Aon (AON) legal chief’s 10b5-1 sale totals 600 shares

Rhea-AI Filing Summary

Aon plc General Counsel Darren Zeidel sold 600 shares of Class A Ordinary Stock at $360.00 per share in an open-market transaction. The trade occurred on July 7, 2026 under a Rule 10b5-1 trading plan entered into on November 5, 2025. Following the sale, he directly holds 15,354.099 shares.

Insider Trade Summary 10b5-1

Net Seller: 600 shares ($216,000)

Net Sell 1 txn

Insider Zeidel Darren

Role General Counsel

Sold 600 shs ($216K)

Type	Security	Shares	Price	Value
Sale	Class A Ordinary Stock	600	$360.00	$216K

Holdings After Transaction: Class A Ordinary Stock — 15,354.099 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 600 shares Sale price: $360.00 per share Shares held after sale: 15,354.099 shares +1 more

4 metrics

Shares sold 600 shares Class A Ordinary Stock sold on July 7, 2026

Sale price $360.00 per share Open-market sale price for 600 shares

Shares held after sale 15,354.099 shares Direct ownership following the reported transaction

Net shares sold 600 shares Net buy/sell direction reported as net-sell

Key Terms

Class A Ordinary Stock, open-market sale, Rule 10b5-1 trading plan, Form 4

4 terms

Class A Ordinary Stock financial

"security_title: "Class A Ordinary Stock""

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Rule 10b5-1 trading plan regulatory

"a trading plan meeting the requirements of SEC Rule 10b5-1"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

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 07/09/2026 - 05:48 PM Accepted by SEC EDGAR 07/09/2026 - 05:48 PM Learn about SEC filing dates

FAQ

What did Aon (AON) General Counsel Darren Zeidel report in this Form 4?

Darren Zeidel reported an open-market sale of Aon shares. He sold 600 shares of Class A Ordinary Stock at $360.00 per share, and after this transaction he directly holds 15,354.099 Aon shares according to the Form 4 filing details.

How many Aon (AON) shares did Darren Zeidel sell and at what price?

Darren Zeidel sold 600 Aon Class A Ordinary shares at $360.00 each. The sale was reported as an open-market transaction, meaning the shares were sold on the public market rather than in a private or off-exchange transaction.

When did Darren Zeidel’s Aon (AON) share sale take place?

The reported Aon share sale by Darren Zeidel took place on July 7, 2026. This transaction involved 600 shares of Class A Ordinary Stock sold at $360.00 per share in an open-market or private transaction as coded in the Form 4.

How many Aon (AON) shares does Darren Zeidel hold after this transaction?

After the sale, Darren Zeidel directly holds 15,354.099 Aon shares. This post-transaction balance reflects his remaining direct ownership of Class A Ordinary Stock as disclosed in the Form 4 following the 600-share open-market sale.

Was Darren Zeidel’s Aon (AON) share sale under a Rule 10b5-1 plan?

Yes, the Form 4 states the sale was executed under a Rule 10b5-1 trading plan. The plan was entered into on November 5, 2025, indicating the 600-share sale at $360.00 per share was pre-arranged rather than timed discretionarily.

Does this Aon (AON) Form 4 show any option exercises or derivative trades?

No, this Form 4 only reports a non-derivative stock sale of 600 shares. The derivativeSummary is empty and transaction data show no option exercises, conversions, or other derivative-related transactions for Darren Zeidel in this particular filing.

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).

X

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 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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/07/2026

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	07/07/2026		S		600	D	$360(1)	15,354.099	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 transaction reported was effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 5, 2025.

	/s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Darren Zeidel	07/09/2026
	** 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)