Arch Capital (ACGL) insider buying and selling
Every Table I transaction reported by directors and officers of S&P 500 companies on SEC Form 4 filings (2 business days to file): each row labeled with its official transaction code, nothing filtered out beforehand.
Open-market purchases (code P) are the rare signal, in green; sales (code S) are common and often pre-scheduled (10b5-1). Table II (derivatives) is not included: its prices are exercise prices, not market values. Guide: insider buying.
| Date | Ticker | Insider | Role | Shares | Price | Amount | % of stake | Type / filing |
|---|
Download these transactions as CSV No account, no sign-up. The data is public: it comes from SEC Form 4 filings.
Arch Capital Group Ltd. (ACGL) insider buying and selling: 1 purchase, 11 sales
53 Form 4 Table I transactions filed with the SEC by Arch Capital Group Ltd. insiders between 2025-08-25 and 2026-08-20 (15-month history): 1 open-market purchase and 11 sales, plus 41 transactions under other Form 4 codes, broken down one by one below. The largest open-market trade is a sale of $19.1M by Pasquesi John M on 2025-12-12.
Arch Capital insider buying and selling over the last 12 months
Between Oct 21, 2025 and Oct 20, 2026, Arch Capital insiders filed 1 purchase worth $499k and 10 sales worth $29.2M on the open market. The net balance is on the sell side: $28.7M more sold than bought.
The biggest buyer was Houston Daniel Joseph (Director): $499k in 1 purchase, the only buyer. The biggest seller was Pasquesi John M (Director): $20.0M in 2 sales, out of 6 different sellers.
The largest trade of the period was a sale of $19.1M on Dec 12, 2025, by Pasquesi John M (Director). Form 4 on sec.gov (0001227099-25-000007).
None of the 10 sales carries the 10b5-1 plan flag on the Form 4 (sales scheduled months ahead).
The last three months show 0 purchases and 1 sale, against 1 and 2 in the three before. The latest purchase is from Apr 30, 2026; the latest sale from Aug 18, 2026.
Against its sector (Financial Services, 70 companies with an insider page on this site), over the same dates the median is 10 sales and 0 purchases on the open market. Arch Capital has more sales than 34 of the other 69, ranks 29 of 70 by net dollars sold, and 32 of the 70 have at least one purchase, Arch Capital included.
The 20 most important trades
The only open-market purchase first, then the rest, each type from largest to smallest. The full history is in the tool above, already searched.
See all 53 ACGL trades in the full history →
| Trade date | Filed | Insider | Role | Amount | Code | Filing |
|---|---|---|---|---|---|---|
| 2026-04-30 | 2026-05-04 | Houston Daniel Joseph | Director | $499k | P — Open-market purchaseForm 4 footnoteF1 The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $94.02 to $94.11. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission. | SEC |
| 2025-12-12 | 2025-12-16 | Pasquesi John M | Director | $19.1M | S — Open-market sale Indirect holding, through: By Trust 3 Form 4 footnotesF1 Represents a weighted average sale price; the sales prices ranged from $93.43 to $94.185. Upon request, the full sale information regarding the number of shares sold at each price increment will be provided to the Commission or a security holder of the issuer. F2 The common shares are held by a revocable trust. The reporting person and his spouse are the trustees and the beneficiaries. F3 Represents a weighted average sale price; the sales prices ranged from $93.76 to $94.08. Upon request, the full sale information regarding the number of shares sold at each price increment will be provided to the Commission or a security holder of the issuer. | SEC |
| 2026-02-11 | 2026-02-13 | Rajeh Maamoun | President, Arch Capital Group | $4.6M | S — Open-market saleForm 4 footnoteF1 The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $95.71 to $96.68. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission. | SEC |
| 2026-03-10 | 2026-03-12 | Papadopoulo Nicolas | CEO | $2.1M | S — Open-market saleForm 4 footnoteF1 The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $96.00 to $96.54. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission. | SEC |
| 2026-08-18 | 2026-08-20 | Morin Francois | CFO and Treasurer | $1.1M | S — Open-market sale2 Form 4 footnotesF1 The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $99.14 to $99.56. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission. F2 Amount includes 267 Common Shares acquired on May 29, 2026 under the Arch Capital Group Ltd. Employee Share Purchase Plan. | SEC |
