Company · Ownership research

ARCH CAPITAL GROUP LTD. ACGL

CIK 0000947484

Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 60 rows; the complete set is available through the API.

Insider filings on file run through 2026-08-20.

Insider purchases & sales

Purchased: $515.99K
Sold: $93.89M

Sep 1, 2023 – Aug 20, 2026
Available records · partial months are marked ·

202510 of 11 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2025-12-15	PASQUESI JOHN M Director · CHAIR	Sale	$828.68K 8,800 shares sold	2.95% sold Trust holding	▾
2025-12-12	PASQUESI JOHN M Director · CHAIR	Sale	$19.14M 203,866 shares sold	36.72% sold Trust holding	▾
2025-11-28	Morin Francois EVP AND CFO	Sale	$757.00K 8,000 shares sold	2.91% sold Direct holding	▾
2025-08-22	Rajeh Maamoun PRESIDENT, ARCH CAPITAL GROUP	Sale	$941.46K 10,000 shares sold	2.25% sold Direct holding	▾
2025-08-01	Posner Brian S Director	Purchase	$17.34K 1,000 shares bought	25.00% added Direct holding	▾
2025-05-16	Morin Francois EVP AND CFO	Sale	$1.19M 12,630 shares sold	4.40% sold Direct holding	▾
2025-05-13	PASQUESI JOHN M Director · CHAIR	Sale	$2.27M 23,996 shares sold	4.14% sold Trust holding	▾
2025-05-12	PASQUESI JOHN M Director · CHAIR	Sale	$7.06M 75,060 shares sold	11.47% sold Trust holding	▾
2025-05-09	PETRILLO LOUIS T OFFICER OF SUBSIDIARY	Sale	$1.57M 16,650 shares sold	10.63% sold Direct holding	▾
2025-03-05	PETRILLO LOUIS T OFFICER OF SUBSIDIARY	Sale	$1.06M 11,600 shares sold	7.65% sold Direct holding	▾

Showing 11 / 11 record groups in 2025. The complete set is available through the API.

ARCH CAPITAL GROUP LTD. · ACGL

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 11 of 11 purchase / sale groups and 30 of 60 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"ACGL","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.