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CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Cash flows used in operating activities: |  |  |  |  |  |  |
Net loss | $ (5,219) | $ (4,116) | $ (3,724) | $ (2,720) | $ (14,617) | $ (9,244) |
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  | 460 | 266 |
Amortization of deferred financing costs and debt discount |  |  |  |  | 309 | 417 |
In process research and development acquired |  |  |  |  | 0 | 18 |
Change in fair value of liability instruments |  |  |  |  | (1) | (4) |
Stock-based compensation expense |  |  |  |  | 476 | 425 |
Non-cash lease expense |  |  |  |  | (35) | 36 |
Increases (decreases) in cash caused by changes in operating assets and liabilities: |  |  |  |  |  |  |
Grant Receivable |  |  |  |  | 73 | 0 |
Other current assets |  |  |  |  | 642 | 12 |
Accounts payable and accrued expenses |  |  |  |  | 1,955 | 418 |
Net cash used in operating activities |  |  |  |  | (10,738) | (7,656) |
Cash flows used in investing activities: |  |  |  |  |  |  |
Purchases of property and equipment |  |  |  |  | (381) | (134) |
Purchase of intangible assets |  |  |  |  | (117) |  |
Proceeds from sale of property and equipment |  |  |  |  | 0 | 50 |
In process research and development acquired |  |  |  |  | (250) | 0 |
Net cash used in investing activities |  |  |  |  | (748) | (84) |
Cash flows from financing activities: |  |  |  |  |  |  |
Principal payments of long-term obligations |  |  |  |  | (1,206) | 0 |
Payment of financing lease liability |  |  |  |  | 0 | (8) |
Proceeds from exercise of warrants |  |  |  |  | 0 | 2,017 |
Proceeds from sale of common stock, net |  |  |  |  | 14,558 | 18,665 |
Net cash provided by financing activities |  |  |  |  | 13,352 | 20,674 |
Net increase in cash and cash equivalents |  |  |  |  | 1,866 | 12,934 |
Cash and cash equivalents at beginning of period |  | $ 18,400 |  | $ 8,346 | 18,400 | 8,346 | $ 8,346
Cash and cash equivalents at end of period | $ 20,266 |  | $ 21,280 |  | 20,266 | 21,280 | $ 18,400
Cash paid during period for: |  |  |  |  |  |  |
Interest |  |  |  |  | 248 | 292 |
Supplemental schedule of non-cash investing and financing activities: |  |  |  |  |  |  |
Unpaid offering cost |  |  |  |  | 68 | 139 |
Right-of-use asset obtained in exchange for lease liabilities |  |  |  |  | $ 0 | $ 81 |

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