GEVO · Gevo, Inc.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 22, 2025

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.70 to $1.71 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.

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.

Represents shares sold by the Reporting Person to cover withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on November 20, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.70 to $1.71 per share, exclusive. 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.

Represents restricted common stock that vests on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of the vesting date.

The stock options became exercisable in three equal annual installments beginning on June 9, 2026.

The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.51 to $1.57 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.

The reported sales 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 $1.41 to $1.57 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.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 22, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.51 to $1.57 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.

Represents shares sold by the Reporting Person to cover withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on November 20, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.51 to $1.57 per share, exclusive. 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.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.390 to $1.475 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.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales 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 $1.390 to $1.475 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.

The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.370 to $1.475 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.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 22, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.390 to $1.475 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.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on November 20, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.390 to $1.475 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.

The reported sales 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 $1.370 to $1.475 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.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales 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 $1.390 to $1.475 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.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales 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 $1.74 to $1.80 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.

Represents restricted common stock that vests on the earlier to occur of (i) the next annual meeting of stockholders or (ii) the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of the vesting date.

Represents restricted common stock that vests on the earlier to occur of (i) the next annual meeting of stockholders or (ii) the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of the vesting date.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on November 20, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.74 to $1.80 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.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 22, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.74 to $1.80 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.

Represents restricted common stock that vests on the earlier to occur of (i) the next annual meeting of stockholders or (ii) the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of the vesting date.

Represents restricted common stock that vests on the earlier to occur of (i) the next annual meeting of stockholders or (ii) the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of the vesting date.

Represents stock options that vest on the earlier to occur of (i) the next annual meeting of stockholders or (ii) the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of the vesting date.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales 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 $1.74 to $1.80 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.

Represents restricted common stock that vests on the earlier to occur of (i) the next annual meeting of stockholders or (ii) the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of the vesting date.

Represents restricted common stock that vests on the earlier to occur of (i) the next annual meeting of stockholders or (ii) the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of the vesting date.

The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.74 to $1.80 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.

Represents shares sold by the Reporting Person to cover tax withholding obligations upon vesting of a restricted stock award. The reported sales 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 $1.74 to $1.80 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.

Represents restricted common stock that vests in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

The stock options shall vest in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

The stock options shall vest in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

Represents restricted common stock that vests in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

The stock options shall vest in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

The stock options shall vest in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

Represents restricted common stock that vests in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

The stock options shall vest in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

The stock options shall vest in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

Represents restricted common stock that vests in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

The stock options shall vest in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

The stock options shall vest in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

Represents restricted common stock that vests in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

Represents restricted common stock that vests in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

Represents restricted common stock that vests in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

Represents restricted common stock that vests in three equal annual installments beginning on the first anniversary of the grant date, provided that the reporting person remains in continuous service with the issuer as of each vesting date.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.000 to $2.005 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.

The option became exercisable in three equal annual installments beginning on May 22, 2025.