| 2025-08-22 | 2025-08-25 | Rajeh Maamoun | PRESIDENT, ARCH CAPITAL GROUP | $941k | S — Open-market sale2 Form 4 footnotesF1 Represents a weighted average sale price; the sales prices range from $94.07 to $94.19. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission F2 Amount includes 248 common shares acquired on May 31, 2025 under the Arch Capital Group Ltd. Employee Share Purchase Plan. | SEC |
| 2025-12-15 | 2025-12-16 | Pasquesi John M | Director | $829k | S — Open-market sale Indirect holding, through: By Trust 2 Form 4 footnotesF4 Represents a weighted average sale price; the sales prices ranged from $93.92 to $94.46. Upon request, the full sale information regarding the number of shares sold at each price increment will be provided to the Commission or a security holder of the issuer. F2 The common shares are held by a revocable trust. The reporting person and his spouse are the trustees and the beneficiaries. | SEC |
| 2025-11-28 | 2025-12-02 | Morin Francois | EVP AND CFO | $757k | S — Open-market saleForm 4 footnoteF1 Represents a weighted average sale price; the sales prices range from $93.915 to $94.90. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission | SEC |
| 2026-03-10 | 2026-03-12 | Gansberg David | President, Arch Capital Group | $569k | S — Open-market saleForm 4 footnoteF1 The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $96.35 to $96.42. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission. | SEC |
| 2026-06-03 | 2026-06-04 | Posner Brian S | Director | $59k | S — Open-market sale2 Form 4 footnotesF1 Each Depositary Share Represents 1/1,000th interest in a Series F Non-Cumulative Preferred Share. F2 The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $19.57 to $19.80. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission. | SEC |
| 2026-03-11 | 2026-03-12 | Posner Brian S | Director | $51k | S — Open-market sale2 Form 4 footnotesF1 Each Depositary Share Represents 1/1,000th interest in a Series G Non-Cumulative Preferred Share. F2 The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $17.1149 to $17.1150. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission. | SEC |
| 2026-05-11 | 2026-05-12 | Posner Brian S | Director | $34k | S — Open-market sale2 Form 4 footnotesF1 Each Depositary Share Represents 1/1,000th interest in a Series G Non-Cumulative Preferred Share. F2 The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $17.14 to $17.17. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission. | SEC |
| 2026-02-11 | 2026-02-13 | Rajeh Maamoun | President, Arch Capital Group | $1.3M | M — Option exercise | SEC |
| 2026-03-04 | 2026-03-05 | Gansberg David | President, Arch Capital Group | $1.2M | F — Tax withholding (shares surrendered for taxes) | SEC |
| 2025-11-19 | 2025-11-20 | Gansberg David | President, Arch Capital Group | $866k | F — Tax withholding (shares surrendered for taxes) | SEC |
| 2026-03-04 | 2026-03-05 | Petrillo Louis T | Officer of Subsidiary | $790k | F — Tax withholding (shares surrendered for taxes) | SEC |
| 2026-03-10 | 2026-03-12 | Papadopoulo Nicolas | CEO | $414k | M — Option exercise | SEC |
| 2026-08-18 | 2026-08-20 | Morin Francois | CFO and Treasurer | $298k | M — Option exercise | SEC |
| 2026-03-10 | 2026-03-12 | Gansberg David | President, Arch Capital Group | $204k | M — Option exercise | SEC |
| 2026-02-27 | 2026-03-02 | Gansberg David | President, Arch Capital Group | $55k | F — Tax withholding (shares surrendered for taxes) | SEC |
The period balance: money in, money out
Across the Form 4 filings submitted between Aug 25, 2025 and Aug 20, 2026, Arch Capital Group Ltd. open-market activity adds up to 1 purchase worth $499k and 11 sales worth $30.1M. The net balance is $29.6M on the sell side.
Only codes P and S count, where an insider puts in or takes out their own money. A selling balance like Arch Capital Group Ltd.'s is the norm in the S&P 500, where much of the pay comes as stock. It is not a recommendation to buy or sell: it is what was filed.
Every transaction, code by code
| Code | What it means | Trades | Reported amount |
|---|---|---|---|
| A | Grant or award | 22 | $0 |
| S | Open-market sale | 11 | $30.1M |
| G | Gift | 8 | $0 |
| F | Tax withholding (shares surrendered for taxes) | 7 | $3.1M |
| M | Option exercise | 4 | $2.2M |
| P | Open-market purchase | 1 | $499k |
| Total | Everything filed in the period | 53 | $35.9M |
30 of the 53 rows carry no usable amount on the Form 4: they count as trades and add $0. The code labels come from the SEC index.
