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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Cash flows from operating activities: |  |
Net loss | $ (106,254) | $ (86,406)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 9,932 | 5,465
Write-off of inventory and change in inventory reserve | 1,612 | 1,582
Adjustment to property and equipment for sales type leases | 0 | (625)
Loss from impairment of property and equipment | 322 | 1,161
Stock-based compensation | 24,151 | 22,498
Non-cash interest expense | 22 | 55
Accretion of discount on marketable securities | (575) | 0
Non-cash lease expense | 478 | 811
Change in allowance for expected credit losses | 382 | 150
Loss on extinguishment of debt | 626 | 0
Change in fair value of earn-out liability | 14,901 | (6,988)
Change in fair value of contingently issuable common stock | 3,138 | (1,872)
Change in fair value of public warrant liability | 4,765 | (4,906)
Changes in operating assets and liabilities |  |
Accounts receivable | 8,927 | (25,593)
Inventory | (644) | (8,495)
Commission assets | (2,407) | (3,675)
Contract assets | 80 | 639
Other assets | 633 | (419)
Prepaid expenses and other current assets | (2,566) | (3,174)
Accounts payable | (5,963) | 7,661
Deferred revenue | 35,522 | 26,887
Accrued expenses and other current liabilities | 3,732 | 1,462
Operating lease liability | (615) | (946)
Net cash used in operating activities | (9,801) | (74,728)
Cash flows from investing activities: |  |
Development of internal-use software | (3,535) | (2,720)
Purchases of property and equipment | (69,134) | (21,473)
Proceeds from sale of property and equipment | 270 | 312
Purchases of marketable securities | (89,898) | 0
Proceeds from maturities of marketable securities | 39,184 | 0
Net cash used in investing activities | (123,113) | (23,881)
Cash flows from financing activities: |  |
Proceeds from exercise of stock options | 668 | 827
Proceeds from long-term debt | 1,876 | 29,683
Repayment of principal on long-term debt | (31,876) | (10,000)
Payment of debt issuance costs and prepayment penalty | (332) | 0
Net cash provided by (used in) financing activities | (29,664) | 20,510
Effect of exchange rate changes on cash and cash equivalents | (43) | (10)
Net increase (decrease) in cash, cash equivalents and restricted cash | (162,621) | (78,109)
Cash, cash equivalents and restricted cash |  |
Cash, cash equivalents and restricted cash at beginning of period | 230,058 | 308,167
Cash, cash equivalents and restricted cash at end of period | 67,437 | 230,058
Supplemental disclosure of cash flow information |  |
Cash paid for interest | 710 | 581
Supplemental disclosure of non-cash activities |  |
Transfer of property and equipment to inventory | 218 | 0
Capital expenditures incurred but not yet paid | 13,322 | 7,552
Capitalization of stock compensation | 516 | 205
Finback exercise price | 464 | 0
Reconciliation of cash, cash equivalents and restricted cash: |  |
Cash and cash equivalents | 67,162 | 229,783
Restricted cash | 275 | 0
Restricted cash, noncurrent | 0 | 275
Total cash, cash equivalents and restricted cash shown in the statements of cash flows | $ 67,437 | $ 230,058

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