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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 | $ (19,608) | $ (24,663)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and write-off of property and equipment | 391 | 688
Amortization of acquired intangible assets | 2,815 | 2,739
Amortization and write-off of other intangible assets | 438 | 338
Amortization of lease right of use assets under operating leases | 173 | 332
Stock-based compensation | 5,237 | 5,454
Impairment of lease right of use assets and leasehold improvements | 0 | 250
Decrease in allowance for doubtful accounts | (17) | 0
Changes in operating assets and liabilities: |  |
Trade accounts receivable | (2,236) | (6,492)
Other current assets | 426 | 1,827
Other assets | (456) | (268)
Accounts payable and other accrued liabilities | (992) | (839)
Deferred revenue | (1,037) | 4,106
Lease liability and other long-term liabilities | (386) | 38
Net cash provided by (used in) operating activities | (15,252) | (16,490)
Cash flows from investing activities: |  |
Purchase of property and equipment | (132) | (121)
Capitalized patent costs | (196) | (198)
Proceeds from maturities of marketable securities | 9,623 | 19,984
Purchases of marketable securities | (14,753) | (8,664)
Net cash provided by (used in) investing activities | (5,458) | 11,001
Cash flows from financing activities: |  |
Issuance of common stock, net of issuance costs | 32,218 | 0
Purchase of common stock | (2,332) | (1,280)
Repayment of loans | (18) | (16)
Net cash provided by (used in) financing activities | 29,868 | (1,296)
Effect of exchange rate on cash | (16) | 12
Net increase (decrease) in cash and cash equivalents | 9,142 | (6,773)
Cash and cash equivalents at beginning of period | 21,456 | 33,598
Cash and cash equivalents at end of period | 30,598 | 26,825
Supplemental disclosure of cash flow information: |  |
Cash received (paid) for income taxes, net | (46) | (133)
Supplemental schedule of non-cash activities: |  |
Property and equipment and patent costs in accounts payable | 60 | 28
Stock-based compensation capitalized to software and patent costs | 20 | 27
Right of use assets obtained in exchange for lease obligations | $ 0 | $ 31

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