard W. Pascoe (incorporated by reference to Exhibit 10.47 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.9#Notice of Grant of Stock Option, dated January  24, 2019, by and between the Company and Richard W. Pascoe (incorporated by reference to Exhibit 10.48 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.10#Amendment to Option and Employment Agreement, dated January 28, 2020, by and between the Company and Richard W. Pascoe (incorporated by reference to Exhibit 10.49 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.11#Executive Employment Agreement, dated April  16, 2019, by and between the Company and Martin Latterich (incorporated by reference to Exhibit 10.50 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.12Lease, dated January  3, 2020, by and between the Company and San Diego Sycamore, LLC (incorporated by reference to Exhibit 10.57 to Amendment No. 2 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on March 30, 2020).
  10.13Irrevocable Standby Letter of Credit, dated March  13, 2020, by and between the Company and San Diego Sycamore, LLC (incorporated by reference to Exhibit 10.69 to Amendment No. 2 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on March 30, 2020).
  10.14†Settlement, Release and Termination Agreement, dated April  5, 2019, by and among the Company, PUR Biologics, LLC, Wylde, LLC, Christopher Wiggins and Ryan Fernan (incorporated by reference to Exhibit 10.52 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.15Conversion, Termination and Release Agreement, dated August  26, 2016, by and among the Company, Jonathan Jackson, Lordship Ventures LLC and Lordship Ventures Histogen Holdings LLC (incorporated by reference to Exhibit 10.53 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.16Termination of Stockholder Agreements, dated January  28, 2020, by and among the Company, Lordship Ventures Histogen Holdings LLC, Pineworld Capital Limited, Gail K. Naughton, Ph.D. and certain trusts (incorporated by reference to Exhibit 10.54 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).

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Exhibit Number

Description of Exhibit

  10.17Second Amended and Restated Strategic Relationship Success Fee Agreement, dated January  28, 2020, by and between the Company and Lordship Ventures LLC (incorporated by reference to Exhibit 10.55 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.18Amended and Restated Release, dated January  28, 2020, by and among the Company, Jonathan Jackson, Lordship Ventures LLC, and Lordship Ventures Histogen Holdings LLC (incorporated by reference to Exhibit 10.56 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.19Exclusive License and Supply Agreement, dated September  30, 2016, by and between the Company and Pineworld Capital Limited (incorporated by reference to Exhibit 10.59 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.20†Amended and Restated License Agreement, dated December  16, 2013, by and between the Company and Suneva Medical, Inc. (incorporated by reference to Exhibit 10.60 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.21+Amended and Restated Supply Agreement, dated December  16, 2013, by and between the Company and Suneva Medical, Inc. (incorporated by reference to Exhibit 10.61 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.22+Amendment No. 1 to the Amended and Restated License Agreement and Amended and Restated Supply Agreement, dated July  12, 2017, by and among the Company, Suneva Medical, Inc. and Allergan Sales, LLC (incorporated by reference to Exhibit 10.62 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.23+Amendment No. 2 to Amended and Restated License Agreement, dated October  25, 2017, by and between the Company and Allergan Sales, LLC (incorporated by reference to Exhibit 10.63 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.24+Amendment No. 3 to Amended and Restated License Agreement and Amendment No.  2 to Amended and Restated Supply Agreement, dated March  22, 2019, by and between the Company and Allergan Sales, LLC (incorporated by reference to Exhibit 10.64 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).
  10.25+Amendment No. 4 to Amended and Restated License Agreement and Amendment No.  3 to Amended and Restated Supply Agreement, dated January 17, 2020, by and between the Company and Allergan Sales, LLC (incorporated by reference to Exhibit 10.65 to the Company’s Registration Statement on Form S-4 (Registration No. 333-236332) filed with the Securities and Exchange Commission on February 7, 2020).

