As filed with the Securities and Exchange Commission on August 4, 2008June 13, 2019.



Registration Statement No. 333-152557

333-231723

 
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Amendment No. 1 to
Form S-1
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
RXi PHARMACEUTICALS CORPORATION
(Exact name of registrant as specified in its charter)

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
Delaware283420-8099512

Amendment No. 2

to

FORM S-1
REGISTRATION STATEMENT
Under
THE SECURITIES ACT OF 1933
SELLAS Life Sciences Group, Inc.
(Exact name of registrant as specified in its charter)

Delaware283420-8099512
(State or other jurisdiction of
incorporation or organization)
(Primary Standard Industrial
Classification Code Number)
(I.R.S. Employer
Identification No.)Number)

60 Prescott Street15 West 38thSt., 10th Floor

Worcester, Massachusetts 01605
(508) 767-3861

New York, NY 10018

(917) 438-4353

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

Angelos M. Stergiou, M.D., Sc.D., h.c.

President and telephone number, including area code, of registrant’s principal executive offices)

Tod Woolf, Ph.D.
Chief Executive Officer

SELLAS Life Sciences Group, Inc.

15 West 38thSt., 10th Floor

New York, NY 10018

(917) 438-4353

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

RXi Pharmaceuticals Corporation

60 Prescott Street
Worcester, Massachusetts 01605
Phone: (508) 767-3861
Fax: (508) 767-3862
(Name, address, including zip code and telephone number, including area code, of agent for service)

Copies to:

Marc Rubenstein, Esq.

Ropes & Gray LLP
One International Place
Boston, MA 02110-2624
Phone: (617) 951-7000
Fax: (617) 951-7050

Joel I. Papernik
Daniel A. Bagliebter

Cliff M. Silverman
Mintz, Levin, Ferris, Cohn, Glovsky & Popeo, P.C.
666 Third Avenue
New York, NY 10017
Tel: (212) 935-3000

Barbara Wood
Executive Vice President, General
Counsel & Secretary
SELLAS Life Sciences Group, Inc.
15 West 38th St., 10th Floor
New York, NY 10018
Tel: (917) 438-4353
Yvan-Claude J. Pierre
Daniel I. Goldberg
Marianne Sarrazin
Cooley LLP
55 Hudson Yards
New York, NY 10001
Tel: (212) 479-6000

Approximate date of commencement of proposed sale to public:As soon as practicable after this registration statement becomesRegistration Statement is declared 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.þx

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.o¨

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.o¨

If this Form 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.o¨

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 emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer” andfiler,” “smaller reporting company,” and “emerging growth company” inRule 12b-2 of the Exchange Act. (Check one):

Large accelerated filero¨Accelerated filero¨
Non-accelerated fileroxSmaller reporting companyþx
Emerging growth company¨
(Do

If an emerging growth company, indicate by check mark if the registrant has elected not check if a smaller reporting company)

The Registrant hereby amends this Registration Statement on such dateto use the extended transition period for complying with any new or dates as may be necessaryrevised financial accounting standards provided pursuant to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a)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)(7)
 
Common Stock, $0.0001 par value per share(2)(3)(4) $23,000,000   $2,787.60 
Pre-Funded Common Stock Purchase Warrants and Shares of Common Stock, $0.0001 par value per share, underlying Pre-Funded Common Stock Purchase Warrants(2)(3)        
Common Stock Purchase Warrants(2)(3)(5)        
Shares of Common Stock, $0.0001 par value per share, underlying Common Stock Purchase Warrants(2)(3)(4) $25,300,000(6)   3,066.36 
Total Registration Fee $48,300,000  $5,853.96 

(1)Estimated solely for the purpose of calculating the amount of registration fee pursuant to Rule 457(o) under the Securities Act of 1933, as amended (the “Securities Act”).

(2)Pursuant to Rule 416, under the Securities Act the securities being registered hereunder include such indeterminate number of additional shares of common stock as may be issued after the date hereof as a result of stock splits, stock dividends or similar transactions.

(3)The proposed maximum offering price of the common stock and accompanying warrants proposed to be sold in the offering will be reduced on a dollar-for-dollar basis based on the offering price of any pre-funded warrants offered and sold in the offering.

(4)

Includes the aggregate offering price of additional shares of common stock and/or warrants the underwriters have the option to purchase.

(5)There will be issued a warrant to purchase one (1) share of common stock for every share or pre-funded warrant offered (at an exercise price of 110% of the public offering price).

(6)

Relates to the shares of Common Stock, $0.0001 par value per share, underlying the Common Stock Purchase Warrants, if such Common Stock Purchase Warrants are exercised for cash. If such Common Stock Purchase Warrants are exercised cashlessly, then the underlying shares of Common Stock, $0.0001 par value per share, shall be covered by the Registration Fee in respect of the Common Stock, $0.0001 par value per share and accompanying Common Stock Purchase Warrants.

(7)Filing fee of $5,575.20 previously paid.

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

The information contained in this preliminary prospectus is not complete and may be changed. We may not sell these securities until the Registration Statement shall become effective on such date asregistration statement filed with the Securities and Exchange Commission acting pursuantis effective. This preliminary prospectus is not an offer to said Section 8(a), may determine.

sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.


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

SUBJECT TO COMPLETION, DATED AUGUST 4, 2008JUNE 13, 2019

 

PRELIMINARY PROSPECTUS

(RXI LOGO)

RXi PHARMACEUTICALS CORPORATION

47,619,048 Shares of Common Stock
This prospectus relates

Pre-funded Warrants to the resalePurchase Shares of Common Stock

Common Warrants to Purchase up to 1,103,29947,619,048 Shares of Common Stock

We are offering 47,619,048 shares of our common stock and warrants to purchase up to an aggregate of 47,619,048 shares of our common stock (and the shares of common stock that are issuable from time to time upon exercise of RXi Pharmaceuticals Corporation (“RXi” or “the Company”)the common warrants). We are also offering to each purchaser whose purchase of shares 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% 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. Each pre-funded warrant will be exercisable for one share of our common stock. The purchase price of each pre-funded warrant will equal the price per share at which the shares of common stock are being sold to the public in this offering, minus $0.01, and the exercise price of each pre-funded warrant will be $0.01 per share. This prospectus also relates to the shares of common stock issuable upon exercise of any pre-funded warrants sold in this offering. 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. Each share of common stock and pre-funded warrant is being sold together with a warrant to purchase one (1) share of our common stock, at an exercise price of $          per share (representing 110% of the public offering price).Because we will issue a common warrant to purchase one (1) share of our common stock for each share of our common stock and for each pre-funded warrant 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. The common warrants will be exercisable immediately and will expire five years from the date of issuance. The shares of common stock or pre-funded warrants, and the accompanying common warrants, can only be purchased together in this offering but will be offered for resale by certain stockholders of the Company listed in this prospectus (the “Selling Stockholders”).

The shares of common stock to which this prospectus relates mayissued separately and will be sold from time to time by and for the accounts of the Selling Stockholders named in this prospectus or in supplements to this prospectus. The Selling Stockholders may sell all or a portion of these shares from time to time through public or private transactions at prevailing market prices, at prices related to prevailing market prices or at privately negotiated prices.
The Company will not receive any of the proceeds from the sale of the shares of common stock offered by the Selling Stockholders.
The Company’simmediately separable upon issuance.

Our common stock is quotedlisted on the NASDAQThe Nasdaq Capital Market under the symbol “RXII”. On August 1, 2008, the“SLS.” The last reported closingsale price of the Company’sfor our common stock on the NASDAQThe Nasdaq Capital Market on June 11, 2019 was $7.40$0.42 per share.

In reviewing The actual number of securities, and the offering price per share, pre-funded warrant and accompanying common warrant, and the exercise price for the accompanying common warrant, will be as determined between us and the underwriters at the time of pricing, and may be at a discount to the current market price. Therefore, the recent market price used throughout this prospectus you should carefully considermay not be indicative of the matters described underactual public offering price for our common stock and for the headingpre-funded warrants. There is no established public trading market for the pre-funded warrants or the common warrants, and we do not expect a market to develop. In addition, we do not intend to apply for a listing of the pre-funded warrants or the common warrants on any national securities exchange.

Investing in our common stock involves a high degree of risk. See “Risk Factors” beginning on page 6.

7 of this prospectus.

 

Per
Share and

Accompanying Common

Warrant

Per Pre-
Funded
Warrant and

Accompanying Common

Warrant

Total(1)
Public offering price(2)$$$
Underwriting discounts and commissions(3)$$$
Proceeds, before expenses, to us$$$

(1)Assumes no sale of pre-funded warrants.

(2)The public offering price is $       per share of common stock and $0.01 per accompanying common warrant and $       per pre-funded warrant  and $0.01 per accompanying common warrant.

(3)See the section entitled “Underwriting” beginning on page 59 of this prospectus for a description of the compensation payable to the underwriters.

We have also granted an option to the underwriters to purchase up to 7,142,857 additional shares of common stock and/or common warrants on the same terms and conditions set forth above from us within 45 days after the date of this prospectus to cover over-allotments, if any.

Neither the Securities and Exchange Commission, or the SEC, 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.

The underwriters expect to deliver the shares of common stock and any pre-funded warrant and accompanying common warrant to purchasers on or about         , 2019.

Sole Book-Running Manager

A.G.P.

 

Co-Manager

Maxim Group, LLC

The date of this prospectus is             , 2008.

2019.


Table of Contents
 

TABLE OF CONTENTS

PROSPECTUS SUMMARY1
17
644
2046
2147
2148
2150
2151
2254
2255
2459
2663
4163
5963
65
79
81
84
86
89
90
90
90
91
F-1
EX-4.6 - Amendment to Stockholder Agreement dated July 28, 2008
EX-4.7 - Amendment to Exhibit A to Contribution Agreement dated July 28, 2008
EX-5.1 - Opinion of Ropes & Gray, LLP
EX-23.1 - Consent of BDO Seidman, LLP
All references to “RXi,” “we,” “our,” “us,” and similar terms in this prospectus refer to RXi Pharmaceuticals Corporation. All references to “CytRx” in this prospectus refer to CytRx Corporation (NASDAQ: CYTR), from whom we were spun-out in February 2008.
Some of the industry data contained in this prospectus are derived from data from various third-party sources. We have not independently verified any of this information and cannot assure you of its accuracy or completeness. While we are not aware of any misstatements regarding any industry data presented herein, such data is subject to change based on various factors, including those discussed under the heading “Risk Factors” in this prospectus.


i


ABOUT THIS PROSPECTUS
This prospectus is part of a registration statement that we have filed with the Securities and Exchange Commission (the “SEC” or the “Commission”) utilizing a shelf registration process. Under this shelf registration process, the Selling Stockholders may, from time to time, offer and sell shares of the common stock of the Company pursuant to this prospectus. It is important for you to read and consider all of the information contained in this prospectus and any applicable prospectus supplement before making a decision whether to invest in the common stock. You should also read and consider the information contained in the documents that we have incorporated by reference as described in “Where You Can Find More Information” and “Incorporation of Certain Documents by Reference” in this prospectus.
You should rely only on the information contained in this prospectus and any applicable prospectus supplement, including the informationwe have included or incorporated by reference. Wereference into this prospectus. Neither we nor the underwriters have authorized any dealer, salesman or other person to give any information or to make any representation other than those contained or incorporated by reference into this prospectus. You must not authorized anyone to provide you with different information. We arerely upon any information or representation not offeringcontained or incorporated by reference into this prospectus. This prospectus does not constitute an offer to sell or soliciting offersthe solicitation of an offer to buy and will notany securities other than the registered securities to which they relate, nor does this prospectus constitute an offer to sell anyor the solicitation of an offer to buy securities in any jurisdiction whereto any person to whom it is unlawful. unlawful to make such offer or solicitation in such jurisdiction.

You should not assume that the information contained in this prospectus is accurate on any date subsequent to the date set forth on the front of the document or that any prospectus supplement, as well as information contained in a document that we have previously filed or in the future will file with the SEC and incorporateincorporated by reference into this prospectus orherein is correct on any prospectus supplement, is accurate only as ofdate subsequent to the date of the document incorporated by reference, even though this prospectus is delivered, or securities are sold, on a later date.

No action is being taken in any jurisdiction outside the United States to permit a public offering of our common stock or possession or distribution of this prospectus in that jurisdiction. Person who come into possession of this prospectus in jurisdictions outside the United States are required to inform themselves about and to observe any restrictions as to this offering and the distribution of this prospectus applicable to that jurisdiction.

“SELLAS Life Sciences Group, Inc.,” “SELLAS,” the SELLAS logo, and other trademarks or service marks of SELLAS appearing in this prospectus are the property of our company. Other third-party logos and product/trade names are registered trademarks or trade names of their respective companies. Solely for convenience, trademarks and tradenames referred to in this prospectus appear (after the first usage) without the ® and ™ symbols, but those references are not intended to indicate, in any way, that we will not assert, to the fullest extent under applicable law, our rights or that the applicable owner will not assert its rights, to these trademarks and tradenames.

This prospectus supplementcontains or incorporates by reference summaries of certain provisions contained in some of the document containing that information, asdocuments described herein, but reference is made to the case may be.


ii


PROSPECTUS SUMMARY
The following is a summaryactual documents for complete information. All the summaries are qualified in their entirety by the actual documents. Copies of some of the documents referred to herein have been filed or have been incorporated by reference as exhibits to the registration statement of which this prospectus forms a part, and you may obtain copies of those documents as described in this prospectus under the heading “Where You Can Find More Information.”

i

PROSPECTUS SUMMARY

This summary highlights information contained in other parts of this prospectus. In addition toBecause it is only a summary, it does not contain all the information you should consider before investing in our securities and it is qualified in its entirety by, and should be read in conjunction with, the more detailed information appearing elsewhere in this summary, we urge you toprospectus and the information incorporated by reference herein. You should read the entire prospectusall such documents carefully, especially the risks relating to our business and common stock discussed under the heading “Risk Factors”risk factors and our audited consolidated financial statements.statements and the related notes included herein, before deciding to buy our securities. Unless the context requires otherwise, references in this prospectus to “SELLAS,” “Company,” “we,” “us” and “our” refer to SELLAS Life Sciences Group, Inc. and our subsidiaries.

RXi Pharmaceuticals Corporation
Our Business

Company Overview

We are a discovery-stagelate-stage biopharmaceutical company pursuingfocused on the development and potential commercialization of proprietary therapeutics basednovel cancer immunotherapeutics for a broad range of indications.

Pipeline

Galinpepimut-S, or GPS

Our lead product candidate, galinpepimut-S, or GPS, is a cancer immunotherapeutic agent licensed from Memorial Sloan Kettering Cancer Center, or MSK, that targets the Wilms tumor 1, or WT1, protein, which is present in 20 or more cancer types. Based on RNA interference (RNAi)its mechanism of action as a directly immunizing agent, GPS has potential as a monotherapy or in combination with other immunotherapeutic agents to address a broad spectrum of hematologic, or blood, cancers and solid tumor indications.

In November 2018, following discussions with the U.S. Food and Drug Administration, or FDA, regarding a clinical trial design and biostatistical plan, we commenced preparations for a Phase 3 trial for GPS monotherapy in patients with acute myeloid leukemia, or AML, in the maintenance setting after achievement of their second complete remission, or CRem2, following successful completion of second-line antileukemic therapy. This trial is expected to serve as the basis for a Biologics License Application, or BLA, submission, subject to positive results. We are currently ready to start this Phase 3 trial, pending receipt of funding. The study is expected to enroll approximately 116 patients at approximately 50 clinical sites in the United States and Europe and is contemplated to have a planned interim safety and futility analysis after 80 events (deaths).

In December 2018, we initiated a Phase 1/2 multi-arm ("basket" type) clinical study of GPS in combination with Merck & Co., Inc.’s anti-PD-1 therapy, Keytruda® (pembrolizumab). We plan to enroll approximately 90 patients at up to 20 centers in the United States. The initial tumor types to be treated will be AML (in patients having achieved partial response as their best hematological response after four cycles of therapy with hypomethylating agents), and ovarian cancer (second or third line), to be followed by triple negative breast cancer, or TNBC, (second line), small cell lung cancer, or SCLC, (second line), and colorectal cancer (third or fourth line).

GPS was granted Orphan Drug Product Designations from the FDA as well as Orphan Medicinal Product Designations from the European Medicines Agency, or EMA, for GPS in AML, malignant pleural mesothelioma, or MPM, and multiple myeloma, or MM, as well as Fast Track Designation for AML, MPM, and MM from the FDA.

Nelipepimut-S or NPS

Nelipepimut-S, or NPS, is a cancer immunotherapy targeting the human epidermal growth factor receptor, or HER2, expressing cancers. Data presented in 2018 from our Phase 2b clinical trial of the combination of trastuzumab (Herceptin®) plus NPS in HER1/2+ breast cancer patients in the adjuvant setting to prevent recurrences showed a clinically and statistically significant improvement in the disease-free survival, or DFS, rate for the treatmentTNBC cohort at 24 months for patients treated with NPS plus trastuzumab of human diseases.92.6% compared to 70.2% for those treated with trastuzumab alone. In October 2018, the Data Safety Monitoring Board, or DSMB, unanimously concluded that the final analysis of the Phase 2b study data, with a median follow-up of 26 months, confirmed that TNBC patients should be the key target population for the development of trastuzumab plus NPS in the adjuvant setting in early-stage HER2 1+/2+ breast cancer patients. We believe RNAi-based therapeuticsare having ongoing discussions with the FDA since January 2019 to define an optimal path for further development of the combination of NPS plus trastuzumab in TNBC.

FBP-targeting bivalent vaccine (GALE-301/-302)

GALE-301 and GALE 302 are cancer immunotherapies that target the E39 peptide derived from the folate binding protein, or FBP. In a Phase 1/2a investigator sponsored trial, or IST, assessing GALE-301 in ovarian and endometrial cancers, we observed improvement in the 24-month DFS rate, in a small number of patients treated with the optimal dose. We are evaluating GALE-301/302 for potential internal development in a Phase 2 setting for ovarian cancer, strategic partnership, or other type of candidate rationalization.

1

The chart below summarizes the current status of our clinical development pipeline:

Our Strategy

We seek to use our expertise and understanding of cancer immunotherapy and general cancer therapeutic product development to advance novel products that have the potential to effectively treat a broad arraytransform the current standard of diseases by interfering with (sometimes referred to as silencing) the expression of targeted disease-associated genes. Our initial focus is on the treatment of neurological diseases, metabolic diseases and cancer.

RXi was founded by CytRx and four prominent researchers in the field of RNAi who are now all members of our Scientific Advisory Board, including Dr. Craig Mello, recipient of the 2006 Nobel Prize for Medicine for his co-discovery of RNAi, and Blais University Chair of Molecular Medicine at the University of Massachusetts Medical School, (“UMMS”). We began operations as a majority-owned subsidiary of CytRx Corporation in January 2007 for the purpose of accelerating the discovery of RNAi therapeutics previously sponsored by CytRx. On March 11, 2008, CytRx distributed approximately 36% of our common stock to its shareholders of record as of March 6, 2008 (the “Distribution”), and awarded approximately 27,700 shares of our common stock to certain of its directors, officers and other employees (the “Award”). CytRx currently owns approximately 46% of our common stock.
RNAi is a naturally occurring mechanism for the regulation of gene expression that has the potential to be harnessed to selectively inhibit the activity of any human gene. As evidenced by Kim and Rossi’s review published in March 2007 inNature Reviews Genetics,it is believed that this inhibition may potentially treat human diseases by “turning off” genes that lead to disease. By utilizing our expertise in RNAi and the RNAi technology platform we have licensed, we intend to identify lead compounds and advance towards pre-clinical and clinical development programs in the following therapeutic areas:
• Neurology.  Initially, we are pursuing research in ALS (amyotrophic lateral sclerosis, commonly known as Lou Gehrig’s Disease). Some forms of ALS are caused by defects in a gene called SOD1. Early preclinical studies conducted by RXi advisors, Dr. Tariq Rana and Dr. Zuoshang Xu at UMMS, showed promising results in animals using an RNAi compound to selectively inhibit the SOD1 gene.
• Metabolic disease.  We have in-licensed intellectual property developed by Dr. Czech (one of our scientific co-founders and scientific advisory board members) on genes that appear to be important regulators of metabolism. Studies conducted in Dr. Czech’s laboratory at UMMS and by others at Imperial College of London have demonstrated that inactivation of one of these genes, called RIP140, can cause fat cells to metabolize rather than store fat. Mice in these studies that did not express RIP140 remained lean and non-diabetic even when maintained on a high-fat diet. We are currently designing RNAi compounds targeting RIP140 as a potential treatment for obesity and obesity-related type 2 diabetes.
• Oncology.  We are initiating a program to develop RNAi drugs for use in oncology, which is led by two of our key scientific advisors, Dr. Greg Hannon and Dr. Nicholas Dean, both of whom are prominent researchers in targeting oncogene pathways.
• Additional indications.  There are many well-studied genes associated with numerous diseases that have been identified but have been difficult to target with normal medicinal chemistry and which we believe, based on both published studies and our own research, that RNAi technology may be able to target and, therefore, potentially treat such diseases. With the pioneering work we are doing in developing the RXi technology platform, we believe that we will discover many more drug candidates than can be advanced into clinical trials. For research on target genes in our portfolio that are not funded internally, we will seek to identify and work with partners in the discovery and development process to build our development pipeline.


1


We believe that we possess a strong intellectual property portfolio. We have secured exclusive and nonexclusive licenses from academic institutions under certain issued and pending patents and patent applications covering RNAi technologies in the following three categories: (i) therapeutic targets, (ii) chemistry and configurations of RNAi and (iii) delivery of RNAi within the body.
We have an accomplished Scientific Advisory Board (“SAB”) which includes Craig C. Mello, Ph.D., Tariq Rana, Ph.D., Gregory Hannon, Ph.D., Michael Czech, Ph.D., Nicholas Dean, Ph.D., Victor Ambros, Ph.D. and Nassim Usman, Ph.D. Generally, members of our SAB (“SAB members”) participate in scientific planning meetings during which our management team and SAB members review the progress of our research and licensing efforts and provide technological input including suggestions for new experiments, suggestions regarding the therapeutic relevance of target genes and suggestions regarding new technologies we may want to consider licensing. Further, along with our management team, SAB members participate in conferences and discussions with potential alliance partners, during which they help respond to technological inquiries and field questions in their areas of expertise regarding licensed technology they helped to develop. Our SAB members are not employees, and have other professional commitments to which they must devote substantial time. Each has agreed, however, to commit between 100 to 140 hours per year to their RXi service, including attendance of the meetings and conferences described above. These relationships with our SAB members are governed by SAB advisory board agreements, each of which is terminable at any time by either party. Upon termination, the SAB member would have no further obligation or duty to perform any advisory services to us or to remain as an advisor in any capacity.
Our Competitive Strengths
We believe we are well positioned to compete successfully in the RNAi-based therapeutics market as we have accomplished scientific advisors with experience in RNAi, management that is experienced in commercializing products and a strong early intellectual property position covering (i) key therapeutic targets, (ii) proprietary nanotransporter delivery of RNAi to tissues, and (iii) novel approaches to RNAi chemistry. Further, we are focusing on significant unmet medical needs, initially in neurology, metabolic disease and oncology.
Business Strategy
We intend to use our intellectual property and expertise in RNAi to develop and, if we obtain regulatory approval, commercialize RNAi compounds.care. The key elementscomponents of our business strategy are as follows:

·Continue to rapidly advance our pipeline of product candidates through clinical development, specifically our potential first-in-class, lead immunotherapy product candidate, GPS, which we are currently developing in both monotherapy and combination therapy settings.

• ·We intend to financeAddress significant unmet need in patients with rare cancers allowing for the initial developmentutilization of a limited number of RNAi drug candidates inrare disease pathways and the areas of neurology, metabolic diseasepotential for expedited approvals with the FDA and oncology,comparable foreign agencies.

·Evaluate the potential for collaboration and license agreements with our own capital resourcesother biotechnology and any financial resources that we may obtain from capital markets and partners.
• We intend to seek partnerships with large pharmaceutical and biotechnology companies to leveragedevelop our intellectual propertycurrent and expand our development pipeline.other future product candidates.

Cancer Immunotherapy Market Overview

According to the 2018 “Global Oncology Trends” report by the IQVIA Institute, the global market for cancer drugs (including immunotherapy drugs) is expected to reach $200 billion by the end of 2022, growing at a compound annual growth rate, or CAGR, of 10-13% between 2017 and 2022. According to a 2018 report by Data Bridge Market Research (Pune, India), MarketsandMarkets, the global cancer immunotherapy market is expected to reach $202.89 billion by 2025, growing at a CAGR of 14.1% during the forecast period of 2018 to 2025. We expect that the first category of FDA-approved immunotherapies, immune synapse modulators (which includes checkpoint inhibitors and immune synapse co-stimulators), is likely to reach and exceed 90% of the immunotherapy market in the coming years, leaving approximately 10% for the other three major categories, which include peptide cancer active immunizers such as our product candidates, including GPS, NPS and the earlier stage peptide immunizers in our pipeline.

• We intend to maintain and continue to develop and enhance our RNAi technology platform by expanding our intellectual property position in RNAi compound chemistry, delivery and target sequences through in-licensing in combination with internal and collaborative research and development programs.
• We intend to develop future RNAi technology improvements and believe we are well positioned to do so, as our management and advisors have developed much of the core technology in the field of oligonucleotide therapeutics, and more specifically RNAi. Our advisors and scientists routinely meet to discuss novel approaches and improvements in our RNAi technology platforms to enhance our intellectual property portfolio.
• We may also seek to collaborate with government and charitable institutions through grants and funded research for our development programs.2


2


GPS targets malignancies and tumors characterized by an overexpression of the WT1 protein. The WT1 protein is one of the most widely expressed cancer proteins in multiple malignancies. A 2009 pilot project regarding the prioritization of cancer antigens conducted by the National Cancer Institute, or NCI, a division of the National Institutes of Health, or NIH, ranked the WT1 protein as a top priority for immunotherapy. WT1 is a protein that resides in the cell’s nucleus and participates in the process of cancer formation and progression. As such, it is classified as an “oncogene.” WT1 plays a key role in the development of the kidneys in fetal life, but then almost disappears from normal organs and tissues. In a wide variety of cancers (20 or more cancer types), WT1 becomes detectable again in the cells of these cancers. WT1 appears in large amounts (i.e., becomes “overexpressed”) in numerous hematological malignancies, including AML, MM and CML, as well as in many solid tumors such as MPM, gastrointestinal cancers (such as colorectal cancer), glioblastoma multiforme, TNBC, ovarian cancer and small-cell lung cancer. Overall, WT1 is expressed in at least 50% of tumor pathology specimens in 20 or more cancer types.

Risks RelatedAssociated with Our Business

Our business is subject to RXi

We face a number of risks and uncertainties relating to our business.of which you should be aware before making an investment decision. These risks and uncertainties include:
are discussed more fully in the “Risk Factors” section of this prospectus immediately following this prospectus summary. These risks include the following:

·We have incurred substantial losses since our inception and anticipate that we will continue to incur substantial and increasing losses for the foreseeable future.
• ·We will require substantial additional financing to achieve our goals, and a failure to obtain this necessary capital when needed could force us to delay, limit, reduce or terminate our product development or commercialization efforts.
·We currently have no source of revenues. We may never generate revenues or achieve profitability.
·We expect to continue to incur significant operating and non-operating expenses, which may make it difficult for us to secure sufficient financing and may lead to uncertainty about our ability to continue as a going concern.
·We have announced that we are considering strategic alternatives in order to maximize stockholder value. We may not be able to obtain sufficient fundingidentify or consummate a suitable transaction as a result of this review.

·We have been involved in multiple legal and governmental proceedings, and may notin the future be ableinvolved in proceedings, relating to develop our product candidates;
• The approach we are taking to discover and develop novel therapeutics using RNAi is unproven and may never lead to marketable products;
• We may not be able to maintain the third-party relationships that are necessary to develop or potentially commercialize some or allcommercial activities of our product candidates;predecessor that could adversely affect our financial condition and our business.
• We currently have no compounds in pre-clinical toxicology studies, and we may not be able to advance any product candidate through the pre-clinical stage into clinical trials;
• If our pre-clinical testing does not produce successful results or our clinical trials do not demonstrate safety and efficacy in humans, our products may not receive approval by the FDA or similar foreign governmental agencies and we will not be able to commercialize our product candidates;
• Even if we receive regulatory approval to market our product candidates, our product candidates may not be accepted commercially, which may prevent us from becoming profitable; and
• ·We are dependent on technologies we license, and if we lose the right to license such technologies or we fail to license new technologies in the future, our ability to develop new products would be harmed, and if we fail to meet our obligations under our license agreements, we may lose the ability to develop our product candidates.
·We are currently a clinical-stage biopharmaceutical company with product candidates in clinical development. If we are unable to successfully develop and commercialize product candidates or experiences significant delays in doing so, our business may be materially harmed.
·Our future success is dependent on the regulatory approval of our product candidates.

Additional Information

For additional information related to our business and operations, please refer to the reports incorporated herein by reference, including our Annual Report on Form 10-K for the year ended December 31, 2018 as filed with the SEC on March 22, 2019, as amended on April 30, 2019 or the 2018 Form 10-K, our Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2019 as filed with the SEC on May 15, 2019, or the 2019 Form 10-Q, and our Current Reports on Form 8-K as filed with the SEC, as described in the section entitled “Incorporation of Documents by Reference” beginning on page 63 of this prospectus.

Our Corporate Information

We were incorporated on April 3, 2006 in Delaware as Argonaut Pharmaceuticals, Inc. in Delaware on April 3,On November 28, 2006, and we changed our name to RXi Pharmaceuticals Corporation and began operations in January 2007. On September 26, 2011, we changed our name to Galena Biopharma, Inc. In December, 2017, we completed the business combination with the privately held Bermuda exempted company, Sellas Life Sciences Group Ltd., or Private SELLAS, which we refer to throughout the registration statement of which this prospectus forms as part of the “Merger.” As a result of the Merger, our business is now substantially comprised of the business of Private SELLAS. Upon completion of the Merger, we changed our name from “Galena Biopharma, Inc.” to “SELLAS Life Sciences Group, Inc.,” our common stock began trading on November 28, 2006. The Nasdaq Capital Market under a new ticker symbol “SLS” on January 2, 2018 and our financial statements became those of Private SELLAS.

Our principal executive office isoffices are located at 60 Prescott15 West 38th Street, Worcester, Massachusetts 0160510th Floor, New York, NY 10018, and our telephonephone number is(508) 767-3861. (917) 438-4353. Our Internetwebsite address is www.rxipharma.com. Our website and thewww.sellaslife.com. The information contained on, or that site, or connected to that site,can be accessed through, our website is not a part of or incorporated by reference into this prospectus.

The Offering
We have agreed to register 1,103,299 shares owned by the Selling Stockholders for resale pursuant toincluded our website address in this prospectus which comprise all of our shares owned by the Selling Stockholders.solely as an inactive textual reference.

3

The Offering

Common stock offered by us47,619,048shares (54,761,905 shares if the underwriters exercise their over-allotment option in full), assuming the sale of our shares of common stock at an assumed public offering price of $0.42 per share, which is the last reported sale price of our common stock on Nasdaq on June 11, 2019, and no sale of any pre-funded warrants.  
   
Issuer
RXi Pharmaceuticals Corporation, a Delaware corporation
Shares Offered
1,103,299 shares
Shares Outstanding
13,757,731 shares
Use of Proceeds
Pre-funded warrants offered by us
 We will not receive any proceeds from the resaleare also offering to each purchaser whose purchase of shares of common stock byin this offering would otherwise result in the Selling Stockholders
NASDAQ Capital Market Symbol
RXII
Risk Factors
You should carefully considerpurchaser, together with its affiliates and certain related parties, beneficially owning more than 4.99% of our outstanding common stock immediately following the matters discussed underconsummation of this offering, the heading “Risk Factors”
Where You Can Find More Information
If you haveopportunity to purchase, if the purchaser so chooses, pre-funded warrants, in lieu of shares of common stock. Each pre-funded warrant will be exercisable for one share of our common stock. The purchase price of each pre-funded warrant will equal the price per share at which the shares of common stock are being sold to the public in this offering, minus $0.01, and the exercise price of each pre-funded warrant will be $0.01 per share. This offering also relates to the shares of common stock issuable upon exercise of any questions relating topre-funded warrants sold in this prospectus, you should contact:offering. 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.
  Stephen J. DiPalma
Common warrants offered by usWe are also offering common warrants to purchase up to an aggregate of 47,619,048 shares of our common stock (or common warrants to purchase 54,761,905 shares of our common stock if the underwriters exercise their over-allotment option in full). Each share of our common stock and each pre-funded warrant is being sold together with a common warrant to purchase one share of our common stock. Each common warrant will have an exercise price of $         per share (representing 110% of the public offering price), will be immediately exercisable and will expire on the fifth anniversary of the original issuance date. This prospectus also relates to the offering of the shares of common stock issuable upon exercise of the common warrants.
  RXi Pharmaceuticals Corporation
Option to purchase additional securitiesThe underwriter has a 45-day option to purchase up to an additional 7,142,857 shares of common stock and/or common warrants to purchase up to an additional 7,142,857 shares of our common stock from us at the public offering price, less underwriting discounts and commissions.
  60 Prescott Street
Common stock to be outstanding after this offering72,795,523shares (assuming the sale of $20,000,000of our shares of common stock at an assumed public offering price of $0.42 per share, which is the last reported sale price of our common stock on Nasdaq on June 11, 2019, no sale of any pre-funded warrants, no exercise of any of the common warrants issued in this offering, and no exercise of the underwriters’ over-allotment option).
  Worcester, Massachusetts 01605
Use of Proceeds

We estimate the net proceeds to us from this offering, after deducting underwriting discounts and commissions and estimated offering expenses payable by us, will be approximately $18.1 million, assuming a combined public offering price of $0.42 per share and accompanying common warrant, which is the last reported sale price of our common stock on Nasdaq on June11, 2019. The actual offering price for the offered securities will be as determined between us and the underwriters at the time of pricing, and may be at a discount to the current market price. We intend to use the net proceeds from this offering to commence a Phase 3 study for GPS monotherapy in AML CRem2 patients and to continue our Phase 1/2 basket type study of GPS in combination with pembrolizumab, and for general corporate purposes.   See the section entitled “Use of Proceeds” beginning on page 46 of this prospectus.

  Phone: (508) 767-3861
Risk FactorsAn investment in our securities involves a high degree of risk. See the section entitled “Risk Factors” beginning on page 7 of this prospectus and the similarly entitled sections in the documents incorporated by reference into this prospectus.
  Fax: (508) 767-3862

Nasdaq Capital Market symbol

“SLS.” We do not intend to list the pre-funded warrants or the common warrants on any securities exchange or nationally recognized trading system.


3


Upon completion of this offering, we intend to take such steps as are necessary to reduce the exercise price of all of the warrants that were issued on July 16, 2018 and that remain outstanding, to the public offering priceper share of common stock and accompanying common warrant.

Outstanding Shares

Except as otherwise indicated herein, the number of shares of our common stock to be outstanding after this offering is based on 24,176,475 shares of common stock outstanding as of March 31, 2019 and excludes:

·17,698,061 shares of common stock issuable as of the date hereof upon the exercise of common stock warrants outstanding as of March 31, 2019 at a weighted average exercise price of $5.31 per share (including an aggregate of 1,000,000 shares of common stock issued between April 1, 2019 and May 31, 2019 upon the exercise of warrants pursuant to that certain warrant exercise agreement dated March 6, 2019) and 1,000,000 additional shares of common stock issuable as of the date hereof upon exercise of warrants issued subsequent to March 31, 2019, which have an exercise price of $1.40 per share;

·1,334,321 shares of common stock issuable upon the exercise of stock options outstanding as of March 31, 2019 at a weighted-average exercise price of $11.94 per share;

·12,758 shares of common stock issuable upon settlement of outstanding restricted stock unit, or RSU, awards as of March 31, 2019;

·362,208 shares of common stock available for future issuance under the 2017 Equity Incentive Plan, or the 2017 Plan, as of March 31, 2019;

·265,131 shares of common stock available for future issuance under the Employee Stock Purchase Plan, or the ESPP, as of March 31, 2019; and

·

The exercise by the underwriters of their over-allotment option to purchase additional shares of common stock and/or common warrants.

4

Summary HistoricalCondensed Consolidated Financial Information

Data

The following table sets forth our summary condensed consolidated financial data for the periods indicated. We derived the following condensed consolidated statements of operations data for the years ended December 31, 2018 and 2017 from our audited consolidated financial statements and the related notes appearing in the 2018 Form 10-K, which is incorporated by reference into this prospectus. We derived the following condensed consolidated statements of operations data for the three months ended March 31, 2019 and 2018 and the following condensed consolidated balance sheet data as of March 31, 2019 from our unaudited interim condensed consolidated financial statements and the related notes appearing in the 2019 Form 10-Q, which is incorporated by reference into this prospectus. The unaudited interim condensed consolidated financial statements have been prepared on a basis consistent with our audited consolidated financial statements incorporated by reference in this prospectus and include, in our opinion, all adjustments, consisting only of normal recurring adjustments, necessary for the fair presentation of the financial information in those statements.

The following summary historical financial informationdata should be read together with our consolidated financial statements and related notes appearing in conjunction with “Management’sthe 2018 Form 10-K and in the 2019 Form 10-Q, as well as in the sections entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the financial statements and corresponding notes to financial statements included elsewhereOperations in this prospectus.

RXi was incorporated as Argonaut Pharmaceuticals, Inc., in Delaware, on April 3, 2006 by CytRx and our four scientific founders, and we changed our name to RXi Pharmaceuticals Corporation, (a development stage company) on November 28, 2006. From April 3, 2006 (date of incorporation) until January 8, 2007, no activities were conducted at the RXi level. On March 11, 2008, CytRx distributed approximately 36% of our common stock to its shareholders of record as of March 6, 2008, and awarded approximately 27,700 shares of our common stock to certain of its directors, officers and other employees. CytRx currently owns approximately 46% of our common stock.
The financial statements of RXi included in this prospectus for the periods through December 31, 2006 have been disaggregated, or “carved-out,”each of the financial statements2018 Form 10-K and in our 2019 Form 10-Q, each of CytRx, as our “predecessor,” which wereare incorporated by reference into this prospectus. Our audited by BDO Seidman, LLP, an independent registered public accounting firm. These carved-out financial statements form what we refer to herein as the financial statements of the predecessor, and include both direct and indirect expenses. The historical direct expenses consist primarily of the various costs for technology license agreements, sponsored research agreements and fees paid to scientific advisors. Indirect expenses represent expenses incurred by CytRx on behalf of RXi that have been allocated to RXi. The indirect expenses are based upon (1) estimates of the percentage of time spent by individual CytRx employees working on RXi matters by year and (2) allocations of various expenses associated with each employee including salary, benefits, rent associated with an employee’s office space, accounting and other general and administrative expenses. The percentage of time spent by individual CytRx employees was then multiplied by the allocation of various expenses associated with those employees to develop an allocation of expense per employee and the sum of such allocations for these employees equals the total expense allocation for each period through December 31, 2007.
RXi’s financial information as of December 31, 2006 and December 31, 2007 and March 31, 2008, and for the periods ended December 31, 2007, as of March 31, 2008 and March 31, 2007 and 2008 are referred to in this prospectus as the financial information of the successor, and include expenses incurred by RXi in its RNAi therapeutic programs, as well as an allocation of indirect expenses provided by CytRx for each period through December 31, 2007. In addition, the net intercompany activities between the predecessor and CytRx have been accumulated into a single caption entitled “Parent company’s net deficit.”
The periods ended December 31, 2006, 2005 and 2004 as well as the cumulative financial information for the period from January 1, 2003 (date of inception) through December 31, 2006 for our predecessor and the financial information of the successor as of December 31, 2006 and for the period from April 3, 2006 (date of incorporation) to December 31, 2007 have been audited by our independent registered public accounting firm, BDO Seidman, LLP, which also previously audited CytRx’s consolidated financial statements have been prepared in U.S. dollars in accordance with U.S. generally accepted accounting principles. Our historical results are not necessarily indicative of results that may be achieved in any future period and the results for the three months ended March 31, 2019 are not necessarily indicative of operating results that may be expected for the full year.

  Year Ended 
December 31,
  Three Months Ended
March 31,
 
  2018  2017  2019  2018 
  (in thousands) 
          (unaudited) 
Statement of Operations Data:                
Operating expenses:                
Research and development $8,767  $6,067  $1,859  $1,804 
General and administrative  12,772   15,089   2,500   3,880 
In-process research and development impairment charge  9,550          
Severance costs     1,883       
Total operating expenses and loss from operations  (31,089)  (23,039)  (4,359)  (5,684)
Change in fair value of warrant liability  5,300      195   1,881 
Change in fair value of the contingent consideration  (3,032)     (387)  (3,411)
Loss on settlement of liability-classified warrants  (727)        (685)
Gain on extinguishment of debt  766          
Interest expense, net  (266)  (462)  14   (96)
Income tax (benefit) expense  (1,378)  253       
Net loss  (27,670)  (23,754)  (4,537)  (7,995)
Deemed dividend on conversion of 2015 Sely Note     (675)      
Deemed dividend arising from the issuance of common stock to Series A convertible preferred stockholders under most favored nation provision  (8,654)            
Deemed dividend arising from beneficial conversion feature of convertible preferred stock  (4,436)        (1,968)
Impact of anti-dilution protection on liability-classified warrants  (491)      (439)    
Net loss attributable to common stock stockholders $(41,251) $(24,429) $(4,976) $(9,963)
Basic and diluted loss per share to common stock stockholders $(3.15) $(10.44) $(0.22) $(1.67)

5

  As of March 31, 2019    

(in thousands)

Unaudited

 Actual  Pro forma(1)  Pro forma
as adjusted(2)
 
Balance Sheet Data:    
Cash and cash equivalents $2,576  $3,621  $21,741 
Restricted cash and cash equivalents  114   114   114 
Working capital (deficit)  (2,388)  (1,343)  16,777 
Total assets  14,927   15,972   34,092 
Total liabilities  11,977   11,977   11,977 
Accumulated deficit  (86,392)  (86,392)  (86,392)
Total stockholders' equity  2,950   3,995   22,115 

(1)The pro forma amounts give effect of the exercise of 1,000,000 warrants between April 1, 2019 and May 31, 2019 to purchase shares of common stock at an exercise price of $1.10 per share, resulting in net cash proceeds received of approximately $1.0 million after deducting commissions and offering expenses.

(2)

Pro forma as adjusted amounts reflect the pro forma adjustment described in footnote (1) as well as the sale of47,619,048 shares of our common stock and accompanying common warrants in this offering at an assumed public offering price of $0.42 per share, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us, and assuming no pre-funded warrants are issued.

6

RISK FACTORS

Risks Relating to Our Financial Position and Capital Needs

We have incurred substantial losses since our inception and anticipate that we will continue to incur substantial and increasing losses for the foreseeable future.

We are a clinical stage biopharmaceutical company focused on development of novel cancer immunotherapies for a broad range of cancer indications. Investment in biopharmaceutical product development is highly speculative because it entails substantial upfront capital expenditures and significant risk that a product candidate will fail to prove effective, gain regulatory approval or become commercially viable. We do not have any products approved by regulatory authorities and have not generated any revenues from collaboration and licensing agreements or product sales to date, and have incurred significant research, development and other expenses related to our ongoing operations and expect to continue to incur such expenses. As a result, we have not been profitable and have incurred significant operating losses in every reporting period since our inception. For the three months ended March 31, 2019 and the years ended December 31, 2007, 2006, 20052018 and 2004.2017, we reported a net loss of $4.5 million, $27.7 million and $23.8 million respectively. As of March 31, 2019 and December 31, 2018, we had an accumulated deficit of $86.4 million and $81.9 million respectively.

We do not expect to generate revenues for many years, if at all. We expect to continue to incur significant expenses and operating losses for the foreseeable future. We anticipate these losses to increase as we continue to research, develop and seek regulatory approvals for our product candidates and any additional product candidates we may acquire, and potentially begin to commercialize product candidates that may achieve regulatory approval. We may also encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may adversely affect our business. The information presentedsize of our future net losses will depend, in part, on the rate of future growth of our expenses and our ability to generate revenues. Our expenses will further increase as we:

conduct additional clinical trials of our lead product, GPS, including the Phase 3 clinical trials evaluating GPS for AML and other cancers;

continue to develop immunotherapy programs for NPS;

pursue research and development of our other product candidates, including GALE-301 (a vaccine against the E39 peptide derived from the folate binding protein, or FBP) and GALE-302 (a vaccine against the J65 peptide derived from FBP);

in-license or acquire the rights to, and pursue development of, other products, product candidates or technologies;

hire additional clinical, manufacturing, quality control, quality assurance and scientific personnel;

seek marketing approval for any product candidates that successfully complete clinical trials;

develop our outsourced manufacturing and commercial activities and establish sales, marketing and distribution capabilities, if we receive, or expect to receive, marketing approval for any product candidates;

maintain, expand and protect our intellectual property portfolio; and

add operational, financial and management information systems and personnel.

We need significant additional financing to fund our operations and complete the development and, if approved, the commercialization of our product candidates. If we are unable to raise capital when needed, we could be forced to delay, reduce or eliminate our product development programs or commercialization efforts.

We expect our existing cash as of March 31, 2019 and the proceeds received in May 2019 upon the exercise of common stock warrants will enable us to fund our operating expenses through the first half of 2019. Our existing cash will not be sufficient to complete development and obtain regulatory approval for any of our lead product candidates, and we will need to raise significant additional capital to help us do so. In addition, our operating plan may change as a result of many factors currently unknown to us, and we may need additional funds sooner than planned.

7

We expect to expend substantial resources for the three-month periods ended March 31, 2008foreseeable future to continue the clinical development and 2007manufacturing of our product candidates and the advancement and expansion of our preclinical research pipeline, in particular the Phase 1/2 basket study of GPS in combination with pembrolizumab and our planned Phase 3 study of GPS in AML. These expenditures will include costs associated with research and development, potentially acquiring new product candidates or technologies, conducting preclinical studies and clinical trials and potentially obtaining regulatory approvals and manufacturing products, as well as marketing and selling products approved for sale, if any.

Our future capital requirements depend on many factors, including:

the cumulative financial informationscope, progress, results and costs of our ongoing and planned development programs for the period from January 1, 2003 (date of inception) through March 31, 2008 is unaudited and has been prepared on the same basis as the audited financial statements and includes all adjustments, consisting of only normal recurring adjustments, necessary for the fair presentation of this information in all material respects. The results of any interim period are not necessarily indicative of the results of operations to be expected for a full fiscal year.
In 2003, CytRx entered into several technology license agreements with UMMS related to RNAi technologies. CytRx subsequently entered into other RNAi-related technology agreements with UMMS and other parties,our product candidates, as well as four sponsored research agreements pursuantany additional clinical trials we undertake to which CytRx funded RNAi research activities. Threeobtain data sufficient to seek marketing approval for our product candidates in any indication;

the timing of, and the costs involved in, obtaining regulatory approvals for our product candidates if our clinical trials are successful;

the cost of commercialization activities for our product candidates, if any of these sponsored research agreements were with UMMSproduct candidates are approved for sale, including marketing, sales and onedistribution costs;

the cost of the sponsored research agreements was with Massachusetts General Hospital. On January 8, 2007, RXi entered into a contribution agreement with CytRx under which CytRx assigned and contributed to RXi substantially all of itsRNAi-related technologies and assets, and we commenced operations in January 2007.


4


Management believes the assumptions underlying the carve-out financial information are reasonable; however, RXi’s financial position, results of operations and cash flows may have been materially different if it was operated as a stand-alone entity as of andmanufacturing our product candidates for the periods presented.
We generated no revenues during the years ended December 31, 2007, 2006, 2005 or 2004 or for the three-month periods ended March 31, 2008 and 2007. We also anticipate that no revenue will be generated for the year ending December 31, 2008. Accordingly, for accounting purposes we are considered a development stage company.
RXi PHARMACEUTICALS CORPORATION
(A Development Stage Company)
FIVE YEAR FINANCIAL SUMMARY
                             
  Period from
                   
  January 1,
  For the
  For the
             
  2003 (Date of
  Three
  Three
  For the
  For the
  For the
  For the
 
  Inception)
  Months
  Months
  Year
  Year
  Year
  Year
 
  through
  Ended
  Ended
  Ended
  Ended
  Ended
  Ended
 
  March 31,
  March 31,
  March 31,
  December 31,
  December 31,
  December 31,
  December 31,
 
  2008  2008  2007  2007  2006  2005  2004 
  (Successor)  (Successor)  (Successor)  (Successor)  (Predecessor)  (Predecessor)  (Predecessor) 
  (In thousands, except share and per share amounts) 
 
Statement Expenses Data:
                            
Expenses:                            
Research and development $16,376  $1,088  $824  $6,747  $1,772  $2,080  $2,814 
General and administrative  7,816   1,625   588   4,666   633   129   458 
                             
Operating loss  (24,192)  (2,713)  (1,412)  (11,413)  (2,405)  (2,209)  (3,272)
Interest income  523   75      448          
Other expense  (8)  (8)               
                             
Loss before income taxes  (23,677)  (2,646)  (1,412)  (10,965)  (2,405)  (2,209)  (3,272)
Income taxes           (25)         
                             
Net loss $(23,677) $(2,646) $(1,412) $(10,990) $(2,405) $(2,209) $(3,272)
                             
Basic and diluted net loss per share  N/A  $(0.21) $(0.17) $(0.99)  N/A   N/A   N/A 
                             
Weighted average shares outstanding, basic and diluted  N/A   12,684,432   8,117,016   11,113,137   N/A   N/A   N/A 
                             
                         
  As of
  As of
  As of
  As of
  As of
  As of
 
  March 31,
  December 31,
  December 31,
  December 31,
  December 31,
  December 31,
 
  2008  2007  2006  2006  2005  2004 
  (Successor)  (Successor)  (Successor)  (Predecessor)  (Predecessor)  (Predecessor) 
 
Balance Sheet Data:
                        
Cash and cash equivalents $9,857  $1,763  $2  $  $  $ 
Short term investments     9,952             
Total current assets  10,179   11,737   2          
Working capital  8,405   10,413   2   (318)  (500)  (968)
Total assets  10,580   12,147   2   57   50    
Due to parent  (67)  (207)            
Total stockholders’ equity  8,806   10,823   2          
Parent company’s net deficit           (268)  (450)  (968)


5


RISK FACTORS
You should carefully consider the following risk factors and all the other information contained in this prospectus in evaluating us and our common stock. If any of the following risks and uncertainties develop into actual events, they could have a material adverse effect on our business, financial condition or results of operations. In that case, the trading price of our common stock also could be adversely affected.
Risks Relating to RXi’s Business and Industry
The approach we are taking to discover and develop novel therapeutics using RNAi is unproven and may never lead to marketable products.
The scientific discoveries that form the basis for our efforts to discover and develop new drugs are relatively new. The RNAi technologies that we have licensed and that we intend to develop have not yet been clinically tested by us, nor are we aware of any clinical trials in preparation for efficacy having been completed by third parties involving these technologies. To date, neither we nor any other company has received regulatory approval, including the cost and timing of process development, manufacturing scale-up and validation activities;

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

the costs to in-license future product candidates or technologies;

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

the costs in defending and resolving future derivative and securities class action litigation;

our operating expenses; and

the emergence of competing technologies or other adverse market therapeutics utilizing RNAi. The scientific evidence to support the feasibility of developing drugs based on these discoveries is both preliminary and limited. Successful development of RNAi-based products by us will require solving a number of issues, including providing suitable methods of stabilizing the RNAi material and delivering it into target cells in the human body. We may spend large amounts of money trying to solve these issues and never succeed in doing so. In addition, any compounds that we developdevelopments.

Additional funds may not demonstrate in patients the chemical and pharmacological properties ascribedbe available when we need them on terms that are acceptable to them in laboratory studies, and they may interact with human biological systems in unforeseen, ineffectiveus, or even harmful ways.

Further, our exclusive focus on RNAi technology for developing products as opposed to multiple, more proven technologies for drug development increases the risk associated with our business.at all. We have no committed source of additional capital. If weadequate funds are not successful in developingavailable to us on a product candidate using RNAi technology,timely basis, we may not be able to identify and successfully implement an alternative product development strategy.
We will be subject to competition and may not be able to compete successfully.
A number of medical institutions and pharmaceutical companies are seeking to develop therapeutic products based on RNA interference technologies. Companies working in this area include Alnylam Pharmaceuticals, Nastech Pharmaceutical Company Inc., Cequent Pharmaceuticals Inc., Nucleonics, Inc., Tacere Therapeutics Inc., Benitec Ltd., Opko Corp., Silence Therapeutics plc (formerly SR Pharma plc), Quark Pharmaceuticals, Inc., Rosetta Genomics Ltd., Calando Pharmaceuticals, Inc., and Isis Pharmaceuticals, Inc, as wellcontinue as a number of the multinational pharmaceutical companies. In addition, a number of companies are developing therapeutics for the same diseases we are targeting using technologies other than RNA interference, and we are aware of some usage of an existing drug in a manner not described in its approved label for the potential treatment of ALS. Most of these competitors have substantially greater research and development capabilities and financial, scientific, technical, manufacturing, marketing, distribution, and other resources than us, andgoing concern or we may not be ablerequired to successfully compete with them. In addition, even if we are successful in developingdelay, limit, reduce or terminate preclinical studies, clinical trials or other development activities for one or more of our product candidates or target indications, or delay, limit, reduce or terminate our establishment of sales and marketing capabilities or other activities that may be necessary to commercialize our product candidates.

We have announced that we are considering strategic alternatives in order to compete successfully we may need to be first to marketmaximize stockholder value, including financings, strategic alliances, acquisitions or to demonstrate that our RNAi based products are superior to therapies based on different technologies. If we are not first to market or are unable to demonstrate such superiority, any products for which we are able to obtain approval may not be successful. For example, Isis Pharmaceuticals, Inc. has begun pre-clinical toxicology studies for an antisense-based therapeutic product candidate, for which the FDA has granted orphan drug status, that targets the same gene for ALS that we intend to target. If Isis is able to successfully bring this treatment to market before we are able to complete the development of an RNAi therapeutic in this area, even if our development efforts are successful, we may not receive any market advantages that we would have benefited from if ours were the first such therapeutic product available on the market. Furthermore, under U.S. law, if a competitor has orphan drug status for a product and if our product candidate is determined to be contained within the competitor’s product for the same indication or disease, then that competitor would have market exclusivity and approval of our product for that indication or disease could potentially be blocked for seven years. Note that Isis’ product candidate for ALS should not present this challenge to any of our potential


6


ALS treatments, since its product is antisense-based, which is a separate and distinct technology from RNAi. However, if a competitor were to develop a RNAi-based product that was granted orphan drug status for onepossible sale of the indications or diseases we plan to target, then the approval of any RNAi-based product candidate that we were developing for that same indication or disease may be delayed for seven years.
company. We may not be able to maintainidentify or consummate any suitable strategic alternatives.

We have announced that we are considering all strategic alternatives that may be available to us to maximize stockholder value, including financings, strategic alliances, acquisitions or the third party relationshipspossible sale of the company. We currently have no agreements or commitments to engage in any specific strategic transactions, and our exploration of various strategic alternatives may not result in any specific action or transaction. To the extent that this engagement results in a transaction, our business objectives may change depending upon the nature of the transaction. There can be no assurance that we will enter into any transaction as a result of the engagement.

8

Furthermore, if we determine to engage in a strategic transaction, we cannot predict the impact that such strategic transaction might have on our operations or stock price. We also cannot predict the impact on our stock price if we fail to enter into a transaction.

Raising additional capital may cause dilution to our existing stockholders, restrict our operations or require us to relinquish rights to our product candidates on unfavorable terms to us.

We may seek additional capital through a variety of means, including through private and public equity offerings and debt financings, collaborations, strategic alliances and marketing, distribution or licensing arrangements. To the extent that we raise additional capital (including this offering) through the sale of equity or convertible debt securities, or through the issuance of shares under management or other types of contracts, or upon the exercise or conversion of outstanding derivative securities, the ownership interests of our stockholders will be diluted, and the terms of such financings may include liquidation or other preferences, anti-dilution rights, conversion and exercise price adjustments and other provisions that adversely affect the rights of our stockholders, including rights, preferences and privileges that are necessarysenior to those of our holders of common stock in the event of a liquidation. For example, in March and May 2018, we issued convertible preferred stock which contained rights, preferences and privileges which were senior to those of holders of our common stock. Such preferred stock is no longer outstanding. In such event, there is a possibility that once all senior claims are settled, there may be no assets remaining to pay out to the holders of our common stock. Debt financing, if available, could include covenants limiting or restricting our ability to take certain actions, such as incurring additional debt, making capital expenditures, entering into licensing arrangements, or declaring dividends and may require us to grant security interests in our assets, including our intellectual property, and for our subsidiaries to guarantee our obligations. If we raise additional funds through collaborations, strategic alliances, or marketing, distribution or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, products or product candidates or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to grant rights to develop and market products or potentially commercialize some or allproduct candidates that we would otherwise prefer to develop and market ourselves.

There is substantial doubt about our ability to continue as a going concern.

As of our product candidates.

March 31, 2019, we had a cash and cash equivalents balance of approximately $2.6 million. In addition, we had outstanding accounts payable and accrued expenses of $5.4 million. We expect our existing cash as of March 31, 2019 and the proceeds received in May 2019 upon the exercise of common stock warrants will enable us to depend on collaborators, partners, licensees, clinical research organizationsfund our operating expenses and other third partiescapital expenditure requirements through the first half of 2019. In the event that we are unable to support our discovery efforts,obtain additional financing, we may be unable to formulate product candidates, and to conduct clinical trials for some or all of our product candidates. We cannotcontinue as a going concern. There is no guarantee that we will be able to successfully negotiate agreements forsecure additional financing, including in connection with this offering. Changes in our operating plans, our existing and anticipated working capital needs, defense costs related to our ongoing legal proceedings and any additional legal proceedings we might become subject to in the future, the acceleration or maintain relationships with collaborators, partners, licensees, clinical investigators and other third parties on favorable terms, if at all. If we are unable to obtain or maintain these agreements, we may not be able to clinically develop, formulate, obtain regulatory approvals for or commercialize our product candidates. Under certain license agreements that we have already entered into, we have minimum dollar amounts per calendar year that we are obligated to spend on the development of the technology we have licensed from our contract partners. If we fail to meet this requirement under anymodification of our licenses, wedevelopment activities, any near-term or future expansion plans, increased expenses, potential acquisitions or other events may be in breach of our obligations under such agreement which may result in the loss of the technology licensed. We cannot necessarily control the amount or timing of resources that our contract partners will devote to our research and development programs, product candidates or potential product candidates, and we cannot guarantee that these parties will fulfill their obligations to us under these arrangements in a timely fashion.
We will rely upon third parties for the manufacture of our clinical product candidates.
We do not have the facilities or expertise to manufacture supplies of any of our potential product candidates. Accordingly, we will be dependent upon contract manufacturers for these supplies. We have no manufacturing supply arrangements for any of our product candidates, and there can be no assurance that we will be able to secure needed supply arrangements on attractive terms, or at all. Our failure to secure these arrangements as needed could have a materially adverse effect onfurther affect our ability to completecontinue as a going concern. See Note 2 to our consolidated financial statements included elsewhere in the development2018 Form 10-K for additional information on our assessment as of December 31, 2018. Similarly, the report of our independent registered public accounting firm on our consolidated financial statements as of and for the year ended December 31, 2018 includes an explanatory paragraph indicating that there is substantial doubt about our ability to continue as a going concern. Our consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty. If we cannot continue as a viable entity, our securityholders may lose some or all of their investment in us.

We currently have no source of revenues. We may never generate revenues or achieve profitability.

Currently, we do not generate any revenues from product candidatessales or otherwise. Even if we obtainare able to successfully achieve regulatory approval for our product candidates, we do not know when we will generate revenues or become profitable, if at all. Our ability to generate revenues from product sales and achieve profitability will depend on our ability to successfully commercialize them.

We have engaged specialty organic chemistry synthesis companiesproducts, including our current product candidates, and other product candidates that we may develop, in-license or acquire in the future. Our ability to manufacture nanotransportersgenerate revenues and achieve profitability also depends on a number of additional factors, including our ability to:  

successfully complete development activities, including the necessary clinical trials;

complete and submit either BLAs or NDAs to the FDA and obtain U.S. regulatory approval for indications for which we have an exclusive licensethere is a commercial market;

9

complete and submit applications to foreign regulatory authorities in Europe, Asia and other jurisdictions;

obtain regulatory approval in territories with viable market sizes;

obtain coverage and adequate reimbursement from UMMSthird parties, including government and private payors;

set commercially viable prices for deliveryour products, if any;

establish and maintain supply and manufacturing relationships with reliable third parties and/or build our own manufacturing facility and ensure adequate, legally globally compliant manufacturing of bulk drug substances and drug products to maintain that supply;

develop distribution processes for our product candidates;

develop commercial quantities of our product candidates. The synthesis methodscandidates, once approved, at acceptable cost levels; obtain additional funding, if required to develop and commercialize our product candidates;

develop a commercial organization capable of sales, marketing and distribution for nanotransporters are describedany products we intend to sell ourselves, in the patent applicationsmarkets in which we have licensedchoose to commercialize on our own;

achieve market acceptance of our products;

attract, hire and retain qualified personnel; and

protect our rights in our intellectual property portfolio.

Our revenues for any product candidate for which regulatory approval is obtained will be dependent, in part, upon the size of the markets in the territories for which it gains regulatory approval, the accepted price for the product, the ability to get reimbursement at any price, and whether we own the commercial rights for that territory. If the number of our addressable disease patients is not as significant as our estimates, the indication approved by regulatory authorities is narrower than we expect, or the reasonably accepted population for treatment is narrowed by competition, physician choice or treatment guidelines, we may not generate significant revenues from UMMS.sales of such products, even if approved. In addition, we anticipate incurring significant costs associated with commercializing any approved product candidate. As a result, even if we generate revenues, we may not become profitable and may need to obtain additional funding to continue operations. If we fail to become profitable or are unable to sustain profitability on a continuing basis, then we may be unable to continue our operations at planned levels and may be forced to reduce our operations.

The Tax Cuts and Jobs Act could adversely affect our business and financial condition.

H.R. 1, “An Act to provide for reconciliation pursuant to title II and V of the concurrent resolution on the budget for fiscal year 2018,” informally entitled the Tax Cuts and Jobs Act, or the Tax Act, enacted on December 22, 2017, among other things, contains significant changes to corporate taxation, including reduction of the corporate tax rate from a top marginal rate of 35% to a single rate of 21%, limitation of the tax deduction for interest expense to 30% of adjusted taxable income (except for certain small businesses), limitation of the deduction for net operating losses carried forward from taxable years beginning after December 31, 2017 to 80% of current year taxable income and elimination of net operating loss carrybacks, one time taxation of offshore earnings at reduced rates regardless of whether they are repatriated, elimination of U.S. tax on foreign earnings (subject to certain important exceptions), providing immediate deductions for certain new investments instead of deductions for depreciation expense over time, and modifying or repealing many business deductions and credits (including reduction of tax credits under the Orphan Drug Act). Notwithstanding the reduction in the corporate income tax rate, the overall impact of the Tax Act is uncertain and our business and financial condition could be adversely affected. In addition, it is uncertain if and to what extent various states will conform to the Tax Act.

Our ability to use net operating losses to offset future taxable income may be subject to limitations.

As of December 31, 2018, we had federal and state net operating loss carryforwards of approximately $19.7 million and $3.7 million, respectively. Our NOLs generated in tax years ending on or prior to December 31, 2017 are only permitted to be carried forward for 20 years under applicable U.S. tax laws, and will begin to expire, if not utilized, beginning in 2027. These NOL carryforwards could expire unused and be unavailable to offset future income tax liabilities. Under the Tax Act, federal NOLs incurred in tax years ending after December 31, 2017 may be carried forward indefinitely, but the deductibility of such federal NOLs is limited. It is anticipated that refinementuncertain if andscale-up to what extent various states will conform to the Tax Act, or whether any further regulatory changes may be adopted in the synthesis methods willfuture that could minimize its applicability. In addition, under Section 382 of the Internal Revenue Code of 1986, as amended, and certain corresponding provisions of state law, if a corporation undergoes an “ownership change,” which is generally defined as a greater than 50% change, by value, in the ownership of its equity over a three-year period, the corporation’s ability to use its pre-change NOL carryforwards and other pre-change tax attributes to offset its post-change income may be performed under contractlimited. The Merger constituted an ownership change and as such, our ability to use our NOL carryforwards is materially limited, which may harm our future operating results by effectively increasing our future tax obligations.

10

Risks Related to the Development and Regulatory Approval of Our Product Candidates

Clinical-stage biopharmaceutical companies with this manufacturer. However, as the nanotransportersproduct candidates in clinical development face a wide range of challenging activities which may entail substantial risk.

We are unique chemicals, the costs of synthesis are not currently known and there is potential for technical challengesa clinical-stage biopharmaceutical company with respect toscale-up.

Our current plans call for the manufactureproduct candidates in clinical development. The success of our RNAi compoundsproduct candidates will depend on several factors, including the following:

designing, conducting and successfully completing preclinical development activities, including preclinical efficacy and IND-enabling studies, for our product candidates or product candidates we are interested in in-licensing or acquiring, including product candidates;

designing, conducting and completing clinical trials for our product candidates with positive results;

receipt of regulatory approvals from applicable authorities;

obtaining and maintaining patent and trade secret protection and regulatory exclusivity for our product candidates;

making arrangements with third-party manufacturers, receiving regulatory approval of our manufacturing processes and our third-party manufacturers’ facilities from applicable regulatory authorities and ensuring adequate supply of drug product;

manufacturing our product candidates at an acceptable cost;

effectively launching commercial sales of our product candidates, if approved, whether alone or in collaboration with others;

achieving acceptance of our product candidates, if approved, by contract manufacturers offering research grade,patients, the medical community and third-party payors;

effectively competing with other therapies;

if our products candidates are approved, obtaining and maintaining coverage and adequate reimbursement by third-party payors, including government payors, for our product candidates;

complying with all applicable regulatory requirements, including FDA current Good LaboratoryClinical Practices, toxicology studies andor GCP, current Good Manufacturing Practices, grade RNAior cGMP, and standards, rules and regulations governing promotional and other marketing activities;

maintaining a continued acceptable safety profile of the products during development and following approval; and

maintaining and growing an organization of scientists and business people who can develop and commercialize our products and technology.

If we do not achieve one or more of these factors in a timely manner or at all, we could experience significant delays or an inability to successfully develop and commercialize our product candidates, which could materially harm our business.

Our lead product candidate, GPS, represents a new therapeutic approach that presents significant challenges.

Our future success is substantially dependent on the successful development of WT1 peptide immunotherapies in general and GPS in particular. Because this program represents a new approach to cancer immunotherapy for clinical use. The chemistry, manufacturingthe treatment of cancer and controlsother diseases, developing and commercializing GPS subjects us to a number of challenges, including:

11

obtaining regulatory approval from the FDA and other regulatory authorities, which have very limited experience with the development and commercialization of WT1 cancer immunotherapies;

obtaining the components required for RNAi active pharmaceutical ingredient will be addressed by our clinical development teamthe administration of GPS (i.e., GPS, granulocyte macrophage-colony stimulating factor, or GM-CSF, and Montanide) from three separate sources, the subsequent separate storage requirements for each of these components and the delivery of these components to the administration location;

utilizing GPS in close collaborationcombination with a contract manufacturer with extensive experience in RNA drug synthesis. RNA is a complex molecule requiring many synthesis steps,other therapies, which may leadincrease the risk of adverse side effects;

sourcing clinical and, if approved, commercial supplies for the materials used to challengesmanufacture and process GPS;

developing a manufacturing process used in connection with purificationGPS that will yield a satisfactory product that is safe, effective, scalable andscale-up. These challenges could result profitable;

establishing sales and marketing capabilities after obtaining any regulatory approval to gain market acceptance; and

obtaining coverage and adequate reimbursement from third-party payors and government authorities.

Moreover, public perception of safety issues, including adoption of new therapeutics or novel approaches to treatment, may adversely influence the willingness of subjects to participate in increasedclinical trials, or if approved, of physicians to subscribe to the novel treatment mechanics. Physicians, hospitals and third-party payors often are slow to adopt new products, technologies and treatment practices that require additional educational upfront costs and delays in manufacturing. Additionally, although we are not currently aware of any such litigation or threatened litigation or challenge, if we have litigation or threatened litigation for or challenge to the composition of our products candidates in the future, manufacturers may refuse to manufacture such compounds.

Any drug candidates we develop may fail in development or be delayed ortraining. Physicians may not be commercially viable.willing to undergo training to adopt this novel therapy, may decide the therapy is too complex to adopt without appropriate training and may choose not to administer the therapy. Based on these and other factors, hospitals and payors may decide that the benefits of this new therapy do not or will not outweigh their costs.

We may find it difficult to enroll patients in our clinical trials given the limited number of patients who have the diseases for which our product candidates are being studied which could delay or prevent the start of clinical trials for our product candidates.

All

Identifying and qualifying patients to participate in clinical trials of our productscurrent and future product candidates is essential to our success. The timing of our clinical trials depends in development mustpart on the rate at which we can recruit patients to participate in clinical trials of our product candidates, and we may experience delays in our clinical trials if we encounter difficulties in enrollment. If we experience delays in our clinical trials, the timeline for obtaining regulatory approval of our product candidates will most likely be delayed.

Many factors may affect our ability to identify, enroll and maintain qualified patients, including the following:

eligibility criteria of our ongoing and planned clinical trials with specific characteristics appropriate for inclusion in our clinical trials;

design of the clinical trial;

size and nature of the patient population;

patients’ perceptions as to risks and benefits of the product candidate under study and the participation in a clinical trial generally in relation to other available therapies, including any new drugs that may be approved for the indications we are investigating;

the availability and efficacy of competing therapies and clinical trials;

pendency of other trials underway in the same patient population;

willingness of physicians to participate in our planned clinical trials;

severity of the disease under investigation;

12

proximity of patients to clinical sites;

patients who do not complete the trials for personal reasons; and

issues with contract research organizations, or CROs, and/or with other vendors that handle our clinical trials.

For example, in our planned AML, Phase 3 clinical trial for GPS, only patients who meet specific inclusion criteria will enter the study. Primary entry restrictions include being greater than or equal to 60 years of age, having received upfront treatment with chemotherapy agents only, having achieved complete remission or CRem, as well as demonstrating adequate hematologic recovery. The estimated prevalence of AML is 12,000 to 20,000 cases in the United States (across all ages) and only a subset of this group satisfies the enrollment criteria for our AML Phase 3 clinical trial.

We may not be able to initiate or continue to support clinical trials of our product candidates for one or more indications, or any future product candidates if we are unable to locate and enroll a sufficient number of eligible participants in these trials as required by the FDA or similar foreign governmental agencies before they can be marketed. The process for obtaining FDA approvalother regulatory authorities. Even if we are able to enroll a sufficient number of patients in our clinical trials, if the pace of enrollment is both time-consuming and costly, with no certainty of a successful outcome. This process typically includes the conduct of extensive preclinical and clinical testing, which may take longer or cost moreslower than we anticipate,expect, the development costs for our product candidates may increase and the completion of our trials may prove


7

be delayed or our trials could become too expensive to complete.


If we experience delays in the completion of, or termination of, any clinical trials of our current or future product candidates, the commercial prospects of our product candidates could be harmed, and our ability to generate product revenue from any of these product candidates could be delayed or prevented. In addition, any delays in completing our clinical trials would likely increase our overall costs, impair product candidate development and jeopardize our ability to obtain regulatory approval relative to our current plans. Any of these occurrences may harm our business, financial condition, and prospects significantly.

unsuccessful due to numerous factors. Product

The results of preclinical studies or earlier clinical trials are not necessarily predictive of future results. Our existing product candidates in clinical trials, and any other product candidates that may appear to be promising at early stages of developmentadvance into clinical trials, may not successfully reachhave favorable results in later clinical trials or receive regulatory approval.

Success in preclinical studies and early clinical trials does not ensure that later clinical trials will generate adequate data to demonstrate the market for aefficacy and safety of an investigational drug. A number of reasons. The results of pre-clinical and initial clinical testing of these products may not necessarily indicate the results that will be obtained from later or more extensive testing. Companiescompanies in the pharmaceutical and biotechnology industries, including those with greater resources and experience than us, have suffered significant setbacks in advanced clinical trials, even after obtainingseeing promising results in earlier trials.

We, the FDApreclinical studies or other applicable regulatory authorities,clinical trials. Any of our product candidates that are in, or an institutional review board (“IRB”), an independent committee under the oversight of the U.S. Department of Health and Human Services (“HHS”), which has been formally registered with HHS and functionsmay advance to, approve, monitor and review biomedical and behavioral research involving humans, may suspend clinical trials may not succeed in clinical trials despite promising preclinical data. For example, with respect to GPS, a broadly similar anti-cancer peptide immunotherapeutic against melanoma-specific antigen being developed by GlaxoSmithKline for advanced unresectable melanoma initially produced positive efficacy data in a Phase 2 clinical study, but subsequently failed to prove more beneficial than placebo in a controlled, blinded and randomized Phase 3, registration-enabling clinical trial in the same indication in patients after tumor resection.

Despite the results reported in earlier preclinical studies or clinical trials for our product candidates, we do not know whether the clinical trials we may conduct will demonstrate adequate efficacy and safety to result in regulatory approval to market GPS or any of our product candidates for a drug candidate atparticular indication, either as a monotherapy or in combination, in any timeparticular jurisdiction. Efficacy data from prospectively designed trials may differ significantly from those obtained from retrospective subgroup analyses. If later-stage clinical trials do not produce favorable results, our ability to achieve regulatory approval for various reasons, includingGPS may be adversely impacted. Even if we believe that we have adequate data to support an application for regulatory approval to market any of our current or they believe the subjects or patients participating in such trials are being exposed to unacceptable health risks. Among other reasons, adverse side effects of a drug candidate on subjects or patients in a clinical trial could result infuture product candidates, the FDA or other regulatory authorities suspendingmay not agree and may require that we conduct additional clinical trials.

Clinical drug development involves a lengthy and expensive process with an uncertain outcome.

Clinical testing is expensive and can take many years to complete, with the outcome inherently uncertain. Failure can occur at any time during the clinical trial process. Before obtaining approval from regulatory authorities for the sale of any product candidate, we must conduct extensive clinical trials to demonstrate the safety and efficacy of our product candidates in humans. Prior to initiating clinical trials, a sponsor must complete extensive preclinical testing of a product candidate, including, in most cases, preclinical efficacy experiments as well IND-enabling toxicology studies. These experiments and studies may be time-consuming and expensive to complete. The necessary preclinical testing may not be completed successfully for a preclinical product candidate and a potentially promising product candidate may therefore never be tested in humans. Once it commences, clinical testing is expensive, difficult to design and implement, can take many years to complete and is uncertain as to outcome. A failure of one or terminatingmore clinical trials can occur at any stage of testing. The outcome of preclinical testing and early clinical trials may not be predictive of the success of later clinical trials, and interim results of a clinical trial do not necessarily predict final results. Moreover, preclinical and refusingclinical data are often susceptible to approve avarying interpretations and analyses, and many companies that have believed their product candidates performed satisfactorily in preclinical studies and clinical trials have nonetheless failed to obtain marketing approval of their products. We may experience numerous unforeseen events during drug development that could delay or prevent our ability to receive marketing approval or commercialize our product candidates. In particular, drug candidate for any or all indications of use.

Clinicalclinical trials of our product candidates may produce inconclusive or negative results. We have limited data regarding the safety, tolerability and efficacy of GPS administered as monotherapy or in combination with PD-1 inhibitors. For a new drug candidate requirefurther discussion of the enrollmentsafety risks in our trials, see the risk factor herein entitled "Our current and future product candidates, the methods used to deliver them or their dosage levels may cause undesirable side effects or have other properties that could delay or prevent their regulatory approval, limit the commercial profile of a sufficient number of patients, including patients who are suffering from the disease the drug candidate is intended to treat and who meet other eligibility criteria. Rates of patient enrollment are affected by many factors, and delays in patient enrollment canan approved label or result in increased costs and longer development times.
significant negative consequences following any regulatory approval." Clinical trials also require the review and oversight of IRBs, which approve and continuallyan institutional review clinical investigations and protect the rights and welfare of human subjects.board, or IRB. An inability or delay in obtaining IRB approval could prevent or delay the initiation and completion of clinical trials, and the FDA may decide not to consider any data or information derived from a clinical investigation not subject to initial and continuing IRB review and approval.

