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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
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Oct. 03, 2025 | Sep. 27, 2024
Statement of Cash Flows [Abstract] |  |
Net income | $ 538,042 | $ 381,406
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 22,109 | 21,161
Impairment of long-lived assets | 0 | 64,238
Stock-based compensation | 92,886 | 67,490
Non-cash lease expense | 18,210 | 21,111
Acquired in-process research and development technology | 6,999 | 31,250
Other, net | (9,261) | (9,247)
Changes in operating assets and liabilities: |  |
Trade receivables, net | (44,207) | (32,192)
Inventory | (1,581) | 2,691
Prepaid expenses and other assets | (36,737) | (63,068)
Accrued collaboration liabilities | 1,544 | (1,003)
Accounts payable and other liabilities | (37,252) | (24,129)
Net cash provided by operating activities | 550,752 | 459,708
Cash flows from investing activities: |  |
Purchases of marketable securities | (477,556) | (622,522)
Proceeds from maturities and sales of marketable securities | 833,527 | 651,148
Purchases of property, equipment and other, net | (7,272) | (24,458)
Acquired in-process research and development technology | (25,499) | (27,750)
Net cash provided by (used in) investing activities | 323,200 | (23,582)
Cash flows from financing activities: |  |
Payments for repurchases of common stock | (689,893) | (461,621)
Proceeds from issuance of common stock under the equity incentive plan and stock purchase plan | 41,262 | 43,027
Taxes paid related to net share settlement of equity awards | (66,395) | (22,180)
Net cash used in financing activities | (715,026) | (440,774)
Net increase (decrease) in cash and cash equivalents | 158,926 | (4,648)
Cash and cash equivalents at beginning of period | 217,374 | 262,994
Cash and cash equivalents at end of period | 376,300 | 258,346
Non-cash operating activities: |  |
Right-of-use assets obtained in exchange for lease obligations | $ 0 | $ 15,313

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