Quick Takeaways
- MRX - Marex Group plc has 11 insiders with reported activity on this page.
- Net insider value flow over the last year: -$4,433,409.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 11 Insiders of Marex Group plc
- Symbol
- MRX on Nasdaq
- Location
- London
What Changed
- Buy value: ; sell value: $4,433,409.
- Net share flow: -88,717.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$4,433,409.
Buys
$0
Shares: 0
Insiders: 0
Sells
$4,433,409
Shares: 88,717
Insiders: 3
Net
-$4,433,409
Shares: -88,717
Insiders: -3
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 88,717 | $0 | $4,433,409 | -$4,433,409 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Marex Group plc executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Lowitt Ian T. | Chief Executive Officer, Director | $122,047,878 | Mixed | 18 Mar 2026 | ||
| Simon van den Born | President | $78,028,226 | -$1,253,021 | -1.6% | Filing P/S | 20 Apr 2026 |
| Paolo Tonucci | Chief Strategist and CEO, Capital Markets | $75,838,791 | -$1,788,185 | -2.3% | Filing P/S | 11 May 2026 |
| Thomas Texier | Group Head of Clearing | $12,216,908 | -$1,392,203 | -10% | Filing P/S | 01 May 2026 |
| Nilesh Jethwa | CEO, Marex Solutions | $12,046,019 | Mixed | 18 Mar 2026 | ||
| Rob Irvin | Chief Financial Officer, Director | $1,599,224 | Mixed | 18 Mar 2026 | ||
| Robert Mark Pickering | Director | $1,246,341 | Mixed | 18 Mar 2026 | ||
| Schweinitz Konstantin Graf von | Director | $1,011,267 | Mixed | 18 Mar 2026 | ||
| Linda K. Myers | Director | $934,210 | Mixed | 18 Mar 2026 | ||
| John W. Pietrowicz | Director | $934,210 | Mixed | 18 Mar 2026 | ||
| Sarah Ing | Director | $447,818 | Mixed | 18 Mar 2026 |
Top shareholders of Marex Group plc (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| JRJ Investor 1 Limited Partnership |
13D/G
|
JRJ Investor 1 LP |
10%
|
7,160,826
|
$282,614,171 | $0 | 30 Jun 2025 | |
| MASP Investor Limited Partnership |
13D/G
|
— |
7%
|
5,024,604
|
$198,304,539 | $0 | 30 Jun 2025 | |
| FMR LLC |
13D/G
13F
|
Company |
5.1%
|
3,724,911
|
$174,959,070 | $0 | 31 Mar 2026 | |
| BlackRock, Inc. |
13F
|
Company |
5.4%
|
3,966,534
|
$152,156,245 | — | 31 Dec 2025 | |
| Capital International Investors |
13F
|
Company |
4.8%
|
3,488,093
|
$133,803,247 | — | 31 Dec 2025 | |
| Lowitt Ian T. |
3/4/5
|
Chief Executive Officer, Director |
4%
|
2,907,979
|
$122,047,878 | — | 18 Mar 2026 | |
| Simon van den Born |
3/4/5
|
President |
2.1%
|
1,508,964
|
$78,028,226 | -$1,253,021 | 20 Apr 2026 | |
| Paolo Tonucci |
3/4/5
|
Chief Strategist and CEO, Capital Markets |
1.8%
|
1,346,689
|
$75,838,791 | -$1,788,185 | 11 May 2026 | |
| LOOMIS SAYLES & CO L P |
13F
|
Company |
2.7%
|
1,935,503
|
$74,245,895 | — | 31 Dec 2025 | |
| Grandeur Peak Global Advisors, LLC |
13F
|
Company |
2.4%
|
1,779,743
|
$68,270,941 | — | 31 Dec 2025 | |
| ALLIANCEBERNSTEIN L.P. |
13F
|
Company |
2.4%
|
1,750,252
|
$67,139,667 | — | 31 Dec 2025 | |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
2.4%
|
1,738,927
|
$66,705,240 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
2.1%
|
1,548,637
|
$59,407,000 | — | 31 Dec 2025 | |
| JENNISON ASSOCIATES LLC |
13F
|
Company |
2%
|
1,475,255
|
$56,590,782 | — | 31 Dec 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
|
Company |
1.9%
|
1,396,390
|
$53,565,520 | — | 31 Dec 2025 | |
| Granahan Investment Management, LLC |
13F
|
Company |
1.9%
|
1,376,993
|
$52,821,451 | — | 31 Dec 2025 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
|
Company |
1.8%
|
1,305,455
|
$50,077,254 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
1.8%
|
1,294,978
|
$49,675,355 | — | 31 Dec 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
1.7%
|
1,260,709
|
$48,360,797 | — | 31 Dec 2025 | |
| SAMLYN CAPITAL, LLC |
13F
|
Company |
1.6%
|
1,141,911
|
