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Income Taxes | 3 Months Ended
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Mar. 31, 2026
Income Tax Disclosure [Abstract] |
Income Taxes | Income taxes The income tax provision or benefit for interim periods is determined using an estimate of our annual effective tax rate, adjusted for discrete items, if any, that are taken into consideration in the relevant period. Each quarter, we update the estimate of the annual effective tax rate, and if the estimated tax rate changes, we record a cumulative adjustment to the provision or benefit. We did not record a provision for income taxes for the three months ended March 31, 2026 and 2025 because of forecasted full year net operating losses ("NOLs"), which consider the timing of recognition of deferred revenue for tax purposes and the effects of the option to capitalize and amortize U.S. R&D expenses as allowed by the One Big Beautiful Bill Act of 2025 ("OBBBA"), which was enacted on July 4, 2025. The effective tax rate differs from the U.S. statutory tax rate primarily due to the valuation allowances on our deferred tax assets and state income taxes. As of March 31, 2026 and December 31, 2025, we have provided a valuation allowance against U.S. federal and state deferred tax assets. We continue to evaluate the realizability of deferred tax assets and the related valuation allowance. If our assessment of the deferred tax assets or the corresponding valuation allowance were to change, we would record the related adjustment to income during the period in which we make the determination. We recognize interest and penalties associated with uncertain tax benefits as part of the income tax provision. To date, we have not recognized any interest and penalties, nor have we accrued for or made payments for interest and penalties. We have not been audited by the Internal Revenue Service, any state, or foreign tax authority. We are subject to taxation in the U.S. and in Australia. Due to NOLs and research credit carryforwards, all of our tax years, from 2015 to 2025, remain open to U.S. federal and California state tax examinations. In addition, our fiscal years from 2021 to 2025 are open to examination in Australia.

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