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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' (DEFICIT) EQUITY - USD ($) shares in Thousands, $ in Thousands | Common stock | Additional paid-in-capital | Accumulated deficit | Total
--- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2023 | $ 30 | $ 534,060 | $ (590,598) | $ (56,508)
Beginning Balance (in shares) at Dec. 31, 2023 | 1,871 |  |  |
Issuance of common stock, net of offering costs | $ 4 | 3,705 |  | 3,709
Issuance of common stock, net of offering costs (in shares) | 231 |  |  |
Stock-based compensation |  | 3,433 |  | 3,433
Issuance of stock purchase warrants |  | 224 |  | 224
Issuance of pre-funded stock purchase warrants |  | 3,570 |  | 3,570
Net Income (Loss) |  |  | (26,791) | (26,791)
Ending Balance at Mar. 31, 2024 | $ 34 | 544,992 | (617,389) | (72,363)
Ending Balance (in shares) at Mar. 31, 2024 | 2,102 |  |  |
Beginning Balance at Dec. 31, 2024 | $ 49 | 557,047 | (650,197) | $ (93,101)
Beginning Balance (in shares) at Dec. 31, 2024 | 3,102 |  |  | 3,102
Issuance of common stock, net of offering costs | $ 10 | 471 |  | $ 481
Issuance of common stock, net of offering costs (in shares) | 2,358 |  |  |
Stock-based compensation |  | 180 |  | 180
Issuance of pre-funded stock purchase warrants |  | 9,523 |  | 9,523
Vesting of restricted stock units, net of employee tax obligations |  | (1) |  | (1)
Vesting of restricted stock units, net of employee tax obligations (in shares) | 8 |  |  |
Net Income (Loss) |  |  | (7,254) | (7,254)
Ending Balance at Mar. 31, 2025 | $ 59 | $ 567,220 | $ (657,451) | $ (90,172)
Ending Balance (in shares) at Mar. 31, 2025 | 5,468 |  |  | 5,468

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