Cover
Cover - shares | 9 Months Ended | |
Sep. 30, 2022 | Nov. 10, 2022 | |
Cover [Abstract] | ||
Document Type | 10-Q | |
Document Quarterly Report | true | |
Document Period End Date | Sep. 30, 2022 | |
Document Transition Report | false | |
Entity File Number | 001-33958 | |
Entity Registrant Name | SELLAS Life Sciences Group, Inc. | |
Entity Incorporation, State or Country Code | DE | |
Entity Tax Identification Number | 20-8099512 | |
Entity Address, Address Line One | 7 Times Square, Suite 2503, | |
Entity Address, City or Town | New York, | |
Entity Address, State or Province | NY | |
Entity Address, Postal Zip Code | 10036 | |
City Area Code | (646) | |
Local Phone Number | 200-5278 | |
Title of 12(b) Security | Common Stock, $0.0001 par value per share | |
Trading Symbol | SLS | |
Security Exchange Name | NASDAQ | |
Entity Current Reporting Status | Yes | |
Entity Interactive Data Current | Yes | |
Entity Filer Category | Non-accelerated Filer | |
Entity Small Business | true | |
Entity Emerging Growth Company | false | |
Entity Shell Company | false | |
Entity Common Stock, Shares Outstanding | 20,588,247 | |
Entity Central Index Key | 0001390478 | |
Current Fiscal Year End Date | --12-31 | |
Document Fiscal Year Focus | 2022 | |
Document Fiscal Period Focus | Q3 | |
Amendment Flag | false |
CONSOLIDATED BALANCE SHEETS
CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021 |
Current assets: | ||
Cash and cash equivalents | $ 21,348 | $ 21,355 |
Restricted cash and cash equivalents | 100 | 100 |
Prepaid expenses and other current assets | 1,157 | 1,589 |
Total current assets | 22,605 | 23,044 |
Operating lease right-of-use assets | 961 | 723 |
Goodwill | 1,914 | 1,914 |
Deposits and other assets | 521 | 594 |
Total assets | 26,001 | 26,275 |
Current liabilities: | ||
Accounts payable | 2,127 | 2,144 |
Accrued expenses and other current liabilities | 4,570 | 2,640 |
Operating lease liabilities | 356 | 198 |
Acquired in-process research and development payable | 5,500 | 0 |
Total current liabilities | 12,553 | 4,982 |
Operating lease liabilities, non-current | 680 | 610 |
Warrant liability | 1 | 40 |
Contingent consideration | 170 | 296 |
Total liabilities | 13,404 | 5,928 |
Commitments and contingencies (Note 7) | ||
Stockholders’ equity: | ||
Preferred stock, $0.0001 par value; 5,000,000 shares authorized; Series A convertible preferred stock, 17,500 shares designated; no shares issued and outstanding at September 30, 2022 and December 31, 2021 | 0 | 0 |
Common stock, $0.0001 par value; 350,000,000 shares authorized, 20,588,247 and 15,895,637 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively | 2 | 2 |
Additional paid-in capital | 183,378 | 158,948 |
Accumulated deficit | (170,783) | (138,603) |
Total stockholders’ equity | 12,597 | 20,347 |
Total liabilities and stockholders’ equity | $ 26,001 | $ 26,275 |
CONSOLIDATED BALANCE SHEETS (Pa
CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares | Sep. 30, 2022 | Dec. 31, 2021 |
Preferred stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 |
Preferred stock, shares authorized (in shares) | 5,000,000 | 5,000,000 |
Preferred stock, shares issued (in shares) | 0 | 0 |
Preferred stock, shares outstanding (in shares) | 0 | 0 |
Common stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 |
Common stock, shares authorized (in shares) | 350,000,000 | 350,000,000 |
Common stock, shares issued (in shares) | 20,588,247 | 15,895,637 |
Common stock, shares outstanding (in shares) | 20,588,247 | 15,895,637 |
Series A Preferred Stock | ||
Preferred stock, shares authorized (in shares) | 17,500 | 17,500 |
CONSOLIDATED STATEMENTS OF OPER
CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | |
Income Statement [Abstract] | ||||
Licensing revenue | $ 0 | $ 0 | $ 1,000,000 | $ 7,600,000 |
Operating expenses: | ||||
Cost of licensing revenue | 0 | 0 | 100,000 | 200,000 |
Research and development | 4,282,000 | 4,541,000 | 14,422,000 | 12,281,000 |
Acquired in-process research and development | 0 | 0 | 10,000,000 | 0 |
General and administrative | 2,864,000 | 2,436,000 | 8,982,000 | 8,794,000 |
Total operating expenses | 7,146,000 | 6,977,000 | 33,504,000 | 21,275,000 |
Operating loss | (7,146,000) | (6,977,000) | (32,504,000) | (13,675,000) |
Non-operating income (expense), net: | ||||
Change in fair value of warrant liability | 2,000 | 30,000 | 39,000 | (29,000) |
Change in fair value of contingent consideration | 11,000 | (140,000) | 126,000 | (403,000) |
Interest income | 111,000 | 2,000 | 159,000 | 6,000 |
Total non-operating income (expense), net | 124,000 | (108,000) | 324,000 | (426,000) |
Net loss | $ (7,022,000) | $ (7,085,000) | $ (32,180,000) | $ (14,101,000) |
Per share information: | ||||
Net loss per common share, basic (in dollars per share) | $ (0.34) | $ (0.45) | $ (1.70) | $ (0.92) |
Net loss per common share, diluted (in dollars per share) | $ (0.34) | $ (0.45) | $ (1.70) | $ (0.92) |
Weighted-average common shares outstanding, basic (in shares) | 20,562,351 | 15,874,076 | 18,932,571 | 15,344,210 |
Weighted-average common shares outstanding, diluted (in shares) | 20,562,351 | 15,874,076 | 18,932,571 | 15,344,210 |
CONSOLIDATED STATEMENTS OF STOC
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Accumulated Deficit |
Beginning balance (in shares) at Dec. 31, 2020 | 14,254,554 | |||
Beginning balance at Dec. 31, 2020 | $ 27,961 | $ 1 | $ 145,864 | $ (117,904) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||
Issuance of common stock and common stock warrants, net of issuance costs (in shares) | 786,927 | |||
Issuance of common stock and common stock warrants, net of issuance costs | 9,005 | 9,005 | ||
Issuance of common stock upon exercise of warrants (in shares) | 832,650 | |||
Issuance of common stock upon exercise of warrants | 3,019 | $ 1 | 3,018 | |
Stock-based compensation | 723 | 723 | ||
Net loss | (14,101) | (14,101) | ||
Ending balance (in shares) at Sep. 30, 2021 | 15,874,131 | |||
Ending balance at Sep. 30, 2021 | 26,607 | $ 2 | 158,610 | (132,005) |
Beginning balance (in shares) at Jun. 30, 2021 | 15,873,941 | |||
Beginning balance at Jun. 30, 2021 | 33,415 | $ 2 | 158,333 | (124,920) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||
Issuance of common stock upon exercise of warrants (in shares) | 190 | |||
Issuance of common stock upon exercise of warrants | 2 | 2 | ||
Stock-based compensation | 275 | 275 | ||
Net loss | (7,085) | (7,085) | ||
Ending balance (in shares) at Sep. 30, 2021 | 15,874,131 | |||
Ending balance at Sep. 30, 2021 | 26,607 | $ 2 | 158,610 | (132,005) |
Beginning balance (in shares) at Dec. 31, 2021 | 15,895,637 | |||
Beginning balance at Dec. 31, 2021 | 20,347 | $ 2 | 158,948 | (138,603) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||
Issuance of common stock and common stock warrants, net of issuance costs (in shares) | 4,667,521 | |||
Issuance of common stock and common stock warrants, net of issuance costs | 23,065 | 23,065 | ||
Issuance of common stock under employee stock purchase plan (in shares) | 25,089 | |||
Issuance of common stock under employee stock purchase plan | 85 | 85 | ||
Stock-based compensation | 1,280 | 1,280 | ||
Net loss | (32,180) | (32,180) | ||
Ending balance (in shares) at Sep. 30, 2022 | 20,588,247 | |||
Ending balance at Sep. 30, 2022 | 12,597 | $ 2 | 183,378 | (170,783) |
Beginning balance (in shares) at Jun. 30, 2022 | 20,551,918 | |||
Beginning balance at Jun. 30, 2022 | 19,057 | $ 2 | 182,816 | (163,761) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||
Issuance of common stock and common stock warrants, net of issuance costs (in shares) | 21,602 | |||
Issuance of common stock and common stock warrants, net of issuance costs | 69 | 69 | ||
Issuance of common stock under employee stock purchase plan (in shares) | 14,727 | |||
Issuance of common stock under employee stock purchase plan | 38 | 38 | ||
Stock-based compensation | 455 | 455 | ||
Net loss | (7,022) | (7,022) | ||
Ending balance (in shares) at Sep. 30, 2022 | 20,588,247 | |||
Ending balance at Sep. 30, 2022 | $ 12,597 | $ 2 | $ 183,378 | $ (170,783) |
CONSOLIDATED STATEMENTS OF CASH
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended | |
Sep. 30, 2022 | Sep. 30, 2021 | |
Cash flows from operating activities: | ||
Net loss | $ (32,180) | $ (14,101) |
Adjustment to reconcile net loss to net cash used in operating activities: | ||
Acquired in-process research and development expense | 10,000 | 0 |
Non-cash stock-based compensation | 1,280 | 723 |
Non-cash lease expense | 334 | 0 |
Change in fair value of common stock warrants | (39) | 29 |
Change in fair value of contingent consideration | (126) | 403 |
Changes in operating assets and liabilities: | ||
Contract asset | 0 | 1,128 |
Prepaid expenses and other assets | 505 | (2,181) |
Accounts payable | (17) | (2,112) |
Accrued expenses and other current liabilities | 1,930 | 666 |
Operating lease liabilities | (344) | 0 |
Deferred revenue | 0 | (5,600) |
Net cash used in operating activities | (18,657) | (21,045) |
Cash flows from investing activities: | ||
Cash paid for acquisition of in-process research and development | (4,500) | 0 |
Net cash used in investing activities | (4,500) | 0 |
Cash flows from financing activities: | ||
Proceeds from issuance of common stock and common stock warrants, net of offering costs | 23,065 | 9,005 |
Proceeds from employee stock purchases | 85 | 0 |
Net proceeds from exercise of warrants | 0 | 3,019 |
Net cash provided by financing activities | 23,150 | 12,024 |
Net decrease in cash, cash equivalents, restricted cash, and restricted cash equivalents | (7) | (9,021) |
Cash, cash equivalents, restricted cash, and restricted cash equivalents at the beginning of period | 21,455 | 35,402 |
Cash, cash equivalents, restricted cash, and restricted cash equivalents at the end of period | 21,448 | 26,381 |