13

Numerous factors could affect

We may experience delays in our ongoing or future clinical trials, and we do not know whether planned clinical trials will begin or enroll subjects on time, will need to be redesigned or will be completed on schedule, if at all. There can be no assurance that the timing, cost or outcomeFDA will not put clinical trials of any of our drug development efforts, includingproduct candidates on clinical hold in the following:

future. Clinical trials may be delayed, suspended or prematurely terminated for a variety of reasons, such as:

• Delays in filing initial drug applications,
• Difficulty in securing centers to conduct trials,
• Conditions imposed on us by the FDA or comparable foreign authorities regarding the scopedelay or failure in reaching agreement with the FDA or a comparable foreign regulatory authority on a clinical trial design of our clinical trials,
• Problems in engaging IRBs to oversee trials or problems in obtaining or maintaining IRB approval of studies,
• Difficulty in enrolling patients in conformity with required protocols or projected timelines,
• Unexpected adverse reactions by patients in trials,
• Difficulty in obtaining clinical supplies of the product,
• Negative or inconclusive results from our clinical trials or the clinical trials of others for drug candidates similar to our own or inability to generate statistically significant data confirming the efficacy of the product being tested,
• Changes in the FDA’s requirements for our testing during the course of that testing,
• Modification of the drug during testing,
• Reallocation of our limited financial and other resources to other clinical programs, and
• Adverse results obtained by other companies developing RNAi drugs.
The substances we are intendingable to develop may represent a new class of drug, and the FDA has not yet established any definitive policies, practices or guidelines in relation to these drugs. While we expect any product candidates that we develop will be regulated as a new drug under the Federal Food, Drug, and Cosmetic Act, the FDA could decide to regulate them or other products we may develop as biologics underexecute;


8


the Public Health Service Act. The lack of policies, practices or guidelines may hinder or slow review by the FDA of any regulatory filings that we may submit. Moreover, the FDA may respond to these submissions by defining requirements that we may not have anticipated.
It is possible that none of the product candidates that we develop will obtain the appropriate regulatory approvals necessary for us to begin selling them or that any regulatory approval to market a product may be subject to limitations on the indicated uses for which we may market the product. The time required to obtain FDA and other approvals is unpredictable but often can take years following the commencement of clinical trials, depending upon the complexity of the drug candidate. Any analysis we perform of data from clinical activities is subject to confirmation and interpretation by regulatory authorities, which could delay, limit or prevent regulatory approval. Any delay or failure in obtaining authorization to commence a trial or inability to comply with conditions imposed by a regulatory authority regarding the scope or design of a trial;

delay or failure in reaching agreement on acceptable terms with prospective contract research organizations, or 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;

delay or failure in obtaining IRB approval or the approval of other reviewing entities, including comparable foreign regulatory authorities, to conduct a clinical trial at each site;

withdrawal of clinical trial sites from our clinical trials or the ineligibility of a site to participate in our clinical trials;

delay or failure in recruiting and enrolling suitable subjects to participate in a trial;

delay or failure in subjects completing a trial or returning for post-treatment follow-up;

clinical sites and investigators deviating from trial protocol, failing to conduct the trial in accordance with regulatory requirements, or dropping out of a trial;

inability to identify and maintain a sufficient number of trial sites, many of which may already be engaged in other clinical trial programs, including some that may be for the same indication;

failure of our third-party clinical trial managers, CROs, clinical trial sites, contracted laboratories or other third-party vendors to satisfy their contractual duties, meet expected deadlines or return trustworthy data;

delay or failure in adding new trial sites;

interim results or data that are ambiguous or negative or are inconsistent with earlier results or data;

alteration of trial design necessitated by re-evaluation of design assumptions based upon observed data;

feedback from the FDA, the IRB, DSMB or a comparable foreign regulatory authority, or results from earlier stage or concurrent preclinical studies and clinical trials, that might require modification to the protocol for a trial;

a decision by the FDA, the IRB, a comparable foreign regulatory authority, or us, or a recommendation by a DSMB or comparable foreign regulatory authority, to suspend or terminate clinical trials at any time for safety issues or for any other reason;

14

unacceptable risk-benefit profile, unforeseen safety issues or adverse side effects;

failure to demonstrate a benefit from using a product candidate;

difficulties in manufacturing or obtaining from third parties sufficient quantities of a product candidate to start or to use in clinical trials;

lack of adequate funding to continue a trial, including the incurrence of unforeseen costs due to enrollment delays, requirements to conduct additional studies or increased expenses associated with the services of our CROs and other third parties; or

changes in governmental regulations or administrative actions or lack of adequate funding to continue a clinical trial.

If we experience delays in the completion or termination of any clinical trial of our product candidates, the approval and commercial prospects of such product candidates will be harmed, delaying our ability to generate product revenues from such product candidate and our costs will most likely increase. The required regulatory approvals may also be delayed, thereby jeopardizing our ability to commence product sales and generate revenues and the period of commercial exclusivity for our products may be decreased. Regulatory approval of our product candidates may be denied for the same reasons that caused the delay.

Risks associated with operating in foreign countries could materially adversely affect our product development.

We may conduct future studies in countries outside of the United States. Consequently, we may be subject to risks related to operating in foreign countries. Risks associated with conducting operations in foreign countries include:

differing regulatory requirements for drug approvals and regulation of approved drugs in foreign countries; more stringent privacy requirements for data to be supplied to our operations in the United States,e.g., General Data Protection Regulation in the European Union;

unexpected changes in tariffs, trade barriers and 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;

differing payor reimbursement regimes, governmental payors or patient self-pay systems and price controls;

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

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

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

business interruptions resulting from geopolitical actions, including war and terrorism.

Our current and future product candidates, the methods used to deliver them or their dosage levels may cause undesirable side effects or have other properties that could delay or prevent their regulatory approval, limit the commercial profile of an approved label or result in significant negative consequences following any regulatory approval.

Undesirable side effects caused by our current or future product candidates, their delivery methods or dosage levels could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in a more restrictive label or the delay or denial of regulatory approval or termination of clinical trials by the FDA or other comparable foreign regulatory authority; an independent DSMB that is governing our clinical trials; or an IRB, that approves and, monitors biomedical research to protect the rights and welfare of human subjects. For example, although no high-grade delayed type hypersensitivity in the skin or systemic anaphylaxis events have been noted after GPS administration in patients treated in our clinical studies to date, it is theoretically possible that such toxicities, or other type of adverse events, may occur in future clinical studies. As a result of safety or toxicity issues that we may experience in our clinical trials, or negative or inconclusive results from the clinical trials of others for drug candidates similar to our own, we may not receive approval to market any product candidates, which could prevent us from ever generating revenues or achieving profitability. Results of our trials could reveal an unacceptably high severity and incidence of side effects. In such an event, our trials could be suspended or terminated, and the FDA or comparable foreign regulatory authorities could order us to cease further development of or deny approval of our product candidates for any or all targeted indications. The drug-related side effects could also affect patient recruitment or the ability of enrolled subjects to complete the trial or result in potential product liability claims. Any of these occurrences may have a material adverse effect on our business, results of operations, financial condition, cash flows and future prospects.

15

Additionally, if any of our product candidates receives regulatory approval, and we or others later identify undesirable side effects caused by such product, a number of potentially significant negative consequences could result, including that:

we may be forced to suspend marketing of such product;

regulatory authorities may withdraw their approvals of such product;

regulatory authorities may require additional warnings on the label that could diminish the usage or otherwise limit the commercial success of such products;

we may be required to conduct post-marketing studies;

we may be required to change the way the product is administered;

we could be sued and held liable for harm caused to subjects or patients; and

our reputation may suffer.

Any of these events could prevent us from achieving or maintaining market acceptance of the particular product candidate, if approved.

Our product development program may not uncover all possible adverse events that patients who take our product candidates may experience. The number of subjects exposed to product candidates and the average exposure time in the clinical development program may be inadequate to detect rare adverse events or chance findings that may only be detected once the product is administered to more patients and for greater periods of time.

Clinical trials by their nature utilize a sample of the potential patient population. However, with a limited number of subjects and limited duration of exposure, we cannot be fully assured that rare and severe side effects of our product candidates will be uncovered. Such rare and severe side effects may only be uncovered with a significantly larger number of patients exposed to our product candidates. If such safety problems occur or are identified after our product candidates reaches the market, the FDA may require that we amend the labeling of the product or recall the product, or may even withdraw approval for the product.

Our future success is dependent on the regulatory approval of our product candidates.

Our business is dependent on our ability to generate revenueobtain regulatory approval for our product candidates in a timely manner. We cannot commercialize product candidates in the United States without first obtaining regulatory approval for the product from the particular drugFDA. Similarly, we cannot commercialize product candidates outside of the United States without obtaining regulatory approval from comparable foreign regulatory authorities. Before obtaining regulatory approvals for the commercial sale of any product candidate for a target indication, we must demonstrate with substantial evidence gathered in preclinical studies and clinical trials, generally including two well-controlled Phase 3 trials, that the product candidate is safe and effective for use for that target indication and that the manufacturing facilities, processes and controls are adequate with respect to such product candidate.

We are also

The time required to obtain approval by the FDA and comparable foreign regulatory authorities is unpredictable but typically takes many years following the commencement of preclinical studies and clinical trials and depends upon numerous factors, including the substantial discretion of the regulatory authorities. In addition, approval policies, regulations, or the type and amount of clinical data necessary to gain approval may change during the course of a product candidate’s clinical development and may vary among jurisdictions.

Even if a product candidate were to successfully obtain approval from the FDA and comparable foreign regulatory authorities, any approval might contain significant limitations related to use restrictions for specified age groups, warnings, precautions or contraindications, or may be subject to numerous foreignburdensome post-approval study or risk management requirements. Also, any regulatory requirements governingapproval of our current or future product candidates, once obtained, may be withdrawn.

16

Our current and future product candidates could fail to receive regulatory approval from the conductFDA.

We have not obtained regulatory approval for any product candidate and it is possible that our existing product candidates or any future product candidates will not obtain regulatory approval, for many reasons, including:

disagreement with the regulatory authorities regarding the scope, design or implementation of our clinical trials;

failure to demonstrate that a product candidate is safe and effective for our proposed indication;

failure of clinical trials manufacturing and marketing authorization, pricing and third-party reimbursement. to meet the level of statistical significance required for approval;

failure to demonstrate that a product candidate’s clinical and other benefits outweigh its safety risks;

disagreement with our interpretation of data from preclinical studies or clinical trials;

the insufficiency of data collected from clinical trials of our product candidates to support the submission and filing of a BLA, NDA or other submission or to obtain regulatory approval;

the insufficiency of a single Phase 3 clinical trial of GPS in AML for regulatory approval in that indication;

failure to obtain approval of our manufacturing processes or facilities of third-party manufacturers with whom we contract for clinical and commercial supplies or our own manufacturing facility; or

changes in the approval policies or regulations that render our preclinical and clinical data insufficient for approval.

The FDA or a comparable foreign regulatory authority may require more information, including additional preclinical or clinical data to support approval or additional studies, which may delay or prevent approval and our commercialization plans, or we may decide to abandon the development program. If we were to obtain approval, regulatory authorities may approve any of our product candidates for fewer or more limited indications than we request (including failing to approve the most commercially promising indications), may grant approval contingent on the performance of costly post-marketing clinical trials, or may approve a product candidate with a label that does not include the labeling claims necessary or desirable for the successful commercialization of that product candidate.

If we are unable to obtain regulatory approval for one of our product candidates in one or more jurisdictions, or any approval contains significant limitations, we may not be able to obtain sufficient funding to continue the development of that product or generate revenues attributable to that product candidate.

We currently have Orphan Drug designation for certain product candidates, and may seek Orphan Drug Product designation for additional product candidates or indications, which might not be received or provide the intended benefit thereof.

Regulatory authorities in some jurisdictions, including the United States and Europe, may designate drugs for relatively small patient populations as Orphan Drugs. Under the Orphan Drug Act, the FDA may designate a product as an Orphan Drug if it is a drug intended to treat a rare disease or condition, which is generally defined as a patient population of fewer than 200,000 individuals annually in the United States. We have received Orphan Drug Product designations from the FDA for GPS in AML, MPM and MM as well as Orphan Medicinal Product designations from the EMA for GPS in AML, MPM and MM. We also have received Orphan Drug Product designation for GALE-301 and GALE-302 from the FDA. Although we have received Orphan Drug Product designation for GPS, GALE-301 and GALE-302, there is no guarantee that these products will be successfully approved by the FDA, that they will be commercially successful in the marketplace, or that another product will not be approved for the same indication ahead of our product candidate.

Even if we obtain Orphan Drug exclusivity for a product, that exclusivity may not effectively protect the product from competition because different drugs can be approved for the same condition. Even after an Orphan Drug is approved, the FDA can subsequently approve another drug for the same condition if the FDA concludes that the later drug is clinically superior in that it is shown to be safer, more effective or makes a major contribution to patient care. In addition, Orphan Drug exclusivity may be lost if the FDA or EMA 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.

17

We currently have Fast Track designation for certain product candidates and may seek Fast Track designation for additional product candidates or indications, which might not be received or provide the intended benefits thereof.

If a product candidate is intended for the treatment of a serious condition and nonclinical or clinical data demonstrate the potential to address unmet medical need for this condition, a product sponsor may apply to the FDA for Fast Track designation, which may or may not be granted by the FDA. The FDA has given us Fast Track designation for GPS in AML and MPM and for NPS for the adjuvant treatment of patients with early state breast cancer with low to intermediate HER2 expression following standard of care upfront therapy (surgery plus chemotherapy +/- radiotherapy).

However, Fast Track designation does not ensure that we will receive marketing approval or that approval will be granted within any particular timeframe. We may not experience a faster development or regulatory review or approval process with Fast Track designation compared to conventional FDA procedures. In addition, the FDA may withdraw Fast Track designation if it believes that the designation is no longer supported by data from our clinical development program. Fast Track designation alone does not guarantee qualification for the FDA’s priority review procedures.

Failure to obtain regulatory approval in international jurisdictions would prevent our product candidates from being marketed abroad.

In addition to regulations in the United States, to market and sell our product candidates in the European Union, United Kingdom, many Asian countries and other jurisdictions, we must obtain separate regulatory approvals and comply with numerous and varying regulatory requirements. Approval by the FDA does not ensure approval by regulatory authorities in other countries or jurisdictions, and approval by one regulatory authority outside the United States does not ensure approval by regulatory authorities in other countries or jurisdictions or by the FDA. The regulatory approval process outside the United States generally includes all of the risks associated with obtaining FDA approval described above as well as risks attributable to the satisfaction of local regulations in foreign jurisdictions. ApprovalThe approval procedure varies among countries and can involve additional testing. The time required to obtain approval may differ substantially from that required to obtain FDA approval. We may not be able to obtain approvals from regulatory authorities outside the United States on a timely basis, if at all. Clinical trials accepted in one country may not be accepted by regulatory authorities in other countries. In addition, many countries outside the United States require that a product be approved for reimbursement before it can be approved for sale in that country. A product candidate that has been approved for sale in a particular country may not receive reimbursement approval in that country.

We may not be able to file for regulatory approvals and may not receive necessary approvals to commercialize our products in any market. If we are unable to obtain approval of any of our current or future product candidates by regulatory authorities in the European Union, United Kingdom, Asia or elsewhere, the commercial prospects of that product candidate may be significantly diminished, our business prospects could decline and this could materially adversely affect our business, results of operations and financial condition.

Even if our current and future product candidates receive regulatory approval, they may still face future development and regulatory difficulties.

Even if we obtain regulatory approval for a product candidate, that approval would be subject to ongoing requirements by the FDA does not assureand comparable foreign regulatory authorities governing the manufacture, quality control, further development, labeling, packaging, storage, distribution, adverse event reporting, safety surveillance, import, export, advertising, promotion, recordkeeping and reporting of safety and other post-marketing information. These requirements include submissions of safety and other post-marketing information and reports, registration, as well as continued compliance by us and/or our contract manufacturing organizations, or CMOs, and CROs for any post-approval clinical trials that we may conduct. The safety profile of any product will continue to be closely monitored by the FDA and comparable foreign regulatory authorities after approval. If the FDA or comparable foreign regulatory authorities become aware of new safety information after approval of any of our product candidates, they may require labeling changes or establishment of a risk evaluation and mitigation strategy, impose significant restrictions on a product’s indicated uses or marketing or impose ongoing requirements for potentially costly post-approval studies or post-market surveillance.

In addition, manufacturers of drug products and their facilities are subject to continual review and periodic inspections by the FDA and other regulatory authorities for compliance with Good Manufacturing Practices, or cGMP, Good Clinical Practices, or GCP, and other regulations. If we or a regulatory agency discover previously unknown problems with a product, such as adverse events of unanticipated severity or frequency, or problems with the facility where the product is manufactured, a regulatory agency may impose restrictions on that product, the manufacturing facility or us, including requiring recall or withdrawal of the product from the market or suspension of manufacturing. If we, our product candidates or the manufacturing facilities for our product candidates fail to comply with applicable regulatory requirements, a regulatory agency may:

issue warning letters or untitled letters;

18

mandate modifications to promotional materials or require us to provide corrective information to healthcare practitioners;
require us to enter into a consent decree, which can include imposition of various fines, reimbursements for inspection costs, required due dates for specific actions and penalties for noncompliance;
seek an injunction or impose civil or criminal penalties or monetary fines;
suspend or withdraw regulatory approval;
suspend any ongoing clinical trials;
refuse to approve pending applications or supplements to applications filed by us;
suspend or impose restrictions on operations, including costly new manufacturing requirements; or
seize or detain products, refuse to permit the import or export of products, or require us to initiate a product recall.

The occurrence of any event or penalty described above may inhibit our ability to successfully commercialize our products and generate revenues.

Advertising and promotion of any product candidate that obtains approval in the United States will be heavily scrutinized by the FDA, the DOJ, the Office of Inspector General of HHS, state attorneys general, members of Congress and the public. A company can make only those claims relating to safety and efficacy, purity and potency that are approved by the FDA and in accordance with the provisions of the approved label. Additionally, advertising and promotion of any product candidate that obtains approval outside of the United States.

The FDA approval process mayStates will be delayedheavily scrutinized by comparable foreign regulatory authorities. Violations, including actual or alleged promotion of our products for any drugs we develop that require the use of specialized drug delivery devicesunapproved or vehicles.
Some drug candidates that we develop may needoff-label uses, are subject to be administered using specialized vehicles that deliver RNAi therapeutics directly to diseased parts of the body. For example, we anticipate using an implantable pump to deliver drug candidates to the nervous system. While we expect to rely on drug delivery vehicles that have been approvedenforcement letters, inquiries and investigations, and civil and criminal sanctions by the FDA, as well as prosecution under the federal False Claims Act. Any actual or alleged failure to comply with labeling and promotion requirements may have a negative impact on our business.

Even if we obtain regulatory approval for a product, we will remain subject to ongoing regulatory requirements.

Even if our product candidates are approved, we will be subject to ongoing regulatory requirements with respect to manufacturing, labeling, packaging, storage, advertising, promotion, sampling, record-keeping, conduct of post-marketing clinical trials and submission of safety, efficacy and other post-approval information, including both federal and state requirements in the United States and requirements of comparable foreign regulatory agenciesauthorities.

Manufacturers and manufacturers’ facilities are required to delivercontinuously comply with FDA and comparable foreign regulatory authority requirements, including ensuring quality control and manufacturing procedures conform to cGMP, regulations and corresponding foreign regulatory manufacturing requirements. Accordingly, we and our contract manufacturers will be subject to continual review and inspections to assess compliance with cGMP and adherence to commitments made in any NDA submission to the FDA or any other type of domestic or foreign marketing authorization application.

Any regulatory approvals we receive for any of our product candidates may be subject to limitations on the approved indicated uses for which the product candidate may be marketed or to the conditions of approval, or contain requirements for potentially costly post-marketing testing, including Phase 4 clinical trials, and surveillance to monitor the safety and efficacy of the product candidate. We will be required to report adverse reactions and production problems, if any, to the FDA and comparable foreign regulatory authorities. Any new legislation addressing drug candidates,safety issues could result in delays in product development or commercialization, or increased costs to assure compliance. If our original marketing approval for a product candidate was obtained through an accelerated approval pathway, we may needcould be required to modifyconduct a successful post-marketing clinical trial to confirm the designclinical benefit for our products. An unsuccessful post-marketing clinical trial or failure to complete such a trial could result in the withdrawal of marketing approval.

If a regulatory agency discovers previously unknown problems with a product, such as adverse events of unanticipated severity or frequency, or problems with the facility where the product is manufactured, or it disagrees with the promotion, marketing or labeling of these delivery vehicles for some products wea product, the regulatory agency may develop. In such an event, the FDA may regulateimpose restrictions on that product or us, including requiring withdrawal of the product asfrom the market. If we fail to comply with applicable regulatory requirements, a combinationregulatory agency or enforcement authority may, among other things:

19

issue warning letters;

impose civil or criminal penalties;

suspend or withdraw regulatory approval;

suspend any of our ongoing clinical trials;

refuse to approve pending applications or supplements to approved applications submitted by us;

impose restrictions on our operations, including closing our contract manufacturers’ facilities; or

require a product recall.

Any government investigation of a drugalleged violations of law would require us to expend significant time and a device or require additional approvals or clearances for the modified delivery. Additionally, it has been observedresources in at least one previous clinical trial, conducted by another company, that delivery vehicles similarresponse and could generate adverse publicity. Any failure to the delivery vehiclein-licensed from UMMScomply with ongoing regulatory requirements may cause toxicity, which could delay or prevent approval of this delivery vehicle.

Further, to the extent the specialized delivery vehicle is owned by another company, we would need that company’s cooperation to implement the necessary changes to the vehicle, or its labeling,significantly and to obtain any additional approvals or clearances. Any delays in finding suitable drug delivery vehicles to administer RNAi therapeutics directly to diseased parts of the body could negativelyadversely affect our ability to successfully develop and commercialize our RNAi therapeutics.
products and the value of our business and our operating results would be adversely affected.

Risks Related to Our Manufacturing

If we are not successful in developing pre-clinicalWe have limited to no manufacturing, sales, marketing or distribution capability and must rely upon third parties for such.

We currently have agreements with various third-party manufacturing facilities for production of our product candidates for research and development and testing purposes. We depend on these manufacturers to meet our deadlines, quality standards and specifications. Our reliance on third parties for the manufacture of our active pharmaceutical ingredient and drug product and, in the future, any approved products, creates a dependency that could severely disrupt our research and development, our clinical testing, and ultimately our sales and marketing efforts if the source of such supply proves to be unreliable or unavailable. If the contracted manufacturing source is unreliable or unavailable, we willmay not be able to commencemanufacture clinical trials in humans or obtain approvaldrug supplies of our product candidates, and our preclinical and clinical testing programs may not be able to move forward and our entire business plan could fail.

Both the active pharmaceutical ingredient and drug product for our product candidates.

candidates are currently single sourced. We believe these single sources are currently capable of supplying all anticipated needs of our proposed clinical studies, as well as initial commercial introduction. If we are able to commercialize our products in the future, there is no assurance that our manufacturers will be able to meet commercialized scale production requirements in a timely manner or in accordance with applicable standards or cGMP. Once the nature and scope of additional indications and their commensurate drug product demands are established, we will seek secondary suppliers of both the active pharmaceutical ingredient and drug product for our product candidates, but we cannot assure that such secondary suppliers will be found on terms acceptable to us, or at all.  

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

We and our CMOs will need to conduct significant development work for each product candidate for each target indication for studies, trials and commercial launch readiness. For example, the processes by which GPS is manufactured were initially developed by MSK for clinical purposes. Concurrent with the license of GPS, we acquired certain supplies intended for clinical use from MSK. These MSK clinical supplies may not be adequate for future clinical studies. We intend to improve the existing processes for GPS in connection with more advanced clinical trials or commercialization efforts we may undertake in the future. Developing commercially viable manufacturing processes is a difficult, expensive and uncertain task, and there are risks associated with scaling to the level required for advanced clinical trials or commercialization, including cost overruns, potential problems with process scale-up, process reproducibility, stability issues, consistency and timely availability of reagents or raw materials. The manufacturing facilities in which our product candidates will be made could be adversely affected by earthquakes and other natural disasters, equipment failures, labor shortages, power failures, and numerous other factors.

Additionally, the process of manufacturing our product candidates is complex, highly regulated and subject to several risks, including but not limited to:

product loss due to contamination, equipment failure or improper installation or operation of equipment, or vendor or operator error;

20

reduced production yields, product defects, and other supply disruptions due to deviations, even minor, from normal manufacturing and distribution processes;

unexpected product defects;

microbial, viral, or other contaminations in our product candidates or in the manufacturing facilities in which our product candidates are made, which may result in the closure of such manufacturing facilities for an extended period of time to allow for the investigation and remediation of the contamination;

adverse impact on the active ingredient of GPS as a result of potential contamination from the presence of heavy metals which can lead to higher than acceptable rates of impurities resulting in the active ingredient being unacceptable for use; and

adverse impact on the manufacturing of GPS as a result of potential contamination from excess water and oxygen which can lead to higher than acceptable levels of impurities resulting in the drug product being unacceptable for use.

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 drug substance and drug product, which could delay the development of our product candidates. We may also have to write off inventory, incur other charges and expenses for supply of drug product that fails to meet specifications, undertake costly remediation efforts, or seek more costly manufacturing alternatives. Inability to meet the demand for our product candidates could damage our reputation and the reputation of our products among physicians, healthcare payors, patients or the medical community, and cancer treatment centers, which could adversely affect our ability to operate our business and our results of operations.

In the clinical trials using GPS and NPS, GM-CSF is also administered and its availability is dependent upon a third-party manufacturer, which may or may not reliably provide GM-CSF, thus jeopardizing the completion of the trials.

Some of our product candidates are administered in combination with GM-CSF, which is available in both liquid and lyophilized forms exclusively from one manufacturer. We will continue to be dependent on that manufacturer for our supply of GM-CSF in connection with the ongoing GPS and NPS trials and the potential commercial manufacture of these programs. We have not entered into a dedicated supply agreement with the manufacturer for GM-CSF, and instead rely on purchase orders to meet our supply needs. Any temporary interruptions or discontinuation of the availability of GM-CSF, or any determination by us to change the GM-CSF used with GPS or NPS, could have a material adverse effect on our clinical trials and any commercialization of the assets.

If any of our CMOs’ clinical manufacturing facilities are damaged or destroyed or production at such facilities is otherwise interrupted, our business and prospects would be negatively affected.

If our CMOs’ manufacturing facilities or the equipment in them is damaged or destroyed, we may not be able to quickly or inexpensively replace our manufacturing capacity or replace it at all. In the event of a temporary or protracted loss of this facility or equipment, we might not be able to transfer manufacturing to another CMO. Even if we could transfer manufacturing to another CMO, the shift would likely be expensive and time-consuming, particularly because the new drug discovery phasefacility would need to comply with the necessary regulatory requirements and we would need FDA approval before selling any products manufactured at that facility. Such an event could delay our clinical trials or reduce our product sales.

Although we currently maintain insurance coverage against damage to our property and to cover business interruption and research and development restoration expenses, our insurance coverage may not reimburse us, or may not be sufficient to reimburse us, for any expenses or losses we may suffer. We may be unable to meet our requirements for our product candidates if there were a catastrophic event or failure of our current manufacturing facility or processes.

Risks Related to Our Dependence on Third Parties and Our License Agreements

We rely on third parties to conduct our preclinical studies and clinical trials. If these third parties do not successfully carry out their contractual duties or meet expected deadlines, or if we lose any of our CROs or other key third-party vendors, we may not be able to obtain regulatory approval for or commercialize our current or future product candidates on a timely basis, if at all.

Our internal capacity for clinical trial execution and management is limited and therefore we rely heavily on third parties. We have relied upon and plan to continue to rely upon third-party CROs, vendors and contractors to monitor and manage data for our ongoing preclinical and clinical programs. For example, our collaborating investigators at MSK, along with their clinical and clinical operations teams, manage the conduct of the ongoing clinical trials for GPS as well as perform the analysis, publication and presentation of data and results related to this program. We also rely on collaborating investigators, along with their clinical and clinical operations teams, at MSK for the collection and transfer of various types of follow-up data regarding studies previously conducted by MSK.

21

We plan to rely on CROs and other third-party vendors for all currently contemplated clinical studies, with services to be rendered by such CROs ranging from, in the case of assorted Phase 2 trials, specific and need-tailored (e.g., data management and biostatistics) only to, in the case of our immune combination (PD1 blocker) Phase 2 trials and our planned Phase 3 trial for GPS in AML, all-encompassing. We rely on these parties for the execution of our preclinical studies and clinical trials, including the proper and timely conduct of our clinical trials, and we control only some aspects of their activities. Outsourcing these functions involves risk that third parties may not yet identifiedperform to our standards, may not produce results or data in a timely manner or may fail to perform at all.

While we have agreements governing the commitments of our third-party vendor services, we have limited influence over their actual performance. Nevertheless, we are responsible for ensuring that each of our trials is conducted in accordance with the applicable protocol and legal, regulatory and scientific standards, and our reliance on the CROs does not relieve us of our regulatory responsibilities.

If our company, or any lead compounds for therapeutic developmentof our partners or CROs, fail to comply with applicable regulations and good clinical practices, the clinical data generated in our initial areas of focus. RNA interference is a relatively new scientific field,clinical trials may be deemed unreliable and the technologiesFDA or comparable foreign regulatory authorities may require us to perform additional clinical trials before approving our regulatory 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 applicable requirements. In addition, our clinical trials must be conducted with product produced under cGMP and other requirements. We are stillalso required to register ongoing clinical trials and post the results of completed clinical trials on a government-sponsored database, clinicaltrials.gov, within a specified timeframe. Failure to comply also would violate federal requirements in the early stageUnited States and could result in other penalties, which would delay the regulatory approval process and result in adverse publicity.

Our CROs, third-party vendors and contractors are not our employees, and except for remedies available to us under our agreements with such CROs, third-party vendors and contractors, we cannot control whether or not they devote sufficient time and resources, including experienced staff, to our ongoing clinical, nonclinical and preclinical programs. They may also have relationships with other entities, some of development. We have no compounds in pre-clinical toxicology studies,which may be our competitors. If CROs, third-party vendors and contractors do not successfully carry out their contractual duties or obligations or meet expected deadlines or if the quality or accuracy of the clinical data they obtain is compromised due to the failure to adhere to our clinical protocols, regulatory requirements or for other reasons, our clinical trials may be extended, delayed or terminated and we may not be able to advance anyobtain regulatory approval for or successfully commercialize our current or future product candidate throughcandidates. CRO, vendor or contractor errors could cause our results of operations and the pre-clinical stage into clinical trials. Additionally,commercial prospects for our development efforts may never resultcurrent or future product candidates to be harmed, our costs to increase and our ability to generate revenues to be delayed.

In addition, the use of third-party service providers requires us to disclose our proprietary information to these parties, which could increase the risk that this information will be misappropriated. We currently have a small number of employees, which limits the internal resources we have available to identify and monitor our third-party providers. To the extent we are unable to identify and successfully manage the performance of third-party service providers in the identificationfuture, our business may be adversely affected. Though we carefully manage our relationships with our CROs, there can be no assurance that we will not encounter challenges or delays in the future or that these delays or challenges will not have a material adverse impact on our business, financial condition and prospects.

If any of a pre-clinical candidate which we are able to successfully develop into a drug. Even if we are able to designate a lead candidate,our relationships with our third-party CROs, third-party vendors or contractors terminate, we may not be able to identify data that would support entering such a candidate into clinical trials. Furthermore, even if we successfully enter into clinical studies,arrangements with alternative CROs, third-party vendors or contractors on a timely basis, on commercially reasonable terms or at all.

Our CROs, third-party vendors and contractors have the results from pre-clinical testingright to terminate their agreements with us in the event of a drug candidate may not predictan uncured material breach. In addition, some of our CROs, third-party vendors and contractors have an ability to terminate their respective agreements with us if it can be reasonably demonstrated that the results that will be obtained on human clinical trials.

If our pre-clinical testing does not produce successful results orsafety of the subjects participating in our clinical trials do not demonstrate safety and efficacy in humans,warrants such termination, if we will not be able to commercialize our drug candidates.
Before obtaining regulatory approvalmake a general assignment for the salebenefit of our drug candidates, we must conduct, at our own expense, extensive pre-clinical tests and clinical trials to demonstrate the safety and efficacy in humans of our


9


drug candidates. However,creditors or if we are required to do extensive testing in animal models with our product candidates before weliquidated. Identifying, qualifying and managing performance of third-party service providers can be approved by the FDA to initiate clinical trialsdifficult, time consuming and cause delays in humans. Furthermore, we cannot be sure that our product candidates will be safely tolerated by humansdevelopment programs. In addition, there is a natural transition period when a new CRO, third-party vendor or be efficacious. Pre-clinical and clinical testing is expensive, difficult to design and implement, can take many years to complete and is uncertain as to outcome. Success in pre-clinical testing and early clinical trials does not ensure that later clinical trials will be successful, and interim results of a clinical trial do not necessarily predict final results.
A failure of one or more of our pre-clinical studies or clinical trials can occur at any stage of testing. We may experience numerous unforeseen events during, or as a result of, the pre-clinical testingcontractor commences work and the clinical trial process that could delaynew CRO, third-party vendor or prevent our ability to receive regulatory approval or potentially commercialize our drug candidates, including:
• Regulators or IRBs may not authorize us to commence a clinical trial or conduct a clinical trial at a prospective trial site,
• Our pre-clinical tests or clinical trials may produce negative or inconclusive results, and we may decide, or regulator may require us, to conduct additional pre-clinical testing or clinical trials, or we may abandon projects that we previously expected to be promising,
• Enrollment in our clinical trials may be slower than we anticipate or participants may drop out of our clinical trials at a higher rate than we anticipate, resulting in significant delays,
• Our third party contractors may fail to comply with regulatory requirements or meet their contractual obligations to us in a timely manner,
• Our drug candidates may have very different chemical and pharmacological properties in humans than in laboratory testing and it may interact with human biological systems in unforeseen, ineffective or harmful ways,
• We might have to suspend or terminate our clinical trials if the participants are being exposed to unacceptable health risks,
• IRBs or regulators, including the FDA, may require that we hold, suspend or terminate clinical research for various reasons, including noncompliance with regulatory requirements,
• the cost of our clinical trials may be greater than we anticipate,
• the supply or quality of our drug candidates or other necessary materials necessary to conduct our clinical trials may be insufficient or inadequate, and
• effects of our drug candidates may not be the desired effects or may include undesirable side effects or the drug candidates may have other unexpected characteristics.
Even if we obtain regulatory approvals, our marketed drugs will be subject to ongoing regulatory review. If we fail to comply with continuing U.S. and foreign regulations, we could lose our approvals to market drugs and our business would be materially adversely affected.
Following any initial regulatory approval of any drugs we may develop, we will also be subject to continuing regulatory review, including the review of adverse drug experiences and clinical results that are reported after our drug products are made available to patients. This would include results from any post marketing tests or vigilance required as a condition of approval. The manufacturer and manufacturing facilities we use to make any of our drug candidates will also be subject to periodic review and inspection by the FDA. The discovery of any new or previously unknown problems with the product, manufacturer or facility may result in restrictions on the drug or manufacturer or facility, including withdrawal of the drug from the market. Our product promotion and advertising also will be subject to regulatory requirements and continuing regulatory review. If we fail to comply with applicable continuing regulatory requirements, we may be subject to fines, suspension or withdrawal of regulatory approval, product recalls and seizures, operating restrictions and other adverse consequences.


10


Even if we receive regulatory approval to market our product candidates, our product candidates may not be accepted commercially, which may prevent us from becoming profitable.
The product candidates that we are developing are based on new technologies and therapeutic approaches. RNAi products are expected to be substantially more expensive to manufacture than traditional small molecule drugs, which may make them more costly than competing small molecule drugs. Additionally, RNAi products are likely to require injection or implantation, and do not readily cross the so-called blood brain barrier, which will make them less convenient to administer than drugs administered orally. Key participants in the pharmaceutical marketplace, such as physicians, medical professionals working in large reference laboratories, public health laboratories and hospitals, third-party payors and consumers, may not accept products intended to improve therapeutic results based on RNAi technology. As a result, it may be more difficult for us to convince the medical community and third-party payors to accept and use our product, or to provide favorable reimbursement. And if medical professionals working with large reference laboratories, public health laboratories and hospitals choose not to adopt and use our RNAi technology, our products may not achieve broader market acceptance.
Other factors that we believe will materially affect market acceptance of our product candidates include:
• The timing of our receipt of any marketing approvals, the terms of any approvals and the countries in which approvals are obtained,
• The safety, efficacy and ease of administration of our product candidates,
• The advantages of our product candidates over those of our competitors,
• The willingness of patients to accept relatively new therapies,
• The success of our physician education programs,
• The availability of government and third-party payor reimbursement,
• The pricing of our products, particularly as compared to alternative treatments, and
• The availability of effective alternative treatments and the relative risksand/or benefits of the treatments.
We may be unable to protect our intellectual property rights licensed from UMMS or others, our intellectual property rights may be inadequate to prevent third parties from using our technologies or developing competing products, and we may need to license additional intellectual property from others.
We have a non-exclusive license to the Mello and Fire foundational RNAi patent owned by UMMS and the Carnegie Institution of Washington, which claims various aspects of RNAi or genetic inhibition by double stranded RNA. This license continues to be available to third parties, and as such it does not provide us with the ability to exclude others from its use or protect us from competition. Therapeutic applications of gene silencing technology and other technologies that we license from UMMS are also claimed in a number of UMMS pending patent applications, but there can be no assurance that these applications will result in any issued patents or that those patents would withstand possible legal challenges or protect RXi’s technologies from competition. United States Patent and Trademark Office and patent granting authorities in other countries have upheld stringent standards for the RNAi patents that have been prosecuted so far. Consequently, pending patents that we have licensed may continue to experience long and difficult prosecution challenges and may ultimately issue with much narrower claims than those in the pending applications. We are aware of a number of issued patents covering various particular forms and compositions of RNAi-mediating molecules and therapeutic methods that we do not currently expect to use. Third parties may, however, hold or seek to obtain additional patents that could make it more difficult or impossible for us to develop products based on the gene silencing technology that we have licensed.
In addition, others may challenge the patent owned by UMMS and the Carnegie Institution of Washington or other patents that we currently license or may license in the future and, as a result, these patents could be narrowed, invalidated or rendered unenforceable, which would negatively affect our ability to exclude others


11


from use of RNAi technologies described in these patents. There can be no assurance that these patent or other pending applications or issued patents we licensed in will withstand possible legal challenges. Moreover, the laws of some foreign countries may not protect our proprietary rights to the same extent as do the laws of the United States. Any patents issued to us or our licensorscontractor may not provide us with any competitive advantages, and there can be no assurance that the patentssame type or level of others will not have an adverse effect on our ability to do business or to continue to use our technologies freely. Our efforts to enforce and maintain our intellectual property rights may not be successful and may result in substantial costs and diversion of management time. Even if our rights are valid, enforceable and broad in scope, competitors may develop products based on technology that is not covered by our licenses.services as the original provider.

22

We have entered into an invention disclosure agreement with UMMS under which UMMS has agreed to disclose to us certain inventions it makes and to give us the exclusive right to negotiate licenses to the disclosed technologies. There can be no assurance, however, that any such inventions will arise, that we will be able to negotiate licenses to any inventions on satisfactory terms, or at all, or that any negotiated licenses will prove commercially successful.
We may need to license additional intellectual property rights from third parties in order to be able to complete the development or enhance the efficacy of our product candidates or avoid possible infringement of the rights of others. Additionally, many of our UMMS licenses are limited to ALS, obesity, diabetes and cancer, and in order to pursue other diseases against proprietary gene targets, we may need licenses from UMMS or other third parties that may be unavailable. To the extent that we are required to obtain multiple licenses from third parties to develop or commercialize a product candidate, the aggregate licensing fees and milestones and royalty payments made to these these parties may materially reduce our economic returns or even cause us to abandon development or commercialization of a product candidate. Accordingly, there is no assurance that we will be able to acquire any additional intellectual property rights on satisfactory terms, or at all.
In addition to our licenses, we also rely on copyright and trademark protection, trade secrets, know-how, continuing technological innovation and licensing opportunities. In an effort to maintain the confidentiality and ownership of our trade secrets and proprietary information, we require our employees, consultants, advisors and others to whom we disclose confidential information to execute confidentiality and proprietary information agreements. However, it is possible that these agreements may be breached, invalidated or rendered unenforceable, and if so, there may not be an adequate corrective remedy available. Furthermore, like many companies in our industry, we may from time to time hire scientific personnel formerly employed by other companies involved in one or more areas similar to the activities we conduct. In some situations, our confidentiality and proprietary information agreements may conflict with, or be subject to, the rights of third parties with whom our employees, consultants or advisors have prior employment or consulting relationships. Although we require our employees and consultants to maintain the confidentiality of all confidential information of previous employers, we or these individuals may be subject to allegations of trade secret misappropriation or other similar claims as a result of their prior affiliations. Finally, others may independently develop substantially equivalent proprietary information and techniques, or otherwise gain access to our trade secrets. Our failure to protect our proprietary information and techniques may inhibit or limit our ability to exclude certain competitors from the market and execute our business strategies.

Other companies or organizations may assert patent rights that prevent us from developing our products.

RNA interference is a relatively new scientific field that has generated many different patent applications from organizations and individuals seeking to obtain important patents in the field. These applications claim many different methods, compositions and processes relating to the discovery, development and commercialization of RNAi therapeutics. Because the field is so new, very few of these patent applications have been fully processed by government patent offices around the world, and there is a great deal of uncertainty about which patents will issue, when, to whom, and with what claims. While we are not aware of any litigation, threatened litigation or challenge to our intellectual property rights, it is likely that there will be significant litigation and other proceedings, such as interference and opposition proceedings in various patent offices, relating to patent rights in the RNAi field. Others may attempt to invalidate our intellectual property rights or those of our licensors. Even if our rights, or those of our licensors, are not directly challenged, disputes among


12


third parties could lead to the weakening or invalidation of our intellectual property rights. Any attempt by third parties to circumvent or invalidate our intellectual property rights could be costly to defend, require significant time and attention of our management and have a material adverse effect on our business.
We are dependent on technologies we license, and if we lose the right to license such technologies or we fail to license new technologies in the future, our ability to develop new products would be harmed.harmed, and if we fail to meet our obligations under our license agreements, we may lose the ability to develop our product candidates.

We currently are dependent on licenses from third parties for our key technologies including licenses from UMMS and from Cold Spring Harbor Laboratory, relating to fundamental RNAi technologies.our product candidates. Our current licenses impose, and any future licenses we enter into are likely to impose, various development, funding, royalty, diligence, sublicensing, insurance and other obligations on us. If our license with respect to any of these technologies is terminated for any reason, the development of the products contemplated by the licenses would be delayed, or suspended altogether, while we seek to license similar technology or develop new non-infringing technology. The costs of obtaining new licenses are high,high. For example, we are entirely dependent on our license from MSK to allow us to develop and many patents in the RNAi fieldcommercialize our lead product candidate, GPS, and any loss of or challenge to our license agreement with MSK could have a material and adverse effect on our business and result of operations.

Under certain license agreements that we have already been exclusively licensedentered into, we have minimum dollar amounts per year that we are obligated to third parties, including our competitors. If any of our existing licenses is terminated,spend on the development of the technology we have licensed from our contract partners and other obligations to maintain certain licenses. If we fail to meet such requirements under any of our licenses or if we fail to comply with any other obligations under these licenses, we may be in breach of our obligations under such agreements, which may result in the loss of the technology licensed.

In addition, our business depends on our ability to license therapeutic compounds from third parties. If we fail to meet our obligations under our license agreements, we may lose the ability to develop our product candidates, which would adversely affect our business.

We have in-licensed a significant portion of our intellectual property from MSK. If we breach our license agreement with MSK, we could lose the ability to continue the development and potential commercialization of GPS.

We do not currently own any patents or patent applications related to our lead product candidate, GPS. GPS is licensed-in from MSK and includes an exclusive license to United States and foreign patent applications. Under the MSK license agreement, we are subject to various obligations, including diligence obligations with respect to funding, development and commercialization activities, payment obligations upon achievement of certain milestones and royalties on product sales, as well as other material obligations. If there is any conflict, dispute, disagreement or issue of nonperformance between us and MSK regarding our rights or obligations under the license agreements, including any such conflict, dispute or disagreement arising from our failure to satisfy diligence or payment obligations under any such agreement, we may be liable to pay damages and MSK may have a right to terminate the affected license. In 2018, we did not make certain required payments to MSK, which entitles MSK to terminate the license agreement if we are unable to make such payments after notice. To date, we have not received such a notice from MSK. The loss of our license agreement with MSK could materially adversely affect our ability to proceed to utilize the affected intellectual property in our development efforts, our ability to enter into future collaboration, licensing and/or marketing agreements for GPS and our ability to commercialize GPS. The risks described elsewhere pertaining to our patents and other intellectual property rights also apply to the intellectual property rights that we license, and any failure by us or our licensors to obtain, maintain and enforce these rights could have a material adverse effect on our business.

We may not realize the benefits of our strategic alliances that we may form in the future.

We may form strategic alliances, create joint ventures or collaborations or enter into licensing arrangements with third parties that we believe will complement or augment our existing business. These relationships, or those like them, may require us to incur nonrecurring 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 alliances and the negotiation process is time-consuming and complex. Moreover, we may not be successful in our efforts to establish a strategic alliance or other alternative arrangements for any future product candidates and programs because our research and development pipeline may be insufficient, our product candidates and programs may be deemed to be at too early a stage of development for collaborative effort and third parties may not view our product candidates and programs as having the requisite potential to demonstrate safety and efficacy. If we license products contemplatedor acquire 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 alliances agreements related to our product candidates could also delay the development and commercialization of our product candidates and reduce their competitiveness even if they reach the market.

Our business involves the use of hazardous materials and we and our third-party manufacturers and suppliers must comply with environmental, health and safety laws and regulations, which can be expensive and restrict how we do business.

Our third-party manufacturers’ and suppliers’ activities involve the controlled storage, use and disposal of hazardous materials. We and our manufacturers and suppliers are subject to laws and regulations governing the use, manufacture, storage, handling and disposal of these hazardous materials even after we sell or otherwise dispose of the products. In some cases, these hazardous materials and various wastes resulting from their use will be stored at our contractors or manufacturers’ facilities pending use and disposal. We cannot completely eliminate the risk of contamination, which could cause injury to our employees and others, environmental damage resulting in costly cleanup and liabilities under applicable laws and regulations governing the use, storage, handling and disposal of these materials and specified waste products. Although we expect that the safety procedures utilized by our third-party contractors and manufacturers for handling and disposing of these materials will generally comply with the licensesstandards prescribed by these laws and regulations, we cannot guarantee that this will be the case or eliminate the risk of accidental contamination or injury from these materials. In such an event, we may be held liable for any resulting damages and such liability could exceed our resources. We do not currently carry biological or hazardous waste insurance coverage and our property and casualty, and general liability insurance policies specifically exclude coverage for damages and fines arising from biological or hazardous waste exposure or contamination.

23

We may not be delayedable to establish or terminatedmaintain the third-party relationships that are necessary to develop or potentially commercialize some or all of our product candidates.

We expect to depend on collaborators, partners, licensees, clinical research organizations and other third parties to support our discovery efforts, to formulate product candidates, to manufacture our product candidates, and to conduct clinical trials for some or all of our product candidates. We cannot guarantee that we will be able to successfully negotiate agreements for or maintain relationships with collaborators, partners, licensees, clinical investigators, vendors and other third parties on favorable terms, if at all. Our ability to successfully negotiate such agreements will depend on, among other things, potential partners’ evaluation of the superiority of our technology over competing technologies and the quality of the preclinical and clinical data that we have generated, and the perceived risks specific to developing our product candidates. If we are unable to obtain or maintain these agreements, we may not be able to clinically develop, formulate, manufacture, obtain regulatory approvals for or commercialize our product candidates. We cannot necessarily control the amount or timing of resources that our contract partners will devote to our research and development programs, product candidates or potential product candidates, and we cannot guarantee that these parties will fulfill their obligations to us under these arrangements in a timely fashion. We may not be able to readily terminate any such agreements with contract partners even if such contract partners do not fulfill their obligations to us.

In addition, we may receive notices from third parties from time to time alleging that our technology or product candidates infringe upon the intellectual property rights of those third parties. Any assertion by third parties that our activities or product candidates infringe upon the intellectual property rights of third parties may adversely affect our ability to secure strategic partners or licensees for our technology or product candidates or our ability to secure or maintain manufacturers for our compounds.

Risks Related to Our Intellectual Property

We may not be able to obtain and enforce patent rights or other intellectual property rights that cover our product candidates and that are of sufficient breadth to prevent third parties from competing against us.

Our success with respect to our product candidates will depend in part on our ability to obtain and maintain patent protection in the United States and abroad, to preserve our trade secrets, and to prevent third parties from infringing upon our proprietary rights. We seek to protect our proprietary position by filing in the United States and in certain foreign jurisdictions patent applications related to our novel technologies and product candidates that are important to our business. The patent prosecution process is expensive and time-consuming, and we may not be able to negotiate additional licenses on acceptable terms, iffile and prosecute all necessary or desirable patent applications at a reasonable cost or in a timely manner. It is also possible that we will fail to identify patentable aspects of our research and development output before it is too late to obtain patent protection. In addition, we may not pursue or obtain patent protection in all which wouldmajor markets. Our competitors may be able to design around our owned or licensed patents by developing similar or alternative peptides or technologies without infringing our intellectual property rights. Moreover, in some circumstances, we do not have the right to control the preparation, filing or prosecution of patent applications, or to maintain the patents, covering technology that we license from third parties or covering technology that a material adverse effect oncollaboration or commercialization partner may develop. In some circumstances, our licensors have the right to enforce the licensed patents without our involvement or consent, or to decide not to enforce or to allow us to enforce the licensed patents. Therefore, these patents and applications may not be prosecuted and enforced in a manner consistent with the best interests of our business.

We are subject If any such licensors fail to potential liabilities from clinical testingmaintain such patents, or lose rights to those patents, the rights that we have licensed may be reduced or eliminated and future product liability claims.
Ifour ability to develop and commercialize any of our future products that are allegedthe subject of such licensed rights could be adversely affected.

The patent position of biotechnology and pharmaceutical companies generally is highly uncertain, involves complex legal and factual questions and has in recent years been the subject of much litigation. In addition, the laws of foreign jurisdictions may not protect our rights to the same extent as the laws of the United States. For example, European patent law restricts the patentability of methods of treatment of the human body more than U.S. law does. Publications of discoveries in the scientific literature often lag behind the actual discoveries, and patent applications in the United States and other jurisdictions are typically not published until 18 months after filing, or in some cases not at all. Therefore, we cannot be defective, they may expose uscertain that we or our licensors were the first to claimsmake the inventions claimed in our owned or licensed patents or pending patent applications, or that we or our licensors were the first to file for personal injury by patients in clinical trialspatent protection of such inventions. Moreover, the U.S. Patent and Trademark Office, or USPTO, might require that the term of a patent issuing from a pending patent application be disclaimed and limited to the term of another patent that is commonly owned or names a common inventor. As a result, the issuance, scope, validity, term, enforceability and commercial value of our patent rights are highly uncertain.

24

Our pending and future patent applications, and any collaboration or commercialization partner’s pending and future patent applications, may not result in patents being issued which protect our technology or products, in whole or by patients usingin part, or which effectively prevent others from commercializing competitive technologies and products.

During prosecution of any patent application, the issuance of any patents based on the application may depend upon our commercially marketed products. Even ifor their ability to generate additional preclinical or clinical data that support the marketing of one or morepatentability of our products is approved by the FDA, usersproposed claims. We or any collaboration or commercialization partner may claim that such products caused unintended adverse effects. We will seek to obtain clinical trial insurance for clinical trials that we conduct, as well as liability insurance for any products that we market. There can be no assurance that we willnot be able to obtain insurance in the amounts we seek,generate sufficient additional data on a timely basis, or at all. We anticipate that licensees who develop our products will carry liability insurance coveringMoreover, changes in either the clinical testing and marketingpatent laws or interpretation of those products. There is no assurance, however, that any insurance maintained by us or our licensees will prove adequatethe patent laws in the eventUnited States or other countries may diminish the value of our or a claim against us. Evencollaboration or commercialization partner’s patents or narrow the scope of our or their patent protection.

Changes in either the patent laws or in the interpretations of patent laws in the United States or abroad may diminish the value of our intellectual property.

On September 16, 2011, the Leahy-Smith America Invents Act, or the Leahy-Smith Act, was signed into law. The Leahy-Smith Act includes a number of significant changes to the U.S. patent law. These include provisions that affect the way patent applications will be prosecuted and may also affect patent litigation. Accordingly, it is not clear what, if claims asserted against us are unsuccessful, they may divert management’s attention fromany, impact the Leahy-Smith Act will have on the operation of our operationsbusiness. However, the Leahy-Smith Act, in particular the first-to-file provision and we may have to incur substantialour implementation, could increase the uncertainties and costs to defend such claims.

Any drugs we develop may become subject to unfavorable pricing regulations, third-party reimbursement practicessurrounding the prosecution of our patent applications and the enforcement of or healthcare reform initiatives,defense of our issued patents, all of which could have a material adverse effect on our business and financial condition. Accordingly, we cannot predict the breadth of claims that may be allowed or enforced in our patents or in third-party patents.

In addition, U.S. Supreme Court rulings have narrowed the scope of patent protection available in certain circumstances in certain situations. From time to time, the U.S. Supreme Court, other federal courts, the U.S. Congress, or interpretation by the USPTO may change the standards of patentability and any such changes could have a negative impact on our business.

Some cases decided by the U.S. Supreme Court have involved questions of when claims reciting abstract ideas, laws of nature, natural phenomena and/or natural products are eligible for a patent, regardless of whether the claimed subject matter is otherwise novel and inventive. These cases include Association for Molecular Pathology v. Myriad Genetics, Inc., 569 U.S. 576 (2013), also known as the Myriad decision; Alice Corp. v. CLS Bank International, 573 U.S. 13-298 (2014), also known as the Alice decision; and Mayo Collaborative Services v. Prometheus Laboratories, Inc., also known as the Prometheus decision, 566 U.S. 66 (2012). The full impact of these decisions is not yet known. In view of these and subsequent court decisions, the USPTO has issued materials to patent examiners providing guidance for determining the patent eligibility of claims reciting laws of nature, natural phenomena, or natural products.

Our current product candidates include products, or components, derived to various extents from nature; therefore, these decisions and their interpretation by the courts and the USPTO may impact prosecution, defense, and enforcement of certain types of patent claims in our patent portfolio. In addition to increasing uncertainty with regard to our ability to obtain future patents, this combination of events has created uncertainty with respect to the value of patents, once obtained. Depending on these and other decisions by U.S. Congress, the federal courts, and the USPTO, the laws and regulations governing patents could change or be interpreted in unpredictable ways that would weaken our ability to obtain some patent claims or to enforce patents that may issue to us in the future. In addition, these events may adversely affect our ability to defend patents that may issue in procedures in the USPTO or in U.S. courts.

While we intend to take actions reasonably necessary to enforce our patent rights, we may not be able to detect infringement of our own or in-licensed patents, which may be especially difficult for methods of manufacturing or formulation products.

We depend, in part, on our licensors and collaborators to protect a substantial portion of our proprietary rights. In addition, third parties may challenge our in-licensed patents and any of our own patents that we may obtain, which could result in the invalidation or unenforceability of some or all of the relevant patent claims. Litigation or other proceedings to enforce or defend intellectual property rights is very complex, expensive, and may divert our management’s attention from our core business and may result in unfavorable results that could adversely affect our ability to prevent third parties from competing with us.

25

If another party has reason to assert a substantial new question of patentability against any of our claims in our own and in-licensed patents, the third party can request that the patent claims be reexamined, which may result in a loss of scope of some claims or a loss of the entire patent. In addition to potential infringement suits, and interference and reexamination proceedings, we may become a party to patent opposition proceedings where either the patentability of the inventions subject of our patents are challenged, or we are challenging the patents of others. The costs of these proceedings could be substantial, and it is possible that such efforts would be unsuccessful. As the medical device, biotechnology and pharmaceutical industries expand and more patents are issued, the risk increases that others may assert our commercial product and/or product candidates infringe their patent rights. If a third-party’s patents were found to cover our commercial product and product candidates, proprietary technologies or our uses, we or our collaborators could be enjoined by a court and required to pay damages and could be unable to continue to commercialize our products or use our proprietary technologies unless we or it obtained a license to the patent. A license may not be available to us or our collaborators on acceptable terms, if at all. In addition, during litigation, the patent holder could obtain a preliminary injunction or other equitable relief, which could prohibit us from making, using or selling our commercial product and product candidates pending a trial on the merits, which could be years away.

Our product candidates may face competition sooner than expected after the expiration of our composition of matter patent protection for such products.

Our composition of matter patents for certain of our product candidates have expired or will expire prior to any product approval. We intend to sellseek data exclusivity or market exclusivity for our GPS as well as our NPS, GALE-301 and GALE-302 product candidates provided under the Federal Food, Drug and Cosmetic Act, or FDCA, and similar laws in other countries. We believe that these product candidates will qualify for 12 years of data exclusivity under the Biologics Price Competition and Innovation Act of 2009, or BPCIA. Under the BPCIA, an application for a biosimilar product or BLA cannot be submitted to the FDA until four years, or if approved by the FDA, until 12 years, after the original brand product identified as the reference product is approved under a BLA. The BPCIA provides an abbreviated pathway for the approval of biosimilar and interchangeable biological products. The abbreviated regulatory pathway establishes legal authority for the FDA to review and approve biosimilar biologics, including the possible designation of a biosimilar as “interchangeable” based on our similarity to an existing brand product. The law is complex and continues to be interpreted and implemented by the FDA. There is also a risk that the U.S. Congress could amend the BPCIA to shorten this exclusivity period, potentially creating the opportunity for biosimilar competition sooner than anticipated after the expiration of our patent protection. Moreover, the extent to which a biosimilar, once approved, will be substituted for any reference product in a way that is similar to traditional generic substitution for non-biological products is not yet clear, and will depend on a number of marketplace and regulatory factors that are still developing.

Even if, as we expect, GPS, NPS, GALE-301 and GALE-302 are considered to be reference products eligible for 12 years of exclusivity under the BPCIA or qualify for five years of exclusivity as drugs under the FDCA, another company could market competing products if the FDA approves a full BLA or full NDA for such product containing the sponsor’s own preclinical data and data from adequate and well-controlled clinical trials to demonstrate the safety, purity and potency of the products.

In some countries outside of the United States, peptide vaccines, such as GPS, NPS, GALE-301 and GALE-302, are regulated as chemical drugs rather than as biologics and may or may not be eligible for non-patent exclusivity.

If we are sued for infringing the intellectual property rights of third parties, such litigation could be costly and time-consuming and could prevent or delay our development and commercialization efforts.

Our commercial success depends, in part, on us and our collaborators not infringing the patents and proprietary rights of third parties. There is a substantial amount of litigation and other adversarial proceedings, both within and outside the United States, involving patent and other intellectual property rights in the biotechnology and pharmaceutical industries, including patent infringement lawsuits, interference or derivation proceedings, oppositions, andinter partes and post-grant review proceedings before the USPTO and non-U.S. patent offices. Numerous U.S. and non-U.S. issued patents and pending patent applications owned by third parties exist in the fields in which we are developing and may develop our current and future product candidates. As the biotechnology and pharmaceutical industries expand and more patents are issued, and as our product pipeline grows, the risk increases that our product candidates may be subject to claims of infringement of third parties’ patent rights as it may not always be clear to industry participants, including us, which patents cover various types of products or methods of use. The coverage of patents is subject to interpretation by the courts, and the interpretation is not always uniform or predictable.

If we are sued for patent infringement, we would need to demonstrate that our product candidates, products and methods either do not infringe the patent claims of the relevant patent or that the patent claims are invalid, and we may not be able to do this. Proving that a patent is invalid is difficult. If any issued third-party patents were held by a court of competent jurisdiction to cover aspects of our materials, formulations, methods of manufacture or methods for treatment, we could be forced, including by court order, to cease developing, manufacturing or commercializing the relevant product candidate until such patent expired. Alternatively, we may be required to obtain a license from such third party in order to use the infringing technology and to continue developing, manufacturing or marketing the infringing product candidate. We could be prevented from commercializing a product candidate or be forced to cease some aspect of our business operations, if, as a result of actual or threatened patent infringement claims, we are unable to enter into licenses on acceptable terms. In addition, parties making claims against us may also obtain injunctive or other equitable relief, which could effectively block our ability to further develop and commercialize one or more of our product candidates.

26

Defending against claims of patent infringement or misappropriation of trade secrets could be costly and time consuming, regardless of the outcome. Thus, even if we were to ultimately prevail, or to settle at an early stage, such litigation could burden us with substantial unanticipated costs. In addition, litigation or threatened litigation could result in significant demands on the time and attention of our management team, distracting them from the pursuit of other company 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 if we are found to have willfully infringed a patent, or to redesign our infringing product candidates, which may be impossible or require substantial time and monetary expenditure. we may also elect to enter into license agreements in order to settle patent infringement claims prior to litigation, and any such license agreement may require us to pay royalties and other fees that could be significant. During the course of any patent or other intellectual property litigation, there could be public announcements of the results of hearings, rulings on motions, and other interim proceedings in the litigation. If securities analysts or investors regard these announcements as negative, the perceived value of our product candidates, programs or intellectual property could be diminished. Accordingly, the market price of our shares of common stock may decline.

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

Filing, prosecuting, enforcing and defending patents on our current and future product candidates in all countries throughout the world would be prohibitively expensive. We or our licensors’ intellectual property rights in certain countries outside the United States may be less extensive than those in the United States. In addition, the laws of certain foreign countries do not protect intellectual property rights to the same extent as laws in the United States. Consequently, we and our licensors may not be able to prevent third parties from practicing our and our licensors’ inventions in countries outside the United States, or from selling or importing infringing products made using our and our licensors’ inventions in and into the United States or other jurisdictions. Competitors may use our and our licensors’ technologies in jurisdictions where we have not obtained patent protection or where we do not have exclusive rights under the relevant patent(s) to develop their own products and, further, may export otherwise infringing products to territories where we and our licensors have patent protection but where enforcement is not as strong as that in the United States. These infringing products may compete with our product candidates in jurisdictions where we or our licensors have no issued patents or where we do not have exclusive rights under the relevant patent(s), or our patent claims and 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 and our licensors to stop the infringement of our and our licensors’ patents or marketing of competing products in violation of our and our licensors’ proprietary rights generally. Proceedings to enforce our and our licensors’ patent rights in foreign jurisdictions could result in substantial costs and divert our attention from other aspects of our business, could put our and our licensors’ patents at risk of being invalidated or interpreted narrowly, could put our and our licensors’ patent applications at risk of not issuing, and could provoke third parties to assert claims against us or our licensors. We or our licensors may not prevail in any lawsuit that we or our licensors initiate, and even if we or our licensors are successful the damages or other remedies awarded, if any, may not be commercially meaningful.

We may become involved in lawsuits to protect or enforce our intellectual property, which could be expensive, time-consuming and unsuccessful and have a material adverse effect on the success of our business and on our stock price.

Third parties may infringe our patents, the patents of our licensors, or misappropriate or otherwise violate our or our licensors’ intellectual property rights. We and our licensors’ patent applications cannot be enforced against third parties practicing the technology claimed in such applications unless and until a patent issues from such applications, and then only to the extent the issued claims cover the technology. In the future, we or our licensors may elect to initiate legal proceedings to enforce or defend our or our licensors’ intellectual property rights, to protect our or our licensors’ trade secrets or to determine the validity or scope of intellectual property rights we own or control. Any claims that we assert against perceived infringers could also provoke these parties to assert counterclaims against us alleging that we infringe their intellectual property rights or that our intellectual property rights are invalid. In addition, third parties may initiate legal proceedings against us or our licensors to challenge the validity or scope of intellectual property rights we own or control. The proceedings can be expensive and time-consuming. Many of our or our licensors’ adversaries in these proceedings may have the ability to dedicate substantially greater resources to prosecuting these legal actions than we or our licensors can. Accordingly, despite our or our licensors’ efforts, we or our licensors may not be able to prevent third parties from infringing upon or misappropriating intellectual property rights we own or control, particularly in countries where the laws may not protect our rights as fully as in the United States. Litigation could result in substantial costs and diversion of management resources, which could harm our business and financial results. In addition, in an infringement proceeding, a court may decide that a patent owned by or licensed to us is invalid or unenforceable, in whole or in part, or may refuse to stop the other party from using the technology at issue on the grounds that our or our licensors’ patents do not cover the technology in question. An adverse result in any litigation proceeding could put one or more of our or our licensors’ patents at risk of being invalidated, held unenforceable or interpreted narrowly.

27

Interference or derivation proceedings provoked by third parties, brought by us or our licensors or collaborators, or brought by the USPTO or any non-U.S. patent authority may be necessary to determine the priority of inventions or matters of inventorship with respect to our or our licensors’ patents or patent applications. We may also become involved in other proceedings, such as reexamination or opposition proceedings,inter partesreview, post-grant review or other pre-issuance or post-grant proceedings in the USPTO or its foreign counterparts relating to our intellectual property or the intellectual property of others. An unfavorable outcome in any such proceeding could require us or our licensors to cease using the related technology and commercializing the affected product candidate, 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 or our licensors a license on commercially reasonable terms if any license is offered at all. Even if we or our licensors obtain a license, it may be non-exclusive, thereby giving our competitors access to the same technologies licensed to us or our licensors. In addition, if the breadth or strength of protection provided by our or our licensor’s patents and patent applications is threatened, it could dissuade companies from collaborating with us to license, develop or commercialize current and future product candidates. Even if we successfully defend such litigation or proceeding, we may incur substantial costs and it may distract our management and other employees. We could be found liable for monetary damages, including treble damages and attorneys’ fees, if we are found to have willfully infringed a patent.

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 shares of our common stock.

Although we have taken steps to protect our trade secrets and unpatented know-how, by entering into confidentiality agreements with third parties, and proprietary information and invention agreements with certain employees, consultants and advisors, third parties may still obtain this information or we may be unable to protect our rights.

Proprietary trade secrets and unpatented know-how are also very important to our business. We also have limited control over the protection of trade secrets used by our licensors, collaborators and suppliers. There can be no assurance that binding agreements will not be breached, that we would have adequate remedies for any breach, or that our trade secrets and unpatented know-how will not otherwise become known or be independently discovered by our competitors. If trade secrets are independently discovered, we would not be able to prevent their use. Enforcing a claim that a third party illegally obtained and is using our trade secrets or unpatented know-how is expensive and time consuming, and the outcome is unpredictable.

We may be subject to claims that our employees, consultants or independent contractors have wrongfully used or disclosed to us alleged trade secrets of their other clients or former employers. As is common in the biotechnology and pharmaceutical industry, certain of our employees were formerly employed by other biotechnology or pharmaceutical companies, including our competitors or potential competitors. Moreover, we engage the services of consultants to assist us in the development of our commercial product and product candidates, many of whom were previously employed at or may have previously been or are currently providing consulting services to, other biotechnology or pharmaceutical companies, including our competitors or potential competitors. We may be subject to claims that these employees and consultants or we have inadvertently or otherwise used or disclosed trade secrets or other proprietary information of their former employers or their former or current customers. Litigation may be necessary to defend against these types of claims. Even if we are successful in defending against any such claims, any such litigation would likely be protracted, expensive, a distraction to our management team, not viewed favorably by investors and other third parties, and may potentially result in an unfavorable outcome.

If we are unable to protect the confidentiality of our trade secrets and other proprietary information, the value of our technology could be materially adversely affected, and our business could be harmed.

In addition to seeking the protection afforded by patents, we rely on trade secret protection and confidentiality agreements to protect proprietary know-how that is not patentable or that we elect not to patent, processes for which patents are difficult to enforce, and other elements of our technology, discovery and development processes that involve proprietary know-how, information or technology that is not covered by patents. Any disclosure to or misappropriation by third parties of our confidential proprietary information could enable competitors to quickly duplicate or surpass our technological achievements, including by enabling them to develop and commercialize products substantially similar to or competitive with our current or future product candidates, thus eroding our competitive position in the market. Trade secrets can be difficult to protect. We seek to protect our proprietary technology and processes, in part, by entering into confidentiality agreements and invention assignment agreements with our employees, consultants, and outside scientific advisors, contractors and collaborators. These agreements are designed to protect our proprietary information. Although we use reasonable efforts to protect our trade secrets, our employees, consultants, contractors, or outside scientific advisors might intentionally or inadvertently disclose our trade secrets or confidential, proprietary information to competitors. In addition, competitors may otherwise gain access to our trade secrets or independently develop substantially equivalent information and techniques. If any of our confidential proprietary information were to be lawfully obtained or independently developed by a competitor, we would have no right to prevent such competitor from using that technology or information to compete with us, which could harm our competitive position.

28

Enforcing a claim that a third party illegally obtained and is using any of our trade secrets is expensive and time consuming, and the outcome is unpredictable. In addition, the laws of certain foreign countries do not protect proprietary rights such as trade secrets to the same extent or in the same manner as the laws of the United States. Misappropriation or unauthorized disclosure of our trade secrets to third parties could impair our competitive advantage in the market and could materially adversely affect our business, results of operations and financial condition.

Some intellectual property that we have in-licensed, if created as a result of government funded programs, may be subject to certain federal regulations.

Some of theagreements covering the intellectual property rights we have licensed provide that to the extent that such rights are derived from the use of U.S. government funding, those rights may therefore be subject to certain federal regulations. As a result, the U.S. government may have certain rights to intellectual property embodied in our current or future product candidates pursuant to the Bayh-Dole Act of 1980, or Bayh-Dole Act. These U.S. government rights in certain inventions developed under a government-funded program include a non-exclusive, non-transferable, irrevocable worldwide license to use inventions for any governmental purpose. In addition, the U.S. government has the right to require us to grant exclusive, partially exclusive or non-exclusive licenses to any of these inventions to a third party if it determines that: (i) adequate steps have not been taken to commercialize the invention, (ii) government action is necessary to meet public health or safety needs or (iii) government action is necessary to meet requirements for public use under federal regulations (also referred to as "march-in rights"). The U.S. government also has the right to take title to these inventions if we, or the applicable licensor, fail to disclose the invention to the government and fail to file an application to register the intellectual property within specified time limits. Intellectual property generated under a government funded program is also subject to certain reporting requirements, compliance with which may require us or the applicable licensor to expend substantial resources. In addition, the U.S. government requires that any products embodying the subject invention or produced through the use of the subject invention be manufactured substantially in the United States. The manufacturing preference requirement can be waived if the owner of the intellectual property can show that reasonable but unsuccessful efforts have been made to grant licenses on similar terms to potential licensees that would be likely to manufacture substantially in the United States or that under the circumstances domestic manufacture is not commercially feasible. This preference for U.S. manufacturers may limit our ability to contract with non-U.S. product manufacturers for products covered by such intellectual property. To the extent any of our current or future intellectual property is generated through the use of U.S. government funding, the provisions of the Bayh-Dole Act may similarly apply.

Risks Related to Commercialization of Our Current and Future Product Candidates

Our commercial success depends upon attaining significant market acceptance of our current and future product candidates, if approved, among physicians, patients, healthcare payors and cancer treatment centers.

Even if we obtain regulatory approval for any of our current or future product candidates, the products may not gain market acceptance among physicians, healthcare payors, patients or the medical community, including cancer treatment centers. Market acceptance of any product candidates for which we receive approval depends on a number of factors, including:

the efficacy and safety of such product candidates as demonstrated in clinical trials;

the clinical indications and patient populations for which the product candidate is approved;

the clinical indications and patient populations for which the product candidate is approved;

acceptance by physicians, major cancer treatment centers and patients of the drug as a safe and effective treatment;

the adoption of novel immunotherapies by physicians, hospitals and third-party payors;

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

the safety of product candidates seen in a broader patient group, including our use outside the approved indications;

any restrictions on use together with other medications;

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 our products primarilyas well as competitive products;

the development of manufacturing and distribution processes for commercial scale manufacturing for our novel WT1 peptide cancer immunotherapy product candidate;

the cost of treatment in relation to hospitals which receivealternative treatments;

the availability of coverage and adequate reimbursement for the health care services they provide to their patients from third-party payors such as Medicare, Medicaidand government authorities;

relative convenience and ease of administration; and

the effectiveness of our sales and marketing efforts and those of our collaborators.

If any of our current and future product candidates are approved but fail to achieve market acceptance among physicians, patients, healthcare payors or cancer treatment centers, we will not be able to generate significant revenues, which would compromise our ability to become profitable.

29

Even if we are able to commercialize our current or future product candidates, the products may not receive coverage and adequate reimbursement from third-party payors in the United States and in other countries in which we seek to commercialize our products, which could harm our business.

Our ability to commercialize any product successfully will depend, in part, on the extent to which coverage and adequate reimbursement for these products and related treatments will be available from third-party payors, including government health administration authorities, private health insurers and other domestic and international government programs, private insurance plans and managed care programs. Most third-party payors may deny reimbursement if they determine that a medical product was not used in accordance with cost-effective treatment methods, as determined by the third-party payor, or was used for an unapproved indication. organizations.

Third-party payors also may refuse to reimburse for experimental proceduresdetermine which medications they will cover and devices. Furthermore, because our programs areestablish reimbursement levels. A primary trend in the early stages of development, we are unable at this timehealthcare industry is cost containment. Third-party payors have attempted to determine their cost-effectivenesscontrol costs by limiting coverage and the level or methodamount of reimbursement.reimbursement for particular medications. Increasingly, the third-party payors who reimburse patients are requiring that drug companies provide them with predetermined discounts from list prices and are challenging the prices charged for medical products. IfThird-party payors may also seek additional clinical evidence, beyond the data required to obtain regulatory approval, demonstrating clinical benefit and value in specific patient populations before covering our products for those patients. We cannot be sure that coverage and adequate reimbursement will be available for any product that we commercialize and, if coverage is available, what the level of reimbursement will be. Coverage and reimbursement may impact the demand for, or the price of, any product candidate for which we areobtain regulatory approval. If reimbursement is not available or is available only at limited levels, we may not be able to chargesuccessfully commercialize any product candidate for any productswhich we develop is inadequate in light of our development and other costs, our profitability could be adversely effected.

We currently expect that any drugs we develop may need to be administered under the supervision of a physician. Under currently applicable law, drugs that are not usually self-administered may be eligible for coverage by the Medicare program if:
• They are “incidental” to a physician’s services,
• They are “reasonable and necessary” for the diagnosis or treatment of the illness or injury for which they are administered according to accepted standard of medical practice,


13

obtain regulatory approval.


• They are not excluded as immunizations, and
• They have been approved by the FDA.
There may be significant delays in obtaining insurance coverage and reimbursement for newly-approvednewly approved drugs, and insurance coverage may be more limited than the purposepurposes for which the drug is approved by the FDA.FDA or comparable foreign regulatory authorities. Moreover, eligibility for insurance coverage and reimbursement does not imply that any drug will be reimbursedpaid for in all cases or at a rate that covers our costs, including research, development, manufacture, sale and distribution. Interim paymentsreimbursement levels for new drugs, if applicable, may also not be sufficient to cover our costs and may notonly be made permanent.temporary. Reimbursement rates may vary according to the use of the drug and the clinical setting in which it is used, may be based on reimbursement levels already set for lower cost drugs and may be incorporated into existing payments for other services and may reflect budgetary constraints or imperfections in Medicare data.services. Net prices for drugs may be reduced by mandatory discounts or rebates required by government health care programs or privatethird-party payors and by any future relaxation of laws that presently restrict imports of drugs from countries where they may be sold at lower prices than in the United States. No uniform policy for coverage and reimbursement exists in the United States, and coverage and reimbursement can differ significantly from payor to payor. Third-party payors often rely upon Medicare coverage policy and payment limitations in setting their own reimbursement rates.policies, but also have their own methods and approval process apart from Medicare determinations. Our inability to promptly obtain coverage and profitable reimbursement rates from both government-funded and private payors for new drugsany approved products that we develop could have a material adverse effect on our operating results, our ability to raise capital needed to developcommercialize products and our overall financial condition.
Additionally,

Recently enacted and future legislation, including potentially unfavorable pricing regulations, may increase the difficulty and cost for us to obtain regulatory approval of and commercialize our current or future product candidates and affect the prices we may obtain.

