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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Operating Activities: |  |
Net loss | $ (15,179) | $ (27,016)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 1,927 | 1,944
Amortization of right-of-use lease assets | 33 | 85
Amortization of debt issuance costs and premium | 0 | 283
Loss on extinguishment of debt | 0 | 362
Amortization of discount on short-term investments | (3,578) | (2,953)
Stock-based compensation | 10,801 | 7,250
Provision for excess and obsolete inventory | 167 | 14
Change in operating assets and liabilities: |  |
Accounts receivable | (5,441) | (2,338)
Inventories | (2,189) | (3,124)
Prepaid and other assets | 673 | 868
Accounts payable | 789 | 1,324
Accrued expenses and other liabilities | (1,339) | (2,009)
Net cash used in operating activities | (13,336) | (25,310)
Investing Activities: |  |
Purchases of property and equipment | (3,490) | (2,570)
Maturities of short-term investments | 119,000 | 115,000
Purchases of short-term investments | (206,881) | (156,400)
Net cash (used in) provided by investing activities | (91,371) | (43,970)
Financing Activities: |  |
Proceeds from term loan | 0 | 20,000
Repayment of term loan | 0 | (40,000)
Proceeds from issuance of common stock from public offering | 108,100 | 54,050
Proceeds from issuance of common stock from at-the-market offerings | 0 | 30,496
Proceeds from issuance of common stock | 13,993 | 3,896
Payments for employee taxes related to stock compensation | (2,133) | (337)
Principal payments on finance lease liabilities | (38) | (82)
Payments of deferred offering costs | (377) | (602)
Payments of debt issuance costs | (80) | (1,225)
Net cash provided by financing activities | 119,465 | 66,196
Effect of foreign exchange rate on cash, cash equivalents and restricted cash | (4) | 3
Net increase (decrease) in cash, cash equivalents and restricted cash | 14,754 | (3,081)
Cash, cash equivalents and restricted cash - beginning of period | 10,402 | 12,595
Cash, cash equivalents and restricted cash - end of period | 25,156 | 9,514
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows from operating leases | 1,128 | 1,107
Cash paid for income taxes | 24 | 12
Cash paid for interest on financing leases | 11 | 7
Cash paid for interest on term loan | 0 | 3,240
Right-of-use assets obtained in exchange for lease obligations: |  |
Operating lease | 9,060 | 0
Finance lease | 19 | 0
Lease obligations recorded for right-of-use assets: |  |
Operating lease | 9,060 | 0
Finance lease | 19 | 0
Acquisition of property and equipment included in accounts payable and accrued expenses and other current liabilities | 229 | 408
Deferred offering costs included in accounts payable and accrued liabilities | 392 | 187
Reclassification of deferred financing costs | $ (768) | $ (1,075)

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