Insider trading

Period: 120 months Stock: ACGL Role: Other officers × + Add filter Clear all
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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

34 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

34 decisions over 120 months Remove this filter
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

34 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

34 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
34 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
34 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

34 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
10 Mar 2026
Gansberg David President, Arch Capital Group
Sold at will
$569.27K 5,907 at 96.37
1.7%
Not planned
11 Feb 2026
Rajeh Maamoun President, Arch Capital Group
Sold at will
$4.56M 47,430 at 96.12
9.9%
Not planned
22 Aug 2025
Rajeh Maamoun PRESIDENT, ARCH CAPITAL GROUP
Sold at will
$941.46K 10,000 at 94.15
2.3%
Not planned
9 May 2025
PETRILLO LOUIS T OFFICER OF SUBSIDIARY
Sold at will
$1.57M 16,650 at 94.53
10.6%
Not planned
5 Mar 2025
PETRILLO LOUIS T OFFICER OF SUBSIDIARY
Sold at will
$1.06M 11,600 at 91.00
7.7%
Not planned
4 Mar 2025
PETRILLO LOUIS T OFFICER OF SUBSIDIARY
Sold at will
$871.70K 9,400 at 92.73
6.3%
Not planned
7 Mar 2024
Papadopoulo Nicolas OFFICER OF SUBSIDIARY
Sold at will
$5.25M 60,000 at 87.52
8.4%
Not planned
22 Nov 2023
Papadopoulo Nicolas OFFICER OF SUBSIDIARY
Sold at will
$5.15M 60,000 at 85.80
8.7%
Not planned
10 May 2023
PETRILLO LOUIS T OFFICER OF SUBSIDIARY
Sold at will
$1.18M 15,406 at 76.79
12.8%
Not planned
3 May 2023
Papadopoulo Nicolas OFFICER OF SUBSIDIARY
Sold at will
$5.28M 70,000 at 75.48
9.2%
Not planned
2 Mar 2023
Papadopoulo Nicolas OFFICER OF SUBSIDIARY
Sold, plan not stated
$2.10M 30,000 at 70.16
3.8%
4 Nov 2022
Papadopoulo Nicolas OFFICER OF SUBSIDIARY
Sold, plan not stated
no price 35,625 shares
4.4%
15 Aug 2022
PETRILLO LOUIS T OFFICER OF SUBSIDIARY
Sold, plan not stated
$356.51K 7,638 at 46.68
5.9%
11 Aug 2022
PETRILLO LOUIS T OFFICER OF SUBSIDIARY
Sold, plan not stated
$734.35K 16,023 at 45.83
13.2%
18 Nov 2021
PETRILLO LOUIS T Officer of Subsidiary
Sold, plan not stated
$527.84K 12,567 at 42.00
10.6%
27 May 2021
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$1.48M 37,500 at 39.51
8.1%
20 May 2021
PETRILLO LOUIS T Officer of Subsidiary
Sold, plan not stated
$1.22M 30,360 at 40.21
22.2%
14 May 2020
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$2.12M 100,000 at 21.20
20.7%
7 May 2020
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$2.43M 100,000 at 24.28
17.4%
24 Feb 2020
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$1.84M 40,000 at 45.96
6.5%
13 Feb 2020
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$1.88M 40,000 at 47.10
6.5%
19 Nov 2019
PETRILLO LOUIS T Officer of Subsidiary
Sold, plan not stated
$555.75K 13,349 at 41.63
11.0%
13 Aug 2019
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$986.74K 25,000 at 39.47
3.9%
16 May 2019
PETRILLO LOUIS T Officer of Subsidiary
Sold, plan not stated
$597.53K 17,339 at 34.46
13.9%
15 May 2019
PETRILLO LOUIS T Officer of Subsidiary
Sold, plan not stated
$225.87K 6,643 at 34.00
5.8%
14 Mar 2019
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$1.22M 37,500 at 32.55
6.0%
11 Mar 2019
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$81.00K 2,500 at 32.40
0.4%
14 Sep 2018
PETRILLO LOUIS T Officer of Subsidiary
Sold, plan not stated
$291.29K 9,573 at 30.43
7.6%
12 Sep 2018
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$450.00K 15,000 at 30.00
2.3%
13 Dec 2017
PETRILLO LOUIS T Officer of Subsidiary
Sold, plan not stated 2×
$539.21K 5,921 at 91.07
12.1%
9 Aug 2017
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$1.21M 12,500 at 96.81
6.6%
24 May 2017
PETRILLO LOUIS T Officer of Subsidiary
Sold, plan not stated
$284.00K 2,990 at 94.98
5.0%
28 Feb 2017
GRANDISSON MARC President & COO
Sold, plan not stated
$2.22M 23,446 at 94.54
3.8%
27 Feb 2017
Hutchings W Preston SVP & Chief Investment Officer · indirect
Sold, plan not stated
$751.28K 8,000 at 93.91
4.1%
Showing 1–34 of 34.