Douglas K. Howell - 22 Jun 2026 Form 4 Insider Report for Arthur J. Gallagher & Co. (AJG)

Reporting relationship: VP & Chief Financial Officer
Issuer ticker: AJG
Reported as of: 22 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 24 Jun 2026, 18:45:06 UTC
Prior SEC filing: 02 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Monica Norzagaray, by power of attorney

Key filing fact

Douglas K. Howell filed Form 4 for Arthur J. Gallagher & Co. (AJG) on 24 Jun 2026.

Key facts

This page summarizes Douglas K. Howell's Form 4 filing for Arthur J. Gallagher & Co. (AJG).
1 reported transaction and 10 derivative rows are listed below.
Accepted by SEC: 24 Jun 2026, 18:45.

Change

Previous filing in this sequence was filed on 02 Apr 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001222374 Primary reporting owner

HOWELL DOUGLAS K

Relationship: VP & Chief Financial Officer
Address: 2850 GOLF ROAD, ROLLING MEADOWS
Signature: /s/ Monica Norzagaray, by power of attorney
Signature date: 24 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 106,807
Date: 22 Jun 2026
Ownership: Direct

AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,165
Date: 22 Jun 2026
Ownership: By Spouse
Footnotes: F1

AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 491
Date: 22 Jun 2026
Ownership: Gallagher 401(k) plan account

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

AJG transaction Derivative

Notional Stock Units

Discretionary transaction in accordance with Rule 16b-3(f) resulting in acquisition or disposition of issuer securities

Transaction value
Shares: -12,954
Change %: -6.5%
Price: $209.08^*
Shares after: 185,954
Date: 22 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 12,954
Exercise price: $0.000000
Footnotes: F2, F3, F4, F5

AJG holding Derivative

Notional Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 208,342
Date: 22 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 208,342
Exercise price: $0.000000
Footnotes: F2, F6

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 31,265
Date: 22 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 31,265
Exercise price: $127.90
Footnotes: F7

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 20,737
Date: 22 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 20,737
Exercise price: $228.20
Footnotes: F8

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 17,130
Date: 22 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 17,130
Exercise price: $86.17
Footnotes: F7

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 14,545
Date: 22 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 14,545
Exercise price: $158.56
Footnotes: F7

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 13,884
Date: 22 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 13,884
Exercise price: $337.74
Footnotes: F7, F9

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 12,726
Date: 22 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 12,726
Exercise price: $243.54
Footnotes: F10

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 12,107
Date: 22 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 12,107
Exercise price: $177.09
Footnotes: F11

AJG holding Derivative

Phantom Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 6,889
Date: 22 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 6,889
Exercise price
Footnotes: F12, F13

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 13 footnotes

Footnote F1

The reporting person has no voting or invesment power over these shares and disclaims beneficial ownership.

Footnote F2

Each notional stock unit represents a right to receive one share of Gallagher common stock.

Footnote F3

This disposition 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 ("SS&T Plan"), a nonqualified deferred compensation plan, from the investment option representing Gallagher common stock to cash partially to cover his expected tax obligations as a result of a distribution that will occur in July 2026 under such plan.

Footnote F4

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.

Footnote F5

The reporting person's disposition of Gallagher common stock reported herein was matchable under Section 16(b) of the Securities and Exchange Act of 1934, to the extent of 12,892.211 shares the reporting person invested in through the SS&T Plan on February 12, 2026. The reporting person had a loss of approximately $32,123 in connection with this short-swing transaction.

Footnote F6

The notional stock units become payable following the reporting person's separation from service with Gallagher.

Footnote F7

One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

Footnote F8

One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

Footnote F9

Closing price of Gallagher common stock on February 28, 2025.

Footnote F10

One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

Footnote F11

One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

Footnote F12

Each share of phantom stock represents a right to receive one share of Gallagher common stock.

Footnote F13

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.

SEC remarks

This disposition of notional stock units is a discretionary transaction by the reporting person to move assets he holds in the company's SS&T Plan, a nonqualified deferred compensation plan, from the investment option representing Gallagher common stock to cash partially to cover his expected tax obligations as a result of a distribution that will occur in July 2026 under such plan. The reporting person's disposition of Gallagher common stock reported herein was matchable under Section 16(b) of the Securities and Exchange Act of 1934, to the extent of 12,892.211 shares the reporting person invested in through the SS&T Plan on February 12, 2026. The reporting person had a loss of approximately $32,123 in connection with this short-swing transaction.