Marex MRX Insider Ownership

NASDAQ MRX

$71.38 +1.73 (+2.48%)

As of: Oct 20, 2026 · 10:52 AM EDT

Insider Holdings by Owner

6.18Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

8.71%

▲+0.016% pp QoQ

Shares Held by Insiders

6.21Mn

filed for Sep 2026

▲+0.19% QoQ

Shares Outstanding

71.35Mn

71,352,867 shares

Direct Holdings

6.21Mn

Indirect: 0

Net Shares Traded (QoQ)

+11.73K

net buying in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the trailing 12 months, MRX insiders sold $14.88 million worth of shares (250.21K shares) in open-market trades, with no open-market purchases.

By number of insiders, Marex saw 5 insiders sell on the open market over the past 12 months and none buy.
Paolo Tonucci (Officer) sold the most Marex stock on the open market over the past 12 months, $6.1 million (100K shares), most recently on September 14, 2026.
Away from the open market, MRX insiders received 219.58K shares in stock awards and gave up 279.57K shares to cover taxes or exercise prices over the last 12 months.
Per Business Quant data, Marex insiders hold 6.21Mn shares in total based on their latest Form 4 filings, up 0.19% from 6.2Mn shares at the end of Q2 2026.
All of the 6.21Mn shares held by Marex insiders are held directly, none through trusts, partnerships or other entities.
The insider holdings in Marex belong to 12 insiders who have reported on Form 4 within the past two years.
Marex's three largest insider shareholders, based on their latest Form 4 filings, are Ian T. Lowitt (Chief Executive Officer, 2.84Mn shares), Simon Van Den Born (President, 1.47Mn shares) and Paolo Tonucci (Officer, 1.27Mn shares).
Of the shares held by MRX insiders, 45.63% belong to Ian T. Lowitt.
Institutional investors owned 79.17% of MRX shares as of Q2 2026, per their 13F filings.
In the last 12 months, 38 Form 4 filings with transactions in MRX stock came from 12 insiders.
The insider data for MRX reflects Form 4 filings through September 16, 2026.

Form 4 Holdings

Insiders Holding MRX

Insiders 12

Shares held 6.18Mn

Of outstanding 8.66%

#	Insider	Position	Direct	Total	Share of Insiders	Last Filed
1	Ian T Lowitt	Chief Executive Officer	2,835,472	2,835,472	45.9%	09 Sep, 2026
2	Den Born Simon Van	President	1,455,076	1,455,076	23.5%	14 Oct, 2026
3	Paolo Tonucci	Officer	1,252,905	1,252,905	20.3%	14 Oct, 2026
4	Nilesh Jethwa	Ceo, Marex Solutions	282,950	282,950	4.6%	09 Sep, 2026
5	Thomas Texier	Group Head Of Clearing	207,019	207,019	3.3%	03 Jun, 2026
6	Robert Mark Pickering	Director	31,766	31,766	0.5%	11 Jun, 2026
7	Rob Irvin	Chief Financial Officer	31,046	31,046	0.5%	18 Aug, 2026
8	Konstantin Graf Von Schweinitz	Director	26,165	26,165	0.4%	11 Jun, 2026
9	John W. Pietrowicz	Director	23,771	23,771	0.4%	11 Jun, 2026
10	Linda Kristine Myers	Director	23,214	23,214	0.4%	11 Jun, 2026
11	Sarah Ing	Director	10,895	10,895	0.2%	11 Jun, 2026
12	Georges Assi	Director	2,070	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.

Form 4 Filings

62 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
12 Oct, 2026	Paolo Tonucci	Officer	Disposed S	15,506	$71.98	$1.12Mn	1,254,065	Direct
12 Oct, 2026	Den Born Simon Van	President	Disposed S	14,012	$71.99	$1.01Mn	1,456,336	Direct
12 Oct, 2026	Paolo Tonucci	Officer	Disposed S	1,160	$72.64	$84.26K	1,252,905	Direct
12 Oct, 2026	Den Born Simon Van	President	Disposed S	1,260	$72.63	$91.51K	1,455,076	Direct
14 Sep, 2026	Paolo Tonucci	Officer	Disposed S	13,714	$70.77	$970.53K	1,272,523	Direct
14 Sep, 2026	Den Born Simon Van	President	Disposed S	12,616	$70.77	$892.82K	1,473,003	Direct
14 Sep, 2026	Paolo Tonucci	Officer	Disposed S	2,952	$71.35	$210.64K	1,269,571	Direct
14 Sep, 2026	Den Born Simon Van	President	Disposed S	2,655	$71.36	$189.46K	1,470,348	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
07 Sep, 2026	Nilesh Jethwa	Ceo, Marex Solutions	Disposed F	31,567	$78.27	$2.47Mn	282,950	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
19 Aug, 2026	Paolo Tonucci	Officer	Acquired A	38,921	$0.00	$0	1,304,530	Direct
19 Aug, 2026	Den Born Simon Van	President	Acquired A	33,582	$0.00	$0	1,498,834	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

Showing 1 to 20 of 62 transactions