SEACOR Marine (SMHI) CEO logs tax-withholding move and updates share holdings

Rhea-AI Filing Summary

SEACOR Marine Holdings Inc.'s President and CEO John M. Gellert reported a tax-related share disposition. On March 4, 2026, 65,932 shares of common stock were withheld at $7.63 per share to cover tax obligations, using transaction code F.

After this tax-withholding disposition, Gellert directly owned 1,047,653 common shares. He also had indirect ownership stakes, including 109,109 shares through JMG Assets, LLC and 95,158 shares through JMG GST LLC, where he serves as manager.

Additional indirect interests included 26,557 shares held by the Michael E. Gellert 2011 Family Trust, in which he is a co-investment director and beneficiary, and 17,180 shares through MCG Assets, LLC, where he is a manager and may direct voting and disposition, subject to his pecuniary interest.

Insider Trade Summary

Net Seller: 65,932 shares

Net Sell 5 txns

Insider Gellert John M

Role President and CEO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	65,932	$7.63	$503K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,047,653 shares (Direct); Common Stock — 109,109 shares (Indirect, JMG Assets, LLC); Common Stock — 95,158 shares (Indirect, JMG GST LLC); Common Stock — 26,557 shares (Indirect, Michael E. Gellert 2011 Family Trust); Common Stock — 17,180 shares (Indirect, MCG Assets, LLC)

Footnotes (4)

1. F1. 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
2. F2. 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.
3. F3. 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.
4. F4. 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.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 03/05/2026 - 05:14 PM Learn about SEC filing dates

FAQ

What insider transaction did SMHI CEO John M. Gellert report?

John M. Gellert reported a tax-withholding disposition of SEACOR Marine common stock. On March 4, 2026, 65,932 shares were withheld at $7.63 per share to satisfy tax obligations, rather than sold in an open-market transaction.

How many SEACOR Marine (SMHI) shares does John M. Gellert own directly after this Form 4?

After the reported tax-withholding disposition, John M. Gellert directly owned 1,047,653 shares of SEACOR Marine common stock. This figure reflects his remaining direct holdings following the delivery of 65,932 shares to cover tax liabilities.

What indirect SEACOR Marine (SMHI) holdings are associated with John M. Gellert?

Indirectly, Gellert is associated with 109,109 shares via JMG Assets, LLC and 95,158 shares via JMG GST LLC, where he is manager. He also has interests in 26,557 shares through the Michael E. Gellert 2011 Family Trust and 17,180 shares via MCG Assets, LLC.

Was the SMHI Form 4 transaction an open-market sale by the CEO?

The Form 4 shows a tax-withholding disposition, not an open-market sale. Transaction code F indicates 65,932 shares were delivered to cover tax liabilities, using existing shares rather than selling stock on the open market.

What does transaction code F mean in the SMHI Form 4 filing?

Transaction code F represents “payment of exercise price or tax liability by delivering securities.” In this case, 65,932 SEACOR Marine shares were used to satisfy tax obligations, classed as a tax-withholding disposition rather than a typical buy or sell transaction.

How are SMHI shares held through trusts and LLCs attributed to John M. Gellert?

The filing states shares are held through entities like JMG Assets, LLC, JMG GST LLC, a family trust, and MCG Assets, LLC. Gellert serves as manager or co-investment director and may have voting or pecuniary interests, with some beneficial ownership disclaimed except for his economic interest.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Gellert John M

(Last) (First) (Middle)

C/O SEACOR MARINE HOLDINGS INC.

12121 WICKCHESTER LANE, SUITE 500

(Street)

HOUSTON TX 77079

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SEACOR Marine Holdings Inc. [ SMHI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/04/2026		F		65,932	D	$7.63	1,047,653	D
Common Stock								109,109	I	JMG Assets, LLC(1)
Common Stock								95,158	I	JMG GST LLC(2)
Common Stock								26,557	I	Michael E. Gellert 2011 Family Trust(3)
Common Stock								17,180	I	MCG Assets, LLC(4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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

2. 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.

3. 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.

4. 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	03/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.