X0306 4 2022-03-11 0 0001690334 SEACOR Marine Holdings Inc. SMHI 0001292966 Gellert John M C/O SEACOR MARINE HOLDINGS INC. 12121 WICKCHESTER LANE, SUITE 500 HOUSTON TX 77079 1 1 0 0 President and CEO Common Stock 2022-03-11 4 F 0 13786 5.88 D 458508 D Common Stock 2022-03-11 4 A 0 212049 0.00 A 670557 D Common Stock 109109 I JMG Assets, LLC Common Stock 95158 I JMG GST LLC Common Stock 38803 I Grantor Retained Annuity Trust Common Stock 26557 I Michael E. Gellert 2011 Family Trust Performance Restricted Stock Units 2022-03-11 4 A 0 58905 0.00 A Common Stock 58905 58905 D The restricted stock award reported on this Form 4 will lapse in three equal annual installments beginning on March 4, 2023 and ending on March 4, 2025. 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. Reporting Person disclaims beneficial ownership except to the extent of his pecuniary interest. 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 $5.02, $5.72, $6.45, $7.19 and $7.88, respectively. /s/ Andrew H. Everett II, Attorney-in-Fact 2022-03-15