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Fair Value Measurements and Marketable Securities Available-for-Sale | 3 Months Ended
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Mar. 31, 2026
Fair Value Disclosures [Abstract] |
Fair Value Measurements and Marketable Securities Available for Sale | 3. Fair Value Measurements and Marketable Securities Available-for-Sale The Company provides disclosure of financial assets and financial liabilities that are carried at fair value based on the price that would be received upon sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements may be classified based on the amount of subjectivity associated with the inputs to fair valuation of these assets and liabilities using the following three levels: Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. Level 2 — Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.) and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). Level 3 — Unobservable inputs that reflect the Company’s estimates of the assumptions that market participants would use in pricing the asset or liability. The Company develops these inputs based on the best information available, including its own data. The following table presents information about the Company’s marketable securities and the Warrant liability as of March 31, 2026 and December 31, 2025, measured at fair value on a recurring basis, and indicates the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value. The Company’s Warrant liabilities are included within the Level 1 and Level 3 fair value hierarchy. The fair value of the Consideration, Public and Forward Purchase Warrants is determined using the closing price of the warrants on the NYSE market. The fair value of the Private Placement Warrants is determined using the Black-Scholes option pricing formula. The primary unobservable input utilized in determining the fair value of the Private Warrants is the expected volatility. The expected volatility was estimated considering observable Public Warrant pricing, the Company's own historical volatility and the volatility of guideline public companies. There have not been any transfers between the levels during the periods. The Warrants expired on February 10, 2026.
|  | March 31, 2026 |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
|  | (In thousands) |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 87,634 |  |  | $ | 87,634 |  |  | $ | — |  |  | $ | — |
|  |  | 87,634 |  |  |  | 87,634 |  |  |  | — |  |  |  | — |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |
Certificate of deposits |  |  | 2,893 |  |  |  | — |  |  |  | 2,893 |  |  |  | — |
Commercial paper |  |  | 9,227 |  |  |  | — |  |  |  | 9,227 |  |  |  | — |
U.S. government and government agency securities |  |  | 284,910 |  |  |  | — |  |  |  | 284,910 |  |  |  | — |
Corporate bonds |  |  | 111,308 |  |  |  | — |  |  |  | 111,308 |  |  |  | — |
|  |  | 408,338 |  |  |  | — |  |  |  | 408,338 |  |  |  | — |
Total financial assets: |  | $ | 495,972 |  |  | $ | 87,634 |  |  | $ | 408,338 |  |  | $ | — |
|  | December 31, 2025 |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
|  | (In thousands) |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 52,339 |  |  | $ | 52,339 |  |  | $ | — |  |  | $ | — |
U.S. government and government agency securities |  |  | 43,990 |  |  |  | — |  |  |  | 43,990 |  |  |  | — |
|  |  | 96,329 |  |  |  | 52,339 |  |  |  | 43,990 |  |  |  | — |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |
Certificate of deposits |  |  | 3,918 |  |  |  | — |  |  |  | 3,918 |  |  |  | — |
Commercial paper |  |  | 5,158 |  |  |  | — |  |  |  | 5,158 |  |  |  | — |
U.S. government and government agency securities |  |  | 226,777 |  |  |  | — |  |  |  | 226,777 |  |  |  | — |
Corporate bonds |  |  | 129,272 |  |  |  | — |  |  |  | 129,272 |  |  |  | — |
|  |  | 365,125 |  |  |  | — |  |  |  | 365,125 |  |  |  | — |
Total financial assets: |  | $ | 461,454 |  |  | $ | 52,339 |  |  | $ | 409,115 |  |  | $ | — |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Warrants |  | $ | 2,865 |  |  | $ | 2,865 |  |  | $ | — |  |  | $ | — |
Marketable securities consist primarily of U.S. government and government agency, certificate of deposits, commercial paper, corporate bond and municipal securities (“Debt Securities”). Based on the Company’s intentions regarding its marketable securities, all Debt Securities are classified as available-for-sale and are carried at fair value based on the price that would be received upon sale of the security. The following table provides the amortized cost, aggregate fair value, and unrealized gains (losses) of marketable securities as of March 31, 2026 and December 31, 2025:
|  | March 31, 2026 |
|  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
|  | (In thousands) |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 87,634 |  |  | $ | — |  |  | $ | — |  |  | $ | 87,634 |
|  |  | 87,634 |  |  |  | — |  |  |  | — |  |  |  | 87,634 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |
Certificate of deposits |  |  | 2,888 |  |  |  | 5 |  |  |  | — |  |  |  | 2,893 |
Commercial paper |  |  | 9,231 |  |  |  | 4 |  |  |  | (8 | ) |  |  | 9,227 |
U.S. government and government agency securities |  |  | 285,242 |  |  |  | 137 |  |  |  | (469 | ) |  |  | 284,910 |
Corporate bonds |  |  | 111,422 |  |  |  | 48 |  |  |  | (162 | ) |  |  | 111,308 |
