Paolo Tonucci - 18 Mar 2026 Form 3 Insider Report for Marex Group plc (MRX)

Role: Chief Strategist and CEO, Capital Markets Exhibit 24 - Power of Attorney
Signature: /s/ Scott Linsley, as Attorney-in-Fact
Issuer symbol: MRX
Transactions as of: 18 Mar 2026
Net transactions value: $0
Form type: 3
Filing time: 18 Mar 2026, 16:05:09 UTC
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Tonucci Paolo	Chief Strategist and CEO, Capital Markets Exhibit 24 - Power of Attorney	C/O MAREX GROUP PLC, 155 BISHOPSGATE, LONDON, UNITED KINGDOM	/s/ Scott Linsley, as Attorney-in-Fact	18 Mar 2026	0002057942

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	MRX	Ordinary Shares						1,380,023	18 Mar 2026	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The number of ordinary shares reported herein includes 286,871 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 Exhibit 24 - Power of Attorney