Marex Group (MRX) director discloses 22,259-share initial stake

Rhea-AI Filing Summary

Marex Group plc director John W. Pietrowicz has filed an initial ownership report showing 22,259 Ordinary Shares. This figure represents his direct holdings as reported in the Form 3. The amount includes 2,787 shares tied to restricted share awards, which are contingent rights that convert into ordinary shares only upon vesting and settlement of the awards.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Pietrowicz John W.

Role Director

Type	Security	Shares	Price	Value
holding	Ordinary Shares	--	--	--

Holdings After Transaction: Ordinary Shares — 22,259 shares (Direct)

Footnotes (1)

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Understanding Insider Trading Forms →

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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1. Name and Address of Reporting Person^*

Pietrowicz John W.

(Last) (First) (Middle)

C/O MAREX GROUP PLC

155 BISHOPSGATE

(Street)

LONDON EC2M 3TQ

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

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

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Ordinary Shares	22,259(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The number of ordinary shares reported herein includes 2,787 shares underlying restricted share 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:

Exhibit 24 - Power of Attorney

	/s/ Scott Linsley, as Attorney-in-Fact	03/18/2026
	** 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 5 (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 3: SEC 1473 (03-26)

FAQ

What does Marex Group (MRX) director John W. Pietrowicz report owning on his Form 3?

He reports beneficial ownership of 22,259 Ordinary Shares of Marex Group plc. This total reflects his direct stake as a director and forms the baseline of his disclosed equity position in the company.

How many Marex Group (MRX) shares are tied to restricted share awards for this director?

The holding includes 2,787 shares underlying restricted share awards. Each award represents a contingent right to receive one ordinary share upon vesting and settlement, so these shares are not fully vested yet.

Is the Marex Group (MRX) Form 3 filing a buy or sell transaction?

The Form 3 is not a buy or sell transaction. It is an initial statement of beneficial ownership that simply discloses the director’s existing 22,259-share position, including restricted share awards, without reporting any new trades.

Are the restricted share awards for Marex Group (MRX) already ordinary shares?

The restricted share awards are contingent rights, not fully unrestricted shares yet. Each award converts into one ordinary share only after vesting and settlement conditions are met, as described in the filing’s footnote.

Does the Marex Group (MRX) director hold the shares directly or indirectly?

The filing classifies the 22,259 Ordinary Shares as direct ownership. The ownership code is “D,” indicating the shares, including those underlying restricted awards, are reported as directly owned by the director.