Supplemental disclosure of cash flow information: | ||
Cash received during the period for interest | 159 | 6 |
Supplemental disclosure of non-cash investing and financing activities: | ||
Payable for acquired in-process research and development | 5,500 | 0 |
Increase in operating right of use assets and current and non-current lease liabilities | $ 449 | $ 0 |
Description of Business
Description of Business | 9 Months Ended |
Sep. 30, 2022 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Description of Business | Description of Business Overview SELLAS Life Sciences Group, Inc. (the "Company" or "SELLAS") is a late-stage clinical biopharmaceutical company focused on novel therapeutics for a broad range of cancer indications. SELLAS’ lead product candidate, galinpepimut-S ("GPS"), is a cancer immunotherapeutic agent licensed from Memorial Sloan Kettering Cancer Center ("MSK") and targets the Wilms Tumor 1 ("WT1") protein, which is present in an array of tumor types. 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. SELLAS' second product candidate is GFH009, a small molecule, highly selective cyclin-dependent kinase 9 ("CDK9") inhibitor, which is licensed from GenFleet Therapeutics (Shanghai), Inc. ("GenFleet"), for all therapeutic and diagnostic uses in the world outside of Greater China (mainland China, Hong Kong, Macau and Taiwan). |
Liquidity
Liquidity | 9 Months Ended |
Sep. 30, 2022 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Liquidity | Liquidity Since inception, the Company has incurred recurring losses and negative cash flows from operations and, as of September 30, 2022, has an accumulated deficit of $170.8 million. During the nine months ended September 30, 2022, the Company incurred a net loss of $32.2 million, which includes a one-time $10.0 million expense for acquired in-process research and development related to the upfront license fee for GFH009, and used $18.7 million of cash in operations. The Company expects to generate losses from operations for the foreseeable future primarily due to research and development costs for its product candidates, which raises substantial doubt about the Company's ability to continue as a going concern. On April 16, 2021, the Company entered into a Controlled Equity Offering SM Sales Agreement (the "Sales Agreement") with Cantor Fitzgerald & Co. (the "Agent"). From time to time during the term of the Sales Agreement, the Company may offer and sell shares of common stock having an aggregate offering price up to a total of $50.0 million in gross proceeds. The Agent will collect a fee equal to 3% of the gross sales price of all shares of common stock sold. Shares of common stock sold under the Sales Agreement are offered and sold pursuant to the Company's registration statement on Form S-3, which was filed with the SEC on April 16, 2021 and declared effective on April 29, 2021. During the year ended December 31, 2021, the Company sold a total of 786,927 shares of common stock pursuant to the Sales Agreement at an average price of $12.04 per share for aggregate net proceeds of approximately $9.0 million. During the nine months ended September 30, 2022, the Company sold an additional 37,891 shares of common stock pursuant to the Sales Agreement at an average price of $3.25 per share for aggregate net proceeds of approximately $0.1 million. There remains approximately $40.4 million available for future sales of shares of common stock under the Sales Agreement. Other than the Sales Agreement, the Company currently does not have any commitments to obtain additional funds. In December 2020, the Company, together with its wholly-owned subsidiary, SLSG Limited, LLC, entered into an Exclusive License Agreement (the “3DMed License Agreement”) with 3D Medicines Inc. ("3DMed"), pursuant to which the Company granted 3DMed a sublicensable, royalty-bearing license, under certain intellectual property owned or controlled by the Company, to develop, manufacture and have manufactured, and commercialize GPS and heptavalent GPS product candidates for all therapeutic and other diagnostic uses in mainland China, Hong Kong, Macau and Taiwan ("3DMed Territory"). To date, the Company has received $10.5 million in upfront payments and certain technology transfer and regulatory milestones. The participation of 3DMed in the REGAL Phase 3 clinical trial in China will trigger two development milestone payments totaling $13.0 million to the Company, which the Company expects to receive in the first half of 2023. A total of $191.5 million in potential future development, regulatory, and sales milestones, not including future royalties, remains under the 3DMed License Agreement as of September 30, 2022, which milestones are variable in nature and not under the Company's control. As of September 30, 2022, the Company had cash and cash equivalents of approximately $21.3 million and restricted cash and cash equivalents of $0.1 million. In accordance with Accounting Standards Codification ("ASC") 205-40, Presentation of Financial Statements - Going Concern , the Company evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about its ability to continue as a |
Basis of Presentation and Signi
Basis of Presentation and Significant Accounting Policies | 9 Months Ended |
Sep. 30, 2022 | |
Accounting Policies [Abstract] | |
Basis of Presentation and Significant Accounting Policies | Basis of Presentation and Significant Accounting Policies The Company's complete summary of significant accounting policies can be found in "Item 8. Financial Statements and Supplementary Data - Note 3. Basis of Presentation and Significant Accounting Policies" in the audited annual consolidated financial statements included in the 2021 Annual Report. The significant accounting policies summarized and included in the 2021 Annual Report have not materially changed, except as set forth below. Basis of Presentation The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”). Any reference in these notes to applicable guidance is meant to refer to U.S. GAAP as found in the ASC and Accounting Standards Updates ("ASUs") of the Financial Accounting Standards Board ("FASB"). Principles of Consolidation The consolidated financial statements include the financial statements of the Company and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated upon consolidation. Unless the context otherwise indicates, reference in these notes to the "Company" refer to SELLAS Life Sciences Group, Inc., and its wholly owned subsidiaries, SELLAS Life Sciences Group, Ltd., a privately held Bermuda exempted company, SLSG Limited, LLC, Sellas Life Sciences Limited, and Apthera, Inc. Unaudited Interim Results These consolidated financial statements and accompanying notes should be read in conjunction with the Company's annual consolidated financial statements and the notes thereto included in the 2021 Annual Report. The accompanying consolidated financial statements as of September 30, 2022 and for the three and nine months ended September 30, 2022 and 2021, are unaudited, but include all adjustments, consisting of normal recurring entries, that management believes to be necessary for a fair presentation of the periods presented. Interim results are not necessarily indicative of results for a full year. Balance sheet amounts as of December 31, 2021 have been derived from the audited financial statements as of that date. Impact of COVID-19 The ongoing global COVID-19 pandemic, including the surges of cases from various variants, continues to disrupt the Company’s business operations and those of its collaborators, including 3DMed and GenFleet, contractors, contract research organizations (“CROs”), suppliers, clinical sites, contract manufacturing organizations (“CMOs”), and other partners. The COVID-19 pandemic has and may continue to affect the health and availability of the Company’s workforce and that of the third-parties it relies on, such as its CROs, clinical sites, CMOs, and other contractors as well as the governmental agencies, such as the U.S. Food and Drug Administration (“FDA”) and health authorities in other countries which could delay or otherwise adversely impact the ability of such parties to fulfill their obligations. The Company is continuously monitoring the impact of the pandemic on its clinical development programs. The full extent to which the COVID-19 pandemic will continue to directly or indirectly impact the Company’s business, results of operations and financial condition will depend on future developments that, despite progress in vaccination efforts, remain highly uncertain, subject to change and cannot be predicted with confidence, including the duration of the outbreak, the continued availability and efficacy of vaccines and booster shots, developments or perceptions regarding safety of vaccines, new information which may emerge concerning the severity of COVID-19, the emergence of new strains of COVID-19, including any future variants that may emerge, the actions to contain COVID-19 or treat its impact, including continuing or new lockdowns, among others, and the direct and indirect economic effects of the pandemic, including as a result of inflation, supply chain disruptions, shifting demand and labor shortages. The estimates of the impact on the Company’s business may change based on new information that may emerge concerning COVID-19 and the actions to contain it or treat its impact and the economic impact on local, regional, national and international markets. Acquired In-Process Research and Development Costs incurred in obtaining technology licenses are immediately recognized as acquired in-process research and development expense, provided the technology licensed has no alternative future use. Payments