| Schedule of financial assets and liabilities measured at fair value on a recurring basis |
Financial assets measured at fair value on a recurring basis on the condensed consolidated balance sheets at September 30, 2024 and December 31, 2023 and financial liabilities measured at fair value on a recurring basis on the condensed consolidated balance sheets at September 30, 2024 were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fair Value Measurement Using: | | Balance Sheet Classification | | Type of Instrument | | Level 1 | | Level 2 | | Level 3 | | Total | | September 30, 2024 | | | | | | | | | | | | Assets: | | | | | | | | | | | | Cash and cash equivalents | | Money market funds | | $ | 65,497 | | | $ | — | | | $ | — | | | $ | 65,497 | | | | | | | | | | | | | | | | | | | | | | | | | Marketable securities | | U.S. treasury bills | | 15,828 | | | 278,598 | | | — | | | 294,426 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Other non-current assets | | Money market funds | | 2,548 | | | — | | | — | | | 2,548 | | | Total assets | | | | $ | 83,873 | | | $ | 278,598 | | | $ | — | | | $ | 362,471 | | | | | | | | | | | | | | Liabilities: | | | | | | | | | | | Forward contract liability | | Forward contract, current | | $ | — | | | $ | — | | | $ | 69,030 | | | $ | 69,030 | | | | | | | | | | | | | Derivative liability, non-current | | Written put option, non-current | | — | | | — | | | 12,320 | | | 12,320 | | | | | | | | | | | | | | Total liabilities | | | | $ | — | | | $ | — | | | $ | 81,350 | | | $ | 81,350 | | | | | | | | | | | | | | December 31, 2023 | | | | | | | | | | | | Assets: | | | | | | | | | | | | Cash and cash equivalents | | Money market funds | | $ | 59,199 | | | $ | — | | | $ | — | | | $ | 59,199 | | | Cash and cash equivalents | | U.S. treasury bills | | — | | | 27,901 | | | — | | | 27,901 | | | Cash and cash equivalents | | U.S. corporate bonds | | — | | | 6,001 | | | — | | | 6,001 | | | Marketable securities | | U.S. treasury bills | | 9,874 | | | 76,160 | | | — | | | 86,034 | | | Marketable securities | | U.S. corporate bonds | | — | | | 40,210 | | | — | | | 40,210 | | | Marketable securities | | Foreign corporate bonds | | — | | | 7,173 | | | — | | | 7,173 | | | Other non-current assets | | Money market funds | | 1,900 | | | — | | | — | | | 1,900 | | | Total assets | | | | $ | 70,973 | | | $ | 157,445 | | | $ | — | | | $ | 228,418 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
|
| Schedule of aggregate fair value of liability determined by Level 3 inputs |
The following table provides a roll forward of the fair value of the Company's forward contract and derivative liabilities related to the Knopp Amendment for which fair value is determined by Level 3 inputs from inception on May 1, 2024 to September 30, 2024: | | | | | | | | | | | | | Carrying Value | | | Fair value at May 1, 2024 | | $ | 93,290 | | | | Change in fair value of forward contract and derivative liabilities in other income, net | | (11,940) | | | | Fair value at September 30, 2024 | | $ | 81,350 | | | |
|
| Schedule of fair value measurement inputs and valuation techniques |
A summary of the unobservable inputs (Level 3 inputs) used in measuring the Company’s forward contract and derivative liability related to the Knopp Amendment as of September 30, 2024 and May 1, 2024 are as follows, presented on a weighted-average basis based on relative fair value: | | | | | | | | | | | | | | | | | As of September 30, 2024 | | As of May 1, 2024 | | | | | | Time to payment and potential payment (years) | | 0.74 | | 1.08 | Volatility (annual) | | 65.0 | % | | 80.0 | % | Discount rate | | 12.7 | % | | 14.8 | % |
|