Susan E. Pietrucha - 15 Mar 2026 Form 4 Insider Report for Arthur J. Gallagher & Co. (AJG)

Reporting relationship
Chief Human Resources Officer
Issuer ticker
AJG
Reported as of
15 Mar 2026
Net transaction value
$0
Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
4
Accepted by SEC
17 Mar 2026, 21:56:46 UTC
Prior SEC filing
06 Mar 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Monica Norzagaray, by power of attorney

Key filing fact

Susan E. Pietrucha filed Form 4 for Arthur J. Gallagher & Co. (AJG) on 17 Mar 2026.

Key facts

  • This page summarizes Susan E. Pietrucha's Form 4 filing for Arthur J. Gallagher & Co. (AJG).
  • 4 reported transactions and 9 derivative rows are listed below.
  • Accepted by SEC: 17 Mar 2026, 21:56.

Change

  • Previous filing in this sequence was filed on 06 Mar 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 0001386997 Primary reporting owner

Pietrucha Susan E

Relationship
Chief Human Resources Officer
Address
2850 GOLF ROAD, ROLLING MEADOWS
Signature
/s/ Monica Norzagaray, by power of attorney
Signature date
17 Mar 2026

Reported non-derivative transactions

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

AJG transaction

Common Stock (restricted)

Award

Transaction value
Shares
+6,612
Change %
Price
$0.000000*
Shares after
6,612
Date
15 Mar 2026
Ownership
Direct
Footnotes
F1
AJG transaction

Common Stock (restricted)

Options Exercise

Transaction value
Shares
-6,612
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 Mar 2026
Ownership
Direct
AJG transaction

Common Stock

Options Exercise

Transaction value
Shares
+6,612
Change %
+55%
Price
$0.000000*
Shares after
18,583
Date
15 Mar 2026
Ownership
Direct
AJG transaction

Common Stock

Tax liability

Transaction value
Shares
-2,186
Change %
-12%
Price
$207.93*
Shares after
16,397
Date
15 Mar 2026
Ownership
Direct
AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
367
Date
15 Mar 2026
Ownership
Gallagher 401(k) plan account

Reported derivative securities

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

AJG holding Derivative

Phantom Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
100,638
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
100,638
Exercise price
Footnotes
F2, F3
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
21,210
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
21,210
Exercise price
$127.90
Footnotes
F4
AJG holding Derivative

Notional Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
15,324
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
15,324
Exercise price
$0.000000
Footnotes
F5, F6
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
15,020
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
15,020
Exercise price
$86.17
Footnotes
F4
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
14,977
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
14,977
Exercise price
$228.20
Footnotes
F7
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
10,028
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
10,028
Exercise price
$337.74
Footnotes
F4, F8
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
9,875
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
9,875
Exercise price
$158.56
Footnotes
F4
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
9,210
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
9,210
Exercise price
$243.54
Footnotes
F9
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
8,815
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
8,815
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

Performance share units (awarded on March 15, 2023) earned and vested as of March 15, 2026.

Footnote F2

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

Footnote F3

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 F4

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

Footnote F5

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

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 exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

Footnote F8

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

Footnote F9

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

Footnote F10

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

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