Michael Robert Pesch - 16 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
16 Mar 2026
Net transactions value
$0
Form type
4
Filing time
18 Mar 2026, 20:30:25 UTC
Previous filing
09 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Pesch Michael Robert Vice President 2850 GOLF ROAD, ROLLING MEADOWS /s/ Monica Norzagaray, by power of attorney 18 Mar 2026 0002022545

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AJG Common Stock Tax liability -525 -1.2% $207.93* 44,379 16 Mar 2026 Direct F1
holding AJG Common Stock 59 16 Mar 2026 By Child
holding AJG Common Stock 12,505 16 Mar 2026 By Spouse's Trust F2
holding AJG Common Stock 491 16 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
holding AJG Phantom Stock 49,197 16 Mar 2026 Common Stock 49,197 Direct F3, F4
holding AJG Non-qualified Stock Option 13,167 16 Mar 2026 Common Stock 13,167 $228.20 Direct F5
holding AJG Non-qualified Stock Option 7,520 16 Mar 2026 Common Stock 7,520 $86.17 Direct F6, F7
holding AJG Non-qualified Stock Option 7,255 16 Mar 2026 Common Stock 7,255 $127.90 Direct F7, F8
holding AJG Non-qualified Stock Option 7,052 16 Mar 2026 Common Stock 7,052 $337.74 Direct F9, F10
holding AJG Notional Stock Units 5,315 16 Mar 2026 Common Stock 5,315 $0.000000 Direct F11, F12, F13
holding AJG Non-qualified Stock Option 4,900 16 Mar 2026 Common Stock 4,900 $158.56 Direct F7, F14
holding AJG Non-qualified Stock Option 3,823 16 Mar 2026 Common Stock 3,823 $177.09 Direct F7, F15
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares withheld to cover applicable tax obligations relating to the vesting of restricted stock units.
F2 Shares held in irrevocable trust, of which his spouse is sole Trustee.
F3 Each share of phantom stock represents a right to receive one share of Gallagher common stock.
F4 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.
F5 One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F6 Grant date of 3/12/2020.
F7 One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F8 Grant date of 3/16/2021.
F9 Closing price of Gallagher common stock on February 28, 2025.
F10 One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F11 Each notional stock unit represents a right to receive one share of Gallagher common stock.
F12 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.
F13 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.
F14 Grant date of 3/15/2022.
F15 Grant date of 3/15/2023.