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v3.22.1

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Cash flows from operating activities: |  |
Net loss | $ (1,490) | $ (2,021)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Common stock issued for services | 7 | 9
Share based compensation | 80 | 620
Depreciation and amortization | 36 | 46
Gain from sale of fixed assets | (23) |
Reserve for prepaid materials |  | 96
Change in operating assets and liabilities: |  |
Contract assets | (205) | (247)
Accounts receivable | 6 | (124)
Prepaid expenses and other assets | (56) | 127
Accounts payable and accrued liabilities | 57 | 2
Accrued compensation and related taxes | 85 | 25
Contract liabilities |  | (46)
Net cash used in operating activities | (1,503) | (1,513)
Cash flows from investing activities: |  |
Acquisition of fixed assets | (5) | (54)
Disbursements for patents and other intangible assets | (33) | (34)
Proceeds from sale of fixed assets | 23 |
Net cash used in investing activities | (15) | (88)
Cash flows from financing activities: |  |
Proceeds from issuance of common stock, net of offering costs | 578 | 3,393
Proceeds from exercise of stock options and warrants |  | 109
Net cash provided by financing activities | 578 | 3,502
Net change in cash and cash equivalents | (940) | 1,901
Cash and cash equivalents, beginning of period | 7,607 | 8,824
Cash and cash equivalents, end of period | 6,667 | 10,725
Supplemental disclosure of cash flow information: |  |
Officer and employee equity awards for prior year accrued compensation | $ 107 | $ 217

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