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CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY/(DEFICIT) (UNAUDITED) - USD ($) | Total | Convertible Preferred Stock [Member] | Common Stock [Member] | Treasury Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit [Member] | Lincoln Park Purchase Agreement | Lincoln Park Purchase Agreement Common Stock [Member] | Lincoln Park Purchase Agreement Additional Paid-in Capital [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2023 | $ (1,348,000) |  | $ 5,000 | $ (126,000) | $ 479,274,000 | $ (480,501,000) |  |  |
Balance (in shares) at Dec. 31, 2023 |  | 1,952 | 4,522,656 |  |  |  |  |  |
Balance, Treasury (in shares) at Dec. 31, 2023 |  |  |  | (78,559) |  |  |  |  |
Stock-based compensation | 146,000 |  |  |  | 146,000 |  |  |  |
Purchase of treasury stock | (374,000) |  |  | $ (374,000) |  |  |  |  |
Purchase of treasury stock (in Shares) |  |  |  | (179,866) |  |  |  |  |
Net loss | (3,261,000) |  |  |  |  | (3,261,000) |  |  |
Balance at Mar. 31, 2024 | (4,837,000) |  | $ 5,000 | $ (500,000) | 479,420,000 | (483,762,000) |  |  |
Balance (in shares) at Mar. 31, 2024 |  | 1,952 | 4,522,656 |  |  |  |  |  |
Balance, Treasury (in shares) at Mar. 31, 2024 |  |  |  | (258,425) |  |  |  |  |
Balance at Dec. 31, 2023 | (1,348,000) |  | $ 5,000 | $ (126,000) | 479,274,000 | (480,501,000) |  |  |
Balance (in shares) at Dec. 31, 2023 |  | 1,952 | 4,522,656 |  |  |  |  |  |
Balance, Treasury (in shares) at Dec. 31, 2023 |  |  |  | (78,559) |  |  |  |  |
Net loss | (9,075,000) |  |  |  |  |  |  |  |
Balance at Sep. 30, 2024 | (5,174,000) |  | $ 6,000 | $ (500,000) | 484,896,000 | (489,576,000) |  |  |
Balance (in shares) at Sep. 30, 2024 |  | 1,952 | 6,154,758 |  |  |  |  |  |
Balance, Treasury (in shares) at Sep. 30, 2024 |  |  |  | (258,425) |  |  |  |  |
Balance at Mar. 31, 2024 | (4,837,000) |  | $ 5,000 | $ (500,000) | 479,420,000 | (483,762,000) |  |  |
Balance (in shares) at Mar. 31, 2024 |  | 1,952 | 4,522,656 |  |  |  |  |  |
Balance, Treasury (in shares) at Mar. 31, 2024 |  |  |  | (258,425) |  |  |  |  |
Stock-based compensation | 151,000 |  |  |  | 151,000 |  |  |  |
Issuance of common stock | 1,000 |  | $ 1,000 |  |  |  |  |  |
Issuance of common stock (in shares) |  |  | 1,439,988 |  |  |  |  |  |
Net loss | (2,940,000) |  |  |  |  | (2,940,000) |  |  |
Balance at Jun. 30, 2024 | (7,625,000) |  | $ 6,000 | $ (500,000) | 479,571,000 | (486,702,000) |  |  |
Balance (in shares) at Jun. 30, 2024 |  | 1,952 | 5,962,644 |  |  |  |  |  |
Balance, Treasury (in shares) at Jun. 30, 2024 |  |  |  | (258,425) |  |  |  |  |
Stock-based compensation | 125,000 |  |  |  | 125,000 |  |  |  |
Exercise of pre-funded warrants (in Shares) |  |  | 192,114 |  |  |  |  |  |
Reclassification of warrants to equity | 5,200,000 |  |  |  | 5,200,000 |  |  |  |
Net loss | (2,874,000) |  |  |  |  | (2,874,000) |  |  |
Balance at Sep. 30, 2024 | (5,174,000) |  | $ 6,000 | $ (500,000) | 484,896,000 | (489,576,000) |  |  |
Balance (in shares) at Sep. 30, 2024 |  | 1,952 | 6,154,758 |  |  |  |  |  |
Balance, Treasury (in shares) at Sep. 30, 2024 |  |  |  | (258,425) |  |  |  |  |
Balance at Dec. 31, 2024 | $ (8,949,000) |  | $ 6,000 | $ (500,000) | 485,024,000 | (493,479,000) |  |  |
Balance (in shares) at Dec. 31, 2024 |  | 1,952 | 6,154,758 |  |  |  |  |  |
Balance, Treasury (in shares) at Dec. 31, 2024 | 258,425 |  |  | (258,425) |  |  |  |  |
Stock-based compensation | $ 148,000 |  |  |  | 148,000 |  |  |  |
Exercise of pre-funded warrants |  |  | $ 7,000 |  | (7,000) |  |  |  |
Exercise of pre-funded warrants (in Shares) |  |  | 6,535,731 |  |  |  |  |  |
Exercise of Series B Warrants from May 2024 PIPE | 882,000 |  |  |  | 882,000 |  |  |  |
Exercise of Series B Warrants from May 2024 PIPE (in shares) |  |  | 497,824 |  |  |  |  |  |
