COO — Greg Hanselman: The filing discloses the internal promotion of an existing executive (EVP) to the role of Chief Operating Officer, which is a succession event rather than a departure.

Results of Operations and Financial Condition. On August 6, 2026, Gevo, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the quarter ended June 30, 2026. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this

Class II Director — Todd Werpy: Appointment of Todd Werpy as a Class II director.

Results of Operations and Financial Condition. On May 7, 2026, Gevo, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the three months ended March 31, 2026. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this

CEO — Patrick R. Gruber: Dr. Gruber retired as CEO and entered into a consulting agreement with the company.

Director — Angelo Amorelli: Dr. Amorelli will not stand for re-election to the Board due to personal reasons.

Results of Operations and Financial Condition. On March 5, 2026, Gevo, Inc. (the “Company”) issued a press release announcing the Company’s financial results for year ended December 31, 2025. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this

Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement of a Registrant. The information set forth in

Termination of a Material Definitive Agreement. On the Effective Date, the Company caused the redemption in full of certain bonds originally issued for the benefit of RNG Project Company, including (i) $40,000,000 aggregate principal amount of the Iowa Finance Authority Solid Waste Facility Refunding Revenue Bonds (Gevo NW Iowa RNG, LLC Renewable Natural Gas Project), Series 2025A (the “ Series 2025A Bonds ”) and (ii) the remaining $28,155,000 aggregate principal amount of the Iowa Finance Au…

Entry into a Material Definitive Agreement. On February 6, 2026 (the “ Effective Date ”), Gevo, Inc. (the “ Company ”), through direct and indirect subsidiaries, completed a refinance transaction with entities affiliated with Orion Infrastructure Capital. The refinance transaction included entering into an Amendment (as defined below) to the Existing Credit Agreement (as defined below), which permitted and financed the redemption of the Bonds (as defined below) issued for the benefit of the R…

President and Chief Operating Officer — Christopher M. Ryan: Dr. Christopher M. Ryan is retiring as President and Chief Operating Officer, with Greg Hanselman set to succeed him.

CEO — Patrick R. Gruber: Dr. Patrick R. Gruber is retiring as CEO with a successor named.

Results of Operations and Financial Condition. On November 10, 2025, Gevo, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the quarter ended September 30, 2025. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this

Entry into a Material Definitive Agreement. Tax Credit Transfer Agreement with Stifel Financial Corp. On October 30, 2025 (the “Stifel Agreement Effective Date”), Gevo Intermediate HoldCo, LLC (“Transferor”), a subsidiary of Gevo, Inc., entered into a Tax Credit Transfer Agreement (the “Stifel Agreement”) with Stifel Financial Corp. (“Stifel Transferee” and, together with Transferor, the “Parties” and, each, a “Party”), pursuant to which Transferor agreed to supply “Clean Fuel Production Cred…

Entry into a Material Definitive Agreement. On September 18, 2025, Net-Zero Richardton, LLC (“Gevo”), a subsidiary of Gevo, Inc., entered into a Carbon Dioxide Removal Sales Agreement (the “Agreement”) with Biorecro North America, LLC (“Biorecro” and, together with Gevo, the “Parties” and, each, a “Party”), pursuant to which Gevo agreed to sell approximately $26 million worth of carbon dioxide removal credits (“CDR credits”) associated with its carbon capture and sequestration facilities in R…

Results of Operations and Financial Condition. On August 11, 2025, Gevo, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the quarter ended June 30, 2025. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this

Entry into a Material Definitive Agreement. The Iowa Finance Authority (the “Issuer”) previously issued its currently outstanding Iowa Finance Authority Solid Waste Facility Revenue Bonds (Gevo NW Iowa RNG, LLC Renewable Natural Gas Project), Series 2021 (Green Bonds) (the “Existing Bonds”) in the aggregate principal amount of $68,155,000. The Existing Bonds were initially issued on April 15, 2021 in a public offering for the benefit of Gevo NW Iowa RNG, LLC (the “Company”), a subsidiary of G…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information contained in

Entry into a Material Definitive Agreement. On June 30, 2025 (the “Effective Date”), Gevo Intermediate HoldCo, LLC (“Transferor”), a subsidiary of Gevo, Inc., entered into a Tax Credit Transfer Agreement (the “Agreement”) with a transferee bank (“Transferee” and, together with Transferor, the “Parties” and, each, a “Party”), pursuant to which Transferor agreed to supply “Clean Fuel Production Credits” to Transferee from the production of ethanol between January 31, 2025 and December 31, 2025…

Chief Financial Officer — Oluwagbemileke (Leke) Agiri: Mr. Agiri was promoted to Chief Financial Officer from his previous role as Executive Vice President, Finance.

Results of Operations and Financial Condition. On May 13, 2025, Gevo, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the quarter ended March 31, 2025. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this

Entry into a Material Definitive Agreement. On April 7, 2025, Gevo Net-Zero 1, LLC (“Gevo”), a subsidiary of Gevo, Inc., entered into a SAF Scope 1 and Scope 3 Credit Supply Agreement (the “Agreement”) with Future Energy Capital Limited (T/A Future Energy Global) (“Future Energy” and, together with Gevo, the “Parties” and, each, a “Party”), pursuant to which Gevo agreed to supply the Scope 1 Credits and Scope 3 credits associated with ten million gallons per year of sustainable aviation fuel…

Results of Operations and Financial Condition. On March 27, 2025, Gevo, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the quarter and full year ended December 31, 2024. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this

Vice President Accounting and Treasurer (principal accounting officer) — Alisher Nurmat: Mr. Nurmat is retiring and a successor has been appointed.

Results of Operations and Financial Condition. On November 7, 2024, Gevo, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the quarter ended September 30, 2024. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this