Arthur J. Gallagher (NYSE: AJG) grants VP 1,541.782 phantom stock units

Rhea-AI Filing Summary

Arthur J. Gallagher & Co. reported that Vice President Mark H. Bloom acquired an award of 1,541.782 shares of phantom stock on March 4, 2026, at a reference price of $227.010 per share. Following this grant, he holds 7,255.745 phantom stock shares directly.

Each phantom stock share represents a right to receive one share of Gallagher common stock. The award was made under the company’s Age 62 Plan, a nonqualified deferred compensation plan. Participants generally vest in these awards when they reach age 62, or after one year if they are already at least 61.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Bloom Mark H.

(Last) (First) (Middle)

2850 GOLF ROAD

(Street)

ROLLING MEADOWS 60008

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Arthur J. Gallagher & Co. [ AJG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Vice President

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: 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	(1)	03/04/2026		A		1,541.782		(2)	(2)	Common Stock	1,541.782	$227.01	7,255.745	D

Explanation of Responses:

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

2. 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.

	/s/ Monica Norzagaray, by power of attorney	03/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transaction did AJG executive Mark H. Bloom report?

Mark H. Bloom, a Vice President at Arthur J. Gallagher (AJG), reported receiving 1,541.782 shares of phantom stock. This grant increased his directly held phantom stock balance to 7,255.745 shares, reflecting a deferred compensation award rather than an open-market stock purchase.

What is the nature of the phantom stock reported by AJG on this Form 4?

Each phantom stock share reported for AJG represents a right to receive one share of Gallagher common stock. These awards track the value of the stock and are part of a nonqualified deferred compensation arrangement rather than traditional shares currently trading in the market.

Under which plan did AJG grant phantom stock to Mark H. Bloom?

The phantom stock granted to Mark H. Bloom was awarded under AJG’s Age 62 Plan, a nonqualified deferred compensation plan. Awards in this plan are deemed invested in company common stock at the participant’s election, aligning compensation with Gallagher’s share performance over time.

When do AJG phantom stock awards under the Age 62 Plan typically vest?

Phantom stock awards under AJG’s Age 62 Plan generally vest when a participant attains age 62. For participants who are already at least 61 when they receive an award, vesting occurs after a one-year period, creating an age- and service-based vesting schedule for these deferred compensation units.

How many phantom stock shares does AJG’s Mark H. Bloom hold after this transaction?

After the reported grant, AJG Vice President Mark H. Bloom holds a total of 7,255.745 phantom stock shares directly. These units are tied to Gallagher common stock through the company’s nonqualified deferred compensation structure and are separate from any regular common shares outstanding.

What reference price per share was used for the AJG phantom stock grant?

The 1,541.782 phantom stock shares granted to Mark H. Bloom used a reference price of $227.010 per share. This price is used to value the deferred compensation award, which represents rights to future Gallagher common stock under the Age 62 Plan.