The regulations that govern, among other things, regulatory approvals, coverage, pricing and reimbursement for new drug products vary widely from country to country. In the United States and some foreign jurisdictions, there have been a number of legislative and regulatory changes and proposed changes regarding the healthcare system that could prevent or delay regulatory approval of our current or future product candidates, restrict or regulate post-approval activities and affect our ability to successfully sell any product candidates for which we obtain regulatory approval. In the United States, the European Union, United Kingdom and other potentially significant markets for our current and future product candidates, government authorities and third-party payors are increasingly attempting to contain health care costs by limiting both coverage andlimit or regulate the levelprice of reimbursement for medical products and services. Aservices, particularly for new and innovative products and therapies, which has resulted in lower average selling prices. Legislative and regulatory proposals have also been made to expand post-approval requirements and restrict sales and promotional activities for pharmaceutical products. For example, the Centers for Medicare & Medicaid Services, or CMS, issued a final rule, effective on July 9, 2019, that requires direct-to-consumer television advertisements of prescription drugs and biological products, for which payment is available through or under Medicare or Medicaid, to include in the advertisements the Wholesale Acquisition Cost, or list price, of that drug or biological product if it is equal to or greater than $35 for a monthly supply or usual course of treatment. Prescription drugs and biological products that are in violation of these requirements will be included on a public list. Congress and the Trump administration have each indicated that it will continue to seek new legislative and/or administrative measures to control drug costs. At the state level, legislatures are increasingly passing legislation and implementing regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. We expect that additional state and federal healthcare reform measures will be adopted in the future, any of which could limit the amounts that federal and state governments will pay for healthcare products and services, which could result in reduced demand for our product candidates or additional pricing pressures. We cannot be 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 regulatory approvals of our product candidates, if any, may be.

30

Healthcare legislative measures aimed at reducing healthcare costs may have a material adverse effect on our business and results of operations.

Third-party payors, whether domestic or foreign, or governmental or commercial, are developing increasingly sophisticated methods of controlling healthcare costs. In both the United States and certain international jurisdictions, there have been a number of legislative and regulatory changes to the health care system that could impact our ability to sell our products profitably. In particular, in 2010, the Affordable Care Act, or ACA, was enacted, which, among other things, subjected biologic products to potential competition by lower-cost biosimilars, addressed a new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled, implanted or injected, increased the minimum Medicaid rebates owed by most manufacturers under the Medicaid Drug Rebate Program, extended the Medicaid Drug Rebate Program to utilization of prescriptions of individuals enrolled in Medicaid managed care organizations, subjected manufacturers to new annual fees and taxes for certain branded prescription drugs, and provided incentives to programs that increase the federal government’s comparative effectiveness research. Since its enactment, there have been judicial and Congressional challenges to certain aspects of the ACA, as well as recent efforts by the current U.S. administration to repeal or repeal and replace certain aspects of the ACA. On December 14, 2018, a U.S. District Court Judge in the Northern District of Texas, or the Texas District Court Judge, ruled that the individual mandate is a critical and inseverable feature of the ACA, and therefore, because it was repealed as a part of the Tax Act, the remaining provisions of the ACA are invalid as well. While the Texas District Court Judge, as well as the Trump Administration and CMS, have stated that the ruling will have no immediate effect, it is unclear how this decision, subsequent appeals and other efforts to repeal and replace the ACA will impact the ACA. Until there is more certainty concerning the future of the ACA, it will be difficult to predict its full impact and influence on our business.

In addition, other legislative changes have been proposed and adopted in the United States since the ACA was enacted. In August 2011, the Budget Control Act of 2011, among other things, created measures for spending reductions by Congress. A Joint Select Committee 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 of 2% per fiscal year, which went into effect in 2013, and will remain in effect through 2027 unless additional Congressional action is taken. The American Taxpayer Relief Act of 2012 further reduced Medicare payments to several providers, including hospitals and cancer treatment centers, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years.

There have been, and likely will continue to be, legislative and regulatory proposals at the foreign, federal and state levels directed at containing or lowering the cost of healthcare. We cannot predict the initiatives that may be adopted in the future. The continuing efforts of the government, insurance companies, managed care organizations and other payors of healthcare services to change contain or reduce costs of healthcare and/or impose price controls may adversely affect:

the demand for our product candidates, if we obtain regulatory approval;

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

our ability to generate revenue and achieve or maintain profitability;

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

the availability of capital.

We expect that the ACA, as well as other healthcare reform measures that may be adopted in the future, may result in additional reductions in Medicare and other healthcare funding, more rigorous coverage criteria, lower reimbursement and new payment methodologies. This could lower the price that we receive for any approved product. Any denial in coverage or reduction in reimbursement from Medicare or other government-funded programs may result in a similar denial or reduction in payments from private payors, which may prevent us from being able to generate sufficient revenue, attain profitability or commercialize our product candidates, if approved.

31

Price controls may be imposed in foreign markets, which may adversely affect our future profitability.

In some countries, particularly member states of the European Union, the pricing of prescription drugs is subject to governmental control. In these countries, pricing negotiations with governmental authorities can take considerable time after receipt of regulatory approval for a product. In addition, there can be considerable pressure by governments and other stakeholders on prices and reimbursement levels, including as part of cost containment measures. Political, economic and regulatory developments may further complicate pricing negotiations, and pricing negotiations may continue after reimbursement has been obtained. Reference pricing used by various European Union member states and parallel distribution, or arbitrage between low-priced and high-priced member states, can further reduce prices. In some countries, we or our collaborators may be required to conduct a clinical trial or other studies that compare the cost-effectiveness of our product candidates to other available therapies in order to obtain or maintain reimbursement or pricing approval. Publication of discounts by third-party payors or authorities may lead to further pressure on the prices or reimbursement levels within the country of publication and other countries. If reimbursement of our products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, our business could be adversely affected.

Risks Related to Healthcare Compliance Regulations

Our relationships with customers and third-party payors will be subject to applicable anti-kickback, fraud and abuse and other healthcare laws and regulations, which could expose us to criminal sanctions, civil penalties, contractual damages, reputational harm and diminished profits and future earnings. If we or they are unable to comply with these provisions, we may become subject to civil and criminal investigations and proceedings that could have a material adverse effect on our business, financial condition and prospects.

Healthcare providers, physicians and third-party payors will play a primary role in the recommendation and prescription of any product candidates for which we obtain regulatory approval. Our current and future arrangements with healthcare providers, healthcare entities, third-party payors and customers may expose us to broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain the business or financial arrangements and relationships through which we research, develop and will market, sell and distribute our products. As a pharmaceutical company, even though we do not and will not control referrals of healthcare services or bill directly to Medicare, Medicaid or other third-party payors, federal and state healthcare laws and regulations pertaining to fraud and abuse and patients’ rights are applicable to our business. Restrictions under applicable federal and state healthcare laws and regulations that may affect our ability to operate include the following:

the federal healthcare Anti-Kickback Statute which prohibits, among other things, individuals and entities from knowingly and willfully soliciting, offering, receiving or providing remuneration, directly or indirectly, overtly or covertly, in cash or in kind, to induce or reward, or in return for, 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 a federal healthcare program such as Medicare and Medicaid;

federal civil and criminal false claims laws, including the federal False Claims Act that can be enforced through civil whistleblower or qui tam actions, and civil monetary penalty laws, prohibit individuals or entities from knowingly presenting, or causing to be presented, to the federal government, including the Medicare and Medicaid programs, claims for payment or approval that are false or fraudulent or making a false statement to avoid, decrease or conceal an obligation to pay money to the federal government;

the federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, which imposes criminal and civil liability for executing a scheme to defraud any healthcare benefit program and also created federal criminal laws that prohibit knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false statements in connection with the delivery of or payment for healthcare benefits, items or services, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009, or HITECH, which imposes obligations, including mandatory contractual terms, with respect to safeguarding the privacy, security and transmission of individually identifiable health information on entities subject to the law, such as certain healthcare providers, health plans, and healthcare clearinghouses, known as covered entities, and their respective business associates that perform services for them that involve the creation, use, maintenance or disclosure of, individually identifiable health information;

the federal physician sunshine requirements under the ACA which requires certain manufacturers of drugs, devices, biologics and medical supplies, with certain exceptions, to report annually to HHS information related to payments and other transfers of value to physicians, other healthcare providers, and teaching hospitals, and ownership and investment interests held by physicians and other healthcare providers and their immediate family members and applicable group purchasing organizations;

32

analogous state and foreign laws and regulations, such as state anti-kickback and false claims laws, which may apply to sales or marketing arrangements and claims involving healthcare items or services reimbursed by non-governmental third-party payors, including private insurers; some state laws which require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government and may require drug manufacturers to report information related to payments and other transfers of value to physicians and other healthcare providers, marketing expenditures or pricing information; and certain state and local laws which require the registration of pharmaceutical sales representatives; and

state and foreign laws govern the privacy and security of health information in specified circumstances, many of which differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts.

Efforts to ensure that our business arrangements with third parties will comply with applicable healthcare laws and regulations will involve substantial costs. It is possible that governmental authorities will conclude that our business practices may not comply with current or future statutes, regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations. If our operations are found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be subject to significant civil, criminal and administrative penalties, damages, fines, imprisonment, disgorgement, exclusion from government funded healthcare programs, such as Medicare and Medicaid, integrity oversight and reporting obligations, and the curtailment or restructuring of our operations. If any physicians or other healthcare providers or entities with whom we expect to do business are found to not be in compliance with applicable laws, they may be subject to criminal, civil or administrative sanctions, including exclusions from government funded healthcare programs.

Our employees may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements, which could cause significant liability for us and harm our reputation.

We are exposed to the risk of employee fraud or other misconduct, including intentional failures to comply with FDA regulations or similar regulations of comparable foreign regulatory authorities, provide accurate information to the FDA or comparable foreign regulatory authorities, comply with manufacturing standards we have established, comply with federal and state healthcare fraud and abuse laws and regulations and similar laws and regulations established and enforced by comparable foreign regulatory authorities, report financial information or data accurately or disclose unauthorized activities to us. Employee misconduct 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. It is not always possible to identify and deter employee 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 ourselves or asserting our rights, those actions could have a significant impact on our business and results of operations, including the imposition of significant civil, criminal and administrative penalties, damages, fines, imprisonment, exclusion from government funded healthcare programs, such as Medicare and Medicaid, and integrity oversight and reporting obligations.

We have been involved in multiple legal and governmental proceedings, and may in the future be involved in proceedings, relating to the commercial activities of our predecessor that could adversely affect our financial condition and our business.

Our predecessor company, Galena, was involved in multiple legal and governmental proceedings, including stockholder class actions, both state and federal, some of which are ongoing. These legal and governmental actions (the “Galena Legacy Matters”), included allegations relating to federal securities law violations, claims under the False Claims Act and Anti-Kickback Statute, claims regarding breaches of contract, and other stockholder allegations, including claims of breaches of fiduciary duty by our former directors, and fentanyl related litigation.

In December 2015, we announced we had received a subpoena from the U.S. Attorney’s Office for the District of New Jersey, or the USAO NJ, requesting the production of a broad range of documents pertaining to marketing and promotional practices related to Abstral, a fentanyl or synthetic opioid product, that we sold to Sentynl Therapeutics Inc., or Sentynl, in November 2015. In January 2016, we announced that the U.S. Attorney’s Office of New Jersey, of USAO NJ and the Department of Justice, or DOJ, were conducting a criminal and civil investigation of us, which came to involve criminal investigations with respect to possibly one or more then-current and/or former employees. On September 8, 2017, the DOJ announced a civil settlement agreement with our company regarding certain of the marketing and promotional practices at issue in the USAO NJ and DOJ’s investigation. The settlement involved a civil resolution agreement and a civil payment of approximately $7.551 million, plus interest accrued since the date of reaching an agreement in principle in return for a release of federal government claims against our company in connection with the covered conduct in investigation. The civil payment was fully paid by us on or about December 29, 2017. The settlement did not include releases of criminal claims by the USAO NJ and DOJ or claims by state agencies or administrative claims by the Department of Health and Human Services, or HHS, but each of these government authorities indicated that they had no present intention to pursue claims in connection with the investigation. A qui tam action had been filed against us and others as described in our settlement agreement with DOJ and USAO NJ. As set forth in that settlement agreement, for a release of all claims against us and our former officers and directors and dismissal with prejudice of the qui tam lawsuit, the relator received a portion of the $7.551 million payment to the federal government. As a result of the payment of the settlement amount, the federal government and the relator filed a stipulation of dismissal with prejudice as to their claims against us in the qui tam lawsuit. In a separate settlement agreement, we paid $0.3 million in cash to the relator’s counsel for the statutorily mandated attorney’s fees.

33

We also received a subpoena from the U.S. Attorney’s Office for the Southern District of New York, or USAO SDNY, in February 2018, seeking documents related to specific prescribing physicians for Abstral who have been subsequently indicted, to which we responded. To our knowledge, we are not a target or subject of that investigation and have had no further interaction with the USAO SDNY with regard to the matter after responding to the subpoena.

A federal investigation led by the U.S. Attorney’s Office for the Southern District of Alabama, or the SDAL, of two of the high-prescribing physicians for Abstral (fentanyl) sublingual tablets resulted in the criminal prosecution of the two physicians for alleged violations of the federal False Claims Act and other federal statutes. On April 28, 2016, a second superseding indictment was filed in the criminal case, which added additional information about the defendant physicians and provided information regarding the facts and circumstances involving a rebate agreement between us and the defendant physicians’ pharmacy as well as their ownership of our common stock. The criminal trial, which began on January 4, 2017, concluded with a jury verdict on February 23, 2017 finding these physicians guilty on 19 of 20 counts. In May 2017, one physician was sentenced to 20 years in prison, and the other physician was sentenced to 21 years in prison. At the end of the SDAL case, SDAL dismissed count 18 of the indictment charging that the physicians conspired, through the C&R Pharmacy, to receive illegal kickbacks in exchange for prescribing Abstral. To our knowledge, we were not a target or subject of that investigation.

There continues to be significant litigation and governmental activity generally in the fentanyl and opioid area, and this activity is expected to continue and may increase in the future. We cannot assure you we will not become subject to additional significant legal or governmental proceedings relating to Galena’s former Abstral business in the future. Moreover, in addition to these ongoing and prior matters, we may be exposed to claims, or other legal or governmental actions in the future relating to violations of the False Claims Act, Anti-Kickback Statute, the Affordable Care Act, or any other applicable state or federal statutes or regulations, and thereby be subject to penalties, such as civil and criminal penalties, damages, fines, or an administrative action of exclusion from government health care reimbursement programs.

There can be no assurance that we will not be exposed to other liabilities or risks, including potential liabilities and risks not currently known to us, resulting from the prior operations of Galena. We can make no assurances as to the time or resources that will need to be devoted to the Galena Legacy Matters, or any new or future matters resulting from the prior operations of Galena or their outcome, or the impact, if any, that these matters or any resulting legal or governmental proceedings may have on our business or financial condition but any further action in respect of any such matter by a governmental agency could have a material adverse effect on our results of operation and our business and prospects.

Product liability lawsuits against us could cause us to incur substantial liabilities and to limit commercialization of any products that we may develop.

We face an inherent risk of product liability exposure related to the testing of our current or future product candidates in human clinical trials and will face an even greater risk if we commercially sell any products that we may develop. Product liability claims may be brought against us by subjects enrolled in our clinical trials, patients, healthcare providers or others using, administering or selling our products. If we cannot successfully defend ourselves against claims that our product candidates or products caused injuries, we could incur substantial liabilities. Regardless of merit or eventual outcome, liability claims may result in:

decreased demand for any product candidates or products that we may develop;

termination of clinical trial sites or entire clinical trial programs;

injury to our reputation and significant negative media attention;

withdrawal of clinical trial participants;

significant costs to defend the related litigation;

34

substantial monetary awards to trial subjects or patients;

loss of revenue;

diversion of management and scientific resources from our business operations; and

the inability to commercialize any products that we may develop.

We currently hold product liability insurance coverage at a level that we believe is customary for similarly situated companies and adequate to provide us with insurance coverage for foreseeable risks, but which may not be adequate to cover all liabilities that we may incur. Insurance coverage is increasingly expensive. We may not be able to maintain insurance coverage at a reasonable cost or in an amount adequate to satisfy any liability that may arise. We intend to expand our insurance coverage for products to include the sale of commercial products if we obtain regulatory approval for our product candidates in development, but we may be unable to obtain commercially reasonable product liability insurance for any products that receive regulatory approval. Large judgments have been awarded in class action lawsuits based on drugs that had unanticipated side effects. A successful product liability claim or series of claims brought against us, particularly if judgments exceed our insurance coverage, could decrease our cash and adversely affect our business.

We face product liability exposure from prior sales of Abstral and Zuplenz (ondansetron) and, if successful claims are brought against us, we may incur substantial liability if our insurance coverage for those claims is inadequate.

Because we previously sold Abstral and Zuplenz (ondansetron), an anti-emetic, oral soluble film for chemotherapy-induced nausea we are exposed to possible product liability claims. In November 2015, Galena sold the rights to Abstral to Sentynl, and in December 2015, Galena sold the rights to Zuplenz to Midatech Pharma, PLC, or Midatech. Under the respective asset purchase agreements with Sentynl and Midatech, our future obligations under our former agreements with Orexo AB and MonoSol Rx have been assumed by Sentynl and Midatech, respectively, except that we will continue to be responsible for chargebacks, rebates, patient assistance and certain other product distribution channel liabilities related to Abstral and Zuplenz for a specified period of time post-closing. We are also required to indemnify Sentynl and Midatech for contractual or product liability claims arising from actions occurring prior to the sale date. With respect to Zuplenz, we will continue to be responsible for any downstream returns from end user customers or returns from wholesalers from inventory existing as of December 24, 2015 that was sold by us prior to December 24, 2015.

We do not consider our responsibilities with regard to Sentynl and Midatech to be material, but if substantial unknown liabilities were to arise, it could have a material adverse effect on our financial condition. If we cannot successfully defend ourselves against product liability claims we could incur substantial liabilities, regardless of merit or eventual outcome. A successful product liability claim or series of claims brought against us could cause our stock price to decline and, if judgments exceed our insurance coverage, could decrease our cash and have a material adverse effect on our business, results of operations, financial condition and prospects.

Risks Related to our Business Operations

If we fail to maintain an effective system of internal control over financial reporting, we may not be able to accurately report our financial results or prevent fraud. As a result, stockholders could lose confidence in our financial and other public reports, which would harm our business, the trading price of our common stock and our ability to raise additional capital in the future.

Effective internal controls over financial reporting are necessary for us to provide reliable financial reports and, together with adequate disclosure controls and procedures, are designed to prevent fraud. Any failure to implement required new or improved controls, or difficulties encountered in their implementation, could cause us to fail to meet our reporting obligations. Ineffective internal controls could also cause investors to lose confidence in our reported financial information, which could have a negative effect on the trading price of Common Stock, and which could impact our ability to raise capital in the future. In addition, any future testing by us conducted in connection with Section 404 of the Sarbanes-Oxley Act of 2002, as amended (“SOX”), or any required subsequent testing by our independent registered public accounting firm, may reveal deficiencies in our internal controls over financial reporting that are deemed to be material weaknesses or that may require prospective or retroactive changes to our consolidated financial statements or identify other areas for further attention or improvement.

We are required, pursuant to Section 404 of SOX, to furnish a report by management on, among other things, the effectiveness of our internal control over financial reporting as of December 31, 2018. However, our independent registered public accounting firm is not required to attest to the effectiveness of our internal control over financial reporting pursuant to Section 404. Under the supervision and with the participation of our Chief Executive Officer and Vice President Finance and Interim Principal Accounting Officer, our management conducted an evaluation of the effectiveness of our internal control over financial reporting based on the guidelines in the Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that evaluation, our management concluded that our internal control over financial reporting was effective as of December 31, 2018. An independent assessment of the effectiveness of our internal controls could detect problems that our management’s assessment might not. Undetected material weaknesses in our internal controls could lead to financial statement restatements and require us to incur the expense of remediation.

35

We face substantial competition, which may result in others discovering, developing or commercializing products before or more successfully than we do.

We face competition from numerous pharmaceutical and biotechnology enterprises, as well as from academic institutions, government agencies and private and public research institutions for our current product candidates. Our commercial opportunities will be reduced or eliminated if our competitors develop and commercialize products that are safer, more effective, have fewer side effects or are less expensive than any products that we may develop. Competition could result in reduced sales and pricing pressure on our current or future product candidates, if approved, which in turn would reduce our ability to generate meaningful revenues and have a negative impact on our results of operations. In addition, significant delays in the development of our product candidates could allow our competitors to bring products to market before we do and impair our ability to commercialize our product candidates. The biotechnology industry, including the cancer immunotherapy market, is intensely competitive and involves a high degree of risk. We compete with other companies that have far greater experience and financial, research and technical resources than us. Potential competitors in the United States and worldwide are numerous and include pharmaceutical and biotechnology companies, educational institutions and research foundations, many of which have substantially greater capital resources, marketing experience, research and development staffs and facilities than ours. Some of our competitors may develop and commercialize products that compete directly with those incorporating our technology or may introduce products to market earlier than our products or on a more cost-effective basis. In addition, our technology may be subject to competition from other major healthcare marketstechnology or methods developed using techniques other than those developed by traditional biotechnology methods. Our competitors compete with us in recruiting and retaining qualified scientific and management personnel as well as in acquiring technologies complementary to our technology. Our company and our collaborators may face competition with respect to product efficacy and safety, ease of use and adaptability to various modes of administration, acceptance by physicians, the timing and scope of regulatory approvals, availability of resources, reimbursement coverage, price and patent position, including the potentially dominant patent positions of others. An inability to successfully complete our product development or commercializing those product candidates could result in our having limited prospects for establishing market share or generating revenue from our technology.

There are several agents in clinical development in similar settings to our planned Phase 3 AML clinical development program for GPS. The most advanced of these products is oral Vidaza (azacytidine) (also known as CC-486), under development by Celgene Corporation, which is anticipated to report results from a registration-enabling Phase 3 study (named the QUAZAR or CC-486-AML-001 study) by the end of 2019. There are several of other investigational immunotherapies advancing through Phase 2 and Phase 3 trials for target indications that we believe are also potential target indications for GPS. If these or other therapies are successful in their development, it could negatively impact our ability to enroll our clinical trials and could negatively impact the commercial potential of GPS.

We are also planning a clinical development program in combination with cancer checkpoint inhibitors. This is a highly competitive field, with hundreds of such combination trials with various checkpoint inhibitors ongoing. If one or more of these combinations produce positive results in indications that we believe are targets for GPS (either in combination or in stand-alone administration) this could increase the difficulty for us to conduct our trials and could negatively impact our path to regulatory approval and our ability to successfully commercialize our products.

Many of our competitors or potential competitors have been proposed in recent years. These proposals have included prescription drug benefit legislation recently enactedsignificantly greater established presence in the United Statesmarket, financial resources and healthcare reform legislation enacted by certain states. Levels of reimbursementexpertise in research and development, manufacturing, preclinical testing, conducting clinical trials, obtaining regulatory approvals and marketing approved products than we do, and as a result may decreasehave a competitive advantage over us. Mergers and acquisitions in the future,pharmaceutical and future legislation, regulation or reimbursement policies of third-party payorsbiotechnology industries may adversely affect the demand for and price levelsresult in even more resources being concentrated among a smaller number of our competitors. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies. These third parties compete with us in recruiting and retaining qualified scientific and management personnel, establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies and technology licenses complementary to our programs or potentially advantageous to our business.

As a result of these factors, these competitors may obtain regulatory approval of their products before we are able to obtain patent protection or other intellectual property rights, which will limit our ability to develop or commercialize our current or future product candidates. Our competitors may also develop drugs that are safer, more effective, more widely used and cheaper than ours, and may also be more successful than us in manufacturing and marketing their products. IfThese appreciable advantages could render our customers are not reimbursed for our products, they may reduceproduct candidates obsolete or discontinue purchasesnoncompetitive before we can recover the expenses of development and commercialization.

36

We enter into various contracts in the normal course of our products,business in which we may be required to indemnify the other party to the contract under certain specific scenarios. In the event we have to perform under these indemnification provisions, it could have a material adverse effect on our business, financial condition and results of operations.

Some states

In the normal course of business, we periodically enter into academic, commercial, service, collaboration, licensing, consulting and localitiesother agreements that contain indemnification provisions. With respect to our academic and other research agreements, we typically agree to indemnify the institution and related parties from losses arising from claims relating to the products, processes or services made, used, sold or performed pursuant to the agreements for which we have established drug importation programssecured licenses, and from claims arising from our or our sublicensees’ exercise of rights under the agreement. With respect to our collaboration agreements, we indemnify our collaborators from any third-party product liability claims that could result from the production, use or consumption of the product, as well as for alleged infringements of any patent or other intellectual property right by a third party. With respect to consultants, we indemnify them from claims arising from the good faith performance of their citizens, and federal drug import legislation has been introduced in Congress. The Medicare Prescription Drug Plan legislation, which became law in December 2003, required the Secretary of Health and Human Services to promulgate regulations for drug reimportation from Canada into the United Statesservices.

Should our obligations under some circumstances, including when the drugs are sold at a lower price than in the United States. The Secretary, however, retained the discretion not to implement a drug reimportation planan indemnification provision exceed applicable insurance coverage or if he finds that the benefits do not outweigh the costs, and has so far declined to approve a reimportation plan. Proponents of drug reimportation may attempt to pass legislation that would directly allow reimportation under certain circumstances. Legislation or regulations allowing the reimportation of drugs, if enacted, could decrease the price we receivewere denied insurance coverage for any products thatclaim, our business, financial condition and results of operations could be adversely affected. Similarly, if we may developare relying on a collaborator to indemnify us and the collaborator is denied insurance coverage for the claim or the indemnification obligation exceeds the applicable insurance coverage, and if the collaborator does not have other assets available to indemnify us, our business, financial condition and results of operations could be adversely affected.

Significant disruptions of information technology systems, computer system failures or breaches of information security could adversely affect our business.

We rely to a large extent upon sophisticated information technology systems to operate our business. In the ordinary course of business, we collect, store and transmit large amounts of confidential information (including, but not limited to, personal information and intellectual property). We also have outsourced significant elements of our operations to third parties, including significant elements of our information technology infrastructure and, as a result, we are managing many independent vendor relationships with third parties who may or could have access to our confidential information. The size and complexity of our information technology and information security systems, and those of our third-party vendors with whom we contract (and the large amounts of confidential information that is present on them), make such systems potentially vulnerable to service interruptions or to security breaches from inadvertent or intentional actions by our employees or vendors, or from malicious attacks by third parties. Such attacks are of ever-increasing levels of sophistication and are made by groups and individuals with a wide range of motives (including, but not limited to, industrial espionage and market manipulation) and expertise. While we have invested significantly in the protection of data and information technology, there can be no assurance that our efforts will prevent service interruptions or security breaches.

Our internal computer systems, and those of MSK, our CROs, our CMOs, and other business vendors on which we rely, are vulnerable to damage from computer viruses, unauthorized access, natural disasters, fire, terrorism, war and telecommunication and electrical failures. We exercise little or no control over these third parties, which increases our vulnerability to problems with their systems. If such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our drug development programs. Any interruption or breach in our systems could adversely affect our business operations and/or result in the loss of critical or sensitive confidential information or intellectual property, and could result in financial, legal, business and reputational harm to us or allow third parties to gain material, inside information that they use to trade in our securities. For example, the loss of clinical trial data from completed or ongoing clinical trials could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. To the extent that any disruption or security breach results in a loss of or damage to our data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur liability, the further development of our current and future revenuesproduct candidates could be delayed and prospectsour business could be otherwise adversely affected.

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

As of June 6, 2019, we had 6 full-time employees. Depending on the outcome of our review of our strategic alternatives, we may need to grow the size of our organization in order to support our continued development and potential commercialization of our product candidates. As our development and commercialization plans and strategies continue to develop, our need for profitability.additional managerial, operational, manufacturing, sales, marketing, financial and other resources may increase. Our management, personnel and systems currently in place may not be adequate to support this future growth. Future growth would impose significant added responsibilities on members of management, including:  

37

managing our clinical trials effectively;

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

managing our internal development efforts effectively while complying with our contractual obligations to licensors, licensees, contractors and other third parties;

improving our managerial, development, operational, information technology, and finance systems; and

expanding our facilities.

If our operations expand, we will also need to manage additional relationships with various strategic partners, suppliers and other third parties. Our future financial performance and our ability to commercialize our product candidates and to compete effectively will depend, in part, on our ability to manage any future growth effectively, as well as our ability to develop a sales and marketing force when appropriate for our company. To that end, we must be able to manage our development efforts and preclinical studies and clinical trials effectively and hire, train and integrate additional management, research and development, manufacturing, administrative and sales and marketing personnel. The failure to accomplish any of these tasks could prevent us from successfully growing our company.

The requirements of being a public company may strain our resources, divert management’s attention and affect our ability to attract and retain qualified board members.

As a public company, we are subject to the reporting requirements of the Exchange Act, the Sarbanes-Oxley Act, the Dodd-Frank Act, the listing requirements of Nasdaq and other applicable securities rules and regulations. Compliance with these rules and regulations has increased, and will likely continue to increase, our legal and financial compliance costs, make some activities more difficult, time-consuming or costly, and place significant strain on our personnel, systems and resources. In addition, changing laws, regulations and standards relating to corporate governance and public disclosure are creating uncertainty for public companies, increasing legal and financial compliance costs and making some activities more time consuming. These laws, regulations and standards are subject to varying interpretations, in many cases due to their lack of specificity, and, as a result, their application in practice may evolve over time. This could result in continuing uncertainty regarding compliance matters, higher administrative expenses and a diversion of management’s time and attention. Further, if our compliance efforts differ from the activities intended by regulatory or governing bodies due to ambiguities related to practice, regulatory authorities may initiate legal proceedings against us and our business may be harmed. Being a public company that is subject to these rules and regulations also makes it more expensive for us to obtain and retain director and officer liability insurance, and we may in the future be required to accept reduced coverage or incur substantially higher costs to obtain or retain adequate coverage. These factors could also make it more difficult for us to attract and retain qualified members of our board of directors and qualified executive officers.

Our common stock may be delisted from the Nasdaq Capital Market which could negatively impact the price of our common stock, liquidity and our ability to access the capital markets.

The listing standards of the Nasdaq Capital Market provide that a company, in order to qualify for continued listing, must maintain a minimum stock price of $1.00 and satisfy standards relative to minimum stockholders’ equity, minimum market value of publicly held shares and various additional requirements. If we fail to comply with all listing standards applicable to issuers listed on the Nasdaq Capital Market, our common stock may be delisted. If our common stock is delisted, it could reduce the price of our common stock and the levels of liquidity available to our stockholders. In addition, the delisting of our common stock could materially adversely affect our access to the capital markets and any limitation on liquidity or reduction in the price of our common stock could materially adversely affect our ability to raise capital. Delisting from the Nasdaq Capital Market could also result in other negative consequences, including the potential loss of confidence by suppliers, customers and employees, the loss of institutional investor interest and fewer business development opportunities.

As previously reported, on May 31, 2019, we received a letter from Nasdaq indicating that, based upon the closing bid price of our common stock for the last 30 consecutive business days, we did not meet the minimum bid price of $1.00 per share required for continued listing on the Nasdaq Capital Market pursuant to Minimum Bid Price Rule. We have been provided an initial period of 180 calendar days, or until November 27, 2019, to regain compliance with the Minimum Bid Price Rule. The letter also indicated that if at any time before November 27, 2019 the closing bid price for our common stock is at least $1.00 for a minimum of ten consecutive business days, Nasdaq will provide written notification to the company that it complies with the Minimum Bid Price Rule. If we do not regain compliance with the Minimum Bid Price Rule by November 27, 2019, we may be eligible for a second compliance period of 180 calendar days, provided that we meet the continued listing requirement for market value of publicly held shares and all other initial listing standards for the Nasdaq Capital Market, with the exception of the bid price requirement, and notify Nasdaq of our intention to cure the deficiency during such second compliance period, including by effecting a reverse stock split, if necessary. If we do not regain compliance with the Minimum Bid Price Rule by November 27, 2019 and are not eligible for a second compliance period at that time, Nasdaq will provide written notification to us that our common stock may be delisted. At that time, we may appeal Nasdaq’s delisting determination to a Nasdaq hearings panel. If we timely appeal, our common stock would remain listed pending the panel’s decision. There can be no assurance that, if we do appeal the delisting determination by Nasdaq to the panel, such appeal would be successful.

We have in the past, and may in the future, become involved in securities class action litigation that could divert management’s attention and harm our business, and insurance coverage may not be sufficient to cover all costs and damages.

In the past, securities class action or stockholder derivative litigation often follows certain significant business transactions, such as the sale of a business division or announcement of a merger. Additionally, securities class action or stockholder derivative litigation has become common in our industry following the announcement of negative data or adverse events. We have in the past, and may in the future, become involved in this type of litigation. Litigation often is expensive and diverts management’s attention and resources, which could adversely affect the continuing company’s business.

Our future success depends on our ability to retain our executive officers and to attract, retain and motivate qualified personnel.

We are highly dependent upon our personnel, including Dr. Angelos M. Stergiou (M.D., Sc.D. h.c.), our President and Chief Executive Officer, and member of our board of directors. Our employment agreement with Dr. Stergiou does not prevent him from terminating his employment with us at any time. The loss of Dr. Stergiou’s services could impede the achievement of our research, development and commercialization objectives. We have not obtained, do not own, nor are we the beneficiary of, key-person life insurance.

Governance changes, becoming subject to enhanced regulatory requirements and increased responsibilities associated with becoming a public company may influence our management personnel and our employees to terminate their employment with us. To enhance our ability to retain our executive management personnel, we have entered into retention agreements with certain executive officers and may find it beneficial to enter into additional retention agreements with other key personnel in the future, potentially increasing payroll and operating expenses.

38

Our future growth and success depend on our ability to recruit, retain, manage and motivate our employees. The loss of any member of our senior management team or the inability to hire or retain experienced management personnel could compromise our ability to execute our business plan and harm our operating results. Because of the specialized scientific and managerial nature of our business, we rely heavily on our ability to attract and retain qualified scientific, technical and managerial personnel. The competition for qualified personnel in the pharmaceutical field is intense and as a result, we may be unable to continue to attract and retain qualified personnel we may not be able to design, develop, market or sell our products or successfully managenecessary for the development of our business.

We are highly dependent on

If we and our named executive officers and SAB members. The continued service of our named executive officers and SAB members is criticalthird-party manufacturers fail to our success. We have entered into employment agreements with our named executive officers, all of which can be terminated by such persons on short or no notice. The loss of any of our named executive officers or SAB members, or our inability to identify, attract, retain and integrate additional qualified key personnel, could make it difficult for us to manage our business successfully and achieve our business objectives.

Competition for skilled research, product development, regulatory and technical personnel also is intense, and we may not be able to recruit and retain the personnel we need. The loss of the services of any key research, product development, regulatory, and technical personnel, or our inability to hire new personnel with the requisite skills, could restrict our ability to develop our product candidates.


14


We use biological and hazardous materials and if we do not comply with laws regulating the protection of the environment andenvironmental, health and human safety our business could be adversely affected.
Our research and development activities involve the controlled use of potentially harmful biological materials as well as hazardous materials, chemicals and various radioactive compounds. We cannot completely eliminate the risk of accidental contamination or injury; we could be held liable for any damages that result, and any liability could exceed our resources. We are subject to federal, state and local laws and regulations, governingwe could become subject to fines or penalties or incur costs that could have a material adverse effect on the use, storage, handlingsuccess of our business.

We and disposal of these materials and specific waste products. Weour third-party manufacturers 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, use, storage, treatment and disposal of biohazardoushazardous materials and wastes. Our operations involve the use of hazardous and flammable materials, including chemicals and biological materials. The costOur operations also produce hazardous waste products. We generally contract with third parties for the disposal of compliance with these lawsmaterials and regulationswastes. We cannot eliminate the risk of contamination or injury from these materials. In the event of contamination or injury resulting from us or our third-party manufacturers’ use of hazardous materials, we could be held liable for any resulting damages, and any liability could exceed our resources. We also could incur significant costs associated with civil or criminal fines and may adversely affect capital expenditures to the extentpenalties.

Although we are required to procure expensive capital equipment to meet regulatory requirements.

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. We maintain workers’ compensation insurance to cover us forthe costs and expenses we may incur due to injuries to our employees resulting from the use of these materials. The limits of our workers’ compensationhazardous materials with a policy limit that we believe is customary for similarly situated companies and adequate to provide us with insurance are mandated by state law, and our workers’ compensation liability is capped at these state-mandated limits.coverage for foreseeable risks, this insurance may not provide adequate coverage against potential liabilities. We do not maintain insurance for environmental liability or toxic tort claims that may be asserted against us in connection with our storage or disposal of biological or hazardous or radioactive materials. Additional federal, state and local laws and regulations affecting our operations may be adopted in the future. We

In addition, we may incur substantial costs in order to comply with current or future environmental, health and safety laws and regulations. These current or future laws and regulations may impair our research, development or production efforts. Failure to comply with these laws and regulations also may result in substantial fines, penalties or penalties if we violate any of these laws or regulations.

Risks Relating to a Publicly Traded Company and Future Financing Needs
You may have difficulty evaluatingother sanctions, which could adversely affect our business, because we have limited history and our historical financial information may not be representative of our future results.
The historical financial information included in this prospectus does not necessarily reflect the financial condition, results of operations and prospects.

Risks Relating to Ownership of Our Common Stock

We need to secure additional capital which may cause dilution to you and our existing stockholders, provide subsequent investors with rights and preference that are senior to yours, restrict our operations or cash flows that we would have achieved as a separate company during the periods presented or those that we will achieve in the future. Priorrequire us to the contribution of our RNAi assets from CytRx, our RNAi research and development activities were conducted by CytRx as part of its broader operations, rather than as an independent division or subsidiary, and were primarily conducted through sponsored research arrangements rather than through internal activities. CytRx also performed various corporate functions relatingrelinquish rights to our business, as discussed above. Our historical financial information reflects allocations of indirect expenses from CytRx for these and similar functions. We believe that these allocations are comparable to the expenses we would have incurred had we operated as a separate company, although we may incur higher expenses as a separate company.

We have limited operating experience and may not be able to effectively operate.
We are a discovery-stage company with limited operating history. We will focus solely on developing and, if we obtain regulatory approval for our product candidates commercializing therapeutic products based upon RNAi technologies, and there is no assurance that we will be ableon unfavorable terms to successfully implement our business plan. While our management collectively possesses substantial business experience, there is no assurance that we will be able to manage our business effectively, or that we will be able to identify, hire and retain any needed additional management or scientific personnel to develop and implement our product development plans, obtain third-party contracts or any needed financing, or achieve the other components of our business plan.
The obligations associated with being an independent public company require significant resources and management attention.us.
As a publicly traded company, we are subject to the reporting requirements of the U.S. Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the Sarbanes-Oxley Act of 2002. In addition,


15


the Exchange Act requires that we file annual, quarterly and current reports. Our failure to prepare and disclose this information in a timely manner could subject us to penalties under federal securities laws, expose us to lawsuits and restrict our ability to access financing. The Sarbanes-Oxley Act requires that we, among other things, establish and maintain effective internal controls and procedures for financial reporting and we are presently evaluating our existing internal controls in light of the standards adopted by the Public Company Accounting Oversight Board. In conjunction with BDO Seidman, LLP, our independent registered public accounting firm, we have begun to evaluate our internal control procedures and our auditors have recently identified certain material weaknesses in our internal controls related to the timely reconciliation of our ledgers and preparation and review of our stock option expense calculations. While we do not believe this will be an ongoing problem for us, we are making every effort to ensure that all such functions going forward will be executed in a full and timely manner, and that our internal controls and procedures will be in compliance with the PCAOB standards. However, we cannot provide assurances that these efforts will remedy all of the noted material weaknesses that we have inherited from CytRx, or any other potential material weaknesses that have yet to be identified. It is possible that we or our independent registered public accounting firm may identify additional significant deficiencies or material weaknesses in our internal control over financial reporting in the future. Any failure or difficulties in implementing and maintaining these controls could cause us to fail to meet the periodic reporting obligations or result in material misstatements in our financial statements.
Section 404 of the Sarbanes-Oxley Act requires annual management assessments of the effectiveness of our internal control over financial reporting, starting with our 2008 annual report that we will file with the SEC in 2009. In preparation for this, we may identify deficiencies that we may not be able to remediate in time to meet the deadline for compliance with the requirements of Section 404. Our failure to satisfy the requirements of Section 404 on a timely basis could result in the loss of investor confidence in the reliability of our financial statements, which in turn could have a material adverse effect on our business and our common stock.
We may not be able to obtain sufficient financing, and may not be able to develop our product candidates.
We believe that we have sufficient working capital to fund our current activities through the second half of 2009. We will need to incur debt or issue equityraise additional capital in the future in order to continue to fund our operations, as well as to make acquisitions and other investments. We cannot assure you that debt or equity financing will be available to us on acceptable terms or at all. If we cannot or are limited in the ability to incur debt, issue equity or enter in strategic collaborations, we may be unable to fund discovery and development of our product candidates, address gaps in our product offerings or improve our technology.
We anticipate that we will need to raise substantial amounts of money to fund a variety of future activities integral to the development of our business, which may include but are not limited to the following:
• to conduct research and development to successfully develop our RNAi technologies,
• to obtain regulatory approval for our products,
• to file and prosecute patent applications and to defend and assess patents to protect our technologies,
• to retain qualified employees, particularly in light of intense competition for qualified scientists,
• to manufacture products ourselves or through third parties,
• to market our products, either through building our own sales and distribution capabilities or relying on third parties, and
• to acquire new technologies, licenses or products.
We cannot assure you that any needed financing will be available to us on acceptable terms or at all. If we cannot obtain additional financing in the future, our operations may be restricted and we may ultimately be unable to continue to develop and potentially commercialize our product candidates.


16


Future financing may be obtained through, and future development efforts may be paid for by, the issuance of debt or equity, which may have an adverse effect on our stockholders or may otherwise adversely affect our business.
future. If we raise funds through the issuance of debt or equity, any debt securities or preferred stock issued will have rights, preferences and privileges senior to those of holders of our common stock in the event of a liquidation. In such event, there is a possibility that once all senior claims are settled, there may be no assets remaining to pay out to the holders of common stock. In addition, if we raise funds through the issuance of additional equity, whether through private placements or additional public offerings, such an issuance would dilute your ownershipour stockholders and, similar to some of our past financings, may contain terms that could result in us.
The terms of debt securities may also impose restrictions on our operations, which mayadditional further significant dilution in the future. Debt financing, if available, could include covenants limiting or restricting our ability to incurtake certain actions, such as incurring additional indebtedness, to paydebt, making capital expenditures, entering into licensing arrangements, or declaring dividends, on or repurchase our capital stock, or to make certain acquisitions or investments. In addition, weand may be subject to covenants requiringrequire us to satisfy certain financial tests and ratios, and our ability to satisfy such covenants may be affected by events outside of our control.
We expect to continue to incur significant research and development expenses, which may make it difficult for us to attain profitability, and may lead to uncertainty about or as to our ability to continue as a going concern.
Substantial funds were expended to develop our RNAi technologies, and additional substantial funds will be required for further research and development, including pre-clinical testing and clinical trials of any product candidates, and to manufacture and market any products that are approved for commercial sale. Because the successful development of our products 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 enough revenue, even if we are able to commercialize any of our product candidates, to become profitable.
In the event that we are unable to achieve or sustain profitability or to secure additional financing, we may not be able to meet our obligations as they come due, raising substantial doubts as to our ability to continue as a going concern. Any such inability to continue as a going concern may resultgrant security interests in our common stock holders losing their entire investment. There is no guaranty that we will become profitable or secure additional financing. We believe that we have adequate capital, in the form of cash on handassets, including our intellectual property and short-term investments,for our subsidiaries to supportguarantee our currently planned level of operations through the second half of 2009. Our financial statements contemplate that we will continue as a going concern and do not contain any adjustments that might result if we were unable to continue as a going concern. Changes in our operating plans, our existing and anticipated working capital needs, the acceleration or modification of our expansion plans, increased expenses, potential acquisitions or other events will all affect our ability to continue as a going concern.
Risks Related to Ownership of Our Common Stock
obligations.

The market price and trading volume of shares of our common stock may be volatilevolatile.

Prior to the Distribution and the Award, there was no trading

The market forprice of shares of our common stock.stock has exhibited substantial volatility recently. Between January 2, 2018 and June 11, 2019, the trading price of shares of our common stock as reported on Nasdaq ranged from a low of $0.40 to a high of $11.09. The market price of shares of our common stock could continue to fluctuate significantly for many reasons, including the following factors:

reports of the results of our clinical trials regarding the safety or efficacy of our product candidates and surrogate markers;
announcements of regulatory developments or technological innovations by us or our competitors;
announcements of business or strategic transactions or our success in finalizing such a transaction;
announcements of legal or regulatory actions against us or any adverse outcome of any such actions;

 • 39announcements of regulatory developments or technological innovations by us or our competitors,
 

changes in our relationships with our licensors, licensees and other strategic partners;
  
low volume in the number of shares of our common stock traded on Nasdaq;
changes in our relationship with our licensors and other strategic partners,
 
our quarterly operating results;
  
announcements of dilutive financing;
changes in our ownership or other relationships with CytRx,
 
announcements of additional potential reverse stock split;
  
developments in patent or other technology ownership rights;
our quarterly operating results,
 
additional funds may not be available on terms that are favorable to us and, in the case of equity financings, may result in dilution to our stockholders;
  
government regulation of drug pricing; and
developments in patent or other technology ownership rights,
 
• public concern regarding the safety of our products,
• government regulation of drug pricing, and
• general changes in the economy, the financial markets or the pharmaceutical or biotechnology industries.


17


general changes in the economy, the financial markets or the pharmaceutical or biotechnology industries.

In addition, factors

Factors beyond our control may also have an impact on the market price of shares of our common stock. For example, to the extent that other large companies within our industry experience declines in their stock price, our stock price may decline as well. In addition, whenprices, the market price of a company’s common stock drops significantly, stockholders often institute securities class action lawsuits against the company. A lawsuit against us could cause us to incur substantial costs and could divert the time and attention of our management and other resources.

Future sales of our shares by CytRx, or the possibility of such sales, could adversely affect our stock price.
CytRx owns 6,268,881 shares of our common stock may decline as well.

Inadequate funding for the FDA, the SEC and other government agencies could hinder their ability to hire and retain key leadership and other personnel, prevent new products and services from being developed or approximately 46%commercialized in a timely manner or otherwise prevent those agencies from performing normal business functions on which the operation of our outstanding shares. Webusiness may rely, which could negatively impact our business.

The ability of the FDA to review and approve new products can be affected by a variety of factors, including government budget and funding levels, ability to hire and retain key personnel and accept the payment of user fees, and statutory, regulatory, and policy changes. Average review times at the agency have agreedfluctuated in recent years as a result. In addition, government funding of the SEC and other government agencies on which our operations may rely, including those that fund research and development activities is subject to the 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 approved by necessary government agencies, which would adversely affect our business. For example, over the last several years, including beginning on December 22, 2018, the U.S. government has shut down several times and certain regulatory agencies, such as the FDA and the SEC, have had to furlough critical FDA, SEC and other government employees and stop critical activities. If a prolonged government shutdown occurs, it could significantly impact the ability of the FDA to timely review and process our regulatory submissions, which could have a material adverse effect on our business. Further, upon request by CytRx,completion of this offering and in our operations as a public company, future government shutdowns could impact our ability to access the public markets and obtain necessary capital in order to properly capitalize and continue our operations.

Risks Relating to this Offering and Ownership of Our Common Stock

Management will have broad discretion as to the use of the proceeds from this offering and we may not use the proceeds effectively.

Our management will have broad discretion with respect to the use our best efforts to cause allof proceeds of this offering, including for any of the purposes described in the section entitled “Use of Proceeds” beginning on page 46 of this prospectus. You will be relying on the judgment of our shares issuedmanagement regarding the application of the proceeds of this offering. The results and effectiveness of the use of proceeds are uncertain, and we could spend the proceeds in ways that you do not agree with or that do not improve our results of operations or enhance the value of our common stock. Our failure to CytRx pursuantapply these funds effectively could harm our business, delay the development of our product candidates and cause the price of our common stock to the two contribution agreements we entered into in relation to our initial capitalization to be registered under the Securities Act, with certain exceptions, with all expenses incurred in connection with any such registrationdecline.

40

You will be borne by us.

We also have granted CytRx what are commonly known as “piggyback” registration rights to include our shares currently owned by CytRx, or owned by CytRx in the futureexperience immediate and substantial dilution as a result of this offering and may experience additional dilution in the future.

You will incur immediate and substantial dilution as a dividendresult of this offering. After giving effect to the sale by us of securities offered in this offering at an assumed public offering price of $0.42 per share of common stock and accompanying common warrant, and after deducting underwriting discounts and commissions and estimated offering expenses payable by us, investors in this offering can expect an immediate dilution of approximately $0.26 per share. See the section entitled “Dilution” beginning on page 50 of this prospectus for a more detailed discussion of the dilution you will incur if you purchase shares in this offering. The discussion above assumes (i) 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 (ii) no exercise of the common warrants being offered in this offering.

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

There is no established public trading market for the pre-funded warrants or the common warrants being offered in this offering, and we do not expect a market to develop. In addition, we do not intend to apply to list the pre-funded warrants or the common warrants on any securities exchange or nationally recognized trading system, including The Nasdaq Capital Market. Without an active market, the liquidity of the pre-funded warrants and the common warrants will be limited.

Holders of pre-funded warrants or common warrants purchased in this offering will have no rights as common stockholders until such holders exercise their warrants and acquire our common stock.

Until holders of pre-funded warrants acquire shares of our common stock upon exercise thereof, holders of warrants will have no rights with respect to shares currently owned by CytRx, in other registration statements that we may file with the SEC on behalfshares of our companycommon stock underlying such warrants. Upon exercise of the pre-funded warrants or our security holders. The availabilitycommon 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.

Future sales of substantial amounts of our shares held by CytRx and UMMS for resale publicly, as well as any actualcommon stock, or the possibility that such sales of these shares,could occur, could adversely affect the market price of our shares.

Ifcommon stock.

Future sales in the value of our shares owned by CytRx from time to time were to exceed 40% of the value of CytRx’s total assets, CytRx may be deemed an “investment company” within the meaning of the Investment Company Act of 1940 and become subject to the stringent regulations applicable to investment companies. In this event, CytRx would likely seek to promptly sell or otherwise disposepublic market of shares of our common stock, including shares referred to in order to avoid becoming an inadvertent investment company. Any such salesthe foregoing risk factors or other disposition by CytRxshares issued upon exercise of our shares,outstanding stock options or warrants, or the possibility of suchperception by the market that these sales or disposition, could adversely affectoccur, could lower the market price of our shares.

We have granted CytRx preemptive rights to acquire shares that we may sell in the future, which may impair our abilitycommon stock or make it difficult for us to raise funds.additional capital.

41

Under an agreement between us, CytRx and our founding stockholders, with some exceptions, CytRx has preemptive rights to acquire a portion

As of any new securities sold or issued by us so as to maintain its percentage ownership of us at the time of any such sale andMarch 31, 2019, we had reserved for issuance which is currently approximately 46% of our outstanding shares. The exercise by CytRx of its preemptive rights may impair our ability to raise funds, or adversely affect the terms on which we are able to raise funds, as we may not be able to offer to new investors the quantity of our stock that they may desire to purchase.

CytRx’s ownership of our common stock could delay or prevent a change in corporate control.
CytRx owns approximately 46% of our common stock, and has preemptive rights, as described above, to maintain its percentage ownership. CytRx has agreed with UMMS, us and our other founding stockholders to vote its1,334,321 shares of our common stock soissuable upon the exercise of outstanding stock options at a weighted-average exercise price of $11.94 per share, 12,758 shares of our common stock issuable upon settlement of outstanding RSUs, and 17,698,061 shares of our common stock issuable upon the exercise of outstanding warrants at a weighted-average exercise price of $5.31 per share. Since March 31, 2019, we have issued 1,000,000 shares of our common stock in connection with the exercise of certain warrants pursuant to the warrant exercise agreement and also issued warrants exercisable for additional 1,000,000 shares of common stock at an exercise price per share of $1.40. Upon exercise or conversion, the underlying shares, similar to those issued as the settlement payment, may be resold into the public market. In the case of outstanding securities that a majorityhave exercise or conversion prices that are below the market price of our common stock from time to time, our stockholders would experience dilution upon the exercise or conversion of these securities.

Certain of our securityholders have registration rights and they can require us, subject to certain limitations, to register their securities for resale, or require us to include their securities for resale in any offering of our common stock we may propose. Any such resales into the public market could place downward pressure on the price of our common stock.

We have issued and may issue additional preferred stock in the future, and the terms of the memberspreferred stock may reduce the value of our common stock.

We are authorized to issue up to five million shares of preferred stock in one or more series. Our board of directors are not affiliated (as defined)may determine the terms of future preferred stock offerings without further action by our stockholders. If we issue shares of preferred stock, it could affect stockholder rights or reduce the market value of our outstanding common stock. In particular, specific rights granted to future holders of preferred stock may include voting rights, preferences as to dividends and liquidation, conversion and redemption rights, sinking fund provisions, and restrictions on our ability to merge with CytRx. However, by virtue of its stock ownership, CytRx may be able to significantly influence the outcome of matters required to be submittedor sell our assets to a votethird party.

We have in the past and expect in the future to settle legal claims through the issuance of freely tradable shares of our stockholders, including any proposed amendmentscommon stock, which will result in dilution to holders of our certificate of incorporationcommon stock and approval of mergers and other significant corporate transactions. This concentration of ownership may adversely affect the market price of our common stock by:

• delaying, deferring or preventing a change in control of our company,
• impeding a merger, consolidation, takeover or other business combination involving our company, or
• discouraging a potential acquirer from making a tender offer or otherwise attempting to obtain control of our company.


18


CytRx could unilaterally effect a changeWe have in the past and expect in the future to settle legal claims through the issuance of controlfreely tradable shares of our company by selling or disposingcommon stock. In June 2018, we issued 228,672 unrestricted shares of our common stock (or $1,250,000 based on the volume-weighted average closing price for the 20 trading days immediately preceding June 21, 2018, the day before the transfer of the settlement stock to the settlement fund) to settle the case entitledPatel vs. Galena Biopharma, Inc. et. al. We may issue additional shares owned by it.
If CytRx wereof common stock as settlement payments in the future. Payment of these amounts in our common stock could cause significant dilution to sell or otherwise disposeour stockholders, and the amount of all orthat dilution will vary depending on the price of our common stock at the time of the payment. In addition, the issuance of such a significant portionnumber of shares of our shares owned by it tomay cause a single buyer or group of affiliated buyers, it could effect a change of controldecrease in the trading price of our company without the advice or participation by our board of directors or other stockholders, since transferees of the shares owned by CytRx will not be bound by CytRx’s agreements with UMMS, us and our other founding stockholders not to vote our shares owned by it for the election of a majority of our board of directors who are affiliated with CytRx.
common stock.

Anti-takeover provisions of our certificateAmended and Restated Certificate of incorporationIncorporation and by-lawsour Amended and Restated Bylaws and provisions of Delaware law could delay or prevent a change of control that you may favor.control.

Anti-takeover provisions of our certificateAmended and Restated Certificate of incorporationIncorporation and by-lawsour Amended and provisions of Delaware lawRestated Bylaws may discourage, delay or prevent a merger or other change of control that stockholders may consider favorable or may impede the ability of the holders of our common stock to change our management.management and may be constrained by other contractual agreements with third parties. These provisions of our certificateAmended and Restated Certificate of incorporationIncorporation and by-laws,our Amended and Restated Bylaws, among other things:

• ·divide our boardBoard of directorsDirectors into three classes, with members of each class to be elected for staggered three-year terms,terms;

• ·limit the right of stockholderssecurityholders to remove directors,directors;

·prohibit stockholders from acting by written consent;

• ·regulate how stockholders may present proposals or nominate directors for election at annual meetings of stockholders,stockholders; and

• ·authorize our board of directorsBoard to issue preferred stock in one or more series, without stockholder approval.

In addition, Section 203 of the Delaware General Corporation Law provides that, subject to limited exceptions, persons that acquire, or are affiliated with a person that acquires, more than 15% of the outstanding voting stock of a Delaware corporation such as our company shall not engage in any business combination with that corporation, including by merger, consolidation or acquisitions of additional shares for a three-year period following the date on which that person or itsour affiliate crosses the 15% stock ownership threshold. Section 203 could operate to delay or prevent a change of control of us.

We are, and in the future may be, subject to legal or governmental proceedings that could adversely affect our company.financial condition and our business.

Our predecessor company, Galena, was involved in multiple legal and governmental proceedings, including stockholder class actions, both state and federal, some of which are ongoing and to which the combined company continues to be subject. These legal and governmental actions, which we refer to as the Galena Legacy Matters, included allegations relating to federal securities law violations, claims under the False Claims Act and Anti-Kickback Statute, claims regarding breaches of contract, and other stockholder allegations, including claims of breaches of fiduciary duty by our former directors, and fentanyl related litigation. As a result of a cease and desist order issued by the SEC on April 10, 2017 and our related settlement with the SEC, or the SEC Settlement, we are currently an “ineligible issuer” as the term is defined under Rule 405 promulgated under the Securities Act. This could make it more difficult for us to raise necessary financing in the future. If we fail to comply with the terms of the SEC Settlement in the future, it could have significant additional adverse consequences to us. A number of the Galena Legacy Matters relate to Galena’s former commercial activities associated with Abstral, a fentanyl, or synthetic opioid, product. There continues to be significant litigation and governmental activity generally in the fentanyl and opioid area, and this activity is expected to continue and may increase in the future. We cannot assure you we will not become subject to additional significant legal or governmental proceedings relating to Galena’s former Abstral business in the future.

42

These Galena Legacy Matters have required and continue to require our management and board of directors to devote a significant amount of time and resources to defending such claims and addressing such allegations, rather than focusing on executing on our business plans and operations. We may, acquirein the future, become subject to additional legal and governmental actions that will also require us to expend time and resources. The settlement of the Galena Legacy Matters has resulted in substantial payments, some of which have not been covered by our insurance policies. We may continue to incur substantial unreimbursed legal fees and other businessesexpenses in connection with the Galena Legacy Matters. These ongoing and other future legal and governmental proceedings may not qualify for coverage under, or form joint ventures thatmay exceed the limit of, our applicable directors and officers liability insurance policies and could have a material adverse effect on our financial condition, liquidity, and results of operations. An unfavorable outcome in any of these matters could damage our business and reputation or result in additional claims or proceedings against us. Moreover, in addition to these ongoing and prior matters, we may be unsuccessfulexposed to claims as a result of the Merger, or other legal or governmental actions in the future, which could result in the payment of additional amounts and could adversely dilute your ownershiphave a material adverse effect on our financial condition and results of our company.

As part ofoperations. We can make no assurances as to the time or resources that will need to be devoted to the Galena Legacy Matters, or any new or future matters or their outcome, or the impact, if any, that these matters or any resulting legal or governmental proceedings may have on our business strategy, weor financial condition but any further action in respect of any such matter by a governmental agency could have a material adverse effect on our results of operation and our business and prospects. See “Business—Legal Proceedings” for more information regarding our legal and governmental proceedings.

If our common stock becomes subject to the penny stock rules, it may pursue future acquisitionsbe more difficult to sell our common stock.

The SEC has adopted rules that regulate broker-dealer practices in connection with transactions in penny stocks. Penny stocks are generally equity securities with a price of other complementary businessesless than $5.00 (other than securities registered on certain national securities exchanges or authorized for quotation on certain automated quotation systems, provided that current price and technology licensing arrangements. We also may pursue strategic alliances. We have no experiencevolume information with respect to acquiring other companies and limited experience with respect to the formation of collaborations, strategic alliances and joint ventures. If we were to make any acquisitions, we may not be able to integrate these acquisitions successfully into our existing business and we could assume unknown or contingent liabilities. We also could experience adverse effects on our reported results of operations from acquisition related charges, amortization of acquired technology and other intangibles and impairment charges relating to write-offs of goodwill and other intangible assets from time to time following the acquisition. Integration of an acquired company also may require management resources that otherwise would be available for ongoing development of our existing business. We may not identify or complete these transactions in a timely manner, on a cost-effective basis,such securities is provided by the exchange or at all,system). The OTC Bulletin Board does not meet such requirements and we may not realizeif the anticipated benefits of any acquisition, technology license or strategic alliance.

To finance acquisitions, we may choose to issue sharesprice of our common stock is less than $5.00 and our common stock is no longer listed on a national securities exchange such as consideration, which would dilute your ownership interest in us. Alternatively, itNasdaq, our stock may be necessarydeemed a penny stock. The penny stock rules require a broker-dealer, at least two business days prior to a transaction in a penny stock not otherwise exempt from those rules, to deliver to the customer a standardized risk disclosure document containing specified information and to obtain from the customer a signed and date acknowledgment of receipt of that document. In addition, the penny stock rules require that prior to effecting any transaction in a penny stock not otherwise exempt from those rules, a broker-dealer must make a special written determination that the penny stock is a suitable investment for usthe purchaser and receive: (i) the purchaser’s written acknowledgment of the receipt of a risk disclosure statement; (ii) a written agreement to raise additional funds through public or private financings. Additional fundstransactions involving penny stocks; and (iii) a signed and dated copy of a written suitability statement. These disclosure requirements may not be available on terms that are favorable to us and,have the effect of reducing the trading activity in the case of equity financings, may result in dilution to our stockholders. Any future acquisitions by us also could result in large and immediate write-offs, the incurrence of contingent liabilities or amortization of expenses related to acquired intangible assets, any of which could harm our operating results.


19


FORWARD-LOOKING STATEMENTS
Any statements in this prospectus about our expectations, beliefs, plans, objectives, assumptions or future events or performance are not historical facts and are forward-looking statements. These statements are often, but not always, made through the use of words or phrases such as “believe,” “will,” “expect,” “anticipate,” “estimate,” “intend,” “plan,” and “would.” For example, statements concerning financial condition, possible or assumed future results of operations, growth opportunities, industry ranking, plans and objectives of management, marketssecondary market for our common stock, and therefore stockholders may have difficulty selling their shares.

We have never declared or paid cash dividends on our common stock and we do not anticipate paying cash dividends on our common stock in the foreseeable future.

Our business requires significant funding. We currently plan to invest all available funds and future managementearnings in the development and organizational structuregrowth of our business and do not anticipate paying any cash dividends on our common stock in the foreseeable future and are allprohibited by the terms of our outstanding indebtedness from paying dividends on any common stock, except with the prior consent of our lenders. As a result, capital appreciation, if any, of our common stock will be our stockholders’ sole source of potential gain for the foreseeable future.

43

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus and the documents incorporated by reference into this prospectus include forward-looking statements. Forward-looking statements are not guaranteeswithin the meaning of performance. TheySection 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, as amended that relate to future events or our future financial performance and involve known and unknown risks, uncertainties and assumptionsother factors that may cause our actual results, levels of activity, performance or achievements to differ materially from any future results, levels of activity, performance or achievements expressed or implied by anythese forward-looking statement.

Anystatements. Words such as, but not limited to, “anticipate,” “aim,” “believe,” “contemplate,” “continue,” “could,” “design,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,” “predict,” “poise,” “project,” “potential,” “suggest,” “should,” “strategy,” “target,” “will,” “would,” and similar expressions or phrases, or the negative of those expressions or phrases, are intended to identify forward-looking statements, are qualifiedalthough not all forward-looking statements contain these identifying words. Although we believe that we have a reasonable basis for each forward-looking statement contained in their entiretythis prospectus and incorporated by reference to the factors discussed throughoutinto this prospectus. Someprospectus, we caution you that these statements are based on our projections of the future that are subject to known and unknown risks and uncertainties and assumptionsother factors that couldmay cause our actual results, level of activity, performance or achievements expressed or implied by these forward-looking statements, to differ materially from estimates or projections containeddiffer. The section in this prospectus entitled “Risk Factors” and the sections in our periodic reports, including the 2018 Form 10-K entitled “Business,” and in the forward-looking statements include but are not limited to:
• Development of our RNAi-based therapeutics may be delayed or may not proceed as planned, and we may not be able to complete development of any RNAi-based product,
• High costs associated with being a publicly traded company,
• The inability to raise additional future financing,
• Our ability to control product development costs,
• We may not be able to attract and retain key employees,
• We may not be able to compete effectively,
• We may not be able to enter into new strategic collaborations,
• Changes in government regulation affecting our RNAi-based therapeutics could increase our development costs,
• Our involvement in patent and other intellectual property litigation could be expensive and could divert management’s attention,
• The possibility that there will be no market acceptance for our products, and
• Changes in third-party reimbursement policies could adversely affect potential future sales of any of our products that are approved for marketing.
The foregoing list sets forth2018 Form 10-K and the 2019 Form 10-Q entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” as well as other sections in this prospectus and the documents or reports incorporated by reference into this prospectus, discuss some but not all, of the factors that could affectcontribute to these differences. These forward-looking statements include, among other things, statements about:

·our projected financial position and estimated cash burn rate;

·our estimates regarding expenses, future revenues and capital requirements;

·our ability to continue as a going concern;

·our need to raise substantial additional capital to fund our operations;

·the success, cost and timing of our clinical trials;

·our dependence on third parties in the conduct of our clinical trials;

·our ability to obtain the necessary regulatory approvals to market and commercialize our product candidates;

·the potential that results of preclinical and clinical trials indicate our current product candidates or any future product candidates we may seek to develop are unsafe or ineffective;

·the results of market research conducted by us or others;

·our ability to obtain and maintain intellectual property protection for our current product candidates;

·our ability to protect our intellectual property rights and the potential for us to incur substantial costs from lawsuits to enforce or protect our intellectual property rights;

·the possibility that a third party may claim we have infringed, misappropriated or otherwise violated their intellectual property rights and that we may incur substantial costs and be required to devote substantial time defending against these claims;

·our reliance on third-party suppliers and manufacturers;

·the success of competing therapies and products that are or become available;

·our ability to expand our organization to accommodate potential growth and our ability to retain and attract key personnel;

·the potential for us to incur substantial costs resulting from product liability lawsuits against us and the potential for these product liability lawsuits to cause us to limit our commercialization of our product candidates;

·market acceptance of our product candidates, the size and growth of the potential markets for our current product candidates and any future product candidates we may seek to develop, and our ability to serve those markets; and

·the successful development of our commercialization capabilities, including sales and marketing capabilities.

44

Our current product candidates are undergoing clinical development and have not been approved by the FDA or the European Commission. These product candidates have not been, nor may they ever be, approved by any regulatory agency or competent authorities nor marketed anywhere in the world.

We may not actually achieve the plans, intentions or expectations disclosed in our ability to achieve results described in any forward-looking statements. Stockholders are cautionedstatements, and you should not to place undue reliance on suchour forward-looking statements. Forward-looking statements which speak onlyshould be regarded solely as ofour current plans, estimates and beliefs. We have included important factors in the date ofcautionary statements included in this prospectus. We assume no obligation and expressly disclaim any duty to update any forward-looking statement to reflect events or circumstances afterdocument, particularly in the datesection entitled “Risk Factors” beginning on page 7 of this prospectus that we believe could cause actual results or events to reflectdiffer materially from the occurrence of unanticipated events. In addition,forward-looking statements that we cannotmake. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of each factorall factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements contained in this prospectus.

All subsequent writtenwe may make. Given these risks and oraluncertainties, readers are cautioned not to place undue reliance on such forward-looking statements. All forward-looking statements attributable to us or any person acting on our behalf are expressly qualified in their entirety by this cautionary statement. Our forward-looking statements do not reflect the cautionarypotential impact of any future acquisitions, mergers, dispositions, joint ventures or investments we may make. You should read this prospectus and the documents that we have filed as exhibits to this prospectus and incorporated by reference herein completely and with the understanding that our actual future results may be materially different from the plans, intentions and expectations disclosed in the forward-looking statements we make. The forward-looking statements contained or referred to in this section.prospectus are made as of the date of this prospectus and we do not assume any obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable law.

45


20


USE OF PROCEEDS

We will not receive anyestimate that the net proceeds from theour issuance and sale of our common stock byand pre-funded warrants and accompanying common warrants in this offering will be approximately $18.1 million, after deducting the Selling Stockholders. The Selling Stockholders will pay any underwriting discounts and commissions and estimated offering expenses incurredpayable by themus and assuming a public offering price of $0.42 per share and accompanying common warrant, which is the last reported sale price of our common stock on Nasdaq on June 11, 2019, and excluding the proceeds, if any, from the exercise of any common warrants issued in disposingthis offering.

As of March 31, 2019, we had cash and cash equivalents of approximately $2.6 million. We intend to use the net proceeds from this offering to commence a Phase 3 study for GPS monotherapy in AML CRem2 patients and to continue our Phase 1/2 basket type study of GPS in combination with pembrolizumab, and for general corporate purposes.

This expected use of net proceeds from this offering and our existing cash and cash equivalents represents our intentions based upon our current plans and business conditions, which could change in the future as our plans and business conditions evolve. The amounts and timing of our actual expenditures may vary significantly depending on numerous factors, including the progress of our development, the status of and results from clinical trials, as well as any collaborations that we may enter with third parties for GPS or any other product candidates we may seek to develop, and any unforeseen cash needs. As a result, our management will retain broad discretion over the allocation of the shares.net proceeds from this offering. We have no current agreements, commitments or understandings for any material acquisitions or licenses of any products, businesses or technologies.

We anticipate existing cash and cash equivalents and the net proceeds from this offering will bear all other costs, fees and expenses incurredbe sufficient to fund our planned operations through December 31, 2020. We plan to raise additional capital in effecting the issuance and registrationfuture to fund the completion of the shares covered byclinical development of our current product candidates and our ongoing working capital requirements.

As of the date of this prospectus, we cannot predict with certainty all the uses for the net proceeds to be received upon the completion of this offering or the amounts we will spend on the uses set forth above. Pending our use of the net proceeds from this offering, we intend to invest a portion of the net proceeds in a variety of capital preservation investments, including without limitation, all registrationshort-term, interest-bearing instruments and filing fees, NASDAQ Capital Market feesU.S. government securities.

46

DIVIDEND INFORMATION

Dividend Policy

We have never declared or paid any cash dividends on our common stock and fees and expenses of our counsel and our accountants.

DIVIDEND POLICY
We do not anticipate declaring or paying any cash dividends on our common stock in the foreseeable future. We expect to retain all available funds and any future earnings if any, for use in ourto support operations and fund the development activities and the operationgrowth of our business. The payment of any future dividends will be subject to the discretion of ourOur board of directors and will depend, among other things, uponhas the right to authorize the issuance of preferred stock in the future, without further stockholder approval, the holders of which may have preferences over the holders of our results of operations, financial condition, cash requirements, prospects and other factors that our board of directors may deem relevant. Additionally, our ability to pay future dividends may be restricted by the terms of any debt financing.
MARKET PRICE OF OUR COMMON STOCK
Our common stock has been listed on the Nasdaq Capital Market under the symbol “RXII” since March 12, 2008. Prioras to that time, there was no public market for our common stock. payment of dividends.

47

CAPITALIZATION

The following table sets forth for the periods indicated the highour cash and low sales prices of our common stock on the Nasdaq Capital Market.

         
2008
 High  Low 
 
First Quarter (commencing on March 12, 2008) $23.95  $6.01 
Second Quarter $10.12  $5.22 
Third Quarter (through July 23, 2008) $8.11  $6.42 
A recent reported closing price for our common stock is set forth on the cover page of this prospectus. Computershare Investor Services is the transfer agentcash equivalents and registrar for our common stock. On July 1, 2008, we had 660 holders of record of our common stock.
DETERMINATION OF OFFERING PRICE
The prices at which the shares of common stock covered by this prospectus may actually be disposed may be at fixed prices, at prevailing market prices at the time of sale, at prices related to the prevailing market price, at varying prices determined at the time of sale, or at negotiated prices.


21


SELLING STOCKHOLDERS
The following tables set forth information with respect to the beneficial ownership of our common stock by the Selling Stockholderscapitalization as of July 1, 2008. Beneficial ownership is determined in accordance with SEC rules, and generally includes voting or investment power with respect to securities. For a discussion of material relationships with the Selling Stockholders, see “Certain Relationships and Related Transactions” below.
The Selling Stockholders, if they desire, may dispose of the shares covered by this prospectus from time to time at such prices as it may choose. Before a stockholder not named below may use this prospectus in connection with an offering of shares, this prospectus must be amended or supplemented to include the name and number of shares beneficially owned by the selling stockholder and the number of shares to be offered. Any amended or supplemented prospectus also will disclose whether any selling stockholder named in that amended or supplemented prospectus has held any position, office or other material relationship with us or any of our predecessors or affiliates during the three years prior to the date of the amended or supplemented prospectus.
                     
        Number of
       
  Beneficial Ownership of Selling Stockholders Before this Offering  Shares
  Beneficial Ownership Upon Completion of this Offering (Assuming all Shares Offered hereby are Sold) 
  Number of
     Being
  Number of
    
Name
 Shares  Percent  Offered  Shares  Percent 
 
Investment Funds Affiliated with Fidelity Investments(1)  2,049,622   14.9%  1,023,299   1,026,323   7.5%
RHP Master Fund, Ltd  50,000   *   50,000       
Stephen S. Galliker(1)  85,000   *   10,000   75,000   * 
Sandford J. Hillsberg(1)  85,000   *   10,000   75,000   * 
Mark J. Ahn, Ph.D.(1)  85,000   *   10,000   75,000   * 
March 31, 2019:

·on an actual basis as of March 31, 2019;

Represents less than 1%·on a pro forma basis to reflect the exercise of 1,000,000 warrants between April 1, 2019 and May 31, 2019 to purchase shares of common stock at an exercise price of $1.10 per share, resulting in net cash proceeds received of approximately $1.0 million after deducting commissions and offering expenses; and

·

on an as adjusted basis to give further effect to the outstandingissuance and sale of shares of our common stock.

(1)For detailed information regarding such Selling Stockholders’ beneficial ownership, see “Beneficial Ownershipstock and accompanying common warrants in this offering at an assumed public offering price of Certain Owners$0.42 per share and Management” below.
PLAN OF DISTRIBUTION
The Selling Stockholders may, from time to time, sell any or all of their shares of common stock on any stock exchange, market or trading facility on which the shares are traded or in private transactions. These sales may be at fixed or negotiated prices. The Selling Stockholders may use any one or more of the following methods when selling shares:
• Ordinary brokerage transactionsaccompanying common warrant, which is the last reported sale price for our common stock on Nasdaq on June 11, 2019, after deducting the underwriting discounts and transactions in which the broker-dealer solicits purchasers;
• Block trades in which the broker dealer will attempt to sell the shares as agent but may positioncommissions and resell a portion of the block as principal to facilitate the transaction;
• Purchasesestimated offering expenses payable by a broker-dealer as principalus, and resale by the broker-dealer for its account;
• An exchange distribution in accordance with the rules of the applicable exchange;
• Privately negotiated transactions;
• Short sales;
• Broker-dealers may agree with the selling stockholders to sell a specified number of such shares at a stipulated price per share;
• A combination of any such methods of sale; and
• Any other method permitted pursuant to applicable law.assuming no pre-funded warrants are issued.


22


The Selling Stockholders may also sell shares under Rule 144 underOur capitalization following the Securities Act, if available, rather than underclosing of this prospectus.
Broker-dealers engaged by the Selling Stockholders may arrange for other broker-dealers to participate in sales. Broker-dealers may receive commissions or discounts from the Selling Stockholders (or, if any broker-dealer acts as agent for the purchaser of shares, from the purchaser) in amounts tooffering will be negotiated. The Selling Stockholders do not expect these commissions and discounts to exceed what is customary in the types of transactions involved. Any profitsadjusted based on the resale of shares of common stock by a broker-dealer acting as principal might be deemed to be underwriting discounts or commissions under the Securities Act. Discounts, concessions, commissionsactual public offering price and similar selling expenses, if any, attributable to the sale of shares will be borne by a Selling Stockholder. The Selling Stockholders may agree to indemnify any agent, dealer or broker-dealer that participates in transactions involving sales of shares if liabilities are imposed on that person under the Securities Act.
The Selling Stockholders may from time to time pledge or grant a security interest in some or all of the shares of common stock owned by them and, if they default in the performance of their secured obligations, the pledgees or secured parties may offer and sell the shares of common stock from time to time under this prospectus after we have filed a supplement to this prospectus under Rule 424(b)(3) or other applicable provision of the Securities Act supplementing or amending the list of Selling Stockholders to include the pledgee, transferee or other successors in interest as selling stockholders under this prospectus.
The Selling Stockholders also may transfer the shares of common stock in other circumstances, in which case the transferees, pledgees or other successors in interest will be the selling beneficial owners for purposesterms of this prospectusoffering determined at pricing. You should read this table together with our consolidated financial statements and may sell the shares of common stock from time to time under this prospectus after we have filed a supplement to this prospectus under Rule 424(b)(3) or other applicable provision ofrelated notes and the Securities Act supplementing or amending the list of Selling Stockholders to include the pledgee, transferee or other successors in interest as selling stockholders under this prospectus.
The Selling Stockholders and any broker-dealers or agents that are involved in selling the shares of common stock may be deemed to be “underwriters” within the meaning of the Securities Act in connection with such sales. In such event, any commissions received by such broker-dealers or agents and any profit on the resale of the shares of common stock purchased by them may be deemed to be underwriting commissions or discounts under the Securities Act.
We are required to pay all fees and expenses incident to the registration of the shares of common stock. We have agreed to indemnify the Selling Stockholders against certain losses, claims, damages and liabilities, including liabilities under the Securities Act.
The Selling Stockholders have advised us that they have not entered into any agreements, understandings o arrangements with any underwriters or broker-dealers regarding the sale of their shares of common stock, nor is there an underwriter or coordinating broker acting in connection with a proposed sale of shares of common stock by any Selling Stockholder. If we are notified by any Selling Stockholder that any material arrangement has been entered into with a broker-dealer for the sale of shares of common stock, if required, we will file a supplement to this prospectus. If the Selling Stockholders use this prospectus for any sale of the shares of common stock, they will be subject to the prospectus delivery requirements of the Securities Act.
The anti-manipulation rules of Regulation M under the Exchange Act of 1934 may apply to sales of our common stock and activities of the Selling Stockholders.


