Marex executive reports tax-withholding share disposition

Marex Group plc executive Paolo Tonucci reported a tax-withholding share disposition related to equity compensation, not an open-market trade.

Rhea-AI Filing Summary

Marex Group plc executive Paolo Tonucci reported a tax-withholding share disposition related to equity compensation, not an open-market trade. On this Form 4, 31,080 ordinary shares were withheld on May 22, 2026 to satisfy tax obligations tied to the vesting of previously granted deferred bonus plan awards at a reference price of $54.45 per share.

After this withholding, Tonucci directly holds 1,315,609 ordinary shares, which the filing notes includes 220,746 shares underlying deferred bonus plan awards that will be delivered only upon future vesting and settlement. The transaction reflects routine tax administration on compensation rather than a discretionary sale.

Insider Trade Summary

Exercise Price or Tax Liability: 31,080 shares

Exercise Price or Tax Liability 1 txn

Insider Tonucci Paolo

Role See Remarks

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Ordinary Shares	31,080	$54.45	$1.69M

Holdings After Transaction: Ordinary Shares — 1,315,609 shares (Direct)

Footnotes (3)

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 deferred bonus plan awards.
2. F2. The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 21, 2026.
3. F3. The number of ordinary shares reported herein includes 220,746 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

Key Figures

Shares withheld for tax: 31,080 shares Reference share price: $54.45 per share Shares held after transaction: 1,315,609 shares +1 more

4 metrics

Shares withheld for tax 31,080 shares Ordinary shares withheld on May 22, 2026 for tax obligations

Reference share price $54.45 per share Closing price on Nasdaq on May 21, 2026 used in filing

Shares held after transaction 1,315,609 shares Direct Marex Group ordinary share holdings following withholding

Deferred bonus plan underlying shares 220,746 shares Contingent rights to receive one share each upon vesting and settlement

Key Terms

tax withholding obligation, deferred bonus plan awards, vesting, contingent right

4 terms

tax withholding obligation financial

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

deferred bonus plan awards financial

"shares underlying deferred bonus plan awards previously granted to the Reporting Person"

Deferred bonus plan awards are payments promised to employees or executives that are earned now but paid out later, often only if certain performance goals are met or the employee remains with the company. For investors, they matter because they influence management’s incentives and company expenses over time—like a delayed paycheck that encourages someone to stay and meet targets—and can affect future cash needs, reported compensation costs, and potential share dilution.

vesting financial

"in connection with the vesting of certain previously reported shares"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

contingent right financial

"Each award represents a contingent right to receive one (1) ordinary share"

FAQ

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

What insider transaction did Marex Group (MRX) report for Paolo Tonucci?

Marex Group reported that executive Paolo Tonucci had 31,080 ordinary shares withheld to cover tax obligations on vesting deferred bonus awards. This is a tax-withholding disposition under a compensation plan, not an open-market share purchase or sale.

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

No, the transaction was not an open-market sale. The 31,080 ordinary shares were withheld by Marex Group to satisfy tax withholding obligations when previously granted deferred bonus plan awards vested, a routine administrative step in equity compensation.

How many Marex Group (MRX) shares does Paolo Tonucci hold after the transaction?

After the withholding transaction, Paolo Tonucci directly holds 1,315,609 Marex Group ordinary shares. This total includes 220,746 shares underlying deferred bonus plan awards that represent contingent rights to receive one share each upon future vesting and settlement.

What price per share is associated with the Marex Group (MRX) tax-withholding event?

The filing reports a reference price of $54.45 per Marex Group ordinary share for the 31,080 shares withheld. This reflects the Nasdaq closing price on May 21, 2026, and is used for valuing the tax-withholding disposition, not a separately negotiated trade.

What are the deferred bonus plan awards mentioned in the Marex Group (MRX) Form 4?

Deferred bonus plan awards are equity-based compensation grants where each award represents a contingent right to receive one ordinary share upon vesting and settlement. The filing states 220,746 Marex Group shares are currently underlying such awards previously granted to Paolo Tonucci.

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

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Accepted by SEC EDGAR 05/27/2026 - 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^*

Tonucci Paolo

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/22/2026

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	05/22/2026		F		31,080(1)	D	$54.45(2)	1,315,609(3)	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 deferred bonus plan awards.

2. The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 21, 2026.

3. The number of ordinary shares reported herein includes 220,746 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

Remarks:

Chief Strategist and CEO, Capital Markets

	/s/ Scott Linsley as Attorney-in-Fact, for Paolo Tonucci	05/27/2026
	** 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)