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Stock Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2024
Share-Based Payment Arrangement [Abstract] |
Schedule of Stock Based Compensation Expenses | Stock-based compensation is recorded in the consolidated statements of operations as fol lows (in thousands):
|  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Cost of goods sold |  | $ | 65 |  |  | $ | 29 |  |  | $ | 123 |  |  | $ | 44 |
Research and development |  |  | 400 |  |  |  | 280 |  |  |  | 728 |  |  |  | 517 |
Sales and marketing |  |  | 75 |  |  |  | 115 |  |  |  | 155 |  |  |  | 276 |
General and administrative |  |  | 667 |  |  |  | 544 |  |  |  | 1,247 |  |  |  | 1,112 |
Total stock-based compensation expense |  | $ | 1,207 |  |  | $ | 968 |  |  | $ | 2,253 |  |  | $ | 1,949 |
Summary of Outstanding Stock Option Activity | The following table summarizes the outstanding stock option activity during the period indi cated (shares in thousands):
|  |  |  |  | Weighted average |  |  |
|  | Number of stock options |  |  | Exercise price |  |  | Remaining contractual term (in years) |  | Aggregate intrinsic value (in thousands) |
Balance at December 31, 2023 |  |  | 2,104 |  |  | $ | 10.20 |  |  |  | 6.2 |  | $ | 329 |
Granted |  |  | 408 |  |  | $ | 5.07 |  |  |  |  |  |
Exercised |  |  | (8 | ) |  | $ | 3.10 |  |  |  |  | $ | 18 |
Expired/Forfeited |  |  | (22 | ) |  | $ | 8.28 |  |  |  |  |  |
Balance at June 30, 2024 |  |  | 2,482 |  |  | $ | 9.40 |  |  |  | 6.4 |  | $ | 1,552 |
Vested and exercisable at June 30, 2024 |  |  | 1,639 |  |  | $ | 11.12 |  |  |  | 5.0 |  | $ | 657 |
Vested and expected to vest at June 30, 2024 |  |  | 2,482 |  |  | $ | 9.40 |  |  |  | 6.4 |  | $ | 1,552 |
Summary of Outstanding Restricted Stock Unit Activity | The following table summarizes the Company’s restricted stock unit (RSU) activity during the period indicated (shares in thousands):
|  | Restricted stock units |  |  | Weighted average grant date fair value |
Balance at December 31, 2023 |  |  | 706 |  |  | $ | 6.97 |
Grants |  |  | 484 |  |  | $ | 5.14 |
Vested and released |  |  | (196 | ) |  | $ | 7.83 |
Forfeited |  |  | (64 | ) |  | $ | 5.77 |
Balance at June 30, 2024 |  |  | 930 |  |  | $ | 5.92 |
Schedule of Performance Stock Unit | The following table summarizes the Company’s performance stock unit (PSU) activity during the period indicated (shares in thousands):
|  | Performance stock units |  |  | Weighted average grant date fair value |
Balance at December 31, 2023 |  |  | 110 |  |  | $ | 1.79 |
Grants |  |  | — |  |  | $ | — |
Vested and released |  |  | — |  |  | $ | — |
Forfeited |  |  | — |  |  | $ | — |
Balance at June 30, 2024 |  |  | 110 |  |  | $ | 1.79 |
Schedule of Company's share-settled obligation RSU grants | The following table summarizes the Company’s share-settled obligation RSU grants, which immediately vested during the period indicated:
RSU grants that settled obligations (in thousands) |  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Grant date fair value |  | $ | 70.9 |  |  | $ | — |  |  | $ | 195.4 |  |  | $ | 949.2 |
RSU shares granted and vested |  |  | 14 |  |  |  | — |  |  |  | 45 |  |  |  | 187 |

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