X0609 4 2026-09-03 0 0001392380 Gevo, Inc. GEVO 0001511369 Gruber Patrick R. false GEVO, INC., 345 INVERNESS DRIVE SOUTH BUILDING C, SUITE 310 ENGLEWOOD CO 80112 1 0 0 0 1 Common Stock 2026-09-03 4 S 0 3333 1.7016 D 3320455 D Common Stock 25728.66 I By 401(k) Plan The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on March 10, 2026. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.695 to $1.710 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 August 6, 2026 and September 3, 2026, the reporting person disposed of 9.04 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 August 25, 2026. /s/ E. Cabell Massey, Attorney-in-Fact 2026-09-04