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MRX 6-K

Marex Group Ltd (MRX)

6-K 2025-10-14 For: 2025-10-14
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Added on April 10, 2026

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 October 2025

Commission File Number: 001-42020

MAREX GROUP PLC

(Translation of registrant’s name into English)

155 Bishopsgate<br><br>London EC2M 3TQ<br><br>United<br>Kingdom<br><br>+44 20 7655 6000 140 East 45th Street, 10th Floor<br><br>New York, New York 10017<br><br>(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

Purchase of Ordinary Shares by Chief Executive Officer

On October 13, 2025, Marex Group plc (the “Company”) issued a press release titled “Marex announces purchase of shares by Chief Executive Officer”. A copy of the press release is furnished as Exhibit 99.1 herewith.

EXHIBIT INDEX

The following exhibit is furnished as part of this Form 6-K:

Exhibit<br>No. Description
99.1 Press release dated October 13, 2025 titled “Marex announces purchase of shares by Chief Executive Officer”

SIGNATURE

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, thereunto duly authorized.

Marex Group plc
Date: October 14, 2025 By: /s/ Robert Irvin
Robert Irvin
Chief Financial Officer

EX-99.1

Exhibit 99.1

Marex announces purchase of shares by Chief Executive Officer

New York, Oct. 13, 2025 — Marex Group plc (“Marex”; NASDAQ: MRX), the diversified global financial services platform, today announced that its Chief Executive Officer Ian Lowitt purchased 32,465 ordinary shares in Marex in the open market on Friday October 10, bringing his total holding to 2,615,016 ordinary shares.

Ends

About Marex

Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The Group provides comprehensive breadth and depth of coverage across four core services: Clearing, Agency and Execution, Market Making and Hedging and Investment Solutions. It has a leading franchise in many major metals, energy and agricultural products, with access to 60 exchanges. The Group provides access to the world’s major commodity markets, covering a broad range of clients that include some of the largest commodity producers, consumers and traders, banks, hedge funds and asset managers. With more than 40 offices worldwide, the Group has over 2,400 employees across Europe, Asia and the Americas. For more information visit www.marex.com.

Enquiries please contact:

Marex: Nicola Ratchford / Adam Strachan

+44 778 654 8889 / +1 914 200 2508

[email protected] / [email protected]

FTI Consulting US / UK

+1 716 525 7239 / +44 7976870961

[email protected]