Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
Washington, D.C. 20549
OMB Number: 3235-0287
Estimated average burden
hours per response...
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
1. Name and Address of Reporting Person * GALLAGHER J PATRICK JR 2. Issuer Name and Ticker or Trading Symbol Arthur J. Gallagher & Co. [ AJG ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)__X__ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
President & CEO
(Last)          (First)          (Middle)
3. Date of Earliest Transaction (MM/DD/YYYY)
4. If Amendment, Date Original Filed (MM/DD/YYYY)
6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)        (State)        (Zip)
Rule 10b5-1(c) Transaction Indication
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock  5/10/2023    M    9224.554  A $0  112224.5057  D   
Common Stock  5/10/2023    F    3870.554  D $217.32  108353.9517  D   
Common Stock                 23448  I  By Spouse's Trust (1)
Common Stock                 255965  I  By Corporation 
Common Stock                 94888  I  By Irrevocable Trust 
Common Stock                 241756  I  By Spouse (2)
Common Stock                 219165  I  By Trust (3)
Common Stock                 293.475  I  Gallagher 401(k) plan account 

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Phantom Stock   (4) 5/10/2023    M        9224.554    (5)  (5) Common Stock  9224.554  $0  139323.277  D   

Explanation of Responses:
(1)  Shares held in trust for the benefit of my children of which I am sole Trustee.
(2)  Shares held in revocable trust of which my spouse is sole Trustee and as to which I disclaim beneficial ownership.
(3)  Held in trust for benefit of children.
(4)  Each share of phantom stock represents a right to receive one share of Gallagher common stock.
(5)  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.

This filing reports the distribution of shares, and the withholding of shares for taxes, in connection with an Age 62 Plan award that vested earlier in the year during a quarterly trading blackout period.

Reporting Owners
Reporting Owner Name / Address
Director 10% Owner Officer Other
President & CEO

/s/ Seth Diehl, by power of attorney 5/12/2023
**Signature of Reporting Person Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
Arthur J Gallagher (NYSE:AJG)
Historical Stock Chart
Von Sep 2023 bis Okt 2023 Click Here for more Arthur J Gallagher Charts.
Arthur J Gallagher (NYSE:AJG)
Historical Stock Chart
Von Okt 2022 bis Okt 2023 Click Here for more Arthur J Gallagher Charts.