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Exhibit Number

Description of Exhibit

  10.26#Employment Agreement between the Company and Susan A. Knudson, dated May  27, 2020 (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on May 28, 2020).
  10.27Purchase Agreement, by and between the Company and Lincoln Park, dated July  20, 2020 (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on July 20, 2020).
  10.28Registration Rights Agreement, by and between the Company and Lincoln Park, dated July  20, 2020 (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on July 20, 2020).
  10.29Collaborative Development and Commercialization Agreement, by and between the Company and Amerimmune LLC, dated October  26, 2020 (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on October 26, 2020).
  10.30Form of Securities Purchase Agreement (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 12, 2020.)
  10.31Engagement Letter between Histogen Inc. and H.C. Wainwright & Co., LLC, dated as of November  10, 2020 (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 12, 2020.)
  10.32Form of Securities Purchase Agreement.
  10.33Engagement Letter between Histogen Inc. and H.C. Wainwright & Co., LLC, dated as of December 28, 2020.
  23.1Consent of Mayer Hoffman McCann P.C., Independent Registered Public Accounting Firm.
  23.2Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm.
  23.3Consent of DLA Piper LLP (US) (included in Exhibit 5.1 hereto).
  24.1Power of Attorney (Included in the signature page hereto)
101.INSXBRL Instance Document.
101.SCHXBRL Taxonomy Extension Schema Document.
101.CALXBRL Taxonomy Extension Calculation Linkbase Document.
101.DEFXBRL Taxonomy Extension Definition Linkbase Document.
101.LABXBRL Taxonomy Extension Label Linkbase Document.
101.PREXBRL Taxonomy Extension Presentation Linkbase Document.

*

To be filed by amendment.

#

Indicates a management contract or compensatory plan, contract or arrangement.

Pursuant to Item 14. Indemnification601(b)(10) of DirectorsRegulation S-K, certain confidential portions of this exhibit were omitted by means of marking such portions with an asterisk because the identified confidential portions (i) are not material and Officers.(ii) would be competitively harmful if publicly disclosed.

+

Section 102Non-material schedules and exhibits have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The Company hereby undertakes to furnish supplementally copies of any of the General Corporation Law of the State of Delaware permits a corporation to eliminate the personal liability of directors of a corporation to the corporation or its stockholders for monetary damages for a breach of fiduciary duty as a director, except where the director breached his duty of loyalty, failed to act in good faith, engaged in intentional misconduct or knowingly violated a law, authorized the payment of a dividend or approved a stock repurchase in violation of Delaware corporate law or obtained an improper personal benefit. Our certificate of incorporation provides that no director of the Registrant shall be personally liable to it or its stockholders for monetary damages for any breach of fiduciary duty as a director, notwithstanding any provision of law imposing such liability, except to the extent that the General Corporation Law of the State of Delaware prohibits the elimination or limitation of liability of directors for breaches of fiduciary duty.

Section 145 of the General Corporation Law of the State of Delaware provides that a corporation has the power to indemnify a director, officer, employee or agent of the corporation, or a person serving at theomitted schedules and exhibits upon request of the corporation for another corporation, partnership, joint venture, trust or other enterprise in related capacities against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by the personSecurities and Exchange Commission.

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ITEM 17. UNDERTAKINGS

The undersigned registrant hereby undertakes:

(1)

To file, during any period in connection with an action, suitwhich offers or proceeding to which he was or is a party or is threatened to besales are being made, a partypost-effective amendment to any threatened, ending or completed action, suit or proceeding by reason of such position, if such person acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the corporation, and, in any criminal action or proceeding, had no reasonable cause to believe his conduct was unlawful, except that, in the case of actions brought by or in the right of the corporation, no indemnification shall be made with respect to any claim, issue or matter as to which such person shall have been adjudged to be liable to the corporation unless and only to the extent that the Court of Chancery or other adjudicating court determines that, despite the adjudication of liability but in view of all of the circumstances of the case, such person is fairly and reasonably entitled to indemnity for such expenses which the Court of Chancery or such other court shall deem proper.this registration statement:

 

(i)

