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Condensed Statement of Cash Flows - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Cash flows from operating activities |  |
Net (loss) income | $ (2,704) | $ 4,646
Adjustments to reconcile net (loss) income to net cash provided by operating activities: |  |
Depreciation and amortization | 795 | 617
Gain on sale of property and equipment |  | (15)
Stock-based compensation | 3,576 | 2,420
Loss on prepayment and termination of credit facility |  | 170
Non-cash warrant revaluation |  | 23
Non-cash interest expense |  | 26
Changes in operating assets and liabilities: |  |
Accounts receivable | 1,440 | 1,639
Inventory | 404 | (662)
Prepaid expenses and other current assets | 471 | 193
Other assets | 1 |
Accounts payable | (595) | (741)
Accrued liabilities | (2,628) | (701)
Deferred revenue | (336) | (96)
Lease liabilities, net | 4 | 12
Net cash provided by operating activities | 428 | 7,531
Cash flows from investing activities |  |
Purchases of property and equipment | (1,239) | (1,063)
Proceeds received from sale of property and equipment |  | 15
Net cash used in investing activities | (1,239) | (1,048)
Cash flows from financing activities |  |
Payments on long-term debt |  | (2,790)
Proceeds from exercise of stock options and purchase of shares in employee stock purchase plan | 629 | 342
Net cash provided by (used in) financing activities | 629 | (2,448)
Net (decrease) increase in cash and cash equivalents | (182) | 4,035
Cash and cash equivalents at beginning of period | 36,946 | 26,795
Cash and cash equivalents at end of period | 36,764 | 30,830
Supplementary cash flow information: |  |
Interest paid |  | 37
Operating cash flows paid for operating leases | 699 | 692
Financing cash flows paid for finance leases | 28 | $ 6
Non-cash investing and financing activities: |  |
Right-of-use assets obtained in exchange for finance lease liabilities | 297 |
Purchases of property and equipment in accounts payable and accrued liabilities | $ 75 |

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