Patrick Murphy Gallagher - 15 Mar 2026 Form 4 Insider Report for Arthur J. Gallagher & Co. (AJG)

Reporting relationship
Chief Operating Officer
Issuer ticker
AJG
Reported as of
15 Mar 2026
Net transaction value
$0
Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
4
Accepted by SEC
17 Mar 2026, 21:31:07 UTC
Prior SEC filing
06 Mar 2026
Next SEC filing
24 Mar 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Monica Norzagaray, by power of attorney

Key filing fact

Patrick Murphy Gallagher filed Form 4 for Arthur J. Gallagher & Co. (AJG) on 17 Mar 2026.

Key facts

  • This page summarizes Patrick Murphy Gallagher's Form 4 filing for Arthur J. Gallagher & Co. (AJG).
  • 5 reported transactions and 10 derivative rows are listed below.
  • Accepted by SEC: 17 Mar 2026, 21:31.

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 0001929606 Primary reporting owner

Gallagher Patrick Murphy

Relationship
Chief Operating 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
+4,620
Change %
Price
$0.000000*
Shares after
4,620
Date
15 Mar 2026
Ownership
Direct
Footnotes
F1
AJG transaction

Common Stock (restricted)

Options Exercise

Transaction value
Shares
-4,620
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 Mar 2026
Ownership
Direct
AJG transaction

Common Stock

Options Exercise

Transaction value
Shares
+4,620
Change %
+13%
Price
$0.000000*
Shares after
41,063
Date
15 Mar 2026
Ownership
Direct
AJG transaction

Common Stock

Tax liability

Transaction value
Shares
-1,962
Change %
-4.8%
Price
$207.93*
Shares after
39,101
Date
15 Mar 2026
Ownership
Direct
AJG transaction

Common Stock

Tax liability

Transaction value
Shares
-525
Change %
-1.3%
Price
$207.93*
Shares after
38,576
Date
16 Mar 2026
Ownership
Direct
Footnotes
F2
AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
10,560
Date
15 Mar 2026
Ownership
By Spouse as Trustee
Footnotes
F3
AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
491
Date
15 Mar 2026
Ownership
Gallagher 401(k) plan account
AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
53,262
Date
15 Mar 2026
Ownership
By Spouse's Trust
Footnotes
F4
AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
83,407
Date
15 Mar 2026
Ownership
By Trust
AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
21,032
Date
15 Mar 2026
Ownership
By Trust
Footnotes
F5
AJG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
55,109
Date
15 Mar 2026
Ownership
By Irrevocable Trust

Reported derivative securities

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

AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
17,775
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
17,775
Exercise price
$228.20
Footnotes
F6
AJG holding Derivative

Phantom Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
17,595
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
17,595
Exercise price
Footnotes
F7, F8
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
11,901
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
11,901
Exercise price
$337.74
Footnotes
F9, F10
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
11,386
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
11,386
Exercise price
$243.54
Footnotes
F11
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,255
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
7,255
Exercise price
$127.90
Footnotes
F10, F12
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
6,270
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
6,270
Exercise price
$86.17
Footnotes
F10, F13
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
6,160
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
6,160
Exercise price
$177.09
Footnotes
F14
AJG holding Derivative

Notional Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
907
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
907
Exercise price
Footnotes
F15, F16, F17
AJG holding Derivative

Phantom Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
3,805
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
3,805
Exercise price
Footnotes
F7, F18
AJG holding Derivative

Non-qualified Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
5,510
Date
15 Mar 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
5,510
Exercise price
$158.56
Footnotes
F10, F19
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 19 footnotes

Footnote F1

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

Footnote F2

Shares withheld to cover applicable tax obligations relating to the vesting of restricted stock units.

Footnote F3

Shares held in trusts, for the benefit of the reporting person's children, of which his wife is sole trustee.

Footnote F4

Shares held in a revocable trust and an irrevocable trust of which the reporting person's spouse is sole Trustee and as to which he disclaims beneficial ownership

Footnote F5

Shares held in trust for the benefit of the reporting person's children, of which he is a trustee.

Footnote F6

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

Footnote F7

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

Footnote F8

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 F9

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

Footnote F10

One-third of this stock option becomes exerciseable 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

Grant date of 3/16/2021.

Footnote F13

Grant date of 3/12/2020.

Footnote F14

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

Footnote F15

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

Footnote F16

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

Footnote F17

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

Footnote F18

These shares represent awards under the Deferred Cash Participation Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the participant. These awards are payable in a lump sum on the six-month anniversary of the reporting person's separation from service.

Footnote F19

Grant date of 3/15/2022.

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