Marex's top three insider shareholders as of September 17, 2026 are Ian T Lowitt (Chief Executive Officer, 2.84Mn shares), Den Born Simon Van (President, 1.47Mn shares), Paolo Tonucci (Officer, 1.27Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Ian T Lowitt | Chief Executive Officer | 2,835,472 | 0 | 2,835,472 | 45.6% | 09 Sep, 2026 |
| 2 | Den Born Simon Van | President | 1,470,348 | 0 | 1,470,348 | 23.7% | 16 Sep, 2026 |
| 3 | Paolo Tonucci | Officer | 1,269,571 | 0 | 1,269,571 | 20.4% | 16 Sep, 2026 |
| 4 | Nilesh Jethwa | Ceo, Marex Solutions | 282,950 | 0 | 282,950 | 4.6% | 09 Sep, 2026 |
| 5 | Thomas Texier | Group Head Of Clearing | 207,019 | 0 | 207,019 | 3.3% | 03 Jun, 2026 |
| 6 | Robert Mark Pickering | Director | 31,766 | 0 | 31,766 | 0.5% | 11 Jun, 2026 |
| 7 | Rob Irvin | Chief Financial Officer | 31,046 | 0 | 31,046 | 0.5% | 18 Aug, 2026 |
| 8 | Konstantin Graf Von Schweinitz | Director | 26,165 | 0 | 26,165 | 0.4% | 11 Jun, 2026 |
| 9 | John W. Pietrowicz | Director | 23,771 | 0 | 23,771 | 0.4% | 11 Jun, 2026 |
| 10 | Linda Kristine Myers | Director | 23,214 | 0 | 23,214 | 0.4% | 11 Jun, 2026 |
| 11 | Sarah Ing | Director | 10,895 | 0 | 10,895 | 0.2% | 11 Jun, 2026 |
| 12 | Georges Assi | Director | 2,070 | 0 | 2,070 | 0.0% | 11 Jun, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 07 Sep, 2026 | Nilesh Jethwa | Ceo, Marex Solutions | Disposed F | 31,567 | $78.27 | $2.47Mn | 282,950 | Direct |
| 07 Sep, 2026 | Den Born Simon Van | President | Disposed F | 13,215 | $78.27 | $1.03Mn | 1,485,619 | Direct |
| 07 Sep, 2026 | Paolo Tonucci | Officer | Disposed F | 18,293 | $78.27 | $1.43Mn | 1,286,237 | Direct |
| 07 Sep, 2026 | Ian T Lowitt | Chief Executive Officer | Disposed F | 36,587 | $78.27 | $2.86Mn | 2,835,472 | Direct |
| 19 Aug, 2026 | Den Born Simon Van | President | Acquired A | 33,582 | $0.00 | $0 | 1,498,834 | Direct |
| 19 Aug, 2026 | Paolo Tonucci | Officer | Acquired A | 38,921 | $0.00 | $0 | 1,304,530 | Direct |
| 19 Aug, 2026 | Ian T Lowitt | Chief Executive Officer | Acquired A | 77,843 | $0.00 | $0 | 2,872,059 | Direct |
| 19 Aug, 2026 | Nilesh Jethwa | Ceo, Marex Solutions | Acquired A | 67,163 | $0.00 | $0 | 314,517 | Direct |
| 14 Aug, 2026 | Rob Irvin | Chief Financial Officer | Disposed S | 3,500 | $70.91 | $248.17K | 31,246 | Direct |
| 14 Aug, 2026 | Rob Irvin | Chief Financial Officer | Disposed S | 200 | $71.87 | $14.37K | 31,046 | Direct |
| 10 Aug, 2026 | Paolo Tonucci | Officer | Disposed S | 12,250 | $60.64 | $742.84K | 1,270,027 | Direct |
| 10 Aug, 2026 | Paolo Tonucci | Officer | Disposed S | 3,963 | $61.62 | $244.19K | 1,266,064 | Direct |
| 10 Aug, 2026 | Paolo Tonucci | Officer | Disposed S | 455 | $62.22 | $28.31K | 1,265,609 | Direct |
| 13 Jul, 2026 | Ian T Lowitt | Chief Executive Officer | Disposed S | 27,398 | $64.19 | $1.76Mn | 2,803,960 | Direct |
| 13 Jul, 2026 | Paolo Tonucci | Officer | Disposed S | 11,850 | $64.22 | $761.06K | 1,287,093 | Direct |
| 13 Jul, 2026 | Ian T Lowitt | Chief Executive Officer | Disposed S | 8,957 | $64.90 | $581.32K | 2,795,003 | Direct |
| 13 Jul, 2026 | Paolo Tonucci | Officer | Disposed S | 4,584 | $64.85 | $297.27K | 1,282,509 | Direct |
| 13 Jul, 2026 | Paolo Tonucci | Officer | Disposed S | 232 | $65.73 | $15.25K | 1,282,277 | Direct |
| 13 Jul, 2026 | Ian T Lowitt | Chief Executive Officer | Disposed S | 787 | $65.84 | $51.82K | 2,794,216 | Direct |
| 12 Jun, 2026 | Ian T Lowitt | Chief Executive Officer | Disposed S | 32,813 | $62.29 | $2.04Mn | 2,835,688 | Direct |