Aon plc (AON) director Lester Knight reports 7,878-share charitable gift

Rhea-AI Filing Summary

Aon plc (AON) director Lester Knight reported a stock gift under a Form 4 filing. On 12/05/2025, he transferred 7,878 Class A Ordinary Shares to a charitable foundation where he and his spouse serve as trustees, a transaction coded as a gift and priced at $0 per share.

After this transaction, he reported indirect beneficial ownership of 26,033 Class A Ordinary Shares through a personal revocable trust, 124,604 shares held indirectly through his wife, and 139,000 shares held indirectly through a family partnership, along with 3,739 shares directly held. The filing indicates it was made by one reporting person in his capacity as a director of Aon plc.

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^*

KNIGHT LESTER B

(Last) (First) (Middle)

200 EAST 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)
12/05/2025

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	12/05/2025		G(1)		7,878	D	$0	26,033	I	Personal Revocable Trust
Class A Ordinary Stock								3,739	D
Class A Ordinary Stock								124,604	I	By Wife
Class A Ordinary Stock								139,000	I	By Family Partnership

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. The reporting person transferred 7,878 Class A Ordinary Shares to a charitable foundation of which the reporting person and his spouse are trustees.

	s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Lester Knight	12/09/2025
	** 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

What did Aon plc (AON) disclose in this Form 4 filing?

The filing shows that director Lester Knight reported a gift of 7,878 Class A Ordinary Shares of Aon plc on 12/05/2025, transferring them to a charitable foundation where he and his spouse are trustees.

What type of transaction was reported for Aon plc (AON) shares?

The transaction is coded "G", indicating a gift of Aon plc Class A Ordinary Shares. The shares were transferred at a reported price of $0 per share to a charitable foundation.

How many Aon plc (AON) shares did the insider gift?

The reporting person transferred 7,878 Class A Ordinary Shares of Aon plc to a charitable foundation of which he and his spouse are trustees.

How many Aon plc (AON) shares does the insider report owning after the transaction?

Following the reported transaction, the insider reports 26,033 Class A Ordinary Shares held indirectly through a personal revocable trust, 3,739 shares held directly, 124,604 shares held indirectly through his wife, and 139,000 shares held indirectly through a family partnership.

What is the relationship of the reporting person to Aon plc (AON)?

The reporting person is identified as a director of Aon plc, as indicated in the relationship section of the filing.

Was this Aon plc (AON) Form 4 filed by more than one reporting person?

No. The filing indicates it is a Form filed by one reporting person, not a joint or group filing.