Marex CEO reports 2.9M-share ownership stake

Marex Group plc Chief Executive Officer Ian T. Lowitt filed an initial ownership report showing he holds 2,907,979 ordinary shares.

Rhea-AI Filing Summary

Marex Group plc Chief Executive Officer Ian T. Lowitt filed an initial ownership report showing he holds 2,907,979 ordinary shares. This total includes 278,406 shares underlying deferred bonus plan awards, each representing a contingent right to receive one ordinary share upon vesting and settlement.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Lowitt Ian T

Role Chief Executive Officer

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

Holdings After Transaction: Ordinary Shares — 2,907,979 shares (Direct)

Footnotes (1)

1. F1. The number of ordinary shares reported herein includes 278,406 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.

FAQ

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

What does Marex Group (MRX) CEO Ian Lowitt report on this Form 3?

Ian T. Lowitt reports beneficial ownership of 2,907,979 ordinary shares of Marex Group plc. This Form 3 is an initial ownership statement, documenting his existing stake rather than a new purchase or sale of shares.

How many Marex Group (MRX) shares are tied to deferred bonus awards?

The filing states that 278,406 shares are underlying deferred bonus plan awards previously granted. Each award represents a contingent right to receive one ordinary share upon vesting and settlement of the applicable award.

Are the deferred bonus plan awards for MRX already delivered as shares?

No. The deferred bonus plan awards give a contingent right to receive one ordinary share per award. The shares are only delivered upon the vesting and settlement of each applicable award, according to the disclosure.

Does the Marex (MRX) Form 3 show any recent insider buying or selling?

The Form 3 functions as an initial ownership report and does not show explicit buy or sell transactions. It simply lists Ian T. Lowitt’s current direct holdings, including shares tied to deferred bonus plan awards.

What type of security does the Marex (MRX) Form 3 cover for the CEO?

The report covers Ordinary Shares of Marex Group plc. It discloses both currently held ordinary shares and those underlying deferred bonus plan awards that convert into ordinary shares upon future vesting and settlement.

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

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Accepted by SEC EDGAR 03/18/2026 - 04:05 PM EDT Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Lowitt Ian T

(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
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

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	2,907,979(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 278,406 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:

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)