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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Cash flows used in operating activities: |  |
Net income (loss) | $ (12,250) | $ (6,201)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 223 | 325
Amortization of deferred financing costs and debt discount |  | 20
Share-based compensation expense | 300 | 297
Noncash financing expenses | 3,061 | 3,545
Change in fair value of derivative instruments | 2,631 | (4,694)
Accretion of discount on short-term investments | (22) | (23)
Reduction in the carrying amount of operating lease right-of-use assets | 44 | 63
Gain on sale of assets | (16) |
Increases (decreases) in cash caused by changes in operating assets and liabilities: |  |
Grant receivable | (450) |
Other current assets | (265) | 335
Accounts payable and accrued expenses | (5,181) | 360
Change in operating lease liabilities | (45) | (63)
Deferred grant liability |  | 373
Net cash used in operating activities | (11,970) | (5,663)
Cash flows used in investing activities: |  |
Purchases of property and equipment | (10) | (121)
Purchase of short-term investments | (7,756) | (3,500)
Redemption of short-term investments | 6,662 |
Purchase of intangible assets |  | (545)
Proceeds from sale of property and equipment | 30 |
Net cash used in investing activities | (1,074) | (4,166)
Cash flows provided by financing activities: |  |
Principal payments of term loan obligation |  | (3,996)
Proceeds from credit facility |  | 3,292
Repayment of line of credit facility | (3,292) |
Repayment of notes payable | (3,703) |
Issuance of notes payable and warrants | 3,738 |
Proceeds from exercise of Series B Warrants from May 2024 PIPE | 882 |
Purchase of treasury stock |  | (374)
Proceeds from sale of common stock, pre-funded warrants and warrants | 15,001 | 7,310
Proceeds from sale of common stock under Lincoln Park Purchase Agreement | 2,795 |
Costs from sale of common stock | (220) | (45)
Net cash provided by financing activities | 15,201 | 6,187
Net increase (decrease) in cash and cash equivalents | 2,157 | (3,642)
Cash and cash equivalents at beginning of period | 76 | 8,554
Cash and cash equivalents at end of period | 2,233 | 4,912
Cash paid during period for: |  |
Interest | 539 | 32
Supplemental schedule of non-cash investing and financing activities: |  |
Exchange of warrants for notes payable | 3,694 |
Redemption of notes by issuance of common stock, pre-funded warrants and warrants | 3,512 |
Unpaid offering cost | $ 252 | $ 375

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