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Our certificate of incorporation provides that we will indemnify each person who was or is a party or threatened to be made a party toTo include any threatened, pending or completed action, suit or proceeding (other than an actionprospectus required by or in the right of us) by reason of the fact that he or she is or was, or has agreed to become, a director or officer, or is or was serving, or has agreed to serve, at our request as a director, officer, partner, employee or trustee of, or in a similar capacity with, another corporation, partnership, joint venture, trust or other enterprise (all such persons being referred to as an “Indemnitee”), or by reason of any action alleged to have been taken or omitted in such capacity, against all expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred in connection with such action, suit or proceeding and any appeal therefrom, if such Indemnitee acted in good faith and in a manner he or she reasonably believed to be in, or not opposed to, our best interests, and, with respect to any criminal action or proceeding, he or she had no reasonable cause to believe his or her conduct was unlawful. Our certificate of incorporation provides that we will indemnify any Indemnitee who was or is a party to an action or suit by or in the right of us to procure a judgment in our favor by reason of the fact that the Indemnitee is or was, or has agreed to become, a director or officer, or is or was serving, or has agreed to serve, at our request as a director, officer, partner, employee or trustee of, or in a similar capacity with, another corporation, partnership, joint venture, trust or other enterprise, or by reason of any action alleged to have been taken or omitted in such capacity, against all expenses (including attorneys’ fees) and, to the extent permitted by law, amounts paid in settlement actually and reasonably incurred in connection with such action, suit or proceeding, and any appeal therefrom, if the Indemnitee acted in good faith and in a manner he or she reasonably believed to be in, or not opposed to, our best interests, except that no indemnification shall be made with respect to any claim, issue or matter as to which such person shall have been adjudged to be liable to us, unless a court determines that, despite such adjudication but in view of all of the circumstances, he or she is entitled to indemnification of such expenses. Notwithstanding the foregoing, to the extent that any Indemnitee has been successful, on the merits or otherwise, he or she will be indemnified by us against all expenses (including attorneys’ fees) actually and reasonably incurred in connection therewith. Expenses must be advanced to an Indemnitee under certain circumstances.

We have entered into indemnification agreements with each of our directors and officers. These indemnification agreements may require us, among other things, to indemnify our directors and officers for some expenses, including attorneys’ fees, judgments, fines and settlement amounts incurred by a director or officer in any action or proceeding arising out of his or her service as one of our directors or officers, or any of our subsidiaries or any other company or enterprise to which the person provides services at our request.

We maintain a general liability insurance policy that covers certain liabilities of directors and officers of our corporation arising out of claims based on acts or omissions in their capacities as directors or officers.

In any underwriting agreement we enter into in connection with the sale of common stock being registered hereby, the underwriters will agree to indemnify, under certain conditions, us, our directors, our officers and persons who control us within the meaningSection 10(a)(3) of the Securities Act of 1933, as amended,1933;

(ii)

To reflect in the prospectus any facts or Securities Act, against certain liabilities.

Item 15. Recent Sales of Unregistered Securities.

Set forth below is information regarding shares of capital stock issued by us since January 2010. Also included isevents arising after the consideration received by us for such shares and information relating to the sectioneffective date of the Securities Act,registration statement (or the most recent post-effective amendment thereof) which, individually or rule of the Securities and Exchange Commission, under which exemption from registration was claimed.

(a)

Issuances of Capital Stock and Warrants to Purchase Capital Stock

1.

In March and October 2010, we issued and sold an aggregate of $5.0 million in principal amount of convertible promissory notes, or the 2010 notes, to existing investors. The 2010 notes and the approximately $275,507 of accrued interest thereon were subsequently converted into 5,861,667 shares of Series B convertible preferred stock in February 2011. In connection with the issuance of these notes, we issued warrants which are exercisable for an aggregate of 2,333,320 shares of Series A convertible preferred stock at an initial exercise price per share of $0.01, for consideration equal to $0.0001 per warrant share. We expect these warrants to be net exercised in connection with the completion of this offering, resulting in the

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issuance of an aggregate of                    shares of common stock assuming an initial public offering price of $             per share (the midpoint of the price range set forth on the cover page of this prospectus). If these warrants are not exercised prior to the completion of this offering, they will terminate.

2.