23


SELECTED HISTORICAL FINANCIAL INFORMATION
The following selected historical financial information should be read in conjunction with “Management’ssections entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations”Operations” in the 2018 Form 10-K and the financial statements and corresponding notes to financial statements included elsewhere in this prospectus.
RXi was2019 Form 10-Q, which are incorporated as Argonaut Pharmaceuticals, Inc., in Delaware, on April 3, 2006 by CytRx and our four scientific founders, and we changed our name to RXi Pharmaceuticals Corporation (a development stage company) on November 28, 2006. From April 3, 2006 (date of incorporation) until January 8, 2007, no activities were conducted at the RXi level. On March 11, 2008, CytRx distributed approximately 36% of our common stock to its shareholders of record as of March 6, 2008, and awarded approximately 27,700 shares of our common stock to certain of its directors, officers and other employees. CytRx currently owns approximately 46% of our common stock.
The financial statements of RXi included in this prospectus for the periods through December 31, 2006 have been disaggregated, or “carved-out,” of the financial statements of CytRx, as our “predecessor,” which were audited by BDO Seidman, LLP, an independent registered public accounting firm. These carved-out financial statements form what we refer to herein as the financial statements of the predecessor, and include both direct and indirect expenses. The historical direct expenses consist primarily of the various costs for technology license agreements, sponsored research agreements and fees paid to scientific advisors. Indirect expenses represent expenses incurred by CytRx on behalf of RXi that have been allocated to RXi. The indirect expenses are based upon (1) estimates of the percentage of time spent by individual CytRx employees working on RXi matters by year and (2) allocations of various expenses associated with each employee including salary, benefits, rent associated with an employee’s office space, accounting and other general and administrative expenses. The percentage of time spent by individual CytRx employees was then multiplied by the allocation of various expenses associated with those employees to develop an allocation of expense per employee and the sum of such allocations for these employees equals the total expense allocation for the year. RXi’s financial information as of December 31, 2006, December 31, 2007 and March 31, 2008, and for the periods ended December 31, 2007, March 31, 2008 and March 31, 2007, are referred to in this prospectus as the financial information of the successor, and includes expenses incurred by RXi in its RNAi therapeutic programs, as well as an allocation of corporate services provided by CytRx for each period through December 31, 2007. In addition, the net intercompany activities between the predecessor and CytRx have been accumulated into a single caption entitled “Parent Company’s Net Deficit.”
The periods ended December 31, 2006, 2005 and 2004 as well as the cumulative financial information for the period from January 1, 2003 (date of inception) through December 31, 2006 for our predecessor and the financial information of the successor as of December 31, 2007 and 2006 and for the period from April 3, 2006 (date of incorporation) to December 31, 2007 have been audited by our independent registered public accounting firm, BDO Seidman, LLP. The information presented as of and for the three-month periods ended March 31, 2008 and 2007, as well as the cumulative financial information for the period from January 1, 2003 (date of inception) through March 31, 2008, is unaudited and has been prepared on the same basis as the audited financial statements and includes all adjustments, consisting of only normal recurring adjustments, necessary for the fair presentation of this information in all material respects. The results of any interim period are not necessarily indicative of the results of operations to be expected for a full fiscal year.
In 2003, CytRx entered into several technology license agreements with UMMS related to RNAi technologies. CytRx subsequently entered into other RNAi-related technology agreements with UMMS and other parties, as well as four sponsored research agreements pursuant to which CytRx funded RNAi research activities. Three of these sponsored research agreements were with UMMS and one of the sponsored research agreements was with Massachusetts General Hospital. On January 8, 2007, RXi entered into a contribution agreement with CytRx under which CytRx assigned and contributed to RXi substantially all of its RNAi-related technologies and assets, and we commenced operations in January 2007.
Management believes the assumptions underlying the carve-out financial information are reasonable; however, RXi’s financial position, results of operations and cash flows may have been materially different if it was operated as a stand-alone entity as of and for the periods presented.


24

reference herein.


  Actual  Pro Forma  Pro Forma
As
Adjusted(1)
 
  (in thousands)    
Cash and cash equivalents $2,576  $3,621  $  21,741 
             
Stockholders’ equity:            
Preferred stock, $0.0001 par value per share:
5,000,000 shares authorized; Series A convertible preferred stock, 17,500 shares designated; No shares issued and outstanding actual and no shares issued and outstanding pro forma
         
Common stock, $0.0001 par value per share:
350,000,000 shares authorized, 24,176,475 shares issued and outstanding; 25,176,475 shares issued and outstanding pro forma
  2   2   7 
Additional paid-in capital  89,340   90,385   108,500 
Accumulated deficit  (86,392)  (86,392)  (86,392)
             
Total stockholders’  equity  2,950   3,995   22,115 
             
Total capitalization $2,950  $3,995  $22,115 

We generated no revenues during the years ended December 31, 2007, 2006, 2005 or 2004 or for the three-month periods ended March 31, 2008 and 2007. We also anticipate that no revenue will be generated for the year ending December 31, 2008. Accordingly, for accounting purposes,we are considered a development stage company.
                             
  Period from
                   
  January 1,
  For the
  For the
             
  2003 (Date of
  Three
  Three
  For the
  For the
  For the
  For the
 
  Inception)
  Months
  Months
  Year
  Year
  Year
  Year
 
  through
  Ended
  Ended
  Ended
  Ended
  Ended
  Ended
 
  March 31,
  March 31,
  March 31,
  December 31,
  December 31,
  December 31,
  December 31,
 
  2008  2008  2007  2007  2006  2005  2004 
  (Successor)  (Successor)  (Successor)  (Successor)  (Predecessor)  (Predecessor)  (Predecessor) 
 
Statement Expenses Data:
                            
Expenses:                            
Research and development $16,376  $1,088  $824  $6,747  $1,772  $2,080  $2,814 
General and administrative  7,816   1,625   588   4,666   633   129   458 
                             
Operating loss  (24,192)  (2,713)  (1,412)  (11,413)  (2,405)  (2,209)  (3,272)
Interest income  523   75      448          
Other expense  (8)  (8)               
                             
Loss before income taxes  (23,677)  (2,646)  (1,412)  (10,965)  (2,405)  (2,209)  (3,272)
Income taxes           (25)         
                             
Net loss $(23,677) $(2,646) $(1,412) $(10,990) $(2,405) $(2,209) $(3,272)
                             
Basic and diluted net loss per share  N/A  $(0.21) $(0.17) $(0.99)  N/A   N/A   N/A 
                             
Weighted average shares outstanding, basic and diluted  N/A   12,684,432   8,117,016   11,113,137   N/A   N/A   N/A 
                             
Balance Sheet Data:
                            
                         
  As of
  As of
  As of
  As of
  As of
  As of
 
  March 31,
  December 31,
  December 31,
  December 31,
  December 31,
  December 31,
 
  2008  2007  2006  2006  2005  2004 
  (Successor)  (Successor)  (Successor)  (Predecessor)  (Predecessor)  (Predecessor) 
 
Cash and cash equivalents $9,857  $1,763  $2  $  $  $ 
Short term investments     9,952             
Total current assets  10,179   11,737   2          
Working capital  8,405   10,413   2   (318)  (500)  (968)
Total assets  10,580   12,147   2   57   50    
Due to parent  (67)  (207)            
Total stockholders’ equity  8,806   10,823   2          
Parent company’s net deficit           (268)  (450)  (968)


25


MANAGEMENT’S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS
You should read the following discussion in conjunction with the RXi and predecessor carve-out financial statements and the notes to financial statements included elsewhere in this prospectus. The carved-out financial statements were derived from the consolidated financial statements of CytRx to include the historical operations being transferred to RXi and have been labeled as “predecessor” throughout this prospectus. This “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section contains forward-looking statements. Please see “Forward-Looking Statements” for a discussion of the uncertainties, risks and assumptions associated with these statements. Our actual results and the timing of certain events could differ materially from those anticipated in these forward-looking statements as a result of certain factors, including those discussed below and elsewhere in this prospectus, particularly under the heading “Risk Factors.”
Overview
We are a discovery-stage biopharmaceutical company pursuing proprietary therapeutics based on RNA interference, or RNAi, a naturally occurring cellular mechanism that has the potential to effectively and selectively interfere with, or “silence,” expression of targeted disease-associated genes. We intend to initially focus on certain neurodegenerative diseases, metabolic diseases, and oncology. By utilizing our expertise in RNAi and the RNAi technology platform we have licensed from prominent researchers, we believe we will be able to discover and develop lead compounds and move them into and through development for potential commercialization more efficiently than traditional drug development approaches.
We were formed in 2006 by CytRx and four prominent RNAi researchers, including Dr. Craig Mello, who was awarded the 2006 Nobel Prize in Medicine for his co-discovery of RNAi. From 2003 through 2006, CytRx sponsored therapeutic RNAi research at UMMS and Massachusetts General Hospital. We commenced operations in January 2007 after CytRx contributed to us its portfolio of RNAi therapeutic assets in exchange for approximately 7.04 million shares of our common stock on January 8, 2007. These assets consisted primarily of RNAi licenses and related intellectual property, and a nominal amount of equipment. The cost of the licenses had previously been expensed by CytRx as in-process research and development and was recorded in the predecessor financial statements at cost.
To date, our principal activities have consisted of recruiting an RNAi-focused management and scientific and clinical advisory team which has focused on assessing and acquiring additional RNAi technologies, performing discovery and pre-clinical research, developing clinical strategies, exploring potential development partnerships and completing our organizational activities.
We have not generated revenue to date and may not generate revenue in the foreseeable future, if ever. We expect to incur significant operating losses as we advance our product candidates through the drug development and regulatory process. In addition to increasing research and development expenses, we expect general and administrative costs to increase related to operation as a public company and as we add personnel. We will need to generate significant revenues to achieve profitability and might never do so. In the absence of product revenues, our potential sources of operational funding are expected to be the proceeds from the sale of equity, funded research and development payments and payments under collaborative agreements. We believe that we have sufficient cash, cash equivalents and short-term investments to fund our currently planned business activities through the second half of 2009.
The Founding and Funding of RXi
On April 30, 2007, we issued approximately 3,273,000 additional shares of our common stock to CytRx at $5.19 per share, based in part, upon the advice of the third-party valuation advisor and assuming the issuance of 462,112 shares to UMMS pursuant to our license agreements with them, in exchange for CytRx’s additional investment of $17.0 million. On September 25, 2007, we issued an additional 188,387 shares of common stock to CytRx at $5.19 per share to satisfy in full certain reimbursement amounts owed to CytRx
(1)

Each $0.10 increase (decrease) in the assumed public offering price per share and accompanying common warrant would increase (decrease) the amount of cash and cash equivalents, working capital, total assets, and total stockholders’ equity by approximately $4.4 million, assuming the number of securities offered by us, as set forth on the cover page of this prospectus, remains the same, no pre-funded warrants are issued, and after deducting underwriting discounts and commissions and estimated offering expenses payable by us. CytRx currently owns approximately 46% of our outstanding shares of common stock. In the event that we


26


propose to sell or issue shares of RXi common stock in the future, CytRx will have the right to purchase a portion of such shares sufficient to maintain its percentage ownership at the time of such sale or issuance. This right will terminate on the earlier of January 8, 2012 or the first date at which CytRx owns less than 10% of our outstanding shares. On June 24, 2008, we issued 1,073,299 shares of our common stock to institutional investors at $8.12 per shares resulting in aggregate gross proceeds of approximately $8.7 million.
Research and Development
We are currently focusing on the areas of neurological disease, metabolic disease, and oncology. In order to support the advancement of RNAi compounds into these therapeutic areas, our initial research programs, which we intend to pursue over the course of the next 12 months, are designed (1) to directly deliver the RNAi compound into a compartment, such as into the cerebral spinal fluid of the spinal cord for our initial disease target, ALS, and (2) to optimize the delivery method and technology necessary to make RNAi compounds available at the appropriate disease site by systemic administration, as for our programs in diabetes, obesity or cancer. Since we commenced operations, research and development has comprised a significant proportion of our total operating expenses and is expected to comprise the majority of our spending for the foreseeable future.
There are risks in any new field of drug discovery that preclude certainty regarding the successful development of a product. We cannot reasonably estimate or know the nature, timing and costs of the efforts necessary to complete the development of, or the period in which material net cash inflows are expected to commence from, any product candidate. Our inability to make these estimates results from the uncertainty of numerous factors, including but not limited to:
• our ability to advance product candidates into pre-clinical research and clinical trials;
• the scope and rate of progress of our pre-clinical program and other research and development activities;
• the scope, rate of progress and cost of any clinical trials we commence;
• the cost of filing, prosecuting, defending and enforcing patent claims and other intellectual property rights;
• clinical trial results;
• the terms and timing of any collaborative, licensing and other arrangements that we may establish;
• the cost and timing of regulatory approvals;
• the cost of establishing clinical and commercial supplies of our product candidates and any products that we may develop;
• the cost and timing of establishing sales, marketing and distribution capabilities;
• the effect of competing technological and market developments; and
• the effect of government regulation and insurance industry efforts to control healthcare costs through reimbursement policy and other cost management strategies.
Failure to complete any stage of the development of our product candidates in a timely manner could have a material adverse effect on our operations, financial position and liquidity. A discussion of the risks and uncertainties associated with completing our projects on schedule, or at all, and the potential consequences of failing to do so, are set forth under the heading “Risk Factors” in this prospectus.
Licenses
We have entered into relationships with academic institutions and research foundations and may seek to enter into additional licenses with pharmaceutical and biotechnology companies. We also may enter into strategic alliances to expand our RNAi intellectual property portfolio and to potentially accelerate our development


27


programs by gaining access to technology and funding, including equity sales, license fees and other revenues. For each product that we develop that is covered by the patents licensed to us pursuant to one of the license agreements we have entered into, including the material licenses discussed below, we are obligated to make additional payments upon the attainment of certain specified product development milestones.
University of Massachusetts Medical School and Imperial College
As part of the January 8, 2007 contribution of assets by CytRx, we became a party to a number of exclusive and non-exclusive license agreements with UMMS. The exclusive license agreements from UMMS cover potential applications of proprietary RNAi technology in the treatment of ALS, obesity, type 2 diabetes and cancer. As consideration for these licenses, CytRx made cash payments to UMMS totaling $171,000 and issued a total of approximately 1,548,000 shares of CytRx common stock at the fair market price on the date of the transaction of approximately $0.99 per share, or $1.5 million, for financial statement purposes. Pursuant to these licenses assigned from CytRx, we have assumed the obligation to pay annual license maintenance fees in an aggregate amount of $130,000. Additionally, we were assigned from CytRx a license from the Imperial College of Science, Technology & Medicine. This license provides the exclusive rights to intellectual property covering a drug screening method using RIP 140, which, according to a June 2004 study published in theProceedings of the National Academy of Sciences of the United States of America, is a nuclear hormone corepressor believed to regulate fat accumulation. As consideration for the license, CytRx made cash payments to Imperial College totaling $87,000 and issued a total of 75,000 shares of CytRx common stock, valued at the market price of CytRx common stock at the date of the transaction of $1.44 per share for financial statement purposes, or $108,000. Pursuant to this license we have assumed the obligation to make royalty payments based on sales of products developed using this technology.
The drug screening technology licensed from Imperial College and the RNAi technology licensed from UMMS had not yet achieved technological feasibility at the time of their license by CytRx, had no alternative future uses and, therefore, no separate economic value and, accordingly, the total value of the consideration was expensed by CytRx as research and development for the year ended December 31, 2004. In accordance with accounting for transfers between entities under common control, such licenses were transferred onto our books and recorded with a zero cost basis.
Further, we have directly entered into one non-exclusive license agreement, three exclusive license agreements and an invention disclosure agreement with UMMS for which we paid cash of $453,000 and issued 462,112 shares of our common stock valued at $2.3 million. The invention disclosure agreement has an initial term of three years and provides the option to negotiate licenses to certain RNAi technologies discovered at UMMS. Pursuant to the four license agreements, we paid up-front fees in an aggregate amount of $77,500 and additional license fees in an aggregate amount of $175,000 upon the completion of the $17 million financing from CytRx. Further, we pay annual license maintenance fees in an aggregate amount of $42,500.
Additionally, in connection with all of our licenses with UMMS, including those assigned to us by CytRx as well as those entered into directly between us and UMMS, we are obligated to pay specified royalties on net sales of products covered by the licensed patents, subject to minimum annual royalties. Beginning on January 1, 2012, the minimum annual royalty payments for all UMMS licenses, in the aggregate, will be $210,000 and beginning on January 1, 2016, the minimum annual royalty payments for all UMMS licenses, in the aggregate, will be $365,000. Furthermore, in connection with all of our licenses with UMMS, we are obligated to expend at least $3,300,000 per year, in the aggregate, for the development of products in connection with the licensed technology. For the licenses we entered into directly with UMMS, this obligation continues until the earlier of three years after the effective date of the licenses or the commencement of a Phase II clinical trial on a product developed in connection with the licensed technology.
Cold Spring Harbor
We have also directly entered into a license agreement with Cold Spring Harbor Laboratory (“CSHL”) for shRNA (small hairpin RNA), for which we paid $50,000 and agreed to make future milestone and royalty payments upon successful development and commercialization of products. CSHL has also agreed to grant a


28


non-exclusive license in the research field to up to three companies that qualify as bona fide collaborators with us, provided that, each such additional licensee shall pay CSHL an additional license fee of $100,000 and an annual license maintenance fee of $100,000. Furthermore, CSHL has agreed to grant a non-exclusive license in the therapeutic field to up to three companies that qualify as co-marketers, except that each such co-marketer licensee shall pay to CSHL an additional license fee of $250,000 and an annual license maintenance fee of $75,000.
As consideration for the license granted to us by CSHL, we paid up-front fees of $50,000 and an additional $50,000 on the one year anniversary of the effective date of the license agreement with CSHL. Further we pay an annual license maintenance fee of $75,000. Additionally, we agreed to pay CSHL a royalty payment dependent on net sales of the products covered by the license agreement with CSHL.
Basis of Presentation
RXi was incorporated as Argonaut Pharmaceuticals, Inc., in Delaware, on April 3, 2006 (date of incorporation) by CytRx and our four scientific founders, and we changed our name to RXi Pharmaceuticals Corporation on November 28, 2006. From April 3, 2006 until January 8, 2007, no activities were conducted at the RXi level.
The financial statements of RXi included in this prospectus for the periods through December 31, 2006 have been disaggregated, or “carved-out,” of the financial statements of CytRx, as our “predecessor,” which were audited by BDO Seidman, LLP, an independent registered public accounting firm. These carved-out financial statements form what we refer to herein as the financial statements of the predecessor, and include both direct and indirect expenses. The historical direct expenses consist primarily of the various costs for technology license agreements, sponsored research agreements and fees paid to scientific advisors. Indirect expenses represent expenses incurred by CytRx on behalf of RXi that have been allocated to RXi. The indirect expenses are based upon (1) estimates of the percentage of time spent by individual CytRx employees working on RXi matters by year and (2) allocations of various expenses associated with each employee including salary, benefits, rent associated with an employee’s office space, accounting and other general and administrative expenses. The percentage of time spent by individual CytRx employees was then multiplied by the allocation of various expenses associated with those employees to develop an allocation of expense per employee and the sum of such allocations for these employees equals the total expense allocation for the year. RXi’s financial information as of December 31, 2006 and 2007 and for the periods ended March 31, 2008 and 2007 are referred to in this prospectus as the financial information of the successor, and includes expenses incurred by RXi in its RNAi therapeutic programs, as well as an allocation of corporate services provided by CytRx. In addition, the net intercompany activities between the predecessor and CytRx have been accumulated into a single caption entitled “Parent company’s net deficit.”
In 2003, CytRx entered into several technology license agreements with UMMS related to RNAi technologies. CytRx subsequently entered into other RNAi-related technology agreements with UMMS and other parties, as well as four sponsored research agreements pursuant to which CytRx funded RNAi research activities. Three of these sponsored research agreements were with UMMS and one of the sponsored research agreements was with Massachusetts General Hospital. On January 8, 2007, RXi entered into a contribution agreement with CytRx under which CytRx assigned and contributed to RXi substantially all of its RNAi related technologies and assets, and we commenced operations in January 2007.
Management believes the assumptions underlying the carve-out financial information are reasonable; however, RXi’s financial position, results of operations and cash flows may have been materially different if it was operated as a stand-alone entity as of and for the periods presented.
Financial Information
The periods ended December 31, 2006 and 2005 as well as the cumulative financial information for the period from January 1, 2003 (date of inception) through December 31, 2006 for our predecessor and the financial information of the successor as of December 31, 2007 and 2006 and the cumulative financial information for the period from January 1, 2003 (date of inception) to December 31, 2007 have been audited


29


by our independent registered public accounting firm, BDO Seidman, LLP, which also previously audited CytRx’s consolidated financial statements for the years ended December 31, 2007, 2006 and 2005. The information presented as of and for the three-month periods ended March 31, 2008 and 2007 as well as the cumulative financial information for the period from January 1, 2003 (date of inception) through March 31, 2008 is unaudited and has been prepared on the same basis as the audited financial statements and includes all adjustments, consisting of only normal recurring adjustments, necessary for the fair presentation of this information in all material respects. The results of any interim period are not necessarily indicative of the results of operations to be expected for a full fiscal year.
Critical Accounting Policies and Estimates
Use of Estimates
Management’s discussion and analysis of our financial condition and results of operations include the predecessor’s financial statements for the periods through December 31, 2006, and the successor’s financial statements for the year ended December 31, 2007 and for the three months ended March 31, 2008 and 2007. The preparation of these financial statements requires management to make estimates, allocations and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, management evaluates its estimates, including those related to impairment of long-lived assets, accrued liabilities and certain expenses. We base our estimates about the carrying values of assets and liabilities that are not readily apparent from other sources on historical experience and on other assumptions believed to be reasonable under the circumstances. Actual results may differ materially from these estimates under different assumptions or conditions. Additionally, the financial information included here may not necessarily reflect the financial position, operating results, changes in our invested equity and cash flows in the future or what they would have been had we been a separate, stand-alone entity during the periods presented.
Our significant accounting policies are summarized in Note 2 to our financial statements. We believe the following critical accounting policies involve significant judgments and estimates used in the preparation of our financial statements.
Revenue Recognition
To date, we have not recognized any revenue. Nonrefundable license fee revenue is recognized when collection is reasonably assured, when no continuing involvement on our part is required and payment of the license fee represents the culmination of the earnings process. Nonrefundable license fees received subject to future performance by us, or credited against future payments due us, are deferred and recognized when we have met our performance obligations, or upon termination of the agreement and all related obligations thereunder. Our revenue recognition policy may require us in the future to defer significant amounts of revenue.
Research and Development Expenses
Research and development costs are expensed as incurred and consist of direct and overhead-related expenses. Expenditures to acquire technologies, including licenses, which are utilized in research and development and that have no alternative future use are expensed when incurred. Technology we develop for use in our products is expensed as incurred until technological feasibility has been established after which it is capitalized and depreciated.
Stock-Based Compensation
Prior to January 1, 2006, CytRx accounted for its stock based compensation plans under the recognition and measurement provisions of Accounting Principles Board No. 25, “Accounting for Stock Issued to Employees” (“APB 25”), and related interpretations for all awards granted to employees. Under APB 25, when the exercise price of options granted to employees equals the market price of the common stock on the date of grant, no compensation expense is recorded. When the exercise price of options granted to employees is less


30


than the market price of the common stock on the date of grant, compensation expense is recognized over the vesting period. CytRx did not allocate any APB No. 25 stock compensation expense to the predecessor for the years ended December 31, 2005 and 2004.
The statement of expenses for our predecessor as of and for the year ended December 31, 2006 reflects the impact of Statement of Accounting Standard (“SFAS”) 123(R) “Share-Based Payment (Revised 2004)” (“SFAS 123(R)”) on CytRx. Share-based compensation expense recognized by CytRx related to the predecessor under SFAS 123(R) for the year ended December 31, 2006 was $46,000 and was part of the allocable general and administrative expenses of CytRx. Such amounts have been reduced by our estimate of forfeitures of all unvested awards. Results for periods prior to January 1, 2006 have not been restated to retrospectively apply SFAS 123(R).
We have adopted SFAS 123(R), and compensation cost for all share-based payments, based on the grant date fair value estimated in accordance with the provisions of SFAS 123(R), is recognized as an expense over the requisite service period.
The fair value of each option grant is estimated using the Black-Scholes option-pricing model, with the following weighted average assumptions used for grants during the three months ended March 31, 2008 and for the year ended December 31, 2007: risk-free interest rate of 4.50%; expected volatility of 108.7%; expected life of the options of 6.0 years; and no dividend. Based on CytRx’s historical experience, we estimated an annualized forfeiture rate of 4.0% for options granted to employees and 2.1% for options granted to senior management and no forfeiture rate for options issued to directors. Any change in actual forfeitures from our historical experience could result in a corresponding change in the amount of compensation expenses recorded in any single quarterly or annual period.
We account for equity instruments issued to non-employees in accordance with the provisions of SFAS 123(R), Emerging Issues Task Force Issue (“EITF”)No. 96-18, “Accounting for Equity Instruments that are Issued to other than Employees for Acquiring, or in Conjunction with Selling Goods or Services” andEITF 00-18, “Accounting Recognition for Certain Transactions involving Equity Instruments Granted to Other Than Employees, as amended,” which require that such equity instruments be recorded at their fair value on the measurement date. The measurement of share-based compensation generally is subject to periodic adjustment as the underlying equity instruments vest.
Non-employee share-based compensation charges generally are amortized over the vesting period on a straight-line basis. In certain circumstances, option grants to non-employees are immediately vested and have no future performance requirements by the non-employee and the total share-based compensation charge is recorded in the period of the measurement date.
Valuation of Common Stock
Management of CytRx determined that the aggregate fair value of the technologies and assets contributed to us was approximately $17.2 million as of January 8, 2007 based, in part, upon the advice of Sanli Pastore & Hill, Inc., an independent third-party valuation advisor, engaged by management of CytRx for this purpose. The actual fair value of the contributed technologies and assets as of January 8, 2007 may have been different. Based on this valuation by CytRx, CytRx was issued a total of 7,040,318 shares, at a price of $2.45 per share. For financial reporting purposes, we recorded the technologies and assets contributed to us at the historical cost basis of CytRx as of January 8, 2007 of $48,000.
In determining the value of the assets of RXi, management of CytRx considered the definition of fair market value, as: “The price at which the property would change hands between a willing buyer and a willing seller when the former is not under any compulsion to buy and the latter is not under any compulsion to sell, both parties having reasonable knowledge of the relevant facts.” CytRx management relied primarily upon the “reproduction cost valuation method,” which included analysis of five components of cost: (i) material, (ii) labor, (iii) overhead, (iv) developer’s profit, and (v) entrepreneurial incentive. CytRx management also considered the “market approach valuation method,” which included analysis of the increase in the market stock price of CytRx common stock on the date of the announcement that CytRx had contributed its RNAi


31


assets to us and the current market conditions for RNAi-based companies, but accorded less weight (10%) to this method than to the reproduction cost valuation method (90%).
Subsequently, on April 30, 2007, we issued 3,273,292 additional shares of our common stock to CytRx in exchange for CytRx’s investment in of $17.0 million. Management of CytRx and RXi determined that the fair market value of RXi as of April 30, 2007 was approximately $45.0 million and the value of our common stock as of this date was $5.00 per share, based in part, upon the further advice of the third-party valuation advisor originally engaged by management of CytRx in connection with the January 8, 2007 contribution and assuming the issuance of 462,112 shares to UMMS pursuant to our license agreements with them. The fair market value was determined based on a combination of the reproduction cost approach discussed above, as well as the “market capitalization increase approach” and the “guidelines public company method — book value multiplier approach” discussed below.
Due to the fact that we are a discovery stage company and the amounts, if any, of future revenues remained uncertain and projected revenues and profits could not be made, it was determined that the reproduction cost approach was one appropriate analysis to undertake as cost approach methods are generally applicable when the subject intangible asset is new and when it is a fungible property. The reproduction cost valuation method was elected, which estimates the cost to construct, at current market price as of the date of the analysis, an exact duplicate or replica of the subject intangible asset, using the same materials, production standards, design layout, and quality of workmanship as the subject intangible asset. As stated above, the reproduction intangible asset will include the same adequacies, superadequacies, and obsolescence as the subject intangible asset. The reproduction cost valuation method includes analysis of five components of cost: (i) material, (ii) labor, (iii) overhead, (iv) developer’s profit and (v) entrepreneurial incentive. Because the reproduction cost approach may not reflect the earning power of new technology or the ultimate market share that may be obtained, it was determined that only limited consideration should be given to this approach and its value was weighted at 10%.
The CytRx market approach valuation method included an analysis of the increase in market capitalization since January 8, 2007 and a comparison of CytRx’s market capitalization to three other RNAi based companies, as well as significant public announcements by CytRx occurring since January 8, 2007 and general public news announcements relating to RNAi technology since January 8, 2007. Based on these factors and taking into account potential market overreaction and other news in non-RNAi operations, only limited consideration to this approach to valuation was given and its value was weighted at 10%.
The guideline public company method — book value multiplier valuation approach involves an evaluation of market transactions in business securities that can provide objective, empirical data for developing valuation ratios to apply in a business valuation. The valuation process for RXi applied a comparative analysis of RXi with the following publicly traded companies in the same industry: Sirna Therapeutics, Inc., Alnylam Pharmaceuticals, Inc. and Nastech Pharmaceuticals Co Inc. The relationship of the market value of invested capital of each guideline company was applied to each company’s respective underlying net asset value in order to obtain market value of invested capital to book value multiple. The market value of invested capital to book value multiple calculated from the guideline companies method was then applied to obtain a pre-money fair market value of our total assets. Because this method of valuation is most appropriate when comparing companies with similar operations when no future income-stream projections are available, management weighted this approach’s value at 80%.
Our common stock was registered and began trading publicly on March 12, 2008. As a result, the actual value of a common share may be materially different than the fair value per share determined using any of the prior valuations discussed above.
Impairment of Long-Lived Assets
We review long-lived assets for impairment on an annual basis, as of December 31, or on an interim basis if an event occurs that might reduce the fair value of such assets below their carrying values. An impairment loss would be recognized based on the difference between the carrying value of the asset and its estimated fair value, which would be determined based on either discounted future cash flows or other


32


appropriate fair value methods. If our estimates used in the determination of either discounted future cash flows or other appropriate fair value methods are not accurate as compared to actual future results, we may be required to record an impairment charge.
Results of Operations
For the three month period ended March 31, 2008, our net loss was $2.6 million, compared to a net loss of $1.4 million for the three month period ended March 31, 2007. The loss increased by $1.2 million or approximately 86%.
For the year ended December 31, 2007, our net loss was $11.0 million, compared to a net loss of $2.4 million for the year ended December 31, 2006. The loss increased by $8.6 million or approximately 358%. We incurred net losses of approximately $2.4 million and $2.2 million for the years ended December 31, 2006 and 2005, respectively, based on the methodology used in carving out our financial information from CytRx as described elsewhere in this prospectus. Reasons for the variations in the losses between the periods are discussed below.
Revenue
Since we are a discovery-stage biopharmaceutical company, we have not generated any revenues since inception through March 31, 2008. Accordingly, for accounting purposes we are considered a development stage company.
Research and Development Expense (in thousands)
                     
  For the Three Months Ended March 31,  For the Years Ended December 31, 
  2008  2007  2007  2006  2005 
  (Successor)  (Successor)  (Successor)  (Predecessor)  (Predecessor) 
 
Research and development expense $882  $543  $3,273  $1,298  $1,929 
Common stock and stock options issued for research and development expense  40      120       
Research and development non-employee stock-based compensation expense  166   281   1,043   212   151 
Fair value of common stock issued in exchange for licensing rights        2,311   262    
                     
Total research and development expense
 $1,088  $824  $6,747  $1,772  $2,080 
                     
Research and development expense consists primarily of costs related to (i) compensation and other related costs for our personnel dedicated to research and development activities, (ii) the UMMS license agreements, (iii) the collaboration and invention disclosure agreements pursuant to which UMMS agreed to disclose certain inventions to CytRx and us and to provide CytRx and us with the right to acquire an option to negotiate exclusive licenses for those disclosed technologies, (iv) the sponsored research agreements with both UMMS and Massachusetts General Hospital, and (v) the compensation for our SAB members. We expect research and development expenses to increase substantially for the foreseeable future as we engage in discovery and development activities for RNAi therapeutics. Total research and development expenses for the three months ended March 31, 2008 were $1.1 million compared to $824,000 for the three months ended March 31, 2007. The increase of $264,000 is explained below. Total research and development expenses for year ended December 31, 2007 were $6.7 million, compared to total research and development expenses for the year ended December 31, 2006, of $1.8 million. The $4.9 million increase in total research and development expense between the two years is explained below.
Research and development expense increased $264,000, or 32.0%, from $824,000 for the three month period ended March 31, 2007, to $1.1 million in the three month period ended March 31, 2008 due to higher


33


staff and supplies costs, partially offset by lower costs associated with non-employee stock based compensation. Research and development expense in the three month period ended March 31, 2008 consisted primarily of costs related to (i) compensation and other related costs for our personnel dedicated to research and development activities, ii) the UMMS license agreements, (iii) the collaboration and invention disclosure agreements pursuant to which UMMS agreed to disclose certain inventions to CytRx and us and to provide CytRx and us with the right to acquire an option to negotiate exclusive licenses for those disclosed technologies, and (iv) the compensation for our SAB members. We expect research and development expenses to increase as we expand our discovery and development activities for RNAi therapeutics.
Research and development expense increased $2.0 million, or 154%, from $1.3 million in the year ended December 31, 2006, to $3.3 million in the year period ended December 31, 2007. This increase was due to thestart-up costs of setting up the RXi laboratory in Worcester, Massachusetts, hiring research and development staff, including our Vice President of Pharmaceutical Development, and fees to UMMS and Cold Spring Harbor which were partially offset by a $828,000 decrease in expenses for sponsored research agreements. For the year ended December 31, 2007, we made no payments for sponsored research agreements, while in the year ended December 31, 2006, we spent $828,000 on such agreements. In addition, acquired in-process research and development expense was $830,000 for the year ended December 31, 2007, when we had no similar expense during the year ended December 31, 2006. This expense consisted of $430,000 in cash (which does not include the additional expense of $2.3 million in stock referred to in “Fair value of RXi common stock issued in exchange for licensing rights”) paid to UMMS and a total of $400,000 to other parties for the right to additional intellectual property.
Research and development expenses decreased $631,000, or 32.7%, from $1.9 million for the year ended December 31, 2005, to $1.3 million for the year ended December 31, 2006. The decrease was mainly due to a $609,000 decrease in sponsored research agreements expense partially offset by increases in other research and development expenses.
Common Stock and Stock Options Issued for Research and Development Expense
The expense of common stock and stock options issued for research and development costs increased $40,000 in the three month period ended March 31, 2008, compared to the three month period ended March 31, 2007, when the expense was zero. This increase was due to the issuance of common stock options to our employees.
The expense of common stock and stock options issued for research and development costs increased $120,000 for the year ended December 31, 2007, compared to the year ended December 31, 2006, when the expense was zero. This increase was due to the issuance of stock options to our employees which were valued under SFAS 123(R).
Research and Development Non-Employee Stock-Based Compensation Expense
As compensation to SAB members and consultants, and in connection with the acquisition of RNAi technology, we issued shares of common stock and stock options to purchase shares of our common stock. For financial statement purposes, we valued these shares of common stock and stock options at their fair value. Fluctuation in SAB stock-based compensation expense results from variations in the quantity, vesting and valuation of common stock options granted to SAB members.
Non-cash research and development expenses related to non-employee stock based compensation for the three month period ended March 31, 2008 was $166,000, compared to non-cash research and development expenses related to non-employee stock based compensation of $281,000 for the same period in the prior year. The decrease of $115,000, or 41%, was due to a decrease in stock option expense for SAB members.
Non-cash research and development expenses related to non-employee stock based compensation for the year ended December 31, 2007 was $1.0 million, compared to non-cash research and development expenses related to non-employee stock based compensation of $212,000 for the same period in the prior year. The increase of $788,000, or 372%, was due to an increase in stock option expense for SAB members.


34


Non-cash research and development expenses increased $61,000, or 40.4%, from $151,000 for the year ended December 31, 2005, to $212,000 for the year ended December 31, 2006. The increase was due to an increase in stock option expense for SAB members.
Fair Value of Common Stock Issued in Exchange for Licensing Rights
Fair value of RXi common stock issued in exchange for licensing rights increased $2.0 million, or 763%, from $262,000 for the year ended December 31, 2006 to $2.3 million for the year ended December 31, 2007. This expense consisted of $2.3 million in stock, valued for financial statement purposes at $5.00 per share, referred to above in “Research and Development Expense,” paid to UMMS for the right to additional intellectual property.
Fair value of CytRx common stock issued in exchange for licensing rights increased $262,000 for the year ended December 31, 2006, compared to the year ended December 31, 2005, when we had no similar expense. The increase was due to a common stock grant to UMMS for a new license agreement in the year ended December 31, 2006, which was valued at $262,000, or $1.75 per share. No similar grant was made in the year ended December 31, 2005.
There was no expense for the fair value of common stock issued for licensing rights for the three month periods ended March 31, 2008 and 2007.
General and Administrative Expense (in thousands)
                     
  For the Three Months Ended March 31,  For the Years Ended December 31, 
  2008  2007  2007  2006  2005 
  (Successor)  (Successor)  (Successor)  (Predecessor)  (Predecessor) 
 
General and administrative expense $1,202  $588  $3,735  $633  $129 
Common stock and stock options issued for general and administrative expense  423      931       
                     
Total general and administrative expense
 $1,625  $588  $4,666  $633  $129 
                     
General and administrative expenses include all direct and indirect administrative salaries and general corporation expenses. Prior to December 31, 2007, indirect expenses were allocated based upon (1) estimates of the percentage of time spent by individual CytRx employees working on our matters and (2) allocations of various expenses associated to each employee including salary, benefits, rent associated with an employee’s office space, accounting and other general and administrative expenses. The percentage of time spent by individual CytRx employees was then multiplied by the amount of various expenses associated to the various employees to develop an allocation of expense per employee. The expense allocation per individual employee is then summed to come to the total expense allocation for the year. In addition, general and administrative expense include certain expenses incurred with the formation of RXi which are directly associated with us, such as legal and accounting expenses, as well as other similar expenses.
General and administrative expenses were $1.6 million for the three months ended March 31, 2008, compared to $588,000 for the three months ended March 31, 2007. The increase of $1.0 million or 176.4% was due to higher staff-related costs, including $423,000 in share-based compensation expense, and to costs associated with being a public company, including legal, printing and other costs related to our SEC filings and investor relations costs, partially offset by the elimination of the allocation of indirect costs from CytRx. General and administrative expenses include all direct and indirect administrative salaries, professional services, which include consultants, legal fees, audit and tax fees and general corporation expenses.
General and administrative expense increased $3.1 million, or 490%, from $633,000 for the year ended December 31, 2006, to $3.7 million for the year ended December 31, 2007. This increase resulted from the expense of establishing RXi as a separate public company, and included $1.6 million in staff-related costs,


35


legal and accounting expenses of $1.3 million, consulting and other professional services expense of $150,000, Board of Directors fees and expenses of $200,000, and rent expense of $100,000. The allocation of CytRx expense increased $373,000, or 210%, from $178,000 for the year ended December 31, 2006, to $551,000 for the year ended December 31, 2007. The increase in the allocation of expense was directly due to the increased time CytRx’s management spent on our matters.
The share-based compensation for general and administrative costs increased $423,000 in the three month period ended March 31, 2008, compared to the three month period ended March 31, 2007, when the expense was zero. This increase was due to the issuance of stock options to our employees and directors which were valued under SFAS 123(R).
The share-based compensation expense for general and administrative costs increased $931,000 in the year ended December 31, 2007, compared to the year ended December 31, 2006, when the expense was zero. This increase was due to the issuance of stock options to our employees and directors which were valued under SFAS 123(R).
General and administrative expense increased $504,000, or 390.7%, from $129,000 for the year ended December 31, 2005 to $633,000 for the year ended December 31, 2006. This increase was related to positioning us to function as a stand-alone company and included increased legal expense in the amount of $195,000 for general corporate matters and additional expense allocations (based upon estimates of additional time spent by certain members of the CytRx management) of CytRx management’s expense of $89,000, or 100%, from $89,000 in the year ended December 31, 2005, to $178,000 for the year ended December 31, 2006.
The higher percentage of general and administrative expense as a percentage of the overall expense for the year ended December 31, 2007 compared to the year ended December 31, 2006 reflects our beginning to operate on a stand-alone basis. Total general and administrative expense was $633,000 for the year ended December 31, 2006 and $129,000 for the year ended December 31, 2005. General and administrative expense as a percentage of total expense for the years ended December 31, 2007, 2006 and 2005 was 41.0%, 26.3% and 5.8%, respectively, of the total expense. The relatively low general and administrative expense levels for the prior years are indicative of the fact that the research activities were performed by independent third parties, which required less managerial oversight and administrative activity during the predecessor period as compared to the successor period. We expect general and administrative expense to increase for the foreseeable future as we continue to operate as an independent public company.
From time to time, we expect to issue shares of our common stock or warrants or options to purchase shares of our common stock to consultants and other service providers in exchange for services. For financial statement purposes, we will value these shares of common stock, common stock options, and warrants at the fair value, or at the value of the services received, whichever is more reliably measurable.
Interest Income
Interest income was $75,000 for the three months ended March 31, 2008, compared to no interest income for the three months ended March 31, 2007. This increase was due to interest earned on our cash and cash equivalents during the first quarter of 2008, while we had minimal cash, cash equivalents or short-term investments during the first quarter of 2007.
Interest income for the year ended December 31, 2007 was $448,000 due to the interest earned on the net $15.0 million of cash paid to us for additional equity. In prior periods we had no interest income because CytRx met our funding requirements and we had no separate cash, cash equivalents or short-term investments. We expect to have interest income in future periods based on our account balances from our funding by CytRx, and potentially from additional capital we may raise in the future or that we may receive from partners.
Income Taxes
Prior to January 2007, we operated as an integral part of CytRx. The tax benefits and associated research tax credits related to the carved-out expenses benefit CytRx since the carved-out RXi activities are recorded in the consolidated financial statements of CytRx. Because the carve-out tax benefits belong to CytRx, we are


36


not given credit for the tax losses or research and development tax credits in the accompanying financial statements. RXi, the successor company, has incurred tax losses since it began operations. A tax benefit would have been recorded for losses incurred since January 8, 2007; however, due to the uncertainty of realizing these assets, a valuation allowance was recognized which fully offset the deferred income tax assets.
Liquidity and Capital Resources
In April 2007, we issued 3,273,292 shares of common stock (valued at approximately $5.00 per share, based in part, upon the advice of the third-party valuation advisor and assuming the issuance of 462,112 shares to UMMS pursuant to our license agreements with them) in exchange for $15.0 million in cash from CytRx and the settlement of our inter-company account payable due to CytRx of approximately $2.0 million. On June 24, 2008, we issued 1,073,299 shares of our common stock to institutional investors at $8.12 per share resulting in aggregate gross proceeds of approximately $8.7 million. We have not had any revenue since inception nor are any revenues expected for the foreseeable future; however, it will be necessary for us to fund our operations, including general and administrative expenses as well as expenditures for research and development. We believe that we have adequate capital, in the form of cash on hand and short-term investments, to support our currently planned level of operations through the second half of 2009. In the future, we will be dependent on obtaining financing from third parties in order to maintain our operations and to meet our obligations to UMMS and other licensors. We currently have no commitments from any third parties to provide us with capital or additional funding. We cannot assure that additional debt or equity or other funding will be available to us on acceptable terms, or at all. If we fail to obtain additional funding when needed, we would be forced to scale back, or terminate, our operations, or to seek to merge with or to be acquired by another company.
Net Cash Flow from Operating Activities
Net cash used in operating activities was approximately $1.7 million for the three month period ended March 31, 2008, compared to $1.1 million net cash used in operating activities for the three month period ended March 31, 2007. The increase of approximately $600,000 in the use of cash resulted primarily from a net loss of $2.6 million, less the add back of non-cash items of $629,000 related to stock-based compensation, $29,000 related to depreciation, $172,000 related to accrued interest on short term investments and $111,000 related to changes in current assets and liabilities.
Net cash used in operating activities was approximately $6.0 million for the year ended December 31, 2007. This use of cash resulted primarily from a net loss of $11.0 million, less the add back of non-cash items of $2.3 million related to common stock issued for license rights, $2.1 million related to stock-based compensation, $36,000 related to depreciation, $172,000 related to non cash interest earned and $689,000 related to changes in current liabilities.
Net cash used in operating activities was approximately $2.1 million for the year ended December 31, 2006. This use of cash resulted primarily from a net loss of $2.4 million, less the add back of non-cash items of $262,000 related to common stock issued for license rights, $212,000 related to stock-based compensation and $181,000 related to changes in current assets and current liabilities.
Net cash used in operating activities was approximately $2.5 million for the year ended December 31, 2005. This use of cash resulted primarily from a net loss of $2.2 million, less the add back of non-cash items of $151,000 related to stock-based compensation and $468,000 related to changes in current liabilities.
Net Cash Flow from Investing Activities
Net cash provided by investing activities was approximately $9.8 million for the three month period ended March 31, 2008, compared to net cash used of $1,000 for the three month period ended March 31, 2007. The increase of approximately $9.8 million in cash provided by investing activities was primarily due to the redemption of short-term investments in the first quarter.


37


Net cash used in investing activities was approximately $10.0 million for the year ended December 31, 2007, which primarily included the purchase of United States Treasury Bills held as short-term investments in the amount of $11.8 million, the purchase of equipment and furnishings in the amount of $229,000, offset by the redemption of United States Treasury Bills held as short-term investments in the amount of $2 million.
There was no net cash used in investing activities for the year ended December 31, 2006.
Net cash used in investing activities was approximately $50,000 for the year ended December 31, 2005, which represented a payment for lease deposit.
Net Cash Flow from Financing Activities
Net cash provided by financing activities was $0 for the three month period ended March 31, 2008, compared to $1,065,000 for the three month period ended March 31, 2007. This decrease was primarily due to the absence of cash advances from our former parent company during the three month period ended March 31, 2008.
Net cash provided by financing activities was $17.8 million for the year ended December 31, 2007, which represented proceeds of $15.5 million from the issuance of common stock, $2.0 million in cash advances from CytRx, and $330,000 from the exercise of common stock options.
Net cash provided by financing activities was $2.1 million and $2.6 million for the year ended December 31, 2006 and 2005 respectively. These amounts represent cash advances received from CytRx.
Contractual Obligations
We acquire assets still in development and enter into research and development arrangements with third parties that often require milestone and royalty payments to the third party contingent upon the occurrence of certain future events linked to the success of the asset in development. Milestone payments may be required, contingent upon the successful achievement of an important point in the development life-cycle of the pharmaceutical product (e.g., approval of the product for marketing by a regulatory agency). If required by the arrangement, we may have to make royalty payments based upon a percentage of the sales of the pharmaceutical product in the event that regulatory approval for marketing is obtained. Because of the contingent nature of these payments, they are not included in the table of contractual obligations.
These arrangements may be material individually, and in the event that milestones for products covered by these arrangements are reached, the aggregate charge to expense could be material to the results of operations in any one period. In addition, these arrangements often give us the discretion to unilaterally terminate development of the product, which would allow us to avoid making the contingent payments; however, we are unlikely to cease development if the compound successfully achieves clinical testing objectives. Contractual obligations that will require future cash payments as of December 31, 2007 are as follows:
                     
  Non-Cancelable  Cancelable 
  Operating
  Employment
     License
    
  Leases(1)  Agreements(2)  Subtotal  Agreements(3)  Total 
 
Years ending December 31
                    
2008 $180  $942  $1,122  $716  $1,838 
2009  105   448   553   666   1,219 
2010     290   290   616   906 
2011     105   105   816   921 
2012           1,126   1,126 
thereafter           10,325   10,325 
                     
Total $285  $1,785  $2,070  $14,265  $16,335 
                     
(1)Operating leases are primarily facility and equipment related obligations with third-party vendors. Operating lease expenses during the three month periods ended March 31, 2008 and 2007 were $46,000 and $0,


38


respectively, and for the years ended December 31, 2007, 2006 and 2005 were approximately $264,000, $2,000 and $2,000, respectively.
(2)Employment agreement obligations include management contracts, as well as scientific advisory board member compensation agreements. Certain agreements provide for minimum salary levels, adjusted annually at the discretion of RXi’s Board of Directors, as well as for minimum annual bonuses.
(3)License agreements primarily relate to our obligations with UMMS associated with RNAi and, for future periods, represent minimum annual royalty payment obligations.
We apply the disclosure provisions of Financial Accounting Standards Board (“FASB”) Interpretation No. (“FIN”) 45, “Guarantor’s Accounting and Disclosure Requirements for Guarantees, Including Indirect Guarantees of Indebtedness of Others” (“FIN 45”), to its agreements that contain guarantee or indemnification clauses. We provide (i) indemnification of varying scope and size to certain investors, licensors and other parties for certain losses suffered or incurred by the indemnified party in connection with various types of third-party claims; and (ii) indemnifications of varying scope and size to officers and directors against third party claims arising from the services they provide to us. These indemnifications give rise only to the disclosure provisions of FIN 45. To date, we have not incurred costs as a result of these obligations and we do not expect to incur material costs in the future, and we maintain liability insurance that is expected to be applicable to costs that may arise pursuant to these obligations. We have not accrued any liabilities in our financial statements related to these indemnifications.
Recently Issued Accounting Standards
In February 2007, the FASB issued SFAS No. 159,The Fair Value Option for Financial Assets and Financial Liabilities(“SFAS No. 159”). SFAS No. 159 permits entities to choose to measure many financial assets and financial liabilities at fair value. Unrealized gains and losses on items for which the fair value option has been elected are reported in earnings. SFAS No. 159 is effective for fiscal years beginning after November 15, 2007. The adoption of SFAS No. 159 did not have a significant impact on our financial statements.
In June 2007, the FASB ratified the consensus on EITF IssueNo. 06-11,Accounting for Income Tax Benefits of Dividends on Share-Based Payment Awards(“EITF 06-11”).EITF 06-11 requires companies to recognize the income tax benefit realized from dividends or dividend equivalents that are charged to retained earnings and paid to employees for non-vested equity-classified employee share-based payment awards as an increase to additional paid-in capital.EITF 06-11 is effective for fiscal years beginning after September 15, 2007. The adoption did not have a significant impact on our financial statements.
In June 2007, the FASB ratified the consensus reached on EITF IssueNo. 07-3,Accounting for nonrefundable Advance Payments for Goods or Services Received for Use in Future Research and Development Activities(“EITF 07-3”), which requires that nonrefundable advance payments for goods or services that will be used or rendered for future research and development activities be deferred and amortized over the period that the goods are delivered or the related services are performed, subject to an assessment of recoverability.EITF 07-3 will be effective for fiscal years beginning after December 15, 2007. The adoption ofEITF 07-3 did not have a significant impact on our financial statements.
In December 2007, the FASB issued SFAS No. 141 (revised 2007), “Business Combinations,” or SFAS No. 141R. SFAS No. 141R broadens the guidance of SFAS No. 141, extending its applicability to all transactions and other events in which one entity obtains control over one or more other businesses. It broadens the fair value measurement and recognition of assets acquired, liabilities assumed and interests transferred as a result of business combinations. SFAS No. 141R expands on required disclosures to improve the statement users’ abilities to evaluate the nature and financial effects of business combinations. SFAS No. 141R is effective for fiscal years beginning after December 15, 2008. We do not expect the adoption of SFAS No. 141R to have a material impact on our financial statements.


39


Off-Balance Sheet Arrangements
We have not entered into off-balance sheet financing arrangements, other than operating leases.
Quantitative and Qualitative Disclosures about Market Risk
The primary objective of our investment activities is to preserve our capital to fund operations. We also seek to maximize income from our investments without assuming significant risk. To achieve our objectives, we maintain a portfolio of cash equivalents and investments in a variety of securities of high credit quality. As such, our primary exposure to market risk is interest income sensitivity, which is affected by the general levels of U.S. interest rates particularly because a significant portion of our investments are in short-term debt securities issued by the U.S. government and institutional money market funds. As of March 31, 2008, we had cash and cash equivalents of $9.9 million. We actively monitor changes in interest rates. We have no foreign currency or commodity investments. Due to the short-term duration of our investments in cash and cash equivalents and the low risk associated with our investments in high credit quality securities, we would not expect our operating results or cash flows to be affected to any significant degree by the effect of a sudden change in market interest rates on our securities portfolio. If interest rates had varied by 100 basis points in the three-month ended March 31, 2008, it would not have had a material effect on our results of operations or cash flows for the period.


40


BUSINESS
Overview
We are a discovery-stage biopharmaceutical company pursuing the development and potential commercialization of proprietary therapeutics based on RNA interference (RNAi) for the treatment of human diseases. We believe RNAi-based therapeutics have the potential to effectively treat a broad array of diseases by interfering with (sometimes referred to as silencing) the expression of targeted disease-associated genes. Our initial focus is on the treatment of neurological diseases, metabolic diseases and cancer.
RXi was founded by CytRx and four prominent researchers in the field of RNAi, including Dr. Craig Mello, recipient of the 2006 Nobel Prize for Medicine for his co-discovery of RNAi, and Blais University Chair of Molecular Medicine at the University of Massachusetts Medical School, or UMMS. We began operations as a majority-owned subsidiary of CytRx Corporation in January 2007 for the purpose of accelerating the discovery of RNAi therapeutics previously sponsored by CytRx.
RNAi is a naturally occurring mechanism for the regulation of gene expression that has the potential to be harnessed to selectively inhibit the activity of any human gene. As evidenced by Kim and Rossi’s review published in March 2007 inNature Reviews Genetics,it is believed that this inhibition may potentially treat human diseases by “turning off” genes that lead to disease. While no therapeutic RNAi products have been approved to date, there has been significant growth in the field of RNAi development and potential therapeutic applications. This growth is driven by the potential ability to use RNAi to rapidly develop lead compounds that specifically and selectively inhibit a target gene. By utilizing our expertise in RNAi and the RNAi technology platform we have licensed from prominent researchers, we intend to identify lead compounds and advance towards pre-clinical and clinical development programs in the following four therapeutic areas:
• Neurology.  Initially, we are pursuing research in ALS (amyotrophic lateral sclerosis, commonly known as Lou Gehrig’s Disease). Some forms of ALS are caused by defects in a gene called SOD1. Early preclinical studies conducted by our advisors, Dr. Tariq Rana and Dr. Zuoshang Xu at UMMS, showed promising results in animals using an RNAi compound to selectively inhibit the SOD1 gene. We are refining and extending this work and, if successful, will move into formal preclinical development. We also intend to leverage our experience related to the delivery of RNAi therapeutics in the central nervous system to explore development of RNAi-based treatments for neurodegenerative diseases other than ALS, including Alzheimer’s Disease.
• Metabolic disease.  One of our scientific co-founders and scientific advisory board members, Dr. Michael Czech, is a prominent metabolic disease researcher. We have in-licensed intellectual property developed by Dr. Czech on genes that appear to be important regulators of metabolism. Studies conducted in Dr. Czech’s laboratory at UMMS and by others at Imperial College of London have demonstrated that inactivation of one of these genes, called RIP140, can cause fat cells to metabolize rather than store fat. Mice in these studies that did not express RIP140 remained lean and non-diabetic even when maintained on a high-fat diet. We are currently designing RNAi compounds targeting RIP140 as a potential treatment for obesity and obesity-related type 2 diabetes. We also continue to evaluate genes in Dr. Czech’s database for candidate targets.
• Oncology.  We are initiating a program to develop RNAi drugs for use in oncology. This strategy is led by key RXi scientific advisors, Dr. Greg Hannon and Dr. Nicholas Dean, both of whom are prominent researchers in targeting oncogene pathways. Additionally, our management team has expertise in developing programs targeting genes involved in cancer. Dr. Pamela Pavco, our Vice President for Pharmaceutical Development, previously managed the pre-clinical programs targeting genes involved with cancer while at Sirna Therapeutics, Inc. (acquired by Merck & Co.).
• Additional indications.  There are many well-studied genes associated with numerous diseases that have been identified but have been difficult to target with normal medicinal chemistry. We believe, based on both published studies and our own research, that RNAi technology may play an important role in targeting these genes and potentially treating these diseases. With the pioneering work being


41


done in developing the RXi technology platform, we believe that our efforts may lead to the discovery of many more drug candidates than can be advanced into clinical trials. For research on target genes in our portfolio that are not funded internally, we will seek to identify and work with partners in the discovery and development process to build our development pipeline.
We believe that we possess a strong intellectual property portfolio. We have secured exclusive and non-exclusive licenses from academic institutions under certain issued and pending patents and patent applications covering RNAi technologies in the following three categories: (i) therapeutic targets, (ii) chemistry and configurations of RNAi and (iii) delivery of RNAi within the body.
We have an accomplished Scientific Advisory Board which includes Craig C. Mello, Ph.D., Tariq Rana, Ph.D., Gregory Hannon, Ph.D., Michael Czech, Ph.D., Nicholas Dean, Ph.D., Victor Ambros, Ph.D. and Nassim Usman, Ph.D. (collectively, “SAB members”). SAB members participate in scientific planning meetings which are typically held every three to six months. During such meetings, our management team and SAB members review the progress of our research and licensing efforts and provide technological input including suggestions for new experiments, suggestions regarding the therapeutic relevance of target genes and suggestions regarding new technologies we may want to consider licensing. SAB members also provide input on potential academic collaborators as well as updates on the latest scientific advances in the RNAi field. In addition to regularly held scientific planning meetings, we also hold scientific planning meetings on specific topics related to our discovery programs. For example, during a meeting scheduled to discuss the design of the chemical configuration of RNAi compounds, Drs. Mello, Rana, Hannon and Dean provided input regarding what designs might be the most effective and patents were filed on potentially novel design aspects that arose from this discussion. Further, along with our management team, SAB members participate in conferences and discussions with potential alliance partners, during which they respond to technological inquiries and field questions in their areas of expertise regarding licensed technology they helped to develop.
Our SAB members are not employees and have other professional commitments to which they must devote substantial time. Each has agreed, however, to commit between 100 to 140 hours per year to their RXi service, including attendance of the meetings and conferences described above. These relationships with our SAB members are governed by SAB advisory board agreements, each of which is terminable at any time by either party. Upon termination, the SAB Member would have no further obligation or duty to perform any advisory services to us or to remain as an advisor in any capacity.
Our Competitive Strengths
We believe we are well positioned to compete successfully in the RNAi-based therapeutics market due to the following strengths we possess:
• Accomplished scientific advisors with extraordinary experience in RNAi, including Dr. Craig Mello, recipient of the 2006 Nobel Prize in Medicine for co-discovering RNAi.
• Strong early intellectual property position covering
• Key therapeutic targets,
• Proprietary, potent nanotransporter delivery of active RNAi to tissues, and
• Novel approaches to RNAi chemistry.
• Initial focus on significant unmet medical needs, including
• Neurological disorders,
• Metabolic disease, and
• Oncology.
• Management that is experienced in commercializing products, including our President and Chief Executive Officer, Tod Woolf, Ph.D.


42


Introduction to the Field of RNAi Therapeutics
RNAi is a naturally-occurring phenomenon where short double-stranded RNA molecules interfere with the expression of targeted genes. RNAi technology takes advantage of this phenomenon and potentially allows us to effectively interfere with particular genes within living cells by designing RNA-derived molecules targeting those genes. RNAi is regarded as a significant advancement, as evidenced by the journal Science’s selection of RNAi as the “Breakthrough of the Year” in 2002, and by the awarding of the 2006 Nobel Prize in Medicine to the co-discoverers of RNAi, including Dr. Craig Mello, an RXi founder and scientific advisory board member.
RNAi offers a novel approach to the drug development process because, as described below under “The RNAi Mechanism”, RNAi compounds can potentially be designed to target any one of the thousands of human genes. In contrast, an article published in the December 2005 edition ofDrug Discovery Todayby Andreas P. Russ and Stefan Lampel has demonstrated that only a subset of the proteins encoded in the genome are able to be targeted efficiently by traditional medicinal chemistry or antibody-based approaches. The specificity of RNAi is achieved by an intrinsic well-understood biological mechanism based on designing the sequence of an RNAi compound to match the sequence of the targeted gene. The specificity of RNAi may be sufficient to permit therapeutic targeting of only a single gene and, importantly, may even selectively destroy expression from a single abnormal copy of a gene while preserving expression from a normal copy (“allele-specific” targeting). This is critical in diseases such as cancer and neurodegenerative disorders that are often caused by abnormal copies of genes.
The RNAi Mechanism
The human genetic code (human genome) is made of a double-strand of DNA (the double helix) that acts as an instruction manual for the production of the roughly 50,000 human proteins. Proteins are the molecular parts that allow cells and organisms to live and function. With rare exceptions, each cell in the human body has the entire complement of genes. However, only a subset of these genes directs the production of proteins in any particular cell type. For example, a muscle cell produces muscle-specific protein, whereas a skin cell does not.
In order for a gene to guide the production of a protein, it must first be copied into a single-stranded chemical messenger (messenger RNA) and then translated into protein. RNA interference (RNAi) is a naturally occurring process by which a particular messenger RNA can be destroyed before it is translated into protein. The process of RNAi can be artificially induced by introducing a double-stranded fragment of RNA corresponding to a particular messenger RNA into a cell. A complex set of proteins within the cell called RISC (RNA-Induced Silencing Complex) recognizes this double-stranded RNA fragment and splits the double-strands apart. One of the strands of RNA then binds to its corresponding cellular messenger RNA and destroys this targeted RNA. Thus, RNAi provides a method to potentially block the creation of the proteins that cause disease, as depicted in the following figure.
Figure 1 — Mechanism of RNA interference within a cell
(GRAPH)


43


Since gene expression controls most cellular processes, the ability to inhibit gene expression provides a potentially powerful tool to treat human diseases. Furthermore, since the human genome has already been decoded, and based on numerous gene-silencing reports, we believe that RNAi compounds can readily be designed to interfere with the expression of any specific gene.
A 2007 independently researched report published by Business Insights Ltd. indicates that the potential market for RNAi therapeutics is substantial. We believe that the RNAi platform may create therapeutics with significant advantages over traditional drug development methods, which we intend to utilize in our product development. These potential advantages, which we have identified based on published reviews as well as our own research, include:
• high specificity for targeted genes;
• high potency (low doses);
• potential interference with the expression of any gene; and
• accelerated development of lead compounds.
RXi’s RNAi Therapeutic Platform
RNAi Compound Design
RNAi compounds are made from a strand or strands of RNA that are manufactured by a nucleic acid (RNA) synthesizer. The synthesizer is programmed to assemble a strand of RNA of a particular sequence using the four kinds of nucleotide units (Adenine (“A”), Uracil (“U”), Cytidine (“C”) and Guanosine (“G”)) that match a small segment of the targeted gene. The hallmark of an RNAi compound is that it has a double-stranded region. The compounds can be of various lengths of nucleotide units (nt). As seen in Figure 2 below, the two strands can have overhangs (as shown on the far left), or they can have blunt ends (as shown in the middle and right). A single strand can form an RNAi compound by forming a structure shown on the right referred to as a hairpin.
Figure 2 — Types of RNAi Compounds
(GRAPH)
The length and shape can affect the activity and hence the potency of the RNAi in cells. The form of RNAi that was the first to be pursued for development as a human therapeutic was a short double-stranded RNA that included at least one overhanging single-stranded region, known as small interfering RNA, or siRNA which we also refer to as classic siRNA and can be seen in figure 2 above.
Figure 3 — First generation of RNAi pursued for human therapeutics: classic siRNA
(GRAPH)


44


In the case of classic siRNA, double-stranded RNA with single-stranded overhangs is used. The two strands comprising the RNA have bases that are complementary to each other in order to create double-stranded regions; that is, an “A” on one strand is paired with a “U” on the other, and a “C” on one strand is paired with a “G” on the other, creating double-stranded regions. The pairing holds the two strands together creating double-stranded RNA. The overhangs that are at the ends of the double-stranded RNA do not have a matching partner and thus these single-stranded bases in the overhang area are exposed to nucleases in the environment which can degrade the molecule. The classic siRNA therapeutics are about 19 to 23 base pairs long.
We believe, based on our own research, that classic siRNAs have limitations and drawbacks that may limit the usefulness of those agents as human therapeutics, and that we may be able to utilize the technologies we have licensed to optimize RNAi for use as a human therapeutic agent, such as to improve potency or efficacy, or to reduce manufacturing steps and costs. For example, the RNA can be chemically modified in a manner that reduces its sensitivity to nucleases, which are enzymes that attack and degrade RNA. Likewise, it is our expectation that removing the single-stranded overhang regions will be a way of reducing the rate of spurious degradation of the RNAi, as single-stranded RNA is more susceptible to degradation than double-stranded RNA. The length range of 19 to 23 nucleotides can also be varied to yield more potent RNAi compounds. Introducing “mismatches” in the double-stranded region, that is, discrete internal portions of the duplex region that do not form good basepairs between the two strands, also may be a useful way of improving the potency of the resulting RNA. In certain instances, we have the option of using hairpin structures, or a single-strand of nucleic acid which folds back on itself to form a double-stranded region, as the RNAi construct. These hairpin constructs may have improved efficacy as inhibitory agents, and we hope to demonstrate these may also improve the manufacturing process by requiring that only a single strand of RNA be produced, rather than two separate strands as is the case with classic siRNA.
We prefer to use RNAi of the form without the overhangs as originally described by Dr. Craig Mello in the seminal patent application on RNAi. The RNAi compounds we prefer can also optionally be of the hairpin shape. These RNAi compounds are distinct from the siRNA compounds used by many other companies developing RNAi therapeutics, and we call this class of compounds rxRNA(tm). Our internal research has demonstrated rxRNA to be a promising alternative to classic siRNA used by other companies developing RNAi therapeutics, and which we believe, based on our internal research, is:
• up to 100x more active than conventional siRNA (depending on the target site),
• nuclease resistant,
• readily manufactured, and
• potentially more specific for the target gene.
Depending on which delivery method is selected, stabilizing RNAi compounds by chemical modification may be critical for RNAi activity in animal models and in humans. The stabilization may be necessary to protect the RNAi compounds from being degraded by enzymes that exist in bodily fluids. Many of our employees and scientific advisory board members are accomplished in the field of chemically modified RNAi design; for example, Dr. Woolf, our President and CEO, was a co-inventor of STEALTH brand chemically modified RNAi and Drs. Rana and Dean have conducted published research involving the design elements of RNAi. We will employ their collective expertise to design chemically modified RNAi compounds. We have in-licensed technology on chemically stabilized RNAi compounds that will also form the basis of our chemical modification strategy.
Delivery
Our founding scientists recognized very early that the key to therapeutic success with RNAi lies in delivering intact RNAi compounds to the target tissue and the interior of the target cells. We plan to work with chemically synthesized RNAi compounds that are optimized for stability and efficacy. We intend to rely on a combination of delivery at the site of action and formulation with delivery agents to achieve optimal delivery to specific target tissues.


45


One of our founding scientists, Dr. Tariq Rana, has developed novel and proprietary nanotransporters that have been shown to deliver RNAi compounds to target tissues in animal models. A nanotransporter is a chemical that is mixed with an RNAi compound to form minute particles which transport RNAi compounds to tissues. We have an exclusive therapeutic license to Dr. Rana’s technology, which have been used to deliver RNAi compounds to the mouse liver and obtain exceptionally low dose (1 mg/kg) gene specific inhibition. Delivery to the liver is critical for many diabetes, obesity and other metabolic targets. In addition, Dr. Rana’s nanotransporters are of a defined size and are readily formulated.
Figure 4 — Schematic Diagram of a Nanotransporter
(GRAPH)
The nanotransporter is a chemical that is mixed with RNAi compound to form minute particles which transport RNAi to tissues. The nanotransporter has a core to which layers (shown as G1, G2, and G3 in the figure above) are added by chemical synthesis. The final layer has positive charges (shown as Zs in the figure above) which attract and bind to negatively charged RNAi compounds. Based on Dr. Rana’s research described above, which was included in anACS Chemical Biology Journalarticle in 2007, we believe that nanotransporter delivery has the following potential advantages, which we intend to utilize in the development of our products:
• inhibition of liver target with 1 mg RNAi compound per kg of body weight;
• no immune stimulation detected;
• defined particle size; and
• readily formulated.
Therapeutic Programs and Markets
By utilizing our expertise in RNAi compound design and delivery, we initially intend to identify lead compounds in neurology, metabolic disease and oncology. After identifying compounds, we intend to begin preclinical development in these focus areas as appropriate.
Neurology
Market opportunity
ALS is a progressive neurodegenerative disease that attacks nerve cells in the brain and spinal cord resulting in muscle weakness and eventual paralysis. The mortality rate is high; according to the ALS Association, 80% of individuals with ALS die within five years of diagnosis. The ALS Association estimates that there are over 120,000 cases of ALS worldwide, and over 5,000 new cases are diagnosed in the United States annually. An October 2006 review inNeuron, a neuroscience journal, estimates that approximately 90% of ALS cases are sporadic, and the remaining 10% are familial. 20% to 30% of the familial forms of ALS have been linked to dominant mutations in the SOD1 gene that result in defective protein products that aggregate in cells, causing progressive motor-neuron degeneration. We plan to address this medical need by seeking to develop an RNAi compound as a therapy for this disease.


46


Our ALS Program
We are generating RNAi compounds that we believe target the form of ALS caused by a dominant defect in the SOD1 gene. Mice expressing a human SOD1 mutant gene and developing the symptoms of ALS are available and widely used as a laboratory model for human ALS. Early preclinical studies in this mouse model conducted by our advisors Dr. Rana and Dr. Xu at UMMS showed promising results in animals using an RNAi compound to selectively inhibit the production of SOD1. In a series of studies using this model, Dr. Xu administered a proprietary chemically modified RNAi compound into the cerebral spinal fluid of the mice with an implantable pump. This strategy resulted in significantly reduced levels of expression SOD1 mRNA and protein. We are refining and extending this work and, if successful, intend to move into formal preclinical development.
As part of our neurology program we intend to optimize further our advisors’ RNAi chemistry and local delivery techniques to extend to other diseases of the central nervous system. For example, in addition to ALS, many neurodegenerative diseases exist for which no effective therapies are available, including Alzheimer’s Disease. In many of these cases, molecular targets have been identified that are difficult to access by conventional small molecule- or antibody-based approaches. We believe that the knowledge gained in its discovery and development activities related to ALS may allow the company to rapidly pursue additional related therapeutic areas.
Metabolic Disease
Market Opportunity
Obesity and type 2 diabetes are major health problems and affect hundreds of millions of people worldwide. The World Health Organization estimates that, on a worldwide basis, there are more than 300 million cases of obesity and 159 million cases of type 2 diabetes. The American Obesity Association, or AOA, states that there are currently more than 60 million cases of obesity in the United States, and the American Diabetes Association reports that there are more than 16 million cases of type 2 diabetes in the United States. According to the AOA, obesity increases the risk of illness from about 30 serious medical conditions and has been found to be the largest environmental influence for the prevalence of diabetes in a population.
Our Obesity/Type 2 Diabetes Program
Our scientific co-founder and scientific advisory board member Dr. Michael Czech is a prominent researcher in the area of metabolic disease. Dr. Czech has studied gene expression linked to obesity and diabetes. We have in-licensed intellectual property discovered by Dr. Czech on a database of genes which appear to be important regulators of metabolism and may target these genes in future development programs for obesity and type 2 diabetes. One of the genes identified by Dr. Czech, RIP140, appears to be a master-regulator of metabolism. Studies have shown that inactivation of RIP140 can convert fat cells from a fat storage to a fat burning phenotype. For example, in studies using a “knock-out” mouse model for diabetes and obesity, the deletion of the RIP140 gene results in mice that remain lean and non-diabetic even when maintained on a high fat diet. RIP140 is a member of a protein class that does not appear to be effectively treatable with traditional small molecule-approaches; however, we believe that it may be treatable with an RNAi approach. We have acquired exclusive rights to develop RNAi products targeting the RIP140 gene from UMMS and the Imperial College of London.
Oncology
Market Opportunity
Due to the potential ability of RNAi technology to interfere with the expression of genes, the sequences of which are well known, we believe that RNAi technology may be able to target such genes and, therefore, potentially treat such diseases. In contrast, various experts, including Andreas P. Russ of the University of Oxford, have noted that traditional small molecule- or antibody-based approaches seem only able to access


47


some of the known targets, resulting in a large number of so-called “non-drugable” genes. Unfortunately, many of these non-drugable genes have been implicated in the multi-step process driving the development of malignant cancers. An example of such a group of genes includes the Bcl-2 family of genes. Many of these genes are known to regulate responses to conventional chemotherapy drugs, but the conventional technologies have so far not been able to control this group of genes directly. We believe that treatment with RNAi compounds that inhibit gene expression, if successfully developed; have the potential to be useful in concert with existing chemotherapeutics. Selecting targets from such families could potentially offer a significant competitive advantage over non-RNAi based approaches.
RNAi may potentially be employed at several facets of cancer development. Delivery of RNAi compounds to tumors and silencing of oncogenes or drug resistance genes in animal models has been demonstrated in literature, including a September 2006 study published in the journalNucleosides, Nucleotides, & Nucleic Acids,in which a RNAi compound was successfully delivered and used invivo to inhibit gene expression, causing cell death in human breast carcinoma tumors in mice. RNAi compounds may potentially also be delivered to endothelial cells in the tumor vasculature in order to potentially inhibit angiogenesis.
RXi Oncology Program
Studies to date indicate that it is highly unlikely that non-formulated, non-modified RNAi compounds will be effective as therapeutics in oncology. Key characteristics of the molecule that will need to be developed to increase efficacy include metabolic stability and potency in vivo while maintaining an appropriate therapeutic index. We have access to proprietary delivery technology which has demonstrated increased RNAi efficacy in normal mice. This technology has yet to be evaluated in animal models of cancer. We are currently working to establish nanotransporter formulations appropriate for oncology targets.
Alliance Partners in Therapeutic Areas
We are actively seeking to leverage our technology platform by working with larger pharmaceutical and biotechnology partners in the partners’ fields of interest. Furthermore, the RXi team has experience targeting genes in virtually every major therapeutic area. With the pioneering work now being done in developing our technology platform, we believe we will discover many more drug candidates than can be advanced in-house. For research on target genes in our portfolio that are not funded internally, we will seek to work with partners in the discovery and development process in these areas to build our development pipeline.
Business Strategy
We intend to use our intellectual property and expertise in RNAi to develop and potentially commercialize RNAi compounds. The key elements of our business strategy are as follows:
• We intend to finance the initial development of a limited number of RNAi drug candidates with our own capital resources and any financial resources that we may obtain from capital markets and partners. Our key therapeutic areas of interest are neurology, metabolic disease and oncology. We intend to develop drugs in these areas internally to establish significant value, at which point we may seek to partner them.
• We intend to seek partnerships with large pharmaceutical and biotechnology companies to leverage our intellectual property and expand our development pipeline. Such partnerships may include traditionally structured drug development and commercialization licenses, discovery and development collaborations, research and technology collaborations, and intellectual property licenses.
• We intend to maintain and continue to develop and enhance our RNAi technology platform by expanding our intellectual property position in RNAi compound chemistry, delivery and target sequences. To date, we have in-licensed RNAi technologies from various institutions and companies, including UMMS, Imperial College of London, Cold Spring Harbor Laboratories and TriLink


48


Biotechnologies. We intend to continue to enhance our technology platform through in-licensing in combination with internal and collaborative research and development programs.
• We intend to develop future RNAi technology improvements and believe we are well positioned to do so. Our management and advisors have developed much of the core technology in the field of oligonucleotide therapeutics, and more specifically RNAi. For example, our Scientific Advisory Board member, Dr. Nassim Usman, developed the standard synthesis chemistry used to manufacture RNAi compounds throughout the world while a fellow at MIT. Our CEO, Dr. Tod Woolf, co-developed STEALTH RNAi, which is one of the most commonly employed second generation RNAi chemistries, and our Vice President of Pharmaceutical Development, Dr. Pamela Pavco, developed the first modified RNAi tested in humans while she was at Sirna Therapeutics. Our advisors and scientists routinely meet to discuss novel approaches and improvements in our RNAi technology platforms to enhance our intellectual property portfolio.
• We may also seekincrease or decrease the number of securities to collaborate with governmentbe issued in this offering. Each increase (decrease) of 1.0 million shares and charitable institutions through grantsaccompanying common warrants offered by us would increase (decrease) the as adjusted amount of cash and funded research for our development programs.
Intellectual Property and Proprietary Rights
We have secured exclusive and non-exclusive rights to develop RNAi therapeutics by licensing key RNAi technologies and patent rights. Three categories of intellectual property rights important for successfully developing RNAi technology have been in-licensed. These rights are in the following areas:
• therapeutic targets,
• chemistrycash equivalents, working capital, total assets and configurations of RNAi compounds,total stockholders’ equity by approximately $0.4 million, assuming the assumed public offering price remains the same, no pre-funded warrants are issued, and
• delivery technology for RNAi.
Intellectual Property Rights to Key Therapeutic Targets
We have entered into the licenses described below to obtain rights to therapeutic targets against which we may seek to develop therapeutics.
Genetic diseases
We have exclusive and co-exclusive licenses from UMMS to technology and pending patent applications covering the design, synthesis and delivery of chemically modified RNAi andin vivomethods using RNAi to treat allele-specific genetic diseases such as ALS.
Metabolic control
We also have exclusive rights to technology, patents and pending patent applications covering RNAi that targets RIP140, a co-repressor of many nuclear receptors and a key factor involved in sugar uptake and oxidative metabolism, and consequently, diabetes and obesity. We are an exclusive licensee of UMMS’s technology establishing the key role of RIP140 in diabetes and insulin action. In addition, we have exclusive rights to technology, patents and pending patent applications covering the use of the endoplasmic reticulum stress response pathway in adipose cells to enhance whole body insulin sensitivity.
We also have an exclusive license from the Imperial College in London, England for technology, patents and pending patent applications directed to controlling oxidative metabolism and burning of fat in adipose tissues.
Infectious diseases
Based on our research, we believe that another promising area of RNAi-based therapeutics will be infectious diseases, especially viral diseases. We have exclusive rights from UMMS to technology, patents and pending patent applications covering treatment of cytomegalovirus related disorders using RNAi.


