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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash flows from operating activities:    
Net loss $ (4,968) $ (5,063)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:    
Depreciation 284 342
Loss on disposal of property and equipment 0 11
Amortization of intangible assets 1,484 1,485
Stock-based compensation 2,253 1,949
Deferred tax liability 19 7
Amortization of prepaid assets 132 0
Accrual of property and equipment 22 0
Changes in operating assets and liabilities:    
Trade accounts receivable (1,267) 115
Inventories (740) (571)
Prepaid expenses and other current assets 312 596
Other assets 6 6
Accounts payable (628) (877)
Accrued compensation 379 (880)
Accrued liabilities and other 432 912
Lease liabilities (42) (36)
Net cash used in operating activities (2,322) (2,004)
Cash flows from investing activities:    
Purchases of property and equipment (150) (104)
Net cash used in investing activities (150) (104)
Cash flows from financing activities:    
Proceeds from at-the-market common stock offering, net of offering costs 3,006 0
Payments for withholding taxes related to net share settlement of equity awards (95) (690)
Proceeds from employee stock purchase and option exercises 101 165
Net cash provided by (used in) financing activities 3,012 (525)
Effect of exchange rate changes on cash, cash equivalents and restricted cash (5) 0
Net increase (decrease) in cash, cash equivalents and restricted cash 535 (2,633)
Cash, cash equivalents, and restricted cash; beginning of period 7,976 12,078
Cash, cash equivalents, and restricted cash; end of period 8,511 9,445
Supplemental disclosure of cash flow information:    
Income taxes paid 38 64
Income taxes refunded 50 0
Supplemental disclosure of non-cash investing and financing activities:    
Operating lease liabilities resulting from right-of-use assets 179 11
Accrual of property and equipment 0 29
Accrued offering costs charged against proceeds from sale of common stock 10 0
Cash and cash equivalents 8,416 9,270
Restricted cash included in prepaid expenses and other current assets and other assets long term 95 175
Total cash, cash equivalents, and restricted cash $ 8,511 $ 9,445

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