related to contingent consideration such as development milestones, commercial milestones and royalties (Note 5) will be recognized when the contingency is probable and reasonably estimable as prescribed by ASC 450, Contingencies . Net Loss Per Share Net loss per share is computed by dividing net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding during each period. Diluted loss per share includes the effect, if any, from the potential exercise or conversion of securities, such as warrants, stock options and unvested restricted stock that would result in the issuance of incremental shares of common stock. In computing the basic and diluted net loss per share, the weighted average number of shares remains the same for both calculations due to the fact that, when a net loss exists, dilutive shares are not included in the calculation as the impact is anti-dilutive. The following potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding, as they would be anti-dilutive (in thousands): As of September 30, 2022 2021 Common stock warrants 5,148 558 Stock options 1,071 526 Restricted stock units ("RSUs") 297 210 6,516 1,294 Recent Accounting Standards Adopted In May 2021, the FASB issued ASU No. 2021-04, Issuer’s Accounting for Certain Modifications of Exchanges of Freestanding Equity-Classified Written Call Options to clarify the accounting for modifications or exchanges of freestanding equity-classified written call options, such as warrants, that remain equity classified after modification or exchange. This ASU became effective for the Company on January 1, 2022 and did not have a material impact on the Company's consolidated financial statements. Recent Accounting Standards Not Yet Adopted In August 2020, the FASB issued ASU No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity which, among other things, simplifies the accounting models for the allocation of proceeds attributable to the issuance of a convertible debt instrument. As a result, after adopting the ASU’s guidance, entities will not separately present in equity an embedded conversion feature in such debt. Instead, they will account for a convertible debt instrument wholly as debt, and for convertible preferred stock wholly as preferred stock (i.e., as a single unit of account), unless (i) a convertible instrument contains features that require bifurcation as a derivative under ASC 815 or (ii) a convertible debt instrument was issued at a substantial premium. The standard becomes effective for the Company in the first quarter of 2024 and early adoption is permitted. The Company is currently evaluating the potential impact of the adoption of this standard on its consolidated financial statements. |
Fair Value Measurements
Fair Value Measurements | 9 Months Ended |
Sep. 30, 2022 | |
Fair Value Disclosures [Abstract] | |
Fair Value Measurements | Fair Value Measurements The following tables present information about the Company's assets and liabilities measured at fair value on a recurring basis in the consolidated balance sheets (in thousands): Description September 30, 2022 Quoted Prices In Significant Other Unobservable Assets: Cash equivalents $ 20,967 $ 20,967 $ — $ — Restricted cash equivalents 100 100 — — Total assets measured and recorded at fair value $ 21,067 $ 21,067 $ — $ — Liabilities: Warrant liability $ 1 $ — $ — $ 1 Contingent consideration 170 — — 170 Total liabilities measured and recorded at fair value $ 171 $ — $ — $ 171 Description December 31, 2021 Quoted Prices In Significant Other Unobservable Assets: Cash equivalents $ 21,000 $ 21,000 $ — $ — Restricted cash equivalents 100 100 — — Total assets measured and recorded at fair value $ 21,100 $ 21,100 $ — $ — Liabilities: Warrant liability $ 40 $ — $ — $ 40 Contingent consideration 296 — — 296 Total liabilities measured and recorded at fair value $ 336 $ — $ — $ 336 The Company did not transfer any financial instruments into or out of Level 3 classification, during the nine months ended September 30, 2022 or during the year ended December 31, 2021. See Note 9, Warrants to Acquire Shares of Common Stock, for a reconciliation of the changes in the fair value of the warrant liability for the nine months ended September 30, 2022. A reconciliation of the change in the fair value of the contingent consideration liability for the nine months ended September 30, 2022 is as follows (in thousands): Fair Value Measurements Contingent consideration, December 31, 2021 $ 296 Change in the fair value of the contingent consideration (126) Contingent consideration, September 30, 2022 $ 170 The contingent consideration relates to the future contingent payments of up to $32.0 million based on the achievement of certain development and commercial milestones relating to the Company’s nelipepimut-S ("NPS") product candidate, of which $2.0 million has been paid to date. The remaining contingent consideration of up to $30.0 million is payable at the election of the Company in either cash or shares of common stock, provided that the Company may not issue any shares in satisfaction of any contingent consideration, unless it has first obtained approval from its stockholders in accordance with Rule 5635(a) of the Nasdaq Marketplace Rules. The fair value of the contingent consideration is measured at the end of each reporting period using Level 3 inputs. The fair value of development and regulatory milestones are estimated utilizing a probability adjusted, discounted cash flow approach and the fair value of net sales milestones is estimated utilizing an option pricing model with Monte Carlo simulation. The following significant unobservable inputs were used in the valuation of the contingent consideration liability: As of September 30, 2022 As of December 31, 2021 Potential milestone payments $0 - $30 million $0 - $30 million Discount rate 16.8 % 15.5 % Cumulative probability of success 5.3 % 5.3 % Projected years of payments 2028 - 2031 2028 - 2031 |
Acquired In-Process Research an
Acquired In-Process Research and Development | 9 Months Ended |
Sep. 30, 2022 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Acquired In-Process Research and Development | Acquired In-Process Research and Development Exclusive License Agreement with GenFleet On March 31, 2022, the Company entered into an exclusive license agreement with GenFleet pursuant to which GenFleet granted to the Company a sublicensable, royalty-bearing license, under certain of its intellectual property, to develop, manufacture, and commercialize GFH009 for the treatment, diagnosis or prevention of disease in humans and animals in all countries and territories of the world other than mainland China, Hong Kong, Macau, and Taiwan (the "GFH009 Territory"). GFH009 is currently in a Phase 1 clinical trial in the United States and China. In consideration for the exclusive license, the Company has agreed to pay to GenFleet (i) an upfront and technology transfer fee of $10.0 million, of which $4.5 million was paid in April 2022 and $5.5 million is due upon the first day of the 15th calendar month following the effective date of the license agreement, (ii) development and regulatory milestone payments for up to three indications totaling up to $48.0 million in the aggregate, and (iii) sales milestone payments totaling up to $92.0 million in the aggregate upon the achievement of certain net sales thresholds in a given calendar year. The Company has also agreed to pay GenFleet single-digit tiered royalties based upon a percentage of annual net sales of GFH009 in the GFH009 Territory, with the royalty rate escalating based on the level of annual net sales ranging from the low to high single digits. |
Balance Sheet Accounts
Balance Sheet Accounts | 9 Months Ended |
Sep. 30, 2022 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Balance Sheet Accounts | Balance Sheet Accounts Prepaid expenses and other current assets consist of the following (in thousands): September 30, 2022 December 31, 2021 Insurance $ 667 $ 217 Clinical development 316 1,309 Professional fees 127 36 Other 47 27 Prepaid expenses and other current assets $ 1,157 $ 1,589 Accrued expenses and other current liabilities consist of the following (in thousands): September 30, 2022 December 31, 2021 Clinical trial costs $ 2,947 $ 1,325 Compensation and related benefits 1,228 989 Professional fees 203 165 Other 192 161 Accrued expenses and other current liabilities $ 4,570 $ 2,640 |
Commitments and Contingencies
Commitments and Contingencies | 9 Months Ended |
Sep. 30, 2022 | |
Commitments and Contingencies Disclosure [Abstract] | |
Commitments and Contingencies | Commitments and Contingencies Leases The Company has a non-cancelable operating lease for certain executive, administrative, and general business office space for its headquarters in New York, New York, which began on June 5, 2020, was amended in February 2022 to add additional space, and has a term through December 31, 2024. The Company assessed the lease amendment for the additional space and determined it should be accounted for as a separate contract. The weighted average discount rate of the Company's operating leases under ASC 842, Leases is approximately 13.95%. As of September 30, 2022, the leases have a remaining term of 2.25 years. Rent expense related to the Company's operating leases was approximately $0.1 million f or each of the three months ended September 30, 2022 and 2021, and $0.3 million and $0.2 million for the nine months ended September 30, 2022 and 2021, respectively. The Company made cash payments related to its operating leases of approximately $0.1 million for each of the three months ended September 30, 2022 and 2021, and $0.3 million and $0.2 million for the nine months ended September 30, 2022 and 2021, respectively. Future minimum lease payments are as follows as of September 30, 2022 (in thousands): Future minimum lease payments: 2022 (remaining) $ 127 2023 518 2024 533 Total future minimum lease payments 1,178 Less: imputed interest (142) Current and non-current operating lease liabilities $ 1,036 |