Who has traded
Over the 15 months of history, 17 distinct people or entities have filed Arch Capital Group Ltd. transactions: 1 bought on the open market and 6 sold. Counted by CIK, the fixed number the SEC gives each filer, and not by name, which each filer types their own way.
Of the 6 who sold on the open market (11 sales in all), the three biggest sellers account for $27.6M of the $30.1M: 91% of the money in three people.
| Filer | Role | Transactions | Bought (count) | Sold (count) | Last filed |
|---|---|---|---|---|---|
| Pasquesi John M | Director | 6 | — | $20.0M (2) | 2026-06-15 |
| Rajeh Maamoun | President, Arch Capital Group | 7 | — | $5.5M (2) | 2026-03-06 |
| Papadopoulo Nicolas | CEO | 4 | — | $2.1M (1) | 2026-03-12 |
| Morin Francois | CFO and Treasurer | 5 | — | $1.9M (2) | 2026-08-20 |
| Gansberg David | President, Arch Capital Group | 8 | — | $569k (1) | 2026-03-12 |
| Houston Daniel Joseph | Director | 2 | $499k (1) | — | 2026-05-07 |
| Posner Brian S | Director | 4 | — | $145k (3) | 2026-06-04 |
| Petrillo Louis T | Officer of Subsidiary | 7 | — | — | 2026-03-05 |
Shown here are the 8 who moved the most money, out of 17. The rest are in the full history, one link above. The name links to all their trades, in any company. "Transactions" counts any code; the money, open market only. Role: from their latest filing.
Month by month
By the month the trade was executed, not the month it was filed; months with no trades show zero. The busiest month was Mar 2026: 0 purchases and 3 sales, worth $2.7M. 6 of the 15 months have none.
| Month | Purchases | Amount | Sales | Amount |
|---|---|---|---|---|
| Aug 2025 | 0 | $0 | 1 | $941k |
| Sep 2025 | 0 | $0 | 0 | $0 |
| Oct 2025 | 0 | $0 | 0 | $0 |
| Nov 2025 | 0 | $0 | 1 | $757k |
| Dec 2025 | 0 | $0 | 2 | $20.0M |
| Jan 2026 | 0 | $0 | 0 | $0 |
| Feb 2026 | 0 | $0 | 1 | $4.6M |
| Mar 2026 | 0 | $0 | 3 | $2.7M |
| Apr 2026 | 1 | $499k | 0 | $0 |
| May 2026 | 0 | $0 | 1 | $34k |
| Jun 2026 | 0 | $0 | 1 | $59k |
| Jul 2026 | 0 | $0 | 0 | $0 |
| Aug 2026 | 0 | $0 | 1 | $1.1M |
| Sep 2026 | 0 | $0 | 0 | $0 |
| Oct 2026 | 0 | $0 | 0 | $0 |
The last month may be partial: a Form 4 is filed up to two business days later. The table does not say whether the pattern is good or bad; it says when it happened.
Arch Capital Group Ltd. (ACGL) analysis page →
Other Financial Services companies with insider trades
All 500 are listed in the section index →
Which insiders are buying their own company stock →
How to read this data
None of the 11 sales in the table is flagged as scheduled (10b5-1 plan), the kind signed months ahead and executed automatically. Arch Capital's single open-market purchase (code P) is the rare signal: insiders are already paid in stock, so buying more means putting in their own money. The latest filing is from Aug 20, 2026, and a Form 4 arrives up to two business days after the trade.
12 of the 20 rows in the table carry footnotes from the Form 4 itself, folded into the code column and copied verbatim; a row with no footnote means the filing has none.
Guide: Insider buying · all guides
What is behind these trades
The concepts on this page, explained from scratch in the Academy. Free, no account.
- What the efficiency hypothesis says and what it does NOT sayIf an insider's purchase is public and anyone can read it, is there any information left in it? That is the exact question that brings people here.
- Who really moves the market: the types of investorWho sits on the other side of each order, and where a company's own insiders fit among them.
- Supply, demand and price: why it rises and falls constantlyHow a piece of news ends up inside the price, and why the reaction to a filed sale is rarely the one you would expect.
Source: SEC EDGAR Form 4. This is a list of public facts, not financial advice or a recommendation to buy or sell.