Transaction Details

Footnotes

Shares withheld to cover applicable tax obligations and the exercise price relating to the exercise of expiring stock options. | Shares held in irrevocable trust, of which his spouse is sole Trustee. | Grant date of 3/14/2019. | One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date. | Each share of phantom stock represents a right to receive one share of Gallagher common stock. | These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61. | Grant date of 3/12/2020. | Grant date of 3/16/2021. | Grant date of 3/15/2022. | Grant date of 3/15/2023. | One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date. | Closing price of Gallagher common stock on February 28, 2025. | One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date. | Each notional stock unit represents a right to receive one share of Gallagher common stock. | Portions of these notional stock units are payable to the reporting person in shares of common stock in July of 2025, 2026, 2027 and 2028 and following the reporting person's separation from service. | Portions of these notional stock units are payable to the reporting person in shares of common stock in July of 2025, 2026, 2027 and 2028 and following the reporting person's separation from service.