Stockholders' Equity
Stockholders' Equity | 9 Months Ended |
Sep. 30, 2022 | |
Equity [Abstract] | |
Stockholders' Equity | Stockholders’ Equity Preferred Stock The Company has authorized up to 5,000,000 shares of preferred stock, $0.0001 par value per share, for issuance. There were no preferred shares outstanding as of September 30, 2022 and December 31, 2021. Common Stock The Company has authorized up to 350,000,000 shares of common stock, $0.0001 par value per share, for issuance. On April 5, 2022, the Company closed an underwritten public offering (the "April 2022 Offering"), issuing 4,629,630 shares of common stock and accompanying common stock warrants to purchase an aggregate of 4,629,630 shares of common stock. The shares of common stock and accompanying common stock warrants were sold at a combined price of $5.40 per share and accompanying common stock warrant. Each common stock warrant sold with the shares of common stock represents the right to purchase one share of the Company’s common stock at an exercise price of $5.40 per share. The common stock warrants are exercisable immediately and will expire on April 5, 2027, five years from the date of issuance. The net proceeds to the Company from the April 2022 Offering, after deducting the underwriting discounts and commissions and other offering expenses, and excluding the exercise of any warrants, were approximately $23.0 million. As of September 30, 2022, the Company has shares of common stock reserved for future issuance as follows (in thousands): Warrants outstanding 5,148 Stock options outstanding 1,071 RSUs outstanding 297 Shares reserved for future issuance under the Company’s 2019 Equity Incentive Plan 608 Shares reserved for future issuance under the 2021 Employee Stock Purchase Plan 275 Total common stock reserved for future issuance 7,399 |
Warrants to Acquire Shares of C
Warrants to Acquire Shares of Common Stock | 9 Months Ended |
Sep. 30, 2022 | |
Warrants and Rights Note Disclosure [Abstract] | |
Warrants to Acquire Shares of Common Stock | Warrants to Acquire Shares of Common Stock Warrants Outstanding The following is a summary of the activity of the Company's warrants to acquire shares of common stock for the nine months ended September 30, 2022 (in thousands): Warrant Issuance Outstanding, December 31, 2021 Granted Canceled/Expired Outstanding, September 30, 2022 Exercise Price per Share Expiration Warrants classified as equity: April 2022 Offering — 4,630 — 4,630 $ 5.40 April 2027 January 2020 Offering 309 — — 309 $ 3.93 July 2025 July 2020 PIPE Offering 25 — — 25 $ 3.30 August 2025 July 2018 Offering 132 — — 132 $ 7.50 July 2023 March 2019 Exercise Agreement 30 — — 30 $ 7.50 March 2024 Other 9 — — 9 $ 306.66 December 2022 - June 2024 505 4,630 — 5,135 Warrants classified as liability 14 — (1) 13 $ 7.50 September 2023 - November 2023 519 4,630 (1) 5,148 Warrants to acquire shares of common stock primarily consist of equity-classified warrants. In addition, warrants to acquire shares of common stock that may require the Company to settle in cash are liability-classified warrants. Warrants Classified as Equity The warrants to acquire shares of common stock issued during the April 2022 Offering were recorded as equity upon issuance. During its evaluation of equity classification of these warrants, the Company considered the conditions as prescribed within ASC 815-40, Derivatives and Hedging, Contracts in an Entity’s own Equity (“ASC 815-40”). The conditions within ASC 815-40 are not subject to a probability assessment. The warrants to acquire shares of common stock do not fall under the liability criteria within ASC 480, Distinguishing Liabilities from Equity , as they are not puttable and do not represent an instrument that has a redeemable underlying security. The warrants do meet the definition of a derivative instrument under ASC 815, but are eligible for the scope exception as they are indexed to the Company’s own stock and would be classified in permanent equity if freestanding. Warrants Classified as Liabilities Liability-classified warrants consist of warrants to acquire common stock which may be settled in cash and were determined not to be indexed to the Company’s common stock. The estimated fair value of outstanding warrants accounted for as liabilities is determined at each balance sheet date, and any decrease or increase in estimated fair value is recorded in the consolidated statement of operations as change in fair value of warrant liability. The fair value of the warrants is estimated using a Black-Scholes pricing model with the following inputs: September 30, 2022 December 31, 2021 Risk-free interest rate 4.05 % 0.65 % Volatility 89.94 % 131.04 % Expected term (years) 1.00 1.75 Expected dividend yield — % — % Strike price $ 7.50 $ 7.50 The expected volatility assumption is based on the Company's implied volatility. The expected term assumption is based on the remaining contractual terms of the warrants. The risk-free rate is based on the zero coupon rates in effect at the time of valuation. The dividend yield used in the pricing model is zero, because the Company has no present intention to pay cash dividends. The changes in fair value of the warrant liability for the nine months ended September 30, 2022 were as follows (in thousands): Warrant liability, December 31, 2021 $ 40 Change in fair value of warrants (39) Warrant liability, September 30, 2022 $ 1 |
License Revenue
License Revenue | 9 Months Ended |
Sep. 30, 2022 | |
Revenue from Contract with Customer [Abstract] | |
License Revenue | License Revenue Exclusive License Agreement with 3D Medicines Inc. In December 2020, the Company, together with its wholly-owned subsidiary, SLSG Limited, LLC, entered into the 3DMed License Agreement with 3DMed, pursuant to which the Company granted 3DMed a sublicensable, royalty-bearing license, under certain intellectual property owned or controlled by the Company, to develop, manufacture and have manufactured, and commercialize GPS and heptavalent GPS (referred to as GPS Plus) product candidates ("GPS Licensed Products") for all therapeutic and other diagnostic uses in the 3DMed Territory. The license is exclusive except with respect to certain know-how that has been non-exclusively licensed to the Company and is sublicensed to 3DMed on a non-exclusive basis. The Company has retained development, manufacturing and commercialization rights with respect to the GPS Licensed Products in the rest of the world. In partial consideration for the rights granted by the Company, 3DMed agreed to pay the Company (i) a one-time upfront cash payment of $7.5 million, and (ii) milestone payments totaling up to $194.5 million in the aggregate upon the achievement of certain technology transfer, development and regulatory milestones, as well as sales milestones based on certain net sales thresholds of GPS Licensed Products in the 3DMed Territory in a given calendar year. 3DMed also agreed to pay tiered royalties based upon a percentage of annual net sales of GPS Licensed Products in the 3DMed Territory ranging from the high single digits to the low double digits. The Company determined the initial transaction price of the single performance obligation to be $9.5 million, which included the $7.5 million upfront fee as well as $2.0 million in development milestones that were assessed as probable of being achieved at the inception of the 3DMed License Agreement and therefore were not constrained. As of December 31, 2021, the full $9.5 million initial transaction price was fully recognized as licensing revenue. The Company determined that the remaining $192.5 million in certain future development, regulatory, and sales milestones is variable consideration subject to constraint at inception. At the end of each reporting period, the Company reevaluates the probability of achievement of the future development, regulatory, and sales milestones subject to constraint and, if necessary, will adjust its estimate of the overall transaction price. Any such adjustments will be recorded on a cumulative catch-up basis, which would affect revenues and earnings in the period of adjustment. On March 31, 2022, the Company announced that an IND application filed by 3DMed for a small Phase 1 clinical trial investigating safety of GPS in China was approved by China's NMPA. The IND approval by the NMPA triggered a $1.0 million milestone payment to the Company which was recognized as licensing revenue in the first quarter of 2022 and payment was received in May 2022. An additional $191.5 million in potential future development, regulatory, and sales milestones, not including future royalties, remains under the 3DMed License Agreement as of September 30, 2022, which milestones are variable in nature and not under the Company's control. For the sales-based royalties, the Company will recognize revenue when the related sales occur. To date, the Company has not recognized any royalty revenue resulting from any of its licensing arrangements. There was no license revenue recognized during each of the three months ended September 30, 2022 and 2021. There was $1.0 million and $7.6 million in license revenue recognized during the nine months ended September 30, 2022 and 2021, respectively. |
Stock-Based Compensation
Stock-Based Compensation | 9 Months Ended |
Sep. 30, 2022 | |
Share-Based Payment Arrangement [Abstract] | |
