Aon (AON) General Counsel Darren Zeidel sells 4,300 shares in open market

Rhea-AI Filing Summary

Aon plc General Counsel Darren Zeidel reported an open-market sale of 4,300 shares of Class A Ordinary Stock at a weighted average price of $329.7171 per share. After this transaction, he directly owns 15,954.099 Aon shares. The sale was executed through multiple trades within a narrow intraday price range.

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

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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^*

Zeidel Darren

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
02/26/2026

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
Class A Ordinary Stock	02/26/2026		S		4,300	D	$329.7171(1)	15,954.099	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. The price reported is a weighted average price. Shares were sold in a series of transactions within the same trading day at prices ranging from $329.68 to $330.015, inclusive. Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.

	/s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Darren Zeidel	03/02/2026
	** 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.

FAQ

What insider transaction did Aon (AON) report for Darren Zeidel?

Aon reported that General Counsel Darren Zeidel sold 4,300 Class A Ordinary shares in an open-market transaction. The weighted average sale price was about $329.7171 per share, reflecting multiple trades completed on the same trading day.

At what price did the Aon (AON) General Counsel sell his shares?

Darren Zeidel sold 4,300 Aon shares at a weighted average price of $329.7171 per share. According to the footnote, individual trades occurred between $329.68 and $330.015 during that trading day.

How many Aon (AON) shares does Darren Zeidel own after this Form 4 sale?

After the reported sale, Darren Zeidel directly owns 15,954.099 Aon Class A Ordinary shares. This post-transaction holding reflects his remaining direct ownership following the 4,300-share open-market sale disclosed in the Form 4.

Was the Aon (AON) insider transaction a buy or sell?

The Form 4 shows a sell transaction by Aon’s General Counsel, Darren Zeidel. He conducted an open-market sale of 4,300 Class A Ordinary shares, categorized under transaction code “S,” which denotes a sale in the open market or a private transaction.

What does the weighted average price mean in the Aon (AON) Form 4 filing?

The weighted average price of $329.7171 means the 4,300 shares were sold in multiple trades that day. Individual trade prices ranged from $329.68 to $330.015, and the reported figure averages these trades based on share volume at each price.

Who is the insider involved in the latest Aon (AON) Form 4 transaction?

The insider is Darren Zeidel, Aon plc’s General Counsel. He is an executive officer of the company and reported selling 4,300 Class A Ordinary shares, leaving him with a direct ownership position of 15,954.099 shares after the transaction.