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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 income (loss) | $ (74,545) | $ (197,536)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Impairment of long-lived assets | 5,521 | 65,232
Depreciation and amortization | 3,866 | 13,238
Accretion of discount and impairment on marketable securities | (273) | (2,031)
Amortization in operating lease right-of-use assets | 3,360 | 5,945
Stock-based compensation | 9,099 | 21,256
Other non-cash adjustments | (4) | 1,119
Impairment of goodwill and indefinite-lived intangible assets | 0 | 89,485
Deferred income tax benefit | 18 | (6,195)
Net changes in operating assets and liabilities: |  |
Interest receivable | 402 | 192
Accounts receivable | (9,573) | 2,530
Prepaid expenses and other assets | 6,403 | 5,159
Accounts payable and other accrued liabilities | (6,851) | (5,220)
Accrued compensation and employee benefits | 2,060 | (4,182)
Lease liabilities | (4,081) | (3,737)
Other non-current liabilities | 36 | 112
Deferred revenues | 774 | (159,671)
Net cash used in operating activities | (63,788) | (174,304)
Investing Activities: |  |
Purchases of marketable securities | 0 | (59,551)
Maturities of marketable securities | 1,110 | 193,858
Proceeds from sale of marketable securities | 34,730 | 0
Proceeds from sale of assets classified as held for sale | 475 | 0
Purchases of property and equipment | (115) | (18,484)
Net cash provided by investing activities | 36,200 | 115,823
Financing Activities: |  |
Proceeds from issuance of common stock, net of offering expenses | 21,924 | 0
Proceeds from at-the-market offering, net of offering expenses | 0 | 15,106
Taxes paid related to net share settlement of equity awards | (684) | (1,404)
Proceeds from issuance of common stock under employee stock purchase plan | 146 | 719
Net cash provided by financing activities | 21,386 | 14,421
Effect of exchange rate changes on cash, cash equivalents, and restricted cash | 199 | 130
Net decrease in cash, cash equivalents, and restricted cash | (6,003) | (43,930)
Cash, cash equivalents, and restricted cash, beginning of period | 46,704 | 101,944
Cash, cash equivalents, and restricted cash, end of period | 40,701 | 58,014
Supplemental cash flow disclosures: |  |
Property and equipment included in unpaid liabilities | $ 389 | $ 2,757

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