Exchange of warrants for notes payable | (3,694,000) |  |  |  | (3,694,000) |  |  |  |
Issuance of common stock, pre-funded warrants and warrants for debt repayment | 5,373,000 |  | $ 4,000 |  | 5,369,000 |  |  |  |
Issuance of common stock, pre-funded warrants and warrants for debt repayment (in shares) |  |  | 4,069,738 |  |  |  |  |  |
Net loss | (17,401,000) |  |  |  |  | (17,401,000) |  |  |
Balance at Mar. 31, 2025 | (23,641,000) |  | $ 17,000 | $ (500,000) | 487,722,000 | (510,880,000) |  |  |
Balance (in shares) at Mar. 31, 2025 |  | 1,952 | 17,258,051 |  |  |  |  |  |
Balance, Treasury (in shares) at Mar. 31, 2025 |  |  |  | (258,425) |  |  |  |  |
Balance at Dec. 31, 2024 | $ (8,949,000) |  | $ 6,000 | $ (500,000) | 485,024,000 | (493,479,000) |  |  |
Balance (in shares) at Dec. 31, 2024 |  | 1,952 | 6,154,758 |  |  |  |  |  |
Balance, Treasury (in shares) at Dec. 31, 2024 | 258,425 |  |  | (258,425) |  |  |  |  |
Net loss | $ (16,673,000) |  |  |  |  |  |  |  |
Balance at Sep. 30, 2025 | $ 5,054,000 |  | $ 132,000 | $ (500,000) | 515,574,000 | (510,152,000) |  |  |
Balance (in shares) at Sep. 30, 2025 |  | 1,952 | 131,863,969 |  |  |  |  |  |
Balance, Treasury (in shares) at Sep. 30, 2025 | 258,425 |  |  | (258,425) |  |  |  |  |
Balance at Mar. 31, 2025 | $ (23,641,000) |  | $ 17,000 | $ (500,000) | 487,722,000 | (510,880,000) |  |  |
Balance (in shares) at Mar. 31, 2025 |  | 1,952 | 17,258,051 |  |  |  |  |  |
Balance, Treasury (in shares) at Mar. 31, 2025 |  |  |  | (258,425) |  |  |  |  |
Stock-based compensation | 152,000 |  |  |  | 152,000 |  |  |  |
Exercise or exchange of March 2025 Series A and B Warrants | 858,000 |  | $ 56,000 |  | 802,000 |  |  |  |
Exercise or exchange of March 2025 Series A and B Warrants (in Shares) |  |  | 56,277,032 |  |  |  |  |  |
Exercise of pre-funded warrants |  |  | $ 9,000 |  | (9,000) |  |  |  |
Exercise of pre-funded warrants (in Shares) |  |  | 9,016,349 |  |  |  |  |  |
Cancellation of common stock (in Shares) |  |  | (300,000) |  |  |  |  |  |
Issuance of common stock |  |  |  |  |  |  | $ 2,746,000 | $ 10,000 | $ 2,736,000
Issuance of common stock (in shares) |  |  |  |  |  |  |  | 10,187,000 |
Reclassification of warrants to equity | 10,967,000 |  |  |  | 10,967,000 |  |  |  |
Modification of warrants (Note 13) | 6,801,000 |  |  |  | 6,801,000 |  |  |  |
Net loss | 5,151,000 |  |  |  |  | 5,151,000 |  |  |
Balance at Jun. 30, 2025 | 3,034,000 |  | $ 92,000 | $ (500,000) | 509,171,000 | (505,729,000) |  |  |
Balance (in shares) at Jun. 30, 2025 |  | 1,952 | 92,438,432 |  |  |  |  |  |
Balance, Treasury (in shares) at Jun. 30, 2025 |  |  |  | (258,425) |  |  |  |  |
Stock-based compensation | 527,000 |  |  |  | 527,000 |  |  |  |
Exercise of March 2025 Series B Warrants (in Shares) |  |  | 741,840 |  |  |  |  |  |
Exercise of pre-funded warrants |  |  | $ 8,000 |  | (8,000) |  |  |  |
Exercise of pre-funded warrants (in Shares) |  |  | 7,767,941 |  |  |  |  |  |
Cancelled common stock |  |  | $ (3,000) |  | 3,000 |  |  |  |
Cancellation of common stock (in Shares) |  |  | (3,472,740) |  |  |  |  |  |
Issuance of common stock | 16,850,000 |  | $ 35,000 |  | 16,815,000 |  |  |  |
Issuance of common stock (in shares) |  |  | 34,388,496 |  |  |  |  |  |
Investor fees pursuant to Support Letters (Note 13) | (2,250,000) |  |  |  | (2,250,000) |  |  |  |
Liability to investors pursuant to Letter Agreement (Note 13) | (8,684,000) |  |  |  | (8,684,000) |  |  |  |
Net loss | (4,423,000) |  |  |  |  | (4,423,000) |  |  |
Balance at Sep. 30, 2025 | $ 5,054,000 |  | $ 132,000 | $ (500,000) | $ 515,574,000 | $ (510,152,000) |  |  |
Balance (in shares) at Sep. 30, 2025 |  | 1,952 | 131,863,969 |  |  |  |  |  |
Balance, Treasury (in shares) at Sep. 30, 2025 | 258,425 |  |  | (258,425) |  |  |  |  |

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