Insider Trading

Brian S Posner Net Worth

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Last Updated: 12 hours ago

Brian S Posner has an estimated net worth of at least $11.0 million*, as of yesterday. They own 120,104 shares of ACGL stock. They have sold 8,360 shares of ACGL stock since 2021, for an estimated $128,292.

Brian S Posner $ACGL SEC Form 4 Insider Trading

Brian S Posner has filed a total of 4 insider trades in $ACGL since 2021. Their most recent trade was a purchase of 2,000 shares, made on Oct 28, 2022. Their largest trade was a sale of 4,000 shares, made on Jun 14, 2021. We estimate that they now own 120,104 shares of $ACGL, worth an estimated $10.9 million.



Insider Trading at $ACGL

There have been a total of 49 insider trades reported at $ACGL since 2021, with 488,544 shares purchased and 2.0 million shares sold. The most active insider traders in $ACGL stock have been Francois Morin, Louis T Petrillo, and Maamoun Rajeh. The most recent trade was a sale of 12,630 shares reported by Francois Morin (EVP AND CFO), made on May 16, 2025.



History of Insider Stock Trades by Brian S Posner

Company Ticker Purchase / Sale Shares Date Disclosed (EST)
ACGL logo ACGL Purchase 2,000 Oct 28, 2022 Nov. 1, 2022, 6:39 p.m.
ACGL logo ACGL Purchase 2,000 Apr 29, 2022 May 2, 2022, 5:35 p.m.
ACGL logo ACGL Sale 4,000 Jun 14, 2021 June 14, 2021, 8 p.m.
ACGL logo ACGL Sale 4,000 Jun 14, 2021 June 14, 2021, 8 p.m.
BIIB logo BIIB Sale 360 Jun 04, 2021 June 6, 2021, 8 p.m.




$ACGL Executives and Stock Owners with Insider Trades



*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.