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v3.25.4

Income Taxes - Significant Components of Company's Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
US federal statutory rate |  | $ (9,628) | $ (9,540)
State and local taxes net of federal income tax effect | [1] | (408) | 1
Research and development credits |  | (591) | (642)
Change in valuation allowance |  | 8,615 | 8,816
Officers' compensation |  | 348 | 588
Stock based compensation |  | 432 | 488
Other |  | 5 | 5
Other adjustments |  | 400 | 284
Change in unrecognized tax benefits |  | 827 | 0
Total income tax (benefit) expense |  | $ 0 | $ 0
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |  |
US federal statutory rate |  | 21.00% | 21.00%
State and local taxes net of federal income tax effect | [1] | 0.90% | 0.00%
Research and development credits |  | 1.30% | 1.40%
Change in valuation allowance |  | (18.80%) | (19.40%)
Officers' compensation |  | (0.70%) | (1.30%)
Stock based compensation |  | (1.00%) | (1.10%)
Other |  | 0.00% | 0.00%
Other adjustments |  | (0.90%) | (0.60%)
Effective Income Tax Rate Reconciliation Change in Unrecognized Tax Benefits |  | (1.80%) | 0.00%
Effective income tax rate |  | 0.00% | 0.00%
[1] | Income tax rate associated with the state of California.

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