John M. Gellert - 07 Mar 2026 Form 4 Insider Report for SEACOR Marine Holdings Inc. (SMHI)

Reporting relationship: President and CEO, Director
Issuer ticker: SMHI
Reported as of: 07 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 10 Mar 2026, 17:45:43 UTC
Prior SEC filing: 05 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Andrew H. Everett II, Attorney-in-Fact

Key filing fact

John M. Gellert filed Form 4 for SEACOR Marine Holdings Inc. (SMHI) on 10 Mar 2026.

Key facts

This page summarizes John M. Gellert's Form 4 filing for SEACOR Marine Holdings Inc. (SMHI).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 10 Mar 2026, 17:45.

Change

Previous filing in this sequence was filed on 05 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001292966 Primary reporting owner

Gellert John M

Relationship: President and CEO, Director
Address: C/O SEACOR MARINE HOLDINGS INC., 12121 WICKCHESTER LANE, SUITE 500, HOUSTON
Signature: /s/ Andrew H. Everett II, Attorney-in-Fact
Signature date: 10 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SMHI transaction

Common Stock

Options Exercise

Transaction value
Shares: +9,562
Change %: +0.91%
Price
Shares after: 1,057,215
Date: 07 Mar 2026
Ownership: Direct
Footnotes: F1

SMHI transaction

Common Stock

Tax liability

Transaction value
Shares: -4,193
Change %: -0.4%
Price: $7.31^*
Shares after: 1,053,022
Date: 07 Mar 2026
Ownership: Direct

SMHI holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 109,109
Date: 07 Mar 2026
Ownership: JMG Assets, LLC
Footnotes: F2

SMHI holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 95,158
Date: 07 Mar 2026
Ownership: JMG GST LLC
Footnotes: F3

SMHI holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 26,557
Date: 07 Mar 2026
Ownership: Michael E. Gellert 2011 Family Trust
Footnotes: F4

SMHI holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 17,180
Date: 07 Mar 2026
Ownership: MCG Assets, LLC
Footnotes: F5

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SMHI transaction Derivative

Performance Restricted Stock Units

Options Exercise

Transaction value
Shares: -9,562
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 07 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9,562
Exercise price
Footnotes: F1, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

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

Footnote F2

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.

Footnote F3

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.

Footnote F4

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.

Footnote F5

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.

Footnote F6

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.