Company / CIK 0000947484
ARCH CAPITAL GROUP LTD.
- Ticker
- ACGL
- Size, estimated from filings
- Mid cap ($2B – $10B)
- Insiders on file
- 8
- Members of Congress who traded it
- 1
- Federal contracts on record
- none matched
- Lobbying filings on record
- none matched
- SEC filings
- EDGAR ↗
- Latest trade on record
- August 18, 2026
ARCH CAPITAL GROUP LTD. (ACGL) has 8 insiders on file who disclosed 16 transactions in the last 12 months (0 open-market buys, 3 sales, about $1.5M at reported prices), and 1 congressional trade in its stock is on record. No federal contract award that started in the last 180 days was found for a recipient with exactly this name; no lobbying filing names it as client this year.
ARCH CAPITAL GROUP LTD. in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
3 people account for the disclosed buying and selling in ARCH CAPITAL GROUP LTD. over the last 12 months; the most active is Morin Francois with $1.1M.
Insiders
| Name | Role | Rows | Bought | Sold | Last filed |
|---|---|---|---|---|---|
| Morin Francois | CFO and Treasurer | 3 | 0 | 1 | August 20, 2026 |
| PASQUESI JOHN M | Director | 2 | 0 | 0 | June 15, 2026 |
| Posner Brian S | Director | 3 | 0 | 2 | June 4, 2026 |
| Triplett Neal F | Director | 2 | 0 | 0 | May 7, 2026 |
| MOCZARSKI ALEXANDER S | Director | 1 | 0 | 0 | May 7, 2026 |
| MALLESCH EILEEN A | Director | 1 | 0 | 0 | May 7, 2026 |
| KILCOYNE MOIRA A. | Director | 2 | 0 | 0 | May 7, 2026 |
| Houston Daniel Joseph | Director | 2 | 0 | 0 | May 7, 2026 |
Rows are this company's Form 4 rows for each person. "Bought" and "sold" count open-market purchases (code P) and sales only. More in insider buying and insider selling.
Members of Congress who traded ACGL
From periodic transaction reports that name the company's stock. Amounts are the sums of the ranges as filed. Every row is on the ACGL page.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| Alan Armstrong | Senator (OK), Republican | 1 | 1 | 0 | $1,001–$15K | March 27, 2026 |
Insider transactions
| Filer | Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Morin Francois | ACGL | Option / conversion M | August 18, 2026 | August 20, 2026 | 2d | 11,010 | — | — | derivative | Form 4 ↗ | |
| Morin Francois | ACGL | Sell S | August 18, 2026 | August 20, 2026 | 2d | 11,010 | $99 | $1.1M | Form 4 ↗ | ||
| Morin Francois | ACGL | Option / conversion M | August 18, 2026 | August 20, 2026 | 2d | 11,010 | $27 | $298K | Form 4 ↗ | ||
| PASQUESI JOHN M | ACGL | Other G | June 11, 2026 | June 15, 2026 | 4d | 1,006,700 | — | — | indirect | Form 4 ↗ | |
| PASQUESI JOHN M | ACGL | Other G | June 11, 2026 | June 15, 2026 | 4d | 1,006,700 | — | — | indirect | Form 4 ↗ | |
| Posner Brian S | ACGL | Sell S | June 3, 2026 | June 4, 2026 | 1d | 3,000 | $20 | $59K | Form 4 ↗ | ||
| Posner Brian S | ACGL | Sell S | May 11, 2026 | May 12, 2026 | 1d | 2,000 | $17 | $34K | Form 4 ↗ | ||
| Houston Daniel Joseph | ACGL | Other A | May 5, 2026 | May 7, 2026 | 2d | 1,327 | — | — | Form 4 ↗ | ||
| Houston Daniel Joseph | ACGL | Other A | May 5, 2026 | May 7, 2026 | 2d | 2,071 | — | — | Form 4 ↗ | ||
| KILCOYNE MOIRA A. | ACGL | Other A | May 5, 2026 | May 7, 2026 | 2d | 1,327 | — | — | Form 4 ↗ | ||
| KILCOYNE MOIRA A. | ACGL | Other A | May 5, 2026 | May 7, 2026 | 2d | 2,071 | — | — | Form 4 ↗ | ||
| MALLESCH EILEEN A | ACGL | Other A | May 5, 2026 | May 7, 2026 | 2d | 2,071 | — | — | Form 4 ↗ | ||
| MOCZARSKI ALEXANDER S | ACGL | Other A | May 5, 2026 | May 7, 2026 | 2d | 2,071 | — | — | Form 4 ↗ | ||
| Posner Brian S | ACGL | Other A | May 5, 2026 | May 7, 2026 | 2d | 2,071 | — | — | Form 4 ↗ | ||
| Triplett Neal F | ACGL | Other A | May 5, 2026 | May 7, 2026 | 2d | 1,327 | — | — | Form 4 ↗ | ||
| Triplett Neal F | ACGL | Other A | May 5, 2026 | May 7, 2026 | 2d | 2,071 | — | — | Form 4 ↗ |
Federal contracts (USAspending, awards started in the last 180 days)
No contract award starting in the last 180 days was found for a recipient named exactly "ARCH CAPITAL GROUP LTD.". Subsidiaries and differently-spelled recipients are not matched — search contracts.
Lobbying (Senate LDA, as client)
No LDA filing posted since October 2025 names "ARCH CAPITAL GROUP LTD." as the client. Filings under a subsidiary or trade-association name are not matched — search lobbying.
Related companies
Companies whose stock was traded by the same people who traded ACGL, by number of filers in common. It shows overlap in public filings and nothing else.
- Dell Technologies Inc. DELL 1 filer in common
- CrowdStrike Holdings, Inc. CRWD 1 filer in common
- Seagate Technology Holdings plc STX 1 filer in common
- Uber Technologies, Inc UBER 1 filer in common
- Datadog, Inc. DDOG 1 filer in common
- HERSHEY CO HSY 1 filer in common
- Arista Networks, Inc. ANET 1 filer in common
- AppLovin Corp APP 1 filer in common
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| Senate eFD, periodic transaction reports | 1 | 1 | July 21, 2026 | July 21, 2026 | Senate eFD search |
| SEC EDGAR, Form 4 | 10 | 16 | May 7, 2026 | August 20, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insiders and their transactions come from SEC EDGAR Form 4 filings for this issuer. Contracts and lobbying are matched by exact normalized name (suffixes like Inc./Corp. ignored) to USAspending recipients and LDA clients — a conservative match that misses subsidiaries on purpose. See methodology and corrections.
Not investment advice. Public records shown as filed; no recommendation is made or implied.