ACGL insider buying – Arch Capital Group Ltd.
13 insider purchases since 2016 worth $21.9M by 5 different insiders. Last 12 months: 1 purchases, $498,677. Most recent filing: 2026-05-04.
Large company Public float $33.0B (latest 10-K, SEC).
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits. 8 older purchases (before the 5-year window) are listed in the table below.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| PASQUESI JOHN M Director | $20.0M 1× · 484,544 sh | 2021-11-11 2021-11-11 | 4× · $41.3M last 2025-12-12 | 4,861,584 shares as of 2026-06-15 | Sold part |
| Posner Brian S Director | $585,215 9× · 19,500 sh | 2016-11-18 2025-08-01 | 3× · $211,300 last 2026-06-03 | 0 shares as of 2026-06-04 | Sold everything |
| GRANDISSON MARC CEO | $575,750 1× · 23,500 sh | 2020-05-18 2020-05-18 | 7× · $57.0M last 2023-11-03 | 2,212,941 shares as of 2024-02-29 | Sold part |
| Houston Daniel Joseph Director | $498,677 1× · 5,300 sh | 2026-04-30 2026-04-30 | – | 13,313 shares as of 2026-05-07 | Holds - never sold |
| IORDANOU CONSTANTINE CEO | $238,000 1× · 10,000 sh | 2018-02-15 2018-02-15 | 8× · $34.0M last 2017-08-02 | 1,175,689 shares as of 2019-09-13 | Holds (sold earlier) |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 1 | $498,677 | 1 | 7 | $13.7M |
| 2025 | 1 | $17,340 | 1 | 8 | $36.4M |
| 2024 | 0 | – | – | 5 | $14.0M |
| 2023 | 0 | – | – | 12 | $68.9M |
| 2022 | 2 | $73,660 | 1 | 5 | $5.9M |
| 2021 | 1 | $20.0M | 1 | 10 | $7.7M |
| 2020 | 3 | $621,630 | 2 | 5 | $8.6M |
| 2019 | 0 | – | – | 19 | $26.0M |
| 2018 | 4 | $555,055 | 2 | 11 | $4.1M |
| 2017 | 0 | – | – | 26 | $54.4M |
| 2016 | 1 | $131,280 | 1 | 18 | $23.7M |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-04 | Houston Daniel Joseph | Director | 5,300 | $94.09 | $498,677 | +114.8% | SEC |
| 2025-08-04 | Posner Brian S | Director | 1,000 | $17.34 | $17,340 | +25.0% | SEC |
| 2022-11-01 | Posner Brian S | Director | 2,000 | $17.60 | $35,200 | +100.0% | SEC |
| 2022-05-02 | Posner Brian S | Director | 2,000 | $19.23 | $38,460 | SEC | |
| 2021-11-12 | PASQUESI JOHN M | Director | 484,544 | $41.23 | $20.0M | +42.1% | SEC |
| 2020-05-20 | GRANDISSON MARC | CEO | 23,500 | $24.50 | $575,750 | +1.3% | SEC |
| 2020-05-15 | Posner Brian S | Director | 1,000 | $22.16 | $22,160 | +1.0% | SEC |
| 2020-05-08 | Posner Brian S | Director | 1,000 | $23.72 | $23,720 | +1.1% | SEC |
| 2018-11-29 | Posner Brian S | Director | 1,000 | $25.05 | $25,050 | +1.2% | SEC |
| 2018-11-06 | Posner Brian S | Director | 2,500 | $22.45 | $56,125 | SEC | |
| 2018-05-04 | Posner Brian S | Director | 3,000 | $78.63 | $235,880 | +13.4% | SEC |
| 2018-02-20 | IORDANOU CONSTANTINE | CEO | 10,000 | $23.80 | $238,000 | SEC | |
| 2016-11-21 | Posner Brian S | Director | 6,000 | $21.88 | $131,280 | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2026-11-13 | Rajeh Maamoun | President, Arch Capital Group | -48,661 | $108.54 | $5.3M | Sale | SEC |
| 2026-08-20 | Morin Francois | CFO | 11,010 | $99.32 | $1.1M | Sale | SEC |
| 2026-06-04 | Posner Brian S | Director | 3,000 | $19.66 | $58,980 | Sale | SEC |
| 2026-03-12 | Posner Brian S | Director | 3,000 | $17.12 | $51,360 | Sale | SEC |
| 2026-03-12 | Papadopoulo Nicolas | CEO | 21,930 | $96.31 | $2.1M | Sale | SEC |
| 2026-03-12 | Gansberg David | CEO | 5,907 | $96.37 | $569,258 | Sale | SEC |
| 2026-02-13 | Rajeh Maamoun | CEO | 47,430 | $96.12 | $4.6M | Sale | SEC |
| 2025-12-16 | PASQUESI JOHN M | Director | 212,666 | $93.91 | $20.0M | Sale | SEC |
| 2025-12-02 | Morin Francois | CFO | 8,000 | $94.62 | $756,960 | Sale | SEC |
| 2025-08-25 | Rajeh Maamoun | CEO | 10,000 | $94.15 | $941,500 | Sale | SEC |
| 2025-05-20 | Morin Francois | CFO | 12,630 | $94.58 | $1.2M | Sale | SEC |
| 2025-05-14 | PASQUESI JOHN M | Director | 99,056 | $94.18 | $9.3M | Sale | SEC |
| 2025-05-12 | PETRILLO LOUIS T | Officer | 16,650 | $94.53 | $1.6M | Sale | SEC |
| 2025-05-06 | Papadopoulo Nicolas | CEO | 7,636 | $92.48 | $706,177 | Sale | SEC |
| 2025-03-06 | PETRILLO LOUIS T | Officer | 21,000 | $91.77 | $1.9M | Sale | SEC |
Showing the latest 15 of 126 sales of $50,000+ since 2016.
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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