In February and March 2011, we issued an aggregate of 36,417,224 shares of our Series B convertible preferred stock, including shares issuable upon conversion of the 2010 notes, to certain of our existing investors and new investors at a price per share of $0.90 for aggregate gross consideration of approximately $32.8 million. Of these shares, 5,576,789 shares were converted into shares of common stock in May 2013. The remaining shares of Series B convertible preferred stock will convert into 30,840,435 shares of common stock immediately prior to the closing of this offering.

In May 2013, we issued and sold an aggregate of $1.0 million in principal amount of convertible promissory notes to existing investors. In connection with the issuance of these notes, we issued warrants which are exercisable for an aggregate of 1,124,026 shares of Series B convertible preferred stock at an initial exercise price per share of $0.90, for consideration equal to $0.0001 per warrant share. In connection with the completion of this offering, the notes (including accrued interest thereon) will automatically convert into                 shares of common stock, assuming an initial public offering price of $         per share (the midpoint of the price range listed on the cover page of this prospectus) and assuming the conversion occurs on                 , 2013 (the expected closing date of this offering), and the warrants will become exercisable for an aggregate of                 shares of common stock, at an exercise price of $         per share.

No underwriters were involved in the foregoing sales of securities. The securities describedaggregate, represent a fundamental change in this section (a) of Item 15 were issued to investors in reliance upon the exemption from the registration requirements of the Securities Act, asinformation set forth in Section 4(2)the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20 percent change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement; and

(iii)

To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement.

(2)

That for the purpose of determining any liability under the Securities Act and Regulation D promulgated thereunder relativeof 1933 each such post-effective amendment shall be deemed to transactions by an issuer not involving any public offering,be a new registration statement relating to the extent an exemptionsecurities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3)

To remove from such registration was required. All purchasersby means of shares of convertible preferred stock described above represented to us in connection with their purchase that they were accredited investors and were acquiring the shares for their own account for investment purposes only and not with a view to, or for sale in connection with,post-effective amendment any distribution thereof and that they could bear the risks of the investment and could holdsecurities being registered which remain unsold at the securitiestermination of the offering.

(4)

That, for an indefinite periodthe purpose of time. The purchasers received written disclosures that the securities had not been registereddetermining liability under the Securities Act and thatof 1933 to any resale must be madepurchaser, each prospectus filed pursuant to Rule 424(b) as part of a registration statement relating to an offering, other than registration statements relying on Rule 430B or other than prospectuses filed in reliance on Rule 430A, shall be deemed to be part of and included in the registration statement as of the date it is first used after effectiveness. Provided, however, that no statement made in a registration statement or an available exemption from such registration.

(b)

Grants and Exerciseprospectus that is part of Stock Options. From January 2010 through December 31, 2012, we granted stock options to purchase an aggregate of 8,153,000 shares of our common stock at a weighted average exercise price of $0.07 per share, to certain of our employees, consultants and directors in connection with services provided to us by such persons. Of these, options to purchase 2,458,500 shares of common stock have been exercised through December 31, 2012 for aggregate consideration of $35,185, at a weighted average exercise price of $0.01 per share.

The stock options and the common stock issuable upon the exercise of such options as described in this section (b) of Item 15 were issued pursuant to written compensatory plans or arrangements with our employees and directors, in reliance on the exemption from the registration requirementsstatement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the Securities Act provided by Rule 701 promulgatedregistration statement will, as to a purchaser with a time of contract of sale prior to such first use, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such date of first use.

(5)

That, for the purpose of determining liability of the registrant under the Securities Act orof 1933 to any purchaser in the exemption set forth in Section 4(2) under the Securities Act and Regulation D promulgated thereunder relative to transactions by an issuer not involving any public offering. All recipients either received adequate information about us or had access, through employment or other relationships, to such information.

Allinitial distribution of the foregoing securities are deemed restricted securities for purposessecurities:

The undersigned registrant undertakes that in a primary offering of securities of the undersigned registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

(i)

Any preliminary prospectus or prospectus of the Securities Act. All certificates representingundersigned registrant relating to the issued shares of capital stock described in this Item 15 included appropriate legends setting forth that the securities had not been registered and the applicable restrictions on transfer.

