Marex director has 558 shares withheld for taxes

Marex Group plc director John W. Pietrowicz reported a routine tax-related share disposition.

Rhea-AI Filing Summary

Marex Group plc director John W. Pietrowicz reported a routine tax-related share disposition. In connection with the vesting of previously reported restricted share awards, 558 ordinary shares were withheld to satisfy tax obligations, using a reference price of $52.94 per share. After this withholding, he directly holds 21,701 ordinary shares, and no open-market buy or sell transaction occurred.

Insider Trade Summary

Exercise Price or Tax Liability: 558 shares

Exercise Price or Tax Liability 1 txn

Insider Pietrowicz John W.

Role Director

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Ordinary Shares	558	$52.94	$30K

Holdings After Transaction: Ordinary Shares — 21,701 shares (Direct)

Footnotes (2)

1. F1. Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying restricted share awards.
2. F2. The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 29, 2026.

Key Figures

Shares withheld for taxes: 558 shares Reference share price: $52.94 per share Shares held after transaction: 21,701 shares

3 metrics

Shares withheld for taxes 558 shares Tax withholding on vesting of restricted share awards

Reference share price $52.94 per share Closing price on Nasdaq on May 29, 2026

Shares held after transaction 21,701 shares Ordinary shares directly held after tax withholding

Key Terms

restricted share awards, tax withholding obligation, ordinary shares

3 terms

restricted share awards financial

"in connection with the vesting of certain previously reported shares underlying restricted share awards"

Restricted share awards are grants of company stock given to employees or executives that cannot be sold or transferred until certain conditions—typically staying with the company for a set time or meeting performance goals—are met. They matter to investors because they can dilute existing shares when they vest, signal management’s incentives and confidence, and affect a company’s future earnings per share much like a delayed paycheck that becomes available only after you meet agreed milestones.

tax withholding obligation financial

"withheld to satisfy the tax withholding obligation in connection with the vesting"

ordinary shares financial

"Represents the number of ordinary shares withheld to satisfy the tax withholding obligation"

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Marex Group (MRX) director John W. Pietrowicz report on this Form 4?

He reported a tax-related share disposition. 558 ordinary shares were withheld to cover taxes from vesting restricted share awards, and he now directly holds 21,701 ordinary shares in Marex Group plc.

Was the Marex Group (MRX) Form 4 transaction an open-market sale?

No, it was not an open-market sale. The 558 shares were withheld by the issuer to satisfy a tax withholding obligation tied to vesting restricted share awards, rather than being sold on the market.

How many Marex Group (MRX) shares were withheld for taxes in this filing?

The filing shows that 558 ordinary shares of Marex Group plc were withheld. This withholding satisfied the director’s tax liability arising from the vesting of certain previously reported restricted share awards.

What price was used for the Marex Group (MRX) tax withholding shares?

The price used was $52.94 per share. The filing states this represents the closing price of Marex Group’s ordinary shares on the Nasdaq Stock Market LLC on May 29, 2026 for the tax withholding calculation.

How many Marex Group (MRX) shares does the director hold after this Form 4?

After the tax withholding, John W. Pietrowicz directly holds 21,701 ordinary shares of Marex Group plc. This figure reflects his position immediately following the 558-share tax-withholding disposition reported in the Form 4.

What triggered the tax withholding transaction for Marex Group (MRX)?

The tax withholding was triggered by the vesting of previously reported restricted share awards. When those awards vested, 558 ordinary shares were withheld to cover the associated tax obligation instead of being delivered as additional freely held shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/02/2026 - 04:05 PM EDT Learn about SEC filing dates

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^*

Pietrowicz John W.

(Last) (First) (Middle)

C/O MAREX GROUP PLC, 155 BISHOPSGATE

(Street)

LONDON UNITED KINGDOM EC2M 3TQ

(City) (State) (Zip)

UNITED KINGDOM

(Country)

2. Issuer Name and Ticker or Trading Symbol
Marex Group plc [ MRX ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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

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

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

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
Ordinary Shares	06/01/2026		F		558(1)	D	$52.94(2)	21,701	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:

1. Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying restricted share awards.

2. The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 29, 2026.

	/s/ Scott Linsley as Attorney-in-Fact, for John W. Pietrowicz	06/02/2026
	** 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.
* Form 4: SEC 1474 (03-26)