MRX Marex (MRX) Insider Trading, Ownership & Congress Trades
Financial Services · Security & commodity brokers, dealers, exchanges & services · CIK 0001997464
Form 144 · 3
Insider buyers, 180 days
0
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
147
13F, latest reported quarter
What the filings say about MRX
Insiders, 180 days
-$14.4M net sold
5 sellers · 27% of sales under a 10b5-1 plan
Planned sales (Form 144), 90 days
$10.4M
3 notices
Marex insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, Marex Group Ltd insiders sold a net $14.4M of stock across 39 Form 4 purchases and sales, with no insider buying. Source: SEC Form 4 filings, as of 2026-10-28.
Foreign private issuer: most of its insiders are exempt from SEC Form 4, but some still file it; those filings are listed below, and the record may be incomplete.
Insider
Filed
Shares
Value
Since filing
Context
- 16 earlier Form 4 trades (code P or S) here by this insider (16 sales), the last on Sep 14, 2026.
- The trade is 1.2% of the 1,254,065 shares held after it.
- 1 other insider sold within 30 days.
- 147 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: See Remarks Tonucci Paolo sold about $1.1M of MRX under a 10b5-1 plan on Oct 12, 2026; 1 other insider sold within 30 days and 147 funds added in the latest 13F quarter.Context
- 16 earlier Form 4 trades (code P or S) here by this insider (16 sales), the last on Sep 14, 2026.
- The trade is 0.1% of the 1,252,905 shares held after it.
- 1 other insider sold within 30 days.
- 147 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: See Remarks Tonucci Paolo sold about $84.3K of MRX under a 10b5-1 plan on Oct 12, 2026; 1 other insider sold within 30 days and 147 funds added in the latest 13F quarter.Context
- 6 earlier Form 4 trades (code P or S) here by this insider (6 sales), the last on Sep 14, 2026.
- The trade is 1.0% of the 1,456,336 shares held after it.
- 1 other insider sold within 30 days.
- 147 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: President Van Den Born Simon sold about $1.0M of MRX under a 10b5-1 plan on Oct 12, 2026; 1 other insider sold within 30 days and 147 funds added in the latest 13F quarter.Context
- 6 earlier Form 4 trades (code P or S) here by this insider (6 sales), the last on Sep 14, 2026.
- The trade is 0.1% of the 1,455,076 shares held after it.
- 1 other insider sold within 30 days.
- 147 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: President Van Den Born Simon sold about $91.5K of MRX under a 10b5-1 plan on Oct 12, 2026; 1 other insider sold within 30 days and 147 funds added in the latest 13F quarter.Context
- 14 earlier Form 4 trades (code P or S) here by this insider (14 sales), the last on Aug 10, 2026.
- The trade is 1.1% of the 1,272,523 shares held after it.
- 1 other insider sold within 30 days.
- 147 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: See Remarks Tonucci Paolo sold about $970.5K of MRX under a 10b5-1 plan on Sep 14, 2026; 1 other insider sold within 30 days and 147 funds added in the latest 13F quarter.39 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
net -$14.4M over 180 days
-$5.8M over 90 days
below 84% of Financial Services
Congress
no House purchase disclosed in the last 12 months
Funds
147 funds bought in last quarter
more than 69% of Financial Services
Revenue
no revenue reported in any filing
Margin
no margin: no revenue reported
Buybacks
no share repurchases reported
Short interest
4.0% of the float short (float per yahoo 2026-10-26) · 3.5 days to cover · settled 2026-09-30
more than 63% of Financial Services
What changed in the last 30 days
Oct 14See Remarks Tonucci Paolo sold $1.2M under a 10b5-1 plan (Oct 12)
Why it matters
A 10b5-1 plan schedules trades months ahead, so this says little about what the insider thinks today.
Oct 14President Van Den Born Simon sold $1.1M under a 10b5-1 plan (Oct 12)
Why it matters
A 10b5-1 plan schedules trades months ahead, so this says little about what the insider thinks today.
Oct 13Officer Paolo Roberto Tonucci filed to sell $4.8M by Oct 12 (Form 144)
Why it matters
A Form 144 is a notice of intent to sell; the sale may not happen, and it says nothing about the price.
Watch MRX
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The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
+135.9%12M
Insider sellForm 144 (planned sale)
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns MRX: institutional holders (13F)
13F holdings, latest reported quarter
5,368,485 sh
$327.2M
4,594,149 sh
$280.0M
3,264,364 sh
$199.0M
2,600,436 sh
$115.9M
1,683,061 sh
$102.6M
Congress trades in MRX
No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.
Activist and 5% holders (13D/13G)
No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.
MRX planned insider sales (Form 144)
Notice of intent to sell, filed before any sale
Paolo Roberto Tonucci
Filed 2026-10-13
$4.8M
Simon Van Den Born
Filed 2026-09-14
$5.3M
Crispin Robert John Irvin
Filed 2026-08-14
$262.9K
Ian Lowitt
Filed 2026-07-13
$2.4M
MRX mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
GRANDEUR PEAK GLOBAL EXPLORER FUND
$442.0K position · as of 2026-07-31
2.8%
WESTWOOD QUALITY SMIDCAP FUND
$2.5M position · as of 2026-07-31
2.2%
Small Cap Dividend Fund
$2.4M position · as of 2026-06-30
2.2%
Financial Industries Trust
$2.8M position · as of 2026-06-30
2.2%
Nuveen Small Cap Value Opportunities Fund
$6.8M position · as of 2026-06-30
2.2%
GRANDEUR PEAK US STALWARTS FUND
$360.3K position · as of 2026-07-31
2.1%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders have filed to sell, before selling.
The record shows a net $14.4M sold by insiders over 180 days, 147 funds added last quarter, $10.4M in planned Form 144 sales. Each figure is a federal filing, dated the day it went public.
MRX financials
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
| 2025-12 | 2024-12 | 2023-12 | 2022-12 | |
|---|---|---|---|---|
| Net income | $307.7M | $218.0M | $141.3M | $98.2M |
SEC XBRL, fiscal years, as known on 2026-10-28
MRX Stock Sonar score 3/7 axes
Find similar shapesCompareMRX ranks highest on institutional and government (69th percentile) and risk and compliance (47th), and lowest on insider conviction (9th), among Financial Services peers.
3 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
MRX filings, in plain words
Are Marex insiders buying or selling MRX?
In the 180 days to 2026-10-28, Marex insiders were net sellers, a net $14.4M across purchases and sales reported on Form 4, by 5 sellers.
Are there planned insider sales of MRX?
Yes. 3 Form 144 notices of planned insider sales were filed in the 90 days to 2026-10-28, covering $10.4M of stock; the latest, by Paolo Roberto Tonucci, was filed 2026-10-13.
Read the full summary
In the 180 days to 2026-10-28, Marex insiders were net sellers of MRX, a net $14.4M across purchases and sales reported on Form 4 by 5 sellers. 27% of the 30 insider sales were made under a Rule 10b5-1 plan; the rest were not flagged as planned. Insiders filed 3 Form 144 notices of intent to sell in the 90 days to 2026-10-28, covering $10.4M of stock. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.
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