UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO SECTION 13A-16 OR 15D-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of June 2026

Commission File Number: 001-42020

MAREX GROUP PLC

(Translation of registrant’s name into English)


155 Bishopsgate London EC2M 3TQ United Kingdom +44 20 7655 6000		140 East 45th Street, 10th Floor New York, New York 10017 (212) 618-2800

(Address of Principal Executive Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

EXPLANATORY NOTE

Issuance of U.S.$500 million perpetual subordinated resettable fixed rate notes

On June 9, 2026, Marex Group plc issued a press release announcing that it has completed its offering of U.S.$500 million perpetual subordinated resettable fixed rate notes.

A copy of the press release a is furnished herewith as Exhibit 99.1

EXHIBIT INDEX

The following exhibits are filed as part of this Form 6-K:


Exhibit No.		Description

99.1		Press Release dated June 9, 2026

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


Marex Group plc (Registrant)

By:		/s/ Robert Irvin
Name:		Robert Irvin
Title:		Chief Financial Officer

Dated: June 9, 2026

Marex Group plc 6-K