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Note 10 - Warrants to Purchase Common Stock | 9 Months Ended
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Sep. 30, 2025
Notes to Financial Statements |
Outstanding Warrants [Text Block] | 10. Warrants to Purchase Common Stock On June 30, 2025, the maturity dates on two accredited investor's Subordinated Notes were extended to December 31, 2025. In connection with the extension, we issued the noteholders warrants exercisable for the purchase of 113 thousand shares of Aemetis, Inc. common stock with a term of two years and an exercise price of $0.01 per share. The warrants were fully exercised in July 2025. The following table summarizes warrant activity during the nine months ending September 30, 2025:
|  | Warrants Outstanding & Exercisable |  |  | Weighted - Average Exercise Price |  |  | Average Remaining Term in Years |
Outstanding December 31, 2024 |  |  | 530 |  |  | $ | 11.70 |  |  |  | 4.78 |
Granted |  |  | 226 |  |  |  | 0.01 |  |  |  |  |
Exercised |  |  | (226 | ) |  |  | 0.01 |  |  |  |  |
Outstanding September 30, 2025 |  |  | 530 |  |  | $ | 11.70 |  |  |  | 4.03 |
All of the above outstanding warrants are fully vested and exercisable as of September 30, 2025. The fair value calculations for issued warrants are based on the following weighted average factors:
|  | For the nine months ended September 30, |
Description |  | 2025 |  |  | 2024 |
Dividend-yield |  |  | - | % |  |  | - | %
Risk-free interest rate |  |  | 3.99 | % |  |  | 4.50 | %
Expected volatility |  |  | 90.48 | % |  |  | 99.85 | %
Expected life (years) |  |  | 2.00 |  |  |  | 2.00 |
Exercise price per share |  | $ | 0.01 |  |  | $ | 0.01 |
Market value per share on grant date |  | $ | 2.59 |  |  | $ | 4.05 |
Fair value per share on grant date |  | $ | 2.58 |  |  | $ | 4.04 |

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