X0508 4 2026-02-27 0001690334 SEACOR Marine Holdings Inc. SMHI 0001292966 Gellert John M C/O SEACOR MARINE HOLDINGS INC. 12121 WICKCHESTER LANE, SUITE 500 HOUSTON TX 77079 true true false false President and CEO false Common Stock 2026-02-27 4 A false 87965 0 A 1113585 D Common Stock 109109 I JMG Assets, LLC Common Stock 95158 I JMG GST LLC Common Stock 26557 I Michael E. Gellert 2011 Family Trust Common Stock 17180 I MCG Assets, LLC Performance Restricted Stock Units 2026-02-27 4 A false 42220 0 A Common Stock 42220 42220 D The restricted stock award reported on this Form 4 will lapse in five equal annual installments beginning on March 4, 2027 and ending on March 4, 2031. The shares reported here are indirectly owned by the Reporting Person through JMG Assets, LLC. The Reporting Person is the manager of JMG Assets, LLC The shares reported here are indirectly owned by the Reporting Person through JMG GST LLC. The Reporting Person is the manager of JMG GST LLC. The Reporting Person is a co-investment director and beneficiary of the Michael E. Gellert 2011 Family Trust, and of which he disclaims beneficial ownership except to the extent of his pecuniary interest in the shares. The Reporting Person serves as a manager of MCG Assets, LLC and, as such, has the power to direct the voting and disposition of the reported shares. The Reporting Person disclaims beneficial ownership except to the extent of his pecuniary interest in the shares. Each Performance Restricted Stock Unit (each, a "PRSU") represents a contingent right to receive, at vesting, one share of Common Stock subject to the achievement of certain performance goals and service-based vesting requirements. These PRSUs consist of five equal tranches, each of which will 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 will 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 are $7.67, $8.52, $9.38, $10.23 and $11.08, respectively. /s/ Andrew H. Everett II, Attorney-in-Fact 2026-03-02