Michael Robert Pesch - 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
$0
Form type
4
Filing time
09 Mar 2026, 19:31:51 UTC
Previous filing
06 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 09 Mar 2026 0002022545

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AJG Common Stock Options Exercise +6,750 +16% $79.59* 48,599 05 Mar 2026 Direct
transaction AJG Common Stock Tax liability -3,733 -7.7% $228.84* 44,866 05 Mar 2026 Direct F1
holding AJG Common Stock 59 05 Mar 2026 By Child
holding AJG Common Stock 12,505 05 Mar 2026 By Spouse's Trust 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 -6,750 -100% $0.000000* 0 05 Mar 2026 Common Stock 6,750 $79.59 Direct F3, F4
holding AJG Phantom Stock 49,197 05 Mar 2026 Common Stock 49,197 Direct F5, F6
holding AJG Non-qualified Stock Option 7,520 05 Mar 2026 Common Stock 7,520 $86.17 Direct F4, F7
holding AJG Non-qualified Stock Option 7,255 05 Mar 2026 Common Stock 7,255 $127.90 Direct F4, F8
holding AJG Non-qualified Stock Option 4,900 05 Mar 2026 Common Stock 4,900 $158.56 Direct F4, F9
holding AJG Non-qualified Stock Option 3,823 05 Mar 2026 Common Stock 3,823 $177.09 Direct F4, F10
holding AJG Non-qualified Stock Option 13,167 05 Mar 2026 Common Stock 13,167 $228.20 Direct F11
holding AJG Non-qualified Stock Option 7,052 05 Mar 2026 Common Stock 7,052 $337.74 Direct F12, F13
holding AJG Notional Stock Units 5,315 05 Mar 2026 Common Stock 5,315 $0.000000 Direct F14, F15, F16
* 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 and the exercise price relating to the exercise of expiring stock options.
F2 Shares held in irrevocable trust, of which his spouse is sole Trustee.
F3 Grant date of 3/14/2019.
F4 One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F5 Each share of phantom stock represents a right to receive one share of Gallagher common stock.
F6 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.
F7 Grant date of 3/12/2020.
F8 Grant date of 3/16/2021.
F9 Grant date of 3/15/2022.
F10 Grant date of 3/15/2023.
F11 One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F12 Closing price of Gallagher common stock on February 28, 2025.
F13 One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F14 Each notional stock unit represents a right to receive one share of Gallagher common stock.
F15 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.
F16 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.