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Share-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of Share-based Compensation Expense | The Company recognized share-based compensation in its Condensed Statements of Operations and Comprehensive Loss during the three and six month periods ended June 30, 2025 and 2024 as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Manufacture and supply | $ | 128 |  |  | $ | 99 |  |  | $ | 228 |  |  | $ | 169 |
Research and development | 408 |  |  | 308 |  |  | 738 |  |  | 478 |
Selling, general and administrative | 1,348 |  |  | 1,132 |  |  | 2,505 |  |  | 2,472 |
Total share-based compensation expenses | $ | 1,884 |  |  | $ | 1,539 |  |  | $ | 3,471 |  |  | $ | 3,119 |
Share-based compensation from: |  |  |  |  |  |  |
Restricted stock units | $ | 1,407 |  |  | $ | 1,000 |  |  | $ | 2,509 |  |  | $ | 1,933 |
Stock options | 468 |  |  | 523 |  |  | 953 |  |  | 1,170 |
Employee stock purchase plan (ESPP) | 9 |  |  | 16 |  |  | 9 |  |  | 16 |
Total share-based compensation expenses | $ | 1,884 |  |  | $ | 1,539 |  |  | $ | 3,471 |  |  | $ | 3,119 |
Schedule of Restricted Stock Units Awards | The following tables summarize the Company’s awards of service-based and market conditions vesting-based restricted stock units for the six month period ended June 30, 2025:
Restricted Stock Unit Awards (RSUs) - Service-based: | Number of Units |  | Weighted Average Grant Date Fair Value
| (in thousands) |  |
Unvested as of December 31, 2024 | 2,610 |  |  | $ | 3.38 |
Granted | 1,454 |  |  | $ | 2.65 |
Vested | (729) |  |  | $ | 3.04 |
Forfeited | (45) |  |  | $ | 3.85 |
Unvested as of June 30, 2025 | 3,290 |  |  | $ | 3.13 |
Expected to vest as of June 30, 2025 | 3,055 |  |  | $ | 3.11 |
Schedule of Performance Share Activity |
Restricted Stock Unit Awards (RSUs) - Market conditions vesting-based: | Number of Units |  | Weighted Average Grant Date Fair Value
| (in thousands) |  |
Unvested as of December 31, 2024 | 1,082 |  |  | $ | 2.40 |
Granted | 784 |  |  | 2.82 |
Vested | — |  |  | — |
Forfeited | — |  |  | — |
Unvested as of June 30, 2025 | 1,866 |  |  | $ | 2.57 |
Expected to vest as of June 30, 2025 | 1,719 |  |  | $ | 2.56 |
Schedule of Valuation Assumptions | The Company’s estimates of the fair value of the 2025 market conditions vesting-based awards at their grant or valuation dates were based on a Monte Carlo simulation and considered various variables and the following assumptions:
| Six Months Ended, June 30, 2025
Expected dividend yield | 0%
Expected volatility | 91.5%
Risk-free interest rate | 3.9%
Stock price at grant date | $2.65
Schedule of Stock Option Activity |
Stock Option Awards: | Number of Options |  | Weighted Average Exercise Price
| (in thousands) |  |
Outstanding as of December 31, 2024 | 6,301 |  |  | $ | 5.68 |
Granted | 990 |  |  | 2.84 |
Exercised | (8) |  |  | 0.88 |
Forfeited/Expired | (96) |  |  | 5.32 |
Outstanding as of June 30, 2025 | 7,187 |  |  | $ | 5.30 |
Expected to vest as of June 30, 2025 | 7,067 |  |  | $ | 5.33 |
Exercisable as of June 30, 2025 | 5,407 |  |  | $ | 5.92 |
The fair values of stock options granted were estimated using the Black-Scholes pricing model based on the following assumptions:
| Six Months Ended June 30, 2025 |  |
Expected dividend yield | —% | — | —% |  |
Expected volatility | 97% | — | 100% |  |
Expected term (years) | 5.5 | — | 6.1 |  |
Risk-free interest rate | 4.1% | — | 4.2% |  |

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