Louis T. Petrillo, an officer at a subsidiary company, has demonstrated a clear selling bias in his trading activity involving shares of Arch Capital Group Ltd. (ACGL), the only company in which he has reported transactions. Over 27 reported trades, his total sales amount to $5.07 million, dwarfing his total purchases of $332,535. The most recent transactions, filed in early March 2026, include a sale valued at $790,312 on March 4, following a smaller sale of $31,246 on February 27. This follows a pattern of concentrated selling in March of previous years, including a $1.13 million sale on March 4, 2024, and multiple transactions in March 2025 totaling over $1.05 million and $871,697 respectively.
Petrillo’s transactions are frequently clustered around late February and early March, suggesting a possible recurring pattern tied to vesting schedules, tax planning, or other periodic events. While some filings show acquisitions (coded "A") with no reported value—likely representing grants or awards—the bulk of his activity involves dispositions (coded "S" and "F"). The absence of any recent buys reinforces the trend of net divestment. Given the consistency in timing and direction, Petrillo’s trading history reflects a long-term reduction in his ACGL holdings rather than short-term speculation. The transactions, spanning multiple years, indicate a deliberate and sustained approach to liquidating his position in the company.
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