X0508 4 2026-03-04 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 2026-03-04 4 F false 65932 7.63 D 1047653 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 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. /s/ Andrew H. Everett II, Attorney-in-Fact 2026-03-05