Stock-Based Compensation | Stock-Based Compensation 2017 Equity Incentive Plan On December 29, 2017, the 2017 Equity Incentive Plan was approved by the stockholders of the Company, which currently allows for issuance of up to approximately 22,000 shares of common stock underlying stock options granted prior to September 10, 2019. The 2017 Equity Incentive Plan was terminated upon the approval of the 2019 Incentive Plan subject to outstanding stock options granted under the 2017 Equity Incentive Plan that remain exercisable through maturity for the Company's employees and directors. 2019 Equity Incentive Plan On September 10, 2019, the 2019 Equity Incentive Plan was approved by the stockholders of the Company, which currently allows for issuance of up to approximately 1,964,000 shares of common stock in connection with the grant of stock-based awards, including stock options, restricted stock, restricted stock units, stock appreciation rights and other types of awards as deemed appropriate. The number of shares reserved for issuance under the 2019 Equity Incentive Plan will automatically increase on January 1 of each year, for a period of not more than four years, commencing on January 1, 2020 and ending on (and including) January 1, 2023, by an amount equal to the lesser of (i) 5% of the total number of shares of common stock outstanding at the end of the prior fiscal year; and (ii) an amount determined by the board of directors or authorized committee. As of September 30, 2022, approximately 608,000 shares of common stock were reserved for future grants under the 2019 Equity Incentive Plan. The following table summarizes the components of stock-based compensation expense in the consolidated statements of operations for the three and nine months ended September 30, 2022 and 2021, respectively (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Research and development $ 72 $ 36 $ 197 $ 84 General and administrative 383 239 1,083 639 Total stock-based compensation $ 455 $ 275 $ 1,280 $ 723 Options to Purchase Shares of Common Stock The following table summarizes stock option activity of the Company for the nine months ended September 30, 2022: Total Weighted Weighted Average Remaining Contractual Term (In Years) Aggregate Outstanding at December 31, 2021 534 $ 10.09 8.77 $ 681 Granted 543 5.01 Canceled (6) 2.28 Outstanding at September 30, 2022 1,071 $ 7.56 8.73 $ 28 Options exercisable at September 30, 2022 282 $ 12.89 7.85 $ 18 The aggregate intrinsic values of outstanding and exercisable stock options at September 30, 2022 were calculated based on the closing price of the Company’s common stock as reported on the Nasdaq Capital Market on September 30, 2022 of $2.02 per share. The aggregate intrinsic value equals the positive difference between the closing fair market value of the Company’s common stock and the exercise price of the underlying stock options. The Company uses the Black-Scholes option-pricing model to determine the fair value of all its stock options granted. The weighted average assumptions used during the three and nine months ended September 30, 2022 and 2021, respectively, were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Risk-free interest rate 3.00 % 1.01 % 1.95 % 1.04 % Volatility 138.57 % 124.63 % 131.54 % 121.29 % Expected term (years) 6.03 6.25 6.18 6.18 Expected dividend yield — % — % — % — % The weighted-average grant date fair value of options granted during the three months ended September 30, 2022 and 2021 was $2.78 and $8.09, respectively. The weighted-average grant date fair value of options granted during the nine months ended September 30, 2022 and 2021 was $4.52 and $6.99, respectively. The Company’s expected common stock price volatility assumption is based upon the Company's own implied volatility in combination with the implied volatility of a basket of comparable companies. The expected life assumptions for employee grants were based upon the simplified method, which averages the contractual term of the Company’s options of ten years with the average vesting term of four years for an average of approximately six years. The expected life assumptions for non-employees were based upon the contractual term of the option. The dividend yield assumption is zero because the Company has never paid cash dividends and presently has no intention to do so. The risk-free interest rate used for each grant was also based upon prevailing short-term interest rates. The Company accounts for forfeitures as they occur. As of September 30, 2022, there was $3.4 million of unrecognized compensation cost related to outstanding stock options that is expected to be recognized as a component of the Company’s operating expenses over a weighted-average period of 2.72 years. Time-vested RSUs and RSUs with Performance Conditions The following table summarizes RSU activity of the Company for the nine months ended September 30, 2022: Shares Weighted Average Grant Date Fair Value Unvested at December 31, 2021 200 $ 2.81 Granted 97 $ 5.34 Unvested at September 30, 2022 297 $ 3.64 As of September 30, 2022, there was $0.9 million of unrecognized compensation cost related to outstanding RSUs that is expected to be recognized as a component of the Company's operating expenses over a weighted-average period of 2.25 years. No RSUs vested during the nine months ended September 30, 2022. 2021 Employee Stock Purchase Plan On April 22, 2021, the Board of Directors adopted the 2021 Employee Stock Purchase Plan ("2021 ESPP") which was approved by the Company's stockholders on June 8, 2021. The 2021 ESPP allows employees to contribute up to 20% of their cash earnings, subject to a maximum of $25,000 per year under Internal Revenue Service rules, to be used to purchase shares of the Company’s common stock on semi-annual purchase dates. The 2021 ESPP allows eligible employees to purchase shares of common stock at a price per share equal to 85% of the lower of the fair market value of the common stock at the beginning or end of each six-month offering period during the term of the 2021 ESPP. During the nine months ended September 30, 2022, 25,089 shares of common stock were purchased by employees under the 2021 ESPP for proceeds of approximately $0.1 million. During the three months ended September 30, 2022, 14,727 shares of common stock were purchased by employees under the 2021 ESPP for proceeds of approximately $38,000. There are currently 274,911 shares of common stock reserved for issuance under the 2021 ESPP as of September 30, 2022. |
Subsequent Events
Subsequent Events | 9 Months Ended |
Sep. 30, 2022 | |
Subsequent Events [Abstract] | |
Subsequent Events | Subsequent EventsThe Company evaluated all events or transactions that occurred after September 30, 2022 up through the date these financial statements were issued. Other than as disclosed elsewhere in the notes to the consolidated financial statements, the Company did not have any material subsequent events. |
Basis of Presentation and Sig_2
Basis of Presentation and Significant Accounting Policies (Policies) | 9 Months Ended |
Sep. 30, 2022 | |
Accounting Policies [Abstract] | |
Basis of Presentation | Basis of Presentation The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”). Any reference in these notes to applicable guidance is meant to refer to U.S. GAAP as found in the ASC and Accounting Standards Updates ("ASUs") of the Financial Accounting Standards Board ("FASB"). |
Principles of Consolidation | Principles of Consolidation The consolidated financial statements include the financial statements of the Company and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated upon consolidation. Unless the context otherwise indicates, reference in these notes to the "Company" refer to SELLAS Life Sciences Group, Inc., and its wholly owned subsidiaries, SELLAS Life Sciences Group, Ltd., a privately held Bermuda exempted company, SLSG Limited, LLC, Sellas Life Sciences Limited, and Apthera, Inc. |
Acquired In-Process Research and Development | Acquired In-Process Research and Development Costs incurred in obtaining technology licenses are immediately recognized as acquired in-process research and development expense, provided the technology licensed has no alternative future use. Payments related to contingent consideration such as development milestones, commercial milestones and royalties (Note 5) will be recognized when the contingency is probable and reasonably estimable as prescribed by ASC 450, Contingencies |
Net Loss Per Share | Net Loss Per Share Net loss per share is computed by dividing net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding during each period. Diluted loss per share includes the effect, if any, from the potential exercise or conversion of securities, such as warrants, stock options and unvested restricted stock that would result in the issuance of incremental shares of common stock. In computing the basic and diluted net loss per share, the weighted average number of shares remains the same for both calculations due to the fact that, when a net loss exists, dilutive shares are not included in the calculation as the impact is anti-dilutive. |
