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v3.23.1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Operating activities |  |
Net loss | $ (15,641) | $ (12,284)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 635 | 865
Stock-based compensation | 5,669 | 6,426
Non-cash operating lease cost | 471 | 396
Changes in valuation of warrant investment |  | 281
Net gain on sale of available-for-sale securities | 3 | 26
Unrealized gain on investments | (53) | (820)
Impairment of long-lived assets |  | 542
Non-cash interest expense | 118 | 166
Foreign currency remeasurement (gain) loss | (767) | 287
Changes in operating assets and liabilities: |  |
Accounts receivable | 9,157 | (564)
Inventories | (5,996) | (834)
Prepaid and other assets | (1,435) | (4,111)
Accounts payable | 4,831 | (4,121)
Accrued liabilities and other non-current liabilities | (6,596) | (8,296)
Deferred product revenue | 1,104 | 585
Net cash used in operating activities | (8,500) | (21,456)
Investing activities |  |
Capital expenditures | (1,524) | (113)
Purchases of investments | (562) | (642)
Proceeds from maturities and sale of investments | 440 | 9,377
Net cash (used in) provided by investing activities | (1,646) | 8,622
Financing activities |  |
Net proceeds from equity incentives | 492 | 2,135
Net costs from public offerings | (72) |
Net proceeds on revolving line of credit | 3,091 | 314
Repayment of loans | (1,450) |
Net cash provided by financing activities | 2,061 | 2,449
Effect of exchange rates on cash, cash equivalents, and restricted cash | 116 | (284)
Net decrease in cash, cash equivalents, and restricted cash | (7,969) | (10,669)
Cash, cash equivalents and restricted cash, beginning of period | 37,358 | 51,044
Cash, cash equivalents and restricted cash, end of period | $ 29,389 | $ 40,375

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