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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Cash flows from operating activities: |  |  |  |  |  |  |
Net loss | $ (9,937) | $ (9,151) | $ (6,749) | $ (6,172) | $ (26,129) | $ (17,647) | $ (25,788)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  | 80 | 69 |
Equity-based compensation |  |  |  |  | 3,214 | 3,283 |
Amortization of right-of-use assets |  |  |  |  | 115 | 117 |
Loss on currency translation from liquidation of subsidiary |  |  |  |  | 195 |  |
Issuance of common stock as commitment shares for equity line financing |  |  |  |  |  | 318 |
Changes in operating assets and liabilities: |  |  |  |  |  |  |
Grant receivables |  |  |  |  | (2,088) | 2,034 |
Prepaid expenses and other assets |  |  |  |  | 1,569 | 962 |
Accounts payable and accrued expenses |  |  |  |  | 3,650 | 1,837 |
Deferred grant income and other liabilities |  |  |  |  | (584) | (1,426) |
Operating lease liabilities |  |  |  |  | (114) | (109) |
Net cash used in operating activities |  |  |  |  | (20,092) | (10,562) |
Cash flows from investing activities: |  |  |  |  |  |  |
Payments for property and equipment |  |  |  |  | (3) | (117) |
Net cash used in investing activities |  |  |  |  | (3) | (117) |
Cash flows from financing activities: |  |  |  |  |  |  |
Proceeds from the exercise of common stock options |  |  |  |  | 82 |  |
Payment of employee withholding taxes on vested restricted stock units |  |  |  |  | (128) |  |
Payments on loan payable |  |  |  |  | (544) | (632) |
Net cash provided by financing activities |  |  |  |  | 12,184 | 2,082 |
Effect of exchange rate changes on cash and cash equivalents |  |  |  |  |  | 4 |
Net decrease in cash and cash equivalents |  |  |  |  | (7,911) | (8,593) |
Cash and cash equivalents |  |  |  |  |  |  |
Cash and cash equivalents - beginning of period |  | $ 29,922 |  | $ 41,562 | 29,922 | 41,562 | 41,562
Cash and cash equivalents - end of period | $ 22,011 |  | $ 32,969 |  | 22,011 | 32,969 | $ 29,922
At The Market Offering |  |  |  |  |  |  |
Cash flows from financing activities: |  |  |  |  |  |  |
Proceeds from issuance of common stock |  |  |  |  | 878 | 2,509 |
Follow-on Public Offering |  |  |  |  |  |  |
Cash flows from financing activities: |  |  |  |  |  |  |
Proceeds from issuance of common stock |  |  |  |  | $ 11,896 |  |
Equity Line Financing |  |  |  |  |  |  |
Cash flows from financing activities: |  |  |  |  |  |  |
Proceeds from issuance of common stock |  |  |  |  |  | $ 205 |

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