Lester B. Knight of Aon (NYSE: AON) awarded 1,488 Class A shares

Rhea-AI Filing Summary

KNIGHT LESTER B reported acquisition or exercise transactions in this Form 4 filing.

Aon plc director Lester B. Knight reported an equity award of Class A Ordinary Shares. On 2026-06-25, he received 1,488 shares of Class A Ordinary Stock as a grant to a non-employee director at a nominal value of $0.01 per share paid to the issuer, resulting in 5,227 directly held shares.

The filing also lists indirect holdings of Class A Ordinary Stock held through a personal revocable trust, a family partnership, and his wife, reflecting additional ownership positions without showing new buy or sell transactions for those accounts.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider KNIGHT LESTER B

Role null

Type	Security	Shares	Price	Value
Grant/Award	Class A Ordinary Stock	1,488	$0.00	--
holding	Class A Ordinary Stock	--	--	--
holding	Class A Ordinary Stock	--	--	--
holding	Class A Ordinary Stock	--	--	--

Holdings After Transaction: Class A Ordinary Stock — 5,227 shares (Direct, null); Class A Ordinary Stock — 124,604 shares (Indirect, By Wife)

Footnotes (1)

1. [object Object]

Key Figures

Director share grant: 1,488 shares Nominal value per share: $0.01 per share Direct holdings after grant: 5,227 shares +3 more

6 metrics

Director share grant 1,488 shares Class A Ordinary Stock awarded to non-employee director

Nominal value per share $0.01 per share Amount paid to issuer under Irish law for granted shares

Direct holdings after grant 5,227 shares Class A Ordinary Stock directly held by Lester B. Knight

Indirect trust holdings 26,033 shares Class A Ordinary Stock via Personal Revocable Trust

Family partnership holdings 143,000 shares Class A Ordinary Stock held by family partnership

Spousal holdings 124,604 shares Class A Ordinary Stock held by wife

Key Terms

Class A Ordinary Stock, non-employee director, Personal Revocable Trust, Family Partnership, +1 more

5 terms

Class A Ordinary Stock financial

"Class A Ordinary Stock as a grant to a non-employee director"

non-employee director financial

"Class A Ordinary Shares granted annually to each non-employee director of Aon plc"

Personal Revocable Trust financial

"indirect holdings of Class A Ordinary Stock held through a personal revocable trust"

Family Partnership financial

"indirect holdings of Class A Ordinary Stock held through a family partnership"

Form 4 regulatory

"The Form 4 lists indirect holdings of Aon Class A Ordinary Stock"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/29/2026 - 06:44 PM Accepted by SEC EDGAR 06/29/2026 - 06:44 PM Learn about SEC filing dates

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
Estimated average burden
hours per response:			0.5

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 ILLINOIS 60601

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/25/2026

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

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

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

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	06/25/2026		A(1)		1,488	A	(1)	5,227	D
Class A Ordinary Stock								124,604	I	By Wife
Class A Ordinary Stock								143,000	I	By Family Partnership
Class A Ordinary Stock								26,033	I	Personal Revocable Trust

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.

	/s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Lester Knight	06/29/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Aon (AON) director Lester B. Knight report?

Lester B. Knight reported receiving an equity grant of Class A Ordinary Stock. He was awarded 1,488 shares as a non-employee director, at a nominal value of $0.01 per share paid to Aon plc under Irish law, increasing his directly held shares.

How many Aon (AON) shares does Lester B. Knight hold directly after this Form 4?

After the reported grant, Lester B. Knight directly holds 5,227 Class A Ordinary Shares. This reflects the addition of 1,488 granted shares to his existing direct position, as disclosed in the Form 4 filing summarizing his updated ownership.

Were the Aon (AON) shares granted to Lester B. Knight purchased on the open market?

No, the shares were not open-market purchases. They were granted annually to a non-employee director as equity compensation, with Knight agreeing under Irish law to pay Aon plc the nominal value of $0.01 per share issued in this award.

What indirect Aon (AON) holdings are associated with Lester B. Knight?

The Form 4 lists indirect holdings of Aon Class A Ordinary Stock through a personal revocable trust, a family partnership, and his wife. These entries show post-transaction share balances for each indirect account, indicating additional ownership beyond his direct holdings.

Does this Aon (AON) Form 4 show any insider stock sales by Lester B. Knight?

The Form 4 does not show any stock sales. It reports an equity grant of 1,488 Class A Ordinary Shares to Knight as compensation and provides updated holding balances for several indirect ownership accounts, without recording open-market dispositions.

What is the significance of the $0.01 per share amount in Lester B. Knight’s Aon (AON) grant?

The $0.01 per share represents the nominal value required under Irish law. The footnote explains Knight agreed to pay Aon plc this nominal amount for each Class A Ordinary Share issued in the director grant, rather than paying a market-based purchase price.