SMHI · SEACOR Marine Holdings Inc.

The reported sale of 401 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The stock options vested in three equal installments on March 4, 2021, March 4, 2022 and March 4, 2023.

The reported exercise of 200 stock options occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The reported sale of 200 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

The reported exercise of 200 stock options occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.77 to $9.94, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 3,207 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.75 to $9.86, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 5,927 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The reported sale of 1,503 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.75 to $9.78, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 the footnote to this Form 4.

The reported sale of 2,840 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.75 to $9.855, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 13,054 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The reported sale of 205 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.50 to $9.63, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 1,018 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.50 to $9.57, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 5,113 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.50 to $9.55, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 1,637 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.51 to $9.49, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 45,892 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.56 to $9.54, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 60,823 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.52 to $9.10, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 12,741 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.50 to $9.60, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 17,232 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.50 to $9.60, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 15,000 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2026.

The reported sale of 4,108 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

The reported sale of 3,223 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.27 to $8.51, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 13,914 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.25 to $8.40, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 7,816 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.00 to $8.04, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 1,386 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.00 to $8.09, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 1,649 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.00 to $8.16, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 14,461 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.00 to $8.16, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 10,565 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.75 to $8.17, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 11,963 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.00 to $8.17, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 9,435 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.50 to $7.95, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or 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 to this Form 4.

The reported sale of 14,432 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.06 to $7.22, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

The reported sale of 9,601 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.215 to $7.49, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

The reported sale of 9,670 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2026.

The restricted stock award reported in this Form 4 will lapse on the earlier of (i) the date of the 2027 annual meeting of stockholders of the Issuer, provided that such date is not less than 50 weeks from the grant date of such award, and (ii) June 2, 2027.

The restricted stock award reported in this Form 4 will lapse on the earlier of (i) the date of the 2027 annual meeting of stockholders of the Issuer, provided that such date is not less than 50 weeks from the grant date of such award, and (ii) June 2, 2027.

The restricted stock award reported in this Form 4 will lapse on the earlier of (i) the date of the 2027 annual meeting of stockholders of the Issuer, provided that such date is not less than 50 weeks from the grant date of such award, and (ii) June 2, 2027.

The restricted stock award reported in this Form 4 will lapse on the earlier of (i) the date of the 2027 annual meeting of stockholders of the Issuer, provided that such date is not less than 50 weeks from the grant date of such award, and (ii) June 2, 2027.

The restricted stock award reported in this Form 4 will lapse on the earlier of (i) the date of the 2027 annual meeting of stockholders of the Issuer, provided that such date is not less than 50 weeks from the grant date of such award, and (ii) June 2, 2027.

Performance restricted stock units ("PRSUs") convert into shares of Common Stock on a one-for-one basis.

On 3/7/23, the Reporting Person was granted 38,515 PRSUs ("2023 PRSUs") consisting of five equal tranches, each of which would be earned if and when the closing price of one share of Common Stock equals or exceeds the specified stock price performance goal for such tranche for 60 consecutive trading days during the three year performance period beginning on the grant date, provided that any earned PRSUs would not be settled until the third anniversary of the grant date, subject to satisfaction of the service-based vesting requirements set forth in the award agreement. The specified stock price performance goals for each tranche were $11.61, $13.21, $14.91, $16.62 and $18.22, respectively. The service-based vesting requirements and one of the specified stock price performance goals were satisfied during the performance period ending 3/7/26, and the shares of Common Stock were issued at such date with respect to one tranche of the 2023 PRSUs. The remaining 2023 PRSUs were forfeited.

Performance restricted stock units ("PRSUs") convert into shares of Common Stock on a one-for-one basis.

On 3/7/23, the Reporting Person was granted 18,595 PRSUs ("2023 PRSUs") consisting of five equal tranches, each of which would be earned if and when the closing price of one share of Common Stock equals or exceeds the specified stock price performance goal for such tranche for 60 consecutive trading days during the three year performance period beginning on the grant date, provided that any earned PRSUs would not be settled until the third anniversary of the grant date, subject to satisfaction of the service-based vesting requirements set forth in the award agreement. The specified stock price performance goals for each tranche were $11.61, $13.21, $14.91, $16.62 and $18.22, respectively. The service-based vesting requirements and one of the specified stock price performance goals were satisfied during the performance period ending 3/7/26, and the shares of Common Stock were issued at such date with respect to one tranche of the 2023 PRSUs. The remaining 2023 PRSUs were forfeited.

Performance restricted stock units ("PRSUs") convert into shares of Common Stock on a one-for-one basis.

Performance restricted stock units ("PRSUs") convert into shares of Common Stock on a one-for-one basis.

On 3/7/23, the Reporting Person was granted 19,920 PRSUs ("2023 PRSUs") consisting of five equal tranches, each of which would be earned if and when the closing price of one share of Common Stock equals or exceeds the specified stock price performance goal for such tranche for 60 consecutive trading days during the three year performance period beginning on the grant date, provided that any earned PRSUs would not be settled until the third anniversary of the grant date, subject to satisfaction of the service-based vesting requirements set forth in the award agreement. The specified stock price performance goals for each tranche were $11.61, $13.21, $14.91, $16.62 and $18.22, respectively. The service-based vesting requirements and one of the specified stock price performance goals were satisfied during the performance period ending 3/7/26, and the shares of Common Stock were issued at such date with respect to one tranche of the 2023 PRSUs. The remaining 2023 PRSUs were forfeited.

Performance restricted stock units ("PRSUs") convert into shares of Common Stock on a one-for-one basis.

Performance restricted stock units ("PRSUs") convert into shares of Common Stock on a one-for-one basis.

Performance restricted stock units ("PRSUs") convert into shares of Common Stock on a one-for-one basis.

Performance restricted stock units ("PRSUs") convert into shares of Common Stock on a one-for-one basis.

On 3/7/23, the Reporting Person was granted 47,810 PRSUs ("2023 PRSUs") consisting of five equal tranches, each of which would be earned if and when the closing price of one share of Common Stock equals or exceeds the specified stock price performance goal for such tranche for 60 consecutive trading days during the three year performance period beginning on the grant date, provided that any earned PRSUs would not be settled until the third anniversary of the grant date, subject to satisfaction of the service-based vesting requirements set forth in the award agreement. The specified stock price performance goals for each tranche were $11.61, $13.21, $14.91, $16.62 and $18.22, respectively. The service-based vesting requirements and one of the specified stock price performance goals were satisfied during the performance period ending 3/7/26, and the shares of Common Stock were issued at such date with respect to one tranche of the 2023 PRSUs. The remaining 2023 PRSUs were forfeited.