v3.25.1
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Cash flows from operating activities:    
Net loss $ (80,691) $ (125,714)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 4,413 8,066
Amortization of operating lease right-of-use assets 1,918 2,010
Amortization of premium (discount) on marketable securities (494) (870)
Loss on marketable securities 1,275 2,320
Change in fair value of private warrants 1 (821)
Vendor stock in lieu of cash program 2,676 4,034
Amortization of debt discount and issuance costs 1,886 809
Inventory write-offs and write-downs 2,264 16,903
Change in the fair value of the derivatives 3,671 0
Gain or write-off on sale or disposal of property and equipment 290 0
Share-based compensation, including restructuring costs 19,380 44,465
Gain on extinguishment of debt (6,775) 0
Loss from acquisition of EM4 48 (1,752)
Change in product warranty and other 328 (1,684)
Changes in operating assets and liabilities:    
Accounts receivable (14,198) (13,846)
Inventories (1,570) (17,586)
Prepaid expenses and other current assets 11,110 (7,495)
Other non-current assets 866 (1,071)
Accounts payable 7,623 6,128
Accrued and other current liabilities 3,816 7,445
Other non-current liabilities (2,066) (2,570)
Net cash used in operating activities (44,229) (81,229)
Cash flows from investing activities:    
Purchases of marketable securities (34,547) (48,827)
Proceeds from maturities of marketable securities 40,224 88,990
Proceeds from sales/redemptions of marketable securities 14,388 274
Purchases of property and equipment (115) (1,284)
Proceeds from disposal of property and equipment 253 0
Net cash provided by investing activities 20,445 34,426
Cash flows from financing activities:    
Proceeds from exercise of stock options 0 371
Payments of employee taxes related to stock-based awards (110) (126)
Net cash provided by financing activities 284 17,475
Net increase (decrease) in cash, cash equivalents and restricted cash (23,500) (29,328)
Beginning cash, cash equivalents and restricted cash 84,722 140,624
Ending cash, cash equivalents and restricted cash 61,222 111,296
Supplemental disclosures of cash flow information:    
Cash paid for interest 9,898 0
Supplemental disclosures of noncash investing and financing activities:    
Recognition/derecognition of operating lease right-of-use asset and liability 0 3,842
Purchases of property and equipment recorded in accounts payable and accrued liabilities 1,066 299
Class A Common Stock | Conversion of 2023 Convertible Notes    
Supplemental disclosures of noncash investing and financing activities:    
Conversion of Convertible Notes to Class A common stock 1,127 0
Class A Common Stock | Conversion of 2026 Convertible Senior Notes    
Supplemental disclosures of noncash investing and financing activities:    
Conversion of Convertible Notes to Class A common stock 11,819 0
Equity Financing Program | Class A Common Stock    
Cash flows from financing activities:    
Net proceeds from issuance of Class A common stock under the Equity Financing Program 394 17,230
EM4    
Cash flows from investing activities:    
Acquisition of EM4 (net of cash acquired) $ 242 $ (4,727)

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