Recent Accounting Standards Adopted and Recent Accounting Standards Not Yet Adopted | Recent Accounting Standards Adopted In May 2021, the FASB issued ASU No. 2021-04, Issuer’s Accounting for Certain Modifications of Exchanges of Freestanding Equity-Classified Written Call Options to clarify the accounting for modifications or exchanges of freestanding equity-classified written call options, such as warrants, that remain equity classified after modification or exchange. This ASU became effective for the Company on January 1, 2022 and did not have a material impact on the Company's consolidated financial statements. Recent Accounting Standards Not Yet Adopted In August 2020, the FASB issued ASU No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity which, among other things, simplifies the accounting models for the allocation of proceeds attributable to the issuance of a convertible debt instrument. As a result, after adopting the ASU’s guidance, entities will not separately present in equity an embedded conversion feature in such debt. Instead, they will account for a convertible debt instrument wholly as debt, and for convertible preferred stock wholly as preferred stock (i.e., as a single unit of account), unless (i) a convertible instrument contains features that require bifurcation as a derivative under ASC 815 or (ii) a convertible debt instrument was issued at a substantial premium. The standard becomes effective for the Company in the first quarter of 2024 and early adoption is permitted. The Company is currently evaluating the potential impact of the adoption of this standard on its consolidated financial statements. |
Basis of Presentation and Sig_3
Basis of Presentation and Significant Accounting Policies (Tables) | 9 Months Ended |
Sep. 30, 2022 | |
Accounting Policies [Abstract] | |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | The following potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding, as they would be anti-dilutive (in thousands): As of September 30, 2022 2021 Common stock warrants 5,148 558 Stock options 1,071 526 Restricted stock units ("RSUs") 297 210 6,516 1,294 |
Fair Value Measurements (Tables
Fair Value Measurements (Tables) | 9 Months Ended |
Sep. 30, 2022 | |
Fair Value Disclosures [Abstract] | |
Schedule of Assets and Liabilities Measured at Fair Value | The following tables present information about the Company's assets and liabilities measured at fair value on a recurring basis in the consolidated balance sheets (in thousands): Description September 30, 2022 Quoted Prices In Significant Other Unobservable Assets: Cash equivalents $ 20,967 $ 20,967 $ — $ — Restricted cash equivalents 100 100 — — Total assets measured and recorded at fair value $ 21,067 $ 21,067 $ — $ — Liabilities: Warrant liability $ 1 $ — $ — $ 1 Contingent consideration 170 — — 170 Total liabilities measured and recorded at fair value $ 171 $ — $ — $ 171 Description December 31, 2021 Quoted Prices In Significant Other Unobservable Assets: Cash equivalents $ 21,000 $ 21,000 $ — $ — Restricted cash equivalents 100 100 — — Total assets measured and recorded at fair value $ 21,100 $ 21,100 $ — $ — Liabilities: Warrant liability $ 40 $ — $ — $ 40 Contingent consideration 296 — — 296 Total liabilities measured and recorded at fair value $ 336 $ — $ — $ 336 |
Schedule of Reconciliation of Level 3 Liabilities | A reconciliation of the change in the fair value of the contingent consideration liability for the nine months ended September 30, 2022 is as follows (in thousands): Fair Value Measurements Contingent consideration, December 31, 2021 $ 296 Change in the fair value of the contingent consideration (126) Contingent consideration, September 30, 2022 $ 170 |
Schedule of Fair Value Measurement Inputs and Valuation Techniques | The following significant unobservable inputs were used in the valuation of the contingent consideration liability: As of September 30, 2022 As of December 31, 2021 Potential milestone payments $0 - $30 million $0 - $30 million Discount rate 16.8 % 15.5 % Cumulative probability of success 5.3 % 5.3 % Projected years of payments 2028 - 2031 2028 - 2031 |
Balance Sheet Accounts (Tables)
Balance Sheet Accounts (Tables) | 9 Months Ended |
Sep. 30, 2022 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Schedule of Prepaid Expenses and Other Current Assets | Prepaid expenses and other current assets consist of the following (in thousands): September 30, 2022 December 31, 2021 Insurance $ 667 $ 217 Clinical development 316 1,309 Professional fees 127 36 Other 47 27 Prepaid expenses and other current assets $ 1,157 $ 1,589 |
Schedule of Accrued Expenses and Other Current Liabilities | Accrued expenses and other current liabilities consist of the following (in thousands): September 30, 2022 December 31, 2021 Clinical trial costs $ 2,947 $ 1,325 Compensation and related benefits 1,228 989 Professional fees 203 165 Other 192 161 Accrued expenses and other current liabilities $ 4,570 $ 2,640 |
Commitments and Contingencies (
Commitments and Contingencies (Tables) | 9 Months Ended |
Sep. 30, 2022 | |
Commitments and Contingencies Disclosure [Abstract] | |
Schedule of Future Minimum Lease Payments | Future minimum lease payments are as follows as of September 30, 2022 (in thousands): Future minimum lease payments: 2022 (remaining) $ 127 2023 518 2024 533 Total future minimum lease payments 1,178 Less: imputed interest (142) Current and non-current operating lease liabilities $ 1,036 |
Stockholders' Equity (Tables)
Stockholders' Equity (Tables) | 9 Months Ended |
Sep. 30, 2022 | |
Equity [Abstract] | |
Schedule of Common Stock Reserved for Future Issuance | As of September 30, 2022, the Company has shares of common stock reserved for future issuance as follows (in thousands): Warrants outstanding 5,148 Stock options outstanding 1,071 RSUs outstanding 297 Shares reserved for future issuance under the Company’s 2019 Equity Incentive Plan 608 Shares reserved for future issuance under the 2021 Employee Stock Purchase Plan 275 Total common stock reserved for future issuance 7,399 |
Warrants to Acquire Shares of_2
Warrants to Acquire Shares of Common Stock (Tables) | 9 Months Ended |
Sep. 30, 2022 | |
Warrants and Rights Note Disclosure [Abstract] | |
Schedule of Warrant Activity | The following is a summary of the activity of the Company's warrants to acquire shares of common stock for the nine months ended September 30, 2022 (in thousands): Warrant Issuance Outstanding, December 31, 2021 Granted Canceled/Expired Outstanding, September 30, 2022 Exercise Price per Share Expiration Warrants classified as equity: April 2022 Offering — 4,630 — 4,630 $ 5.40 April 2027 January 2020 Offering 309 — — 309 $ 3.93 July 2025 July 2020 PIPE Offering 25 — — 25 $ 3.30 August 2025 July 2018 Offering 132 — — 132 $ 7.50 July 2023 March 2019 Exercise Agreement 30 — — 30 $ 7.50 March 2024 Other 9 — — 9 $ 306.66 December 2022 - June 2024 505 4,630 — 5,135 Warrants classified as liability 14 — (1) 13 $ 7.50 September 2023 - November 2023 519 4,630 (1) 5,148 |
Schedule of Fair Value of Warrants is Estimated Using Black-Scholes Option Pricing Model | The fair value of the warrants is estimated using a Black-Scholes pricing model with the following inputs: September 30, 2022 December 31, 2021 Risk-free interest rate 4.05 % 0.65 % Volatility 89.94 % 131.04 % Expected term (years) 1.00 1.75 Expected dividend yield — % — % Strike price $ 7.50 $ 7.50 |
Schedule of Changes in Fair Value of Warrant Liability | The changes in fair value of the warrant liability for the nine months ended September 30, 2022 were as follows (in thousands): Warrant liability, December 31, 2021 $ 40 Change in fair value of warrants (39) Warrant liability, September 30, 2022 $ 1 |
Stock-Based Compensation (Table
Stock-Based Compensation (Tables) | 9 Months Ended |
Sep. 30, 2022 | |
Share-Based Payment Arrangement [Abstract] | |
Schedule of Allocated Stock-based Compensation Expense | The following table summarizes the components of stock-based compensation expense in the consolidated statements of operations for the three and nine months ended September 30, 2022 and 2021, respectively (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Research and development $ 72 $ 36 $ 197 $ 84 General and administrative 383 239 1,083 639 Total stock-based compensation $ 455 $ 275 $ 1,280 $ 723 |
Schedule of Stock Option Activity | The following table summarizes stock option activity of the Company for the nine months ended September 30, 2022: Total Weighted Weighted Average Remaining Contractual Term (In Years) Aggregate Outstanding at December 31, 2021 534 $ 10.09 8.77 $ 681 Granted 543 5.01 Canceled (6) 2.28 Outstanding at September 30, 2022 1,071 $ 7.56 8.73 $ 28 Options exercisable at September 30, 2022 282 $ 12.89 7.85 $ 18 |
Schedule of Assumptions for Option Grants Issued | The Company uses the Black-Scholes option-pricing model to determine the fair value of all its stock options granted. The weighted average assumptions used during the three and nine months ended September 30, 2022 and 2021, respectively, were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Risk-free interest rate 3.00 % 1.01 % 1.95 % 1.04 % Volatility 138.57 % 124.63 % 131.54 % 121.29 % Expected term (years) 6.03 6.25 6.18 6.18 Expected dividend yield — % — % — % — % |
Schedule of RSU Activity | The following table summarizes RSU activity of the Company for the nine months ended September 30, 2022: Shares Weighted Average Grant Date Fair Value Unvested at December 31, 2021 200 $ 2.81 Granted 97 $ 5.34 Unvested at September 30, 2022 297 $ 3.64 |
Liquidity (Details)
Liquidity (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | ||||
Sep. 30, 2022 | Apr. 16, 2021 | May 31, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021 | |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] | ||||||||
Accumulated deficit | $ 170,783 | $ 170,783 | $ 170,783 | $ 138,603 | ||||
Net loss | 7,022 | $ 7,085 | 32,180 | $ 14,101 | ||||
Acquired in-process research and development expense | $ 0 | $ 0 | 10,000 | 0 | ||||
Net cash used in operating activities | $ 18,657 | $ 21,045 | ||||||
Shares of common stock reserved for issuance (in shares) | 7,399,000 | 7,399,000 | 7,399,000 | |||||
Upfront fee and milestone payments | $ 10,500 | |||||||
Milestone payment received | $ 1,000 | 13,000 | ||||||
Potential milestone payments to be received | $ 191,500 | 191,500 | 192,500 | |||||
Cash and cash equivalents | 21,348 | $ 21,348 | 21,348 | 21,355 | ||||
Restricted cash and cash equivalents | $ 100 | $ 100 | $ 100 | $ 100 | ||||
