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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Operating activities: |  |
Net loss | $ (16,659) | $ (23,749)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Stock-based compensation | 13,344 | 13,754
Revaluation of common stock warrant liability to estimated fair value | 0 | (7)
Depreciation and amortization | 3,821 | 3,427
Asset impairments and write-downs | 0 | 1,000
Amortization of right-of-use assets | 1,402 | 1,337
Unrealized loss on long-term marketable equity securities | 0 | 905
Revaluation of contingent consideration to estimated fair value | 319 | 364
Amortization of premium and accretion of discount on short-term marketable securities, net | 1,451 | (773)
Changes in operating assets and liabilities: |  |
Accounts receivable | (9,199) | 7,664
Inventory | (1,274) | 1,217
Prepaid and other assets | 108 | 1,515
Operating leases liabilities, net | (1,372) | (1,333)
Accounts payable | (2,897) | 2,590
Accrued compensation | (4,820) | (4,888)
Accrued and other liabilities | 557 | (2,352)
Change in deferred taxes | (93) | 0
Net cash (used in) provided by operating activities | (15,312) | 671
Investing activities: |  |
Acquisitions of business, net of cash acquired | 0 | (4,562)
Purchases of short-term marketable securities | (57,746) | (86,310)
Maturities of short-term marketable securities | 86,893 | 78,972
Purchase of corporate equity securities | 0 | (100)
Additions of capital expenditures | (1,487) | (2,771)
Net cash provided by (used in) investing activities | 27,660 | (14,771)
Financing activities: |  |
Proceeds from issuance of common stock under employee stock purchase plan | 532 | 456
Taxes paid related to net share settlement of restricted stock units | (668) | (656)
Proceeds from exercise of stock options | 8 | 2
Payment of contingent consideration | (625) | (250)
Repurchase and retirement of common stock | (522) | (690)
Net cash used in financing activities | (1,275) | (1,138)
Effect of exchange rate changes on cash and cash equivalents | 26 | (25)
Net increase (decrease) in cash, cash equivalents and restricted cash | 11,099 | (15,263)
Cash, cash equivalents and restricted cash at beginning of period | 82,783 | 90,443
Cash, cash equivalents and restricted cash at end of period | $ 93,882 | $ 75,180

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