Aon shareholder plans sale of 1,900 Class A shares

Aon plc shareholder Darren E. Zeidel filed a notice covering the potential sale of up to 1,900 Class A shares held at Fidelity Brokerage Services LLC, with an aggregate market value of $717,750.00, to be sold on the NYSE on 07/28/2026.

Rhea-AI Filing Summary

Aon plc shareholder Darren E. Zeidel filed a notice covering the potential sale of up to 1,900 Class A shares held at Fidelity Brokerage Services LLC, with an aggregate market value of $717,750.00, to be sold on the NYSE on 07/28/2026.

The shares to be sold were acquired through restricted stock vesting and classified as compensation, including 1,255 shares vested on 02/16/2023, 437 on 02/16/2024, and 208 on 02/17/2024. The filing also reports sales during the past three months: 600 Class A shares on 07/07/2026 for $216,000.00 and 1,950 Class A shares on 07/17/2026 for $725,500.00.

Key Figures

Shares to be sold: 1,900 Class A shares Aggregate market value of planned sale: $717,750.00 Restricted stock vesting 1: 1,255 shares +4 more

7 metrics

Shares to be sold 1,900 Class A shares Covered for sale on NYSE dated 07/28/2026

Aggregate market value of planned sale $717,750.00 Value of 1,900 Class A shares covered in the notice

Restricted stock vesting 1 1,255 shares Class A restricted stock vested on 02/16/2023 as compensation

Restricted stock vesting 2 437 shares Class A restricted stock vested on 02/16/2024 as compensation

Restricted stock vesting 3 208 shares Class A restricted stock vested on 02/17/2024 as compensation

Recent sale 1 600 shares for $216,000.00 Class A shares sold on 07/07/2026

Recent sale 2 1,950 shares for $725,500.00 Class A shares sold on 07/17/2026

Key Terms

Form 144, Restricted Stock Vesting, Compensation

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Vesting financial

"Class A | 02/16/2023 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Compensation financial

"02/16/2023 | Compensation Class A | 02/16/2024 | Restricted Stock"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the AON Form 144 filing by Darren E. Zeidel disclose?

The filing discloses a potential sale of up to 1,900 AON Class A shares with an aggregate market value of $717,750.00. It also details how these shares were acquired and prior share sales in the last three months.

How many AON (AON) shares are covered for sale in this Form 144?

The notice covers up to 1,900 Class A shares of AON. These shares are held at Fidelity Brokerage Services LLC and are associated with an aggregate market value of $717,750.00 for a sale on the NYSE dated 07/28/2026.

What were the recent AON (AON) share sales reported by Darren E. Zeidel?

The filer reports selling 600 Class A shares on 07/07/2026 for $216,000.00 and 1,950 Class A shares on 07/17/2026 for $725,500.00. These transactions are listed as securities sold during the past three months.

How did Darren E. Zeidel acquire the AON (AON) shares to be sold?

The shares were acquired via restricted stock vesting from the issuer as compensation. Vesting events include 1,255 shares on 02/16/2023, 437 shares on 02/16/2024, and 208 shares on 02/17/2024, all classified as compensation awards.

On which exchange are the AON (AON) shares in this Form 144 expected to trade?

The Class A shares referenced in the filing are listed for sale on the NYSE. The Form 144 identifies the New York Stock Exchange as the trading market for the potential sale dated 07/28/2026.

What is the reported market value of AON (AON) shares to be sold by Darren E. Zeidel?

The aggregate market value of the 1,900 Class A shares to be sold is listed as $717,750.00. This figure reflects the value associated with the planned NYSE transaction described in the notice.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 07/28/2026 - 04:13 PM Accepted by SEC EDGAR 07/28/2026 - 04:12 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001782945
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Aon plc
SEC File Number	001-07933
Address of Issuer	15 GEORGES QUAY DUBLIN 2 IRELAND D02 VR98
Phone	35312666000
Name of Person for Whose Account the Securities are To Be Sold	Zeidel Darren
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	1900	717750.00	213576949	07/28/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A	02/16/2023	Restricted Stock Vesting	Issuer			1255	02/16/2023	Compensation
Class A	02/16/2024	Restricted Stock Vesting	Issuer			437	02/16/2024	Compensation
Class A	02/17/2024	Restricted Stock Vesting	Issuer			208	02/17/2024	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Darren E. Zeidel 15 George's Quay Dublin 2 L2 D02 VR98	Class A	07/07/2026	600	216000.00
Darren E. Zeidel 15 George's Quay Dublin 2 L2 D02 VR98	Class A	07/17/2026	1950	725500.00

144: Remarks and Signature

Remarks
Date of Notice	07/28/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/05/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Darren E. Zeidel
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)