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

Role
VICE PRESIDENT
Signature
/s/ Seth Diehl, by power of attorney
Issuer symbol
AJG
Transactions as of
21 Nov 2025
Net transactions value
-$313,425
Form type
4
Filing time
25 Nov 2025, 17:09:44 UTC
Previous filing
18 Mar 2025
Next filing
29 Dec 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 25 Nov 2025 0001737644

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AJG Common Stock Sale $313,425 -1,250 -6.7% $250.74 17,327 21 Nov 2025 Direct
holding AJG Common Stock 419 21 Nov 2025 Gallagher 401(k) plan account
holding AJG Common Stock (restricted) 2,367 21 Nov 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 20,126 21 Nov 2025 Common Stock 20,126 Direct F1, F2
holding AJG Non-qualified Stock Option 0 21 Nov 2025 Common Stock 0 $55.94 Direct F3, F4
holding AJG Non-qualified Stock Option 0 21 Nov 2025 Common Stock 0 $70.74 Direct F4, F5
holding AJG Non-qualified Stock Option 8,000 21 Nov 2025 Common Stock 8,000 $79.59 Direct F4
holding AJG Non-qualified Stock Option 11,090 21 Nov 2025 Common Stock 11,090 $86.17 Direct F4
holding AJG Non-qualified Stock Option 11,725 21 Nov 2025 Common Stock 11,725 $127.90 Direct F4
holding AJG Non-qualified Stock Option 8,420 21 Nov 2025 Common Stock 8,420 $158.56 Direct F4
holding AJG Non-qualified Stock Option 7,009 21 Nov 2025 Common Stock 7,009 $177.09 Direct F6
holding AJG Non-qualified Stock Option 7,368 21 Nov 2025 Common Stock 7,368 $243.54 Direct F7
holding AJG Non-qualified Stock Option 8,264 21 Nov 2025 Common Stock 8,264 $337.74 Direct F4, F8
holding AJG Notional Stock Units 1,585 21 Nov 2025 Common Stock 1,585 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.