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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2025
Income Tax Disclosure [Abstract] |
Schedule of Components of Income (Loss) Before Income Taxes | The components of income (loss) before income taxes were as follows (in thousands):
| Year ended December 31, |
| 2025 |  |  | 2024 |  |  | 2023 |
United States | $ | (463,858 | ) |  | $ | (529,258 | ) |  | $ | (230,487 | )
Foreign |  | 6,745 |  |  |  | 4,256 |  |  |  | 9,491 |
Total | $ | (457,113 | ) |  | $ | (525,002 | ) |  | $ | (220,996 | )
Schedule of Income Tax Expense (Benefit) | The income tax expense was as follows (in thousands):
| Year ended December 31, |
| 2025 |  |  | 2024 |  |  | 2023 |
Current: |  |  |  |  |  |  |  |
Federal | $ | - |  |  | $ | - |  |  | $ | - |
State |  | - |  |  |  | - |  |  |  | - |
Foreign |  | 6,453 |  |  |  | 1,997 |  |  |  | 2,576 |
Total current |  | 6,453 |  |  |  | 1,997 |  |  |  | 2,576 |
Deferred: |  |  |  |  |  |  |  |
Federal |  | - |  |  |  | - |  |  |  | - |
State |  | - |  |  |  | - |  |  |  | - |
Foreign |  | (2,555 | ) |  |  | (669 | ) |  |  | (895 | )
Total deferred |  | (2,555 | ) |  |  | (669 | ) |  |  | (895 | )
Total income tax provision | $ | 3,898 |  |  | $ | 1,328 |  |  | $ | 1,681 |
Schedule of Income Taxes Paid | Income taxes paid for the year ended December 31, 2025 are as follows (in thousands):
| 2025 |
Federal | $ | - |
State |  | - |
Foreign |  |
Saudi Arabia |  | 4,000 |
Foreign other |  | 2,798 |
Total cash paid for income taxes (net of refunds) | $ | 6,798 |
Summary of the Differences Between the Effective Income Tax Rate and the Statutory U.S. Federal Income Tax Rate | The differences between the effective income tax rate and the statutory U.S. federal income tax rate for the year ended December 31, 2025 are as follows (dollars in thousands):
| Year ended December 31, 2025 |
| Amount |  |  | Percent |
U.S. federal statutory tax rate |  | (95,994 | ) |  |  | 21 | %
State and local income tax, net of federal (national) income tax effect(1) |  | (11 | ) |  |  | 0 | %
Foreign tax effects |  | 2,481 |  |  |  | (1 | %)
Effect of cross-border tax laws |  | 1,296 |  |  |  | 0 | %
Tax credits |  |  |  |  |
Research and development tax credit |  | (11,162 | ) |  |  | 2 | %
Changes in valuation allowances |  | 66,265 |  |  |  | (14 | %)
Nontaxable or non-deductible items |  |  |  |  |
Changes in fair value of warrant liability |  | 14,312 |  |  |  | (3 | %)
Non-controlling interest |  | 21,154 |  |  |  | (5 | %)
Non-deductible compensation |  | 5,557 |  |  |  | (1 | %)
Effective tax rate |  | 3,898 |  |  |  | (1 | %)
(1) State taxes in California and Massachusetts make up the majority (greater than 50 percent) of the tax effect in this category. The differences between the effective income tax rate and the statutory U.S. federal income tax rate for years ended December 31, 2024 and 2023 are as follows:
| Year ended December 31, |
| 2024 |  |  | 2023 |
Statutory U.S. federal income tax rate |  | 21 | % |  |  | 21 | %
Income (loss) attributable to noncontrolling interest and non taxable income (loss) |  | (4 | %) |  |  | (13 | %)
Changes in fair value of warrant liabilities |  | (11 | %) |  |  | 1 | %
Change in valuation allowance |  | (7 | %) |  |  | (10 | %)
Research and development credit |  | 1 | % |  |  | 1 | %
Other |  | 0 | % |  |  | (1 | %)
Effective income tax rate |  | 0 | % |  |  | (1 | %)
Schedule Of Deferred Tax Assets and Liabilities | Significant components of deferred tax assets and liabilities are as follows (in thousands):
| As of December 31, |
| 2025 |  |  | 2024 |
Deferred tax assets: |  |  |  |  |
Net operating loss carryforwards | $ | 125,765 |  |  | $ | 56,006 |
Basis difference in the equity of AST LLC |  | 457,008 |  |  |  | 140,668 |
Research and development credit |  | 25,243 |  |  |  | 13,223 |
Other |  | 14,578 |  |  |  | 3,829 |
Total gross deferred tax assets |  | 622,594 |  |  |  | 213,726 |
Less valuation allowance: |  | (618,440 | ) |  |  | (212,127 | )
Net deferred tax assets |  | 4,154 |  |  |  | 1,599 |
Deferred tax liabilities: |  |  |  |  |
Intangibles |  | (14,902 | ) |  |  | - |
Total gross deferred tax liabilities |  | (14,902 | ) |  |  | - |
Net deferred tax (liabilities) assets | $ | (10,748 | ) |  | $ | 1,599 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-9 + Details
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