X0508 4 2026-03-10 0001392380 Gevo, Inc. GEVO 0001999254 Shafer Andrew C/O GEVO, INC. 345 INVERNESS DRIVE SOUTH BUILDING C, SUITE 310 ENGLEWOOD CO 80112 false true false false Chief Cust Mkt & Brnd Officer 1 Common Stock 2026-03-10 4 M 0 5550 0.71 A 276373 D Common Stock 2026-03-10 4 S 0 5550 2.2063 D 270823 D Common Stock 16877.69 I By 401(k) Plan Stock Option 0.71 2026-03-10 4 M 0 5550 0 A 2034-05-21 Common Stock 5550 196950 D The reported transactions were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on November 19, 2025. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.185 to $2.23 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Between January 25, 2026 and March 10, 2026, the reporting person (i) acquired 7,096.69 shares of the issuer's common stock under the issuer's 401(k) plan; and (ii) disposed of 7.14 shares of the issuer's common stock under the issuer's 401(k) plan to cover administrative fees. The information in this report is based on a plan statement dated February 27, 2026. The option became exercisable in three equal annual installments beginning on May 22, 2025. /s/ E. Cabell Massey, Attorney-in-Fact 2026-03-12