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STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Operating activities: |  |
Net loss | $ (16,328) | $ (13,745)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Stock-based compensation | 1,174 | 1,559
Accrual for contingent settlement liability | 1,500 |
Other expenses settled with stock issuances | 50 | 130
Loss from change in fair value of common stock make-whole obligation | 45 | 44
Depreciation and amortization | 430 | 412
Change in fair value of warrant liability |  | (3,089)
Changes in non-cash working capital balances: |  |
Account receivable | 365 | (365)
Prepaid expenses and other current assets | 39 | 270
Accounts payable | (1,289) | 1,799
Accrued liabilities | 46 | (565)
Operating lease assets and liabilities, net |  | 7
Cash used in operating activities | (13,968) | (13,543)
Investing activities: |  |
Purchases of equipment | (84) | (65)
Cash used in investing activities | (84) | (65)
Financing activities: |  |
Proceeds from issuances of Common Stock, net | 5,191 | 15,331
Repurchases of Common Stock | (200) |
Proceeds from warrant exercise |  | 1,250
Cash provided by financing activities | 16,121 | 16,728
Increase in cash and cash equivalents during the year | 2,069 | 3,120
Cash and cash equivalents, beginning of the year | 13,589 | 10,469
Cash and cash equivalents, end of the year | 15,658 | 13,589
Non-cash investing and financing activities: |  |
Series D Preferred Stock dividends settled through issuance of Common Stock | 151 |
Issuance costs related to Common Stock Purchase Agreement settled through issuance of Common Stock |  | 248
Cashless exercise of warrant |  | 926
Series C Preferred Stock |  |
Financing activities: |  |
Proceeds from issuances of Preferred Stock, net |  | $ 147
Series D Preferred Stock |  |
Financing activities: |  |
Proceeds from issuances of Preferred Stock, net | $ 11,130 |

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