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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Cash flows from operating activities: |  |
Net loss | $ (14,551,000) | $ (13,755,000)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization expense | 948,000 | 452,000
Write down of inventory | 324,000 |
Adjustment to property and equipment for sales type leases | (321,000) |
Loss from impairment of property and equipment | 96,000 | 0
Stock-based compensation | 5,190,000 | 1,082,000
Noncash interest expense | 5,000 | 2,344,000
Noncash lease expense | 197,000 |
Recovery of allowance for doubtful accounts |  | (63,000)
Change in fair value of derivative liability |  | 1,425,000
Change in fair value of common stock warrant liability |  | 736,000
Change in fair value of earn-out liability | (4,226,000) |
Change in fair value of contingently issuable common stock | (1,472,000) |
Change in fair value of public warrant liability | (5,586,000) | 0
Changes in operating assets and liabilities |  |
Accounts receivable | (2,112,000) | (874,000)
Inventory | (6,985,000) | (433,000)
Commission assets | (351,000) | (391,000)
Contract assets | 108,000 | (119,000)
Prepaid expenses and other current assets | (5,280,000) | (4,104,000)
Accounts payable | (1,867,000) | 1,194,000
Deferred revenue | 2,778,000 | (621,000)
Deferred rent | (468,000) | (11,000)
Accrued expenses and other current liabilities | (2,065,000) | 1,100,000
Operating lease liabilities | (229,000) |
Net cash used in operating activities | (35,867,000) | (12,038,000)
Cash flows from investing activities: |  |
Development of internal-use software | (646,000) |
Purchases of property and equipment | (323,000) | (2,522,000)
Net cash used in investing activities | (969,000) | (2,522,000)
Cash flows from financing activities: |  |
Proceeds from exercise of stock options | 216,000 | 455,000
Repayment of financing obligations |  | (359,000)
Proceeds from long-term debt, net of issuance costs |  | 31,882,000
Net cash provided by financing activities | 216,000 | 31,978,000
Net increase (decrease) in cash, cash equivalents and restricted cash | (36,620,000) | 17,418,000
Cash, cash equivalents and restricted cash |  |
Cash, cash equivalents and restricted cash at beginning of period | 308,167,000 | 4,704,000
Cash, cash equivalents and restricted cash at end of period | 271,547,000 | 22,122,000
Supplemental disclosure of cash flow information |  |
Cash paid for interest | 133,000 | 103,000
Supplemental disclosure of non-cash activities |  |
Transfer of inventory to property and equipment | 4,620,000 |
Capital expenditures incurred but not yet paid | $ 1,693,000 |
Issuance of equity classified warrants |  | $ 1,000

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