SEACOR Marine (SMHI) SVP & CAO uses 24,933 shares for tax withholding

Rhea-AI Filing Summary

SEACOR Marine Holdings Inc. senior vice president and chief accounting officer Gregory Scott Rossmiller reported a tax-related share disposition. On this Form 4, he delivered 24,933 shares of common stock at a price of $7.63 per share to cover tax withholding obligations, rather than selling shares in an open-market transaction. After this tax-withholding disposition, he continued to hold 292,486 shares of SEACOR Marine common stock directly.

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

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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^*

Rossmiller Gregory Scott

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & CAO

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		24,933	D	$7.63	292,486	D

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:

	/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.

FAQ

What insider transaction did SMHI executive Gregory Scott Rossmiller report?

Gregory Scott Rossmiller reported a tax-related share disposition. He delivered 24,933 shares of SEACOR Marine common stock to satisfy tax withholding obligations, rather than executing an open-market sale, and continued to directly own a substantial remaining stake afterward.

Was the SMHI insider transaction a market sale of shares?

No, the transaction was not an open-market sale. It was coded “F,” indicating shares were withheld or delivered to pay tax liabilities, meaning the shares were used to satisfy taxes owed rather than sold to outside investors.

How many SEACOR Marine (SMHI) shares were used for tax withholding?

Rossmiller used 24,933 shares of SEACOR Marine common stock for tax withholding. These shares were valued at $7.63 per share for this purpose, reflecting a standard mechanism to cover tax obligations on equity-based compensation.

How many SMHI shares does Gregory Scott Rossmiller own after the transaction?

After the tax-withholding disposition, Rossmiller directly owned 292,486 shares of SEACOR Marine common stock. This figure reflects his remaining direct holdings following the delivery of 24,933 shares to cover associated tax liabilities.

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

Transaction code “F” indicates payment of an exercise price or tax liability by delivering securities. In this case, Rossmiller delivered SEACOR Marine shares to satisfy tax withholding obligations tied to equity compensation, not as a discretionary buy or sell in the market.

What is Gregory Scott Rossmiller’s role at SEACOR Marine Holdings Inc. (SMHI)?

Gregory Scott Rossmiller serves as senior vice president and chief accounting officer at SEACOR Marine Holdings Inc. His Form 4 filing reflects an executive-level insider transaction related to tax withholding on equity compensation, not a typical market stock trade.