SEC Filing Summary

This filing details transactions of Christopher E. Mead, Vice President of Arthur J. Gallagher & Co., involving common stock and stock options. On March 15, 2026, performance share units earned and vested, resulting in the acquisition of 5,258 restricted common shares. These shares were subsequently used to cover tax obligations, reducing the holding to zero. Additionally, 5,258 common shares were acquired, increasing the post-transaction holdings to 24,563.7322 shares. A sale of 2,019 common shares occurred at $207.93 per share, followed by another sale of 432 shares at the same price on March 16, 2026. The filing also reports holdings of phantom stock, non-qualified stock options with various exercise prices and expiration dates, and notional stock units.