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Income Taxes (Tables) | 12 Months Ended
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Sep. 27, 2025
Income Tax Disclosure [Abstract] |
Schedule of Income Before Provision For (Benefit From) Income Taxes | The Company’s income (loss) before provision for income taxes for fiscal 2025, 2024 and 2023 were as follows:
| September 27, 2025 |  | September 28, 2024 |  | September 30, 2023
(In thousands) |  |  |  |  |
Domestic | $ | (70,672) |  |  | $ | (56,661) |  |  | $ | (9,904) |
Foreign | 20,175 |  |  | 29,510 |  |  | 14,298 |
Income (loss) before provision for income taxes | $ | (50,497) |  |  | $ | (27,151) |  |  | $ | 4,394 |
Schedule of Provision For (Benefit From) Income Taxes | Components of the provision for income taxes consisted of the following:
| September 27, 2025 |  | September 28, 2024 |  | September 30, 2023
(In thousands) |  |  |  |  |
Current: |  |  |  |  |
U.S. Federal | $ | 3,776 |  |  | $ | 8,094 |  |  | $ | 7,507 |
U.S. State | 2,363 |  |  | 4,023 |  |  | 4,947 |
Foreign | 4,500 |  |  | 17,798 |  |  | 2,810 |
Total current | 10,639 |  |  | 29,915 |  |  | 15,264 |
Deferred: |  |  |  |  |
U.S. Federal | — |  |  | — |  |  | — |
U.S. State | — |  |  | — |  |  | — |
Foreign | 8 |  |  | (18,920) |  |  | (596) |
Total deferred | 8 |  |  | (18,920) |  |  | (596) |
Provision for income taxes | $ | 10,647 |  |  | $ | 10,995 |  |  | $ | 14,668 |
Schedule of Deferred Tax Assets and Liabilities | Components of the Company’s deferred income tax assets and liabilities are as follows:
| September 27, 2025 |  | September 28, 2024
(In thousands) |  |  |
Deferred tax assets |  |  |
Capitalized research & development | $ | 131,858 |  |  | $ | 107,474 |
Research & development tax credit carryforwards | 51,752 |  |  | 58,156 |
Accrued expenses and reserves | 18,979 |  |  | 17,070 |
Deferred revenue | 14,363 |  |  | 15,374 |
Operating lease liability | 13,165 |  |  | 14,259 |
Other capitalized costs | 12,448 |  |  | 12,030 |
Stock-based compensation | 6,973 |  |  | 8,195 |
Foreign net operating loss carryforwards | 5,293 |  |  | 5,783 |
Depreciation | 4,098 |  |  | 2,991 |
U.S. net operating loss carryforwards | 3,889 |  |  | 2,296 |
Other | 370 |  |  | 592 |
Total deferred tax assets | 263,188 |  |  | 244,220 |
Valuation allowance | (238,268) |  |  | (216,365) |
Deferred tax assets, net of valuation allowance | 24,920 |  |  | 27,855 |
Deferred tax liabilities |  |  |
Right-of-use asset | (9,788) |  |  | (10,955) |
Intangibles | (2,675) |  |  | (3,392) |
Capitalized inventory | (2,074) |  |  | (3,254) |
Total deferred tax liabilities | (14,537) |  |  | (17,601) |
Net deferred tax assets | $ | 10,383 |  |  | $ | 10,254 |
Reported as |  |  |
Deferred tax assets | $ | 10,509 |  |  | $ | 10,314 |
Deferred tax liabilities | (126) |  |  | (60) |
Net deferred tax assets | $ | 10,383 |  |  | $ | 10,254 |
Schedule of Changes in Valuation Allowance | The following table summarizes changes in the valuation allowance for fiscal 2025, 2024 and 2023:
| September 27, 2025 |  | September 28, 2024 |  | September 30, 2023
(In thousands) |  |  |  |  |
Beginning balance | $ | 216,365 |  |  | $ | 185,840 |  |  | $ | 162,267 |
Increase during the period | 21,903 |  |  | 32,573 |  |  | 23,628 |
Decrease during the period | — |  |  | (2,048) |  |  | (55) |
Ending balance | $ | 238,268 |  |  | $ | 216,365 |  |  | $ | 185,840 |
Schedule of Effective Income Tax Rate Reconciliation | Reconciliation of U.S. statutory federal income taxes to the Company’s provision for income taxes is as follows:
| September 27, 2025 |  | September 28, 2024 |  | September 30, 2023
(In thousands) |  |  |  |  |
U.S. federal income taxes at statutory rate | $ | (10,604) |  |  | $ | (5,702) |  |  | $ | 923 |
U.S. state and local income taxes, net of federal benefit and state credits | (4,619) |  |  | (2,496) |  |  | (841) |
Foreign income tax rate differential | 991 |  |  | 1,544 |  |  | 734 |
Stock-based compensation | 5,068 |  |  | 2,726 |  |  | 104 |
Federal research and development tax credits | (5,081) |  |  | (8,240) |  |  | (7,591) |
Unrecognized federal tax benefits | 457 |  |  | 1,082 |  |  | 184 |
Change in tax rate | (190) |  |  | (188) |  |  | — |
Global intangible low taxed income, net of foreign tax credits | 715 |  |  | 944 |  |  | 1,234 |
Foreign -derived intangible income (FDII) deduction | (1,000) |  |  | (1,519) |  |  | (6,863) |
Subpart F income | 697 |  |  | 733 |  |  | 1,374 |
162(m) executive compensation limitation | 1,923 |  |  | 1,496 |  |  | 2,513 |
Deferred adjustments | — |  |  | 504 |  |  | — |
Intercompany IP sale | — |  |  | (10,412) |  |  | — |
Other | 387 |  |  | (121) |  |  | (695) |
Change in valuation allowance | 21,903 |  |  | 30,644 |  |  | 23,592 |
Provision for income taxes | $ | 10,647 |  |  | $ | 10,995 |  |  | $ | 14,668 |
Schedule of Changes in Unrecognized Tax Benefits | Change in gross unrecognized tax benefits, excluding interest and penalties, as a result of uncertain tax positions are as follows:
| September 27, 2025 |  | September 28, 2024 |  | September 30, 2023
(In thousands) |  |  |  |  |
Beginning balance | $ | 18,910 |  |  | $ | 17,619 |  |  | $ | 17,021 |
Increase (decrease) - tax positions in prior periods | (207) |  |  | 147 |  |  | (566) |
Increase - tax positions in current periods | 904 |  |  | 1,144 |  |  | 1,164 |
Ending balance | $ | 19,607 |  |  | $ | 18,910 |  |  | $ | 17,619 |

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