| Schedule of financial assets and liabilities measured at fair value on a recurring basis |
| | | | | | | | | | Fair value measurement at reporting date using | June 30, 2026 | (Level 1) | | (Level 2) | | (Level 3) | Assets: | | | | | | | | | Cash and cash equivalents - money market funds | $ | 3,905,000 | | $ | - | | $ | - | Liabilities: | | | | | | | | | Warrant liabilities - Series A Warrants | $ | - | | $ | - | | $ | 44,000 | | | | | | | | | | December 31, 2025 | | | | | | | | | Assets: | | | | | | | | | Cash and cash equivalents - money market funds | $ | 2,927,000 | | $ | - | | $ | - | Liabilities: | | | | | | | | | Warrant liabilities - Series A Warrants | $ | - | | $ | - | | $ | 100,000 |
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| Schedule of warrant liability activity |
| | | Balance, December 31, 2025 | $ | 100,000 | Change in fair value of Series A Warrants | | 159,000 | Balance, March 31, 2026 | | 259,000 | Change in fair value of Series A Warrants | | (215,000) | Balance, June 30, 2026 | $ | 44,000 |
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| Schedule of the components of basic and diluted net (loss) income per share |
| | | | | | | | | | | | | Three Months Ended June 30, | | Six Months Ended June 30, | | 2026 | | 2025 | | 2026 | | 2025 | Numerator: | | | | | | | | | | | | Net (loss) income | $ | (3,054,000) | | $ | (915,000) | | $ | (10,161,000) | | $ | 20,575,000 | | | | | | | | | | | | | Net (loss) income attributable to common stockholders | $ | (2,611,000) | | $ | (625,000) | | $ | (8,446,000) | | $ | 14,860,000 | Net (loss) income attributable to Series C Preferred stockholders | $ | (443,000) | | $ | (290,000) | | $ | (1,715,000) | | $ | 5,715,000 | | | | | | | | | | | | | Denominator: | | | | | | | | | | | | Weighted-average shares of common stock outstanding, basic | | 15,864,041 | | | 5,820,903 | | | 13,266,763 | | | 7,359,825 | Restricted stock units | | - | | | - | | | - | | | 2,825 | Stock options | | - | | | - | | | - | | | 251,675 | Weighted-average shares of common stock outstanding, diluted | | 15,864,041 | | | 5,820,903 | | | 13,266,763 | | | 7,614,325 | | | | | | | | | | | | | Net (loss) income per share of common stock, basic | $ | (0.16) | | $ | (0.11) | | $ | (0.64) | | $ | 2.02 | Net (loss) income per share of common stock, diluted | $ | (0.16) | | $ | (0.11) | | $ | (0.64) | | $ | 1.95 | | | | | | | | | | | | | Weighted-average shares of Series C Preferred outstanding, basic and diluted | | 6,737 | | | 6,759 | | | 6,737 | | | 7,077 | Net (loss) income per share of Series C Preferred, basic and diluted | $ | (65.76) | | $ | (42.91) | | $ | (254.56) | | $ | 807.55 |
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| Schedule of antidilutive securities which have been excluded from the computation of diluted weighted average shares outstanding |
| | | | | | | June 30, | | | 2026 | | 2025 | Warrants | | 33,833,844 | | 3,919,589 | Stock Options | | 2,037,911 | | 299,784 | Unvested restricted stock units | | 146,450 | | 22,690 | Series C Preferred (assumed conversion to common stock) | | 2,694,900 | | 2,694,900 | | | 38,713,105 | | 6,936,963 |
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