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v3.23.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Cash flows from operating activities: |  |
Net loss | $ (5,758) | $ (7,892)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Common stock issued for services | 26 | 33
Share-based compensation | 373 | 680
Depreciation and amortization | 161 | 260
Impairment of intangible assets | 19 | 484
Gain from sale of fixed assets | (38) |
Right of use asset amortization | 131 | 188
Realized gain from market securities | (45) |
Gain on forgiveness of Payroll Protection Program Loan and interest |  | (251)
Change in operating assets and liabilities: |  |
Contract assets | 19 | 53
Accounts receivable | (46) | (33)
Prepaid expenses and other assets | (232) | 121
Accounts payable and accrued liabilities | (125) | (393)
Accrued compensation and related taxes | 360 | 53
Contract liabilities | 163 | (10)
Net cash used in operating activities | (4,992) | (6,707)
Cash flows from investing activities: |  |
Acquisition of fixed assets | (10) | (73)
Disbursements for patents and other intangible assets | (154) | (140)
Proceeds from sale of fixed assets | 39 |
Purchases of held-to-maturity short-term US treasuries | (5,898) |
Redemption of held-to-maturity US treasuries | 3,337 |
Net cash used in investing activities | (2,686) | (213)
Cash flows from financing activities: |  |
Proceeds from issuance of common stock, net of offering costs | 6,539 | 5,309
Proceeds from exercise of stock options and warrants |  | 385
Net cash provided by financing activities | 6,539 | 5,694
Effect of exchange rate changes on cash and cash equivalents | (17) | 9
Net change in cash and cash equivalents | (1,156) | (1,217)
Cash and cash equivalents, beginning of period | 7,607 | 8,824
Cash and cash equivalents, end of period | 6,451 | 7,607
Supplemental disclosure of cash flow information: |  |
Officer and employee equity awards for prior year accrued compensation | $ 107 | $ 217

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