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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Operating Activities: |  |  |
Net loss | $ (545,062) | $ (657,939) | $ (1,743,751)
Reconciliation of net loss to net cash used in operating activities: |  |  |
Depreciation and amortization | 41,225 | 29,054 | 12,661
Right-of-use assets expensed, net of credits received | 6,113 | 18,104 | 144,433
Non-cash stock-based compensation | 85,357 | 130,300 | 183,626
Provision for excess and obsolete inventory | 72,197 | 447,597 | 0
Impairment of long-lived assets | 10,081 | 0 | 0
Other items, net | (7,042) | (21,903) | (7,641)
Changes in operating assets and liabilities: |  |  |
Inventory | (74,457) | (477,801) | (8,872)
Accounts receivable, prepaid expenses, and other assets | (274,442) | 249,166 | (183,393)
Accounts payable, accrued expenses, and other liabilities | (378,805) | 913,399 | 600,326
Deferred revenue | 350,868 | (1,045,914) | 1,325,557
Net cash provided by (used in) operating activities | (713,967) | (415,937) | 322,946
Investing Activities: |  |  |
Capital expenditures | (53,771) | (89,056) | (54,501)
Internal-use software | (5,035) | (3,929) | (2,985)
Purchases of marketable securities | 0 | 0 | (2,167)
Proceeds from maturities of marketable securities | 0 | 0 | 159,807
Net cash provided by (used in) investing activities | (58,806) | (92,985) | 100,154
Financing Activities: |  |  |
Net proceeds from sales of common stock | 360,243 | 249,230 | 564,859
Proceeds from issuance of 2027 Convertible notes | 0 | 175,250 | 0
Payments of costs related to issuance of 2027 Convertible notes | (3,591) | (5,258) | 0
Net proceeds from the exercise of stock-based awards | 159 | (639) | 24,761
Repayment of 2023 Convertible notes | (325,000) | 0 | 0
Finance lease payments | (27,345) | (93,595) | (127,907)
Net cash provided by financing activities | 4,466 | 324,988 | 461,713
Effect of exchange rate on cash, cash equivalents, and restricted cash | 3,272 | 4,520 | (5,292)
Net (decrease) increase in cash, cash equivalents, and restricted cash | (765,035) | (179,414) | 879,521
Cash, cash equivalents, and restricted cash at beginning of year | 1,348,845 | 1,528,259 | 648,738
Cash, cash equivalents, and restricted cash at end of year | 583,810 | 1,348,845 | 1,528,259
Supplemental disclosure of non-cash activities: |  |  |
Sale of common stock under the Sales Agreement not settled at year-end | 6,862 | 0 | 0
Capital expenditures included in accounts payable and accrued expenses | 7,899 | 17,665 | 10,338
Right-of-use assets from new lease agreements | 103,299 | 91,855 | 179,210
Supplemental disclosure of cash flow information: |  |  |
Cash interest payments, net of amounts capitalized | 17,349 | 18,035 | 19,428
Cash paid for income taxes | $ 190 | $ 17,980 | $ 12,606

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