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Item 16. Exhibits and Financial Statement Schedules.

(a)

Exhibits.offering required to be filed pursuant to Rule 424;

 

Exhibit
Number

Description of Exhibit

1.1*

Underwriting Agreement

2.1

Distribution Agreement, dated January 10, 2013, by and between Idun Pharmaceuticals, Inc. and the Registrant

3.1

Restated Certificate of Incorporation, as amended (currently in effect)

3.2

Amended and Restated Bylaws (currently in effect)

3.3*

Form of Amended and Restated Certificate of Incorporation (to be effective immediately prior to the closing of this offering)

3.4*

Form of Amended and Restated Bylaws (to be effective immediately prior to the closing of this offering)

4.1*

Specimen stock certificate evidencing the shares of common stock

4.2

First Amended and Restated Investor Rights Agreement, dated February 9, 2011

4.3

Form of Warrant issued to investors in the Registrant’s 2010 bridge financing

4.4

Form of Convertible Promissory Note issued to investors in the Registrant’s 2013 bridge financing

4.5

Form of Warrant issued to investors in the Registrant’s 2013 bridge financing

5.1*

Opinion of Latham & Watkins LLP

10.1†

Stock Purchase Agreement, dated July 29, 2010, by and between Pfizer Inc. and the Registrant

10.2

Promissory Note, dated July 29, 2010, issued by the Registrant to Pfizer Inc.

10.3

Office Lease Agreement, dated April 7, 2006, by and between EOP-Plaza at La Jolla, L.L.C. and the Registrant

10.4

First Amendment to Office Lease Agreement, dated November 30, 2009, by and between EOP-Plaza at La Jolla, L.L.C., and the Registrant

10.5

Second Amendment to Office Lease Agreement, dated May 2, 2011, by and between Pacifica Tower LLC, sucessor in interest to EOP-Plaza at La Jolla, L.L.C., and the Registrant

10.6

Third Amendment to Office Lease Agreement, dated March 28, 2012, by and between Pacifica Tower LLC, sucessor in interest to EOP-Plaza at La Jolla, L.L.C., and the Registrant

10.7

Sublicense Agreement, dated March 1, 2013, by and between the Registrant and Idun Pharmaceuticals, Inc.

10.8*

Form of Indemnity Agreement for Directors and Officers

10.9#

2006 Equity Incentive Award Plan, as amended, and form of option agreements thereunder

10.10#*

2013 Equity Incentive Plan and form of option agreement thereunder

10.11#*

2013 Employee Stock Purchase Plan

10.12#*

Independent Director Compensation Policy

10.13#Employment Agreement, dated December 17, 2008, by and between Steven J. Mento, Ph.D. and the Registrant
10.14#Employment Agreement, dated December 17, 2008, by and between Alfred P. Spada, Ph.D. and the Registrant
10.15#

Employment Agreement, dated November 1, 2011, by and between Gary C. Burgess, M.B., Ch.B. M.Med. and the Registrant

II-4

II-7


(ii)

Exhibit
Number

Description of Exhibit

10.16#*Employee Incentive Compensation Plan
23.1

Consent of Ernst & Young LLP, independent registered public accounting firm

23.2*

Consent of Latham & Watkins LLP (included in Exhibit 5.1)

24.1

Power of Attorney (included on signature page)

*

To be filed by amendment.Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned registrant or used or referred to by the undersigned registrant;

Portions of this exhibit (indicated by asterisks) have been omitted pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934.

(iii)

The portion of any other free writing prospectus relating to the offering containing material information about the undersigned registrant or its securities provided by or on behalf of the undersigned registrant; and

#

Indicates management contract or compensatory plan.

(iv)

(b) Financial Statement Schedules. Schedules not listed above have been omitted because the information required to be set forth thereinAny other communication that is not applicable or is shownan offer in the financial statements or notes thereto.offering made by the undersigned registrant to the purchaser.

