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Income Taxes - Schedule of Reconciliation of Income Tax Benefit at Statutory Federal Income Tax Rate (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Reconciliation of Income Tax Benefit at Statutory Federal Income Taxes |  |
US federal statutory tax rate | $ (16,927) | $ (14,940)
State and local income taxes, net of federal income tax effect | (118) | (326)
Tax Credits |  |
R&D Credits | (2,408) | (2,322)
Change in valuation allowance | 18,364 | 16,080
Nontaxable or nondeductible items |  |
Other | 487 | 599
Change in unrecognized tax benefit | 572 | 906
Other | 26 | 0
Provision for income tax benefit | $ 0 | $ 0
Reconciliation of Income Tax Benefit at Statutory Federal Income Tax Rate |  |
US federal statutory rate, percentage | 21.00% | 21.00%
State amd local income taxes, net of federal income tax effect, percentage | 0.10% | 0.50%
Tax Credits |  |
R&D Credits, percentage | 3.00% | 3.30%
Change in valuation allowance, percentage | (22.80%) | (22.60%)
Nontaxable or nondeductible items |  |
Other, percentage | (0.60%) | (0.80%)
Change in unrecognized tax benefit, percentage | (0.70%) | (1.30%)
Other, percentage | (0.00%) | 0.00%
Provision for income tax benefit, percentage | 0.00% | 0.00%
Australia |  |
Reconciliation of Income Tax Benefit at Statutory Federal Income Taxes |  |
Statutory tax rate difference between Australia and United States | $ (2) | $ (1)
Tax Credits |  |
Change in valuation allowance | 89 | 4
Nontaxable or nondeductible items |  |
Other | $ (83) | $ 0
Reconciliation of Income Tax Benefit at Statutory Federal Income Tax Rate |  |
Statutory tax rate difference between Australia and United States, percentage | 0.00% | 0.00%
Tax Credits |  |
Change in valuation allowance, percentage | (0.10%) | 0.00%
Nontaxable or nondeductible items |  |
Other, percentage | 0.10% | 0.00%

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