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Note 10 - Stock-Based Compensation - Share-Based Compensation Arrangement by Share-Based Payment Award, Options Vested and Expected to Vest, Outstanding, and Exercisable (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Vested and Exercisable, number of shares (in shares) 5,245 3,986
Vested and Exercisable, weighted average exercise price (in dollars per share) $ 4.17 $ 3.58
Vested and Exercisable, remaining contractual term (Year) 6 years 29 days 6 years 5 months 19 days
Vested and Exercisable, aggregate intrinsic value [1] $ 4,021 $ 11,695
Unvested, number of share (in shares) 1,955 1,540
Unvested, weighted average exercise price (in dollars per share) $ 3.8 $ 6.55
Unvested, remaining contractual term (Year) 8 years 8 months 4 days 8 years 8 months 1 day
Unvested, aggregate intrinsic value [1] $ 47 $ 1,621
Number of shares (in shares) 7,201 5,526
Weighted average exercise price (in dollars per share) $ 4.06 $ 4.42
Remaining contractual term (Year) 7 years 6 months 18 days 7 years 14 days
Aggregate intrinsic value [1] $ 4,068 $ 13,316
[1] Intrinsic value based on the $2.69 and $5.24 closing price of Aemetis, Inc. common stock on December 31, 2024 and 2023 respectively, as reported on the NASDAQ Exchange.