$43,803,706 | — | 31 Dec 2025 | |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND |
13F
|
Company |
1.5%
|
1,114,349
|
$42,746,428 | — | 31 Dec 2025 | |
| THORNBURG INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.5%
|
1,102,143
|
$42,278,206 | — | 31 Dec 2025 | |
| Ophir Asset Management Pty Ltd |
13F
|
Company |
1.5%
|
1,087,160
|
$41,703,458 | — | 31 Dec 2025 | |
| Artisan Partners Limited Partnership |
13F
|
Company |
1.2%
|
904,957
|
$34,714,151 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
1.2%
|
903,123
|
$34,643,798 | — | 31 Dec 2025 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
1.2%
|
860,024
|
$32,990,521 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
1.1%
|
839,536
|
$32,204,601 | — | 31 Dec 2025 | |
| Allspring Global Investments Holdings, LLC |
13F
|
Company |
1.1%
|
814,733
|
$30,910,970 | — | 31 Dec 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
1%
|
763,460
|
$29,286,326 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
1%
|
759,836
|
$29,147,309 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.97%
|
709,724
|
$27,225,012 | — | 31 Dec 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.93%
|
679,600
|
$26,069,456 | — | 31 Dec 2025 | |
| VICTORY CAPITAL MANAGEMENT INC |
13F
|
Company |
0.92%
|
670,025
|
$25,702,159 | — | 31 Dec 2025 | |
| WESTWOOD HOLDINGS GROUP INC |
13F
|
Company |
0.77%
|
564,236
|
$21,644,093 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.76%
|
554,490
|
$21,270,237 | — | 31 Dec 2025 | |
| Praetorian PR LLC |
13F
|
Company |
0.68%
|
500,000
|
$19,180,000 | — | 31 Dec 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.68%
|
496,560
|
$19,048,042 | — | 31 Dec 2025 | |
| Deltroit Asset Management (UK) LLP |
13F
|
Company |
0.65%
|
474,773
|
$18,212,292 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.6%
|
435,772
|
$16,716,227 | — | 31 Dec 2025 | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.58%
|
422,471
|
$16,205,988 | — | 31 Dec 2025 | |
| Portolan Capital Management, LLC |
13F
|
Company |
0.57%
|
418,745
|
$16,063,058 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
0.55%
|
399,956
|
$15,342,313 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.52%
|
381,008
|
$14,615,466 | — | 31 Dec 2025 | |
| SEI INVESTMENTS CO |
13F
|
Company |
0.48%
|
351,583
|
$13,486,724 | — | 31 Dec 2025 | |
| GLENMEDE TRUST CO NA |
13F
|
Company |
0.45%
|
326,415
|
$12,521,278 | — | 31 Dec 2025 | |
| Thomas Texier |
3/4/5
|
Group Head of Clearing |
0.31%
|
228,231
|
$12,216,908 | -$1,392,203 | 01 May 2026 | |
| Nilesh Jethwa |
3/4/5
|
CEO, Marex Solutions |
0.39%
|
287,015
|
$12,046,019 | — | 18 Mar 2026 | |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE |
13F
|
Company |
0.43%
|
312,493
|
$11,987,231 | — | 31 Dec 2025 | |
| ALGERT GLOBAL LLC |
13F
|
Company |
0.43%
|
312,351
|
$11,982,000 | — | 31 Dec 2025 | |
| Russell Investments Group, Ltd. |
13F
|
Company |
0.43%
|
310,452
|
$11,908,941 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for Marex Group plc
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Paolo Tonucci | MRX | Ordinary Shares | Sale | -1.22% | $932,136 | $55.92 | -16,668 | 1,346,689 | 11 May 2026 | Direct |
| Thomas Texier | MRX | Ordinary Shares | Sale | -5.95% | $764,487 | $52.99 | -14,427 | 228,231 | 01 May 2026 | Direct |
| Simon van den Born | MRX | Ordinary Shares | Sale | -0.87% | $675,916 | $50.95 | -13,265 | 1,508,964 | 20 Apr 2026 | Direct |
| Paolo Tonucci | MRX | Ordinary Shares | Sale | -1.21% | $856,049 | $51.36 | -16,666 | 1,363,357 | 13 Apr 2026 | Direct |
| Simon van den Born | MRX | Ordinary Shares | Sale | -0.86% | $577,105 | $43.51 | -13,264 | 1,522,229 | 01 Apr 2026 | Direct |
| Thomas Texier | MRX | Ordinary Shares | Sale | -5.61% | $627,715 | $43.51 | -14,427 | 242,658 | 01 Apr 2026 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.