49


Intellectual Property Rights to Chemistry and Configurations of Therapeutically Useful RNAi
We have a non-exclusive license to the Mello and Fire foundational RNAi patent and associated applications covering the use of double stranded RNA to induce gene silencing which describes RNAi products, compositions and therapeutic RNAi methods. In addition, we have secured exclusive and co-exclusive rights to technologies, patents and pending patent applications directed to producing and deliveringin vivostable and potent RNAi therapeutics.
These rights include:
• Dr. Rana’s inventions which provide fundamental rules for designing chemically modified RNAi sequences suitable forin vivogene silencing, to which we have co-exclusive licenses in the therapeutic areas of type 2 diabetes, obesity, after deducting underwriting discounts and ALScommissions and estimated offering expenses payable by targeting mutant SOD1,us. The as adjusted information discussed above is illustrative only and CMV retinitis;
• Dr. Tuschl’s invention regarding RNAi therapeutics using double-stranded RNAs in the areas of type 2 diabetes, obesity, and ALS by targeting mutant SOD1, and CMV retinitis;
• Drs. Mello and Zamore’s invention regardingin vivoproduction of siRNA; and
• methods of triggering RNAiin vivo,will be adjusted based on particular RNA structural characteristics.
Intellectual Property Rights to Delivery of RNAi Compounds to Cells
We have exclusive and non-exclusive licenses to technologies for the efficient delivery of RNAi therapeutics to cells in cell cultureand/or in the intact organism. These technologies include:
• methodsthe actual public offering price and compositions, including useother terms of nanotransporters, for RNAi compound delivery which enable therapeutic gene silencing in cellsthis offering determined between us and animals which is licensed for all therapeutic areas and is one optional technology available to us to enhance the delivery of RNAi to tissues when using systemic (injected) RNAi; and
• inhibition of gene expression in fat cells using RNAi.
Summary of Patent Rights
In addition to our intellectual property, RXi files patent applications on a regular basis on our internally developed discoveries, such as RxRNA. The following table sets forth and summarizes the various patents that we have licensed from the various sources described above:
Subject Field
Inventor(s)
Priority Date
License*
Status
Drug discovery for diabetes and obesityMichael P. Czech
Silvia Corvera
09/27/1993Exclusive license for products in the field of drug discovery in type 2 diabetes and/or obesity.US Pat. 5,989,893
Pending elsewhere
RNAi in generalCraig C. Mello
Andrew Fire
Stephen Kostas
Mary Montgomery
Lisa Timmons
SiQun Zu Hiroaki
Tabara Samuel E.
Driver
12/23/1997Non-exclusive license to fundamental RNAi from Carnegie Institute of Washington.US Pat. 6,506,559
Pending elsewhere
Drug discovery using genomic databases for diabetes and obesityMichael P. Czech
Andrew
D. Cherniack
Adilson
L. Guilherme
10/20/2000Exclusive license for products in the field of drug discovery in type 2 diabetes and/or obesity.Pendingunderwriters at pricing.


50


 
Subject Field
Inventor(s)
Priority Date
License*
Status
dsRNA in generalThomas Tuschl,
Philip A. Sharp
Phillip D. Zamore
David P. Bartel
12/01/2000Non-exclusive license for RNAi use to inhibit (1) HCMV immediate early gene in retinitis (2) mutant SOD1 gene in ALS, and (3) gene targets in type II diabetes & obesity from UMMS, a co-owner of the patent.Pending
Engineered precursor to siRNA for in vivo production of siRNAPhillip D. Zamore
Gyorgy Hutvagner
Juanita McLachlan
Craig C. Mello
Alla Grishok
07/12/2001Exclusive license for RNAi use to inhibit (1) HCMV immediate early gene in retinitis (2) mutant SOD1 gene in ALS, and (3) gene targets in type II diabetes & obesity.Pending
In vivo gene silencing by chemically modified and stable siRNATariq M. Rana
Ya-Lin Chiu
09/25/2002Exclusive worldwide license to the treatment of CMV, ALS, diabetes & obesity for therapeutics, prophylactics or diagnostics.Pending
Allele specific inhibition by siRNA, especially SOD inhibition for the treatment of ALSZuoshang Xu
Phillip D. Zamore
11/04/2002Exclusive license on inhibition of SOD1 expression for the treatment of ALS including therapeutics, prophylactics and diagnostics.Pending
Delivery of siRNA using peptide conjugateTariq M. Rana11/26/2002Exclusive license for therapeutic, prophylactic or diagnostic healthcare applications in humans, including for ALS, diabetes and obesity.Pending
Allele specific inhibition by chemically modified siRNATariq M. Rana11/26/2002Exclusive license for therapeutic, prophylactic or diagnostic healthcare applications in humans including for ALS, diabetes and obesity.Pending
Screening for modulators of fat storageMalcolm Parker
Roger White
Goran Leonardsson
02/03/2003Exclusive license for screening methods for identifying compounds that are useful as modulators of fat storage from Imperial College, UK.Pending
Modulation of insulin sensitivity through stress proteinsSilvia Corvera06/19/2003Exclusive license for products in the field of drug discovery in type 2 diabetes and/or obesity.Pending
Chemically modified siRNA and their usesTariq M. Rana
Ya-Lin Chiu
08/05/2003Co-Exclusive license for therapeutic, prophylactic or diagnostic healthcare applications of RNAi for inhibition of human CMV immediate early gene expression, mutant SOD1 (ALS treatment), genes implicated in diabetes and obesity.Pending

51


Subject Field
Inventor(s)
Priority Date
License*
Status
Increase of insulin stimulated glucose regulation by a small molecule inhibitor of RIP140Michael P. Czech
Aimee Powelka
Adilson
L. Guilherme
Andrew
D. Cherniack
03/05/2004Exclusive license for drug discovery in type 2 diabetes and/or obesity with therapeutic, prophylactic, or diagnostic applications and products for treatment, prevention or diagnosis of type 2 diabetes and/or obesity.Pending
Efficient delivery of siRNA into cells and animalsTariq M. Rana08/11/2005Nonexclusive license for therapeutic, prophylactic or diagnostic healthcare applications in humans including for ALS, diabetes and obesity.Pending
Delivery of chemically modified siRNA using nanotransportersTariq M. Rana
(Zuoshang Xu)
01/26/2006Exclusive license for therapeutic, prophylactic or diagnostic healthcare applications in humans including for ALS, diabetes and obesity.Pending
Delivery of chemically modified siRNATariq M. Rana01/26/2006Exclusive license for therapeutic, prophylactic or diagnostic healthcare applications in humans including for ALS, diabetes and obesity.Pending
Gene silencing of cholesterol biosynthesis and other metabolic genes by chemically modified siRNATariq M. Rana01/26/2006Exclusive license for therapeutic, prophylactic or diagnostic healthcare applications in humans including for ALS, diabetes and obesity.Pending
Microwave assisted nucleic acid delivery systemTariq M. RanaNot yet filedNonexclusive license for therapeutic, prophylactic or diagnostic healthcare applications in humans including for ALS, diabetes and obesity.Invention disclosure
Methods and compositions for RNA interference in suspended cells or in whole bodyScott Hammond
Gregory Hannon
David Beach
Amy Caudy
Emily Bernstein
03/16/2001Non-exclusive license from Cold Spring Harbor Laboratory for use of short hairpin RNA for drug discovery and development.Pending
*Unless otherwise noted, the licenses are from UMMS.
License Agreements
University of Massachusetts Medical School and Imperial College London
In connection with the Contribution Agreement dated January 8, 2007, CytRx assigned to us their rights under four exclusive license agreements, one co-exclusive license agreement and one non-exclusive license agreement with UMMS, entered into between CytRx and UMMS and one patent license agreement entered into between CytRx, Imperial College Innovations Limited and Imperial College of Science and Technology, which cover potential therapeutic applications for proprietary RNAi technology in the treatment of specified diseases. Additionally, CytRx assigned to us their rights under a Collaboration and Invention Disclosure Agreement entered into between CytRx and UMMS.

52


As consideration for the licenses and collaboration and invention disclosure agreement assigned to us by CytRx, we agreed to assume and be responsible for all of the liabilities and obligations to the extent that such liabilities and obligations relate to the assigned licenses and agreement, including all of CytRx’s payment, performance and other obligations under these assigned licenses.
In connection with the licenses entered into with UMMS that were assigned to us by CytRx, we have assumed the obligation to pay to UMMS annual license maintenance fees and certain additional amounts upon the attainment of certain specified product development milestones. These licenses will expire upon the expiration of all patents licensed under the licenses or ten years after the effective date of such license if no patents have been issued within that ten year period and are terminable by either party upon an uncured breach by the other party. We are generally required to indemnify UMMS for losses incurred by UMMS based on the exercise of the licensed patents by us.
In connection with the license entered into with Imperial College Innovations Limited and Imperial College of Science and Technology, we have assumed the obligation to make defined milestone and royalty payments based on sales of products developed using this technology. This license will expire upon the expiration of all patents licensed under the license, is terminable by us upon three months written notice and terminable by either party upon an uncured breach by the other party.
On January 10, 2007, we entered into three exclusive licenses and one non-exclusive license with UMMS pursuant to which UMMS granted to us rights under certain UMMS patent applications to make, use and sell products related to applications of RNAi technologies in particular fields (see above, “— Summary of Patent Rights”).
Under these licenses, UMMS granted to us exclusive, worldwide licenses, with the right to sub-license, to three different patent families and a non-exclusive, worldwide license to a fourth patent family. As consideration for these licenses, we paid UMMS an up-front fee, reimbursed UMMS for previously incurred patent expenses and agreed to undertake to raise working capital by a specified date, agreed to expend a specified amount on the development of royalty-bearing products, and to meet a defined timeline relating to the clinical development of royalty-bearing products. Our obligation to raise working capital was satisfied when CytRx made a cash contribution to us of $17.0 million (before a $2.0 million reimbursement for expenses by us to CytRx) on April 30, 2007. Upon the completion of the $17.0 million financing from CytRx, we became obligated to pay UMMS additional licenses fees in an aggregate amount of $175,000, issued to UMMS approximately 308,075 shares of our common stock valued at $5.00 per share and thereafter to pay UMMS annual maintenance fees, commencing on January 1, 2008, and certain additional amounts upon the attainment of certain specified product development milestones, as discussed above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation.” We also will be required to pay to UMMS a percentage of income received from any sublicensees under these licenses and to pay expenses incurred by UMMS in prosecuting and maintaining the licensed patents.
These licenses will expire upon the expiration of all patents licensed under the licenses, are terminable by either party upon an uncured breach by the other party, and may be terminated by us for any reason following a specified notice period. We are generally required to indemnify UMMS for losses incurred by UMMS based on the exercise of the licensed patents by us.
Additionally, in connection with all of our licenses with UMMS, including those assigned to us by CytRx as well as those entered into directly between us and UMMS, we are obligated to pay specified royalties on net sales of products covered by the licensed patents, subject to minimum annual royalties, as discussed above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation.”
On January 10, 2007, we also entered into an invention disclosure agreement with UMMS pursuant to which UMMS is obligated, for a period of three years from the effective date of the invention disclosure agreement, to disclose to us any unrestricted inventions conceived or reduced to practice by UMMS related to therapeutic applications of RNAi technologies. Under the invention disclosure agreement, UMMS grants to us an option to negotiate the terms of a license to inventions disclosed by UMMS pursuant to the invention


53


disclosure agreement. If we exercise the option and are unable to reach agreement on the terms of any such license, we may elect to have an arbitrator determine the terms of such a license.
The invention disclosure agreement became effective on April 30, 2007, upon completion of the $17.0 million contribution by CytRx. The invention disclosure agreement is terminable by either party upon an uncured breach by the other party and by us at any time for any reason. As consideration for the rights granted to us under the invention disclosure agreement, upon completion of the $17.0 million contribution by CytRx, we issued to UMMS a total of 154,037 shares of our common stock and are obligated to pay UMMS specified fees on the effective date of the invention disclosure agreement and on each of the first and second anniversaries of the effective date of that agreement. We also will be obligated to pay UMMS a fee each time we exercise our right to negotiate a license under the invention disclosure agreement.
Cold Spring Harbor Laboratory
On March 15, 2007, we entered into a license agreement with Cold Spring Harbor Laboratory, or CSHL pursuant to which CSHL granted to us a non-exclusive, worldwide, royalty-bearing license under its commercial rights in the certain RNAi related patent applications and tangible biological materials that are necessary under the patent rights to develop, make and sell products that are covered by the license and to develop and perform services using at least one process covered by the patent rights (i) in relating to the use of short hairpin RNA (shRNA) for drug discovery or the development of therapeutic drugs and drug targets or use in a drug screening program and (ii) in the use of short hairpin RNA, by us and for our scientific research and development. Additionally, CSHL granted to us a non-exclusive, worldwide, royalty bearing license in certain know-how, technical information, research and development, information, test results and data which are owned or controlled by CSHL relating to both RNAi therapeutics and research.
CSHL has also agreed to grant a non-exclusive license in the research field, under substantially similar terms as are in the above mentioned license agreement to up to three companies that qualify as bona fide collaborators with us, except that each such additional licensee shall pay CSHL an additional license fee and an annual license maintenance fee. Furthermore, CSHL has agreed to grant a non-exclusive license in the therapeutic field under substantially similar terms as are in the CSHL license agreement to up to three companies that qualify as co-marketers, except that each such co-marketer licensee shall also pay to CSHL an additional license fee and an annual license maintenance fee.
We are generally required to indemnify and defend CSHL for and against losses incurred by CSHL based on the exercise of the licenses by us. The license agreement with CSHL remains in effect until the expiration of all issued patents within the patent rights covered by the agreement or for a period of 10 years if no patents have been issued during the term. We can terminate the agreement at any time within a specified notice period, but the obligation to pay the milestones and royalties survives.
Within 18 months after the effective date of the license agreement with CSHL, we were obligated to successfully undertake a public or private offering to raise or commit at least $10.0 million. This obligation was satisfied by the contribution by CytRx of $17.0 million on April 30, 2007.
Further, we are required to maintain insurance of not less than $1 million for injuries to any one person arising out of a single occurrence and $5.0 million for injuries to all persons arising out of a single occurrence. As of the date of the first sale of a product developed by us in connection with the license agreement with CSHL, we are required to obtain product liability insurance.
Other License Agreements
Consistent with our overall business strategy, we have enhanced our RNAi technology platform by entering into additional licenses for various aspects of RNAi technology, including:
• In January 2007, CytRx assigned to us a non-exclusive license to the Mello and Fire foundational RNAi patent owned by UMMS and the Carnegie Institution of Washington, which claims various aspects of RNAi or genetic inhibition by doublestranded RNA.


54


• In August 2007, we entered into a license agreement with TriLink Biotechnologies, Inc. for three RNAi chemistry technologies for all therapeutic RNAi applications, for which we paid an up-front fee and agreed to pay yearly maintenance fees, as well as future clinical milestone payments and royalty payments based on sales of therapeutic products developed from the licensed technologies.
• In October 2007, we entered into a license agreement with Dharmacon, Inc. (now part of Thermo Fisher Scientific Inc.), pursuant to which we obtained an exclusive license to certain RNAi sequences to a number of target genes for the development of our rxRNA compounds. Further, we have obtained the right to license additional RNAi sequences, under the same terms, disclosed by Thermo Fisher Scientific Inc. in its pending patent applications against target genes and have received an option for exclusivity for other siRNA configurations. As consideration for this license, we paid an up-front fee of $150,000 and agreed to pay future clinical milestone payments and royalty payments based on sales of siRNA compositions developed in connection with the licensed technology.
• In November 2007, we entered into a license agreement with Invitrogen IP Holdings, Inc. pursuant to which we were granted rights under four patents relating to RNA target sequences, RNA chemical modifications, RNA configurationsand/or RNA delivery to cells. As consideration for this license, we paid an up-front fee of $250,000 and agreed to pay yearly maintenance fees of the same amount beginning in 2008. Further, we are obligated to pay a fee for each additional gene target added to the license as well as a fee on the first and second anniversaries of the date we were granted consent to add the gene target to the list of those covered by the license. We have also been granted, for each gene target, an option to secure pre-clinical rightsand/or the clinical rights, for which we would be required to pay additional fees. Further, we are required to make future clinical milestone payments and royalty payments based on sales of therapeutic products developed from the licensed technologies.
Competition
We face significant competition in our research and development of RNAi-related pharmaceuticals. Competitors include large and small pharmaceutical, chemical and biotechnology companies, as well as universities, government agencies, and other private and public research organizations that are focusing their efforts in the RNAi field or are developing pharmaceuticals for similar diseases as we are targeting through our research and development efforts. Though at an early stage of development, the RNAi field is already intensely competitive and the competition is expected to increase. Development work on RNAi is still at an early stage, and we are aware of only six clinical trials using RNAi, namely trials for age-related macular degeneration by Opko Health, Inc. (f.k.a. Acuity Pharmaceuticals), Sirna Therapeutics (which was acquired by Merck & Co.), Allergan Inc. and Quark Biotech Inc., for respiratory syncytial virus by Alnylam Pharmaceuticals and for diabetic macular edema by Opko Health, Inc. Companies that are focusing their commercial efforts in the RNAi field include: Alnylam Pharmaceuticals, Sirna Therapeutics, Nastech Pharmaceutical Company Inc., Cequent Pharmaceuticals Inc., Nucleonics, Inc., Tacere Therapeutics Inc., Benitec Ltd., Opko Corp., Silence Therapeutics plc (formerly SR Pharma plc), Quark Pharmaceuticals, Inc., Rosetta Genomics Ltd., Calando Pharmaceuticals, Inc., and Isis Pharmaceuticals, Inc., as well as a number of the multinational pharmaceutical companies. A number of the multinational pharmaceutical companies also either have gene silencing product development programs or are collaborating with smaller biopharmaceutical companies. This competition will manifest itself not only in our potential product markets but also, and importantly at this stage in development of RNAi technology, in recruiting and retaining key scientific and management personnel, in securing strategic alliances, and in obtaining rights to key intellectual property.
Our RNAi-focused competitors, as well as companies in other fields, may be targeting the same diseases we are targeting. Competitive products for some of the disease indications that we have targeted are currently being marketed by other parties. Additional competitive products are under development and there may also be products under development that we are not aware of or products that may be developed in the future. With respect to ALS, Rilutek, which was developed by Aventis Pharma AG, is the only drug of which we are currently aware that has been approved by the FDA. Other companies are working to develop pharmaceuticals to treat ALS, including CytRx, Isis Pharmaceuticals, Inc., Aeolus Pharmaceuticals, Ono Pharmaceuticals, Trophos SA, Faust Pharmaceuticals SA and Oxford BioMedica plc. Also, since ALS belongs to a family of


55


similar diseases called neurodegenerative disease, which includes Alzheimer’s, Parkinson’s and Huntington’s diseases, a new treatment for one ailment potentially could be useful for treating others. There are many companies that are producing and developing drugs used to treat neurodegenerative diseases other than ALS, including Amgen, Inc., Cephalon, Inc., Ceregene, Inc., Elan Pharmaceuticals, plc, Forest Laboratories, Inc., H. Lundbeck A/S, Phytopharm plc, and Schwarz Pharma AG.
In addition, a number of products are currently being marketed by a variety of the multinational or other pharmaceutical companies for treating type 2 diabetes, including among others, the diabetes drug Avandia by GlaxoSmithKline PLC, Actos by Eli Lilly & Co., Glucophage and Junavia by Bristol-Myers Squibb Co., Symlin and Byetta by Amylin Pharmaceuticals, Inc. and Starlix by Novartis. For obesity, the drugs Acomplia by Sanofi-Aventis SA, Xenical by F. Hoffman-La Roche Ltd. and Meridia by Abbott Laboratories are presently on the market. Many major pharmaceuticals companies are also seeking to develop new therapies for these disease indications.
Competitors both in and outside of the RNAi field have financial resources, research and development staffs, and facilities that are, in most cases, substantially greater than ours or our strategic partners or licensees and are engaged in the research and development of pharmaceutical products that could compete with our potential products. To the extent that we seek to acquire, existing or potential new products, through license or otherwise, we will be competing with numerous other companies that may have a competitive advantage in identifying and evaluating these drug acquisition opportunities. Any products that we acquire will compete with products marketed by companies that, in many cases, will have substantially greater marketing resources than we have. The industry is characterized by rapid technological advances and competitors may develop products more rapidly and such products may be more effective than those currently under development or that may be developed in the future by our strategic partners or licensees.
Government Regulation
The United States and other developed countries extensively regulate the pre-clinical and clinical testing, manufacturing, labeling, storage, record-keeping, advertising, promotion, export, marketing and distribution of drugs and biologic products. The United States Food and Drug Administration (“FDA”) regulates pharmaceutical and biologic products under the Federal Food, Drug, and Cosmetic Act, the Public Health Service Act and other federal statutes and regulations.
To obtain approval of our future product candidates from the FDA, we must, among other requirements, submit data supporting safety and efficacy for the intended indication as well as detailed information on the manufacture and composition of the product candidate. In most cases, this will require extensive laboratory tests and pre-clinical and clinical trials. The collection of these data, as well as the preparation of applications for review by the FDA involve significant time and expense. The FDA also may require post-marketing testing to monitor the safety and efficacy of approved products or place conditions on any approvals that could restrict the therapeutic claims and commercial applications of these products. Regulatory authorities may withdraw product approvals if we fail to comply with regulatory standards or if we encounter problems at any time following initial marketing of our products.
The first stage of the FDA approval process for a new biologic or drug involves completion of pre-clinical studies and the submission of the results of these studies to the FDA. This data, together with proposed clinical protocols, manufacturing information, analytical data and other information submitted to the FDA, in an investigational new drug application, or IND, must become effective before human clinical trials may commence. Pre-clinical studies generally involve FDA regulated laboratory evaluation of product characteristics and animal studies to assess the efficacy and safety of the product candidate.
After the IND becomes effective, a company may commence human clinical trials. These are typically conducted in three sequential phases, but the phases may overlap. Phase I trials consist of testing the product candidate in a small number of patients or healthy volunteers, primarily for safety at one or more doses. Phase II trials, in addition to safety, evaluate the efficacy of the product candidate in a patient population somewhat larger than Phase I trials. Phase III trials typically involve additional testing for safety and clinical efficacy in an expanded population at multiple test sites. A company must submit to the FDA a clinical


56


protocol, accompanied by the approval of the Institutional Review Boards at the institutions participating in the trials, prior to commencement of each clinical trial.
To obtain FDA marketing authorization, a company must submit to the FDA the results of the pre-clinical and clinical testing, together with, among other things, detailed information on the manufacture and composition of the product candidate, in the form of a new drug application, or NDA, or, in the case of a biologic, a biologics license application, or BLA.
The amount of time taken by the FDA for approval of an NDA or BLA will depend upon a number of factors, including whether the product candidate has received priority review, the quality of the submission and studies presented, the potential contribution that the compound will make in improving the treatment of the disease in question, and the workload at the FDA.
The FDA may, in some cases, confer upon an investigational product the status of a fast track product. A fast track product is defined as a new drug or biologic intended for the treatment of a serious or life-threatening condition that demonstrates the potential to address unmet medical needs for this condition. The FDA can base approval of an NDA or BLA for a fast track product on an effect on a surrogate endpoint, or on another endpoint that is reasonably likely to predict clinical benefit. If a preliminary review of clinical data suggests that a fast track product may be effective, the FDA may initiate review of entire sections of a marketing application for a fast track product before the sponsor completes the application.
We anticipate that our products will be manufactured by our strategic partners, licensees or other third parties. Before approving an NDA or BLA, the FDA will inspect the facilities at which the product is manufactured and will not approve the product unless the manufacturing facilities are in compliance with the FDA’s current good manufacturing practice (“cGMP”), which are regulations that govern the manufacture, holding and distribution of a product. Manufacturers of biologics also must comply with the FDA’s general biological product standards. Our manufacturers also will be subject to regulation under the Occupational Safety and Health Act, the Environmental Protection Act, the Nuclear Energy and Radiation Control Act, the Toxic Substance Control Act and the Resource Conservation and Recovery Act. Following approval, the FDA periodically inspects drug and biologic manufacturing facilities to ensure continued compliance with the good manufacturing practices regulations. Our manufacturers will have to continue to comply with those requirements. Failure to comply with these requirements subjects the manufacturer to possible legal or regulatory action, such as suspension of manufacturing or recall or seizure of product. Adverse patient experiences with the product must be reported to the FDA and could result in the imposition of marketing restrictions through labeling changes or market removal. Product approvals may be withdrawn if compliance with regulatory requirements is not maintained or if problems concerning safety or efficacy of the product occur following approval.
The labeling, advertising, promotion, marketing and distribution of a drug or biologic product also must be in compliance with FDA and Federal Trade Commission requirements which include, among others, standards and regulations for off-label promotion, industry sponsored scientific and educational activities, promotional activities involving the internet, and direct-to-consumer advertising. We also will be subject to a variety of federal, state and local regulations relating to the use, handling, storage and disposal of hazardous materials, including chemicals and radioactive and biological materials. In addition, we will be subject to various laws and regulations governing laboratory practices and the experimental use of animals. In each of these areas, as above, the FDA has broad regulatory and enforcement powers, including the ability to levy fines and civil penalties, suspend or delay issuance of product approvals, seize or recall products, and deny or withdraw approvals.
We will also be subject to a variety of regulations governing clinical trials and sales of our products outside the United States. Whether or not FDA approval has been obtained, approval of a product candidate by the comparable regulatory authorities of foreign countries and regions must be obtained prior to the commencement of marketing the product in those countries. The approval process varies from one regulatory authority to another and the time may be longer or shorter than that required for FDA approval. In the European Union, Canada and Australia, regulatory requirements and approval processes are similar, in principle, to those in the United States.


57


Properties and Facilities
We entered into a lease agreement with Newgate Properties, LLC (an affiliate of Worcester Polytechnic Institute), dated September 25, 2007, for approximately 5,300 square feet of space at 60 Prescott Street, Worcester, Massachusetts, for a term of 20 months. The monthly rental fee is $15,035. We completed our move into this facility in December 2007, and we believe that the space will be suitable for our current needs.
Employees
As of July 23, 2008, we had 22 full-time employees, 13 of whom are engaged in research and development and 9 of whom are engaged in management, administration and finance. None of our employees are represented by a labor union or covered by a collective bargaining agreement, nor have we experienced any work stoppages.
Legal Proceedings
Although we are not currently involved in any legal proceedings, from time to time, we may become a party to various legal actions and complaints arising in the ordinary course of business.


58


MANAGEMENT
Our Directors, Executive Officers and Scientific Advisory Board Members
Our board of directors currently is comprised of five members who are divided into three classes. Each director will serve for a term ending on the date of the third annual meeting following the annual meeting at which such director was elected, except that the initial director in Class I, Tod Woolf, will serve for a term ending on the date of the annual meeting in 2011, the initial directors in Class II, Mark J. Ahn and Stephen S. Galliker, will serve for a term ending on the date of the annual meeting in 2009, and the initial directors in Class III, Sanford J. Hillsberg and Steven A. Kriegsman, will serve for a term ending on the date of the annual meeting in 2010, with each director to hold office until his or her successor is duly elected and qualified.
The following table sets forth information as to persons who serve as our directors and executive officers:
Name
Position
Age
Sanford J. Hillsberg(1)(2)Chairman of the Board of Directors60
Tod Woolf, Ph.D. President and Chief Executive Officer, Director44
Mark. J. Ahn, Ph.D.(1)(2)(3)Director45
Stephen S. Galliker(1)(2)(3)Director61
Stephen A. Kriegsman(3)Director66
Stephen J. DiPalmaChief Financial Officer and Secretary49
Pamela Pavco, Ph.D. Vice President of Pharmaceutical Development52
Dmitry Samarsky, Ph.D. Vice President of Technology and Business Development4148 

(1)Member of our Nominating and Governance Committee
(2)Member of our Audit Committee
(3)Member of our Compensation Committee
The following table sets forth information

Except as to persons who serve as scientific advisory board members:

Name
Professional Affiliation
Craig C. Mello, Ph.D (Chairman)
• Professor and Blaise University Chair in Molecular Medicine at the University of Massachusetts Medical School
• Investigator, Howard Hughes Medical Institute
• Member of the National Academy of Sciences
Tariq Rana, Ph.D
• Professor of Biochemistry & Molecular Pharmacology and Founding Director of the Program in Chemical Biology at the University of Massachusetts Medical School
Gregory Hannon, Ph.D
• Investigator, Howard Hughes Medical Institute
Michael Czech, Ph.D
• Professor and Chair in Molecular Medicine at the University of Massachusetts Medical School
Nicholas Dean, Ph.D
• Founder and Chief Scientific Officer of Excaliard Pharmaceuticals
Nassim Usman, Ph.D• Chief Executive Officer and Board Member of Catalyst Biosciences
Victor Ambros, Ph.D.• Professor of Molecular Medicine at the University of Massachusetts Medical School
Directors and Executive Officers
Sanford J. Hillsberghas been the Chairman of our board of directors since 2007. Mr. Hillsberg has been an attorney with TroyGould PC since 1976 and is a member of the firm’s Management Committee. Mr. Hillsberg was a founder and until December 2007, served as a director and Secretary of ImmunoCellular Therapeutics, Ltd., a publicly-held biopharmaceutical company formed to develop cellular therapies, including


59


dendritic cell-based vaccines for the treatment of brain and other cancers, and its predecessor company since February 2004. Mr. Hillsberg has also served as a director of Tempra Technology, Inc., a thermal research and development company, since 1997. Mr. Hillsberg served as a director and Secretary of Duska Therapeutics, Inc., a publicly-held biopharmaceutical company, and its predecessor company from 1999 until January 2006. He previously served as a director and Vice President of Medco Research, Inc., a then publicly-held pharmaceutical company. Mr. Hillsberg is a member of the Board of Governors of Cedars-Sinai Medical Center and has also previously served as a Commissioner of the Quality and Productivity Commission of the City of Los Angeles. Mr. Hillsberg holds a B.A. degree from the University of Pennsylvania and a J.D. degree from Harvard Law School. TroyGould PC, including Mr. Hillsberg, has represented CytRx since 2003.
Tod Woolf, Ph.D. has been our President and Chief Executive Officer and a director since 2007. Dr. Woolf has 20 years of experience developing and commercializing innovative biomedical technologies. He previously worked at numerous biotechnology companies including Ribozyme Pharmaceuticals (now Sirna Therapeutics), where he co-developed a number of lead therapeutic RNA compounds and developed Genbloctm RNA technology, which was spun out to create Atugen (now called Silence Therapeutics). In 1996, he founded and served as Chief Executive Officer of Sequitur, an RNAi company acquired by Invitrogen Corporation in 2003. At Sequitur, Dr. Woolf co-invented and commercialized STEALTH RNAi, one of the most widely used second-generation RNAi research products. Also at Sequitur, he established collaborations with over a dozen major pharmaceutical companies. From 2003 through 2006, Dr. Woolf was an advisor to Invitrogen and more recently has served as an advisor to Signet Laboratories prior to its acquisition by Covance, and has advised ProNai and Praecis Pharmaceuticals. Furthermore, beginning in 2004, Dr. Woolf has served as the President and owner of IPIFINI, Inc., a consulting company focused on technology development and from 2006 to 2007, Dr. Woolf acted as a consultant to CytRx with a focus on strategic advising in relation to its RNAi assets. Dr. Woolf earned his Masters and Ph.D. in Cellular and Development Biology at Harvard University from 1987 through 1991, where he performed work in the then-nascent field of RNA therapeutics.
Mark J. Ahn, Ph.D. has been one of our directors since 2007. Dr. Ahn is Professor and Chair, Science & Technology Management with a joint appointment from the faculties of Commerce & Administration and Science, Victoria University of Wellington. He is also a Principal of Pukana Partners, Ltd., a strategic consulting firm. Prior to that he was founder, President and Chief Executive Officer and a member of the Board of Directors for Hana Biosciences from 2003 to 2007. Prior to joining Hana, he served as Vice President, Hematology and corporate officer at Genentech, Inc. where he was responsible for commercial and clinical development of the Hematology franchise from 2001 through 2003. Dr. Ahn was also employed by Amgen (1990 to 1997) and Bristol-Myers Squibb Company (1997 to 2001), holding a series of positions of increasing responsibility in strategy, general management, sales and marketing, business development, and finance. He also serves on the Board of Directors of Access Pharmaceuticals and Mesynthes. Dr. Ahn received a BA and MBA from Chaminade University, where he currently serves on the Board of Governors. He was a graduate fellow in Economics at Essex University, and has a Ph.D. from the University of South Australia. Dr. Ahn is a Henry Crown Fellow at the Aspen Institute.
Stephen Gallikerhas been one of our directors since 2007. Mr. Galliker served as the Executive Vice President, Finance and Administration, and Chief Financial Officer of Dyax Corp. from 1999 until his retirement in July 2008.. From 1996 to 1999, Mr. Galliker was the Chief Financial Officer of Excel Switching Corporation, a developer and manufacturer of open switching platforms for telecommunications networks, and was Excel’s Vice President, Finance and Administration from 1997 to 1999. From 1992 to 1996, Mr. Galliker was employed by Ultracision, Inc., a developer and manufacturer of ultrasonically powered surgical instruments, where he served as Chief Financial Officer and Vice President of Finance until 1995, when he became Ultracision’s Chief Operating Officer. Mr. Galliker is also a director of Osteotech, Inc., a medical device company. Mr. Galliker is a Certified Public Accountant and received a B.S. from Georgetown University and an M.B.A. from the University of Chicago.
Steven A. Kriegsmanhas been one of our directors since 2006. Mr. Kriegsman has been a director and the President and Chief Executive Officer of CytRx since July 2002. He previously served as Director and Chairman of Global Genomics from June 2000 until July 2002. Mr. Kriegsman is the Chairman of the Board and Founder of Kriegsman Capital Group LLC, a financial advisory firm specializing in the development of


60


alternative sources of equity capital for emerging growth companies in the healthcare industry. He has advised such companies as SuperGen Inc., Closure Medical Corporation, Novoste Corporation, Miravant Medical Technologies and Maxim Pharmaceuticals. Mr. Kriegsman has a B.S. degree with honors from New York University in Accounting and completed the Executive Program in Mergers and Acquisitions at New York University, The Management Institute. Mr. Kriegsman was formerly a Certified Public Accountant with KPMG in New York City. From June 2003 until February 2008, he served as a Director, and he is the former Chairman of the Audit Committee of Bradley Pharmaceuticals, Inc. From June 2008 to the present, Mr. Kriegsman has served on the Board of Directors of Hythiam, Inc. and serves as chairman of Hythiam’s audit committee. In February 2006, Mr. Kriegsman received the Corporate Philanthropist of the Year Award from the Greater Los Angeles Chapter of the ALS Association and in October 2006, he received the Lou Gehrig Memorial Corporate Award from the Muscular Dystrophy Association. Mr. Kriegsman has been active in various charitable organizations including the Biotechnology Industry Organization, the ALS Association, the Los Angeles Venture Association, the Southern California Biomedical Council, and the Palisades-Malibu YMCA.
Stephen J. DiPalma, MBAhas been our Chief Financial Officer since September 2007. Mr. DiPalma has over twenty years of broad experience with emerging life science companies. He was founder, President and CEO of Catalyst Oncology, Inc., a specialty diagnostic company, from 2004 until its recent merger with a public diagnostics company. From 2002 to 2004, Mr. DiPalma was the Chief Financial Officer for Milkhaus Laboratories, a drug development company, and from 1998 to 2002, he was Chief Financial Officer for Phytera, Inc., an international biotech company involved in natural products-based drug discovery. Prior to Phytera, Mr. DiPalma was the Chief Financial Officer at Aquila Biopharmaceuticals, a public biotechnology company. From 1988 to 1995, he was the co-founder and Chief Financial Officer at Athena Diagnostics, a specialty diagnostic testing firm in the neurology field that subsequently merged with a public biotech company. Mr. DiPalma began working in the healthcare industry in 1985 in financial positions for a subsidiary of Baxter International. Mr. DiPalma earned an MBA from Babson College and holds a BS in finance and information systems from the University of Massachusetts. He has also serves on the Board of Directors of Neuroptix Corporation.
Dmitry Samarsky, Ph.D. has been our Vice President of Technology and Business Development since June 2007. From 2005 through 2007, Dr. Samarsky was with Dharmacon, Inc. (now part of ThermoFisher Scientific), where his role was to develop, support and expedite technology development for the company’s RNAi platform. From 2003 through 2005, Dr. Samarsky was employed by Invitrogen, formulating partnership models and providing BioDiscovery platform solutions for the drug discovery process. From 2001 through 2003, Dr. Samarsky was employed by Sequitur, Inc. where he had the role of developing and promoting Sequitur, Inc.’s antisense and RNAi technological platforms. Dr. Samarsky received his Ph.D. in biochemistry and molecular biology from the University of Massachusetts, Amherst in 1998. He then performed postdoctoral work with Dr. Michael R. Green, a Howard Hughes Medical Institute investigator at the University of Massachusetts Medical School, Worcester. During postdoctoral training, Dr. Samarsky was awarded a three year H. Arthur Smith Fellowship for Cancer Research. Dr. Samarsky has authored many publications, including research articles, reviews, book chapters and patent applications and has frequently advised, chaired and presented at various industrial and academic conferences and symposia.
Pamela Pavco, Ph.D. has been our Vice President of Pharmaceutical Development since March 2007. Dr. Pavco brings over 16 years of research and development experience in oligonucleotides to us. From 2002 to 2006, Dr. Pavco was Senior Director, R&D Project Management at Sirna Therapeutics, previously known as Ribozyme Pharmaceuticals, where she was responsible for the discovery research and development ofSirna-027, the first chemically modified siRNA to enter into clinical trials. Dr. Pavco also managed the alliance with Allergan that was initiated to continue discovery research in the area of ophthalmology and take Sirna-027 forward into Phase 2 clinical studies. While at Sirna, Dr. Pavco served various additional roles including Director of Biology Research and Director of Pharmacology and managed numerous corporate collaborations and internal programs developing therapeutic oligonucleotides in the fields of oncology, anti-angiogenesis, Hepatitis, respiratory disease and Huntington’s disease. Dr. Pavco has authored numerous scientific articles and contributed to approximately 48 patents and patent applications in the oligonucleotide therapeutics field. Dr. Pavco received a


61


Ph.D. in Biochemistry from Virginia Commonwealth University in 1983 and did her post-doctoral work at Duke University prior to joining Sirna Therapeutics. She is a member of the American Association of Cancer Research and the Association for Research and Vision in Ophthalmology.
Scientific Advisory Board Members
Craig C. Mello, Ph.D., has served as the Chairman of our Scientific Advisory Board since February 2007. Dr. Mello, co-recipient of the 2006 Nobel Prize in Medicine for RNAi, co-discovered RNAi and co-invented RNAi therapeutics. Dr. Mello is the Blais University Chair in Molecular Medicine at the University of Massachusetts Medical School, a Howard Hughes Investigator and a member of the National Academy of Sciences. In 2006, he was named the inaugural recipient of The Dr. Paul Janssen Award for Biomedical Research by Johnson & Johnson and was the co-recipient of the Paul Ehrlich and Ludwig Darmstaedter Prize. Dr. Mello was also the co-recipient of the National Academy of Sciences’ Award in Molecular Biology and the Wiley Prize in the Biomedical Sciences from Rockefeller University in 2003. He was a postdoctoral fellow at the Fred Hutchinson Cancer Research Center and in 1995, was named a Pew Scholar in the Biomedical Sciences. Dr. Mello received his B.S. in Biochemistry from Brown University in 1982 and his Ph.D. in Cellular and Developmental Biology from Harvard University in 1990.
Tariq Rana, Ph.D., has served as a member of our Scientific Advisory Board since February 2007. Dr. Rana is Professor of Biochemistry & Molecular Pharmacology and Founding Director of the Program in Chemical Biology at the University of Massachusetts Medical School. Dr. Rana’s laboratory discovered the fundamental rules to stabilize RNAi, and developed new technologies for therapeutic RNAi. Dr. Rana has previously advised a number of biotechnology companies including Sirna Therapeutics and has served as a member of Sirna’s Scientific Advisory Board. He received a National Institutes of Health Research Career Award in 1996. He was an American Cancer Society Fellow from 1991 to 1993 at the University of California, Berkeley. Dr. Rana received his Ph.D. in 1990 from the University of California at Davis.
Gregory Hannon, Ph.D., has served as a member of our Scientific Advisory Board since February 2007. Dr. Hannon is currently a Howard Hughes Investigator at Cold Spring Harbor Laboratory. His laboratory discovered the mechanism of RNAi in human cells. Dr. Hannon and his collaborators identified the p21, p15 and p16 genes, which are in tumor suppressor pathways. Dr. Hannon’s research was recognized bySciencemagazine in 2002 as the Breakthrough of the Year. He was a 1997 Pew Scholar in Biomedical Sciences, received a U.S. Army Breast Cancer Research Program Innovator Award, in 2005 American Association for Cancer Research Award for Outstanding Achievement in Cancer Research in 2007 he received the National Academy of Sciences Award for Molecular Biology. Dr. Hannon also recently received the Memorial Sloan-Kettering Cancer Center’s 2007 Paul Marks Prize for Cancer Research. He assumed his current position in 2005 as a Howard Hughes Medical Institute Professor and continues to explore the mechanisms and regulation of RNA interference as well as its applications to cancer research. Dr. Hannon received a B.A. in Biochemistry and a Ph.D. in Molecular Biology at Case Western Reserve University in Ohio.
Michael Czech, Ph.D., has served as a member of our Scientific Advisory Board since February 2007. Dr. Czech is Professor and Chair, Program in Molecular Medicine, at the University of Massachusetts Medical School. Dr. Czech has authored over 250 papers in the field of insulin action, and was awarded the Eli Lilly Award for Diabetes Research, the 1998 Elliot P. Joslin Medal in diabetes research and the 2000 Banting Medal of the American Diabetes Association. He was a member of the Cell Biology and Regulation Review Panel of the Howard Hughes Medical Institute from1994-1998, and served as a member of the Endocrinology Study Section of the National Institutes of Health. Dr. Czech received a B.A. from Brown University in 1967, a M.A. from Duke University in 1969 and received his Ph.D. in Biochemistry from Brown University in 1972.
Nicholas Dean, Ph.D., has served as a member of our Scientific Advisory Board since March 2007. Dr. Dean is Founder and Chief Scientific Officer of Excaliard Pharmaceuticals. Formerly, Dr. Dean was the Vice President of Functional Genomics and Oncology at Isis Pharmaceuticals, and Managing Director of Isis Singapore. Dr. Dean is a leader in the field of oligonucleotide therapeutics, with an emphasis on pharmacology. He has held Vice President positions in departments of functional genomics, oncology and pharmacology during his 15 year career at Isis Pharmaceuticals. At Isis, Dr. Dean managed a substantial budget for their


62


Eli Lilly collaboration in oncology and metabolic disease and managed a research group of 25 scientists. He has authored 38 issued patents and is the author of over 120 papers in the fields of genomics, antisense and oligonucleotide technology, and oncology. Dr. Dean is in an inventor on more than 100 patents and patent applications and author of more than 100 research publications. Dr. Dean is also a member of the editorial board of Antisense & Nucleic Acid Research and Drug Discovery Today: Technologies. He received his B.Sc. from the University of Wales, and his Ph.D. in pharmacology from the Welsh National School of Medicine.
Nassim Usman, Ph.D., has served as a member of our Scientific Advisory Board since March 2007. Dr Usman is currently Chief Executive Officer and a member of the Board of Directors at Catalyst Biosciences. Prior to joining Catalyst in 2006 he was anEntrepreneur-in-Residence with Morgenthaler Ventures, a national venture capital firm with approximately $2.5 billion under management. He joined Morgenthaler after serving as Senior Vice President and Chief Operating Officer at Sirna Therapeutics Inc. from 2004 to 2005 and held various Research and Development positions at both Sirna and Ribozyme Pharmaceuticals, including Vice President of Research and Development and Chief Scientific Officer, from 1992 to 2004. Dr. Usman has entered several RNA-based drugs into clinical development, most recentlySirna-027, an siRNA for the treatment of Age-Related Macular Degeneration. Dr. Usman was an NIH Fogarty and NSERC Postdoctoral Fellow and Scientist in the Departments of Biology and Chemistry at the Massachusetts Institute of Technology from 1987 to 1992. In his doctoral dissertation, he developed a method for the solid-phase synthesis of RNA that is widely used in science and in a marketed RNA product. He has authored more than 70 scientific articles and 130 patents and applications. Dr. Usman received his B.Sc. (Honors) and Ph.D. in Organic Chemistry from McGill University.
Victor Ambros, Ph.D., joined our Scientific Advisory Board in June 2008. Dr. Ambros is currently Professor of Molecular Medicine at the University of Massachusetts Medical School. Dr. Ambros is known for his groundbreaking 1993 discovery of the first microRNA (miRNA), which has been heralded as a fundamental discovery in physiology and medicine. He was on the faculty of Harvard from 1984 to 1992, at Dartmouth from 1992 to 2007, and most recently, at the University of Massachusetts Medical School, where he was appointed Professor of Molecular Medicine in early 2008. In April, he was awarded the 2008 Gairdner International Award, one of the most prestigious international awards in medical research and dubbed the “Canadian Nobel.” Also in April 2008, Dr. Ambros was one of nine individuals to receive the Benjamin Franklin Medal in Life Sciences. Dr. Ambros has also received the Brandeis University’s Lewis S. Rosenstiel Award and the Genetics Society of America Medal for outstanding contributions in genetic research for the past 15 years. In 2002, he was awarded the Newcomb Cleveland Prize from the American Association for the Advancement of Science, of which he is a member. He is the author of numerous publications in the field of RNA and microRNA and is frequent lecturer on microRNA and gene regulatory pathways. Dr. Ambros earned his B.Sc. and Ph.D. from MIT.
Director Independence
Our board of directors has reviewed the materiality of any relationship that each of our directors has with us, either directly or indirectly. Based on this review, the board has determined that Messrs. Hillsberg and Galliker and Dr. Ahn are “independent directors” as defined by NASDAQ.
Committees of the Board of Directors
We are governed by our board of directors. Our board of directors has established an Audit Committee and a Compensation Committee and a standing Nominating and Governance Committee
Audit Committee
The purposes of the Audit Committee are to (a) appoint, oversee and replace, if necessary, the independent auditor, (b) to assist the board of directors’ oversight of the preparation of our financial statements, our compliance with legal and regulatory requirements, the independent auditor’s qualifications and independence and the performance of our internal audit function and independent auditor, and (c) to prepare the report the SEC rules require to be included in our annual proxy statement. The Audit Committee


63


is also responsible for the resolution of disagreements between management and the auditor regarding financial reporting. The members of the Audit Committee are Mr. Galliker (chair), Mr. Hillsberg and Dr. Ahn. We believe that each member satisfies the requirements, including independence, as established by the Rules of the NASDAQ Capital Market. The board of directors has determined that Mr. Galliker is an audit committee financial expert and that he satisfies the independence requirements of the Exchange Act.
The Audit Committee charter is posted on the corporate governance section of our website at http://www.rxipharma.com. No material on our website is part of this annual report statement.
Compensation Committee
The purposes of the Compensation Committee are to establish, implement and monitor our executive compensation program philosophy and practices. The Compensation Committee seeks to ensure that the total compensation paid to our named executive officers is fair, reasonable and competitive. The responsibilities of the Compensation Committee include reviewing and approving corporate goals and objectives relevant to executive officer compensation, evaluating executive officers with respect to those goals, recommending to the board of directors the adoption of new incentive compensation plans and equity-based plans and administering the current plans, reviewing our policies concerning perquisites, including severance, recommending compensation of members of the board of directors and board committees and reviewing and discussing the compensation discussion and analysis to be included in our SEC filings.
The members of the Compensation Committee are Mr. Kriegsman (chair), Dr. Ahn and Mr. Galliker. We believe that each of Dr. Ahn and Mr. Galliker satisfies the requirements, including independence, as established by the Rules of the NASDAQ Capital Market. We are relying upon the phase-in compliance period provided in Rule 4350(a)(5) of the NASDAQ Capital Market for Mr. Kriegsman’s membership on the Compensation Committee.
The Compensation Committee charter is posted on the corporate governance section of our website athttp://www.rxipharma.com. No material on our website is part of this annual report statement.
Nominating and Governance Committee
The purposes of the Nominating and Governance Committee are to (a) identify individuals qualified to become members of the board of directors, (b) select, or recommend that the board of directors select, the director nominees for the next annual meeting of stockholders, (c) develop and recommend to the board of directors a set of applicable corporate governance principles, and (d) oversee the evaluation of the board of directors and its dealings with management and appropriate committees of the board of directors. The responsibilities of the Nominating and Governance Committee include establishing a policy under which stockholders may recommend a candidate for consideration for nomination as a director, articulating expectations to each director, reviewing practices and policies with respect to directors, reviewing functions, duties and composition of the committees of the board of directors, reviewing polices with respect to significant issues of corporate public responsibility, recommending processes for annual evaluations of the performance of the board of directors and Chief Executive Officer, reporting questions of possible conflicts of interest of board members and overseeing the maintenance and presentation to the board of directors of management’s plans for succession to senior management positions. The members of the Nominating and Governance Committee are Dr. Ahn (chair), Mr. Galliker and Mr. Hillsberg. We believe that each member satisfies the requirements, including independence, as established by the Rules of the NASDAQ Capital Market.
The Nominating and Governance Committee charter is posted on the corporate governance section of our website athttp://www.rxipharma.com. No material on our website is part of this annual report statement.


64


EXECUTIVE COMPENSATION
Compensation Discussion and Analysis
Overview of Executive Compensation Program
The Compensation Committee of our board of directors has responsibility for establishing, implementing and monitoring our executive compensation program philosophy and practices. The Compensation Committee seeks to ensure that the total compensation paid to our named executive officers is fair, reasonable and competitive. Generally, the types of compensation and benefits provided to named executive officers will be similar to those provided to any other officers. The individuals who serve as our Chief Executive Officer and Chief Financial Officer during 2007, as well as the other officers included in the table of directors and executive officers are referred to as the “named executive officers.”
Compensation Philosophy and Objectives
The Compensation Committee believes that an effective executive compensation program should provide base annual compensation that is reasonable in relation to individual executive’s job responsibilities and reward the achievement of both annual and long-term strategic goals of our company. The Committee uses annual and other periodic cash bonuses to reward an officer’s achievement of specific goals and stock options as a retention tool and as a means to align the executive’s long-term interests with those of our stockholders, with the ultimate objective of improving stockholder value. The Committee evaluates both performance and compensation to maintain our company’s ability to attract and retain excellent employees in key positions and to assure that compensation provided to key employees remains competitive relative to the compensation paid to similarly situated executives of comparable companies. To that end, the Compensation Committee believes executive compensation packages provided by us to our named executive officers should include both cash and share based compensation.
Because of the size of our company, the small number of executive officers in our company, and our company’s financial priorities, the Compensation Committee has decided not to implement or offer any pension benefits, deferred compensation plans, or other similar plans for our executive officers. Accordingly, the components of the executive compensation consist of salary, year-end cash bonuses awarded based on the Compensation Committee’s subjective assessment of each individual executive’s job performance during the past year, stock option grants to provide executives with longer-term incentives, and may include occasional special compensation awards (either cash or stock options) to reward extraordinary efforts or results.
As a biopharmaceutical company engaged in developing potential products that, to date, have not generated significant revenues and are not expected to generate significant revenues or profits for at least several years, the Compensation Committee also takes our company’s financial and working capital condition into account in its compensation decisions.
Role of Executive Officers in Compensation Decisions
The Compensation Committee oversees compensation decisions for the named executive officers and recommends compensation increases, bonuses and equity awards for our officers to our board of directors, which has final approval authority. Decisions regarding the non-equity compensation of any other officers would be proposed by the Chief Executive Officer and approved by the Compensation Committee.
The Compensation Committee and the Chief Executive Officer intend to annually review the performance of each named executive officer (other than the Chief Executive Officer, whose performance is reviewed only by the Compensation Committee). The conclusions reached and recommendations based on these reviews, including with respect to salary adjustments and annual award amounts, will be presented to our board of directors, who can exercise its discretion in modifying any recommended adjustments or awards to executives.


65


Setting Executive Compensation
Based on the foregoing objectives, the Compensation Committee has structured our company’s annual cash and incentive-based cash and non-cash executive compensation to motivate executives to achieve the business goals set by our company, to reward the executives for achieving such goals, and to retain the executives. In doing so, the Compensation Committee has not employed outside compensation consultants. There is no pre-established policy or target for the allocation between either cash or non-cash incentive compensation or between the executive compensation components as described below.
2007 Executive Compensation Components
For 2007, the principal components of compensation for the executive officers are:
• base salary,
• performance-based cash compensation, and
• long-term equity incentive compensation.
Our compensation philosophies with respect to each of these components, including the basis for the compensation awarded to our named executive officers, are discussed below. In addition, although each element of compensation described below is considered separately by the Compensation Committee, the Compensation Committee’s determination of each individual component takes into account the aggregate compensation package for each named executive officer.
Base Salary
The Company provides named executive officers and other employees with base salary to compensate them for services rendered during the fiscal year. Base salary ranges for the named executive officers are determined for each executive based on his or her position and responsibility. The base salaries of our named executive officers are reviewed annually by the Compensation Committee as part of the company’s performance review process, as well as upon a change in job responsibility. Merit-based increases to salaries of our named executive officers will be based on the Compensation Committee’s assessment of the individual’s performance, and will be approved by our board of directors.
During its review of base salaries for executives, the Compensation Committee will primarily consider:
• the negotiated terms of each executive employment agreement,
• internal review of the executive’s compensation, both individually and relative to other executive officers, and
• individual performance of the executive.
All of our current named executive officers were hired by us in 2007. The chart below sets forth the initial base salaries that were established for each of our named executive officers and the start date (and end date, if applicable) of employment for such officers.
       
Named Executive Officer
 Base Salary for 2007  
Term of Employment
 
Dr. Tod Woolf $250,000  February 22, 2007 — present
Mr. Stephen DiPalma $220,000  August 28, 2007 — present
Dr. Pamela Pavco $198,000  March 7, 2007 — present
Dr. Dmitry Samarsky $170,000  June 25, 2007 — present
Mr. James Warren $200,000  May 23, 2007 — August 31, 2007
On February 22, 2007, we hired Dr. Tod Woolf as our President and Chief Executive Officer and established his base salary of $250,000 on an annualized basis. Dr. Woolf’s base salary was approved by the Board, which at that time consisted solely of Mr. Kriegsman, and was negotiated based on Dr. Woolf’s prior


66


experience, his prior levels of compensation, competitive market factors and the amount of salary that our board of directors believed would be required to induce Dr. Woolf to join us.
Upon the Compensation Committee’s recommendation, our board of directors approved the base salaries of Dr. Pavco, Dr. Samarsky, Mr. DiPalma and Mr. Warren as indicated in the chart above upon each officer’s respective employment with us. For each of these officers, the base salaries were negotiated based on each officer’s respective prior experience, prior levels of compensation, competitive market factors, the compensation packages of our other officers and the amount of salary that the Compensation Committee believed would be required to induce the officer to join us. No adjustments to these base salaries were made in 2007.
Performance-Based Compensation
The Compensation Committee has established an incentive compensation program with defined performance targets related to the achievement of corporate goals and objectives. Because our company currently does not generate revenues and has not commercially released any products, the Compensation Committee bases its performance and achievement compensation awards on the achievement of product development targets and milestones, effective fund-raising efforts, and effective management of personnel and capital resources, among other criteria. Currently, Mr. DiPalma and Dr. Samarsky are the only named executive officers for whom performance compensation awards are integrated into the terms of their employment agreements. As described in “Executive Compensation — Employment Agreements”, Mr. DiPalma’s top performance compensation award would be 30% of Mr. DiPalma’s annual base salary and Dr. Samarsky’s top performance compensation award would be 16.5% of Dr. Samarsky’s annual base salary. The incentive compensation program established by the Compensation Committee provides for performance compensation awards ranging from 10% to 35% of annual base salary, and all full-time permanent employees are eligible to potentially receive performance compensation awards, depending on the Company’s performance and the performance of the individual.
Long-Term Equity Incentive Compensation
Our long-term incentive compensation consists of the grant of stock options to all full-time permanent employees of the Company. The stock option program assists the Company to:
• establish the link between the creation of stockholder value and long-term executive incentive compensation,
• provide an opportunity for increased equity ownership by executives,
• function as a retention tool because of the vesting features included in all options granted by the Compensation Committee, and
• maintain competitive levels of total compensation.
We normally grant stock options to new employees when they join our Company based upon their position with us and their relevant prior experience. The options granted by our board of directors generally vest periodically over a period of three or four years of the ten-year option term. Upon termination of employment, employees have a90-day period within which vested options may be exercised, except during any severance period and except in the case of death (subject to a one-year limitation). Prior to the exercise of an option, the holder has no rights as a stockholder with respect to the shares subject to such option, including voting rights and the right to receive dividends or dividend equivalents. In addition to the initial option grants, our board of directors may grant additional options to retain, reward, or provide incentive for, our employees. In any determination of additional stock option grants, the Compensation Committee also considers individual and general corporate performance, which may include the attainment of product development milestones and attaining other annual corporate goals and objectives, comparative share ownership levels, the amount of equity awards, if any, previously granted to the executive, the vesting of such awards and total compensation awarded to each employee.


67


We expect that we will continue to provide new employees with initial option grants in the future to provide long-term compensation incentives and will continue to rely on performance-based and retention grants to provide additional incentives for current employees. Additionally, in the future, the Compensation Committee and our board may consider awarding additional or alternative forms of equity incentives, such as grants of restricted stock, restricted stock units and other performance-based awards. As discussed below, prior to the commencement of public trading of our common stock, we have awarded common stock options at an exercise price equal to the RXi common stock fair market value of $5.00, based on the determination by the RXi Board of Directors that the valuation of the Company has not changed since the valuation of April 30, 2007, as discussed above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates — Valuation of Common Stock.” It is our policy to award common stock options at an exercise price equal to the closing price of our common stock on the date of the grant. In certain limited circumstances, the Compensation Committee may recommend the grant of common stock options to an executive at an exercise price in excess of the closing price of the common stock on the grant date. For purposes of determining the exercise price of common stock options, the grant date is deemed to be the date on which the board of directors approves the common stock option grant.
We have no program, practice or plan to grant common stock options to our executive officers, including new executive officers, in coordination with the release of material nonpublic information. We also have not timed the release of material nonpublic information for the purpose of affecting the value of common stock options or other compensation to our executive officers, and we have no plan to do so.
In light of recent changes to the SEC’s rules regarding executive compensation disclosure, we intend to consider whether it may be advisable to adopt formal policies and procedures regarding the granting of stock options.
We have granted Dr. Woolf, Mr. DiPalma, Mr. Warren, Dr. Pavco and Dr. Samarsky each common stock options pursuant to their employment agreements under our 2007 Incentive Plan (described in more detail below). These common stock options were approved by our board and vest monthlyand/or quarterly over three or four years, provided that each respective employee remains in our employ through such vesting periods. We granted Dr. Woolf 316,994 common stock options on May 23, 2007. We granted 158,509 common stock options to Mr. Warren on May 23, 2007. We granted 145,311 common stock options to Dr. Pavco on May 23, 2007. We granted, 105,561 common stock options to Dr. Samarsky on June 11, 2007. We granted 100,000 common stock options to Mr. DiPalma on October 18, 2007.. Only Dr. Woolf and Mr. Warren’s common stock options were intended to vest on a monthly basis, this vesting schedule was a product of negotiations between us and these officers at the time of their employment. The amounts of common stock options to be granted to the named executive officers were determined by the considerations mentioned in this section and individual negotiations with the named executive officers.
Ownership Guidelines
We have no requirement that each named executive officer maintain a minimum ownership interest in our company.
Retirement Plans, Perquisites and Other Personal Benefits
We have adopted a tax-qualified employee savings and retirement plan, the 401(k) Plan, for eligible United States employees. Eligible employees may elect to defer a percentage of their eligible compensation in the 401(k) Plan, subject to the statutorily prescribed annual limit. We may make matching contributions on behalf of all participants in the 401(k) Plan in an amount determined by our board of directors. We may also make additional discretionary profit sharing contributions in amounts as determined by the board of directors, subject to statutory limitations. Matching and profit-sharing contributions, if any, are subject to a vesting schedule; all other contributions are at all times fully vested. We intend the 401(k) Plan, and the accompanying trust, to qualify under Sections 401(k) and 501 of the Internal Revenue Code so that contributions by employees to the 401(k) Plan, and income earned (if any) on plan contributions, are not taxable to employees until withdrawn from the 401(k) Plan, and so that we will be able to deduct our contributions, if any, when


68


made. The trustee under the 401(k) Plan, at the direction of each participant, invests the assets of the 401(k) Plan in any of a number of investment options.
We do not provide any of our executive officers with any perquisites or other personal benefits, other than benefits that we offer Dr. Woolf provided for in his employment agreement. See “Executive Compensation — Employment Agreements” below.
Termination-Based Compensation
We have agreements in place with our named executive officers that provide for acceleration of option vesting and severance payments upon termination of such officer’s employment or a change of control of our company. In the event of a change of control, as defined, certain provisions allow for acceleration of vesting in full of the options granted in such employment agreement. Pursuant to the change of control provisions in Dr. Pavco and Dr. Samarsky’s employment agreements and as more fully described below in “Executive Compensation — Potential Payments upon Termination or Change of Control,” if such officer is terminated due to a change of control, each is entitled to immediate vesting of the greater of (a) 50% of all unvested options or (b) 12 months of unvested options, as well as any accrued but unpaid salary and unused vacation time as of the date of termination, twelve months’ of salary from the date of termination and continued participation at our cost in our employer sponsored group benefit plans in which the officer was participating as of the date of termination.
Summary Compensation Table
The following table shows the compensation paid or accrued during the fiscal years ended December 31, 2007 and 2006 to (1) our Chief Executive Officer, (2) our Chief Financial Officer, (3) our former Chief Financial Officer, and (4) our two most highly compensated executive officers, other than our President and Chief Executive Officer and our Chief Financial Officer. Amounts included under Options awards below represent the fair value of the award calculated under SFAS 123(R).
                         
      (1)
 Option
 All Other
  
Name and Principle Position
 Year Salary Bonus Awards Compensation Total
 
Tod Woolf, Ph.D.   2006  $          $115,830(2) $115,830 
President and Chief Executive Officer  2007  $216,347  $87,500  $236,433  $33,302(3) $573,582 
Stephen J. DiPalma  2007  $76,396  $30,000  $47,893  $201(4) $154,490 
Chief Financial Officer and Secretary                        
James Warren  2006              $45,900(6) $45,900 
Former Chief Financial Officer and Secretary  2007  $68,718  $  $253,045(5) $113,721(7) $435,484 
Pamela Pavco, Ph.D.   2007  $162,762  $38,522  $104,390  $29,677(8) $335,351 
Vice President of Pharmaceutical Development                        
Dmitry Samarsky, Ph.D.   2007  $86,961  $20,907  $50,556  $302(9) $158,726 
Vice President of Technology and Business Development                        
(1)Year-end bonuses were accrued at December 31, 2007 and paid in January 2008.
(2)Consists of $115,830 in consulting fees paid by CytRx Corporation.
(3)Consists of $33,000 in consulting fees paid by CytRx Corporation and $302 in life insurance premiums paid by us.
(4)Consists of $201 in life insurance premiums paid by us.
(5)Mr. Warren exercised these options on November 30, 2007.
(6)Consists of $45,900 in consulting fees paid by CytRx Corporation.


69


(7)Consists of $61,170 in consulting fees paid by CytRx Corporation, $50,000 in salary continuation paid by us following Mr. Warren’s termination on August 31, 2007, $2,400 in benefit continuation paid by us following Mr. Warren’s termination ($151 of this amount consisted of life insurance premiums) and $151 in life insurance premiums paid by us during Mr. Warren’s employment with us.
(8)Consists of $29,375 in consulting fees paid by CytRx Corporation and $302 in life insurance premiums paid by us.
(9)Consists of $302 in life insurance premiums paid by us.
RXi Pharmaceuticals Corporation’s 2007 Incentive Plan
The RXi Pharmaceutical Corporation 2007 Incentive Plan, (the “2007 Incentive Plan”), was adopted by our board of directors on February 23, 2007, approved by our stockholders on June 19, 2007. Under this plan, we may grant incentive common stock options, nonqualified stock options and restricted and unrestricted stock awards. A maximum of 2,750,000 shares of common stock are authorized for issuance under our 2007 Incentive Plan. As of December 31, 2007, 1,335,184 shares were subject to outstanding options under this plan, and 1,348,771 shares were available for future grant under this plan. The board of directors has appointed its Compensation Committee to act as the administrator of our 2007 Incentive Plan.
Subject to board approval, the administrator has the power to select the participants, establish the price, terms and conditions of each option, issue shares upon option exercises and interpret option agreements, and the administrator may at any time modify or amend the 2007 Incentive Plan in any respect, except where stockholders’ approval is required by law or where such termination or modification or amendment affects the rights of an optionee under a previously granted option and such optionee’s consent has not been obtained.
In the event of a change of control in which there is an acquiring or surviving entity, the administrator may provide for the assumption or substitution of some or all outstanding awards by the acquirer or survivor. In the absence of an assumption or substitution, each stock option will become fully exercisable prior to the transaction on a basis that gives the holder of the stock option a reasonable opportunity as determined by the administrator, to participate as a stockholder in the transaction following exercise, and the stock option will terminate upon consummation of the transaction. In the case of restricted stock, the administrator may require that any amounts delivered, exchanged or otherwise paid in respect of such stock in connection with the transaction be placed in escrow or otherwise made subject to such restrictions as the board of directors deems appropriate.
Immediately upon termination of employment of an employee, the unvested portion of any stock option will terminate and the balance, to the extent exercisable, will remain exercisable for the lesser of (i) a period of three months (90 days) or (ii) the period ending on the latest date on which such stock option could have been exercised without regard to this provision. The 2007 Incentive Plan provides exceptions for the vesting of options upon an individual’s death or if the administrator determines that the termination of employment resulted for reasons that cast discredit on the individual.


70


Grants of Plan-Based Awards
The following table shows information regarding grants of equity awards as of December 31, 2007 held by the executive officers named in the Summary Compensation Table.
               
    All Other
    
    Option
    
    Awards:
   Grant Date
    Number of
 Exercise or
 Fair Value
    Securities
 Base Price of
 of Stock
  Grant
 Underlying
 Option Awards
 and Option
Name
 Date Options (#) ($/Share) Awards
 
Tod Woolf, Ph.D. 5/23/2007  316,994  $5.00  $1,135,314 
President and Chief Executive Officer              
Stephen J. DiPalma 10/18/2007  100,000  $5.00  $383,140 
Chief Financial Officer and Secretary              
James Warren 5/23/2007  158,509(1) $5.00  $567,700 
Former Chief Financial Officer and Secretary              
Pamela Pavco, Ph.D.  5/23/2007  145,311  $5.00  $530,312 
Vice President of Pharmaceutical Development              
Dmitry Samarsky, Ph.D.  7/11/2007  105,561  $5.00  $381,592 
Vice President of Technology and Business Development              
(1)Represents the full number of shares granted to Mr. Warren in 2007. His employment terminated on August 31, 2007 and, pursuant to the terms of his employment agreement, he was entitled to the number of vested shares that he would have been entitled to for the full term of his employment agreement, or 66,045 shares. Mr. Warren exercised his options for 66,045 shares on November 30, 2007, for a total purchase price of $330,225.
Outstanding Equity Awards
The following table shows vested and unvested stock award grants outstanding on December 31, 2007 to each of the executive officers named in the Summary compensation table:
               
  Option Awards
  Number of
 Number of
    
  Securities
 Securities
    
  Underlying
 Underlying
    
  Unexercised
 Unexercised
 Option
 Option
  Options (#)
 Options (#)
 Exercise
 Expiration
Name
 Exercisable Unexercisable Price ($) Date
 
Tod Woolf, Ph.D.(1)  61,709   255,285  $5.00  5/23/2017
President and Chief Executive Officer              
Stephen J. DiPalma(2)  12,500   87,500  $5.00  10/18/2017
Chief Financial Officer and Secretary              
Pamela Pavco, Ph.D.(3)  27,246   118,065  $5.00  5/23/2017
Vice President of Pharmaceutical Development              
Dmitry Samarsky, Ph.D.(4)  13,195   92,366  $5.00  7/11/2017
Vice President of Technology and Business Development              
(1)The stock option grant to Dr. Woolf vests in 36 equal monthly installments of 8,804 shares beginning on June 23, 2007.
(2)The stock option grant to Mr. DiPalma vests in 16 equal quarterly installments of 6,250 shares beginning on November 28, 2007.


71


(3)The stock option grant to Dr. Pavco vests in 15 equal quarterly installments of 9,081.94 shares beginning on June 7, 2007, with a final installment of 9,081.90 shares vesting on March 7, 2011.
(4)The stock option grant to Dr. Samarsky vests in 16 equal quarterly installments of 6.25% of the shares underlying his stock option grant beginning on September 25, 2007; all installments will vest in an amount rounded down to nearest whole share except for the last installment which will be rounded up to equal the aggregate number of the then remaining unvested shares under the stock option grant.
Option Exercises and Stock Vested
The following table presents certain information concerning the exercise of options by one of the named executive officers during the fiscal year ended December 31, 2007.
         
  Option Awards 
  Number of Shares
    
  Acquired on
  Value Realized
 
Name
 Exercise (#)  on Exercise ($) 
 
James Warren  66,045  $330,255 
Former Chief Financial Officer and Secretary        
Pension Benefits
We do not have any qualified or non-qualified defined benefit plans.
Nonqualified Defined Compensation
We do not have any nonqualified defined compensation plans.
Potential Payments Upon Termination or Change of Control
The following table sets forth (a) quantitative estimates of the benefits that would accrue to each of our named executive officers if his or her employment is terminated without cause or if such employee terminates his or her employment for good reason (as more fully discussed for each individual officer below) on December 31, 2007 and (b) the value of accelerated vesting of stock options in the event of a change of control (whether or not employment is terminated upon such change in control). Amounts below reflect potential payments pursuant to the employment agreements for such named executive officers.
                     
              Value of
 
        Value of
     Accelerated
 
        Accelerated
     Option
 
  Salary
  Benefit
  Option
     Vesting Upon
 
  Continuation
  Continuation
  Vesting
  Total
  a Change in
 
Name and Principle Position
 (Termination)  (Termination)  (Termination)  (Termination)  Control 
 
Tod Woolf, Ph.D.  $250,000  $14,500  $449,000  $713,500  $978,098 
President and Chief Executive Officer                    
Stephen J. DiPalma $110,000  $7,300  $  $117,300  $335,248 
Chief Financial Officer and Secretary                    
Pamela Pavco, Ph.D.(1) $198,000  $2,100  $157,200  $357,300  $226,178 
Vice President of Pharmaceutical
Development
                    
Dmitry Samarsky, Ph.D(1) $85,000  $1,800  $57,200  $144,000  $176,945 
Vice President of Technology and Business Development                    
James Warren(2) $50,000  $2,400  $141,458  $193,858   NA 
Former Chief Financial Officer and Secretary                    
(1)Each of Drs. Pavco and Samarsky are entitled to specified benefits in the event his or her employment is terminated without cause or he or she terminates his or her employment for good reason following a change in control, as further described below.
(2)Mr. Warren’s employment with us was terminated as of August 31, 2007 and the amounts and values in the table above are the actual amounts and values received by Mr. Warren upon termination.