Sales Agreement | ||||||||
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] | ||||||||
Sale of shares, common stock gross proceeds | $ 50,000 | |||||||
Percentage gross proceeds from the sale of shares (as a percent) | 3% | |||||||
Number of shares of stock (in shares) | 37,891 | 786,927 | ||||||
Stock price per share (in dollars per share) | $ 3.25 | $ 3.25 | $ 3.25 | $ 12.04 | ||||
Net proceeds of common stock | $ 100 | $ 9,000 | ||||||
Shares of common stock reserved for issuance (in shares) | 40,400,000 | 40,400,000 | 40,400,000 |
Basis of Presentation and Sig_4
Basis of Presentation and Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares shares in Thousands | 9 Months Ended | |
Sep. 30, 2022 | Sep. 30, 2021 | |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
Antidilutive securities (in shares) | 6,516 | 1,294 |
Common stock warrants | ||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
Antidilutive securities (in shares) | 5,148 | 558 |
Stock options | ||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
Antidilutive securities (in shares) | 1,071 | 526 |
Restricted stock units ("RSUs") | ||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
Antidilutive securities (in shares) | 297 | 210 |
Fair Value Measurements - Conti
Fair Value Measurements - Contingent Purchase Price Consideration, Measured at Estimated Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021 |
Liabilities: | ||
Warrant liability | $ 1 | $ 40 |
Fair Value, Measurements, Recurring | ||
Assets: | ||
Cash equivalents | 20,967 | 21,000 |
Restricted cash equivalents | 100 | 100 |
Total assets measured and recorded at fair value | 21,067 | 21,100 |
Liabilities: | ||
Warrant liability | 1 | 40 |
Contingent consideration | 170 | 296 |
Total liabilities measured and recorded at fair value | 171 | 336 |
Fair Value, Measurements, Recurring | Quoted Prices In Active Markets (Level 1) | ||
Assets: | ||
Cash equivalents | 20,967 | 21,000 |
Restricted cash equivalents | 100 | 100 |
Total assets measured and recorded at fair value | 21,067 | 21,100 |
Liabilities: | ||
Warrant liability | 0 | 0 |
Contingent consideration | 0 | 0 |
Total liabilities measured and recorded at fair value | 0 | 0 |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | ||
Assets: | ||
Cash equivalents | 0 | 0 |
Restricted cash equivalents | 0 | 0 |
Total assets measured and recorded at fair value | 0 | 0 |
Liabilities: | ||
Warrant liability | 0 | 0 |
Contingent consideration | 0 | 0 |
Total liabilities measured and recorded at fair value | 0 | 0 |
Fair Value, Measurements, Recurring | Unobservable Inputs (Level 3) | ||
Assets: | ||
Cash equivalents | 0 | 0 |
Restricted cash equivalents | 0 | 0 |
Total assets measured and recorded at fair value | 0 | 0 |
Liabilities: | ||
Warrant liability | 1 | 40 |
Contingent consideration | 170 | 296 |
Total liabilities measured and recorded at fair value | $ 171 | $ 336 |
Fair Value Measurements - Recon
Fair Value Measurements - Reconciliation of Level 3 Liabilities (Details) - Unobservable Inputs (Level 3) $ in Thousands | 9 Months Ended |
Sep. 30, 2022 USD ($) | |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | |
Contingent consideration, beginning balance | $ 296 |
Change in the fair value of the contingent consideration | (126) |
Contingent consideration, ending balance | $ 170 |
Fair Value Measurements - Narra
Fair Value Measurements - Narrative (Details) - Apthera, Inc. | 9 Months Ended |
Sep. 30, 2022 USD ($) | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Contingent consideration payable, maximum amount | $ 32,000,000 |
Contingent consideration paid | 2,000,000 |
Contingent consideration | $ 30,000,000 |
Fair Value Measurements - Fair
Fair Value Measurements - Fair Value Measurement Inputs and Valuation Techniques (Details) - Apthera | Sep. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||
Contingent consideration payable, minimum amount | $ 0 | $ 0 |
Contingent consideration payable, maximum amount | $ 30,000,000 | $ 30,000,000 |
Discount rate | ||
Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||
Business combination, contingent consideration, measurement input (as a percent) | 0.168 | 0.155 |
Cumulative probability of success | ||
Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||
Business combination, contingent consideration, measurement input (as a percent) | 0.053 | 0.053 |
Acquired In-Process Research _2
Acquired In-Process Research and Development (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended | |||
Mar. 31, 2022 | Apr. 30, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | |
License And Collaboration Agreements [Line Items] | ||||||
Cash paid for acquisition of in-process research and development | $ 4,500,000 | $ 0 | ||||
Acquired in-process research and development expense | $ 0 | $ 0 | 10,000,000 | $ 0 | ||
GenFleet Therapeutics (Shanghai) Inc | ||||||
License And Collaboration Agreements [Line Items] | ||||||
Upfront fee | $ 10,000,000 | |||||
Cash paid for acquisition of in-process research and development | $ 4,500,000 | |||||
Acquired in-process research and development payable, non-current | 5,500,000 | $ 5,500,000 | 5,500,000 | |||
Eligible payment from collaboration for development and regulatory milestone achievement under collaborations agreement | 48,000,000 | |||||
Maximum amount eligible for milestones under collaborations agreement | $ 92,000,000 | |||||
Acquired in-process research and development expense | $ 10,000,000 |
Balance Sheet Accounts - Prepai
Balance Sheet Accounts - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021 |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
Insurance | $ 667 | $ 217 |
Clinical development | 316 | 1,309 |
Professional fees | 127 | 36 |
Other | 47 | 27 |
Prepaid expenses and other current assets | $ 1,157 | $ 1,589 |
Balance Sheet Accounts - Accrue
Balance Sheet Accounts - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021 |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
Clinical trial costs | $ 2,947 | $ 1,325 |
Compensation and related benefits | 1,228 | 989 |
Professional fees | 203 | 165 |
Other | 192 | 161 |
Accrued expenses and other current liabilities | $ 4,570 | $ 2,640 |
Commitments and Contingencies -
Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | |
Commitments and Contingencies Disclosure [Abstract] | ||||
Operating lease, discount rate (as a percent) | 13.95% | 13.95% | ||
Operating lease, remaining term | 2 years 3 months | |||
Rent expense | $ 0.1 | $ 0.1 | $ 0.3 | $ 0.2 |
Cash payments related to operating lease | $ 0.1 | $ 0.1 | $ 0.3 | $ 0.2 |
Commitments and Contingencies_2
Commitments and Contingencies - Maturities of Lease Liabilities - 842 (Details) $ in Thousands | Sep. 30, 2022 USD ($) |
Commitments and Contingencies Disclosure [Abstract] | |
2022 (remaining) | $ 127 |
2023 | 518 |
2024 | 533 |
Total future minimum lease payments | 1,178 |
Less: imputed interest | (142) |
Current and non-current operating lease liabilities | $ 1,036 |
Stockholders' Equity - Narrativ
Stockholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | Apr. 05, 2022 | Sep. 30, 2022 | Dec. 31, 2021 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Preferred stock, shares authorized (in shares) | 5,000,000 | 5,000,000 | |
Preferred stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 | |
Preferred stock, shares outstanding (in shares) | 0 | 0 | |
Common stock, shares authorized (in shares) | 350,000,000 | 350,000,000 | |
Common stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 | |
Underwriting Agreement | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Number of shares of stock (in shares) | 4,629,630 | ||
Common stock to be called by warrants (in shares) | 4,629,630 | ||
Offering (in dollars per share) | $ 5.40 | ||
Number of securities called by each warrant | 1 | ||
Exercise price (in dollars per share) | $ 5.40 | ||
Warrant term | 5 years | ||
Net proceeds of common stock | $ 23 |
Stockholders' Equity - Common S
Stockholders' Equity - Common Stock are Reserved for Future Issuance (Details) - shares shares in Thousands | Sep. 30, 2022 | Dec. 31, 2021 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Warrants outstanding (in shares) | 5,148 | 519 |
Stock options outstanding (in shares) | 1,071 | 534 |
Total common stock reserved for future issuance (in shares) | 7,399 | |
2019 Equity Incentive Plan | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Shares reserved for future issuance (in shares) | 608 | |
2021 ESPP | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Shares reserved for future issuance (in shares) | 275 | |
Restricted stock units ("RSUs") | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
RSUs outstanding (in shares) | 297 | 200 |
Warrants to Acquire Shares of_3
Warrants to Acquire Shares of Common Stock - Warrants Outstanding (Details) shares in Thousands | 9 Months Ended |
Sep. 30, 2022 $ / shares shares | |
Class of Warrant or Right, Outstanding [Roll Forward] | |
Outstanding, beginning of period (in shares) | 519 |
Granted (in shares) | 4,630 |
Canceled/Expired (in shares) | (1) |
Outstanding, end of period (in shares) | 5,148 |
Common stock warrants | |
Class of Warrant or Right, Outstanding [Roll Forward] | |
Outstanding, beginning of period (in shares) | 505 |
Granted (in shares) | 4,630 |
Canceled/Expired (in shares) | 0 |
Outstanding, end of period (in shares) | 5,135 |
April 2022 Offering | Common stock warrants | |
Class of Warrant or Right, Outstanding [Roll Forward] | |
Outstanding, beginning of period (in shares) | 0 |
Granted (in shares) | 4,630 |
Canceled/Expired (in shares) | 0 |
Outstanding, end of period (in shares) | 4,630 |
Exercise price (in dollars per share) | $ / shares | $ 5.40 |
January 2020 Offering | Common stock warrants | |
