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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Operating Activities: |  |
Net loss | $ (85,217) | $ (93,373)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Impairment of long-lived assets | 5,521 | 20,433
Depreciation and amortization | 2,648 | 7,745
Accretion of discount on marketable securities | (273) | (1,865)
Amortization in operating lease right-of-use assets | 2,451 | 4,018
Stock-based compensation | 5,784 | 15,067
Other non-cash adjustments | 103 | 0
Impairment of goodwill and indefinite-lived intangible assets | 0 | 89,485
Deferred income tax benefit | 0 | (6,377)
Net changes in operating assets and liabilities: |  |
Interest receivable | 370 | (425)
Accounts receivable | 342 | 962
Prepaid expenses and other assets | 3,565 | 5,548
Accounts payable and other accrued liabilities | (4,654) | (3,101)
Accrued compensation and employee benefits | (3,195) | (8,450)
Lease liabilities | (2,822) | (2,455)
Other non-current liabilities | 36 | 61
Deferred revenues | 0 | (154,284)
Net cash used in operating activities | (75,547) | (127,011)
Investing Activities: |  |
Purchases of marketable securities | 0 | (52,112)
Maturities of marketable securities | 1,110 | 146,048
Sales of marketable securities | 34,730 | 0
Sales of assets classified as held for sale | 127 | 0
Purchases of property and equipment | 0 | (15,740)
Net cash provided by investing activities | 35,967 | 78,196
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 | 15,105
Taxes paid related to net share settlement of equity awards | (481) | (1,303)
Proceeds from issuance of common stock under employee stock purchase plan | 146 | 719
Net cash provided by financing activities | 21,589 | 14,521
Effect of exchange rate changes on cash, cash equivalents, and restricted cash | (927) | 680
Net (decrease) increase in cash, cash equivalents, and restricted cash | (18,918) | (33,614)
Cash, cash equivalents, and restricted cash, beginning of period | 46,704 | 101,944
Cash, cash equivalents, and restricted cash, end of period | 27,786 | 68,330
Supplemental cash flow disclosures: |  |
Property and equipment included in unpaid liabilities | $ 433 | $ 4,909

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