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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Cash flows from operating activities: |  |
Net income | $ 1,584 | $ 3,758
Adjustments to reconcile net income to net cash (used in) provided by operating activities: |  |
Depreciation and amortization | 15,892 | 15,341
Deferred income taxes | 2,177 | 6,476
Stock-based compensation | 10,249 | 10,754
Unrealized (gain) loss on foreign currency transactions | (672) | 42
Provisions for inventory, warranty and bad debt | 9,348 | 11,876
Amortization of premium/discount on investments | (1,308) | (3,878)
Other | 979 | 1,402
Changes in assets and liabilities that (used) provided cash: |  |
Accounts receivable | (11,843) | (4,113)
Inventories | (19,417) | (8,967)
Prepaid expenses and other assets | (11,434) | (6,087)
Accounts payable | 17,281 | 5,491
Accrued expenses and other current liabilities | (4,960) | (6,965)
Income and other taxes payable | (13,339) | (11,685)
Net cash (used in) provided by operating activities | (5,463) | 13,445
Cash flows from investing activities: |  |
Purchases of and deposits on property, plant and equipment | (16,311) | (24,818)
Proceeds from sales of property, plant and equipment | 812 | 183
Purchases of investments | (32,870) | (333,009)
Proceeds from maturities of investments | 143,538 | 83,206
Other | 77 | 52
Net cash provided by (used in) investing activities | 95,246 | (274,386)
Cash flows from financing activities: |  |
Payments for taxes related to net share settlement of equity awards less proceeds from issuance of common stock under employee stock option plans | (11,712) | (5,775)
Purchase of treasury stock net of excise tax, at cost | 0 |
Purchase of treasury stock net of excise tax, at cost |  | 105
Net cash used in financing activities | (11,712) | (5,670)
Effect of changes in exchange rates on cash and cash equivalents | (1,100) | 9,617
Net increase (decrease) in cash and cash equivalents | 76,971 | (256,994)
Cash and cash equivalents — Beginning of period | 403,790 | 620,040
Cash and cash equivalents — End of period | 480,761 | 363,046
Supplemental disclosure of cash flow information: |  |
Cash paid for interest | 3 | 5
Cash paid for income taxes, net of refunds | 7,689 | 10,574
Non-cash transactions: |  |
Demonstration units transferred from inventory to other assets | 1,917 | 1,532
Inventory transferred to machinery and equipment | 3,532 | 644
Additions to property, plant and equipment included in accounts payable | 2,433 | 2,462
Leased assets obtained in exchange for new operating lease liabilities | 854 | 2,979
Excise tax on net share repurchases accrued in period | $ 0 | $ (105)

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