Class of Warrant or Right, Outstanding [Roll Forward] | |
Outstanding, beginning of period (in shares) | 309 |
Granted (in shares) | 0 |
Canceled/Expired (in shares) | 0 |
Outstanding, end of period (in shares) | 309 |
Exercise price (in dollars per share) | $ / shares | $ 3.93 |
July 2020 PIPE Offering | Common stock warrants | |
Class of Warrant or Right, Outstanding [Roll Forward] | |
Outstanding, beginning of period (in shares) | 25 |
Granted (in shares) | 0 |
Canceled/Expired (in shares) | 0 |
Outstanding, end of period (in shares) | 25 |
Exercise price (in dollars per share) | $ / shares | $ 3.30 |
July 2018 Offering | Common stock warrants | |
Class of Warrant or Right, Outstanding [Roll Forward] | |
Outstanding, beginning of period (in shares) | 132 |
Granted (in shares) | 0 |
Canceled/Expired (in shares) | 0 |
Outstanding, end of period (in shares) | 132 |
Exercise price (in dollars per share) | $ / shares | $ 7.50 |
March 2019 Exercise Agreement | Common stock warrants | |
Class of Warrant or Right, Outstanding [Roll Forward] | |
Outstanding, beginning of period (in shares) | 30 |
Granted (in shares) | 0 |
Canceled/Expired (in shares) | 0 |
Outstanding, end of period (in shares) | 30 |
Exercise price (in dollars per share) | $ / shares | $ 7.50 |
Other | Common stock warrants | |
Class of Warrant or Right, Outstanding [Roll Forward] | |
Outstanding, beginning of period (in shares) | 9 |
Granted (in shares) | 0 |
Canceled/Expired (in shares) | 0 |
Outstanding, end of period (in shares) | 9 |
Exercise price (in dollars per share) | $ / shares | $ 306.66 |
Warrants classified as liability | |
Class of Warrant or Right, Outstanding [Roll Forward] | |
Outstanding, beginning of period (in shares) | 14 |
Granted (in shares) | 0 |
Canceled/Expired (in shares) | (1) |
Outstanding, end of period (in shares) | 13 |
Exercise price (in dollars per share) | $ / shares | $ 7.50 |
Warrants to Acquire Shares of_4
Warrants to Acquire Shares of Common Stock - Fair Value of Warrants is Estimated Using Black-Scholes Option Pricing Model (Details) | Sep. 30, 2022 | Dec. 31, 2021 |
Risk-free interest rate | ||
Class of Warrant or Right [Line Items] | ||
Warrants, measurement input | 0.0405 | 0.0065 |
Volatility | ||
Class of Warrant or Right [Line Items] | ||
Warrants, measurement input | 0.8994 | 1.3104 |
Expected term (years) | ||
Class of Warrant or Right [Line Items] | ||
Warrants, measurement input | 1 | 1.75 |
Expected dividend yield | ||
Class of Warrant or Right [Line Items] | ||
Warrants, measurement input | 0 | 0 |
Strike price | ||
Class of Warrant or Right [Line Items] | ||
Warrants, measurement input | 7.50 | 7.50 |
Warrants to Acquire Shares of_5
Warrants to Acquire Shares of Common Stock - Narrative (Details) | Sep. 30, 2022 | Dec. 31, 2021 |
Coupon rate | ||
Class of Warrant or Right [Line Items] | ||
Warrants, measurement input | 0 | |
Expected dividend yield | ||
Class of Warrant or Right [Line Items] | ||
Warrants, measurement input | 0 | 0 |
Warrants to Acquire Shares of_6
Warrants to Acquire Shares of Common Stock - Changes in Fair Value of Warrant Liability (Details) $ in Thousands | 9 Months Ended |
Sep. 30, 2022 USD ($) | |
Class of Warrant or Right, Fair Value [Roll Forward] | |
Warrant liability, December 31, 2021 | $ 40 |
Change in fair value of warrants | (39) |
Warrant liability, September 30, 2022 | $ 1 |
License Revenue - Narrative (De
License Revenue - Narrative (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | |||||
Sep. 30, 2022 | May 31, 2022 | Dec. 31, 2020 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021 | Dec. 13, 2020 | |
Revenue from Contract with Customer [Abstract] | |||||||||
Upfront cash payment received | $ 7,500,000 | ||||||||
Future milestone payments received | 194,500,000 | ||||||||
Performance obligation, amount | $ 9,500,000 | ||||||||
Milestones probable of being achieved | $ 2,000,000 | ||||||||
Deferred revenue recognized license | $ 9,500,000 | ||||||||
Potential milestone payments to be received | $ 191,500,000 | $ 191,500,000 | $ 192,500,000 | ||||||
Milestone payment received | $ 1,000,000 | 13,000,000 | |||||||
Licensing revenue | $ 0 | $ 0 | 1,000,000 | $ 7,600,000 | |||||
Cost of licensing revenue | $ 0 | $ 0 | $ 100,000 | $ 200,000 |
Stock-Based Compensation - Narr
Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended | |||||
Apr. 22, 2021 | Sep. 10, 2019 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 29, 2017 | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||
Shares of common stock reserved for issuance (in shares) | 7,399,000 | 7,399,000 | |||||
Closing price of the Company's common stock (in dollars per share) | $ 2.02 | $ 2.02 | |||||
Weighted average exercise price, granted (in dollars per share) | $ 2.78 | $ 8.09 | $ 4.52 | $ 6.99 | |||
Averages contractual term | 10 years | ||||||
Expected dividend yield (as a percent) | 0% | 0% | 0% | 0% | |||
Unrecognized compensation cost, options | $ 3,400 | $ 3,400 | |||||
Operating expenses weighted average period | 2 years 8 months 19 days | ||||||
Proceeds from employee stock purchases | $ 85 | $ 0 | |||||
Restricted stock units ("RSUs") | |||||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||
Weighted average exercise price, granted (in dollars per share) | $ 5.34 | ||||||
Operating expenses weighted average period | 2 years 3 months | ||||||
Unrecognized compensation cost | $ 900 | $ 900 | |||||
RSUs vested (in shares) | 0 | ||||||
Maximum | |||||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||
Average vesting term | 6 years | ||||||
Minimum | |||||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||
Average vesting term | 4 years | ||||||
2017 Equity Incentive Plan | Maximum | |||||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||
Shares of common stock authorized for issuance (in shares) | 22,000 | ||||||
2019 Equity Incentive Plan | |||||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||
Shares of common stock authorized for issuance (in shares) | 1,964,000 | ||||||
Option term | 4 years | ||||||
Increase in number of shares available for future issuance under stock based awards (as a percent) | 5% | ||||||
Shares of common stock reserved for issuance (in shares) | 608,000 | 608,000 | |||||
2021 ESPP | Employee Stock | |||||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||
Shares of common stock reserved for issuance (in shares) | 274,911 | 274,911 | |||||
Cash earnings contributed per year | 20% | ||||||
Purchase price of common stock | 85% | ||||||
Offering period | 6 months | ||||||
Share-based compensation arrangement by share-based payment award, shares purchased for award | 14,727 | 25,089 | |||||
Proceeds from employee stock purchases | $ 38 | $ 100 |
Stock-Based Compensation - Allo
Stock-Based Compensation - Allocated Stock-based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
Allocated share based compensation expense | $ 455 | $ 275 | $ 1,280 | $ 723 |
Research and development | ||||
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
Allocated share based compensation expense | 72 | 36 | 197 | 84 |
General and administrative | ||||
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
Allocated share based compensation expense | $ 383 | $ 239 | $ 1,083 | $ 639 |
Stock-Based Compensation - Stoc
Stock-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 9 Months Ended | 12 Months Ended |
Sep. 30, 2022 | Dec. 31, 2021 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] | ||
Options outstanding, beginning balance (in shares) | 534,000 | |
Granted (in shares) | 543,000 | |
Canceled (in shares) | (6,000) | |
Options outstanding, ending balance (in shares) | 1,071,000 | 534,000 |
Options exercisable (in shares) | 282,000 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] | ||
Weighted average exercise price, beginning balance (in dollars per share) | $ 10.09 | |
Weighted average exercise price, granted (in dollars per share) | 5.01 | |
Weighted average exercise price, canceled (in dollars per share) | 2.28 | |
Weighted average exercise price, ending balance (in dollars per share) | 7.56 | $ 10.09 |
Weighted average exercise price, exercisable (in dollars per share) | $ 12.89 | |
Weighted average remaining contractual term, outstanding (in years) | 8 years 8 months 23 days | 8 years 9 months 7 days |
Weighted average remaining contractual term, options exercisable (in years) | 7 years 10 months 6 days | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Aggregate Intrinsic Value [Roll Forward] | ||
Aggregate intrinsic value, beginning balance | $ 681 | |
Aggregate intrinsic value, ending balance | 28 | $ 681 |
Aggregate intrinsic value, options exercisable | $ 18 |
Stock-Based Compensation - Assu
Stock-Based Compensation - Assumptions for Option Grants Issued (Details) | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | |
Share-Based Payment Arrangement [Abstract] | ||||
Risk-free interest rate | 3% | 1.01% | 1.95% | 1.04% |
Volatility | 138.57% | 124.63% | 131.54% | 121.29% |
Expected term (years) | 6 years 10 days | 6 years 3 months | 6 years 2 months 4 days | 6 years 2 months 4 days |
Expected dividend yield | 0% | 0% | 0% | 0% |
Stock-Based Compensation - Summ
Stock-Based Compensation - Summary of RSU Activity (Details) - $ / shares shares in Thousands | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | |
Weighted Average Grant Date Fair Value | ||||
Granted (in dollars per share) | $ 2.78 | $ 8.09 | $ 4.52 | $ 6.99 |
Restricted stock units ("RSUs") | ||||
Shares | ||||
Beginning balance (in shares) | 200 | |||
Granted (in shares) | 97 | |||
Ending balance (in shares) | 297 | 297 | ||
Weighted Average Grant Date Fair Value | ||||
Beginning balance (in dollars per share) | $ 2.81 | |||
Granted (in dollars per share) | 5.34 | |||
Ending balance (in dollars per share) | $ 3.64 | $ 3.64 |