Transaction Details

Footnotes

The reporting person disclaims beneficial ownership of these shares, and this report shall not be deemed an admission that the reporting person is the beneficial owner of these shares for purposes of Section 16 or for any other purpose. | These shares are held in trusts, for the benefit of the reporting person's children, of which his wife is a trustee. | One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date. | One-third of this stock option becomes exerciseable 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. | 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 exercisable 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 and 2026 and following the reporting person's separation from service.