72


Termination Agreements
Tod Woolf, Ph.D.
Upon termination of Dr. Woolf’s employment by us without cause (as defined) or by Dr. Woolf with good reason (as defined), he is entitled to payment of: (a) any accrued but unpaid salary and unused vacation as of the date of his termination and any unpaid bonus that may have been previously awarded to him prior to such date, both of which are due and payable upon the effective date of his termination, (b) an amount, due and payable within 10 days following his termination, equal to his annual base salary for the period of time which is equal to or the earlier of either (i) the12-month anniversary of his termination date or (ii) the remainder of the term of the agreement but in no event less than six months and (c) continued participation, at our expense, during the six-month period in any of our sponsored group benefit plans in which Dr. Woolf was participating as of the date of termination. In addition, any options issued to Dr. Woolf under the 2007 Incentive Plan that would have vested through the earlier of (i) the12-month anniversary of his termination date or (ii) the remainder of the term of the agreement but in no less than six months following the date of termination, will vest and become exercisable as of the date of his termination without cause.
Furthermore, in the event that either (a) a covered transaction, as defined in our 2007 Incentive Plan, occurs or (b) CytRx votes its shares of our common stock to elect individuals who are (i) employees, officers or directors of CytRx, (ii) employees, officers or directors of any entity that has a contractual business relationship with CytRx, or (iii) employees, officers, directors of any entity that has a contractual business relationship with any officer or director of CytRx to constitute a majority of our board of directors, any options issued to Dr. Woolf will vest in full and become exercisable. The fair value of stock options that would vest as a result of any of these events occurring is approximately $978,098. The fair value of the options, based on the following assumptions, was estimated using the Black-Scholes option-pricing model. Due to the fact that we have no history of stock trading, our company’s expected stock-price volatility assumption is based on a combination of implied volatilities of similar entities whose share or option prices are publicly traded. We used a weighted-average expected stock-price volatility of 108.7%. The expected life assumption is based on a simplified method provided for under SAB No. 107 (“SAB 107”) regarding the Staff’s interpretation of SFAS 123(R), which averages the contractual term of our options (10 years) with the ordinary vesting term (three years). The dividend yield of zero is based on the fact that we have no present intention to pay cash dividends. The risk-free rate of 4.55% used for each grant is equal to the zero coupon rate in effect at the time of the grant for instruments with similar expected life. Dr. Woolf’s severance payments will only be triggered in the event that his employment is terminated by us without cause or by Dr. Woolf with good reason, which, for purposes of his employment agreement, means any of the following: (i) a material reduction in Dr. Woolf’s duties, position, or responsibilities in effect immediately prior to such reduction, (ii) the reduction of Dr. Woolf’s base salary or bonus opportunity by more than 5% relative to his salary and bonus opportunity in effect immediately prior to such reduction, (iii) a material reduction by us in the kind or level of benefits to which Dr. Woolf is entitled immediately prior to such reduction with the result that Dr. Woolf’s overall benefits package is significantly reduced, (iv) without Dr. Woolf’s express written consent, he is relocated to a facility or location more than 35 miles from our current facility in Worcester, Massachusetts, or (v) CytRx votes its shares of our common stock to elect individuals who are affiliates of CytRx to constitute a majority of our board of directors.
Stephen DiPalma
Upon termination of Mr. DiPalma’s employment by us without cause (as defined) or by Mr. DiPalma with good reason (as defined), he is entitled to payment of: (a) any accrued but unpaid salary and unused vacation as of the date of his termination, (b) six months’ salary from the date of termination (this period shall be referred to as the “Severance Period”) in the form of salary continuation; and (c) continued participation, at our expense, during the Severance Period in any of our sponsored group benefit plans in which Mr. DiPalma was participating as of the date of termination.
In the event that Mr. DiPalma were to be terminated by us without cause, the value of his severance package at December 31, 2007, including salary and benefits is approximately $117,300. Mr. DiPalma’s


73


severance payments will only be triggered in the event that his employment is terminated by us without cause or by Mr. DiPalma with good reason, which, for purposes of his employment agreement, means any of the following: (i) a material reduction in Mr. DiPalma’s compensation or benefits,and/or (ii) any change in Mr. DiPalma’s position or title that is not agreeable to Mr. DiPalma. In addition to the payments upon termination of Mr. DiPalma, all options issued to Mr. DiPalma under his employment agreement will vest in full and become exercisable as to all of the shares covered thereby upon the occurrence of a covered transaction as defined in our 2007 Incentive Plan. The fair value of stock options that would vest as a result of a covered transaction is approximately $335,000. The fair value of the options, based on the following assumptions, was estimated using the Black-Scholes option-pricing model.
Due to the fact that we have no history of stock trading, our company’s expected stock-price volatility assumption is based on a combination of implied volatilities of similar entities whose share or option prices are publicly traded. We used a weighted-average expected stock-price volatility of 109.4%. The expected life assumption is based on a simplified method provided for under SAB 107, which averages the contractual term of our options (10 years) with the ordinary vesting term (three years). The dividend yield of zero is based on the fact that we have no present intention to pay cash dividends. The risk-free rate of 4.39% used for each grant is equal to the zero coupon rate in effect at the time of the grant for instruments with similar expected life.
Pamela Pavco, Ph.D.
Upon termination of Dr. Pavco employment without cause (as defined) by us or by Dr. Pavco as a result of an involuntary termination, she is entitled to payment of (a) any accrued but unpaid salary and unused vacation as of the date of her termination, (b) her salary through March 7, 2008 if during the first six months of the initial term, 12 months’ salary from the date of termination if between six and 18 months after March 27, 2007, no less than six and no more than 12 months’ salary from the date of termination if between 18 and 24 months after March 27, 2007, and six months’ salary then in effect if more than 24 months after March 27, 2007 and (c) continued participation, at our expense, during the severance period (as defined) in any of our sponsored group benefit plans in which Dr. Pavco was participating as of the date of termination.
Additionally, any options issued to Dr. Pavco under our 2007 Incentive Plan, that would have vested during the severance period will vest and become exercisable as of the date of her termination without cause or as a result of involuntary termination. Furthermore, upon the occurrence of a covered transaction, as defined in our 2007 Incentive Plan, all options issued to Dr. Pavco under the 2007 Incentive Plan, will vest and become exercisable. In the event that Dr. Pavco was terminated from the Company without cause at December 31, 2007, the value of her severance package would be approximately $357,300, including salary and benefits of approximately $200,100 and the fair value of stock options that would vest as a result of this termination of approximately $157,200. In addition to the payments upon termination of Dr. Pavco, all options issued to Dr. Pavco under her employment agreement will vest in full and become exercisable as to all of the shares covered thereby upon the occurrence of a covered transaction as defined in our 2007 Incentive Plan. The fair of stock options that would vest as a result of a covered transaction is approximately $226,000. The fair value of the options, based on the following assumptions, was estimated using the Black-Scholes option-pricing model. Due to the fact that we have no history of stock trading, our expected stock-price volatility assumption is based on a combination of implied volatilities of similar entities whose share or option prices are publicly traded. We used a weighted-average expected stock-price volatility of 108.7%. The expected life assumption is based on a simplified method provided for under SAB 107, which averages the contractual term of the Company’s options (ten years) with the ordinary vesting term (four years). The dividend yield of zero is based on the fact that we have no present intention to pay cash dividends. The risk-free rate of 4.55% used for each grant is equal to the zero coupon rate in effect at the time of the grant for instruments with similar expected life.
Dr. Pavco’s severance payments will only be triggered in the event that her employment is terminated by us without cause or by Dr. Pavco herself as a result of an involuntary termination, which, for purposes of her employment agreement, means any of the following: (a) our breach of any material term of the employment agreement; provided that the first occasion of any particular breach shall not constitute such cause unless we have failed to cure such breach within 60 days after receiving written notice from Dr. Pavco stating the nature of such breach (b) a reduction in Dr. Pavco’s salary (c) a reduction in Dr. Pavco’s title, (d) the reduction of


74


Dr. Pavco’s duties from those typically assigned to a Vice President of a similarly situated biotechnology or pharmaceutical company.
In addition to the above, in the event we undergo a change of control (as defined) and Dr. Pavco’s employment is terminated by us or by Dr. Pavco for involuntary termination, within one year after the change of control (other than for cause (as defined)), then: (i) the greater of (a) 50% of Dr. Pavco’s unvested options shall vest immediately, or (b) 12 months’ unvested options shall vest immediately, and (ii) Dr. Pavco will be entitled to (a) any accrued but unpaid salary and unused vacation time as of the date of such termination, (b) 12 months’ of salary from the date of termination, payable in accordance with our normal payroll practice, and (c) continued participation, at our expense and cost, during those 12 months in any of our sponsored group benefit plans in which Dr. Pavco was participating as of the date of termination. In the event that Dr. Pavco was terminated following a change of control, the value of salary and benefits Dr. Pavco would be entitled to receive during those 12 months would be approximately $200,100. As any options held by Dr. Pavco’s at the time of the change of control would vest immediately, the accelerated vesting provisions described above would only apply to options that may be issued to her after the change of control. Because the terms of any such options are unknown, the current fair value of stock options that would vest as a result of such termination cannot be calculated.
Dmitry Samarsky, Ph.D.
Upon termination of Dr. Samarsky employment without cause (as defined), he is entitled to payment of: (a) any accrued but unpaid salary and unused vacation as of the date of his termination (from the current year), (b) six (6) months’ salary from the date of termination (this period shall be referred to as the ’Severance Period”) in the form of salary continuation; and (c) continued participation, at our expense, during the Severance Period in any of our sponsored group benefit plans in which Dr. Samarsky was participating as of the date of termination. In the event that Dr. Samarsky’s employment was terminated from the Company without cause at December 31, 2007, the value of his severance package would be approximately $144,000, including salary and benefits of approximately $86,800 and the fair value of stock options that would vest as a result of this termination of approximately $57,200.
Upon the occurrence of a covered transaction, as defined in the 2007 Incentive Plan, any options issued to Dr. Samarsky under our 2007 Incentive Plan will fully vest and become exercisable. The fair value of stock options that would vest as a result of a covered transaction is approximately $177,000, which was estimated, based on the following assumptions, using the Black-Scholes option-pricing model. Due to the fact that we have no history of stock trading, our expected stock-price volatility assumption is based on a combination of implied volatilities of similar entities whose share or option prices are publicly traded. We used a weighted average expected stock-price volatility of 109.4%. The expected life assumption is based on a simplified method provided for under SAB 107, which averages the contractual term of our options (10 years) with the ordinary vesting term (4 years). The dividend yield of zero is based on the fact that we have no present intention to pay cash dividends. The risk-free rate of 4.39% used for each grant is equal to the zero coupon rate in effect at the time of the grant for instruments with similar expected life.
Employment Agreements
Tod Woolf, Ph.D.
We have entered into an employment agreement with Dr. Woolf under which he is engaged to continue his employment as our President and Chief Executive Officer through December 31, 2008. Dr. Woolf is entitled under his employment agreement to receive an annual base salary of $250,000. On May 23, 2007, after our initial funding and pursuant to the terms of his employment agreement, we granted Dr. Woolf an option to purchase 316,994 shares of our common stock at an exercise price of the then fair market value of $5.00 per share. See discussion above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates — Valuation of Common Stock.” This option has a term of ten years and will vest in equal monthly installments over three years, subject to accelerated vesting if any of the following occur: (a) a covered transaction, as defined in the 2007 Incentive


75


Plan, occurs or (b) CytRx votes its shares of our stock to elect individuals who are (i) employees, officers or directors of CytRx, (ii) employees, officers or directors of any entity that has a contractual business relationship with CytRx, or (iii) employees, officers, directors of any entity that has a contractual business relationship with any officer or director of CytRx to constitute a majority of our board of directors. Dr. Woolf also may be eligible for an annual discretionary bonus, which will be determined in our sole discretion. Under Dr. Woolf’s employment agreement, CytRx agrees to indemnify and hold Dr. Woolf and IPIFINI, Inc., an entity affiliated with him, harmless for any claims which arise from his services as our President and Chief Executive Officer prior to the effective date of his employment agreement. Provisions in Dr. Woolf’s agreement related to payments upon termination are described above in “Potential Payments Upon Termination or Change of Control.”
Stephen DiPalma
We have entered into an employment agreement with Mr. DiPalma under which he is engaged to serve as our Chief Financial Officer. Mr. DiPalma is entitled under his employment agreement to receive an annual base salary of $220,000 and an annual performance bonus for the achievement of certain company and employee performance goals to be established by the Compensation Committee. The bonus for top performance against such established goals will be 30% of Mr. DiPalma’s annual base salary. Pursuant to the terms of his employment agreement, on October 18, 2007 we granted Mr. DiPalma an option to purchase 100,000 shares of our common stock at an exercise price of the then fair market value of $5.00 per share. See discussion above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates — Valuation of Common Stock.” The option will have a term of ten years and will vest and become exercisable in 16 equal quarterly installments beginning on August 28, 2007, subject to accelerated vesting in the event of a covered transaction, as defined in our 2007 Incentive Plan. Provisions in Mr. DiPalma’s agreement related to payments upon termination are described above in “Potential Payments Upon Termination or Change of Control.”
Pamela Pavco, Ph.D.
We have entered into an employment agreement with Dr. Pavco under which she is engaged to serve as our Vice President of Research and Development or Vice President of Pharmaceutical Development for a term of one year. Dr. Pavco is entitled under her employment agreement to receive an annual base salary of $198,000. On May 23, 2007, after the initial funding and pursuant to the terms of her employment agreement, we granted Dr. Pavco an option to purchase 145,311 shares of our common stock at an exercise price of the then fair market value of $5.00 per share. See discussion above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates — Valuation of Common Stock.” The option will have a term of ten years and will vest and become exercisable in 16 equal quarterly installments beginning on June 7, 2007, subject to accelerated vesting in the event of a covered transaction, as defined in our 2007 Incentive Plan. Provisions in Dr. Pavco’s agreement related to payments upon termination, a covered transaction and a change of control are described above in “Potential Payments Upon Termination or Change of Control.”
Dmitry Samarsky, Ph.D.
We have entered into an employment agreement with Dr. Samarsky under which he is engaged to serve as our Vice President of Technology and Business Development. Dr. Samarsky is entitled under his employment agreement to receive an annual base salary of $170,000 and a performance bonus for the achievement of certain performance goals, with the target for top performance set at 16.5%. On June 11, 2007, we granted Dr. Samarsky an option to purchase 105,561 shares of our common stock at an exercise price of the then fair market value of $5.00 per share. See discussion above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates — Valuation of Common Stock.” The option will have a term of ten years and will vest as to 6.25% of such shares on September 25, 2007 and on each of the next 15 quarterly anniversaries thereafter, subject to accelerated vesting in the event of a covered transaction, as defined in our 2007 Incentive Plan, occurs. Provisions in


76


Dr. Samarsky’s agreement related to payments upon termination, change of control or upon a covered transaction are described above in “Potential Payments Upon Termination or Change of Control.”
James Warren
We entered into an employment agreement with Mr. Warren under which he was engaged to serve as our Chief Financial Officer for a term of one year, however, as of August 31, 2007, Mr. Warren has resigned. Mr. Warren was entitled under his employment agreement to receive an annual base salary of $200,000. On May 23, 2007, after our initial funding and pursuant to the terms of his employment agreement, we granted Mr. Warren an option to purchase 158,509 shares of our common stock at an exercise price of the then fair market value of $5.00 per share. See discussion above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates — Valuation of Common Stock.” This option had a term of ten years. Immediately upon the grant, 8/48ths of the option vested and became immediately exercisable. As of the date of Mr. Warren’s resignation, the options issued to him under our 2007 Incentive Plan that would have vested prior to April 30, 2008, or 66,045 common stock options, have vested. Provisions in Mr. Warren’s agreement that related to payments upon termination and a covered transaction are described above in “Potential Payments Upon Termination or Change of Control.”
We may seek to negotiate and enter into written employment agreements with one or more of our other officers. The terms of such employment agreements have not been determined, and there is no assurance as to whether or on what terms we will be able to enter into such employment agreements.
Director Compensation
In the discretion of the board of directors, each director may be paid such fees for his services as a director and be reimbursed for his reasonable expenses incurred in the performance of his duties as director as the board of directors determines from time to time.
The following table sets forth a summary of the compensation paid to certain of our directors in 2007, other than Dr. Woolf. Amounts included under Options awards below represent the fair value of the award calculated under SFAS 123(R).
                 
  Fees Earned
          
  or Paid
     All Other
    
Name
 in Cash ($)  Option Awards ($)  Compensation ($)  Total ($) 
 
Mark. J. Ahn, Ph.D.  $48,000  $143,678  $  $191,678 
Stephen S. Galliker $60,500  $143,678  $  $204,178 
Sanford J. Hillsberg $60,250  $143,678  $  $203,928 
Steven A. Kriegsman $39,000  $143,678  $  $182,678 
Cash Compensation
In 2007, our board of directors approved a director compensation plan that provides that each director who is not an employee will receive the following cash compensation for service on our board of directors and committees of our board of directors:
• an annual retainer fee of $10,000 for each director, payable quarterly,
• an annual retainer fee of $12,000 for the chairperson of each committee of our board of directors other than the audit committee, payable quarterly,
• an annual retainer fee of $20,000 for the chairperson of the audit committee of our board of directors, payable quarterly,
• an annual retainer fee of $32,000 for the Chairman of the board of directors, payable quarterly,
• a fee of $2,000 per board meeting attended by the director ($1,000 if attendance is telephonic), and
• a fee of $1,500 per committee meeting attended by the director ($750 if attendance is telephonic).


77


On April 18, 2008, our board of directors approved a revised director compensation plan to be effective as of that date that provides that each director who is not an employee will receive the following cash compensation for service on our board of directors and committees of our board of directors:
• an annual retainer fee of $24,000 for each director, payable quarterly,
• an annual retainer fee of $12,000 for the chairperson of each committee of our board of directors other than the audit committee, payable quarterly,
• an annual retainer fee of $25,000 for the chairperson of the audit committee of our board of directors, payable quarterly,
• an annual retainer fee of $50,000 for the Chairman of the board of directors, payable quarterly,
• a fee of $3,000 per board meeting attended by the director, such fee payable for meetings attended in person or telephonically,
• fee of $2,500 per audit committee meeting attended by the chair of the committee, such fees payable for meetings attended in person or telephonically,
• a fee of $2,000 per audit committee meeting attended by other directors who are members of the committee, such fees payable for meetings attended in person or telephonically,
• a fee of $2,000 per all other committee meetings attended by the chair of the committee, such fees payable for meetings attended in person or telephonically,
• a fee of $1,500 per all other committee meeting attended by other directors who are members of the committee, such fees payable for meetings attended in person or telephonically, and
• a fee of $750 per each written consent.
Equity Compensation
Each director who is not an employee was granted, on May 23, 2007, a ten-year nonqualified stock option under the 2007 Incentive Plan to purchase 50,000 shares of our common stock at an exercise price equal to $5.00, as discussed above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates — Valuation of Common Stock.” These options vest in four equal quarterly installments, beginning on March 26, 2007 and ending December 31, 2007, and are exercisable for two years following a director’s termination of service as a member of the board of directors, unless the director is terminated for cause.
On January 10, 2008, as part of their annual grant, each non-employee director was granted, an option of 25,000 shares at an exercise price of $5.00 per share. On April 18, 2008 each non-employee director was granted an additional 25,000 shares at an exercise price of $7.50 per share. These options will be fully vested at December 31, 2008. These options have a ten year term and will be exercisable for two years following termination of service as a member of the board of directors, unless the director is terminated for cause.
Reimbursements
Directors will be reimbursed for their expenses incurred in attending board of directors, committee and stockholder meetings, including those for travel, meals and lodging.
Indemnification Agreements
We have entered into director indemnification agreements with each of our directors. Consistent with the indemnification rights that will be provided to all of our directors under our amended and restated certificate of incorporation, we will indemnify and hold harmless each director to the fullest extent permitted or authorized by the Delaware General Corporation Law in effect on the date of the agreement or as such laws may be amended or replaced to increase the extent to which a corporation can indemnify its directors.


78


Tax and Accounting Implications
Deductibility of Executive Compensation
As part of its role, the Compensation Committee reviews and considers the deductibility of executive compensation under Section 162(m) of the Internal Revenue Code, which provides that corporations may not deduct compensation of more than $1.0 million that is paid to certain individuals. We believe that compensation paid to our executive officers generally is fully deductible for federal income tax purposes.
Accounting for Share-Based Compensation
We account for share-based compensation in accordance with the requirements of SFAS 123(R). This accounting treatment has not significantly affected our compensation decisions.
Compensation Committee Interlocks and Insider Participation in Compensation Decisions
There are no “interlocks,” as defined by the Securities and Exchange Commission, or SEC, with respect to any member of the compensation committee. Mr. Kriegsman (chair), Dr. Ahn and Mr. Galliker are the current members of the Compensation Committee, and Mr. Kriegsman was the sole board member in 2006. None of Mr. Kriegsman, Dr. Ahn or Mr. Galliker have ever served as an officer of the Company or acted in such capacity.
ARRANGEMENTS WITH CYTRX CORPORATION
We were incorporated in April 2006 by CytRx and four founding members of our scientific advisory board for the purpose of pursuing the development or acquisition of RNAi-related technologies and assets. We have entered into the following agreements with CytRx.
Contribution Agreement of January 8, 2007
On January 8, 2007, we entered into a contribution agreement with CytRx under which CytRx assigned and contributed to us substantially all of its RNAi-related technologies and assets. The assigned assets consisted primarily of CytRx’s licenses from UMMS and from the Carnegie Institution of Washington relating to fundamental RNAi technologies, as well as equipment situated at CytRx’s Worcester, Massachusetts, laboratory. In connection with the contribution, we assumed primary responsibility for all payments to UMMS and other obligations under the licenses and other assets contributed to us and issued to CytRx 7,040,318 shares of our common stock at approximately $2.45 per share, which represented approximately 85% of our outstanding shares of common stock immediately following the issuance. The number of shares of our common stock issued to CytRx and the price at which such shares were sold was determined as a result of negotiations among our management (comprised at that time of Dr. Woolf and Mr. Warren), CytRx and our other founding shareholders regarding the relative share ownership of CytRx and any other founding shareholder following the contribution, and did not necessarily bear any relation to the fair value of the RXi assets or of our common stock. For a discussion of the valuation for financial accounting purposes of our assets and the fair market value of our shares as of January 8, 2007, see “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates — Valuation of Common Stock.” The actual fair market value of the contributed technologies and assets may be different. The cost to CytRx of the contributed assets acquired by CytRx during the period starting January 8, 2005, through January 1, 2007, was approximately $277,600. These contributed assets consist of payments for licenses of intellectual properties, property and furniture but excludes payments for sponsored research agreements, legal costs to acquire intellectual properties and other research and development expenses related to RNAi during the period.
Reimbursement Agreements
On January 8, 2007, we also entered into a letter agreement with CytRx under which we agreed to reimburse CytRx, following our initial funding, for all organizational and operational expenses incurred by


79


CytRx in connection with our formation and initial operations, and to bear or reimburse CytRx for an allocable share of any investment banking fees, placement agent fees and other offering expenses incurred by CytRx in connection with our fundraising activities. In connection with the April 30, 2007 contribution agreement with CytRx described below in this section under “Contribution Agreement of April 30, 2007,” we reimbursed CytRx in accordance with this letter agreement. There are no further payments or obligations owed in accordance with this letter agreement.
On December 27, 2007, we entered into a letter agreement with CytRx under which we and CytRx agreed to a “fee-sharing” arrangement for expenses arising from the preparation of the registration statement that included the Distribution and Award prospectuses, and our application for the listing of our common stock on the NASDAQ Capital Market. Pursuant to this agreement, we agreed to reimburse CytRx an amount equal to the sum of (i) $30,000 plus (ii) 50% of the total relevant fees and expenses paid by CytRx to certain financial services professionals, including BDO Seidman, LLP. The total amount of the expenses to be reimbursed to CytRx as of March 31, 2008 is approximately $67,000. Also under this agreement CytRx agreed to reimburse us 50% of the total relevant fees and expenses paid by us to our financial printer, our transfer agent and our legal counsel.
UMMS Agreements
As an inducement to UMMS to enter the new licenses and the invention disclosure agreement with us described above under the heading “Business — License Agreements,” on January 10, 2007, CytRx entered into a letter agreement with UMMS regarding our management. Under the letter agreement, CytRx agreed that, during the term of our new UMMS licenses, CytRx will vote their shares of our common stock for the election of our directors and take other actions to ensure that a majority of our board of directors are independent of CytRx. CytRx’s letter agreement with UMMS became effective upon CytRx’s investment in us of $17,000,000, as described below in this section under “Contribution Agreement of April 30, 2007.” Under this letter agreement, if CytRx owns at any time a majority of our outstanding voting power, CytRx agreed that it will reduce its ownership interest in our capital stock to less than a majority as soon as reasonably practicable.
Stockholder and Preemptive Rights Agreement
On February 15, 2007, we entered into a letter agreement with CytRx and certain of our current stockholders. Under this letter agreement, we agreed to grant to CytRx preemptive rights to acquire any new securities, as defined therein, that we propose to sell or issue so that CytRx may maintain its percentage ownership of us. The preemptive rights will expire on January 8, 2012, or such earlier time at which CytRx owns less than 10% of our outstanding common stock. Under this letter agreement, CytRx also undertakes to vote its shares of our stock in the election of our directors and dispose of their shares of our stock in accordance with the terms of its letter agreement with UMMS described above. CytRx has further agreed in this letter agreement to approve of actions that may be adopted and recommended by our board of directors to facilitate any future financing. We amended this letter agreement on July 28, 2008 to adjust certain non-material terms.
Registration Rights Agreement
On April 30, 2007, we entered into a registration rights agreement with CytRx. Under this agreement, we agreed, upon request by CytRx, to use best efforts to cause all of our shares issued to CytRx pursuant to the two contribution agreements to be registered under the Securities Act, with certain exceptions, with all expenses incurred in connection with any such registration will be borne by us. We amended this agreement on July 28, 2008 to adjust certain non-material terms.
Contribution Agreement of April 30, 2007
On April 30, 2007, we entered into a contribution agreement with CytRx under which CytRx invested in us $17.0 million in exchange for 3,273,292 shares of our common stock. We used $2.0 million of this amount


80


to reimburse CytRx for the estimated amount of expenses that had been incurred by CytRx as of April 30, 2007 pursuant to the January 8, 2007 reimbursement agreement described above. We agreed in this contribution agreement that the actual amount of such expenses incurred by CytRx would be subsequently determined and that, to the extent the actual expenses were greater or less than $2.0 million, we would issue to CytRx additional shares of our common stock, or CytRx would return to us for cancellation some number of its shares of our common stock, as the case may be, utilizing the same valuation of our shares used in determining the number of shares issued to CytRx pursuant to this contribution agreement. In September 2007, the actual expenses incurred by CytRx were finally determined to be approximately $3.0 million, and on September 25, 2007, we issued to CytRx 188,387 shares of our common stock as reimbursement of the excess expenses.
The number of shares of our common stock issued to CytRx pursuant to the April 30, 2007 contribution agreement was determined based upon a “pre-money” valuation of RXi of approximately $45.0 million, or approximately $5.00 per share; however, the actual fair value of our common stock may be different than $5.00 per share. This valuation was determined as a result of negotiations between CytRx and our management based, in part, upon the further valuation advice from the third-party valuation advisor originally retained by management of CytRx in connection with the January 8, 2007 contribution of assets and assuming the issuance of 462,112 shares to UMMS pursuant to our license agreements with them. For a detailed discussion of the valuation of the assets of RXi and the fair market value of our shares as of April 30, 2007, see “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates — Valuation of Common Stock.”
CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
Relationships with Employees
Prior to his employment as President and Chief Executive Officer by RXi, Dr. Woolf was a consultant to CytRx with respect to strategic matters regarding its RNAi assets from August 2006 through his ownership of IPIFINI, Inc. This consulting contract resulted in payments to IPIFINI, Inc. of approximately $229,000 in consulting fees reimbursement. As Dr. Woolf is the sole owner of IPIFINI, Inc., the approximate dollar value of his interest in this consulting contract is also approximately $229,000. While serving as the Chief Executive Officer of Sequitur, which was acquired by Invitrogen in 2003, Dr. Woolf helped develop a product which is now the subject of a license agreement between us and Invitrogen Corporation. Pursuant to Dr. Woolf’s agreement with Invitrogen, he and his wife are entitled to payments equal to approximately 7.9%, and other members of his immediate family are entitled to approximately 0.6%, of all therapeutic revenue Invitrogen receives through licensing any intellectual property acquired from Sequitur, which payments related to RXi licenses to date have totaled approximately $20,000 paid to Dr. Woolf, and include all such future revenues paid to Invitrogen by us.
Prior to being employed as our Chief Financial Officer, Mr. Warren was a consultant to CytRx, working on RXi related matters from August 2006 through April 2007. This consultancy resulted in payments to Mr. Warren of approximately $98,000 in consulting fees and reimbursement.
We have entered into employment agreements with all of our named executive officers. For a detailed description of these employment agreements, see “Executive Compensation — Employment Agreements.”
Relationships with Board of Directors
Mr. Hillsberg is an attorney with TroyGould PC, which has represented CytRx since 2003. Mr. Hillsberg has been the Chairman of our board of directors since 2007. For the year ended December 31, 2007 and the year ended December 31, 2006, TroyGould PC billed to CytRx fees of approximately $129,000 and $7,000, respectively, related to RXi matters. We reimbursed CytRx for a portion of these fees pursuant to our reimbursement agreement with CytRx described under “Arrangements With CytRx Corporation,” above. TroyGould PC billed no fees directly to RXi for these periods and does not represent RXi in regards to any current matters.


81


Mr. Kriegsman is the President, Chief Executive Officer and a director of CytRx. Mr. Kriegsman has been a director of RXi since April 2006. Mr. Kriegsman received approximately 209,584 shares of our common stock in connection with the Distribution and the Award , due to his holdings of CytRx stock and options.
Pursuant to a common stock offering approved by our board of directors on May 23, 2007, Dr. Ahn, Mr. Galliker and Mr. Hillsberg each entered into a Subscription Agreement with us and each subscribed for and purchased 10,000 shares of our common stock for the purchase price of $5.00 per share, as discussed above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates — Valuation of Common Stock.” Pursuant to the Subscription Agreements, we have agreed to provide Dr. Ahn, Mr. Galliker and Mr. Hillsberg with notice any time we propose to register any of our common stock under the Securities Act in connection with the public offering of such securities for our own account or on behalf of shareholders other than the respective subscribers, solely for cash or on a form that would also permit registration of the shares covered by the Subscription Agreements. Upon request by any subscriber, we have agreed to use best efforts to cause such subscriber’s shares to be registered under the Securities Act, with certain exceptions, with all expenses incurred in connection with any such registration to be borne by us.
Relationships with Founders
In connection with the organization of our company, on April 3, 2006, each of CytRx and our other founding shareholders and SAB members received a certain number of shares of our common stock in exchange for a nominal contribution. Specifically, Gregory Hannon, Ph.D., Michael Czech, Ph.D. and Craig C. Mello, Ph.D. contributed to us $445 in cash in exchange for 317,019 shares, CytRx contributed to us $500 in cash in exchange for 356,201 shares, and Tariq Rana, Ph.D. contributed to us $665 in cash in exchange for 473,748 shares since as the Company’s initial designee for President, he was permitted to subscribe for more shares than the others. However, we repurchased 156,729 of these shares for $220 on November 6, 2006 upon the Board of Directors’ decision to hire Dr. Woolf as President and CEO of the Company instead of Dr. Rana.
On February 26, 2007, we entered into Scientific Advisory Board Agreements (the “SAB Agreements”) with Tariq Rana, Ph.D., Gregory Hannon, Ph.D., Michael Czech, Ph.D. and Craig C. Mello, Ph.D., who are our founders. At the time of the execution of the SAB Agreements, each of the founders were beneficial owners of more than five percent of our outstanding stock. Pursuant to the SAB Agreements, on May 23, 2007, we granted to each of the founders a stock option under the 2007 Incentive Plan to purchase 52,832 shares of our common stock. In addition, under the SAB Agreements, we will grant each of the founders a stock option under the 2007 Incentive Plan to purchase 52,832 shares of our common stock on February 26, 2008, February 26, 2009 and February 26, 2010 with a per share exercise price equal to the closing price of such stock on the public market on the date of grant unless a founder terminates a SAB Agreement without good reason (as defined) or we terminate a SAB Agreement with cause (as defined) in which case no further option grants will be made to the founder. If our common stock is not publicly traded on the dates specified above, our Board of Directors will grant the stock options to the founders at the first scheduled board meeting after such date and the per share exercise price of the options will be determined in good faith by our Board of Directors. All options granted pursuant to the SAB Agreements are fully vested on the date of grant and have a term of ten years. The fair value of stock options under the SAB Agreement for each founder is approximately $175,000, which was estimated using the Black-Scholes option-pricing model, based on the following assumptions. Due to the fact that we have no history of stock trading, our expected stock-price volatility assumption is based on a combination of implied volatilities of similar entities whose share or option prices are publicly traded. We used a weighted-average expected stock-price volatility of 108.7%. The expected life assumption is based on a simplified method provided for under SAB 107, which averages the contractual term of the Company’s options (10 years) with the ordinary vesting term (immediately). The dividend yield of zero is based on the fact that we have no present intention to pay cash dividends. The risk free rate of 4.51% used for each grant is equal to the zero coupon rate in effect at the time of the grant for instruments with similar expected life. See discussion above in “Management’s Discussion and Analysis of Financial Condition and Results of Operation — Critical Accounting Policies and Estimates.”


82


Additionally, pursuant to a letter agreement between us and each founder dated as of April 30, 2007 (“SAB Letters”), in further consideration of the services to be rendered by the founders under the SAB Agreements, we granted additional stock options on May 23, 2007 under the 2007 Incentive Plan to each of the founders to purchase 26,416 shares of our common stock. Unless a founder terminates a SAB Agreement without good reason (as defined) or we terminate a SAB Agreement with cause (as defined), the options granted pursuant to the SAB Letters will fully vest from and after April 29, 2012 and will have a term of ten years. The fair market value of stock options under the SAB Agreement for each founder is approximately $96,000, which was estimated using the Black-Scholes option-pricing model, based on the following assumptions. Due to the fact that we have no history of stock trading, our expected stock-price volatility assumption is based on a combination of implied volatilities of similar entities whose share or option prices are publicly traded. We used a weight-average expected stock-price volatility of 108.7%. The expected life assumption is based on a simplified method provided for under SAB 107, which averages the contractual term of the Company’s options (10 years) with the ordinary vesting term (immediately). The dividend yield of zero is based on the fact that we have no present intention to pay cash dividends. The risk free rate of 4.55% used for each grant is equal to the zero coupon rate in effect at the time of the grant for instruments with similar expected life. See discussion above in “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Critical Accounting Policies and Estimates.”
Relationship with Other Beneficial Owners of 5% or More of our Common Stock
On June 24, 2008, we entered into a Securities Purchase Agreement pursuant to which we issued and sold to certain investors, including affiliates of Fidelity Investments, an aggregate of 1,073,299 shares of our common stock in a private placement at a price of $8.12 per share. We agreed to file a registration statement covering the resale of all shares issued in the private placement, with all expenses incurred in connection with such registration to be borne by us.
Review and Approval of Related Party Transactions
The board of directors reviews and approves transactions with directors, officers, and holders of more than 5% of our voting securities and their affiliates, or each, a related party. Prior to board consideration of a transaction with a related party, the material facts as to the related party’s relationship or interest in the transaction are disclosed to the board, and the transaction is not considered approved by the board unless a majority of the directors who are not interested in the transaction approve the transaction. Further, when stockholders are entitled to vote on a transaction with a related party, the material facts of the related party’s relationship or interest in the transaction are disclosed to the stockholders, who must approve the transaction in good faith. CytRx’s Activities as a Promoter Information relating to CytRx’s activities as a promoter are described above in “Arrangements with CytRx Corporation,” “Contribution Agreement of January 8, 2007” and “Contribution Agreement of April 30, 2007.”
Director Independence
Our board of directors has reviewed the materiality of any relationship that each of our directors has with us, either directly or indirectly. Based on this review, the board has determined that the following directors are “independent directors” as defined by NASDAQ: Messrs. Hillsberg and Galliker and Dr. Ahn.


83


BENEFICAL OWNERSHIP OF CERTAIN OWNERS AND MANAGMENT
The following tables set forth information with respect to the beneficial ownership of our common stock as of July 1, 2008 by:
• any person known by us to be the beneficial owner of 5% or more of our common stock, including any “group” as that term is defined in the Exchange Act,
• each director, our named executive officers identified in the “Management-Executive Compensation” section above, and
• all of our directors and executive officers as a group.
Beneficial ownership is determined in accordance with SEC rules, and generally includes voting or investment power with respect to securities. Shares of common stock subject to options, warrants and convertible securities that are currently exercisable or convertible within 60 days are deemed to be outstanding and to be beneficially owned by the person holding the options, warrants or convertible securities for the purpose of computing the percentage ownership of the person, but are not treated as outstanding for the purpose of computing the percentage ownership of any other person.
Unless otherwise noted, the information below is based onindicted herein, the number of shares of our common stock beneficially ownedto be outstanding after this offering is based on 24,176,475 shares of common stock outstanding as of March 31, 2019 and excludes:

·17,698,061 shares of common stock issuable as of the date hereof upon the exercise of common stock warrants outstanding as of March 31, 2019 at a weighted average exercise price of $5.31 per share (including an aggregate of 1,000,000 shares of common stock issued between April 1, 2019 and May 31, 2019 upon the exercise of warrants pursuant to that certain warrant exercise agreement dated March 6, 2019), and 1,000,000 additional shares of common stock issuable as of the date hereof upon exercise of warrants issued subsequent to March 31, 2019, which have an exercise price of $1.40 per share;

·1,334,321 shares of common stock issuable upon the exercise of stock options outstanding as of March 31, 2019 at a weighted-average exercise price of $11.94 per share;

·12,758 shares of common stock issuable upon settlement of outstanding RSU awards as of March 31, 2019;

·362,208 shares of common stock available for future issuance under the 2017 Plan, as of March 31, 2019;

·265,131 shares of common stock available for future issuance under the ESPP, as of March 31, 2019; and

·

The exercise by the underwriters of their over-allotment option to purchase additional shares of common stock and/or common warrants.

49

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 public offering price per share of our common stock and the as adjusted net tangible book value per share of our common stock after this offering.

Our historical net tangible book deficit as of March 31, 2019 was $7.5 million, or $(0.31) per share of our common stock. Historical net tangible book deficit per share represents the amount of our total tangible assets less total liabilities, divided by each person or entity at July 1, 2008 and the number of shares subjectof our common stock outstanding as of March 31, 2019.

Our pro forma net tangible book deficit as of March 31, 2019 was $6.4 million, or $(0.25) per share of our common stock. Pro forma net tangible book deficit per share represents total tangible assets less total liabilities, divided by the number of shares of our common stock outstanding as of March 31, 2019, after giving effect to any optionsissuance of 1,000,000 shares of common stock upon the exercise of common stock warrants between April 1, 2019 and May 31, 2019.

After giving effect to the issuance and sale of 47,619,048 shares of our common stock in this offering at an assumed public offering price of $0.42 per share and accompanying common warrant, which is the last reported sale price of our common stock on Nasdaq on June 11, 2019, and after deducting the underwriting discounts and commissions and estimated offering expenses payable by us, and assuming no issuance of pre-funded warrants, grantedour as adjusted net tangible book value as of March 31, 2019 would have been $11.7 million, or $0.16 per share. This represents an immediate increase in net tangible book value per share of $0.41 to these individualsexisting stockholders and immediate dilution of $0.26 per share to new investors purchasing common stock in this offering. Dilution per share to new investors is determined by subtracting as adjusted net tangible book value per share after this offering from the public offering price per share paid by new investors. The following table illustrates this dilution on a per share basis:

Assumed public offering price per share     $0.42 
Historical net tangible book deficit per share $(0.31)    
Increase per share attributable to pro forma adjustments  0.06     
Pro forma net tangible book deficit per share at March 31, 2019  (0.25    
Increase in net tangible book value per share attributable to new investors  0.41     
As adjusted net tangible book value per share after this offering   $0.16 
Dilution per share to new investors     $0.26 

Each $0.10 increase (decrease) in the assumed public offering price of $0.42 per share and accompanying common warrant, which is the last reported sale price of our common stock on Nasdaq on June 11, 2019, would increase (decrease) our as adjusted net tangible book value per share after this offering by approximately $0.06 and the dilution per share to new investors purchasing shares in this offering by $0.04 assuming the number of securities offered by us, as set forth on the cover page of this prospectus, remains the same, no pre-funded warrants are issued, and after deducting underwriting discounts and commissions and estimated offering expenses payable by us. We may also increase or decrease the number of securities to be issued in this offering. Each increase (decrease) of 1.0 million shares and accompanying common warrants offered by us would increase (decrease) our as adjusted net tangible book value per share and the dilution per share and accompanying common warrant to new investors purchasing securities in this offering by $0.004 and ($0.002), respectively assuming that the assumed public offering price remains the same, no pre-funded warrants are exercisable within 60 daysissued, and after deducting underwriting discounts and commissions and estimated offering expenses payable by us. The information discussed above is illustrative only and will be adjusted based on the actual public offering price and other terms of July 1, 2008, which arethis offering as determined between us and the underwriters at pricing.

Except as otherwise indicated by footnote.

         
  Amount and Nature
    
  of Beneficial
  Percentage of
 
Name of Beneficial Owner
 Ownership  Outstanding Shares 
 
CytRx Corporation(1)  6,268,881   45.6%
Investment Funds affiliated with Fidelity Investments(2)  2,049,622   14.9%
Tod Woolf, Ph.D.(3)  135,524   * 
Stephen J. DiPalma(4)  26,214   * 
James Warren(5)  66,045   * 
Pamela Pavco, Ph.D.(6)  48,023   * 
Dmitry Samarsky, Ph.D.(7)  27,808   * 
Mark J. Ahn, Ph.D.(8)  85,000   * 
Stephen S. Galliker(8)  85,000   * 
Sanford J. Hillsberg(8)(9)  85,000   * 
Steven A. Kriegsman(10)  284,584   2.1%
All executive officers and directors as a group — 8 persons(11)  843,198   5.9%
herein, the number of shares of our common stock to be outstanding after this offering is based on 24,176,475 shares of common stock outstanding as of March 31, 2019 and excludes:

·
Represents less than 1% of the outstanding shares of our common stock.
(1)The address for CytRx is 11726 San Vicente Boulevard, Suite 650, Los Angeles, California 90049.
(2)Holdings as of June 30, 2008 as reported on Schedule 13G filed with the SEC on July 10, 2008 by the Selling Stockholder consist of (i) shares owned by Fidelity Mt. Vernon Street Trust: Fidelity New Millennium Fund (“FNMF”), (ii) shares owned by Fidelity Trend Fund: Fidelity Trend Fund (“FTF”), (iii) shares owned by Fidelity Advisor Series I: Fidelity Advisor Strategic Growth Fund (“FASGF”), (iv) shares owned by Variable Insurance Product Fund IV: Growth Stock Portfolio (GSP”), (v) shares owned by Fidelity Mt. Vernon Street Trust: Fidelity Aggressive Growth Fund (“FAGF”), (vi) shares owned by Fidelity Securities Fund: Fidelity Advisor Aggressive Growth Fund (“FAAGF”), and (vii) shares owned by Variable Insurance Products Fund III: Aggressive Growth Portfolio (“AGP” and, together with FNMF, FTF, FASGF, GSP, FAGF, and FAAGF, the “Funds”). FAGF holds 1,101,923 shares, or 8.0% of the Company’s total outstanding common stock, and FNMF holds 744,517 shares, or 5.4%, of the Company’s total outstanding common stock.


84


Each of the Funds is a registered investment fund advised by Fidelity Management & Research Company (“FMR Co.”), a registered investment adviser under the Investment Advisers Act of 1940, as amended. FMR Co., 82 Devonshire Street, Boston, Massachusetts 02109, a wholly-owned subsidiary of FMR Corp. and an investment advisor registered under Section 203 of the Investment Advisors Act of 1940, is the beneficial owner of 2,049,622 shares of the outstanding common stock of the Company held by the Funds.
Edward C. Johnson 3d, FMR Corp., through its control of FMR Co., and the Funds each has sole power to dispose of the shares owned by the Funds.
Neither FMR Corp. nor Edward C. Johnson 3d, Chairman of FMR Corp., has the sole power to vote or direct the voting of the shares owned directly by each Fund, which power resides with such Fund’s Board of Trustees.
The Funds are affiliates of a broker-dealer. The Funds purchased the common stock in the ordinary course of business and, at the time of purchase of the common stock to be resold, the Funds did not have any agreements or understandings, directly or indirectly, with any person to distribute the common stock.
(3)Consists of 135,52417,698,061 shares of common stock underlyingissuable as of the date hereof upon the exercise of common stock options exercisable within 60 dayswarrants outstanding as of July 1, 2008.
(4)ConsistsMarch 31, 2019 at a weighted average exercise price of 26,214$5.31 per share (including an aggregate of 1,000,000 shares of common stock underlying stock options exercisable within 60 daysissued between April 1, 2019 and May 31, 2019 upon the exercise of July 1, 2008.
(5)Mr. Warren exercised his optionwarrants pursuant to purchase 66,045that certain warrant exercise agreement dated March 6, 2019), and 1,000,000 additional shares of common stock on November 30, 2007 for a total purchaseissuable as of the date hereof upon exercise of warrants issued subsequent to March 31, 2019, which have an exercise price of $330,225.$1.40 per share;

(6)Consists of 48,023·1,334,321 shares of common stock underlyingissuable upon the exercise of stock options exercisable within 60 daysoutstanding as of July 1, 2008.March 31, 2019 at a weighted-average exercise price of $11.94 per share;

(7)Includes 27,808·12,758 shares of common stock underlying stock options exercisable within 60 daysissuable upon settlement of July 1, 2008.outstanding RSU awards as of March 31, 2019;

(8)Includes 75,000·362,208 shares of common stock underlying stock options exercisable within 60 daysavailable for future issuance under the 2017 Plan, as of July 1, 2008.March 31, 2019;

(9)The shares shown do not include shares owned by TroyGould PC.
(10)·Includes 75,000265,131 shares of common stock underlying stock optionsavailable for future issuance under the ESPP, as of March 31, 2019; and exercisable within 60 days of July 1, 2008. Mr. Kriegsman is the CEO and a director of CytRx, but acting alone, he has neither voting nor investment power with respect to the shares beneficially owned by CytRx. As a result, Mr. Kriegsman disclaims beneficial ownership of such shares.

(11)Includes 537,569·

The exercise by the underwriters of their over-allotment option to purchase additional shares of common stock underlying stock options exercisable within 60 days of July 1, 2008.and/or common warrants.


85

50


DESCRIPTION OF CAPITAL STOCK
Authorized Capital Stock
Our authorized

The following description of our capital stock consistssummarizes the material terms and provisions of 50,000,000our common stock and our preferred stock. For the complete terms of our common stock, please refer to our amended and restated certificate of incorporation and our amended and restated bylaws, each as amended to date, that are incorporated by reference into the registration statement of which this prospectus is a part or may be incorporated by reference into this prospectus. The terms of these securities may also be affected by the Delaware General Corporation Law, or the DGCL. The summary below is qualified in its entirety by reference to our amended and restated certificate of incorporation and amended and restated bylaws, each as in effect at the time of any offering of securities under this prospectus.

General

Our amended and restated certificate of incorporation authorizes us to issue up to 350,000,000 shares of common stock, $0.0001 par value $0.0001 per share, and 5,000,000 shares of preferred stock, $0.0001 par value $0.0001 per share. A total

As of 13,757,731March 31, 2019, there were:

·24,176,475 shares of common stock outstanding;

·1,334,321 shares of common stock issuable upon exercise of outstanding options;

·12,758 shares of common stock issuable upon settlement of outstanding RSUs; and

·warrants outstanding for the purchase of an aggregate of 17,698,061 shares of common stock;

Common Stock

Voting

Each holder of our common stock are currently outstanding.

Common Stock
The holders of our common stock areis entitled to one vote for each share on all matters voted on bysubmitted to a vote of the stockholders, including electionsthe election of directors,directors. Our amended and except as otherwise required by law or provided in any resolution adopted by our board with respect to any series of preferred stock, the holders of such shares possess all voting power. Ourrestated certificate of incorporation doesand amended and restated bylaws do not provide for cumulative voting rights. Because of this absence of cumulative voting, the holders of a majority of the shares of common stock entitled to vote in theany election of directors. directors can elect all the directors standing for election, if they should so choose.

Dividends

Subject to preferences that may be applicable to any preferential rights of anythen outstanding series of our preferred stock, created by our board from time to time, the holders of common stock are entitled to suchreceive ratably those dividends, if any, as may be declared from time to time by our board from fundsof directors out of legally available therefore and uponfunds.

Liquidation

In the event of our dissolution or liquidation, areholders of common stock will be entitled to receive pro rata allshare ratably in the net assets legally available for distribution to such holders. Ourstockholders after the payment of all our debts and other liabilities and the satisfaction of any preferential rights that may be granted to the holders of any then outstanding shares of preferred stock.

Rights and Preferences

Holders of common stock is not redeemable. For a more complete discussion of our dividend policy, please see “Dividend Policy.”

The holders of our common stock, other than CytRx, have no preemptive, rights.conversion or subscription rights, and there is no redemption or sinking fund provisions applicable to the common stock. The rights, preferences, and privileges of the holders of common stock are subject to, and may be adversely affected by, the rights of the holders of shares of any series of preferred stock.

Fully-paid

All the outstanding shares of our common stock which we may designateare, and issue in the future. Additionally, under our agreement with CytRx and our current stockholders, with some exceptions, CytRx has preemptive rights to acquire a portionshares of common stock issued upon the conversion of any new securities soldconvertible into our common stock will be, fully paid and non-assessable. The shares of common stock offered by this prospectus or upon the conversion of any preferred stock or debt securities or exercise of any warrants offered pursuant to this prospectus, when issued by us so as to maintain their percentage beneficial ownership of us atand paid for, will also be, fully paid and non-assessable.

Our common stock is listed on The Nasdaq Capital Market under the time of such sale or issuance.

symbol “SLS.”

Preferred Stock

We are authorized

Our board of directors has the authority, without further action by the stockholders, to issue up to 5,000,000 shares of preferred stock par value $0.0001 per share. in one or more series and:

·to establish from time to time the number of shares to be included in each such series;

51

·to fix the rights, preferences and privileges of the shares of each wholly unissued series and any qualifications, limitations or restrictions thereon; and

·to increase or decrease the number of authorized shares of any such series (but not below the number of shares of such series then outstanding).

Our board of directors without further action bymay authorize the holdersissuance of our common stock, may issue shares of our preferred stock. Our board is vested with the authority to fix by resolution the designations, preferences and relative, participating, optional or other special rights, and such qualifications, limitations or restrictions thereof, including, without limitation, redemption rights, dividend rights, liquidation preferences and conversion or exchange rights of any class or series of preferred stock, and to fix the number of classes or series of preferred stock, the number of shares constituting any such class or series and the voting powers for each class or series.

The authority possessed by our board to issue preferred stock could potentially be used to discourage attempts by third parties to obtain control of RXi through a merger, tender offer, proxy contest or otherwise by making such attempts more difficult or more costly. Our board may issue preferred stock with voting rights or conversion rights that if exercised, could adversely affect the voting power or other rights of the holders of our common stock. The issuance of preferred stock, while providing flexibility in connection with possible acquisitions and other corporate purposes, could, among other things, delay, defer or prevent a change of control of our company and may adversely affect the market price of the common stock and the voting and other rights of the holders of common stock. There

Warrants

Our outstanding warrants contain customary net exercise provisions and contain provisions for the adjustment of the exercise price and the number of shares issuable upon the exercise of the warrant in the event of certain stock dividends, stock splits, recapitalizations, reclassifications, consolidations and other fundamental transactions. In addition, from the original issue date until July 16, 2019 the initial exercise price and number of shares subject to purchase in the warrants issued in connection with our Series A Preferred are nosubject to anti-dilution protection in the event of non-exempt equity issuances at a price per share lower than the current agreements or understandings with respectexercise price of $1.10 per share. Upon completion of this offering, we intend to take such steps as are necessary to reduce the exercise price of all of the warrants that were issued on July 16, 2018 and that remain outstanding, to the issuancepublic offering priceper share of preferredcommon stock and our board has no present intention to issue any shares of preferred stock.

accompanying common warrant. 

Possible Anti-Takeover Effects of Provisions of theDelaware Law and Our Certificate of Incorporation and By-Laws

BoardBylaws

Provisions of Directors

Ourthe DGCL and our amended and restated certificate of incorporation providesand amended and restated bylaws could make it more difficult to acquire our company by means of a tender offer, a proxy contest or otherwise, or to remove incumbent officers and directors. These provisions, summarized below, are expected to discourage certain types of coercive takeover practices and takeover bids that our board of directors may consider inadequate and to encourage persons seeking to acquire control of our company to first negotiate with our board of directors. We believe that the numberbenefits of increased protection of our ability to negotiate with the proponent of an unfriendly or unsolicited proposal to acquire or restructure our company outweigh the disadvantages of discouraging takeover or acquisition proposals because, among other things, negotiation of these proposals could result in an improvement of their terms.

Classified Board

Our amended and restated certificate of incorporation and our amended and restated bylaws provide that our board of directors is divided into three classes. The directors designated as Class I directors have terms expiring at the annual meeting of stockholders in 2020. The directors designated as Class II directors will be fixed from time to time exclusively pursuant to a resolution adopted by a majorityhave terms expiring at the annual meeting of stockholders in 2021, and the total numberdirectors designated as Class III directors will have terms expiring at the annual meeting of directors thenstockholders in office or by a sole remaining director. Our directors, other than those who may2019. Directors for each class will be elected byat the holdersannual meeting of our preferred stock, will be classified, with respect tostockholders held in the timeyear in which the term for which they severally hold office, into three classes, as nearly equal in number as possible. Each directorthat class expires and thereafter will serve for a term ending on the date of the third annualthree years. At any meeting following the annual meeting at which such director was elected, except that each initial director in Class I will serveof stockholders for a term ending on the date of the annual meeting in 2011, each initial director in Class II


86


will serve for a term ending on the date of the annual meeting in 2009, and each initial director in Class III will serve for a term ending on the date of the annual meeting in 2010, with each director to hold office until his or her successor is duly elected and qualified.
Our certificate of incorporation provides that, except as otherwise provided for or fixed by or pursuant to a certificate of designations setting forth the rights of the holders of any class or series of our preferred stock, newly created directorships resulting from any increase in the number of directors and any vacancies on our board resulting from death, resignation, disqualification, removal or other cause will be filled by the affirmative vote of a majority of the remaining directors then in office, even though less than a quorum of our board or by a sole remaining director. Any director elected in accordance with the preceding sentence will hold office for the unexpired term of his predecessor in office, and a director chosen to fill a position resulting from an increase in the number of directors shall hold office until the next election of the class for which such director shall have been chosen, subject to the election and qualification of his successor and to his earlier death, resignation or removal. No decrease in the number of directors constituting our board will shorten the term of any incumbent director. Subject to the rights of holders of our preferred stock, any director may be removed from office only for cause and only by the affirmative vote of the holders of at least 75% of the outstanding shares of capital stock entitled to vote generally in the election of directors voting together asat which a single class, cast atquorum is present, the election will be determined by a meetingplurality of the votes cast by the stockholders called for that purpose.
These provisions would preclude a third party from removing incumbent directors and simultaneously gaining control of our board by fillingentitled to vote at the vacancies created by removal with its own nominees.election. Under the classified board provisions, described above, it would take at least two elections of directors for any individual or group to gain control of our board. Accordingly, these provisions could discourage a third party from initiating a proxy contest, making a tender offer or otherwise attempting to gain control of us.
our company.

Special Meetings

Removal of Directors

Our amended and Stockholder Actionrestated bylaws provide that our stockholders may only remove our directors with cause.

Amendment

Our amended and restated certificate of incorporation and by-lawsour amended and restated bylaws provide that the affirmative vote of the holders of at least 75% of our voting stock then outstanding is required to amend certain provisions relating to the number, term, election and removal of our directors, the filling of our board vacancies, stockholder notice procedures, the calling of special meetings of stockholders and the indemnification of directors. Further, any action required or permitted toamendments of our amended and restated bylaws must be takenapproved by our stockholders as our amended and restated certificate of incorporation does not authorize our board of directors to amend our Bylaws.

Size of Board and Vacancies

Our amended and restated bylaws provide that the number of directors on our board of directors is fixed exclusively by our board of directors. Newly created directorships resulting from any increase in our authorized number of directors will be filled by a majority of our board of directors then in office, provided that a majority of the entire board of directors, or a quorum, is present and any vacancies in our board of directors resulting from death, resignation, retirement, disqualification, removal from office or other cause will be filled generally by the majority vote of our remaining directors in office, even if less than a quorum is present.

52

Special Stockholder Meetings

Our amended and restated certificate of incorporation provides that only the Chairman of our board of directors, our Chief Executive Officer or our board of directors pursuant to a resolution adopted by a majority of the total number of directors we would have if there were no vacancies may call special meetings of our stockholders.

Stockholder Action by Unanimous Written Consent

Our amended and restated certificate of incorporation expressly eliminates the right of our stockholders to act by written consent.

Requirements for Advance Notification of Stockholder Nominations and Proposals

Our amended and restated bylaws provide advance notice procedures with respect to stockholder proposals and nomination of candidates for election as directors other than nominations made by or at the direction of board of directors or a committee of our board of directors.

No Cumulative Voting

The DGCL provides that stockholders are denied the right to cumulate votes in the election of directors unless our certificate of incorporation provides otherwise. Our amended and restated certificate of incorporation does not provide for cumulative voting.

Undesignated Preferred Stock

The authority that is possessed by our board of directors to issue preferred stock could potentially be affected atused to discourage attempts by third parties to obtain control of our company through a duly called annualmerger, tender offer, proxy contest, or special meetingotherwise by making it more difficult or costlier to obtain control of such stockholdersour company. Our board of directors may issue preferred stock with voting rights or conversion rights that, if exercised, could adversely affect the voting power of the holders of common stock.

Authorized but Unissued Shares

Our authorized but unissued shares of common stock and at any time during whichpreferred stock will be available for future issuance without stockholder approval. We may use additional shares for a classvariety of purposes, including future public offerings to raise additional capital, to fund acquisitions and as employee compensation. The existence of authorized but unissued shares of common stock and preferred stock could render more difficult or discourage an attempt to obtain control of our company by means of a proxy contest, tender offer, merger or otherwise.

The above provisions may deter a hostile takeover or delay a change in control or management of our company.

Transfer Agent and Registrar

The transfer agent and registrar for our capital stock is registered underComputershare Trust Company, N.A. Its address is 462 South Fourth St., Suite 1600, Louisville, KY 40202. Its telephone number is (800) 962-4284.

53

DESCRIPTION OF SECURITIES WE ARE OFFERING

We are offering (i) 47,619,048 shares of our common stock or pre-funded warrants and (ii) common warrants to purchase up to 47,619,048 shares of our common stock. Each share of common stock and pre-funded warrant is being sold together with a common warrant to purchase one (1) share of common stock. The shares of common stock, pre-funded warrants and accompanying common warrants will be issued separately. We are also registering the Exchange Act,shares of common stock issuable from time to time upon exercise of the pre-funded warrants and common warrants offered hereby.

Common Stock

The material terms and provisions of our stockholders maycommon stock and each other class of our securities that qualifies or limits our common stock are described in the section entitled “Description of Capital Stock” beginning on page 51 of this prospectus.

Pre-Funded Warrants

The following summary of certain terms and provisions of pre-funded warrants that are being offered hereby is not take any action by written consent in lieu of a meeting. Except as otherwise required by lawcomplete and is subject to, and qualified in its entirety by, the rightsprovisions of the holderspre-funded warrant, the form of anywhich is filed as an exhibit to the registration statement of our preferred stock, special meetingswhich this prospectus forms a part. Prospective investors should carefully review the terms and provisions of our stockholdersthe form of pre-funded warrant for any purpose or purposesa 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 $0.01. The pre-funded warrants will be immediately exercisable and may be calledexercised at any time by the chairman of the board, if any, the chief executive officer (or if there is no chief executive officer, the President) or the board of directors, but special meetings may not be called by any other person or persons. These provisions may have the effect of delaying consideration of a stockholder proposal until the next annual meeting unlesspre-funded warrants are exercised in full. 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 and the exercise price.

Exercisability

The pre-funded warrants will be exercisable, at the option of each holder, in whole or in part, by delivering to us a special meeting is calledduly executed exercise notice accompanied by payment in full for the chairmannumber of the board, the chief executive officer or the boardshares of directors.

Advance Notice Procedures
Our by-laws provide that whenever stockholders are required or permitted to take any action at a meeting, a written notice of the meeting shall be given that shall state the place, date and hour of the meeting, andour common stock purchased upon such exercise (except in the case of a special meeting, the purpose or purposes for which the meeting is called. Any business transacted atcashless exercise as discussed below). A holder (together with its affiliates) may not exercise any special meetingportion of the stockholderspre-funded warrant to the extent that the holder would own more than 4.99% of the outstanding common stock immediately after exercise, except that upon at least 61 days’ prior notice from the holder to us, the holder may increase the amount of ownership of outstanding stock after exercising the holder’s pre-funded warrants. No fractional shares of common stock will be limited to matters relatingissued in connection with the exercise of a pre-funded warrant. In lieu of fractional shares, we will pay the holder an amount in cash equal to the purposefractional amount multiplied by the exercise price.

Cashless Exercise

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 purposes statedin part) the net number of shares of common stock determined according to a formula set forth in the noticepre-funded warrants.

Fundamental Transaction

In the event of a fundamental transaction, as described in the pre-funded warrants and generally including any reorganization, recapitalization or reclassification of our common stock, the sale, transfer or other disposition of all or substantially all of our properties or assets, our consolidation or merger with or into another person, the acquisition of more than 50% of our outstanding common stock, or any person or group becoming the beneficial owner of 50% of the meeting. Unlessvoting power represented by our outstanding common stock, the holders of the pre-funded warrants will be entitled to receive upon exercise of the pre-funded warrants the kind and amount of securities, cash or other property that the holders would have received had they exercised the pre-funded warrants immediately prior to such fundamental transaction.

Transferability

Subject to applicable laws, a pre-funded warrant may be transferred at the option of the holder upon surrender of the pre-funded warrant to us together with the appropriate instruments of transfer.

Exchange Listing

We do not intend to list the pre-funded warrants on any securities exchange or nationally recognized trading system.

Rights as a Stockholder

Except as otherwise provided in the pre-funded warrants or by law,virtue of such holder’s ownership of shares of our common stock, the certificateholders of incorporationthe pre-funded warrants do not have the rights or privileges of holders of our by-laws,common stock, including any voting rights, until they exercise their pre-funded warrants.

Common Warrants

The following summary of certain terms and provisions of the writtencommon warrants that are being offered hereby is not complete and is subject to, and qualified in its entirety by, the provisions of the common warrants, the form of which is 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 common warrant for a complete description of the terms and conditions of the common warrants.

Duration and Exercise Price

Each common warrant offered hereby will have an initial exercise price per share equal to $            per share (representing 110% of the public offering price). The common warrants will be immediately exercisable and will expire on the fifth anniversary of the original issuance date. 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 and the exercise price. See also “Antidilution” below. The common warrants will be issued separately from the common stock and pre-funded warrants, and may be transferred separately immediately thereafter. A common warrant to purchase one share of our common stock will be issued for every one share of common stock (or pre-funded warrant, as applicable) purchased in this offering.

Exercisability

The common warrants will be exercisable, at the option of each holder, in whole or in part, by delivering a duly executed exercise notice accompanied by payment in full for the number of shares of our common stock purchased 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 common warrant to the extent that the holder would own more than [4.99][9.99]% of the outstanding common stock immediately after exercise, except that upon at least 61 days’ prior notice from the holder to us, the holder may increase the amount of ownership of outstanding stock after exercising the holder’s warrants. No fractional shares of common stock will be issued in connection with the exercise of a common warrant. In lieu of fractional shares, we will pay the holder an amount in cash equal to the fractional amount multiplied by the exercise price.

Cashless Exercise

If, at the time a holder exercises its common warrants, a registration statement registering the issuance of the shares of common stock underlying the common warrants under the Securities Act is not then effective or available, then 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 determined according to a formula set forth in the common warrants.In addition, the common warrants also provide that, beginning 45 days after issuance, each warrant may be exercised at the option of the holder on a cashless basis, in whole or in part for a whole number of shares, for three (3) shares of common stock, if during the period of time between the date that is 45 days after issuance and the date that is 15 months after issuance, the five-day volume weighted average price of our common stock during any five (5) consecutive trading days is lower than the then-applicable exercise price per share. 

Anti-Dilution

In addition to the adjustments noted above under “Duration and Exercise Price,” common warrants also contain anti-dilution protection upon the issuance of any meeting must be given not less than ten norcommon stock, securities convertible into common stock or certain other issuances at a price below the then-existing exercise price of the warrants, with certain exceptions. The terms of the warrants, including these anti-dilution protections, may make it difficult for us to raise additional capital at prevailing market terms in the future.

Fundamental Transaction

In the event of a fundamental transaction, as described in the common warrants and generally including any reorganization, recapitalization or reclassification of our common stock, the sale, transfer or other disposition of all or substantially all of our properties or assets, our consolidation or merger with or into another person, the acquisition of more than 60 days before50% of our outstanding common stock, or any person or group becoming the beneficial owner of 50% of the voting power represented by our outstanding common stock, the holders of the pre-funded warrants will be entitled to receive upon exercise of the common warrants the kind and amount of securities, cash or other property that the holders would have received had they exercised the pre-funded warrants immediately prior to such fundamental transaction. In addition, in the event of a fundamental transaction which is approved by our Board (but not in a fundamental transaction which is not approved by our Board), the holders of the common warrants have the right to require us or a successor entity to redeem the common warrant for the consideration paid in the fundamental transaction in the amount of the Black Scholes value of the unexercised portion of the common warrant on the date of the meeting to each stockholder entitled to vote at such meeting.

Amendment
The affirmative vote of at least 75%consummation of the outstandingfundamental transaction.

Transferability

Subject to applicable laws, a common warrant may be transferred at the option of the holder upon surrender of the common warrant together with the appropriate instruments of transfer.

Exchange Listing

We do not intend to list the common warrants on any securities exchange or nationally recognized trading system.

Right as a Stockholder

Except as otherwise provided in the common warrants or by virtue of such holder’s ownership of shares of capitalour common stock, entitledthe holders of the common warrants do not have the rights or privileges of holders of our common stock, including any voting rights, until they exercise their common warrants.

54

MATERIAL U.S. FEDERAL INCOME TAX CONSEQUENCES TO HOLDERS OF COMMON STOCK AND WARRANTS

The following is a summary of the material U.S. federal income tax consequences of the acquisition, ownership and disposition of our common stock and the pre-funded warrants, and the acquisition, ownership, exercise, expiration or disposition of the common warrants, but does not purport to vote generallybe a complete analysis of all the potential tax considerations relating thereto. This summary is based upon the provisions of the Internal Revenue Code of 1986, as amended, or the Code, Treasury Regulations promulgated thereunder, administrative rulings and judicial decisions, all as of the date hereof. These authorities may be changed or subject to differing interpretations, possibly with retroactive effect, so as to result in U.S. federal income tax consequences different from those set forth below. We have not sought and will not seek any ruling from the Internal Revenue Service, or the IRS, with respect to the statements made and the conclusions reached in the electionfollowing summary, and there can be no assurance that the IRS or a court will agree with such statements and conclusions.

This summary also does not address the tax considerations arising under the laws of directors, voting togetherany U.S. state or local or any non-U.S. jurisdiction, estate or gift tax, the 3.8% Medicare tax on net investment income or any alternative minimum tax consequences. In addition, this discussion does not address tax considerations applicable to a holder’s particular circumstances or to a holder that may be subject to special tax rules, including, without limitation:

·banks, insurance companies or other financial institutions;

·tax-exempt or government organizations;

·brokers or dealers in securities or currencies;

·traders in securities that elect to use a mark-to-market method of accounting for their securities holdings;

·persons that own, or are deemed to own, more than five percent of our capital stock;

·certain U.S. expatriates, citizens or former long-term residents of the United States;

·persons who hold our common stock and pre-funded warrants or common warrants as a position in a hedging transaction, “straddle,” “conversion transaction,” synthetic security, other integrated investment, or other risk reduction transaction;

·persons who do not hold our common stock and pre-funded warrants or common warrants as a capital asset within the meaning of Section 1221 of the Code (generally, for investment purposes);

·persons deemed to sell our common stock and pre-funded warrants or common warrants under the constructive sale provisions of the Code;

·pension plans;

·partnerships, or other entities or arrangements treated as partnerships for U.S. federal income tax purposes, or investors in any such entities;

·persons for whom our stock constitutes “qualified small business stock” within the meaning of Section 1202 of the Code;

·integral parts or controlled entities of foreign sovereigns;

·controlled foreign corporations;

·passive foreign investment companies and corporations that accumulate earnings to avoid U.S. federal income tax; or

·persons that acquire our common stock or pre-funded warrants or common warrants as compensation for services.

In addition, if a partnership, including any entity or arrangement classified as a single class,partnership for U.S. federal income tax purposes, holds our common stock or pre-funded warrants or common warrants, the tax treatment of a partner generally will depend on the status of the partner, the activities of the partnership, and certain determinations made at the partner level. Accordingly, partnerships that hold our common stock or pre-funded warrants or common warrants, and partners in such partnerships, should consult their tax advisors regarding the U.S. federal income tax consequences to them of the purchase, ownership, and disposition of our common stock or pre-funded warrants or common warrants.

You are urged to consult your tax advisor with respect to the application of the U.S. federal income tax laws to your particular situation, as well as any tax consequences of the purchase, ownership and disposition of our common stock or pre-funded warrants or common warrants arising under the U.S. federal estate or gift tax rules or under the laws of any U.S. state or local or any non-U.S. or other taxing jurisdiction or under any applicable tax treaty.

Definition of a U.S. Holder

For purposes of this summary, a “U.S. Holder” is any beneficial owner of our common stock or pre-funded warrants or common warrants that is a “U.S. person,” and is not a partnership, or an entity treated as a partnership or disregarded from its owner, each for U.S. federal income tax purposes. A U.S. person is any person that, for U.S. federal income tax purposes, is or is treated as any of the following:

55

·an individual who is a citizen or resident of the United States;

·a corporation 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 U.S. federal income tax regardless of its source; or

·a trust that (1) is subject to the primary supervision of a U.S. court and the control of one or more U.S. persons (within the meaning of Section 7701(a)(30) of the Code), or (2) has a valid election in effect to be treated as a U.S. person for U.S. federal income tax purposes.

For purposes of this summary, a “Non-U.S. Holder” is any beneficial owner of our common stock or pre-funded warrants or common warrants that is not a U.S. Holder or a partnership, or other entity treated as a partnership or disregarded from its owner, each for U.S. federal income tax purposes.

Treatment of Pre-funded Warrants

Although it is not entirely free from doubt, a pre-funded warrant should be treated as a share of our common stock for U.S. federal income tax purposes and a holder of pre-funded warrants should generally be taxed in the same manner as a holder of common stock, as described below. Accordingly, no gain or loss should be recognized upon the exercise of a pre-funded warrant and, upon exercise, the holding period of a pre-funded warrant should carry over to the share of common stock received. Similarly, the tax basis of the pre-funded warrant should carry over to the share of common stock received upon exercise, increased by the exercise price of $0.01. Each holder should consult his, her or its own tax advisor regarding the risks associated with the acquisition of pre-funded warrants pursuant to this offering (including potential alternative characterizations). The balance of this discussion generally assumes that the characterization described above is respected for U.S. federal income tax purposes.

Tax Consequences to U.S. Holders

Distributions on Common Stock

As discussed above under “Dividend Information – Dividend Policy,” we do not currently expect to make distributions on our common stock. In the event that we do make distributions of cash or other property, distributions paid on common stock, other than certain pro rata distributions of common stock, will be treated as a dividend to the extent paid out of our current or accumulated earnings and profits and will be includible in income by the U.S. Holder and taxable as ordinary income when received. If a distribution exceeds our current and accumulated earnings and profits, the excess will be first treated as a tax-free return of the U.S. Holder’s investment, up to the U.S. Holder’s tax basis in the common stock. Any remaining excess will be treated as a capital gain. Subject to applicable limitations, dividends paid to certain non-corporate U.S. Holders may be eligible for taxation as “qualified dividend income” and therefore may be taxable at rates applicable to long-term capital gains. U.S. Holders should consult their tax advisers regarding the availability of the reduced tax rate on dividends in their particular circumstances. Dividends received by a corporate U.S. Holder will be eligible for the dividends-received deduction if the U.S. Holder meets certain holding period and other applicable requirements.

Constructive Dividends on Common Warrants

Under Section 305 of the Code, an adjustment to the number of shares of common stock that will be issued on the exercise of the common warrants, or an adjustment to the exercise price of the common warrants, may be treated as a constructive distribution to a U.S. Holder of the common warrants if, and to the extent that, such adjustment has the effect of increasing such U.S. Holder’s proportionate interest in our “earnings and profits” or assets, depending on the circumstances of such adjustment (for example, if such adjustment is to compensate for a distribution of cash or other property to our stockholders). Adjustments to the exercise price of a common warrant made pursuant to a bona fide reasonable adjustment formula that has the effect of preventing dilution of the interest of the holders of the warrants should generally not result in a constructive distribution. Any constructive distributions would generally be subject to the tax treatment described above under “Dividends on Common Stock”.

Sale or Other Disposition of Common Stock

For U.S. federal income tax purposes, gain or loss realized on the sale or other disposition of common stock will be capital gain or loss, and will be long-term capital gain or loss if the U.S. Holder held the common stock for more than one year. The amount of the gain or loss will equal the difference between the U.S. Holder’s tax basis in the common stock disposed of and the amount realized on the disposition. Long-term capital gains recognized by non-corporate U.S. Holders will be subject to reduced tax rates. The deductibility of capital losses is subject to limitations.

Sale or Other Disposition, Exercise or Expiration of Common Warrants

For U.S. federal income tax purposes, gain or loss realized on the sale or other disposition of a common warrant (other than by exercise) will be capital gain or loss and will be long-term capital gain or loss if the U.S. Holder held the warrant for more than one year at the time of the sale or other disposition. The amount of the gain or loss will equal the difference between the U.S. Holder’s tax basis in the common warrant disposed of and the amount realized on the disposition.

In general, a U.S. Holder will not be required to recognize income, gain or loss upon the exercise of a common warrant by payment of the exercise price, except to the extent of cash paid in lieu of a fractional share. A U.S. Holder’s tax basis in a share of common stock received upon exercise will be equal to the sum of (1) the U.S. Holder’s tax basis in the common warrant and (2) the exercise price of the common warrant. A U.S. Holder’s holding period in the stock received upon exercise will commence on the day or the day after such U.S. Holder exercises the common warrant. No discussion is provided herein regarding the U.S. federal income tax treatment on the exercise of a common warrant on a cashless basis, and U.S. Holders are urged to consult their tax advisors as to the exercise of a common warrant on a cashless basis.

If a common warrant expires without being exercised, a U.S. Holder will recognize a capital loss in an amount equal to such U.S. Holder’s tax basis in the common warrant. This loss will be long-term capital loss if, at the time of the expiration, the U.S. Holder’s holding period in the common warrant is more than one year. The deductibility of capital losses is subject to limitations.

Tax Consequences to Non-U.S. Holders

Distributions

As discussed in the section entitled “Dividend Information—Dividend Policy,” we do not anticipate paying any dividends on our common stock in the foreseeable future. If we make distributions on our common stock or on our common warrants (as described above under “Constructive Dividends on Common Warrants”), those payments will constitute dividends for U.S. federal income tax purposes to the extent we have current or accumulated earnings and profits, as determined under U.S. federal income tax principles. To the extent those distributions exceed both our current and our accumulated earnings and profits, they will constitute a return of capital and will first reduce a Non-U.S. Holder’s basis in our common stock or common warrants, as applicable, but not below zero. Any excess will be treated as capital gain and will be treated as described below under the “—Gain on Sale or Other Disposition of Common Stock or Common Warrants” section. Any such distributions would be subject to the discussions below regarding back-up withholding and Foreign Account Tax Compliance Act, or FATCA.

Subject to the discussion below on effectively connected income, any dividend paid to a Non-U.S. Holder generally will be subject to U.S. withholding tax either at a rate of 30% of the gross amount of the dividend or such lower rate as may be specified by an applicable income tax treaty. To receive a reduced treaty rate, a Non-U.S. Holder must provide us or our agent with an IRS Form W-8BEN, IRS Form W-8 BEN-E or another appropriate version of IRS Form W-8 (or a successor form), which must be updated periodically, and which, in each case, must certify qualification for the reduced rate. Non-U.S. Holders should consult their tax advisors regarding their entitlement to benefits under any applicable income tax treaty.

56

Dividends paid to a Non-U.S. Holder that are effectively connected with the Non-U.S. Holder’s conduct of a trade or business within the United States and that are not eligible for relief from U.S. (net basis) income tax under an applicable income tax treaty, generally are exempt from the (gross basis) withholding tax described above. To obtain this exemption from withholding tax, the Non-U.S. Holder must provide the applicable withholding agent with an IRS Form W-8ECI or successor form or other applicable IRS Form W-8 certifying that the dividends are effectively connected with the Non-U.S. Holder’s conduct of a trade or business within the United States. Such effectively connected dividends, if not eligible for relief under a tax treaty, would not be subject to a withholding tax, but would be taxed at the same graduated rates applicable to U.S. persons, net of certain deductions and credits and if, in addition, the Non-U.S. Holder is a corporation, may also be subject to a branch profits tax at a rate of 30% (or such lower rate as may be specified by an applicable income tax treaty).

If you are eligible for a reduced rate of withholding tax pursuant to a tax treaty, you may be able to obtain a refund of any excess amounts withheld if you timely file an appropriate claim for refund with the IRS.

Exercise or Expiration of Common Warrants

In general, a Non-U.S. Holder will not be required to recognize income, gain or loss upon the exercise of a common warrant by payment of the exercise price, except to the extent of cash paid in lieu of a fractional share. However, no discussion is provided herein regarding the U.S. federal income tax treatment on the exercise of a common warrant on a cashless basis, and Non-U.S. Holders are urged to consult their tax advisors as to the exercise of a common warrant on a cashless basis.

