Gallagher Patrick Murphy 4

4 · Arthur J. Gallagher & Co. · Filed Mar 3, 2026

Insider Transaction Report

Form 4

Period: 2026-03-01

Arthur J. Gallagher & Co.AJG

Gallagher Patrick Murphy

Chief Operating Officer

Transactions

Exercise/Conversion
Common Stock
2026-03-03$79.59/sh+5,000$397,950→ 36,442.664 total
Award
Non-qualified Stock Option
[F4]
2026-03-01+17,775→ 17,775 total
Exercise: $228.20Exp: 2033-03-01→ Common Stock (17,775 underlying)
Exercise/Conversion
Non-qualified Stock Option
[F5][F6]
2026-03-03−5,000→ 0 total
Exercise: $79.59Exp: 2026-03-14→ Common Stock (5,000 underlying)

Holdings

Common Stock
[F1]
(indirect: By Trust)
10,560
Common Stock
(indirect: By 401(k))
418.696
Common Stock
[F2]
(indirect: By Trust)
53,112
Common Stock
(indirect: By Trust)
83,407.25
Common Stock
[F3]
(indirect: By Trust)
20,432
Common Stock
(indirect: By Trust)
54,959
Phantom Stock
[F7][F8]
→ Common Stock (16,052.856 underlying)
16,052.856
Non-qualified Stock Option
[F9][F5]
Exercise: $337.74Exp: 2032-03-01→ Common Stock (11,901 underlying)
11,901
Non-qualified Stock Option
[F10]
Exercise: $243.54Exp: 2031-03-01→ Common Stock (11,386 underlying)
11,386
Non-qualified Stock Option
[F5][F11]
Exercise: $127.90Exp: 2028-03-16→ Common Stock (7,255 underlying)
7,255
Non-qualified Stock Option
[F5][F12]
Exercise: $86.17Exp: 2027-03-12→ Common Stock (6,270 underlying)
6,270
Non-qualified Stock Option
[F13]
Exercise: $177.09Exp: 2030-03-15→ Common Stock (6,160 underlying)
6,160
Non-qualified Stock Option
[F5][F14]
Exercise: $158.56Exp: 2029-03-15→ Common Stock (5,510 underlying)
5,510
Phantom Stock
[F7][F15]
→ Common Stock (3,804.562 underlying)
3,804.562

Footnotes (15)

[F1]Shares held in trusts, for the benefit of the reporting person's children, of which his wife is sole trustee.
[F10]One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
[F11]Grant date of 3/16/2021.
[F12]Grant date of 3/12/2020.
[F13]One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
[F14]Grant date of 3/15/2022.
[F15]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.
[F2]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
[F3]Shares held in trust for the benefit of the reporting person's children, of which he is a trustee.
[F4]One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
[F5]One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.
[F6]Grant date of 3/14/2019.
[F7]Each share of phantom stock represents a right to receive one share of Gallagher common stock.
[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.
[F9]Closing price of Gallagher common stock on February 28, 2025.

Signature

/s/ Monica Norzagaray, by power of attorney|2026-03-03

Documents

2 files

4
form4.xmlPrimary
PRIMARY DOCUMENT
EX-24
doc1.txt
POWER OF ATTORNEY (PUBLIC): POWER OF ATTORNEY