|  |  | 408,783 |  |  |  | 194 |  |  |  | (639 | ) |  |  | 408,338 |
|  | $ | 496,417 |  |  | $ | 194 |  |  | $ | (639 | ) |  | $ | 495,972 |
|  | December 31, 2025 |
|  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
|  | (In thousands) |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 52,339 |  |  | $ | — |  |  | $ | — |  |  | $ | 52,339 |
U.S. government and government agency securities |  |  | 43,985 |  |  |  | 5 |  |  |  | — |  |  |  | 43,990 |
|  |  | 96,324 |  |  |  | 5 |  |  |  | — |  |  |  | 96,329 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |
Certificate of deposits |  |  | 3,909 |  |  |  | 9 |  |  |  | — |  |  |  | 3,918 |
Commercial paper |  |  | 5,154 |  |  |  | 4 |  |  |  | — |  |  |  | 5,158 |
U.S. government and government agency securities |  |  | 226,247 |  |  |  | 530 |  |  |  | — |  |  |  | 226,777 |
Corporate bonds |  |  | 129,044 |  |  |  | 249 |  |  |  | (21 | ) |  |  | 129,272 |
|  |  | 364,354 |  |  |  | 792 |  |  |  | (21 | ) |  |  | 365,125 |
|  | $ | 460,678 |  |  | $ | 797 |  |  | $ | (21 | ) |  | $ | 461,454 |
For the three months ended March 31, 2026 and 2025, there were no unrealized gains or losses on equity securities. The activity related to the net gains (losses) on marketable securities included in other income (expense) on the consolidated statements of operations and comprehensive loss were as follows (in thousands):
|  | Three months ended March 31, |
|  | 2026 |  |  | 2025 |
Net realized gains (losses) on available-for-sale securities were as follows: |  |  |  |  |  |
Realized gains from sales of available-for-sale securities |  | $ | 8 |  |  | $ | 3 |
Realized losses from sales of available-for-sale securities |  |  | — |  |  |  | — |
Total losses on marketable securities |  | $ | 8 |  |  | $ | 3 |
The following tables provide marketable securities with continuous unrealized losses for less than 12 months and 12 months or greater and the related fair values as of March 31, 2026 and December 31, 2025 were as follows:
|  | March 31, 2026 |
|  | Less than 12 Months |  |  | 12 Months or Greater |  |  | Total |  |  | Total |
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
|  | (In thousands) |
Commercial paper |  | $ | 4,681 |  |  | $ | (8 | ) |  | $ | — |  |  | $ | — |  |  | $ | 4,681 |  |  | $ | (8 | )
U.S. government and government agency securities |  |  | 136,930 |  |  |  | (469 | ) |  |  | — |  |  |  | — |  |  |  | 136,930 |  |  |  | (469 | )
Corporate bonds |  |  | 76,414 |  |  |  | (162 | ) |  |  | — |  |  |  | — |  |  |  | 76,414 |  |  |  | (162 | )
|  | $ | 218,025 |  |  | $ | (639 | ) |  | $ | — |  |  | $ | — |  |  | $ | 218,025 |  |  | $ | (639 | )
|  | December 31, 2025 |
|  | Less than 12 Months |  |  | 12 Months or Greater |  |  | Total |  |  | Total |
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
|  | (In thousands) |
Corporate bonds |  | $ | 18,157 |  |  | $ | (21 | ) |  | $ | — |  |  | $ | — |  |  | $ | 18,157 |  |  | $ | (21 | )
|  | $ | 18,157 |  |  | $ | (21 | ) |  | $ | — |  |  | $ | — |  |  | $ | 18,157 |  |  | $ | (21 | )
Unrealized losses from the marketable securities are primarily attributable to changes in interest rates and represent temporary impairments due to general market factors. The Company has not recognized an allowance for expected credit losses related to available-for-sale investments as the Company has not identified any unrealized losses for these investments attributable to credit factors during the three months ended March 31, 2026. As of March 31, 2026, the Company does not intend to sell these securities nor does the Company believe that it will be required to sell these securities before the recovery of their amortized cost basis. Maturity information based on fair value is as follows as of March 31, 2026:
|  | Within one year |  |  | After one year through five years |  |  | Total |
|  | (In thousands) |
Certificate of deposits |  | $ | 2,893 |  |  | $ | — |  |  | $ | 2,893 |
Commercial paper |  |  | 9,227 |  |  |  | — |  |  |  | 9,227 |
U.S. government and government agency securities |  |  | 192,304 |  |  |  | 92,606 |  |  |  | 284,910 |
Corporate bonds |  |  | 42,914 |  |  |  | 68,394 |  |  |  | 111,308 |
|  | $ | 247,338 |  |  | $ | 161,000 |  |  | $ | 408,338 |
Debt and Liability Related to Revenue Interest Financing Agreement As of March 31, 2026, the estimated fair value of our debt approximated the carrying amount. The fair value of the debt was estimated for disclosure purposes only and was determined based on other inputs that are observable, and thus categorized as Level 2 in the fair value hierarchy. The fair value of the liability related to the sale of future royalties is based on our current estimates of future royalties expected to be paid to Sagard over the life of the arrangement. The Company periodically reassesses the amount and timing of estimated royalty payments based on internal sales projections and external information from market data sources, which are considered Level 3 inputs. As of March 31, 2026, the estimated fair value of the liability approximated the carrying amount.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 107 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-107 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 940 -SubTopic 820 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478119/940-820-50-1 + Details
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