X0306 4 2019-10-28 0 0001690334 SEACOR Marine Holdings Inc. SMHI 0001777507 Miguel Bejos Alfredo C/O SEACOR MARINE HOLDINGS INC. 12121 WICKCHESTER LANE, SUITE 500 HOUSTON TX 77079 1 0 0 0 Common Stock 2019-10-28 4 S 0 4401 13.8447 D 173695 D Common Stock 2019-10-29 4 S 0 5081 13.7736 D 168614 D Common Stock 2019-10-30 4 S 0 4718 13.3436 D 163896 D Common Stock 778431 I Proyectos Globales de Energia y Servicios CME, S.A. de C.V. This trade occurred pursuant to a Rule 10b5-1 trading plan established by the Reporting Person on September 12, 2019. The price reported to Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.69 to $13.99, 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 2, footnote 3 and footnote 4 to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.64 to $13.91, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.12 to $13.81, inclusive. The Reporting Person is the President, Chief Executive Officer and a shareholder of Proyectos Globales de Energia y Servicios CME, S.A. de C.V. The Reporting Person disclaims beneficial ownership except to the extent of his pecuniary interest in the securities. /s/ Andrew H. Everett II, Attorney-in-Fact 2019-10-30