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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Operating activities |  |
Net loss | $ (18,399) | $ (36,258)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: |  |
Depreciation and amortization | 1,523 | 1,952
Stock-based compensation | 17,363 | 15,368
Non-cash operating lease cost | 1,929 | 1,563
Net loss on sale of available-for-sale securities | 4 | 50
Unrealized gain on investments | (218) | (1)
Loss on disposal of fixed assets | 3 |
Impairment charges for facilities consolidation |  | 1,698
Non-cash interest expense | 297 | 290
Foreign currency remeasurement gain | (141) | (1,396)
Changes in operating assets and liabilities: |  |
Accounts receivable | 11,128 | 9,687
Inventories | 8,020 | (19,519)
Prepaid and other assets | (2,188) | (1,509)
Accounts payable | (7,825) | 8,089
Accrued liabilities and other non-current liabilities | (4,886) | (8,346)
Deferred revenue | (180) | 347
Net cash provided by (used in) operating activities | 6,430 | (27,985)
Investing activities |  |
Capital expenditures | (1,861) | (4,603)
Purchases of investments | (18,741) | (2,404)
Proceeds from maturities and sale of investments | 19,758 | 7,415
Net cash (used in) provided by investing activities | (844) | 408
Financing activities |  |
Net proceeds from equity incentives | 804 | 925
Net costs from public offerings | (107) | (137)
Net (payment on) proceeds from revolving line of credit | (1,479) | 3,870
Proceeds from loans | 5,000 | 5,000
Debt issuance costs |  | (168)
Net cash provided by financing activities | 4,218 | 9,490
Effect of exchange rates on cash, cash equivalents, and restricted cash | 46 | (112)
Net increase (decrease) in cash, cash equivalents, and restricted cash | 9,850 | (18,199)
Cash, cash equivalents, and restricted cash, beginning of period | 13,359 | 37,358
Cash, cash equivalents, and restricted cash, end of period | $ 23,209 | $ 19,159

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