Item 17. Undertakings.

(6)

The undersigned registrantRegistrant hereby undertakes to provide to the underwriters at the closing specified in the underwriting agreement certificates in such denominations and registered in such names as required by the underwriters to permit prompt delivery to each purchaser.

(7)

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrantRegistrant pursuant to the foregoing provisions described in Item 14 above, or otherwise, the registrantRegistrant has been advised that in the opinion of the Securities and Exchange CommissionSEC such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrantRegistrant of expenses incurred or paid by a director, officer or controlling person of the registrantRegistrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

(8)

The undersigned Registrant hereby undertakes that:undertakes:

(1)

(1)

ForThat for purposes of determining any liability under the Securities Act, the information omitted from the form of prospectus filed as part of this registration statement in reliance upon Rule 430A and contained in a form of prospectus filed by the registrant pursuant to Rule 424(b)(1) or (4) or 497(h) under the Securities Act shall be deemed to be part of this registration statement as of the time it was declared effective; and

(2)

For the purpose of determining any liability under the Securities Act, each post-effective amendment that contains a form of prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

II-5


SIGNATURES

Pursuant to the requirements of the Securities Act, the registrant has duly causedinformation omitted from the form of prospectus filed as part of this registration statement to be signed on its behalfin reliance upon Rule 430A and contained in a form of prospectus filed by the undersigned, thereunto duly authorized, in the City of San Diego, State of California, on this 13th day of June, 2013.

CONATUS PHARMACEUTICALS INC.

By:

/s/ Steven J. Mento, Ph.D.

Steven J. Mento, Ph.D.
President and Chief Executive Officer

SIGNATURES AND POWER OF ATTORNEY

We, the undersigned officers and directors of Conatus Pharmaceuticals Inc., hereby severally constitute and appoint Steven J. Mento, Ph.D., and Charles J. Cashion, and each of them singly (with full power to each of them to act alone), our true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution in each of them for him or her and in his or her name, place and stead, and in any and all capacities, to sign any and all amendments (including post-effective amendments) to this registration statement (or any other registration statement for the same offering that is to be effective upon filingRegistrant pursuant to Rule 462(b)424(b)(1) or (4), or 497(h) under the Securities Act of 1933), and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessaryshall be deemed to be done in and aboutpart of this registration statement as of the premises, as full to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents ortime it was declared effective.

(2)

That for the purpose of determining any of them, or their or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements ofliability under the Securities Act, each post-effective amendment that contains a form of 1933,prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and this Registration Statement has been signed byoffering of such securities at that time shall be deemed to be the following persons in the capacities held on the dates indicated.initial bona fide offering thereof.

Signature

Title

Date

/s/ Steven J. Mento, Ph.D.

Steven J. Mento, Ph.D.

President, Chief Executive Officer and Director

(principal executive officer)

June 13, 2013

/s/ Charles J. Cashion

Charles J. Cashion

Senior Vice President, Finance, Chief Financial Officer and Secretary

(principal financial and accounting officer)

June 13, 2013

/s/ David F. Hale

David F. Hale

Chairman of the Board of DirectorsJune 13, 2013

/s/ Paul H. Klingenstein

Paul H. Klingenstein

DirectorJune 13, 2013

/s/ Louis Lacasse

Louis Lacasse

DirectorJune 13, 2013

/s/ Shahzad Malik, M.D.

Shahzad Malik, M.D.

DirectorJune 13, 2013

/s/ Marc Perret

Marc Perret

DirectorJune 13, 2013

/s/ James Scopa

James Scopa

DirectorJune 13, 2013

/s/ Harold Van Wart, Ph.D.

Harold Van Wart, Ph.D.

