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Note 15 - Subsequent Events | 9 Months Ended
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Sep. 30, 2025
Notes to Financial Statements |
Subsequent Events [Text Block] | 15. Subsequent Events On October 15, 2025, Aemetis Biogas LLC ("ABGL") entered into an agreement entitled Tenth Waiver and Amendment to Series A Preferred Unit Purchase Agreement ("PUPA Tenth Amendment") with an effective date of August 31, 2025, that provides, among other provisions, the requirement for ABGL to redeem all outstanding Series A Preferred Units by December 31, 2025, for an aggregate redemption price of $118.8 million or to enter into a credit agreement in the form attached to the PUPA Tenth Amendment. The PUPA Tenth Amendment is described further in Note 11 Aemetis Biogas LLC - Series A Preferred Financing.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/855/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483399/855-10-50-2 + Details
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