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v3.23.3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Cash flows from operating activities: |  |
Net loss | $ (238,008) | $ (237,785)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Stock-based compensation | 50,718 | 66,354
Depreciation and amortization | 10,722 | 11,227
Net amortization/accretion on investment securities | (3,510) | 2,735
Non-cash rent expense | 504 | 2,193
Share of loss from, and impairment of, equity method investment | 7,452 | 3,959
Changes in operating assets and liabilities: |  |
Prepaid expenses and other current assets | 3,555 | (2,811)
Other long-term assets | (421) | (3,211)
Accounts payable | (7,200) | 1,930
Accrued and other current liabilities | (7,106) | (1,388)
Deferred revenue | (649) | 466
Other long-term liabilities | (83) | (2,092)
Net cash used in operating activities | (184,026) | (158,423)
Cash flows from investing activities: |  |
Purchases of property and equipment | (1,335) | (3,499)
Proceeds from sales of investments | 5,623 | 0
Proceeds from maturities of investments | 461,467 | 260,379
Purchase of investments | (369,927) | (200,318)
Net cash provided by investing activities | 95,828 | 56,562
Cash flows from financing activities: |  |
Proceeds from issuance of common stock from ATM offering, net of commissions and issuance costs | 91,112 | 0
Proceeds from issuance of common stock upon exercise of stock options | 1,932 | 443
Proceeds from issuance of common stock under the employee stock purchase plan | 2,496 | 2,461
Net cash provided by financing activities | 95,540 | 2,904
Net change in cash and cash equivalents and restricted cash | 7,342 | (98,957)
Cash and cash equivalents and restricted cash — beginning of period | 72,196 | 183,606
Cash and cash equivalents and restricted cash — end of period | 79,538 | 84,649
Non-cash investing activities: |  |
Right-of-use asset obtained in exchange for lease liability | 0 | 31,361
Supplemental disclosure: |  |
Cash paid for amounts included in the measurement of lease liabilities | (9,013) | (6,605)
Cash received for amounts related to tenant improvement allowances | $ 0 | $ 325

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