Arch Capital Group Ltd. (ACGLO) has 20 known insider and institutional holders on record. The largest holder is H&F CORP INVESTORS IV BERMUDA LTD with 4,674,022 shares. Other notable holders include WARBURG PINCUS LLC and GRANDISSON MARC.
Over the last 12 months, insiders have made 45 transactions in ACGLO stock — 23 buys (valued at $16.18M) and 6 sells (valued at $11.91M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
ACGLO Insider Ownership
Top Holder
H&F CORP INVESTORS IV BERMUDA LTD
4,674,022 shares
Buys (12 mo)
23
$16.18M value
Sells (12 mo)
6
$11.91M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
H&f Corp Investors Iv Bermuda Ltd |
10 Percent Owner |
4,674,022 |
2006-11-30 |
|
| 2 |
Warburg Pincus Llc |
10 Percent Owner |
3,989,150 |
2008-10-31 |
|
| 3 |
Grandisson Marc |
CEO |
2,040,185 |
2023-11-07 |
|
| 4 |
Bunce John L Jr |
Director |
1,558,321 |
2025-05-09 |
|
| 5 |
Pasquesi John M |
Other: Chair |
298,356 |
2025-12-16 |
|
| 6 |
Vollaro John D |
Director |
192,807 |
2025-11-03 |
|
| 7 |
Iordanou Constantine |
Chairman, President & CEO |
192,760 |
2010-06-18 |
|
| 8 |
Lee Kewsong |
Director |
151,198 |
2010-05-07 |
|
| 9 |
Doppstadt Eric |
Director |
77,779 |
2023-05-08 |
|
| 10 |
Papadopoulo Nicolas |
CEO |
76,243 |
2026-03-05 |
|
| 11 |
Carney Sean |
Director |
67,019 |
2010-05-07 |
|
| 12 |
Lyons Mark Donald |
Chairman & CEO Arch Insur Gr |
54,903 |
2010-07-29 |
|
| 13 |
Paglia Louis J |
Director |
54,056 |
2023-05-08 |
|
| 14 |
Rajeh Maamoun |
President, Arch Capital Group |
40,600 |
2026-03-06 |
|
| 15 |
Goodman Laurie |
Director |
35,502 |
2025-05-09 |
|
| 16 |
Sunshine Eugene S |
Director |
31,361 |
2023-05-08 |
|
| 17 |
Kilcoyne Moira A. |
Director |
31,096 |
2025-05-09 |
|
| 18 |
Gansberg David |
President, Arch Capital Group |
24,475 |
2026-03-05 |
|
| 19 |
Watjen Thomas R |
Director |
23,671 |
2023-05-08 |
|
| 20 |
Tunnell David R |
Director |
21,132 |
2006-05-05 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-10 |
Gansberg David |
President, Arch Capital Group |
Option Exercise (Sell) |
10,770 |
$18.90 |
$203.55K |
| 2026-03-11 |
Posner Brian S |
Director |
Informative Sell |
3,000 |
$17.12 |
$51.35K |
| 2026-03-10 |
Papadopoulo Nicolas |
CEO |
Option Exercise (Sell) |
21,930 |
$18.90 |
$414.48K |
| 2026-03-04 |
Rajeh Maamoun |
President, Arch Capital Group |
Gift (Received) |
40,600 |
- |
- |
| 2026-03-03 |
Todd Christine |
Chief Investment Officer |
RSU Award |
6,305 |
$100.48 |
$633.53K |
| 2026-03-04 |
Gansberg David |
President, Arch Capital Group |
Tax Withholding of RSU |
12,519 |
$98.42 |
$1.23M |
| 2026-03-03 |
Gansberg David |
President, Arch Capital Group |
RSU Award |
24,475 |
$100.48 |
$2.46M |
| 2026-03-03 |
Morin Francois |
CFO and Treasurer |
RSU Award |
19,061 |
$100.48 |
$1.92M |
| 2026-03-03 |
Rajeh Maamoun |
President, Arch Capital Group |
RSU Award |
24,475 |
$100.48 |
$2.46M |
| 2026-03-03 |
Papadopoulo Nicolas |
CEO |
RSU Award |
76,243 |
$100.48 |
$7.66M |
| 2026-03-04 |
Petrillo Louis T |
Officer of Subsidiary |
Tax Withholding of RSU |
8,030 |
$98.42 |
$790.31K |
| 2026-03-03 |
Petrillo Louis T |
Officer of Subsidiary |
RSU Award |
10,331 |
$100.48 |
$1.04M |
| 2026-02-27 |
Gansberg David |
President, Arch Capital Group |
Tax Withholding of RSU |
553 |
$100.15 |
$55.38K |
| 2026-02-27 |
Petrillo Louis T |
Officer of Subsidiary |
Tax Withholding of RSU |
312 |
$100.15 |
$31.25K |
| 2026-02-24 |
Todd Christine |
Chief Investment Officer |
RSU Award |
25,046 |
- |
- |
| 2026-02-24 |
Gansberg David |
President, Arch Capital Group |
Tax Withholding of RSU |
509 |
$99.18 |
$50.48K |
| 2026-02-24 |
Morin Francois |
CFO and Treasurer |
RSU Award |
27,432 |
- |
- |
| 2026-02-24 |
Rajeh Maamoun |
President, Arch Capital Group |
RSU Award |
28,546 |
- |
- |
| 2026-02-24 |
Papadopoulo Nicolas |
CEO |
RSU Award |
46,674 |
- |
- |
| 2026-02-24 |
Petrillo Louis T |
Officer of Subsidiary |
Tax Withholding of RSU |
412 |
$99.18 |
$40.86K |
| 2026-02-11 |
Rajeh Maamoun |
President, Arch Capital Group |
Option Exercise (Sell) |
15,930 |
$27.09 |
$431.49K |
| 2025-12-15 |
Pasquesi John M |
Other: Chair |
Informative Sell |
8,800 |
$94.17 |
$828.68K |
| 2025-12-12 |
Pasquesi John M |
Other: Chair |
Gift (Given) |
53,000 |
- |
- |
| 2025-12-10 |
Petrillo Louis T |
Officer of Subsidiary |
Gift (Received) |
14 |
- |
- |
| 2025-11-28 |
Morin Francois |
EVP and CFO |
Informative Sell |
8,000 |
$94.62 |
$757K |
