[Form 4] Aon plc Insider Trading Activity

Rhea-AI Filing Summary

Form 4 filing overview – Aon plc (AON)

Director Jose Antonio Alvarez reported two equity transactions dated 26 June 2025 involving the company’s Class A ordinary shares.

• Equity award: 637 shares were acquired under Aon’s annual non-employee director grant (Transaction Code A). Footnote 1 states the director paid the issuer the nominal value of US $0.01 per share in accordance with Irish law.
• Tax withholding: 305.752 shares were withheld by the issuer to satisfy tax obligations related to the same award (Transaction Code F) at a stated price of $353.55 per share (Footnote 2).

Following these transactions, Alvarez’s direct beneficial ownership changed from 1,172.612 to 866.86 Class A shares.

The filing reflects routine director compensation and associated tax withholding; no open-market purchases or sales were disclosed.

Insights

Securities Analyst

TL;DR – Routine director equity grant; neutral for valuation.

The Form 4 shows a standard non-employee director stock grant (637 shares) offset by tax withholding (305.752 shares). Net beneficial ownership is 866.86 shares. No open-market transactions or changes in strategic stance are evident. Such administrative filings generally carry minimal market impact because they do not signal insider sentiment or materially alter share float. I therefore classify the event as neutral.

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

OMB APPROVAL

OMB Number:			3235-0287
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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^*

Alvarez Jose Antonio

(Last) (First) (Middle)

200 E. RANDOLPH ST.

(Street)

CHICAGO IL 60601

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Aon plc [ AON ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
06/26/2025

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
Class A Ordinary Stock	06/26/2025		A(1)		637	A	(1)	1,172.612	D
Class A Ordinary Stock	06/26/2025		F(2)		305.752	D	$353.55	866.86	D

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

Explanation of Responses:

1. Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

2. Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the award.

	/s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Jose Antonio Alvarez	06/30/2025
	** 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 Number.

FAQ

How many AON shares did Director Jose Antonio Alvarez receive on 26 June 2025?

He acquired 637 Class A shares as part of the annual non-employee director equity award.

Why were 305.752 AON shares disposed of in the Form 4?

Those shares were withheld by the issuer for tax payments related to the equity award (Transaction Code F).

What is Jose Antonio Alvarez’s current direct ownership in AON after the transaction?

The director now directly holds 866.86 Class A shares.

Was there any open-market purchase or sale of AON stock disclosed?

No. The filing only shows an equity award and tax withholding, with no open-market activity.

Does this Form 4 filing have material impact on AON’s share count?

It is a routine director compensation event and is not considered material to AON’s overall share float.