Simon van den Born - 07 Sep 2026 Form 4 Insider Report for Marex Group Ltd (MRX)

Reporting relationship: President
Issuer ticker: MRX
Reported as of: 07 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 09 Sep 2026, 16:05:08 UTC
Prior SEC filing: 21 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Scott Linsley as Attorney-in-Fact, for Simon van den Born

Key filing fact

Simon van den Born filed Form 4 for Marex Group Ltd (MRX) on 09 Sep 2026.

Key facts

This page summarizes Simon van den Born's Form 4 filing for Marex Group Ltd (MRX).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 09 Sep 2026, 16:05.

Change

Previous filing in this sequence was filed on 21 Aug 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002057618 Primary reporting owner

Van Den Born Simon

Relationship: President
Address: C/O MAREX GROUP LIMITED, 155 BISHOPSGATE, LONDON, UNITED KINGDOM
Signature: /s/ Scott Linsley as Attorney-in-Fact, for Simon van den Born
Signature date: 09 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MRX transaction

Ordinary Shares

Tax liability

Transaction value
Shares: -13,215
Change %: -0.88%
Price: $78.27^*
Shares after: 1,485,619
Date: 07 Sep 2026
Ownership: Direct
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of shares underlying the Issuer's 2022 Annual Long Term Incentive Plan.

Footnote F2

The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on September 4, 2026.

Footnote F3

The number of ordinary shares reported herein includes (i) 20,367 shares underlying the Issuer's 2022 Annual Long Term Incentive Plan, and (ii) 272,659 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.