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Stock Option Plan (Tables) | 9 Months Ended
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Sep. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of Restricted Stock Unit Activity | RSU activity under the Company's 2019 Plan is set forth below:
|  | Number of Shares |  | Weighted- Average Grant Date Fair Value
Outstanding, December 31, 2024 |  | 1,710,373 |  |  | $ | 2.48 |
Awards granted |  | 692,932 |  |  | $ | 4.76 |
Awards released |  | (391,515) |  |  | $ | 2.90 |
Awards canceled |  | (246,878) |  |  | $ | 2.72 |
Outstanding, September 30, 2025 |  | 1,764,912 |  |  | $ | 3.25 |
Schedule of Stock Option Activity | Stock option activity under the 2019 Plan is set forth below:
|  | Number of Options |  | Weighted- Average Exercise Price |  | Weighted- Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value (in thousands)
Outstanding, December 31, 2024 |  | 489,296 |  |  | $ | 8.39 |  |  | 6.53 |  | $ | 370 |
Granted |  | 169,570 |  |  | $ | 4.68 |  |  |  |  |
Exercised |  | (108) |  |  | $ | 0.37 |  |  |  |  |
Expired |  | (131,869) |  |  | $ | 9.73 |  |  |  |  |
Outstanding, September 30, 2025 |  | 526,889 |  |  | $ | 6.86 |  |  | 6.93 |  | $ | 2,583 |
Vested and expected to vest, September 30, 2025 |  | 526,889 |  |  | $ | 6.86 |  |  | 6.93 |  | $ | 2,583 |
Options exercisable, September 30, 2025 |  | 344,472 |  |  | $ | 8.11 |  |  | 5.62 |  | $ | 1,401 |
Schedule of Non-Cash Stock-Based Compensation Expense | Total non-cash stock-based compensation expense recorded related to options granted, RSUs granted and stock purchase rights granted under the ESPP in the condensed statements of operations is as follows (in thousands):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2025 |  | 2024 |  | 2025 |  | 2024
Cost of revenue |  | $ | 58 |  |  | $ | 47 |  |  | $ | 173 |  |  | $ | 103 |
Selling, general and administrative |  | 425 |  |  | 114 |  |  | 1,095 |  |  | 1,058 |
Research and development |  | 110 |  |  | 56 |  |  | 185 |  |  | 169 |
Total |  | $ | 593 |  |  | $ | 217 |  |  | $ | 1,453 |  |  | $ | 1,330 |

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