Marex Group names Kory Sorenson to board from Nov. 2

Sorenson has more than 30 years of experience across governance, financial strategy and risk oversight.

Rhea-AI Filing Summary

Marex Group Limited (MRX) announced that Kory Sorenson will join its Board of Directors effective November 2, 2026. Sorenson has more than 30 years of experience across governance, financial strategy and risk oversight. She serves on international company boards and has experience chairing audit, risk and remuneration committees. Earlier, she held senior roles in insurance capital markets at Barclays Capital and Credit Suisse, advising European financial institutions on capital structuring, mergers and acquisitions, regulatory capital and risk management.

Filing Explained

Marex says the appointment information in this Form 6-K is incorporated into its existing Form F-3 and Form S-8 registration statements, thereby amending those documents and updating the information they contain.

Key Figures

Experience: More than 30 years Exchanges: More than 60 exchanges Active clients: Over 3,400 active clients +2 more

5 metrics

Experience More than 30 years Kory Sorenson's experience across governance, financial strategy and risk oversight

Exchanges More than 60 exchanges Marex has access to these exchanges

Active clients Over 3,400 active clients Marex company profile

Offices More than 50 offices Marex offices worldwide

Employees Over 3,000 employees Marex company profile

Key Terms

Insurance Capital Markets, regulatory capital, capital structuring, Market Making

4 terms

Insurance Capital Markets financial

"Head of Insurance Capital Markets at Barclays Capital"

regulatory capital regulatory

"capital structuring, mergers and acquisitions, regulatory capital and risk management"

Regulatory capital is the cushion of money and high-quality assets that financial firms are required by regulators to hold so they can absorb losses and keep operating during stress. Think of it like a mandated emergency fund for a bank: it matters to investors because higher or healthier regulatory capital reduces the risk of failure, influences a firm’s ability to lend or pay dividends, and is closely watched as a measure of financial strength.

capital structuring financial

"advised major European financial institutions on capital structuring"

Capital structuring is the mix and balance of a business’s funding sources—like loans, bonds, and owner equity—and the decisions about how much of each to use. Think of it as a household choosing between a mortgage, credit cards, and savings to pay for a home: the choice affects monthly bills, risk if income drops, and how much of future profits owners keep. Investors care because the structure shapes a company’s risk, borrowing cost, growth flexibility, and potential returns.

Market Making financial

"Market Making and Hedging"

Market making is when a firm or trader continuously posts prices at which they will buy and sell a particular stock, standing ready to trade so others can buy or sell quickly. Think of it as a shopkeeper who keeps items on the shelf and quotes both a buying and selling price; the difference is their small profit and the service they provide. For investors, market makers lower the cost and delay of executing trades and help keep prices stable, while their withdrawal can make trading harder or more volatile.

FAQ

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

When will Kory Sorenson join the Marex Group (MRX) board?

Kory Sorenson will join the board effective November 2, 2026.

What experience does Kory Sorenson have for the Marex Group (MRX) board?

Kory Sorenson has more than 30 years of experience across governance, financial strategy and risk oversight. She serves on boards of international companies and has experience chairing audit, risk and remuneration committees. Previously, she was Managing Director and Head of Insurance Capital Markets at Barclays Capital and Head of Insurance and French Bank Capital Markets at Credit Suisse.

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

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Available on EDGAR 10/27/2026 - 07:02 AM EDT Accepted by SEC EDGAR 10/27/2026 - 07:02 AM EDT Learn about SEC filing dates

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 2026

Commission File Number: 001-42020

MAREX GROUP LIMITED

(Translation of registrant’s name into English)

Crawford House

50 Cedar Avenue

Hamilton, HM 11

Bermuda

+1 441-295-6500

(Address of Principal Executive Office)

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 ☐

INCORPORATION BY REFERENCE

The information included in this Report on Form 6-K under “Explanatory Note”, excluding Exhibit 99.1 hereto, is hereby incorporated by reference into the Company’s Registration Statements on Form F-3 (Registration Nos. 333-286884 and 333-289203) and Registration Statements on Form S-8 (Registration Nos. 333-278953 and 333-298462), hereby amending them, and to be a part thereof from the date on which this report is filed, to the extent not superseded by documents or reports subsequently filed or furnished.

