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Stock-based Compensation | 3 Months Ended
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Mar. 31, 2026
Share-Based Payment Arrangement [Abstract] |
Stock-based Compensation | 8. Stock-based Compensation The Company has various stock-based compensation plans, which are more fully described in the Annual Report. Under these plans, the Company has the ability to grant several forms of incentive awards to the Company's eligible employees, directors, and non-employee consultants. Stock-based compensation expense is reported in the Company's condensed consolidated statements of operations as follows (in thousands):
|  | Three Months Ended March 31, |
|  | 2026 |  |  | 2025 |
Cost of product revenue |  | $ | 424 |  |  | $ | 111 |
Cost of services and other revenue |  |  | 117 |  |  |  | 131 |
Research and development expense |  |  | 162 |  |  |  | 339 |
Selling, general and administrative expense |  |  | 4,298 |  |  |  | 7,468 |
Total stock-based compensation expense |  | $ | 5,001 |  |  | $ | 8,049 |
Stock-based compensation will fluctuate based on the grant-date fair value of awards, the number of awards, the requisite service period of the awards, employee forfeitures and the timing of the awards. Expense related to each stock option and restricted stock unit (“RSU”) award is recognized on a straight-line basis over the requisite service period of the entire award. The following table summarizes our award activity for stock options and RSUs for the three months ended March 31, 2026 (in thousands):
|  | Stock Options |  |  | RSUs |
Balance at December 31, 2025 |  |  | 32,547 |  |  |  | 19,478 |
Granted |  |  | 4,968 |  |  |  | 5,564 |
Exercised or issued |  |  | (67 | ) |  |  | (3,752 | )
Forfeited |  |  | (1,040 | ) |  |  | (1,052 | )
Balance at March 31, 2026 |  |  | 36,408 |  |  |  | 20,238 |

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