Christopher E. Mead - Nov 21, 2025 Form 4 Insider Report for Arthur J. Gallagher & Co. (AJG)

Role
VICE PRESIDENT
Signature
/s/ Seth Diehl, by power of attorney
Stock symbol
AJG
Transactions as of
Nov 21, 2025
Transactions value $
-$313,425
Form type
4
Date filed
11/25/2025, 05:09 PM
Previous filing
Mar 18, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Mead Christopher E VICE PRESIDENT 2850 GOLF ROAD, ROLLING MEADOWS /s/ Seth Diehl, by power of attorney 2025-11-25 0001737644

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AJG Common Stock Sale -$313K -1.25K -6.73% $250.74 17.3K Nov 21, 2025 Direct
holding AJG Common Stock 419 Nov 21, 2025 Gallagher 401(k) plan account
holding AJG Common Stock (restricted) 2.37K Nov 21, 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding AJG Phantom Stock 20.1K Nov 21, 2025 Common Stock 20.1K Direct F1, F2
holding AJG Non-qualified Stock Option 0 Nov 21, 2025 Common Stock 0 $55.94 Direct F3, F4
holding AJG Non-qualified Stock Option 0 Nov 21, 2025 Common Stock 0 $70.74 Direct F4, F5
holding AJG Non-qualified Stock Option 8K Nov 21, 2025 Common Stock 8K $79.59 Direct F4
holding AJG Non-qualified Stock Option 11.1K Nov 21, 2025 Common Stock 11.1K $86.17 Direct F4
holding AJG Non-qualified Stock Option 11.7K Nov 21, 2025 Common Stock 11.7K $127.90 Direct F4
holding AJG Non-qualified Stock Option 8.42K Nov 21, 2025 Common Stock 8.42K $158.56 Direct F4
holding AJG Non-qualified Stock Option 7.01K Nov 21, 2025 Common Stock 7.01K $177.09 Direct F6
holding AJG Non-qualified Stock Option 7.37K Nov 21, 2025 Common Stock 7.37K $243.54 Direct F7
holding AJG Non-qualified Stock Option 8.26K Nov 21, 2025 Common Stock 8.26K $337.74 Direct F4, F8
holding AJG Notional Stock Units 1.58K Nov 21, 2025 Common Stock 1.58K Direct F9, F10
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each share of phantom stock represents a right to receive one share of Gallagher common stock.
F2 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.
F3 Granted on May 1, 2017.
F4 One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F5 Granted on March 15, 2018.
F6 One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F7 One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F8 Closing price of Gallagher common stock on February 28, 2025.
F9 Each notional stock unit represents a right to receive one share of Gallagher common stock.
F10 The notional stock units become payable following the reporting person's separation from service with Gallagher.