EXPLANATORY NOTE

On October 27, 2026, Marex Group Limited (the “Company”) announced the appointment of Kory Sorenson to the Company’s Board of Directors, effective from November 2, 2026. A copy of the press release announcing Ms. Sorenson’s appointment is furnished herewith as Exhibit 99.1.

EXHIBIT INDEX

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

Exhibit No.		Description
99.1		Press Release Dated as of October 27, 2026

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 Limited
Date: October 27, 2026				By:		/s/ Robert Irvin
						Robert Irvin
						Chief Financial Officer

Exhibit 99.1

Marex appoints Kory Sorenson to Group Board

NEW YORK, Oct. 27, 2026 (GLOBE NEWSWIRE) — Marex Group Limited (‘Marex’ or the ‘Group’, NASDAQ: MRX), the diversified global financial services platform, today announces that Kory Sorenson will join the Group Board with effect from 2 November 2026.

Kory is a financial markets expert with more than 30 years of experience across governance, financial strategy and risk oversight at listed and privately owned organizations globally. She currently serves on the boards of a number of international companies spanning consumer goods, testing and inspection, financial services and private banking, where she has extensive experience chairing audit, risk and remuneration committees.

Prior to her non-executive career, Kory was Managing Director and Head of Insurance Capital Markets at Barclays Capital and Head of Insurance and French Bank Capital Markets at Credit Suisse. Throughout her executive career, she advised major European financial institutions on capital structuring, mergers and acquisitions, regulatory capital and risk management.

John Pietrowicz, Chair of the Marex Board, commented: “We are delighted to welcome Kory to the Marex Board. She brings extensive experience across global financial markets, financial strategy and corporate governance, together with a strong track record of risk oversight and board leadership at major international organizations. We look forward to benefiting from her expertise and insight as Marex continues to grow.”

Forward Looking Statements:

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained in this press release that do not relate to matters of historical fact should be considered forward-looking statements, including statements regarding the expected benefits of Kory Sorenson’s appointment to the Marex Board and Marex’s continued growth. In some cases, these forward-looking statements can be identified by words or phrases such as “may,” “will,” “expect,” “anticipate,” “aim,” “estimate,” “intend,” “plan,” “believe,” “potential,” “continue,” “is/are likely to” or other similar expressions.

These forward-looking statements are subject to risks, uncertainties and assumptions, some of which are beyond our control. In addition, these forward-looking statements reflect our current views with respect to future events and are not a guarantee of future performance. Actual outcomes may differ materially from the information contained in the forward-looking statements as a result of a number of factors, including, without limitation, the risks discussed under the caption “Risk Factors” in our Annual Report on Form 20-F for the year ended December 31, 2025, filed with the Securities and Exchange Commission (the “SEC”) and our other reports filed with the SEC. The forward-looking statements made in this press release relate only to events or information as of the date on which the statements are made in this press release. Except as required by law, we undertake no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise, after the date on which the statements are made or to reflect the occurrence of unanticipated events. In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date of this press release, and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain, and investors are cautioned not to unduly rely upon these statements.

About Marex: Marex Group Limited (NASDAQ:MRX) provides market access, infrastructure services and essential liquidity to clients across global commodity and financial markets. The Group provides comprehensive breadth and depth of coverage across four 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 more than 60 exchanges. Marex has over 3,400 active clients, including some of the largest commodity producers, consumers and traders, banks, hedge funds and asset managers. With more than 50 offices worldwide, the Group has over 3000 employees across Europe, Asia and the Americas. For more information visit www.marex.com.

Enquiries please contact:

Nicola Ratchford / Adam Strachan

+44 778 654 8889 / +1 914 200 2508

nratchford@marex.com / astrachan@marex.com

FTI Consulting US / UK

+1 716 525 7239 / +44 7976870961

marex@fticonsulting.com

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 EX-99.1 7.3 KB