DirectorJune 13, 2013


Exhibit Index

Exhibit
Number

Description of Exhibit

1.1*Underwriting Agreement
2.1Distribution Agreement, dated January 10, 2013, by and between Idun Pharmaceuticals, Inc. and the Registrant
3.1Restated Certificate of Incorporation, as amended (currently in effect)
3.2Amended and Restated Bylaws (currently in effect)
3.3*Form of Amended and Restated Certificate of Incorporation (to be effective immediately prior to the closing of this offering)
3.4*Form of Amended and Restated Bylaws (to be effective immediately prior to the closing of this offering)
4.1*Specimen stock certificate evidencing the shares of common stock
4.2First Amended and Restated Investor Rights Agreement, dated February 9, 2011
4.3Form of Warrant issued to investors in the Registrant’s 2010 bridge financing
4.4Form of Convertible Promissory Note issued to investors in the Registrant’s 2013 bridge financing
4.5Form of Warrant issued to investors in the Registrant’s 2013 bridge financing
5.1*Opinion of Latham & Watkins LLP
10.1†Stock Purchase Agreement, dated July 29, 2010, by and between Pfizer Inc. and the Registrant
10.2Promissory Note, dated July 29, 2010, issued by the Registrant to Pfizer Inc.
10.3Office Lease Agreement, dated April 7, 2006, by and between EOP-Plaza at La Jolla, L.L.C. and the Registrant
10.4First Amendment to Office Lease Agreement, dated November 30, 2009, by and between EOP-Plaza at La Jolla, L.L.C., and the Registrant
10.5Second Amendment to Office Lease Agreement, dated May 2, 2011, by and between Pacifica Tower LLC, sucessor in interest to EOP-Plaza at La Jolla, L.L.C., and the Registrant
10.6Third Amendment to Office Lease Agreement, dated March 28, 2012, by and between Pacifica Tower LLC, sucessor in interest to EOP-Plaza at La Jolla, L.L.C., and the Registrant
10.7Sublicense Agreement, dated March 1, 2013, by and between the Registrant and Idun Pharmaceuticals, Inc.
10.8*Form of Indemnity Agreement for Directors and Officers
10.9#2006 Equity Incentive Award Plan, as amended, and form of option agreements thereunder
10.10#*2013 Equity Incentive Plan and form of option agreement thereunder
10.11#*2013 Employee Stock Purchase Plan
10.12#*Independent Director Compensation Policy
10.13#Employment Agreement, dated December 17, 2008, by and between Steven J. Mento, Ph.D. and the Registrant
10.14#Employment Agreement, dated December 17, 2008, by and between Alfred P. Spada, Ph.D. and the Registrant
10.15#

Employment Agreement, dated November 1, 2011, by and between Gary C. Burgess, M.B., Ch.B. M.Med. and the Registrant


Exhibit
Number

Description of Exhibit

10.16#*Employee Incentive Compensation Plan
23.1Consent of Ernst & Young LLP, independent registered public accounting firm
23.2*Consent of Latham & Watkins LLP (included in Exhibit 5.1)
24.1Power of Attorney (included on signature page)

 

*

To be filed by amendment.

II-8


SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the Registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of San Diego, California, on the 29th day of December, 2020.

HISTOGEN INC.

By:

 /s/ Richard W. Pascoe

 Richard W. Pascoe.

 Chief Executive Officer and President

Portions of this exhibit (indicated by asterisks) have been omitted pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934.

Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

Signature

Title

Date

/s/ Richard W. Pascoe

Richard W. Pascoe

Chief Executive Officer, President and Director

(Principal Executive Officer)

December 29, 2020

/s/ Susan A. Knudson

Susan A. Knudson

Chief Financial Officer and Executive Vice President

(Principal Financial and Accounting Officer)

December 29, 2020

*

Steven J. Mento, Ph.D.

Director

December 29, 2020

*

Daniel L. Kisner, M.D.

Director

December 29, 2020

*

Stephen Chang, Ph.D.

Director

December 29, 2020

*

David H. Crean, Ph.D.

Director

December 29, 2020

*

Jonathan Jackson

Director

December 29, 2020

*

Brian M. Satz

Director

December 29, 2020

*

Hayden Yizhuo Zhang

Director

December 29, 2020

#

Indicates management contract or compensatory plan.

 

*By:/s/ Richard W. Pascoe

Richard W. Pascoe

Attorney-in-fact