If a common warrant expires without being exercised, a Non-U.S. Holder that is engaged in a U.S. trade or business to which any income from the common warrant would be effectively connected or who is present in the United States for a period or periods aggregating 183 days or more during the calendar year in which the expiration occurs (and certain other conditions are met) will recognize a capital loss in an amount equal to such Non-U.S. Holder’s tax basis in the common warrant.

Gain on Sale or Other Disposition of Common Stock or Common Warrants

Subject to the discussion below regarding backup withholding and FATCA, a Non-U.S. Holder generally will not be required to pay U.S. federal income tax on any gain realized upon the sale or other disposition of our common stock or common warrants unless:

·the gain is effectively connected with the Non-U.S. Holder’s conduct of a trade or business within the United States and not eligible for relief under an applicable income tax treaty, in which case the Non-U.S. Holder will be required to pay tax on the net gain derived from the sale under regular graduated U.S. federal income tax rates, and for a Non-U.S. Holder that is a corporation, such Non-U.S. Holder may be subject to the branch profits tax at a 30% rate (or such lower rate as may be specified by an applicable income tax treaty) on such effectively connected gain, as adjusted for certain items;

·the Non-U.S. Holder is an individual who is present in the United States for a period or periods aggregating 183 days or more during the calendar year in which the sale or disposition occurs and certain other conditions are met, in which case the Non-U.S. Holder will be required to pay a flat 30% tax on the gain derived from the sale, which tax may be offset by U.S. source capital losses (even though the Non-U.S. Holder is not considered a resident of the United States) (subject to applicable income tax or other treaties); or

·

we are a “U.S. real property holding corporation” for U.S. federal income tax purposes, or a USRPHC, at any time within the shorter of the five-year period preceding the disposition or the Non-U.S. Holder’s holding period for our common stock or common warrants. We believe we are not currently and 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. Even if we become a USRPHC, however, gain arising from the sale or other taxable disposition by a Non-U.S. Holder of our common stock will not be subject to United States federal income tax if (A) in the case of our common stock, (a) shares of our common stock are “regularly traded,” as defined by applicable Treasury Regulations, on an established securities market, such as Nasdaq, and (b) the Non-U.S. Holder owns or owned, actually and constructively, 5% or less of the shares of our common stock throughout the five-year period ending on the date of the sale or exchange; and (B) in the case of our common warrants, either (a)(i) shares of our common stock are “regularly traded,” as defined by applicable Treasury Regulations, on an established securities market, such as Nasdaq, (ii) our common warrants are not considered regularly traded on an established securities market and (iii) the Non-U.S. Holder does not own, actually or constructively, common warrants with a fair market value greater than the fair market value of 5% of the shares of our common stock, determined as of the date that such Non-U.S. Holder acquired its common warrants, or (b)(i) our common warrants are considered regularly traded on an established securities market, and (ii) the Non-U.S. Holder owns or owned, actually and constructively, 5% or less of our common warrants throughout the five-year period ending on the date of the sale or exchange. Our common warrants are not expected to be regularly traded on an established securities market. If the foregoing exception does not apply, such Non-U.S. Holder’s proceeds received on the disposition of shares will generally be subject to withholding at a rate of 15% and such Non-U.S. Holder will generally be taxed on any gain in the same manner as gain that is effectively connected with the conduct of a U.S. trade or business, except that the branch profits tax generally will not apply.

Information Reporting and Backup Withholding

Information returns may be filed with the IRS in connection with distributions on common stock or constructive dividends on common warrants, and the proceeds of a sale or other disposition of common stock or common warrants. A non-exempt U.S. Holder may be subject to U.S. backup withholding on these payments if it fails to provide its taxpayer identification number to the withholding agent and comply with certification procedures or otherwise establish an exemption from backup withholding.

A Non-U.S. Holder may be subject to U.S. information reporting and backup withholding on these payments unless the Non-U.S. Holder complies with certification procedures to establish that it is not a U.S. person (within the meaning of the Code). The certification requirements generally will be satisfied if the Non-U.S. Holder provides the applicable withholding agent with a statement on the applicable IRS Form W-8BEN or IRS Form W-8BEN-E (or suitable substitute or successor form), together with all appropriate attachments, signed under penalties of perjury, stating, among other things, that such Non-U.S. Holder is not a U.S. Person. Applicable Treasury Regulations provide alternative methods for satisfying this requirement. In addition, the amount of distributions on common stock or constructive dividends on common stock paid to a Non-U.S. Holder, and the amount of any U.S. federal tax withheld therefrom, must be reported annually to the IRS and the holder. This information may be made available by the IRS under the provisions of an applicable tax treaty or agreement to the tax authorities of the country in which the Non-U.S. Holder resides.

57

Payment of the proceeds of the sale or other disposition of common stock or common warrants to or through a non-U.S. office of a U.S. broker or of a non-U.S. broker with certain specified U.S. connections generally will be subject to information reporting requirements, but not backup withholding, unless the Non-U.S. Holder certifies under penalties of perjury that it is not a U.S. person or an exemption otherwise applies. Payments of the proceeds of a sale or other disposition of common stock or common warrants to or through a U.S. office of a broker generally will be subject to information reporting and backup withholding, unless the Non-U.S. Holder certifies under penalties of perjury that it is not a U.S. person or otherwise establishes an exemption.

Backup withholding is not an additional tax. The amount of any backup withholding from a payment generally will be allowed as a credit against the holder’s U.S. federal income tax liability and may entitle the holder to a refund, provided that the required information is timely furnished to the IRS.

Foreign Account Tax Compliance Act

FATCA imposes withholding tax on certain types of payments made to foreign financial institutions and certain other non-U.S. entities. The legislation imposes a 30% withholding tax on dividends on, or, subject to the discussion of certain proposed Treasury Regulations below, gross proceeds from the sale or other disposition of, our common stock or common warrants paid to a “foreign financial institution” or to certain “non-financial foreign entities” (each as defined in the Code), unless (i) the foreign financial institution undertakes certain diligence and reporting obligations, (ii) the non-financial foreign entity either certifies it does not have any “substantial United States owners” (as defined in the Code) or furnishes identifying information regarding each substantial United States owner, or (iii) the foreign financial institution or non-financial foreign 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 (i) above, it must enter into an agreement with the U.S. Treasury requiring, among other things, that it undertake to identify accounts held by “specified United States persons” or “United States-owned foreign entities” (each as defined in the Code), annually report certain information about such accounts, and withhold 30% on payments to account holders whose actions prevent it from complying with these reporting and other requirements. If the country in which a payee is resident has entered into an “intergovernmental agreement” with the United States regarding FATCA, that agreement may permit the payee to report to that country rather than to the U.S. Department of the Treasury. The U.S. Treasury recently released proposed Treasury Regulations which, if finalized in their present form, would eliminate the federal withholding tax of 30% applicable to the gross proceeds of a sale or other disposition of our common stock. In its preamble to such proposed Treasury Regulations, the U.S. Treasury stated that taxpayers may generally rely on the proposed regulations until final regulations are issued. Prospective investors should consult their own tax advisors regarding the possible impact of these rules on their investment in our common stock or common warrants, and the possible impact of these rules on the entities through which they hold our common stock or common warrants, including, without limitation, the process and deadlines for meeting the applicable requirements to prevent the imposition of this 30% withholding tax under FATCA.

The preceding discussion of U.S. federal tax considerations is for general information only. It is not tax advice. Each prospective investor should consult its tax advisor regarding the particular U.S. federal, state and local and non-U.S. tax consequences of purchasing, holding and disposing of our common stock or common warrants, including the consequences of any proposed change in applicable laws.

58

UNDERWRITING

We and the underwriters named below have entered into an underwriting agreement with respect to the shares of common stock or pre-funded warrants and accompanying common warrants being offered. A.G.P./Alliance Global Partners, LLC is acting as the sole book-running manager and representative of the underwriters in this offering. In connection with this offering and subject to certain terms and conditions, the underwriters have agreed to purchase, and we have agreed to sell, all of the securities in this offering to the underwriters.

Underwriter  

Number of

shares

  

Number of

pre-funded warrants

 

Number of

Accompanying

Common

Warrants

 
A.G.P./Alliance Global Partners          
Maxim Group, LLC         
          
Total  

47,619,048

    47,619,048 

The underwriters have agreed to purchase all the securities offered by us other than those covered by the over-allotment option to purchase additional securities described below, if it purchases any such securities, and the underwriters’ obligations are several, which means that each underwriter is required to amend purchase a specific number of shares of common stock and/or repealpre-funded warrants and accompanying common warrants but is not responsible for the certificatecommitment of incorporation or the by-laws.


87


Delaware Business Combination Statute
Section 203any other underwriter to purchase any securities. The obligations of the Delaware General Corporation Lawunderwriters may be terminated upon the occurrence of certain events specified in the underwriting agreement. Furthermore, pursuant to the underwriting agreement, the underwriters’ obligations are subject to customary conditions and representations and warranties contained in the underwriting agreement, such as receipt by the underwriters of officers’ certificates and legal opinions.

The underwriters are offering the securities, subject to prior sale, when, as and if issued to and accepted by them, subject to approval of legal matters by the representative’s counsel and other conditions specified in the underwriting agreement. The underwriters reserve the right to withdraw, cancel or modify offers to the public and to reject orders in whole or in part.

Over-allotment Option

We have also granted the underwriters an option, exercisable for up to 45 days from the date of this prospectus, to purchase up to an additional 7,142,857 shares of common stock and/or common warrants, at the public offering price, less underwriting discounts and commissions. The underwriters may exercise the option solely to cover over-allotments. If the over-allotment option is exercised in full, the total public offering price, underwriting compensation (including discounts, but not including any other compensation described hereunder) and proceeds to us before offering expenses will be approximately $       million, $       million and $       million, respectively, and excluding the proceeds, if any, from the exercise of the pre-funded warrants and common warrants offered hereby.

Indemnification

We have agreed to indemnify the underwriters against certain liabilities, including liabilities under the Securities Act and liabilities arising from breaches of representations and warranties contained in the underwriting agreement, or to contribute to payments that the underwriters may be required to make in respect of those liabilities.

Underwriter Compensation

We have agreed to sell the securities to the underwriters at the combined offering price of $             per share of common stock (or per pre-funded warrant, as applicable) and accompanying common warrants, which represents the offering price of such securities set forth on the cover page of this prospectus, less the applicable 7% underwriting discount.

We have also agreed to pay a non-accountable expense allowance to the underwriter equal to $25,000. In addition, we have agreed to reimburse the underwriters for accountable legal expenses incurred by it in connection with this transaction in the amount of $90,000. The total expenses of the underwriter which are subject to payment or reimbursement by the company hereunder shall not exceed $115,000. We estimate that the total expenses of the offering payable by us, excluding the total underwriting discount, will be approximately $480,000.

Discount, Commissions and Expenses

The underwriters have advised us that they propose to offer the shares of common stock and accompanying warrants at the public offering price set forth on the cover page of this prospectus and to certain dealers at that price less a concession not in excess of $           per share of common stock and accompanying warrant. After this offering, the public offering price and concession to dealers may be changed by the representative. No such change shall change the amount of proceeds to be received by us as set forth on the cover page of this prospectus. The shares of common stock and accompanying warrants are offered by the underwriters as stated herein, subject to receipt and acceptance by them and subject to their right to reject any order in whole or in part. The underwriters have informed us that they do not intended to confirm sales to any accounts over which they exercise discretionary authority.

59

The following table summarizes the underwriting discount we will pay to the underwriters. These amounts are shown assuming both no exercise and full exercise of the over-allotment option.

Per Share and
Accompanying
Common Warrant

Per Pre-
Funded
Warrant and
Accompanying
Common Warrant

Total without
Over-
Allotment
Option
Total with
Over-
Allotment
Option
Public offering price$$$$
Total underwriting discount (7%)$$$$
Proceeds to us, before expenses (1)$$$$

(1) Excluding the proceeds, if any, from the exercise of the pre-funded warrants and common warrants.

Lock-Up Agreements and Trading Restrictions

Our executive officers and directors have agreed to a 90-day “lock-up” from the effective date of this prospectus of shares of common stock that they beneficially own, including the issuance of common stock upon the exercise of currently outstanding convertible securities and options and options which may be issued. This means that, for a period of 90 days following the effective date of this prospectus, such persons may not offer, sell, pledge or otherwise dispose of these securities without the prior written consent of the representative.

The representative has no present intention to waive or shorten the lock-up period; however, the terms of the lock-up agreements may be waived at its discretion. In determining whether to waive the terms of the lockup agreements, the representative may base its decision on its assessment of the relative strengths of the securities markets and companies similar to ours in general, and the trading pattern of, and demand for, our securities in general.

In addition, the underwriting agreement provides that we will not, for a period of 90 days following the effective date of this prospectus, offer, sell or distribute any of our securities, without the prior written consent of the representative, subject to exceptions set forth therein, an interested stockholdercertain exceptions.

Beginning on the closing date of a Delaware corporationthis offering and ending 45 days after such date (the “Leak-out Period”), certain investors who decide to purchase more than $1,000,000 of securities offered in this offering, if they decide to sell any securities during the Leak-out Period, may only be permitted to sell securities in such amount as shall notequal up to 35% in the aggregate of the average daily volume of the company’s common stock on any given trading day, as reported by The Nasdaq Stock Market.

Stabilization

The rules of the SEC generally prohibit the underwriters from trading in our securities on the open market during this offering. However, the underwriters are allowed to engage in any business combination, including mergerssome open market transactions and other activities during this offering that may cause the market price of our securities to be above or consolidations or acquisitions of additional shares ofbelow that which would otherwise prevail in the corporation, with the corporation for a three-year period following the date that such stockholder becomes an interested stockholder unless:

open market. These activities may include stabilization, short sales and over-allotments, syndicate covering transactions and penalty bids.

Stabilizing transactions consist of bids or purchases made by the representative for the purpose of preventing or slowing a decline in the market price of our securities while this offering is in progress.
  prior to such date, the board of directors of the corporation approved either the business combination or the transaction which resulted in the stockholder becoming an interested stockholder,
 
 • upon consummationShort sales and over-allotments occur when the representative sells more of our shares of common stock than it purchases from us in this offering. To cover the transaction which resultedresulting short position, the representative may exercise the over-allotment option described above or may engage in syndicate covering transactions. There is no contractual limit on the stockholder becoming an interested stockholder,size of any syndicate covering transaction. The representative will make available a prospectus in connection with any such short sales. Purchasers of shares sold short by the interested stockholder owned at least 85%representative are entitled to the same remedies under the federal securities laws as any other purchaser of shares covered by the voting stock of the corporation outstanding at the time the transaction commenced, other than statutorily excluded shares, orregistration statement.
 
 • Syndicate covering transactions are bids for or purchases of our securities on or subsequent to such date, the business combination is approvedopen market by the board of directors of the corporation and authorized at an annual or special meeting of the stockholders by the affirmative vote of at least 662/3% of the outstanding voting stock which is not owned by the interested stockholder.
Except as otherwise set forth in Section 203, an interested stockholder is defined to include:
representative in order to reduce a short position.
  any person that is the owner of 15% or more of the outstanding voting stock of the corporation, or is an affiliate or associate of the corporation and was the owner of 15% or more of the outstanding voting stock of the corporation at any time within three years immediately prior to the date of determination, and
 
 • Penalty bids permit the affiliates and associatesrepresentative to reclaim a selling concession from a syndicate member when the shares of any such person.common stock originally sold by the syndicate member are purchased in a syndicate covering transaction to cover syndicate short positions.
Section 203

If the underwriters commence these activities, they may make it more difficult for a person who would be an interested stockholder to affect various business combinations with a corporation for a three-year period. We have not elected to be exempt from the restrictions imposed under Section 203.discontinue them at any time without notice. The provisions of Section 203 may encourage persons interested in acquiring us to negotiate in advance with our board, since the stockholder approval requirement would be avoided if a majority of the directors then in office approves either the business combination or the transaction which results inunderwriters will carry out any such person becoming an interested stockholder. Such provisions also may have the effect of preventing changes in our management. It is possible that such provisions could make it more difficult to accomplish transactions which our stockholders may otherwise deem to be in their best interests.on The Nasdaq Capital Market.

60

Transfer Agent and Registrar
Computershare Investor Services is the transfer agent and registrar for the shares of our common stock.
Stock Exchange

Listing

Our common stock is listed on the NASDAQThe Nasdaq Capital Market under the symbol “RXII.“SLS.


88


Electronic Distribution

SHARES ELIGIBLE FOR FUTURE SALE
We

A prospectus in electronic format may be made available on websites or through other online services maintained by the underwriters of this offering, or by their affiliates. Other than the prospectus in electronic format, the information on any underwriters’ website and any information contained in any other website maintained by an underwriter is not part of this prospectus or the registration statement of which this prospectus forms a part, has not been approved and/or endorsed by us or the representative in its capacity as an underwriter.

Other Relationships

The representative and its affiliates have outstanding an aggregateengaged in, and may in the future engage in, investment banking and other commercial dealings in the ordinary course of 13,757,731 sharesbusiness with us or our affiliates. They have received, or may in the future receive, customary fees and commissions for these transactions. In the course of our common stock. Of these shares, approximately 12,684,432 are freely tradable without restriction or further registration underits businesses, the Securities Act unless the shares are owned by our “affiliates” or are “restricted shares” as such terms are defined in Rule 144 under the Securities Act. Under the Securities Act, an “affiliate” of a company is a person who directly or indirectly controls, is controlled by or is under common control with that company. Suchrepresentative and its affiliates may includeactively trade our directors, executive officerssecurities or loans for its own account or for the accounts of customers, and, principal stockholders. CytRx owns 6,268,881 shares of our common stock, which are “restricted shares” withinaccordingly, the meaning of Rule 144 under the Securities Act. Any shares held by “affiliates”representative and any “restricted shares”its affiliates may be sold in the public market only if registered or if they qualify for an exemption from registration under Rule 144, which is summarized below. Additionally, the 1,103,299 shares to be sold in this offering will be freely tradable by persons other than our affiliates, as that term is defined in Rule 144 under the Securities Act, without restriction or further registration under the Securities Act.

Rule 144
In general, under Rule 144 as currently in effect, a person (or persons whose shares are aggregated) who is deemed to be an affiliate of ours at the time of sale, or at any time hold long or short positions in such securities or loans.

Except for services provided in connection with this offering, and except as set forth in this section, the representative has not provided any investment banking or other financial services during the 180-day period preceding three months,the date of this prospectus and who has beneficially owned restricted shareswe do not expect to retain the representative to perform any investment banking or other financial services for at least six months, would be entitled90 days after the date of this prospectus.

Notice to sell within any three-month period a number of shares that does not exceedInvestors in the greater of 1%United Kingdom

In relation to each Member State of the then outstanding shares (137,577 shares at present) orEuropean Economic Area which has implemented the average weekly trading volumeProspectus Directive (each, a “Relevant Member State”) an offer to the public of shares duringany securities which are the four calendar weeks precedingsubject of the offering contemplated by this prospectus may not be made in that Relevant Member State except that an offer to the public in that Relevant Member State of any such sale. Sales under Rule 144 are subject to certain manner of sale provisions, notice requirements and the availability of current public information about us. A person who has not been our affiliatesecurities may be made at any time duringunder the three months preceding a sale, and who has beneficially owned his shares for at least six months, would be entitledfollowing exemptions under Rule 144 to sell such shares without regard to any mannerthe Prospectus Directive, if they have been implemented in that Relevant Member State:

(a)to legal entities which are 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;
(b)to any legal entity which 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;
(c)by the underwriter to fewer than 100 natural or legal persons (other than qualified investors as defined in the Prospectus Directive); or
(d)in any other circumstances falling within Article 3(2) of the Prospectus Directive, provided that no such offer of these securities shall result in a requirement for the publication by the issuer or the underwriter of a prospectus pursuant to Article 3 of the Prospectus Directive.

For the purposes of sale, notice provisions or volume limitations described above. Any such sales must comply withthis provision, the public information provision of Rule 144 until our common stock has been held for one year.

Registration Rights
We have agreed that, upon request by CytRx, we will use our best efforts to cause all of our shares issued to CytRx pursuantexpression an “offer to the two contribution agreements we entered intopublic” in relation to our initial capitalizationany of the securities 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 any such securities to be registered underoffered so as to enable an investor to decide to purchase any such securities, as the Securitiessame 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.

61

The representative has represented, warranted and agreed that:

(a)it has only communicated or caused to be communicated and will only communicate or cause to be communicated any invitation or inducement to engage in investment activity (within the meaning of section 21 of the Financial Services and Markets Act 2000 (the FSMA)) received by it in connection with the issue or sale of any of the securities in circumstances in which section 21(1) of the FSMA does not apply to the issuer; and
(b)it has complied with and will comply with all applicable provisions of the FSMA with respect to anything done by it in relation to the securities in, from or otherwise involving the United Kingdom.

European Economic Area

In particular, this document does not constitute an approved prospectus in accordance with certain exceptions, with all expenses incurredEuropean Commission’s Regulation on Prospectuses no. 809/2004 and no such prospectus is to be prepared and approved in connection with this offering. Accordingly, in relation to each Member State of the European Economic Area which has implemented the Prospectus Directive (being the Directive of the European Parliament and of the Council 2003/71/EC and including any such registration willrelevant implementing measure in each Relevant Member State) (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 to the public may not be borne by us. We also have granted CytRx what are commonly known as “piggyback” registration rightsmade in that Relevant Member State prior to include our shares currently owned by CytRx, or owned by CytRx in the future as a resultpublication of a dividendprospectus in relation to such securities which has been approved by the competent authority in that Relevant Member State or, distribution with respectwhere appropriate, approved in another Relevant Member State and notified to shares currently owned by CytRx,the competent authority in other registration statements that we may fileRelevant Member State, all in accordance with the SECProspectus Directive, except that it may, with effect from and including the Relevant Implementation Date, make an offer of securities to the public in that Relevant Member State at any time:

to legal entities which are 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 which 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 the last annual or consolidated accounts; or
in any other circumstances which do not require the publication by the Issuer of a prospectus pursuant to Article 3 of the Prospectus Directive.

For the purposes of this provision, the expression an “offer of securities to the public” in relation to any of the securities in any Relevant Member State means the communication in any form and by any means of sufficient information on behalfthe terms of our companythe offer and the securities to be offered so as to enable an investor to decide to purchase or our security holders.

Employee Stock Options
We filed a registration statement onForm S-8 undersubscribe for the Securities Act to register up to 2,750,000 shares of common stocksecurities, as the same may be varied in that are issuable under our 2007 Incentive Plan. Shares issued uponMember State by any measure implementing the exercise of options after the effective date of such registration statement, other than shares issued to affiliates, generally will be freely tradable without further registration under the Securities Act. On July 18, 2008 our stockholders approved an amendment to our 2007 incentive plan to increaseProspectus Directive in that Member State. For these purposes the shares of common stock thatoffered hereby are issuable to 3,750,000.“securities.”

62


89


LEGAL MATTERS
Ropes & Gray LLP, Boston, Massachusetts, will pass upon the

The validity of the common stocksecurities offered hereby is being passed upon for us by Mintz, Levin, Cohn, Ferris, Glovsky & Popeo, P.C., New York, New York. Cooley LLP, New York, New York, is acting as counsel for the underwriters in connection with this prospectus.

offering.

EXPERTS
The predecessor

Our consolidated financial statements of RXi Pharmaceuticals Corporation as of December 31, 2006 and 2005 and for each of the yearsappearing in the period then ended and the balance sheets as of December 31, 2007 and 2006 and the statement of expensesour Annual Report on Form 10-K for the year ended December 31, 2007 and statement of stockholders’ equity for the period from April 3, 2006 (date of incorporation) to December 31, 2007 of RXi Pharmaceuticals Corporation, the successor entity, included in this prospectus and in the Registration Statement2018, have been so included in reliance on the report of BDO Seidman,audited by Moss Adams LLP, an independent registered public accounting firm, appearing elsewhereas stated in their report, which is incorporated herein andby reference. Such consolidated financial statements have been so incorporated in reliance upon the Registration Statement, given on the authorityreport of such firm (which report expresses an unqualified opinion and includes an explanatory paragraph regarding the company’s going concern uncertainty) given upon their authority as experts in auditing and accounting.

WHERE YOU CAN FIND MORE INFORMATION

We are a reporting company and file annual, quarterly and current reports, proxy statements and other information with the SEC. We have filed with the SEC a registration statement onForm S-1 under the Securities Act with respect to the SEC to register the sharesoffer and sale of RXi common stock covered byour securities under this prospectus. This prospectus does not contain all of the information set forth in the registration statement and the exhibits and schedules thereto, as some items are omitted in accordance withto the rules and regulations of the SEC.registration statement. For further information aboutwith respect to us and RXi common stock,the securities offered under this prospectus, we refer you to the registration statement onForm S-1. Statements contained in this prospectus as toand the contents of any contract, agreement or other document referred to are not necessarily complete, and in each instance reference is made to the copy of each contract, agreement or other documentexhibits filed as an exhibit toa part of the registration statement, each statement being qualified by this reference.

We are required to complystatement. The SEC also maintains an Internet site that contains reports, proxy and information statements and other information regarding issuers that file electronically with the reporting requirements of the Exchange Act, and file annual, quarterly and other reports with the SEC. We are also subject to the proxy solicitation requirements of the Exchange Act. We make available free of charge on our website our annual reports onForm 10-K, quarterly reports onForm 10-Q and current reports onForm 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC.
You may read and copy all or any portion of such reports, statements or other information we filedSEC, including SELLAS Life Sciences Group, Inc. The SEC’s Internet site can be found at the SEC’s public reference room at 100 F Street, NE, Washington, DC 20549. You can request copies of these documents upon payment of a duplicating fee, by writing to the SEC. Please call the SEC at1-800-SEC-0330 for further information on the operation of the public reference rooms. Our SEC filings, including the registration statement, will also be available to you on the SEC’s website(http://www.sec.gov). In addition, you may request a copy of these filings (excluding exhibits) at no cost by writing or telephoning us at the following address or telephone number:
RXi Pharmaceuticals Corporation
Investor Relations
60 Prescott Street
Worcester, Massachusetts 01605
Telephone:(508) 767-3861
www.sec.gov. We maintain a website at www.rxipharma.com. Ourwww.sellaslife.com. Information found on, or accessible through, our website and the information contained on that site, or connected to that site, is not a part of, orand is not incorporated by reference into, this prospectus.
No person is authorized to give any information or to make any representations other than those contained in this prospectus, and if given or made, such information or representations mustyou should not be relied upon as having been authorized. Neither the deliveryconsider it part of this prospectus nor any distribution of securities made hereunder shall imply that there has been no change in the information set forth herein or in our affairs since the date hereof.


90

prospectus.


INCORPORATION OF DOCUMENTS BY REFERENCE

The SEC allows us to “incorporateincorporate by reference” much ofreference the information we file with it, which means that we can disclose important information to you by referring you to those publicly available documents. Theanother document that we have filed separately with the SEC. You should read the information incorporated by reference because it is an important part of this prospectus. Information in this prospectus supersedes information incorporated by reference that we filed with the SEC prior to the date of this prospectus, while information that we incorporate by reference is considered to be part of this prospectus, and any of our subsequent filingsfile later with the SEC will automatically update and supersede the information in this information. This prospectus incorporatesprospectus. We incorporate by reference into this prospectus and the registration statement of which this prospectus is a part the information or documents listed below that we have filed with the SEC (Commission File No. 001-33958):

·our definitive proxy statement on Schedule 14A filed with the SEC on May 24, 2019;

·our Annual Report on Form 10-K for the year ended December 31, 2018, filed with the SEC on March 22, 2019, asamended on April 30, 2019;

·our Quarterly Report on Form 10-Q for the three months ended March 31, 2019, filed with the SEC on May 15, 2019;

·our Current Reports on Form 8-K, filed with the SEC on January 7, 2019,February 26, 2019,March 6, 2019,andMay 31, 2019; and

·the description of our common stock set forth in our registration statement on Form 8-A, filed with the SEC on February 8, 2008, as amended onFebruary 12, 2008, including any further amendments thereto or reports filed for the purposes of updating this description.

We also incorporate by reference any future filings (other than current reports furnished under Item 2.02 or Item 7.01 of Form 8-K and exhibits filed on such form that are related to such items unless such Form 8-K expressly provides to the contrary) made by us with the SEC under Sectionpursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act, untilincluding those made after the date of the initial filing of the registration statement of which this prospectus is a part and prior to effectiveness of such registration statement, until we file a post-effective amendment tothat indicates the termination of the offering of the common stock made by this prospectus which indicatesand will become a part of this prospectus from the date that all securities registered have been soldsuch documents are filed with the SEC. Information in such future filings updates and supplements the information provided in this prospectus. Any statements in any such future filings will automatically be deemed to modify and supersede any information in any document we previously filed with the SEC that is incorporated or which deregisters all securities then remaining unsold:

deemed to be incorporated herein by reference to the extent that statements in the later filed document modify or replace such earlier statements.

 • 63our annual report onForm 10-K for the fiscal year ended December 31, 2007, filed on April 15, 2008;

• our quarterly report onForm 10-Q for the fiscal quarter ended March 31, 2008 filed with the SEC on May 15, 2008;
• our current reports onForm 8-K filed with the SEC on May 20, 2008, June 26, 2008 and July 24, 2008;
• the description of our common stock contained in the registration statement onForm 8-A filed pursuant to Section 12 of the Exchange Act on February 8, 2008, as amended on February 12, 2008, and including any additional amendments or reports filed for the purpose of updating such description; and
• any future filings we will make with the SEC pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act until this offering is complete or terminated, other than information furnished pursuant to Item 2.02 or Item 7.01 ofForm 8-K.
You may

We will furnish without charge to each person, including any beneficial owner, to whom a prospectus is delivered, upon written or oral request, a copy of any or all of these filings, at no cost,the documents incorporated by writing or telephoning us at: RXi Pharmaceuticals Corporation, 60 Prescottreference into this prospectus but not delivered with the prospectus, including exhibits that are specifically incorporated by reference into such documents. You should direct any requests for documents to SELLAS Life Sciences Group, Inc., Attention: Corporate Secretary, 15 West 38th Street, Worcester, Massachusetts, 01605,(508) 767-3861, attention: Investor Relations.

10th Floor, New York, New York 10018. Our phone number is (917) 438-4353.

You should rely only on the information contained in, or incorporated by reference or provided ininto, this prospectus orand any prospectus supplement. We have not authorized anyone else to provide you with information different information. You should not assumefrom that informationcontained in this prospectus or incorporated by reference into this prospectus. We are not making offers to sell the securities in any supplementjurisdiction in which such an offer or solicitation is accurate as of any date other thannot authorized or in which the date on the front of these documents.


91

person making such offer or solicitation is not qualified to do so or to anyone to whom it is unlawful to make such offer or solicitation.



 

47,619,048 Shares of Common Stock

Pre-Funded Warrants to Purchase Shares of Common Stock

Common Warrants to Purchase up to 47,619,048 Shares of Common Stock

 

PROSPECTUS

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
 

Sole Book-Running Manager

A.G.P.

Co-Manager

Maxim Group, LLC

, 2019

Board of Directors and Stockholders
RXi Pharmaceuticals Corporation
Worcester, Massachusetts
 

We have audited the accompanying statements of assets, liabilities and parent company’s net deficit of the predecessor carve-out entity to RXi Pharmaceuticals Corporation (the ‘Company’), a development stage company, as of December 31, 2006, and the related statements of expenses, parent company’s net deficit, and cash flows for each of the two years in the period ended December 31, 2006 and the statements of expenses, parent company’s net deficit and cash flows for the period from January 1, 2003 (date of inception) to December 31, 2006, and the balance sheets of the successor entity, RXi Pharmaceuticals Corporation, as of December 31, 2007 and 2006 and the related statements of expenses, stockholders’ equity and cash flows for the year ended December 31, 2007. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.
65
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration 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 also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing 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.
In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of the predecessor carve-out entity to RXi Pharmaceuticals Corporation at December 31, 2006 and the results of the predecessor carve-out entity to RXi Pharmaceuticals Corporation’s operations and cash flows for each of the two years in the period ended December 31, 2006 and for the period from January 1, 2003 (date of inception) to December 31, 2006, and the financial position of RXi Pharmaceuticals Corporation as of December 31, 2007 and 2006 and the results of the Company’s operations and cash flows for the year ended December 31, 2007, in conformity with accounting principles generally accepted in the United States of America.
As more fully described in Note 2 to the financial statements, effective January 1, 2006, the Company adopted Statement of Financial Accounting Standard No. 123 (revised 2004),Share-based Payment.
/s/  BDO Seidman, LLP
Los Angeles, California
April 15, 2008


F-2


PART II

RXi PHARMACEUTICALS CORPORATION
AS OF MARCH 31, 2008, DECEMBER 31, 2007 AND 2006
AND
STATEMENT OF ASSETS, LIABILITIES AND PARENT COMPANY’S NET DEFICIT
AS OF DECEMBER 31, 2006
(A Development Stage Company)
(Amounts in thousands, except per share data)
                  
  As of
    
  March 31,  As of December 31, 
  2008  2007  2006   2006 
  (Successor)
  (Successor)   (Predecessor) 
  (Unaudited)        
ASSETS
Current assets:                 
Cash and cash equivalents $9,857  $1,763  $2   $ 
Short term investments, at amortized cost     9,952        
Prepaid expenses  322   22       7 
                  
Total current assets  10,179   11,737   2    7 
                  
Equipment and furnishings, net  364   344        
Deposits  37   66       50 
                  
Total assets $10,580  $12,147  $2   $57 
                  
Current liabilities:                 
Accounts payable $240  $55  $   $134 
Accrued expense and other current liabilities  1,467   1,062        191 
Due to parent  67   207        
                  
Total current liabilities  1,774   1,324       325 
                  
Commitments and contingencies (Note 1,9 and 12)                 
Stockholders’ equity:                 
Common stock, $0.0001 par value; 50,000,000 shares authorized; 12,684,432, 12,684,432 and 1,624,278 shares issued and outstanding at March 31, 2008, December 31, 2007 and 2006, respectively  1   1        
Additional paid-in capital  22,441   21,812   2     
Deficit accumulated during the developmental stage  (13,636)  (10,990)       
                  
Total stockholders’ equity  8,806   10,823   2     
                  
Parent company’s net deficit            (268)
                  
Total liabilities, stockholders’ equity and parent company’s net deficit $10,580  $12,147  $2   $57 
                  
The accompanying notes are an integral part of the financial statements.


F-3

INFORMATION NOT REQUIRED IN PROSPECTUS


RXi PHARMACEUTICALS CORPORATION
(A Development Stage Company)
(Amounts in thousands, except per share data)
                              
  Period from
            Period from
       
  January 1,
  Three
  Three
      January 1,
       
  2003 (Date of
  Months
  Months
      2003 (Date of
       
  Inception) to
  Ended
  Ended
  Year Ended
   Inception) to
  Years Ended
 
  March 31,
  March 31,
  March 31,
  December 31,
   December 31,
  December 31, 
  2008  2008  2007  2007   2006  2006  2005 
  (Successor)
  (Successor)
  (Successor)
  (Successor)   (Predecessor)  (Predecessor)    
  (Unaudited)  (Unaudited)  (Unaudited)              
Expenses:                             
Research and development expense $9,686  $882  $543  $3,273   $5,531  $1,298  $1,929 
Common stock and stock options issued for research and development expense  160   40      120           
Research and development non-employee share-based compensation expense  2,576   166   281   1,043    1,367   212   151 
Fair value of common stock issued in exchange for licensing rights  3,954         2,311    1,643   262    
                              
Total research and development expense  16,376   1,088   824   6,747    8,541   1,772   2,080 
                              
General and administrative expense  6,462   1,202   588   3,735    1,500   633   129 
General and administrative employee share-based compensation expense  1,354   423      931           
                              
Total general and administrative expense  7,816   1,625   588   4,666    1,500   633   129 
                              
Operating loss  (24,192)  (2,713)  (1,412)  (11,413)   (10,041)  (2,405)  (2,209)
Interest income  523   75      448           
Other expense  (8)  (8)                
                              
Loss before income taxes  (23,677)  (2,646)  (1,412)  (10,965)   (10,041)  (2,405)  (2,209)
Provision for income taxes           (25)          
                              
Net loss $(23,677) $(2,646) $(1,412) $(10,990)  $(10,041) $(2,405) $(2,209)
                              
Net loss per common share:                             
Basic and diluted loss per share     $(0.21) $(0.17) $(0.99)             
                              
Weighted average common shares outstanding: basic and diluted      12,684,432   8,117,016   11,113,137              
                              
                              
The accompanying notes are an integral part of these financial statements.


F-4


RXi PHARMACEUTICALS CORPORATION
FOR THE PERIOD FROM APRIL 3, 2006 TO MARCH 31, 2008
AND
PARENT COMPANY’S NET DEFICIT
FOR THE PERIOD FROM DECEMBER 31, 2003 TO DECEMBER 31, 2006
(A Development Stage Company)
(Amounts in thousands, except per share data)
                         
           Deficit
       
           Accumulated
       
  Common Stock  Additional
  During
  Parent
    
  Shares
     Paid-in
  Development
  Company’s
    
  Issued  Amount  Capital  Stage  Net Deficit  Total 
 
Predecessor
                        
Balance at December 31, 2003    $  $      $(89) $(89)
Net loss               (3,272)  (3,272)
Net transactions with Parent               2,393   2,393 
                         
Balance at December 31, 2004               (968)  (968)
Net loss               (2,209)  (2,209)
Net transactions with Parent               2,727   2,727 
                         
Balance at December 31, 2005               (450)  (450)
Net Loss               (2,405)  (2,405)
Net transactions with Parent               2,587   2,587 
                         
Balance at December 31, 2006    $  $      $(268) $(268)
                         
Successor
                        
Balance at April 3, 2006    $  $  $      $ 
Issuance of common stock  1,624,278      2          2 
                         
Balance at December 31, 2006  1,624,278      2          2 
Common stock issued to CytRx for contribution of RXi and other assets  7,040,318   1   47          48 
Common stock issued for cash  3,273,292      15,348          15,348 
Common stock issued to CytRx for reimbursement of expenses  188,387      978          978 
Expenses incurred by CytRx for RXi        831          831 
Common stock issued to UMMS for additional intellectual properties  462,112      2,311          2,311 
Common stock issued to directors  30,000      150          150 
Common stock issued upon exercise of stock options  66,045      331          331 
Share based compensation for directors and employees        1,048          1,048 
Share based compensation expense for services        766          766 
Net loss           (10,990)      (10,990)
                         
Balance at December 31, 2007  12,684,432   1   21,812   (10,990)      10,823 
Share based compensation for directors and employees (unaudited)        463          463 
Share based compensation for non-employees services (unaudited)        166          166 
Net loss(unaudited)           (2,646)      (2,646)
                         
Balance at March 31, 2008 (Unaudited)  12,684,432  $1  $22,441  $(13,636)     $8,806 
                         
The accompanying notes are an integral part of these financial statements.


F-5


RXi PHARMACEUTICALS CORPORATION
STATEMENTS OF CASH FLOWS
(A Development Stage Company)
(Amounts in thousands)
                              
  Period from
            Period from
       
  January 1,
            January 1,
       
  2003 (Date of
  Three
  Three
      2003 (Date of
       
  Inception)
  Months
  Months
      Inception)
       
  Through
  Ended
  Ended
  Year Ended
   Through
       
  March 31,
  March 31,
  March 31,
  December 31,
   December 31,
  Year Ended December 31, 
  2008  2008  2007  2007   2006  2006  2005 
  (Successor)
  (Successor)
  (Successor)
  (Successor)   (Predecessor)  (Predecessor)  (Predecessor) 
  (Unaudited)  (Unaudited)  (Unaudited)              
Cash flows from operating activities:
                             
Net loss: $(23,677) $(2,646) $(1,412) $(10,990)  $(10,041) $(2,405) $(2,209)
                              
Adjustment to reconcile net loss to net cash used in operating activities:                             
Depreciation expense  65   29   6   36           
Loss on disposal of equipment  8   8                   
Non-cash rent expense  29   29                   
Accretion and settlement of bond discount     172      (172)             
Non-cash share based compensation  4,092   629      2,094    1,369   212   151 
Fair value of common stock issued in exchange for licensing rights  3,954         2,311    1,643   262    
Changes in assets and liabilities:                             
Prepaid expenses  (322)  (300)  (26)  (15)   (7)  (7)   
Accounts payable  240   185   (33)  (79)   134   (232)  (421)
Due to parent  (138)  (140)     (79)   134   (232)  (421)
Accrued expenses and other current liabilities  1,325   366   401   768    191   58   (47)
                              
Total adjustments  9,251   978   348   4,943    3,330   293   (317)
                              
Net cash used in operating activities
  (14,424)  (1,668)  (1,064)  (6,047)   (6,711)  (2,112)  (2,526)
                              
Cash flows from investing activities:                             
Purchase of short term investments  (11,757)        (11,757)          
Maturities of short-term investments  11,757   9,780      1,977           
Cash paid for purchase of equipment and furnishings  (247)  (18)  (1)  (229)          
Cash paid for lease deposit  (66)        (16)   (50)     (50)
                              
Net cash used in investing activities
  (313)  9,762   (1)  (10,025)   (50)     (50)
                              
Cash flows from financing activities:                             
Net proceeds from issuance of common stock  15,498         15,498           
Net proceeds from exercise of common stock options  330         330           
Cash advances from Parent, net  8,766      1,065   2,005    6,761   2,112   2,576 
                              
Net cash provided by financing activities
  24,594      1,065   17,833    6,761   2,112   2,576 
                              
Net increase in cash and cash equivalents  9,857   8,094      1,761           
Cash and cash equivalents at the beginning of period     1,763   3   2           
                              
Cash and cash equivalents at end of period $9,857  $9,857  $3  $1,763   $  $  $ 
                              
Supplemental disclosure of cash flow information:
                             
Cash received during the period for interest $521   247  $  $274   $  $  $ 
                              
Supplemental disclosure of non-cash investing and financing activities:
                             
Settlement of corporate formation expenses in exchange for common stock $978  $  $281  $978   $  $  $ 
                              
Allocation of management expenses $551  $  $  $551   $  $  $ 
                              
Equipment and furnishings exchanged for common stock $48  $  $48  $48   $  $  $ 
                              
Acquisition of equipment and furnishings through accrued liabilities $142  $39  $4  $103   $  $  $ 
                              
Non-cash lease deposit $50  $  $  $50   $  $  $—  
                              


F-6


RXi PHARMACEUTICALS CORPORATION
(A Development Stage Company)
1.  Item 13.NatureOther Expenses of Business
RXi Pharmaceuticals Corporation (“RXi”, the “Company” or the “Successor”) was formed by CytRx Corporation (“CytRx” or the “Parent”) and four prominent RNAi researchers, including Craig C. Mello, Ph.D., who was awarded the 2006 Nobel Prize in Medicine for his co-discovery of RNAi. The purpose of forming RXi was to act as a discovery-stage biopharmaceutical company pursuing the development of proprietary therapeutics based on RNAi for the treatment of human diseases, including certain neurodegenerative diseases, metabolic diseases and oncology. By utilizing our expertise in RNAi and the RNAi technology platform we have licensed from prominent researchers, we believe we will be able to efficiently identify lead compounds and advance towards clinical development of commercially marketable compounds. Subsequent to the formation of RXi in 2006 and until the contribution in early 2007 of various RNAi therapeutic intellectual properties and equipment and furnishings by CytRx, RXi was an inactive company with limited transactions.
In 2003, CytRx entered into several technology license agreements with University of Massachusetts Medical School, or UMMS, related to RNAi technologies. CytRx subsequently entered into other RNAi-related technology agreements. Three of these sponsored research agreements were with UMMS and one of the sponsored research agreements was with Massachusetts General Hospital. As more fully described below, these assets were contributed to RXi in the first quarter of 2007.
RXi was incorporated as Argonaut Pharmaceuticals, Inc., in Delaware, on April 3, 2006 by CytRx and our four scientific founders, and we changed our name to RXi Pharmaceuticals Corporation on November 28, 2006. From April 3, 2006 (date of incorporation) until January 8, 2007, no business was conducted at the RXi level. On January 8, 2007, RXi entered into a contribution agreement with CytRx under which CytRx assigned and contributed to RXi substantially all of its RNAi-related technologies and assets and we commenced operations in February 2007; these contributed assets were recorded by RXi at the historical cost basis of $48,000.
On June 19, 2007, the Company effected a 1,781.006-for-1 stock split of our outstanding common stock. All share data, unless otherwise indicated, give retroactive effect to this stock split.
Because the RNAi activities prior to 2007 were conducted by CytRx, the financial statements of RXi for the periods through December 31, 2006, have been disaggregated, or “carved-out,” of the financial statements of CytRx. These carved-out financial statements form what we refer to herein as the financial statements of the “Predecessor,” and include both direct and indirect expenses. The historical direct expenses consist primarily of the various costs for technology license agreements, sponsored research agreements and fees paid to scientific advisors. Indirect expenses represent expenses incurred by CytRx on behalf of RXi; that have been allocated to RXi. The indirect expenses are based upon (1) estimates of the percentage of time spent by individual CytRx employees working on RXi matters, and (2) allocations of various expenses associated with each employee including salary, benefits, rent associated with an employee’s office space, accounting and other general and administrative expenses. The percentage of time spent by individual CytRx employees is then multiplied by the allocation of various expenses associated with those employees to develop an allocation of expense per employee and the sum of such relocations for these employees equals the total expense allocation for the year. RXi’s financial information from and after January 8, 2007 is referred to in these financial statements as the financial information of the “Successor” and includes expenses incurred by RXi in its RNAi therapeutic programs, as well as an allocation of corporate services provided by CytRx. In addition, the net intercompany activities between Predecessor and CytRx have been accumulated into a single caption entitled “Parent Company’s Net Deficit.”
Management believes the assumptions underlying the allocations of indirect expenses in the carve-out financial information are reasonable; however, RXi’s financial position, results of operations and cash flows


F-7


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
may have been materially different if it was operated as a stand-alone entity as of and for the periods presented.
To date, RXi’s principal activities have consisted of acquiring RNAi-related assets, securing exclusive and non-exclusive rights to develop RNAi therapeutics by licensing key RNAi technologies and patent rights, developing research and clinical development plans for our RNAi therapeutic platform, assessing and negotiating licenses to additional therapeutic RNAi technology, recruiting a RNAi-focused management and scientific/clinical advisory team and completing our organizational activities.
The Company is a development-stage biopharmaceutical company and we have not generated any revenues since inception through March 31, 2008, nor do we expect to generate any revenues in the foreseeable future. Accordingly, for accounting purposes we are considered a development stage company. We believe, with the $15.0 million equity (net of $2.0 million of expense reimbursement) investment that CytRx made on April 30, 2007, that we have adequate capital, in the form of cash on hand and short-term investments, to support our currently planned level of operations through the second half of 2009. In the future, we will be dependent on obtaining financing from third parties in order to maintain our operations and to meet our obligations to UMMS and other licensors. We currently have no commitments from any third parties to provide us with capital or additional funding. We cannot assure that additional debt or equity or other funding will be available to us on acceptable terms, or at all. If we fail to obtain additional funding when needed, we would be forced to scale back, or terminate, our operations, or to seek to merge with or to be acquired by another company. We expect to incur significant and increasing operating losses for the foreseeable future as we advance our product candidates from discovery through pre-clinical studies and clinical trials and seek regulatory approval and potential commercialization. In addition to these increasing research and development expenses, we expect general and administrative costs to increase as we add personnel and begin to operate as a public company. We will need to generate significant revenues to achieve profitability and may never do so.
2.  Summary of Significant Accounting Policies
A summary of significant accounting polices is as follows:
Basis of Presentation — For the two year period ended December 31, 2006, and the period from January 1, 2003 (date of inception) to December 31, 2006, the Predecessor financial statements consist of various transactions of CytRx Corporation which were identified as direct expenses related to RNAi therapeutics and disaggregated (“carved-out”) from CytRx’s financial statements. In addition, various indirect costs related to RNAi therapeutics (mainly senior management and accounting) were estimated and included as part of the Predecessor carved-out financial statements. For the period from April 3, 2006 (date of incorporation) through December 31, 2007, RXi was operating as a subsidiary of CytRx. The Successor financial statements as of December 31, 2006 and 2007 and for the three month periods ended March 31, 2008 and 2007 and the period from April 3, 2006 (date of incorporation) to March 31, 2008 were compiled from RXi’s books and records as well as an allocation of indirect costs from CytRx for overhead and general administrative costs (that have been allocated based upon estimates developed by CytRx’s management and include corporate salaries, benefits, accounting, rent, and other general and administrative expenses). There are no Successor financial statements for the period from April 3, 2006 (date of incorporation) to December 31, 2006 as there was no activity. The information presented as of and for the three-month periods ended March 31, 2008 and 2007 as well as the cumulative financial information for the period from January 1, 2003 (date of inception) through March 31, 2008 is unaudited and has been prepared on the same basis as the audited financial statements and includes all adjustments, consisting of only normal recurring adjustments, necessary for the fair presentation of this information in all material respects.


F-8


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
Cash Equivalents — The Company considers all highly-liquid debt instruments with an original maturity of 90 days or less to be cash equivalents. Cash equivalents consist primarily of amounts invested in money market accounts.
Fair Value of Financial Instruments — The carrying amounts reported in the balance sheets for cash equivalents, short term investments, accounts payable and accrued liabilities approximate their fair values due to their short-term nature.
Short-term Investments — During the first quarter of 2008, the Company purchased zero coupon U.S Treasury Bills at a discount. These securities matured. They are classified as held-to-maturity and under Statement of Financial Accounting Standards No. 115,Investments in Debt Securities, are measured at amortized cost. The interest income has been amortized using the effective interest rate.
Equipment and Furnishings — Equipment and furnishings are stated at cost and depreciated using the straight-line method based on the estimated useful lives (generally three to five years for equipment and furniture) of the related assets.
Impairment of Long-Lived Assets — The Company reviews long-lived assets, including finite lived intangible assets, for impairment on an annual basis, as of December 31, or on an interim basis if an event occurs that might reduce the fair value of such assets below their carrying values. An impairment loss would be recognized based on the difference between the carrying value of the asset and its estimated fair value, which would be determined based on either discounted future cash flows or other appropriate fair value methods.
Patents and Patent Application Costs — Although the Company believes that its patents and underlying technology have continuing value, the amount of future benefits to be derived from the patents is uncertain. Patent costs are, therefore, expensed as incurred.
Basic and Diluted Loss per Common Share — Basic and diluted loss per common share are computed based on the weighted average number of common shares outstanding. Common share equivalents (which consist of options) are excluded from the computation of diluted loss per share since the effect would be antidilutive. Common share equivalents which could potentially dilute basic earnings per share in the future, and which were excluded from the computation of diluted loss per share, totaled approximately 1.4 million shares at March 31, 2008 and 1,300,000 million shares at December 31, 2007. Because the Predecessor had no shares outstanding during the years ended December 31, 2004 through December, 31, 2006, and the successor has no outstanding shares during the three months ended March 31, 2007, a loss per common share could not be calculated.
Share-based Compensation — CytRx accounted for its stock based compensation plans under the recognition and measurement provisions of Accounting Principles Board (“APB”) No. 25, “Accounting for Stock Issued to Employees” (“APB 25”), and related interpretations for all awards granted to employees prior to January 1, 2006. Under APB 25, when the exercise price of options granted to employees equals the market price of the common stock on the date of grant, no compensation expense is recorded. When the exercise price of options granted to employees is less than the market price of the common stock on the date of grant, compensation expense is recognized over the service period which is typically the vesting period. CytRx did not allocate any APB 25 stock compensation expense to the Predecessor for the years ended December 31, 2005.
The statement of expense for our Predecessor as of and for the year ended December 31, 2006, reflects the accounting for share-based payments in accordance with Statement of Financial Accounting Standard (“SFAS”) 123(R) “Share-based Payment” (“SFAS 123(R)”) as adopted by CytRx using the modified prospective method


F-9


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
on January 1, 2006. Such amounts have been reduced by an estimate of forfeitures of unvested awards. Results for periods prior to January 1, 2006, have not been restated to retroactively apply SFAS 123(R).
The following table illustrates the pro forma effect on the Predecessor’s net loss (net loss per share was not calculated due to the Predecessor not having any shares outstanding) as if CytRx had applied the fair value recognition of SFAS No. 123,Accounting for Stock-Based Compensation(“SFAS 123”), to options granted under CytRx’s stock plans prior to January 1, 2006. The pro forma impact of stock based employee compensation expense was allocated to the Predecessor in a similar manner as other indirect expenses. For purposes of this presentation, the value of the options is estimated using a Black-Scholes option pricing model and recognized as an expense on a straight-line basis over the options’ vesting periods. Numbers presented are in thousands.
     
  Year Ended
 
  December 31,
 
  2005 
 
Net loss, as reported $(2,209)
Total stock-based employee compensation expense determined under fair-value based method for all awards  (54)
     
Pro forma net loss $(2,263)
     
     
     
  2005 
 
Weighted average risk free interest rate  4.10%
Volatility factors of the expected market price of CytRx’s common stock  109%
Expected lives (years)  8 
Weighted average years outstanding  4.8 
Dividend yields  0%
RXi adopted SFAS 123(R) using the prospective method and the guidance in the Securities and Exchange Commission’s (“SEC”) Staff Accounting Bulletin (“SAB”) 107 relating to the adoption of SFAS 123(R). SFAS 123(R) requires the measurement and recognition of compensation expense for all share-based payment awards made to employees and non-employee directors, including employee stock options. Stock compensation expense based on the grant date fair value estimated in accordance with the provisions of SFAS 123(R) is recognized as an expense over the requisite service period.
For stock options granted as consideration for services rendered by non-employees, the Company recognizes compensation expense in accordance with the requirements of SFAS 123(R), Emerging Issues Task Force (“EITF”) IssueNo. 96-18, “Accounting for Equity Instruments that are Issued to Other Than Employees for Acquiring, or in Conjunction with Selling, Goods or Services” andEITF 00-18 “Accounting Recognition for Certain Transactions involving Equity Instruments Granted to Other Than Employees,” as amended.
Non-employee option grants that do not vest immediately upon grant are recorded as an expense over the vesting period of the underlying stock options. At the end of each financial reporting period prior to vesting, the value of these options, as calculated using the Black-Scholes option pricing model, will be re-measured using the fair value of the Company’s common stock and the non-cash compensation recognized during the period will be adjusted accordingly. Since the fair market value of options granted to non-employees is subject to change in the future, the amount of the future compensation expense will include fair value re-measurements until the stock options are fully vested. The Company recognized $1.0 million, $474,000 and $150,000, of stock based compensation expense related to non-employee stock options for the years ended December 31, 2007, 2006 and 2005, respectively.


F-10


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
Valuations —During the year ended December 31, 2007, RXi entered into a number of noncash transactions with third parties in which shares were exchanged for either intellectual properties or services. These transactions included (1) the contribution by CytRx to RXi of various technologies and assets in exchange for 7,040,000 shares of common stock on January 8, 2007, which was recorded by RXi at the historical cost basis of CytRx of $48,000, (2) the investment by CytRx in RXi of $17.0 million of cash in exchange for 3,273,000 of additional shares of common stock on April 30, 2007, (3) the contribution by UMMS to RXi of various intellectual properties in exchange for 462,000 shares of common stock on April 30, 2007 which was recorded by RXi as an in process research and development expenditure of $2,311,000, (4) the granting under the RXi Pharmaceuticals Corporation 2007 Incentive Plan (“2007 Plan”) of 1,177,000 options for common stock to employees on May 23, 2007, and (5) the granting under the 2007 Plan of 105,561 options on July 11, 2007, 68,335 options on August 16, 2007, 146,000 options on October 18, 2007 for common stock to employees and 100,0000 options on January 10, 2008.
To properly account for these transactions, a value needed to be determined for either the shares given up or the intellectual properties or services received, whichever was more readily determinable. Since our stock was not publicly traded, a market value for our stock is not readily available. To assist in this matter, the Board of Directors hired Sanli Pastore & Hill, Inc., an independent third party valuation firm, for the purpose of valuing the transactions at January 8, 2007, April 30, 2007, August 16, 2007, and October 18, 2007. The valuation analysis at January 8, 2007, valued the various technologies and assets contributed to RXi based upon the “reproduction cost approach.” The fair market value of RXi as of April 30, 2007, August 16, 2007, October 18, 2007 and January 10, 2008 were determined based upon a combination of the reproduction cost approach used in the January 8, 2007, as well as the “market capitalization approach” and the “guidelines public company method — book value multiplier approach.”
Because the Company is a development stage company and the amounts, if any, of future revenues remained uncertain and projected revenues and profits could not be made, it was determined that the reproductive cost approach was the appropriate analysis as cost approach methods are generally applicable when the subject intangible asset is newer and when it is a fungible property. The “reproduction cost” valuation method was selected, which estimates the cost to construct, at current market price as of the date of the analysis, an exact duplicate or replica of the subject intangible asset, using the same materials, production standards, design layout, and quality of workmanship as the subject intangible asset. The reproduction intangible asset will include the same adequacies, superadequacies, and obsolescence as the subject intangible asset. The reproduction cost valuation method includes analysis of five components of cost: (i) material, (ii) labor, (iii) overhead, (iv) developer’s profit, and (v) entrepreneurial incentive. Because the reproductive cost approach may not reflect the earning power of new technology or the ultimate market share that may be obtained, it was determined that only limited consideration should be given to this approach and its value was weighted at 10%.
The market capitalization increase approach includes an analysis (i) of the increase in our market capitalization since the date of the announcement that CytRx had contributed its RNAi assets to us (January 8, 2007) and (ii) a comparison of CytRx’s market capitalization to three other RNAi-based companies, as well as significant public announcements by CytRx occurring since January 8, 2007, and general public news announcements relating to RNAi technology since January 8, 2007 to April 30, 2007, and then to each of August 16, 2007, October 18, 2007 and January 10, 2008.. Based on these factors and taking into account potential market overreaction and other news in non-RNAi operations, only limited consideration to this approach to valuation was given and its value was weighted at 10%.
The guideline public company method — book value multiplier approach involves an evaluation of market transactions in business securities that can provide objective, empirical data for developing valuation ratios to apply in a business valuation. The valuation process for RXi applies a comparative analysis of RXi with


F-11


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
publicly traded companies in the same industry, such as Sirna Therapeutics, Inc., Alnylam Pharmaceuticals, Inc and Nastech Pharmaceuticals Co, Inc. The relationship of the market value of invested capital of each guideline company was applied to each company’s respective underlying net asset value in order to obtain market value of invested capital to book value multiple. The market value of invested capital to book value multiple calculated from the guideline companies method was then applied to obtain a pre-money fair market value of our total assets. Because this method of valuation is most appropriate when comparing companies with similar operations when no future income-stream projections are available, management weighted this approach value at 80%.
As of March 31, 2008 and December 31, 2007, the Company had a total of 1,435,184 and 1,335,184 outstanding options on common stock to various employees, directors, consultants and SAB members pursuant to our 2007 Plan, respectively. These options have an exercise price of $5.00 per share as the RXi Board determined that the fair market value of the shares had not changed since the April 30, 2007, August 16, 2007, October 18, 2007 and January 10, 2008 valuations.
Research and Development Expenses — Research and development consists of direct and overhead-related research activities and are expensed as incurred. Expenditures to acquire technologies, including licenses, which are utilized in research and development and which have no alternative future use are expensed when incurred. Technology we develop for use in our products is expensed as incurred until technological feasibility has been established.
Income Taxes — Neither RXi or the Predecessor file separate income tax returns, but instead are included in the income tax returns filed by CytRx. For purposes of the Predecessor carve-out financial statements, no tax provision was provided as the Predecessor was not a legal entity, and any tax benefits resulting from the operations of the Predecessor are included in CytRx’s consolidated financial statements and income tax returns. Prior to the March 2008 Distribution, the Company was included in the consolidated income tax return of CytRx Corporation. After the distribution, the Company will file its own stand alone income tax returns.
RXi (the successor) recognizes liabilities or assets for the deferred tax consequences of temporary differences between the tax basis of assets or liabilities and their reported amounts in the financial statements in accordance with SFAS No. 109,Accounting for Income Taxes (“SFAS 109”).These temporary differences will result in taxable or deductible amounts in future years when the reported amounts of the assets or liabilities are recovered or settled. SFAS 109 requires that a valuation allowance be established when management determines that it is more likely than not that all or a portion of a deferred asset will not be realized. RXi evaluates the realizability of its net deferred income tax assets and valuation allowances are provided as necessary. During this evaluation, RXi reviews its forecasts of income in conjunction with other positive and negative evidence surrounding the realizability of its deferred income tax assets to determine if a valuation allowance is required. Adjustments to the valuation allowance will increase or decrease RXi’s income tax provision or benefit. In July 2006, the Financial Accounting Standards Board (“FASB”) issued Interpretation No. 48,Accounting for Uncertainty in Income Taxes, an interpretation of FASB Statement No. 109 (“FIN No. 48”), to create a single model to address accounting for uncertainty in tax positions. FIN No. 48 clarifies the accounting for income taxes by prescribing a minimum recognition threshold in which a tax position be reached before financial statement recognition. FIN No. 48 also provides guidance on derecognition, measurement, classification, interest and penalties, accounting in interim periods, disclosure and transition. FIN No. 48 is effective for fiscal years beginning after December 15, 2006. The Company adopted FIN No. 48 as of January 1, 2007, as required. The adoption of FIN No. 48 did not have an impact on the Company’s financial position and results of operations.
Concentrations of Credit Risk — Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash, cash equivalents and short-term investments. As of March 31, 2008 and December 31, 2007, all of the Company’s cash, cash equivalents and short-term


F-12


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
investments were maintained in a large well-capitalized financial institution. The Company’s investment policy disallows investment in any debt securities rated less than “investment grade” by national ratings services. The Company has not experienced any losses on its deposits of cash and cash equivalents or its short-term investments.
Comprehensive Loss — The Company’s net loss is equal to its comprehensive loss for the years ended December 31, 2007, 2006 and 2005, for the three months ended March 31, 2008 and 2007 and the period from inception (January 1, 2004) through March 31, 2008
Use of Estimates — The preparation of the financial statements in accordance with United States generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant estimates include the inputs used in the calculations of values using the Black-Scholes model for common stock options granted to employees, directors, consultants and other organizations, the estimate of common stock option forfeitures, the accrual for research and development expenses as well as commitments and contingencies. Actual results could materially differ from those estimates.
Indirect General and Administrative Allocations — Both the Predecessor and Successor have received services and support from CytRx. The Predecessor’s operations and to a lesser extent the Successor were dependent upon CytRx’s ability to perform these services and support functions. The costs associated with these services and support functions, which included some members of management, legal and accounting, have been allocated to the both the Predecessor and Successor indirect expenses based upon (1) estimates of the percentage of time spent by individual CytRx employees working on RXi matters by year, and (2) allocations of various expenses associated to each employee including salary, benefits, rent associated with an employee’s office space, accounting and other general and administrative expenses. The percentage of time spent by individual CytRx employees was then multiplied times the allocation of various expenses associated with the various employees to develop an allocation of expense per employee. The expense allocation per individual employee was then summed to come to the total expense allocation for the year. As of December 31, 2007, these allocations ceased. Corporate expense allocations were:
             
  For the Years Ended December 31, 
  2007  2006  2005 
  (Successor)  (Predecessor)
  (Predecessor) 
     (In thousands)    
 
Executive $285  $115  $60 
Accounting  141   24   14 
Legal  125   39   15 
             
Total $551  $178  $89 
             
Parent Company’s Net Deficit — The Parent Company’s Net Deficit of the Predecessor consists of CytRx’s initial investment in RXi and subsequent changes in RXi’s net investment resulting from RXi being an integrated part of CytRx. All disbursements for the Predecessor were made by CytRx. In addition, CytRx allocated certain indirect general and administrative expenses to both the Predecessor and Successor as disclosed inIndirect General and Administrative Allocationsabove.
3.  Recent Accounting Pronouncements
In December 2007, the FASB issued SFAS No. 141 (revised 2007), “Business Combinations,” or SFAS No. 141R. SFAS No. 141R broadens the guidance of SFAS No. 141, extending its applicability to all transactions and other events in which one entity obtains control over one or more other businesses. It broadens the fair value measurement and recognition of assets acquired, liabilities assumed and interests


F-13


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
transferred as a result of business combinations. SFAS No. 141R expands on required disclosures to improve the statement users’ abilities to evaluate the nature and financial effects of business combinations. SFAS No. 141R is effective for fiscal years beginning after December 15, 2008. We do not expect the adoption of SFAS No. 141R to have a material impact on our financial statements.
In February 2007, the FASB issued SFAS No. 159,The Fair Value Option for Financial Assets and Financial Liabilities(“SFAS No. 159”). SFAS No. 159 permits entities to choose to measure many financial assets and financial liabilities at fair value. Unrealized gains and losses on items for which the fair value option has been elected are reported in earnings. SFAS No. 159 is effective for fiscal years beginning after November 15, 2007. The Company adopted SFAS No. 159 as of January 1, 2008, as required. The adoption of SFAS No. 159 did not have an impact on the Company’s financial position and results of operations.
In June 2007, the FASB ratified the consensus on EITF IssueNo. 06-11,Accounting for Income Tax Benefits of Dividends on Share-Based Payment Awards(“EITF 06-11”).EITF 06-11 requires companies to recognize the income tax benefit realized from dividends or dividend equivalents that are charged to retained earnings and paid to employees for non-vested equity-classified employee share-based payment awards as an increase to additional paid-in capital.EITF 06-11 is effective for fiscal years beginning after September 15, 2007. The Company adoptedEITF 06-11 as of January 1, 2008, as required. The adoption ofEITF 06-11 did not have an impact on the Company’s financial position and results of operations.
In June 2007, the FASB ratified the consensus reached on EITF IssueNo. 07-3,Accounting for Nonrefundable Advance Payments for Goods or Services Received for Use in Future Research and Development Activities(“EITF 07-3”), which requires that nonrefundable advance payments for goods or services that will be used or rendered for future research and development activities be deferred and amortized over the period that the goods are delivered or the related services are performed, subject to an assessment of recoverability.EITF 07-3 will be effective for fiscal years beginning after December 15, 2007. The Company adoptedEITF 07-3 as of January 1, 2008, as required. The adoption ofEITF 06-11 did not have an impact on the Company’s financial position and results of operations.
4.  Short-term Investments
The Company purchased zero coupon U.S. Treasury Bills at a discount during 2007. These securities matured in the first quarter of 2008. The investments were classified as held-to-maturity and under Statement of Financial Accounting Standards No. 115,Investments in Debt Securities,are measured at amortized cost since the Company had the intent and ability to hold these securities to maturity. The interest income has been amortized using the effective interest rate method The Company had no short-term investments as of March 31, 2008.
Effective January 1, 2008, we implemented SFAS No. 157,Fair Value Measurement, or SFAS 157, for our financial assets and liabilities that are re-measured and reported at fair value at each reporting period, and are re-measured and reported at fair value at least annually using a fair value hierarchy that is broken down into three levels. We have categorized our cash equivalents, and short term investments as a Level 1 hierarchy. The valuation for Level 1 was determined based on a “market approach” using quoted prices in active markets for identical assets. Valuations of these assets do not require a significant degree of judgment.
In accordance with the provisions of FSPNo. FAS 157-2,Effective Date of FASB Statement No. 157,we have elected to defer implementation of SFAS 157 as it relates to our financial assets and liabilities that are recognized and disclosed at fair value in the financial statements on a nonrecurring basis until January 1, 2009. We are evaluating the impact, if any, this Standard will have on our financial assets and liabilities.
The adoption of SFAS 157 as it relates to our financial assets and liabilities that are re-measured and reported at fair value at least annually did not have an impact on our financial results.


F-14


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
5.  Development Stage Supplemental Equity Disclosure
Summarized below are the Company’s equity (common stock and common stock options) transactions since the Company’s inception through March 31, 2008.
                     
          Price per
       
          Share or
       
    Shares of
  Dollar
  Exercise
  Counter
 Nature of
 Basis for
    Common
  Amount of
  Price per
  Party to
 Non-Cash
 Assigning
Type of Security
 
Date of Issuance
 Stock  Consideration  Share  Transaction Consideration Cost
       (In thousands)          
 
Common Stock April 3, 2006  1,624,278  $2  $0.002  Founders NA Cash
Common Stock January 8, 2007  7.040,318   48  $0.007(A) CytRx Contributed
Assets
 Predecessor Cost
Common Stock April 30, 2007  3,273,292   15,348  $5.19(B) CytRx NA Cash
                    Independent
                  Intellectual third-party
Common Stock April 30, 2007  462,112   2,311  $5.00  UMMS Properties valuation
Common Stock August 18, 2007  30,000   150  $5.00  Directors  Cash
                    Independent
                    third-party
Common Stock September 28, 2007  188,387   978  $5.19  CytRx NA valuation
                Exercise of    
Common Stock November 21, 2007  66,045   331  $5.00  Stock Options NA Cash
                     
Sub-total Common Stock issued    12,684,432  $19,168           
                     
Common Stock Options May 23, 2007  550,231(C)  2,230  $5.00  Employees and
Non-employees
 Professional &
Employee
services
 Independent
third-party
valuation
Common Stock Options July 11, 2007  19,792(D)  55  $5.00  Employees and
Non-employees
 Professional &
Employee
services
 Independent
third-party
valuation
Common Stock Options August 16, 2007  8,166(E)  32  $5.00  Employees and
Non-employees
 Professional &
Employee
services
 Independent
third-party
valuation
Common Stock Options October 18, 2007  26,374(F)  59  $5.00  Employees and
Non-employees
 Professional &
Employee
services
 Independent
third-party
valuation
Common Stock Options January 10, 2008  25,000(G)  66  $5.00  Employees and
Non-employees
 Professional &
Employee
services
 Independent
third-party
valuation
                     
Sub-total of Common Stock Options Vested    629,563   2,442           
                     
Sub-total of Dollar Amount of Consideration       $21,610           
Contributed Capital(H)        831      CytRx Allocation of
Management
Expenses
 Cost
                     
Additional Paid-in Capital       $22,441           
                     
(A)Transactions between related parties are accounted for at the historical cost of CytRx, with the intellectual property which was previously expensed on CytRx’s books being recorded at zero costIssuance and equipment and furnishings being recorded at $48,000.
(B)RXi received gross proceeds of $17.0 million for the issuance of the 3,273,292 shares of common stock which equals $5.19 per share. The gross proceeds were reduced by a reimbursement to CytRx of (1) $1.3 million for RXi’s pro rata share of offering costs related to the April 17, 2007 private placementDistribution.


F-15


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
conducted by CytRx to fund its capital contribution to the Company and (2) $363,000 of expenses incurred on behalf of RXi for the year ended December 31, 2006. Net proceeds to RXi after these charges were $15.3 million or $4.69 a share.
(C)Common grant underlying options granted is 1,176,797 and the vested portion of the common stock option grants at March 31, 2008 was 550,231.
(D)Common stock underlying options granted is 105,561 and the vested portion of the common stock option grant at March 31, 2008 was 19,792.
(E)Common stock underlying options granted is 68,335 and the vested portion of the common stock option grant at March 31, 2008 was 8,166.
(F)Common stock underlying options granted is 146,000 and the vested portion of the common stock option grant at March 31, 2008 was 26,374.
(G)Common stock underlying options granted is 100,000 and the vested portion of the common stock option grant at March 31, 2008 was 25,000.
(H)RXi received an additional contribution from CytRx of $551,000, which represents time and expense incurred by CytRx management in the collaboration of our financial statements, and in addition includes $280,000 of options to a SAB member.
6.  Deposits
At March 31, 2008 (unaudited), December 31, 2007 and 2006 (successor) and 2006 (predecessor), the Company had $37,000, $66,000, $50,000 and $50,000, respectively, on deposit with landlords related to leased facilities, all of which are classified as Deposits.
7.  Equipment and Furnishings, net
Prior to January 2007, CytRx outsourced all of its RNAi therapeutic research and development activities to third parties, therefore there were no laboratory equipment or furnishings used by CytRx in the development of RNAi therapeutics. On January 8, 2007, CytRx contributed general lab equipment and furnishings to RXi. The contributed general lab equipment and furnishings were valued at approximately $48,000, which was CytRx’s depreciated cost basis on the date of transfer.
                 
  As of March 31,
  As of December 31, 
  2008  2007  2006  2006 
  (Successor)  (Successor)  (Successor)  (Predecessor) 
  (Unaudited)          
  (In thousands) 
 
Equipment and furnishings $395  $370  $  $ 
Less: accumulated depreciation  (31)  (26)      
                 
Property and equipment, net $364  $344  $  $ 
                 
Depreciation expense for the three months ended March 31, 2008 and 2007 was approximately $29,000 and $36,000, respectively and for the year December 31, 2007 was approximately $36,000. There was no depreciation expense for the twelve month periods ended December 31, 2006 and 2005.


F-16


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
8.  Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities are summarized below (in thousands).
                 
  As of March 31,
  As of December 31, 
  2008  2007  2006  2006 
  (Successor)  (Successor)  (Successor)  (Predecessor) 
  (Unaudited)          
  (In thousands) 
 
Professional fees $599  $397  $   176 
Research and development costs  83   102      10 
Insurance  221          
Payroll related costs  183   360       
Equipment and furnishings     103       
Rent     29       
Taxes  12   25       
Printing  272          
Other  96   46      5 
                 
Total accrued expenses and other current liabilities $1,467  $1,062  $  $191 
                 
The Company acquires assets still in development and enters into research and development arrangements with third parties that often require milestone and royalty payments based on the progress of the asset through development stages. Milestone payments may be required, for example upon approval of the product for marketing by a regulatory agency. In certain agreements, RXi is required to make royalty payments based upon a percentage of the sales. Because of the contingent nature of these payments, they are not included in the table of contractual obligations.
These arrangements may be material individually, and in the unlikely event that milestones for multiple products covered by these arrangements were reached in the same period, the aggregate charge to expense could be material to the results of operations. In addition, these arrangements often give RXi the discretion to unilaterally terminate development of the product, which would allow RXi to avoid making the contingent payments; however, RXi is unlikely to cease development if the compound successfully achieves clinical testing objectives. The Company’s contractual obligations that will require future cash payments as of December 31, 2007 are as follows (in thousands):
                         
     Non-Cancelable     Cancelable       
  Operating
  Employment
     License
       
Years Ending December 31,
 Leases(1)  Agreements(2)  Subtotal  Agreements(3)  Total    
 
2008 $180  $942  $1,122  $716  $1,838     
2009  105   448   553   666   1,219     
2010     290   290   616   906     
2011     105   105   816   921     
2012           1,126   1,126     
Thereafter           10,325   10,325     
                         
Total $285  $1,785  $2,070  $14,265  $16,335     
                         
(1)Operating leases are primarily facility and equipment related obligations with third-party vendors. Operating lease expenses during the three month periods ended March 31, 2008 was $46,000. There was


F-17


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
no operating lease expenses during the three month period ended March 31, 2007, respectively, and for the years ended December 31, 2007 and 2006 were approximately $244,000 and $2,000, respectively.
(2)Employment agreement obligations include management contracts, as well as scientific advisory board member compensation agreements. Certain agreements provide for minimum salary levels, adjusted annually at the discretion of RXi’s Board of Directors, as well as for minimum annual bonuses.
(3)License agreements primarily relate to our obligations with UMMS associated with RNAi and, for future periods, represent minimum annual royalty payment obligations.
The Company applies the disclosure provisions of FASB Interpretation No. (“FIN”) 45, “Guarantor’s Accounting and Disclosure Requirements for Guarantees, Including Indirect Guarantees of Indebtedness of Others” (“FIN 45”), to its agreements that contain guarantee or indemnification clauses. The Company provides (i) indemnifications of varying scope and size to certain investors and other parties for certain losses suffered or incurred by the indemnified party in connection with various types of third-party claims; and (ii) indemnifications of varying scope and size to officers and directors against third party claims arising from the services they provide to us. These indemnifications give rise only to the disclosure provisions of FIN 45. To date, the Company has not incurred costs as a result of these obligations and does not expect to incur material costs in the future. Accordingly, the Company has not accrued any liabilities in its financial statements related to these indemnifications.
10.  Stock Based Compensation
RXi adopted Statement of Accounting Standard (“SFAS”) 123(R) “Share-Based Payment (Revised 2004)” (“SFAS 123(R)”) using the modified prospective method and the guidance in the SEC’s Staff Accounting Bulletin (“SAB”) 107 relating to the adoption of SFAS 123(R). SFAS 123(R) requires the measurement and recognition of compensation expense for all share-based payment awards made to employees, non-employee directors, and consultants, including employee stock options. Stock compensation expense based on the grant date fair value estimated in accordance with the provisions of SFAS 123(R) is recognized as an expense over the requisite service period.
For stock options granted as consideration for services rendered by non-employees, the Company recognizes compensation expense in accordance with the requirements of SFAS 123(R), Emerging Issues Task Force (“EITF”) IssueNo. 96-18, “Accounting for Equity Instruments that are Issued to Other Than Employees for Acquiring, or in Conjunction with Selling, Goods or Services” andEITF 00-18 “Accounting Recognition for Certain Transactions involving Equity Instruments Granted to Other Than Employees,” as amended.
Non-employee option grants that do not vest immediately upon grant are recorded as an expense over the vesting period of the underlying stock options. At the end of each financial reporting period prior to vesting, the value of these options, as calculated using the Black-Scholes option pricing model, will be re-measured using the fair value of the Company’s common stock and the non-cash compensation recognized during the period will be adjusted accordingly. Since the fair market value of options granted to non-employees is subject to change in the future, the amount of the future compensation expense will include fair value re-measurements until the stock options are fully vested.


