Christopher E. Mead - 05 Mar 2026 Form 4 Insider Report for Arthur J. Gallagher & Co. (AJG)

Role
VICE PRESIDENT
Signature
/s/ Monica Norzagaray, by power of attorney
Issuer symbol
AJG
Transactions as of
05 Mar 2026
Net transactions value
-$908,472
Form type
4
Filing time
09 Mar 2026, 19:34:42 UTC
Previous filing
06 Mar 2026
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/ Monica Norzagaray, by power of attorney 09 Mar 2026 0001737644

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AJG Common Stock Options Exercise +4,000 +21% $79.59* 23,306 05 Mar 2026 Direct
transaction AJG Common Stock Sale $908,472 -4,000 -17% $227.12 19,306 05 Mar 2026 Direct F1, F2
holding AJG Common Stock 491 05 Mar 2026 Gallagher 401(k) plan account

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
transaction AJG Non-qualified Stock Option Options Exercise -4,000 -100% $0.000000* 0 05 Mar 2026 Common Stock 4,000 $79.59 Direct F3
holding AJG Phantom Stock 21,804 05 Mar 2026 Common Stock 21,804 Direct F4, F5
holding AJG Non-qualified Stock Option 12,344 05 Mar 2026 Common Stock 12,344 $228.20 Direct F6
holding AJG Non-qualified Stock Option 11,090 05 Mar 2026 Common Stock 11,090 $86.17 Direct F3
holding AJG Non-qualified Stock Option 11,725 05 Mar 2026 Common Stock 11,725 $127.90 Direct F3
holding AJG Non-qualified Stock Option 8,420 05 Mar 2026 Common Stock 8,420 $158.56 Direct F3
holding AJG Non-qualified Stock Option 7,009 05 Mar 2026 Common Stock 7,009 $177.09 Direct F7
holding AJG Non-qualified Stock Option 7,368 05 Mar 2026 Common Stock 7,368 $243.54 Direct F8
holding AJG Non-qualified Stock Option 8,264 05 Mar 2026 Common Stock 8,264 $337.74 Direct F3, F9
holding AJG Notional Stock Units 1,983 05 Mar 2026 Common Stock 1,983 Direct F10, F11
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Exercise and sale of expiring stock options.
F2 The price reported is an average weighted price. The shares were sold in multiple transactions at prices ranging from $$227.050 - $227.580. The reporting person will provide to the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F3 One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F4 Each share of phantom stock represents a right to receive one share of Gallagher common stock.
F5 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.
F6 One-third of this stock option becomes exercisable 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 One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F9 Closing price of Gallagher common stock on February 28, 2025.
F10 Each notional stock unit represents a right to receive one share of Gallagher common stock.
F11 The notional stock units become payable following the reporting person's separation from service with Gallagher.