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Stock-Based Compensation | 6 Months Ended
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Jun. 30, 2026
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation | 14. Stock-Based Compensation In January 2026, the number of shares of common stock available for issuance under the Company’s 2015 Omnibus Incentive Plan, or the 2015 Plan, was increased by 3,496,239 shares of common stock due to the automatic annual provision to increase shares of common stock available under the 2015 Plan. In March 2026, the 2015 Plan expired. In June 2026, the 2026 Equity Incentive Plan, or 2026 Plan, was approved. The maximum number of shares of the Company’s common stock that may be issued under the 2026 Plan is 17,134,916 shares, which is the sum of (i) 7,200,000 newly authorized shares, plus (ii) up to 9,934,916 shares of common stock subject to outstanding stock awards granted under the 2015 Plan that, on or after the 2026 Plan becomes effective, expire or otherwise terminate prior to exercise or settlement. As of June 30, 2026, there were 424,326 shares of common stock available for issuance under the 2023 Plan and 7,448,808 shares of common stock available for issuance under the 2026 Plan. The Company recognized stock-based compensation expense related to the issuance of stock option awards and restricted stock units to employees and non-employees and related to the Company’s 2015 Employee Stock Purchase Plan, or ESPP, in the consolidated statements of comprehensive loss as follows:
| Three Months Ended June 30, |  |  | Six Months Ended June 30, |
| 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Research and development | $ | 4,510 |  |  | $ | 4,196 |  |  | $ | 8,537 |  |  | $ | 7,864 |
Selling, general and administrative |  | 9,504 |  |  |  | 9,591 |  |  |  | 17,530 |  |  |  | 16,303 |
Total | $ | 14,014 |  |  | $ | 13,787 |  |  | $ | 26,067 |  |  | $ | 24,167 |
Compensation expense by type of award in the three and six months ended June 30, 2026 and 2025 was as follows:
| Three Months Ended June 30, |  |  | Six Months Ended June 30, |
| 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Stock options | $ | 8,178 |  |  | $ | 8,707 |  |  | $ | 15,739 |  |  | $ | 16,392 |
RSUs |  | 5,624 |  |  |  | 4,757 |  |  |  | 9,905 |  |  |  | 7,332 |
ESPP |  | 212 |  |  |  | 323 |  |  |  | 423 |  |  |  | 443 |
Total | $ | 14,014 |  |  | $ | 13,787 |  |  | $ | 26,067 |  |  | $ | 24,167 |
In addition, stock-based compensation exp ense of $0.1 million and $0.2 million was ca pitalized to inventory for the three and six months ended June 30, 2026, respectively, which represents the stock-based compensation expense incurred related to employees involved in the manufacturing process of finished goods and samples. For the three and six months ended June 30, 2025, $0.1 million and $0.2 million of stock compensation expense was capitalized to inventory. As of June 30, 2026, there were $103.4 million of unrecognized compensation costs related to employee and non-employee unvested stock options and RSUs granted under the Inducement Plan, 2015 Plan, 2026 Plan, and the Company’s 2007 Stock Plan, which are expected to be recognized over a weighted-average remaining service period of 2.67 years. Employee Benefit Plan The Company maintains a defined contribution 401(k) retirement plan. For the three and six months ended June 30, 2026, the Company made $0.3 million and $2.8 million, respectively, of contributions to t he plan. For the three and six months ended June 30, 2025, the Company made $0.3 million and $2.6 million, respectively, of contributions to the plan. The Company’s contributions were made in cash

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