F-18


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
We are currently using the Black-Scholes option-pricing model to determine the fair value of nonemployee option grants. There were no options granted for the three month period ended March 31, 2007. For option grants issued in the three month period ended March 31, 2008 and for the year ended December 31, 2007, the following weighted average assumptions were used:
         
  For the Three Months Ended
  For the Year Ended
 
  March 31, 2008  December 31, 2007 
  (Unaudited)    
 
Risk-free interest rate  2.567%  4.50%
Expected volatility  106%  108.7%
Expected lives (years)  6   6 
Expected dividend yield  0%  0%
The board of directors hired an independent third party valuation firm for the purpose of valuing the common stock option transactions at January 8, 2007, April 30, 2007, August 16, 2007, October 18, 2007 and January 10, 2008. The valuation analysis at January 8, 2007, valued the various technologies and assets contributed to RXi based upon the “reproduction cost approach.” The fair market value of RXi as of April 30, 2007, August 16, 2007, October 18, 2007 and January 10, 2008 were determined based upon a combination of the reproduction cost approach used in the January 8, 2007, as well as the “market capitalization approach” and the “guidelines public company method — book value multiplier approach.”
The fair value of RXi’s common stock and RXi’s expected common stock price volatility assumption is based upon an independent third party valuation that determined the RXi corporate valuation and analyzed the volatility of a basket of comparable companies. The expected life assumptions were based upon the simplified method provided for under SAB 107, which averages the contractual term of RXi’s options of ten years with the average vesting term of three years for an average of six years. The dividend yield assumption of zero is based upon the fact that RXi has never paid cash dividends and presently has no intention of paying cash dividends. The risk-free interest rate used for each grant was also based upon prevailing short-term interest rates. Based on CytRx’s historical experience, RXi has estimated an annualized forfeiture rate of 4.0% for options granted to its employees, 2.1% for options granted to senior management and no forfeiture rate for the directors. RXi will record additional expense if the actual forfeitures are lower than estimated and will record a recovery of prior expense if the actual forfeiture rates are higher than estimated.
The following table summarizes stock option activity from inception of the Plan through March 31, 2008:
         
  Total Number
  Weighted Average
 
  of Shares  Exercise Price 
 
Outstanding at January 1, 2007    $5.00 
Granted  1,496,693   5.00 
Exercised  66,045   5.00 
Forfeited  95,464   5.00 
         
Outstanding at December 31, 2007  1,335,184   5.00 
Granted  100,000   5.00 
Exercised      
Forfeited      
         
Outstanding at March 31, 2008 (unaudited)  1,435,184  $5.00 
         
Options exercisable at December 31, 2007  495,823  $5.00 
         
Options exercisable at March 31, 2008 (unaudited)  629,563  $5.00 
         


F-19


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
The aggregate intrinsic values of outstanding and exercisable options at March 31, 2008 were calculated based on the closing price of the Company’s stock on March 31, 2008 of $9.50 per share less the exercise price of those shares. The total intrinsic value of outstanding stock options and exercisable common stock options for the three months ended March 31, 2008 was $6.5 million and $2.8 million, respectively. The aggregate intrinsic values of outstanding and exercisable options at December 31, 2007 is negligible.
As of March 31, 2008, an aggregate of 2.75 million shares of common stock were reserved for issuance under the RXi Pharmaceuticals Corporation 2007 Incentive Plan, including 1,435,184 shares subject to outstanding common stock options granted under this plan and approximately 1,248,771 shares available for future grants. The administrator of the plan determines the times which an option may become exercisable. Vesting periods of options granted to date include vesting upon grant to vesting at the end of a five year period. The options will expire, unless previously exercised, not later than ten years from the grant date.
A summary of the activity for nonvested stock options from inception of the Plan through March 31, 2008 is presented below:
         
     Weighted Average
 
  Stock
  Grant Date Fair
 
  Options  Value per Share 
 
Nonvested at January 1, 2007    $ 
Granted  1,496,693   3.50 
Vested  (495,823)  3.40 
Exercised  (66,045)  3.58 
Pre-vested forfeitures  (95,464)  3.58 
         
Nonvested at December 31, 2007  839,361   3.54 
Granted  100,000   2.92 
Vested  133,740   3.60 
         
Non-Vested at March 31, 2008 (unaudited)  805,621  $2.95 
         
At March 31, 2008, there remained approximately $1.1 million of unrecognized compensation expense related to unvested common stock options granted to non-employees that is expected to be recognized as expense over a weighted-average period of 1.8 years. The following table summarizes stock option activity for non-employees from inception of the Plan through March 31, 2008:
         
     Weighted
 
     Average
 
  Stock
  Exercise
 
  Options  Price 
 
Outstanding — January 1, 2007    $ 
Granted  357,318   5.00 
Exercised      
Forfeited      
         
Outstanding — December 31, 2007 and March 31, 2008  357,318  $5.00 
         
Exercisable at December 31, 2007  221,883  $5.00 
         
Exercisable at March 31, 2008 (unaudited)  225,477  $5.00 
         


F-20


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
11.  Income Taxes
RXi’s operating results have been included in CytRx’s consolidated U.S. Federal and state income tax returns through the year ended December 31, 2007. Based on an assessment of all available evidence including, but not limited to the fact the RXi operating results have been included in CytRx consolidated U.S. Federal and State income tax return for the year ended December 31, 2007, the Company’s limited operating history in its core business and lack of profitability, uncertainties of the commercial viability of its technology, the impact of government regulation and healthcare reform initiatives, and other risks normally associated with biotechnology companies, the Company has concluded that it is more likely than not that these net operating loss carryforwards and credits will not be realized and, as a result, a 100% deferred income tax valuation allowance has been recorded against these assets.
We have adopted the provisions of Financial Accounting Standards Board (“FASB”) Interpretation No. 48, “Accounting for Uncertainty in Income Taxes” (“FIN 48”). FIN 48 clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements in accordance with SFAS No. 109, “Accounting for Income Taxes.” FIN 48 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return and also provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure and transition. Since our operating results have been included in CytRx’s consolidated U.S. Federal and state income tax returns through the year ended December 31, 2007, no evaluation has been required by us for tax years up to and including the tax year ended December 31, 2007.
The components of federal and state income tax expense for the years ended December 31, 2007 and 2006 of the Successor were as follows (in thousands):
         
  As of December 31, 
  2007  2006 
 
Current        
Federal $  $ 
State  25    
Deferred        
Federal  (3,520)   
State  (1,146)   
   ��     
Total deferred  (4,666)   
Valuation allowance  4,666    
         
Total income tax expense $25  $ 
         


F-21


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
The components of net deferred tax assets as of December 31, 2007 and 2006 were as follows (in thousands):
         
  As of December 31, 
  2007  2006 
 
Net operating loss carryforwards $3,028  $ 
Tax credit carryforwards  223    
Non-qualified stock based compensation  512    
Other  4    
Licensing deduction deferral  899    
         
Gross deferred tax assets  4,666    
Valuation allowance  (4,666)   
         
Net deferred tax asset $  $ 
         
The provision for income taxes differs from the provision computed by applying the Federal statutory rate to net loss before income taxes as follows (in thousands):
         
  Years Ended December 31, 
  2007  2006 
 
Expected federal income tax benefit $(3,945) $ 
Non-qualified stock compensation  184    
Effect of change in valuation allowance  4,666    
State income tax credits  (160)   
State income taxes after credits  (727)   
Other  7    
         
  $25  $ 
         
12.  License Agreements
During the year ended December 31, 2007, RXi entered into a license agreement with Cold Spring Harbor Laboratory for shRNA (small hairpin RNA), for which we paid $50,000 and agreed to make future milestone and royalty payments upon successful development and commercialization of products, and four exclusive license agreements and an invention disclosure agreement with UMMS for which we paid cash of $453,000 and issued 462,112 shares of our common stock valued at $2.3 million, or $5.00 per share. For each RNAi product developed in connection with the license granted by CSHL, the possible aggregate milestone payments equal $2,650,000. The invention disclosure agreement has an initial term of three years and provides the option to negotiate licenses to certain RNAi technologies discovered at UMMS.
On August 29, 2007, RXi entered into a license agreement with TriLink Biotechnologies, Inc. for three RNAi chemistry technologies for all therapeutic RNAi applications, for which we paid $100,000 and agreed to pay yearly maintenance fees of $30,000, as well as future clinical milestone payments and royalty payments based on sales of therapeutic products developed from the licensed technologies.
In October 2007, we entered into a license agreement with Dharmacon, Inc. (now part of Thermo Fisher Scientific Inc.), pursuant to which we obtained an exclusive license to certain RNAi sequences to a number of target genes for the development of our rxRNA compounds. Further, we have obtained the right to license additional RNAi sequences, under the same terms, disclosed by Thermo Fisher Scientific Inc. in its pending


F-22


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
patent applications against target genes and have received an option for exclusivity for other siRNA configurations. As consideration for this license, we paid an up-front fee of $150,000 and agreed to pay future clinical milestone payments and royalty payments based on sales of siRNA compositions developed in connection with the licensed technology.
In November 2007, we entered into a license agreement with Invitrogen IP Holdings, Inc. pursuant to which we were granted rights under four patents relating to RNA target sequences, RNA chemical modifications, RNA configurationsand/or RNA delivery to cells. As consideration for this license, we paid an up-front fee of $250,000 and agreed to pay yearly maintenance fees of the same amount beginning in 2008. Further, we are obligated to pay a fee for each additional gene target added to the license as well as a fee on the first and second anniversaries of the date we were granted consent to add the gene target to the list of those covered by the license. We have also been granted, for each gene target, an option to secure pre-clinical rightsand/or the clinical rights, for which we would be required to pay additional fees. Further, we are required to make future clinical milestone payments and royalty payments based on sales of therapeutic products developed from the licensed technologies.
13.  Related Party Transactions
On January 8, 2007, we entered into a Contribution Agreement with CytRx under which CytRx assigned and contributed to us substantially all of its RNAi-related technologies and assets. The assigned assets consisted primarily of CytRx’s licenses from UMMS and from the Carnegie Institution of Washington relating to fundamental RNAi technologies, as well as equipment situated at CytRx’s Worcester, Massachusetts laboratory. In connection with the contribution of the licenses and other assets, we assumed primary responsibility for all payments to UMMS and other obligations under the contributed licenses and assets. We recorded the assigned assets at CytRx’s historical cost basis of $48,000 on the date of contribution and issued to CytRx 7,040,318 shares of our common stock at $0.007 per share, which represented approximately 56% of our issued and outstanding shares of common stock.
On January 8, 2007, we entered into a letter agreement (“Reimbursement Agreement”) with CytRx under which we agreed to reimburse CytRx, following our initial funding, for all organizational and operational expenses (“Formation Expenses”) incurred by CytRx in connection with our formation, initial operations and funding. As of April 30, 2007, the date that CytRx contributed $17,000,000 to us in exchange for 3,273,292 shares of our common stock at approximately $5.19 per share, CytRx had advanced approximately $2,000,000 to us for which we were obligated to reimburse CytRx, and as such CytRx retained such amount from payment for the contribution as reimbursement for that advance. In addition, as part of the final settlement of the reimbursement agreement, it was agreed that we still owed CytRx $978,000 in excess of the original $2,000,000. The additional approximately $978,000 owed to CytRx was settled for 188,387 additional shares of our stock at approximately $5.19 per share, which was determined by negotiated terms set in the Reimbursement Agreement and does not necessarily reflect the fair market value of the shares.
On December 27, 2007, we entered into a letter agreement with CytRx under which we and CytRx agreed to a “fee-sharing” arrangement for expenses related to the preparation of the registration statement that included the Distribution and Award prospectuses, and our application for the listing of our common stock on the NASDAQ Capital Market. Pursuant to this agreement, we agreed to reimburse CytRx an amount equal to the sum of (i) $30,000 plus (ii) 50% of the total relevant fees and expenses paid by CytRx to certain financial services professionals, including BDO Seidman, LLP. The total amount of the expenses to be reimbursed to CytRx as of December 31, 2007 is approximately $207,000. Also under this agreement CytRx agreed to reimburse us 50% of the total relevant fees and expenses paid by us to our financial printer, our transfer agent and our legal counsel.


F-23


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
On February 15, 2007, we entered into a letter agreement with CytRx and certain of our current stockholders. Under the stockholders agreement, we agreed to grant to CytRx preemptive rights to acquire any new securities, as defined therein, that we propose to sell or issue so that CytRx may maintain its percentage ownership of us. The preemptive rights will become effective if CytRx owns at any time less than 50% of our outstanding shares of common stock, and will expire on January 8, 2012 or such earlier time at which CytRx owns less than 10% of our outstanding common stock. Under this letter agreement, CytRx also undertakes to vote its shares of our stock in the election of our directors and dispose of their shares of our stock in accordance with the terms of its letter agreement with UMMS described above. CytRx has further agreed in this letter agreement to approve of actions that may be adopted and recommended by our board of directors to facilitate any future financing.
On April 30, 2007, we entered into a Registration Rights Agreement with CytRx. Under the Registration Rights Agreement, we agreed, with certain exceptions, that at any time after our common stock is registered under the Exchange Act, if CytRx shall so request, to use best efforts to cause all of our shares issued to CytRx pursuant to the Contribution Agreement to be registered under the Securities Act. All expenses incurred in connection with any such registration will be borne by us.
One of the members of our Board of Directors is the President, Chief Executive Officer and a member of the Board of Directors for CytRx.
Our current President and Chief Executive Officer (“CEO”), prior to his employment by the Company, was a consultant to RXi from August 2006 till the date of his employment. This consulting contract resulted in payments to the CEO’s consulting firm of approximately $229,000, of which $154,000 was recorded in the first nine months ended September 30, 2007 and $75,000 was recorded in the year ended December 31, 2006, in consulting fees and reimbursement in the accompanying Successor and Predecessor’s financial statements. As the CEO is the sole owner of the consulting firm, the approximate dollar value of his interest in this consulting contract is also approximately $229,000.
Our former Chief Financial Officer, prior to his employment by the Company, was a consultant to CytRx, working on RXi related matters from August 2006 through April 2007. This consultancy resulted in payments to the former CFO of approximately $98,000 in consulting fees and reimbursement of which $63,000 was recorded in the year ended December 31, 2007, and $35,000 was recorded in the year ended December 31, 2006, in the accompanying Successor and Predecessor’s financial statements.
The Chairman of our board of directors is a partner with TroyGould PC which has represented CytRx since 2003. Payments by CytRx to TroyGould PC for its representation of CytRx on RXi related matters and recorded in the accompanying Successor and Predecessor’s financial statements for the twelve months ended December 31, 2007, 2006, and 2005 were $129,000, $18,000, and $3,000, respectively.
On February 26, 2007, we entered into Scientific Advisory Board Agreements (the “SAB Agreements”), with four of our founders. At the time of the execution of the SAB Agreements, each of the founders were beneficial owners of more than five percent of our outstanding stock. Pursuant to the SAB Agreements, on May 23, 2007, we granted to each of the founders a stock option under the 2007 Plan to purchase 52,832 shares of our common stock. In addition, under the SAB Agreements, we will grant each of the founders a stock option under the 2007 Plan to purchase 52,832 shares of our common stock on February 26, 2008, February 26, 2009 and February 26, 2010 with a per share exercise price equal to the closing price of such stock on the public market on the date of grant unless a founder terminates a SAB Agreement without good reason (as defined) or we terminate a SAB Agreement with cause (as defined) in which case no further option grants will be made to the founder. If our common stock is not publicly available on the dates specified above, our Board of Directors will grant the stock options to the founders at the first scheduled board meeting after such date and the per share exercise price of the options will be determined in good faith by our Board


F-24


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
of Directors. All options granted pursuant to the SAB Agreements are fully vested on the date of grant and have a term of ten years. The fair value of stock options under the SAB Agreement for each founder is approximately $175,000 which was estimated using the Black-Scholes option-pricing model, based on the following assumptions. Due to the fact that we have no history of stock trading, our expected stock-price volatility assumption is based on a combination of implied volatilities of similar entities whose share or option prices are publicly traded. We used a weighted-average expected stock price volatility of 108.7%. The expected life assumption is based on a simplified method provided for under SAB 107, which averages the contractual term of the Company’s options (10 years) with the ordinary vesting term (immediately). The dividend yield of zero is based on the fact that we have no present intention to pay cash dividends. The risk free rate of 4.51% used for each grant is equal to the zero coupon rate in effect at the time of the grant for instruments with similar expected life. Included in the accompanying financial statements for RXi for the year ended December 31, 2007, is $701,930 of expense related to this grant of these stock options.
Additionally, pursuant to a letter agreement between us and each founder dated as of April 30, 2007 (“SAB Letters”), in further consideration of the services to be rendered by the founders under the SAB Agreements, we granted additional stock options on May 23, 2007 under the 2007 Plan to each of the founders to purchase 26,416 shares of our common stock. Unless a founder terminates a SAB Agreement without good reason (as defined) or we terminate a SAB Agreement with cause (as defined), the options granted pursuant to the SAB Letters will fully vest from and after April 29, 2012 and will have a term of ten years from the date of grant. The fair market value of stock options under the SAB Agreement for each founder is approximately $96,000, which was estimated using the Black-Scholes option-pricing model, based on the following assumptions. Due to the fact that we have no history of stock trading, our expected stock price volatility assumption is based on a combination of implied volatilities of similar entities whose share or option prices are publicly traded. We used a weight-average expected stock-price volatility of 108.7%. The expected life assumption is based on a simplified method provided for under SAB 107, which averages the contractual term of the Company’s options (10 years) with the ordinary vesting term (immediately). The dividend yield of zero is based on the fact that we have no present intention to pay cash dividends. The risk free rate of 4.55% used for each grant is equal to the zero coupon rate in effect at the time of the grant for instruments with similar expected life. Included in the accompanying financial statements for RXi for the year ended December 31, 2007, is $38,370 of expense related to these stock options.
14.  Employee Benefit Plan
RXi sponsors a 401(k) retirement savings plan (the “Plan”). Participation in the Plan is available to full-time employees who meet eligibility requirements. Eligible employees may defer a portion of their salary as defined by Internal Revenue Service regulations. We may make matching contributions on behalf of all participants in the 401(k) Plan in an amount determined by our Board of Directors. We may also make additional discretionary profit sharing contributions in amounts as determined by the board of directors, subject to statutory limitations. Matching and profit-sharing contributions, if any, are subject to a vesting schedule; all other contributions are at all times fully vested. We intend the 401(k) Plan, and the accompanying trust, to qualify under Sections 401(k) and 501 of the Internal Revenue Code so that contributions by employees to the 401(k) Plan, and income earned (if any) on plan contributions, are not taxable to employees until withdrawn from the 401(k) Plan, and so that we will be able to deduct our contributions, if any, when made. The trustee under the 401(k) Plan, at the direction of each participant, invests the assets of the 401(k) Plan in any of a number of investment options. To date, the Company has not made any matching contributions.
15.  Subsequent Events
On April 18, 2008, we granted options to purchase 25,000 shares of common stock to each non-employee member of our board of directors. These options had an exercise price of $7.50 per share, which represents


F-25


RXi PHARMACEUTICALS CORPORATION
NOTES TO FINANCIAL STATEMENTS — (Continued)
(A Development Stage Company)
our closing stock price on that date. Each of these options vest over a nine month period and expire no later than 10 years from the grant date.
On April 18, 2008, we granted options to purchase 240,780 shares of common stock to employees and consultants. These options had an exercise price of $7.50 per share, which represents our closing stock price on that date. Each of these options vest quarterly over a four year period and expire no later than 10 years from the grant date.
On April 30, 2008, we granted options to purchase 211,328 shares of common stock to the four members of our Scientific Advisory Board. These options had an exercise price of $7.01 per share, which represents our closing stock price on that date. Each of these options was fully vested on the date of grant and expire no later than 10 years from the grant date.
In April 2008, we entered into a lease obligation for certain laboratory equipment in the amount of $35,000. The term of the lease is for two years at an interest rate of 0%. The lease includes a purchase option of $1 at the end of the lease term and as a result, will be accounted for as fixed assets in our financial statements.
On June 24, 2008, we entered into a Securities Purchase Agreement pursuant to which we issued and sold to certain investors, including affiliates of Fidelity Investments, an aggregate of 1,073,299 shares of our common stock in a private placement at a price of $8.12 per share. We agreed to file a registration statement covering the resale of all shares issued in the private placement, with all expenses incurred in connection with such registration to be borne by us.
In December, 2006, the Financial Accounting Standard Board issued FASB Staff Position (FSP)EITF 00-19-2 “Accounting for Registration Payment Arrangements.” This FSP addresses an issuer’s accounting for registration payment arrangements and specifies that the contingent obligation to make future payments under a registration payment arrangement, whether issued as a separate agreement or included as a provision of a financial instrument or other agreement, should be separately recognized and measured in accordance with FASB Statement No. 5, “Accounting for Contingencies.” The application of this FSP is effective immediately for registration payment arrangements and the financial instruments subject to those arrangements that are entered into or modified subsequent to the date of the issuance of this FSP (December 21, 2006) and continue to be outstanding. Additionally, it is effective for financial statements issued for fiscal years beginning after December 15, 2006, and interim periods within those fiscal years. This pronouncement has no impact on the securities issued on June 24, 2008.
On July 18, 2008, we granted options to purchase 32,000 shares of common stock to employees and consultants. These options had an exercise price of $7.40 per share, which represents our closing stock price on that date. Each of these options vest quarterly over a four year period and expire no later than 10 years from the grant date.
On July 18, 2008, our stockholders approved an amendment to our 2007 Plan to increase the shares of common stock that are issuable to 3,750,000.


F-26


1,103,299 Shares of
RXi Pharmaceuticals Corporation
Common Stock
PROSPECTUS
Until           (25 days after the date of this prospectus), all dealers that effect transactions in these securities may be required to deliver this prospectus.


PART II
Information not required in prospectus
Item 13.Other expenses of issuance and distribution
The following table sets forth allthe expenses payableto be incurred in connection with registration of the securities for resaleoffering described in this Registration Statement, other than underwriting discounts and commissions, all which will be paid by the Selling Stockholders.Registrant. All the amounts shown are estimates except the Securities and Exchange Commission, or SEC, registration fee. The Selling Stockholders will pay any underwriting discountsfee and commissions and expenses incurred by them in disposing of the shares. We will bear all other costs, fees and expenses listed below incurred in effecting the issuance and registration of the shares covered by this prospectus.
     
  Total 
 
SEC registration fee $308 
Printing expenses $  
Legal fees and expenses $  
Accounting fees and expenses $  
Registrar fees and expenses $  
Miscellaneous $  
Total $ 
Financial Industry Regulatory Authority, Inc., filing fee.

   Amount 
Securities and Exchange Commission registration fee $5,854 
Financial Industry Regulatory Authority, Inc. filing fee   7,745 
Accountant’s fees and expenses  75,000 
Legal fees and expenses  265,000 
Transfer agent’s fees and expenses  20,000 
Printing and engraving expenses  100,000 
Miscellaneous  6,401 
     
Total expenses $480,000 

Item 14.Indemnification of officersDirectors and directorsOfficers.

As permitted by Section 145102 of the Delaware General Corporation Law, provideswe have adopted provisions in our amended and restated certificate of incorporation and amended and restated bylaws, each as amended, which limit or eliminate the personal liability of our directors for a breach of their fiduciary duty of care as a director. The duty of care generally requires that, a corporation may indemnify any current or former director, officer or employee or other individual against expenses, judgments, fines and amounts paid in settlement in connection with civil, criminal, administrative or investigative actions or proceedings, other than a derivative action by or in the rightwhen acting on behalf of the corporation, if the director, officer, employee or other individual acted in good faith and in a manner he or shedirectors exercise an informed business judgment based on all material information reasonably believedavailable to be in or not opposed to the best interests of the corporation, and, with respect to any criminal action or proceeding, if he or she had no reasonable cause to believe his or her conduct was unlawful. A similar standard is applicable in the case of derivative actions, except that indemnification only extends to expenses incurred in connection with the defense or settlement of such actions, and the statute requires court approval before there can be any indemnification where the person seeking indemnification has been found liable to the corporation. The statute provides that it is not exclusive of other indemnification that may be granted by a corporation’s by-laws, disinterested director vote, stockholder vote, agreement or otherwise.

Our certificate of incorporation provides that each person who was or is made or is threatened to be made a party to any action or proceeding by reason of the fact that such person, or a person of whom such person is the legal representative, is or wasthem. Consequently, a director or officer of us or is or was serving at our request as a director, officer, employee or agent of another corporation or of a partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans, will be indemnified and held harmless by us to the fullest extent authorized by the Delaware General Corporation Law, as the same exists or may hereafter be amended. Such rights are not exclusive of any other right which any person may have or thereafter acquire under any statute, provision of the certificate, by-law, agreement, vote of stockholders or disinterested directors or otherwise. Our certificate of incorporation also specifically authorizes us to maintain insurance and to grant similar indemnification rights to our employees or agents.
We have provided, consistent with the Delaware General Corporation Law, in our certificate of incorporation that a director of the corporation shall not be personally liable to the corporationus or itsour stockholders for monetary damages for breach of fiduciary duty as a director, except for liability for:

• ·any breach of the director’s duty of loyalty to the corporationus or its stockholders,our stockholders;

• ·actsany act or omissionsomission not in good faith or which involvethat involves intentional misconduct or a knowing violation of law,law;


II-1


·
• payments of unlawful dividends orany act related to unlawful stock repurchases, or redemptions or other distributions or payment of dividends; or

• ·any transaction from which the director derived an improper personal benefit.
Neither

These limitations of liability do not affect the amendment nor repealavailability of equitable remedies such provision will eliminateas injunctive relief or reducerescission. Our amended and restated certificate of incorporation also authorizes us to indemnify our officers, directors and other agents to the effectfullest extent permitted under Delaware law.

As permitted by Section 145 of such provisionthe Delaware General Corporation Law, our amended and restated bylaws, as amended, provide that:

·we may indemnify our directors, officers and employees to the fullest extent permitted by the Delaware General Corporation Law, subject to limited exceptions;

·we may advance expenses to our directors, officers and employees in connection with a legal proceeding to the fullest extent permitted by the Delaware General Corporation Law, subject to limited exceptions; and

·the rights provided in our bylaws are not exclusive.

Our amended and restated certificate of incorporation and bylaws, each as amended, which are filed as Exhibits 3.1 and 3.3, provide for the indemnification provisions described above and elsewhere herein. We have entered into separate indemnification agreements with our directors and officers that may be broader than the specific indemnification provisions contained in respectthe Delaware General Corporation Law. These indemnification agreements generally require us, among other things, to indemnify our officers and directors against liabilities that may arise by reason of their status or service as directors or officers, other than liabilities arising from willful misconduct. These indemnification agreements also generally require us to advance any expenses incurred by the directors or officers as a result of any matter occurring,proceeding against them as to which they could be indemnified. In addition, 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 in some circumstances. These indemnification provisions and the indemnification agreements may be sufficiently broad to permit indemnification of our officers and directors for liabilities, including reimbursement of expenses incurred, arising under the Securities Act.

II-1

We have entered into indemnification agreements with our directors and executive officers, in addition to the indemnification provided for in our amended and restated certificate of incorporation and amended and restated bylaws, and intend to enter into indemnification agreements with any new directors and executive officers in the future.

We have purchased and currently intend to maintain insurance on behalf of each and every person who is or was a director or officer of our company 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.

Item 15.Recent Sales of Unregistered Securities.

Since March 31, 2016, the registrant has issued unregistered securities to the persons, as described below. None of these transactions involved any underwriters, underwriting discounts or commissions, except as specified below, or any cause of action, suit or claimpublic offering, and the registrant believes that, but for such provision, would accrue or arise prior to such amendment or repeal.

Item 15.Recent sales of unregistered securities
Setexcept as set forth below, is information regarding shares of common stock and preferred stock issued, and options and warrants granted, by us withineach transaction was exempt from the past three years. Also included is the consideration, if any, received by us for such shares, options and warrants and information relating to the sectionregistration requirements of the Securities Act or rule of the SEC under which exemption from registration was claimed.
Common Stock
On April 3, 2006, the following transactions took place: (i) CytRx contributed $500 in exchange for approximately 356,201 shares1933 by virtue of our common stock; and (ii) each of Tariq Rana, Ph.D., Gregory Hannon, Ph.D., Michael Czech, Ph.D. and Craig C. Mello, Ph.D. each contributed $445 in exchange for 317,019 shares of our common stock. These transactions were exempt from registration under the Securities Act pursuant to Section 4(2) of the Securities Act, which exempts private issuances of securities in which the securities are not offered or advertised to the general public.
On January 8, 2007, CytRx assigned and contributed to us substantially all of its RNAi-related technologies and assets and we assumed primary responsibility for all future payments to UMMS and other obligations under the contributed licenses and assets in exchange for our issuance to CytRx 7,040,318 shares of our common stock, with a value of approximately $17.2 million. This transaction was exempt from registration under the Securities Act pursuant to Rule 506 ofSection 3(a)(10) thereof and/or Regulation D a safe harbor for private placement offeringsor Regulation S promulgated under Section 4(2) of the Securities Act. The safe harbor was available for the issuance under Regulation D because of CytRx’s qualification as an accredited investor (as defined in the Securities Act).
On January 10, 2007, we sold a total of 462,112 shares of our common stock to UMMS in exchange for certain licensesthereunder. All recipients had adequate access, though their relationships with an aggregate valuation equal to $2.3 million. These transactions were exempt from registration under the Securities Act pursuant to Rule 506 of Regulation D, a safe harbor for private placement offerings promulgated under Section 4(2) of the Securities Act. The safe harbor was available for the issuance under Regulation D because of UMMS’s qualification as an accredited investor (as defined in the Securities Act).
On April 30, 2007, CytRx contributed funds in the amount of $17.0 million in exchange for 3,273,292 shares of our common stock and the cancellation of our account payable to CytRx in the amount of approximately $2.0 million. This transaction was exempt from registration under the Securities Act pursuant to Rule 506 of Regulation D, a safe harbor for private placement offerings promulgated under Section 4(2) of the Securities Act. The safe harbor was available for the issuance under Regulation D because of CytRx’s qualification as an accredited investor (as defined in the Securities Act).
Pursuant to a common stock offering approved by the Board of Directors on May 23, 2007, Mark J. Ahn, Ph.D., Stephen S. Galliker and Sanford J. Hillsberg each entered into a Subscription Agreement with us and each subscribed for and purchased 10,000 shares of our common stock for the purchase price of $5.00 per share. These transactions were exempt from registration under the Securities Act pursuant to Section 4(2) of the Securities Act, which exempts private issuances of securities in which the securities are not offered or advertised to the general public.
In September 2007, the actual expenses incurred by CytRx were finally determined to be approximately $2.9 million, and on September 25, 2007, we issued to CytRx 188,387 shares of our common stock as reimbursement of expenses incurred in excess of the $2.0 million account payable cancelled by CytRx on


II-2


April 30, 2007 (described above), pursuant to terms set forth in that certain Contribution Agreement between us and CytRx, dated April 30, 2007. This transaction was exempt from registration under the Securities Act pursuant to Rule 506 of Regulation D, a safe harbor for private placement offerings promulgated under Section 4(2) of the Securities Act. The safe harbor was available for the issuance under Regulation D because of CytRx’s qualification as an accredited investor (as defined in the Securities Act).
On June 24, 2008, we entered into a Securities Purchase Agreement pursuant to which we issued and sold to certain investors an aggregate of 1,073,299 shares of the Company’s common stock in a private placement at a price of $8.12 per share, resulting in aggregate gross proceeds to us of approximately $8.7 million. The securities were issued in reliance upon the exemptions from the registration under the Securities Act provided by Regulation D and Section 4(2). The securities were issued directly by the registrant, and did not involve a public offering or general solicitation. The investors in the private placement are “Accredited Investors” as that term is defined in Rule 501 of Regulation D.
In December, 2006, the Financial Accounting Standard Board issued FASB Staff Position (FSP)EITF 00-19-2 “Accounting for Registration Payment Arrangements.” This FSP addresses an issuer’s accounting for registration payment arrangements and specifies that the contingent obligation to make future payments under a registration payment arrangement, whether issued as a separate agreement or included as a provision of a financial instrument or other agreement, should be separately recognized and measured in accordance with FASB Statement No. 5, “Accounting for Contingencies.” The application of this FSP is effective immediately for registration payment arrangements and the financial instruments subject to those arrangements that are entered into or modified subsequent to the date of the issuance of this FSP (December 21, 2006) and continue to be outstanding. Additionally, it is effective for financial statements issued for fiscal years beginning after December 15, 2006, and interim periods within those fiscal years. This pronouncement has no impact on the securities issued on June 24, 2008.
Options
On May 23, 2007, we issued to employees, directors and SAB members 1,176,797 shares of common stock upon the exercise of stock options at a price of $5.00 per share under our 2007 Incentive Plan. The issuance of stock options and the common stock issuable upon the exercise of such options were issued pursuant to a written compensatory plan in reliance on the exemption provided by Rule 701 promulgated under the Securities Act. All recipients either received adequate information about us or had access, through employment or other relationships, to such information.
On July 11, 2007, we issued to an employee 105,561 shares of common stock upon the exercise of stock options at a price of $5.00 per share under our 2007 Incentive Plan. The issuance of such stock options and the common stock issuable upon the exercise of such options were issued pursuant to a written compensatory plan in reliance on the exemption provided by Rule 701 promulgated under the Securities Act. Mr. Samarsky received adequate information about us or had access, through employment or other relationships, to such information.
On August 16, 2007, we issued to certain employees and SAB members 68,335 shares of common stock upon the exercise of stock options at a price of $5.00 per share under our 2007 Incentive Plan. The issuance of stock options and the common stock issuable upon the exercise of such options were issued pursuant to a written compensatory plan in reliance on the exemption provided by Rule 701 promulgated under the Securities Act. All recipients either received adequate information about us or had access, through employment or other relationships, to such information.
On October 18, 2007, we issued to certain employees, 146,000 shares of common stock upon the exercise of stock options at a price of $5.00 per share under our 2007 Incentive Plan. The issuance of stock options and the common stock issuable upon the exercise of such options were issued pursuant to a written compensatory plan in reliance on the exemption provided by Rule 701 promulgated under the Securities Act. All recipients either received adequate information about us or had access, through employment or other relationships, to such information.


II-3

registrant.


On January 10, 2008 we issued to non-employees directors 100,000 shares of common stock upon the exercise of stock options at a price of $5.0 per share under our 2007 Incentive Plan. The issuance of stock options and the common stock issuable upon the exercise of such options were issued pursuant to a written compensatory plan in reliance on the exemption provided by Rule 701 promulgated under the Securities Act. All recipients either received adequate information about us or had access, through employment or other relationships, to such information.
On April 18, 2008 we issued to employees and directors 340,780 shares of common stock upon the exercise of stock options at a price of $7.50 per share under our 2007 Incentive Plan. The issuance of stock options and the common stock issuable upon the exercise of such options were issued pursuant to a written compensatory plan in reliance on the exemption provided by Rule 701 promulgated under the Securities Act. All recipients either received adequate information about us or had access, through employment or other relationships, to such information.
On April 30, 2008 we issued to SAB members 211,328 shares of common stock upon the exercise of stock options at a price of $7.01 per share under our 2007 Incentive Plan. The issuance of stock options and the common stock issuable upon the exercise of such options were issued pursuant to a written compensatory plan in reliance on the exemption provided by Rule 701 promulgated under the Securities Act. All recipients either received adequate information about us or had access, through employment or other relationships, to such information.


II-4


Item 16.a)ExhibitsIn July 2016, the registrant entered into a Securities Purchase Agreement with certain investors providing for the issuance and financial statement schedulessale of an aggregate of approximately $12.6 million of registered and unregistered securities, namely an aggregate of 1.4 million shares of common stock at $9.00 per share in a registered direct offering and warrants to purchase up to 700,000 shares of common stock with an exercise price of $13.00 per share in a concurrent private placement, which warrants were initially exercisable six months and one day following issuance and had a term of five years from the date of issuance;

(a)  b)ExhibitsIn July 2016, the registrant issued 156,250 shares of its common stock to five parties in a settlement;
     
Exhibit
  
Number
 
Description
 
 2.1 Contribution Agreement between CytRx Corporation and RXi Pharmaceuticals Corporation, dated January 8, 2007(1)
 2.2 Contribution Agreement between CytRx Corporation and RXi Pharmaceuticals, dated April 30, 2007(1)
 2.3 Reimbursement Agreement between CytRx Corporation and RXi Pharmaceuticals, dated January 8, 2007(1)
 3.1 Form of Amended and Restated Certificate of Incorporation of RXi Pharmaceuticals Corporation(1)
 3.2 Form of Amended and Restated By-laws of RXi Pharmaceuticals Corporation(1)
 4.1 Specimen common stock certificate(3)
 4.2 Stockholder Agreement between CytRx Corporation, RXi Pharmaceuticals Corporation, the other Stockholders and the Scientific Advisory Board Members, dated February 23, 2007(1)
 4.3 Exhibit A to Contribution Agreement — Registration Rights Terms between CytRx Corporation and RXi Pharmaceuticals Corporation, dated April 30, 2007(1)
 4.4 Annex I to form of Subscription Agreement — Registration Rights Terms between RXi Pharmaceuticals and Stephen Galliker, Mark Ahn and Sanford Hillsberg(1)
 4.5 Securities Purchase Agreement between RXi Pharmaceuticals Corporation and Certain Investors, dated June 24, 2008(5)
 4.6 Amendment to Stockholder Agreement, dated July 28, 2008(7)
 4.7 Amendment to Exhibit A to Contribution Agreement, dated July 28, 2008(7)
 5.1 Opinion of Ropes & Gray, LLP, counsel to the Registrant, with respect to the legality of securities being registered(7)
 10.1 Voting Agreement between CytRx Corporation and the University of Massachusetts Medical School, dated January 10, 2007(1)
 10.2 License Agreement between Cold Spring Harbor Laboratory and RXi Pharmaceuticals Corporation, dated March 15, 2007+(2)
 10.3 Invention Disclosure Agreement between the University of Massachusetts Medical School and RXi Pharmaceuticals Corporation, dated January 8, 2007(2)
 10.4 Exclusive License Agreement (No.: UMMC06-21-01) between the University of Massachusetts and RXi Pharmaceuticals Corporation, dated January 10, 2007+(2)
 10.5 Exclusive License Agreement (No.: UMMC03-68-02) between the University of Massachusetts and RXi Pharmaceuticals Corporation, dated January 10, 2007+(2)
 10.6 Exclusive License Agreement (No.: UMMC03-75-01) between the University of Massachusetts and RXi Pharmaceuticals Corporation, dated January 10, 2007+(2)
 10.7 Non-Exclusive License Agreement (No.: UMMC06-08-03) between the University of Massachusetts and RXi Pharmaceuticals Corporation, dated January 10, 2007+(2)
 10.8 Non-Exclusive License Agreement, between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number01-36, dated April 15, 2003, as amended February 1, 2004+(2)
 10.9 Exclusive License Agreement between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number02-01, dated April 15, 2003, as amended March 18, 2004 and September 10, 2004+(2)
 10.10 Amended and Restated Exclusive License Agreement between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number03-05,00-37,01-31,03-134,93-09 and02-38, dated September 15, 2003, as amended September 17, 2003 and February 1, 2004+(2)
 10.11 Exclusive License Agreement between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number03-17, dated April 15, 2003, as amended January 7, 2004 and February 1, 2004+(2)


II-5


     
Exhibit
  
Number
 
Description
 
 10.12 Exclusive License Agreement between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number03-60, dated April 15, 2003 as amended February 1, 2004+(2)
 10.13 Co-Exclusive License Agreement between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number03-33, and all amendments thereto, dated May 18, 2006+(2)
 10.14 License Agreement between CytRx Corporation, Imperial College Innovations Limited and Imperial College of Science and Technology, dated May 20, 2004+(2)
 10.15 Employment Agreement between RXi Pharmaceuticals Corporation and Tod Woolf, Ph.D., dated February 22, 2007*(1)
 10.16 Employment Agreement between RXi Pharmaceuticals Corporation and James Warren, dated April 30, 2007*(1)
 10.17 Employment Agreement between RXi Pharmaceuticals Corporation and Pamela Pavco, dated March 7, 2007*(1)
 10.18 Employment Agreement between RXi Pharmaceuticals Corporation and Dmitry Samarsky, dated June 24, 2007*(1)
 10.19 Employment Agreement between RXi Pharmaceuticals Corporation and Stephen J. DiPalma, dated August 28, 2007*(1)
 10.20 RXi Pharmaceuticals Corporation’s 2007 Incentive Plan, as amended*(6)
 10.21 Form of Incentive Stock Option*(1)
 10.22 Form of Non-qualified Stock Option*(1)
 10.23 Lease between RXi Pharmaceuticals Corporation and Newgate Properties, LLC for One Gateway Place, Worcester, Massachusetts, 01605, dated September 25, 2007(3)
 10.24 Form of Subscription Agreement between RXi Pharmaceuticals Corporation and each of Mark K. Ahn, Ph.D., Stephen S. Galliker and Sanford J. Hillsberg(3)
 10.25 Scientific Advisory Board Agreement between RXi Pharmaceuticals Corporation and Tariq Rana, Ph.D., dated February 26, 2007 and corresponding Letter Agreement dated April 30, 2007(3)
 10.26 Scientific Advisory Board Agreement between RXi Pharmaceuticals Corporation and Gregory Hannon, Ph.D., dated February 26, 2007 and corresponding Letter Agreement dated April 30, 2007(3)
 10.27 Scientific Advisory Board Agreement between RXi Pharmaceuticals Corporation and Michael Czech, Ph.D., dated February 26, 2007 and corresponding Letter Agreement dated April 30, 2007(3)
 10.28 Scientific Advisory Board Agreement between RXi Pharmaceuticals Corporation and Craig C. Mello, Ph.D., dated February 26, 2007 and corresponding Letter Agreement dated April 30, 2007(3)
 10.29 Letter Agreement between CytRx Corporation and RXi Pharmaceuticals Corporation, dated December 27, 2007(3)
 10.30 Patent License Agreement between RXi Pharmaceuticals Corporation and Invitrogen IP Holdings, Inc. dated November 1, 2007(4)
 10.31 Placement Agency Agreement between Jefferies & Company, Inc., Natixis Bleichroeder Inc., Broadpoint Securities Group, Inc.,Griffin Securities, Inc. and RXi Pharmaceuticals Corporation dated June 24, 2008(5)
 23.1 Consent of BDO Seidman, LLP, Independent Registered Public Accounting Firm(7)
 23.2 Consent of Ropes & Gray LLP (included in Exhibit 5.1)(7)
 24.1 Power of Attorney (included onpage II-9)(8)
c)
(1)Previously filedIn July 2016, the registrant issued 24,002 shares of its common stock as an Exhibit topart of the Company’s Registration Statement onForm S-1 filed on October 30, 2007 (FileNo. 333-147009) and incorporated by reference herein.
(2)Previously filed as an Exhibit to Amendment No. 1 to the Company’s Registration Statement onForm S-1 filed on November 19, 2007 (FileNo. 333-147009) and incorporated by reference herein.settlement.

II-6


d)
(3)Previously filedIn May 2016, the registrant sold to JGB a 6.375% original issue discount, a $25,530,000 senior secured debenture and warrants to purchase up to 3,334 shares of its common stock, for approximately $23.4 million of net proceeds. The warrants included a Series A warrant to purchase 1,667 shares at $906.00 per share, which had a term of 5 years; and a Series B warrant to purchase 1,667 shares at $258.00 per share. Armentum Partners, LLC acted as an Exhibitthe placement agent in the offering and paid a fee equal to Amendment No. 2 to2% of the Company’s Registration Statement onForm S-1 filed on January 20, 2008 (FileNo. 333-147009) and incorporated by reference herein.
(4)Previously filed as an Exhibit to Amendment No. 3 tofunds received from the Company’s Registration Statement onForm S-1 filed on February 1, 2008 (FileNo. 333-147009) and incorporated by reference herein.
(5)Previously filed as an Exhibit toForm 8-K as filed on June 26, 2008 and incorporated by reference herein.
(6)Previously files as an Exhibit toForm 8-K as filed on July 24, 2008 and incorporated by reference herein.
(7)Filed herewith.sale of the initial debenture.

e)
(8)Previously filed.In August 2016, the registrant and JGB amended and restated the senior secured debenture, and reduced the exercise price of the Series A warrant from $906.00 per share to $258.00 per share (as may be further adjusted appropriately for stock splits, combinations or similar events), and waived and modified certain terms subsequently in December 2016, April 2017, further amended the terms in May 2017.

f)
 * IndicatesIn July 2017, the registrant entered into a management or compensatory plan or arrangement.binding settlement term sheet, pursuant to which the registrant agreed to pay a portion of the settlement agreement ($1,250,000) in unrestricted shares of its common stock, which valuation will be based on the volume-weighted average closing price for the 20 trading days immediately preceding the day before the transfer of the settlement stock to the settlement fund pursuant to the terms and conditions of the settlement. Such shares were issued in June 2018.

g)In February-May 2018, the registrant issued an aggregate of 54,613 shares of its common stock in exchange for the surrender and cancellation of warrants to acquire 121,667 shares of its common stock, and $1.0 million in convertible promissory notes in exchange for the surrender and cancellation of warrants to acquire 412,666 shares of its common stock, pursuant to individual agreements with nine accredited investors; the cancelled warrants were issued to the holders thereof in a February 2017 registered offering. In April 2018, $0.8 million of outstanding principal and accrued interest of the convertible promissory notes was converted into 118,644 shares of common stock.

h)In March 2018, the registrant entered into a purchase agreement providing for the sale and issuance of an aggregate of 10,700 shares of its 20% non-voting Series A Convertible Preferred Stock (or Series A) and warrants to acquire an aggregate of 1,383,631 shares of its common stock to seven accredited investors. The securities were issued in two tranches (in March 2018 and May 2018), for aggregate gross proceeds of $10.7 million of cash. Cantor Fitzgerald & Co. acted as placement agent and received a fee equal to 7% of the gross proceeds received from U.S-based investors, as well as reimbursement for its actual, out-of-pocket accountable expenses (including legal fees and expenses) incurred in connection with the private placement. In May 2018, 2,898 shares of Series A were converted into 499,683 shares of common stock.

II-2

Item 16.Exhibits and Financial Statement Schedules.

Exhibit

Number

DescriptionFormExhibitFiling Date
1.1*Form of Underwriting Agreement   
2.1^Agreement and Plan of Merger, dated as of August  7, 2017, by and among the Registrant, Galena Bermuda Merger Sub, Ltd., Sellas Intermediate Holdings I, Inc., Sellas Intermediate Holdings II, Inc. and SELLAS Life Sciences Group Ltd, as amended (included as Annex  A to the proxy statement/prospectus/consent solicitation statement)8-K2.1August 8, 2017
3.1Composite Amended and Restated Certificate of Incorporation of the Registrant (formerly, Galena Biopharma, Inc.), amended as of December 27, 201710-K3.1April 13, 2018
3.2Certificate of Designation of Preferences, Rights and Limitations of Series A Convertible Preferred Stock8-K3.1March 12, 2018
3.3Amended and Restated By-Laws of the Registrant8-K3.3January 5, 2018
4.1Form of Common Stock Certificate10-K4.1April 13, 2018
4.2Form of Contingent Value Rights Agreement among the Registrant (formerly RXi Pharmaceuticals Corporation), Computershare Trust Company, N.A., Computershare Inc., and Robert E Kennedy, dated April 13, 20118-K10.1April 14, 2011
4.3First Amendment to Contingent Value Rights Agreement among the Registrant (formerly RXi Pharmaceuticals Corporation), Computershare Trust Company, N.A., Computershare Inc., and Robert E Kennedy, dated February 15, 201210-K10.2March 28, 2012
4.4Registration Rights Agreement dated May 10, 2016 between the Registrant and Purchasers10-Q10.3May 10, 2016
4.5Series A Common Stock Purchase Warrant assigned to JGB (Cayman) Newton Ltd. dated May 10, 201610-Q4.2May 10, 2016
4.6Series B Common Stock Purchase Warrant assigned to JGB (Cayman) Newton Ltd. dated May 10, 201610-Q4.3May 10, 2016
4.7Subsidiary Guarantee dated May 10, 2016 between the Registrant and JGB Collateral LLC10-Q10.2May 10, 2016
4.8Security Agreement dated May 10, 2016 between the Registrant and JGB Collateral LLC10-Q10.4May 10, 2016
4.9Amended and Restated 9% Original Issue Discount Senior Secured Debenture Due November 10, 2018, issued to JGB (Cayman) Newton Ltd. as of August 22, 20168-K4.1August 23, 2016
4.10Amendment Agreement, dated as of July 10, 2017, by and between JGB Cayman (Newton) Ltd. and the Registrant with respect to the 9% Original Issue Discount Senior Secured Convertible Debenture in the Original Issue Amount of $25,350,000 Issued and Sold to JGB Cayman (Newton) Ltd. by the Registrant8-K4.1July 11, 2017
4.11Consent, dated as of August 7, 2017, made by JGB (Cayman) Newton Ltd., in favor of the Registrant8-K10.3August 8, 2017
4.12Form of warrants granted on May 8, 2013 under the Loan and Security Agreement10-Q10.7May 9, 2013
4.13Form of Warrant Agreement by and among the Registrant, Computershare Inc. and Computershare Trust Company, N.A.8-K4.1September 18, 2013
4.14Warrant Agreement, dated as of March 18, 2015, by and among the Registrant, Computershare, Inc. and Computershare Trust Company, N.A.10-Q4.1August 6, 2015
4.15Form of Warrant Agreement by and among the Registrant, Computershare Inc. and Computershare Trust Company, N.A.8-K4.1January 7, 2016

II-3

Exhibit

Number

DescriptionFormExhibitFiling Date
4.16Form of Warrant, issued by the Registrant to the Investors on July 13, 20168-K4.1July 8, 2016
4.17Form of Warrant Agreement, including the Form of Warrant, issued by the Registrant to the Investors on February 13, 20178-K4.1February 10, 2017
4.23Warrant issued to EQC Private Markets SAC Fund Ltd – EQC Biotech Sely I Fund8-K10.5January 5, 2018
4.18Warrant Exchange Agreement by and between the Registrant and CVI Investments, Inc., dated February 6, 201810-K10.73April 13, 2018
4.19Promissory Note by and between the Registrant and CVI Investments, Inc., dated February 6, 201810-K10.74April 13, 2018
4.20Warrant Exchange Agreement by and between the Registrant and Anson Investments Master Fund LP, dated February 7, 201810-K10.75April 13, 2018
4.21Warrant Exchange Agreement by and between the Registrant, Sabby Healthcare Master Fund Ltd and Sabby Volatility Warrant Master Fund Ltd, dated February 8, 201810-K10.76April 13, 2018
4.22Warrant Exchange Agreement by and between the Registrant and Hudson Bay Master Fund Agreement, dated February 9, 201810-K10.77April 13, 2018
4.23Promissory Note by and between the Registrant and Hudson Bay Master Fund Agreement, dated February 9, 201810-K10.78April 13, 2018
4.24Warrant Exchange Agreement by and between the Registrant and Alto Opportunity Master Fund, SPC - Segregated Master Portfolio B, dated February 13, 201810-K10.79April 13, 2018
4.25Promissory Note by and between the Registrant and Alto Opportunity Master Fund, SPC - Segregated Master Portfolio B, dated February 13, 201810-K10.80April 13, 2018
4.26Warrant Exchange Agreement by and between the Registrant and Lincoln Park Capital LLC, dated February 14, 201810-K10.81April 13, 2018
4.27Warrant Exchange Agreement by and between the Registrant and Empery Asset Master, Ltd., dated February 21, 201810-K10.82April 13, 2018
4.28Warrant Exchange Agreement by and between the Registrant and Empery Tax Efficient, LP, dated February 21, 201810-K10.83April 13, 2018
4.29Warrant Exchange Agreement by and between the Registrant and Empery Tax Efficient II, LP, dated February 21, 201810-K10.84April 13, 2018
4.30Promissory Note by and between the Registrant and Empery Asset Master, Ltd., dated February 21, 201810-K10.85April 13, 2018
4.31Promissory Note by and between the Registrant and Empery Tax Efficient, LP, dated February 21, 201810-K10.86April 13, 2018
4.32Promissory Note by and between the Registrant and Empery Tax Efficient II, LP, dated February 21, 201810-K10.87April 13, 2018
4.33Warrant Agreement including form of accompanying Common Warrant as Exhibit B thereto, dated as of July 16, 2018, among the Registrant, Computershare, Inc., and Computershare Trust Company N.A.8-K10.1July 18, 2018
4.34Form of Pre-funded Warrant in connection with July 2018 public offering8-K10.2July 18, 2018
4.35Form of Warrant issued in exchange of Series A Preferred Stock in connection with July 2018 public offering8-K10.3July 18, 2018
4.36Warrant Exchange Agreement by and between the Registrant and Intracoastal Capital LLC dated May 25, 2018 (including as Exhibit A thereto, that certain Convertible Promissory Note by and between the Registrant and Intracoastal Capital LLC dated May 25, 2018)8-K10.1June 1, 2018

II-4

Exhibit

Number

DescriptionFormExhibitFiling Date
4.37Form of New Warrant issued in connection with Warrant Exercise Agreement dated March 6, 20198-K4.1March 6, 2019
4.38*Form of Pre-Funded Warrant   

4.39*

Form of Warrant Agreement, including Form of Common Warrant

   
5.1*Opinion of Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.   
9.1Securities Purchase Agreement dated March 7, 2018 by and between the Registrant and certain investors8-K10.1March 12, 2018
10.1The Registrant’s 2016 Incentive Plan effective as of July 14, 20168-K10.3August 22, 2016
10.2Form Incentive Stock Option granted under the Registrant’s 2016 Incentive Plan10-Q10.1August 8, 2015
10.3Form Nonstatutory Stock Option granted under the Registrant’s 2016 Incentive Plan10-Q10.2August 8, 2015
10.4SELLAS Life Sciences Group, Ltd Stock Incentive Plan #1S-4/A10.61October 30, 2017
10.5Form of Restricted Stock Unit Grant and Agreement under SELLAS Life Sciences Group Ltd Stock Incentive Plan #1S-4/A10.63October 30, 2017
10.62017 Equity Incentive Plan of the Registrant8-K10.10January 5, 2018
10.72017 Employee Stock Purchase Plan of the Registrant8-K10.11January 5, 2018
10.8Form of Stock Option Grant Notice and Option Agreement under the 2017 Equity Incentive Plan.8-K10.2March 19, 2018
10.9Form of Restricted Stock Unit Grant and Agreement under the 2017 Equity Incentive Plan.10-K10.9April 13, 2018
10.10Employment Agreement by and between SELLAS Life Sciences Group AG and Angelos Stergiou, effective September 1, 2016S-4/A10.53October 30, 2017
10.11Employment Agreement by and between SELLAS Life Sciences Group AG and Gregory Torre, effective September 1, 2016S-4/A10.54October 30, 2017
10.12Employment Agreement by and between SELLAS Life Sciences Group AG and Nicholas Sarlis, effective September 19, 2016S-4/A10.55October 30, 2017
10.13Employment Agreement by and between SELLAS Life Sciences Group Ltd and Aleksey Krylov, dated October 24, 2017S-4/A10.56October 30, 2017
10.14Retention Agreement Letter by and between SELLAS Life Sciences Group Ltd and Gregory Torre, dated July 31, 2017S-4/A10.57October 30, 2017
10.15Retention Agreement Letter by and between SELLAS Life Sciences Group Ltd and Nicholas Sarlis, dated August 2, 2017S-4/A10.58October 30, 2017
10.16Letter Employment Agreement by and between SELLAS Life Sciences Group, Inc. and Barbara Wood, dated March 14, 20188-K10.1March 19, 2018
10.17+Patent and Technology License Agreement, dated September 11, 2006, by and among the Board of Regents of the University of Texas System, the University of Texas M.D. Anderson Cancer Center, the Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., and Apthera, Inc. (formerly Advanced Peptide Therapeutics, Inc.)10-Q10.1August 15, 2011
10.18Amendment No. 1 to Patent and Technology License Agreement, dated December 21, 2007, by and among the Board of Regents of the University of Texas System, the University of Texas M.D. Anderson Cancer Center, the Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., and Apthera, Inc. (formerly Advanced Peptide Therapeutics, Inc.)10-Q10.2August 15, 2011
10.19Amendment No. 2 to Patent and Technology License Agreement, dated September 3, 2008, by and among the Board of Regents of the University of Texas System, the University of Texas M.D. Anderson Cancer Center, the Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., and Apthera, Inc. (formerly Advanced Peptide Therapeutics, Inc.)10-Q10.3August 15, 2011

II-5

Exhibit

Number

DescriptionFormExhibitFiling Date
10.20Amendment No. 3 to Patent and Technology License Agreement, dated July 8, 2009, by and among the Board of Regents of the University of Texas System, the University of Texas M.D. Anderson Cancer Center, the Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., and Apthera, Inc. (formerly Advanced Peptide Therapeutics, Inc.)10-Q10.4August 15, 2011
10.21+Amendment No. 4 to Patent and Technology License Agreement, dated February 11, 2010, by and among the Board of Regents of the University of Texas System, the University of Texas M.D. Anderson Cancer Center, the Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., and Apthera, Inc. (formerly Advanced Peptide Therapeutics, Inc.)10-Q10.5August 15, 2011
10.22+Amendment No. 5 to Patent and Technology License Agreement, dated January 10, 2011, by and among the Board of Regents of the University of Texas System, the University of Texas M.D. Anderson Cancer Center, the Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., and Apthera, Inc. (formerly Advanced Peptide Therapeutics, Inc.)10-Q10.6August 15, 2011
10.23Scientific Advisory Agreement between the Registrant (formerly Galena Biopharma, Inc.) and George E. Peoples, Ph.D., dated April 13, 201110-Q10.10August 15, 2011
10.24+Exclusive License Agreement, dated as of July 11, 2011, by and among The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., the Registrant (formerly Galena Biopharma, Inc.) and its wholly owned subsidiary, Apthera, Inc.10-Q10.12August 15, 2011
10.25+Exclusive License Agreement, dated as of September 16, 2011, by and among The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., The Board of Regents of the University of Texas System, The University of Texas M. D. Anderson Cancer Center and the Registrant (formerly Galena Biopharma, Inc.)8-K10.1September 21, 2011
10.26+License Agreement, effective as of April 30, 2009, between Kwangdong Pharmaceutical Co., Ltd. and Apthera, Inc.10-K10.45March 28, 2012
10.27Amendment No. 1 to License Agreement, dated as of January 13, 2012, by and among Apthera, Inc., Kwangdong Pharmaceutical Co., Ltd., and the Registrant10-K10.46March 28, 2012
10.28+License and Supply Agreement, effective December 3, 2012, by and between the Registrant and ABIC Marketing Limited, a subsidiary of Teva Pharmaceuticals10-K10.43March 12, 2013
10.29+License and Development Agreement, dated January 13, 2014, between the Registrant and Dr. Reddy’s Laboratories, Ltd.10-K10.36March 17, 2014
10.30+Exclusive License Agreement, dated as of December 20, 2013, between Mills Pharmaceuticals, LLC and BioVascular, Inc.10-K10.37March 17, 2014
10.31Amendment of the Exclusive License Agreement by and between Mills Pharmaceuticals, LLC and BioVascular, Inc.8-K10.1September 11, 2017
10.32License Agreement by and between SELLAS Life Sciences, Inc. and Madison Avenue Suites LLC, dated March 20, 2017S-4/A10.64October 30, 2017
10.33+Amended and Restated Exclusive License Agreement by and between SELLAS Life Sciences Group Ltd and Memorial Sloan Kettering Cancer Center, effective October 11, 2017S-4/A10.65October 30, 2017
10.34Form of Indemnity Agreement between the Registrant and each of its directors and executive officers8-K10.8January 5, 2018
10.35License Agreement made as of May 19, 2018 by and between the Registrant and 38th Street Suites LLC8-K10.1May 24, 2018
10.36Surrender Agreement made as of May 19, 2018 by and between the Registrant and Madison Avenue Suites LLC8-K10.2May 24, 2018

II-6

Exhibit

Number

DescriptionFormExhibitFiling Date
10.37Settlement Agreement between SELLAS Life Sciences Group, Inc. and individual named defendants, on the one hand, and JGB (Cayman) Newton, Ltd., JGB Collateral LLC, JGB Capital Offshore Ltd., JGB Partners L.P., and JGB Capital L.P., on the other hand, dated as of November 5, 20188-K10.1November 9, 2018
10.38Securities Purchase Agreement dated May 10, 2016 between the Registrant and Purchasers10-Q10.1May 10, 2016
10.39Amendment Agreement between the Registrant and JGB (Cayman) Newton Ltd. dated August 22, 2016.8-K10-1August 23, 2016
10.40Waiver dated December 14, 2016 to the Securities Purchase Agreement, dated as of May 10, 2016, by and between Registrant and JGB (Cayman) Newton Ltd.8-K10.3February 7, 2017
10.41Waiver dated April 1, 2017 to the Securities Purchase Agreement dated as of May 10, 2016 by and between the Registrant and JGB (Cayman) Newton Ltd.8-K10.1April 3, 2017
10.42Form of Voting Agreement by and between the Registrant and its named executive officers, Board of Directors and certain stockholders8-K10.2March 12, 2018
10.43Form of Warrant issued pursuant to that certain Securities Purchase Agreement dated March 7, 2018 by and between the Registrant and certain investors8-K4.1March 12, 2018
10.44Form of Warrant Exercise Agreement dated March 6, 20198-K10.1March 6, 2019
10.45Amendment Agreement dated May 1, 2017 between the Registrant and JGB (Cayman) Newton Ltd.8-K10.1May 2, 2017
14.1Code of Business Conduct and Ethics8-K14.1January 5, 2018
21.1Subsidiaries of the Registrant10-K21.1April 13, 2018
23.1*Consent of Moss Adams LLP, Independent Registered Public Accounting Firm   

23.2*

Consent of Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. (filed as Exhibit 5.1).

   
24.1Powers of Attorney (included on signature page hereto)   
101.INS**XBRL Instance Document.   
101.SCH**XBRL Taxonomy Extension Schema.   
101.CAL**XBRL Taxonomy Extension Calculation Linkbase.   
101.DEF**XBRL Taxonomy Extension Definition Linkbase.   
101.LAB**XBRL Taxonomy Extension Label Linkbase.   
101.PRE**XBRL Taxonomy Extension Presentation Linkbase.   

*Filed herewith
^The schedules and exhibits to this exhibit have been omitted pursuant to Item 601(b)(2) of Regulation S-K. A copy of any omitted schedule and/or exhibit will be furnished to the SEC upon request.
+Confidential treatment has been granted with respect to certain portions of this exhibit. Omitted portions have been filed separately with the SEC.
**In accordance with Rule 406T of Regulation S-T, the Interactive Data Files in Exhibit 101 are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Exchange Act of 1934, as amended, and otherwise are not subject to liability under these sections.

II-7

This exhibitItem 17.Undertakings.

The undersigned registrant hereby undertakes:

(1)To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i)To include any prospectus required by Section 10(a)(3) of the Securities Act;

(ii)To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in 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 separately with the Commission pursuant to an application for confidential treatment. The confidential portionsRule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20 percent change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the exhibit have been omitted and have been marked by an asterisk.effective registration statement;

(b)  (iii)Financial Statement SchedulesTo 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;
All financial statement schedules are omitted because they are

provided, however, that paragraphs (a)(1)(i), (ii), and (iii) of this section do not applicable, not required orapply if the information is indicated elsewhererequired to be included in the financial statements or the notes thereto.

Item 17.Undertakings
(a) The undersigned registrant hereby undertakes:
(1) To file, during any period in which offers or sales are being made, a post-effective amendment by those paragraphs is contained in reports filed with or furnished to this registration statement:
(i) To include any prospectus requiredthe Commission by the registrant pursuant to section 10(a)(3)13 or section 15(d) of the Securities Act;
(ii) To reflect in the prospectus any factsExchange Act of 1934 (15 U.S.C. 78m or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth78o(d)) that are incorporated by reference in 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 SEC 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 of 1933, each such post-effective amendment 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.
(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.
(4) That, for the purpose of determining liability under the Securities Act to any purchaser, 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 prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the registration


II-7


(2)That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment 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.

(3)To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(4)That, for the purpose of determining liability of the registrant under the Securities Act to any purchaser in the initial distribution of the securities:

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 to any purchaser in the initial distribution of the securities:
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 undersigned registrant relating to the offering required to be filed pursuant to Rule 424;
(ii) 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;
(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
(iv) Any other communication that is an offer in the offering made by the undersigned registrant to the purchaser.
(b) 

(i)Any preliminary prospectus or prospectus of the undersigned registrant relating to the offering required to be filed pursuant to Rule 424;

(ii)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;

(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

(iv)Any other communication that is an offer in the offering made by the undersigned registrant to the purchaser.

The undersigned registrant hereby further undertakes that, for purposes of determining any liability under the Securities Act, each filing of the registrant’s annual report pursuant to Sectionsection 13(a) or section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan’s annual report pursuant to Sectionsection 15(d) of the Securities Exchange Act)Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offering therein, and the offering of such securities at that time shall be deemed to be the initialbona fideoffering thereof.

(c) The undersigned registrant hereby further undertakes that:
(i) For purposes of determining any liability under the Securities Act, the information omitted from the form of prospectus filed as part of the registration statement in reliance upon Rule 430A and contained in the 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 the registration statement as of the time it was declared effective; and
(ii) 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 initialbona fideoffering thereof.

II-8

(d) 

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers, and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission 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 registrant of expenses incurred or paid by a director, officer or controlling person of the registrant 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.

The undersigned registrant hereby undertakes that:

(1)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.

(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 these securities at that time shall be deemed to be the initial bona fide offering.

II-9


II-8


SIGNATURES

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 Citycity of Worcester, Commonwealth of Massachusetts,New York, New York, on August 4, 2008.
RXi PHARMACEUTICALS CORPORATION
this June 13, 2019.

SELLAS LIFE SCIENCES GROUP, INC.

By:/s/ Angelos M. Stergiou
 Name:By: 
/s/  Angelos M. Stergiou, M.D., Sc.D., h.c.
Title:Tod A. WoolfPresident and Chief Executive Officer
Tod A. Woolf, Ph.D.
President, Chief Executive Officer and Director
(Principal Executive Officer)

Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement on Form S-1 has been signed below by the following persons in the capacities and on the dates indicated.

Signature Title 
Signatures
Title
Date
     

/s/ Tod A. Woolf


Tod A. Woolf, Ph.D.Angelos M. Stergiou

Angelos M. Stergiou, M.D., Sc.D., h.c.

 President, Chief Executive Officer
and Director

(Principal Executive and Financial Officer)
 August 4, 2008June 13, 2019
     

/s/ Stephen J. DiPalma


Stephen J. DiPalma*

John Burns, C.P.A.

 Chief Financial Officer

Vice President, Finance and Corporate Controller 

(Interim Principal Financial and Accounting Officer)

 August 4, 2008June 13, 2019
     

/s/ *


Sanford J. Hillsberg

Jane Wasman

 DirectorChairman of the Board August 4, 2008June 13, 2019
     

/s/ *


Mark J. Ahn

Stephen F. Ghiglieri

 Director August 4, 2008June 13, 2019
     

/s/ *


Stephen S. Galliker

David A. Scheinberg, M.D., Ph.D.

 Director August 4, 2008June 13, 2019
     

/s/ *


Steven A. Kriegsman

Robert L. Van Nostrand

 Director August 4, 2008June 13, 2019
     

/s/ *

John Varian

DirectorJune 13, 2019
  
*By:/s/ Angelos M. Stergiou 
/s/  
Name: Angelos M. Stergiou, M.D., Sc.D., h.c.
Stephen J. DiPalmaAttorney-in-fact
Stephen J. DiPalmaAttorney-in-fact
    


II-9


EXHIBIT INDEX
     
Exhibit
  
Number
 
Description
 
 2.1 Contribution Agreement between CytRx Corporation and RXi Pharmaceuticals Corporation, dated January 8, 2007(1)
 2.2 Contribution Agreement between CytRx Corporation and RXi Pharmaceuticals, dated April 30, 2007(1)
 2.3 Reimbursement Agreement between CytRx Corporation and RXi Pharmaceuticals, dated January 8, 2007(1)
 3.1 Form of Amended and Restated Certificate of Incorporation of RXi Pharmaceuticals Corporation(1)
 3.2 Form of Amended and Restated By-laws of RXi Pharmaceuticals Corporation(1)
 4.1 Specimen common stock certificate(3)
 4.2 Stockholder Agreement between CytRx Corporation, RXi Pharmaceuticals Corporation, the other Stockholders and the Scientific Advisory Board Members, dated February 23, 2007(1)
 4.3 Exhibit A to Contribution Agreement — Registration Rights Terms between CytRx Corporation and RXi Pharmaceuticals Corporation, dated April 30, 2007(1)
 4.4 Annex I to form of Subscription Agreement — Registration Rights Terms between RXi Pharmaceuticals and Stephen Galliker, Mark Ahn and Sanford Hillsberg(1)
 4.5 Securities Purchase Agreement between RXi Pharmaceuticals Corporation and certain investors, dated June 24, 2008(5)
 4.6 Amendment to Stockholder Agreement, dated July 28, 2008(7)
 4.7 Amendment to Exhibit A to Contribution Agreement, dated July 28, 2008(7)
 5.1 Opinion of Ropes & Gray, LLP, counsel to the Registrant, with respect to the legality of securities being registered(7)
 10.1 Voting Agreement between CytRx Corporation and the University of Massachusetts Medical School, dated January 10, 2007(1)
 10.2 License Agreement between Cold Spring Harbor Laboratory and RXi Pharmaceuticals Corporation, dated March 15, 2007+(2)
 10.3 Invention Disclosure Agreement between the University of Massachusetts Medical School and RXi Pharmaceuticals Corporation, dated January 8, 2007(2)
 10.4 Exclusive License Agreement (No.: UMMC06-21-01) between the University of Massachusetts and RXi Pharmaceuticals Corporation, dated January 10, 2007+(2)
 10.5 Exclusive License Agreement (No.: UMMC03-68-02) between the University of Massachusetts and RXi Pharmaceuticals Corporation, dated January 10, 2007+(2)
 10.6 Exclusive License Agreement (No.: UMMC03-75-01) between the University of Massachusetts and RXi Pharmaceuticals Corporation, dated January 10, 2007+(2)
 10.7 Non-Exclusive License Agreement (No.: UMMC06-08-03) between the University of Massachusetts and RXi Pharmaceuticals Corporation, dated January 10, 2007+(2)
 10.8 Non-Exclusive License Agreement, between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number01-36, dated April 15, 2003, as amended February 1, 2004+(2)
 10.9 Exclusive License Agreement between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number02-01, dated April 15, 2003, as amended March 18, 2004 and September 10, 2004+(2)
 10.10 Amended and Restated Exclusive License Agreement between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number03-05,00-37,01-31,03-134,93-09 and02-38, dated September 15, 2003, as amended September 17, 2003 and February 1, 2004+(2)
 10.11 Exclusive License Agreement between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number03-17, dated April 15, 2003, as amended January 7, 2004 and February 1, 2004+(2)
 10.12 Exclusive License Agreement between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number03-60, dated April 15, 2003 as amended February 1, 2004+(2)
 10.13 Co-Exclusive License Agreement between CytRx Corporation and the University of Massachusetts Medical School related to UMMS disclosure number03-33, and all amendments thereto, dated May 18, 2006+(2)


     
Exhibit
  
Number
 
Description
 
 10.14 License Agreement between CytRx Corporation, Imperial College Innovations Limited and Imperial College of Science and Technology, dated May 20, 2004+(2)
 10.15 Employment Agreement between RXi Pharmaceuticals Corporation and Tod Woolf, Ph.D., dated February 22, 2007*(1)
 10.16 Employment Agreement between RXi Pharmaceuticals Corporation and James Warren, dated April 30, 2007*(1)
 10.17 Employment Agreement between RXi Pharmaceuticals Corporation and Pamela Pavco, dated March 7, 2007*(1)
 10.18 Employment Agreement between RXi Pharmaceuticals Corporation and Dmitry Samarsky, dated June 24, 2007*(1)
 10.19 Employment Agreement between RXi Pharmaceuticals Corporation and Stephen J. DiPalma, dated August 28, 2007*(1)
 10.20 RXi Pharmaceuticals Corporation’s 2007 Incentive Plan, as amended*(6)
 10.21 Form of Incentive Stock Option*(1)
 10.22 Form of Non-qualified Stock Option*(1)
 10.23 Lease between RXi Pharmaceuticals Corporation and Newgate Properties, LLC for One Gateway Place, Worcester, Massachusetts, 01605, dated September 25, 2007(3)
 10.24 Form of Subscription Agreement between RXi Pharmaceuticals Corporation and each of Mark K. Ahn, Ph.D., Stephen S. Galliker and Sanford J. Hillsberg(3)
 10.25 Scientific Advisory Board Agreement between RXi Pharmaceuticals Corporation and Tariq Rana, Ph.D., dated February 26, 2007 and corresponding Letter Agreement dated April 30, 2007(3)
 10.26 Scientific Advisory Board Agreement between RXi Pharmaceuticals Corporation and Gregory Hannon, Ph.D., dated February 26, 2007 and corresponding Letter Agreement dated April 30, 2007(3)
 10.27 Scientific Advisory Board Agreement between RXi Pharmaceuticals Corporation and Michael Czech, Ph.D., dated February 26, 2007 and corresponding Letter Agreement dated April 30, 2007(3)
 10.28 Scientific Advisory Board Agreement between RXi Pharmaceuticals Corporation and Craig C. Mello, Ph.D., dated February 26, 2007 and corresponding Letter Agreement dated April 30, 2007(3)
 10.29 Letter Agreement between CytRx Corporation and RXi Pharmaceuticals Corporation, dated December 27, 2007(3)
 10.30 Patent License Agreement between RXi Pharmaceuticals Corporation and Invitrogen IP Holdings, Inc. dated November 1, 2007(4)
 10.31 Placement Agency Agreement between Jefferies & Company, Inc., Natixis Bleichroeder Inc., Broadpoint Securities Group, Inc.,Griffin Securities, Inc. and RXi Pharmaceuticals Corporation dated June 24, 2008(5)
 23.1 Consent of BDO Seidman, LLP, Independent Registered Public Accounting Firm(7)
 23.2 Consent of Ropes & Gray LLP (included in Exhibit 5.1)(7)
 24.1 Power of Attorney (included onpage II-9)(8)
(1)Previously filed as an Exhibit to the Company’s Registration Statement onForm S-1 filed on October 30, 2007 (FileNo. 333-147009) and incorporated by reference herein.
(2)Previously filed as an Exhibit to Amendment No. 1 to the Company’s Registration Statement onForm S-1 filed on November 19, 2007 (FileNo. 333-147009) and incorporated by reference herein.
(3)Previously filed as an Exhibit to Amendment No. 2 to the Company’s Registration Statement onForm S-1 filed on January 20, 2008 (FileNo. 333-147009) and incorporated by reference herein.
(4)Previously filed as an Exhibit to Amendment No. 3 to the Company’s Registration Statement onForm S-1 filed on February 1, 2008 (FileNo. 333-147009) and incorporated by reference herein.
(5)Previously filed as an Exhibit toForm 8-K as filed on June 26, 2008 and incorporated by reference herein.
(6)Previously filed as an Exhibit toForm 8-K as filed on July 24, 2008 and incorporated by reference herein.
(7)Filed herewith.
(8)Previously filed.

II-10


 * Indicates a management or compensatory plan or arrangement.
 + This exhibit was filed separately with the Commission pursuant to an application for confidential treatment. The confidential portions of the exhibit have been omitted and have been marked by an asterisk.