Scott R. Hudson - 02 Sep 2026 Form 4 Insider Report for Arthur J. Gallagher & Co. (AJG)

Reporting relationship: Vice President
Issuer ticker: AJG
Reported as of: 02 Sep 2026
Net transaction value: -$3,169,596
SEC form: 4
Accepted by SEC: 04 Sep 2026, 17:25:44 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

Scott R. Hudson filed Form 4 for Arthur J. Gallagher & Co. (AJG) on 04 Sep 2026.

Key facts

This page summarizes Scott R. Hudson's Form 4 filing for Arthur J. Gallagher & Co. (AJG).
3 reported transactions and 9 derivative rows are listed below.
Accepted by SEC: 04 Sep 2026, 17:25.

Change

Previous filing in this sequence was filed on 02 Apr 2026.
Current net transaction value: -$3,169,596.

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 0001482241 Primary reporting owner

Hudson Scott R

Relationship: Vice President
Address: 2850 GOLF ROAD, ROLLING MEADOWS
Signature: /s/ Monica Norzagaray, by power of attorney
Signature date: 04 Sep 2026

Reported non-derivative transactions

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

AJG transaction

Common Stock

Options Exercise

Transaction value
Shares: +12,000
Change %: +13%
Price: $86.17^*
Shares after: 102,262
Date: 02 Sep 2026
Ownership: Direct

AJG transaction

Common Stock

Sale

Transaction value: $3,169,596
Shares: -12,000
Change %: -12%
Price: $264.13
Shares after: 90,262
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F1

AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 411
Date: 02 Sep 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

Non-qualified Stock Option

Options Exercise

Transaction value
Shares: -12,000
Change %: -49%
Price: $0.000000^*
Shares after: 12,370
Date: 02 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 12,000
Exercise price: $86.17
Footnotes: F2

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 23,025
Date: 02 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 23,025
Exercise price: $127.90
Footnotes: F2

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 15,800
Date: 02 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 15,800
Exercise price: $228.20
Footnotes: F3

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 11,480
Date: 02 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 11,480
Exercise price: $158.56
Footnotes: F2

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 10,579
Date: 02 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 10,579
Exercise price: $337.74
Footnotes: F2, F4

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 10,047
Date: 02 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 10,047
Exercise price: $243.54
Footnotes: F5

AJG holding Derivative

Phantom Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,718
Date: 02 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,718
Exercise price
Footnotes: F6, F7

AJG holding Derivative

Notional Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 4,135
Date: 02 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 4,135
Exercise price
Footnotes: F8, F9

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 9,558
Date: 02 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9,558
Exercise price: $177.09
Footnotes: F10

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 10 footnotes

Footnote F1

The price reported is an average weighted price. The shares were sold in multiple transactions on 9/2/2026 at prices ranging from $263.894 to $264.15. 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 ranges set forth in the footnotes to this Form 4.

Footnote F2

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

Footnote F3

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

Footnote F4

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

Footnote F5

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

Footnote F6

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

Footnote F7

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.

Footnote F8

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

Footnote F9

The notional stock units become payable in July 2026 and following the reporting person's separation from service with Gallagher.

Footnote F10

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