Douglas K. Howell - 10 Feb 2026 Form 4 Insider Report for Arthur J. Gallagher & Co. (AJG)

Signature
/s/ Monica Norzagaray, by power of attorney
Issuer symbol
AJG
Transactions as of
10 Feb 2026
Net transactions value
+$2,740,626
Form type
4
Filing time
12 Feb 2026, 19:52:17 UTC
Previous filing
29 Dec 2025
Next filing
03 Mar 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
HOWELL DOUGLAS K VP & Chief Financial Officer 2850 GOLF ROAD, ROLLING MEADOWS /s/ Monica Norzagaray, by power of attorney 12 Feb 2026 0001222374

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding AJG Common Stock 96,031 10 Feb 2026 Direct
holding AJG Common Stock 3,165 10 Feb 2026 By Spouse F1
holding AJG Common Stock 419 10 Feb 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 Notional Stock Units Discretionary transaction in accordance with Rule 16b-3(f) resulting in acquisition or disposition of issuer securities $2,740,626 +12,892 +7.2% $212.58 191,318 10 Feb 2026 Common Stock 12,892 $0.000000 Direct F2, F3
holding AJG Notional Stock Units 208,342 10 Feb 2026 Common Stock 208,342 $0.000000 Direct F2, F4
holding AJG Non-qualified Stock Option 31,265 10 Feb 2026 Common Stock 31,265 $127.90 Direct F5
holding AJG Non-qualified Stock Option 17,130 10 Feb 2026 Common Stock 17,130 $86.17 Direct F5
holding AJG Non-qualified Stock Option 14,545 10 Feb 2026 Common Stock 14,545 $158.56 Direct F5
holding AJG Non-qualified Stock Option 14,100 10 Feb 2026 Common Stock 14,100 $79.59 Direct F5
holding AJG Non-qualified Stock Option 13,884 10 Feb 2026 Common Stock 13,884 $337.74 Direct F5, F6
holding AJG Non-qualified Stock Option 12,726 10 Feb 2026 Common Stock 12,726 $243.54 Direct F7
holding AJG Non-qualified Stock Option 12,107 10 Feb 2026 Common Stock 12,107 $177.09 Direct F8
holding AJG Phantom Stock 4,286 10 Feb 2026 Common Stock 4,286 Direct F9, F10
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The reporting person has no voting or invesment power over these shares and disclaims beneficial ownership.
F2 Each notional stock unit represents a right to receive one share of Gallagher common stock.
F3 Portions of these notional stock units are payable to the reporting person in shares of common stock in July of 2026, 2028 and 2029 and following the reporting person's separation from service.
F4 The notional stock units become payable following the reporting person's separation from service with Gallagher.
F5 One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F6 Closing price of Gallagher common stock on February 28, 2025.
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 exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
F9 Each share of phantom stock represents a right to receive one share of Gallagher common stock.
F10 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.

Remarks:

This acquisition of notional stock units is a discretionary transaction by the reporting person to move assets he holds in the company's Supplemental Savings and Thrift Plan, a nonqualified deferred compensation plan, into the investment option representing Gallagher common stock.