What are the key terms of Anne Corona’s Aon (AON) restricted share unit awards?

The RSU awards vest over three years in equal parts. Footnotes state awards vest 33 1/3% on each of the first through third anniversaries of grant, converting into Class A Ordinary Shares on a 1-for-1 basis with nominal $0.01 per share paid.

Aon CCO Anne Corona RSUs Vest, Shares Withheld for Tax

Q: What did Aon (AON) executive Anne Corona report in this Form 4 filing?

Anne Corona reported RSU vesting into Aon shares. Restricted share units converted into 367 Class A Ordinary Shares, with a portion withheld for taxes, reflecting routine equity compensation rather than open-market share purchases or sales.

Q: How many Aon (AON) shares did Anne Corona acquire through RSU vesting?

Anne Corona acquired 367 Aon shares via RSU vesting. Restricted share units granted under Aon’s 2011 Incentive Compensation Plan converted on a 1-for-1 basis into 367 Class A Ordinary Shares as part of scheduled vesting terms.

Q: Were any of Anne Corona’s Aon (AON) shares sold on the market in this Form 4?

No open-market sales were reported in this Form 4. A total of 162.577 Class A Ordinary Shares were withheld by Aon at $321.41 per share solely to satisfy tax obligations arising from the RSU vesting event.

Q: How were taxes handled on Anne Corona’s Aon (AON) RSU vesting?

Aon withheld shares to cover the tax liability. The filing shows 162.577 Class A Ordinary Shares withheld at $321.41 per share, representing payment of taxes in connection with the RSU vesting instead of a cash payment or market sale.

Aon plc Chief Commercial Officer Anne Corona reported the vesting and exercise of restricted share units into Class A Ordinary Shares.

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Rhea-AI Filing Summary

Aon plc Chief Commercial Officer Anne Corona reported the vesting and exercise of restricted share units into Class A Ordinary Shares. On March 13, 2026, RSU awards converted into 367 shares, reflecting scheduled vesting under Aon’s incentive plan on a 1-for-1 basis.

To cover tax obligations on the vesting, 162.577 shares were withheld by Aon at a reference price of $321.41 per share, rather than being sold in the open market. After these transactions, Corona directly holds 4,194.791 Class A Ordinary Shares of Aon.

Insider Trade Summary

367 shares exercised/converted

Exercise 6 txns

Insider Corona Anne

Role Chief Commercial Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Share Unit (Right to Receive)	193	$0.00	$0.00
Exercise	Restricted Share Unit (Right to Receive)	174	$0.00	$0.00
Exercise	Class A Ordinary Stock	193	$0.00	$0.00
Exercise Price or Tax Liability	Class A Ordinary Stock	85.497	$321.41	$27K
Exercise	Class A Ordinary Stock	174	$0.00	$0.00
Exercise Price or Tax Liability	Class A Ordinary Stock	77.08	$321.41	$25K

Holdings After Transaction: Restricted Share Unit (Right to Receive) — 348 contracts (Direct); Class A Ordinary Stock — 4,194.791 shares (Direct)

Footnotes (5)

F1. Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
F2. Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.
F3. The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.
F4. A restricted share unit award was granted on March 15, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.
F5. A restricted share unit award was granted on March 14, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

FAQ

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What did Aon (AON) executive Anne Corona report in this Form 4 filing?

Anne Corona reported RSU vesting into Aon shares. Restricted share units converted into 367 Class A Ordinary Shares, with a portion withheld for taxes, reflecting routine equity compensation rather than open-market share purchases or sales.

How many Aon (AON) shares did Anne Corona acquire through RSU vesting?

Anne Corona acquired 367 Aon shares via RSU vesting. Restricted share units granted under Aon’s 2011 Incentive Compensation Plan converted on a 1-for-1 basis into 367 Class A Ordinary Shares as part of scheduled vesting terms.

Were any of Anne Corona’s Aon (AON) shares sold on the market in this Form 4?

No open-market sales were reported in this Form 4. A total of 162.577 Class A Ordinary Shares were withheld by Aon at $321.41 per share solely to satisfy tax obligations arising from the RSU vesting event.

How many Aon (AON) shares does Anne Corona own after these transactions?

After the transactions, Anne Corona holds 4,194.791 shares. Following RSU conversion and tax withholding, her direct ownership in Aon’s Class A Ordinary Shares increased to 4,194.791, as disclosed in the post-transaction share balances.

How were taxes handled on Anne Corona’s Aon (AON) RSU vesting?

Aon withheld shares to cover the tax liability. The filing shows 162.577 Class A Ordinary Shares withheld at $321.41 per share, representing payment of taxes in connection with the RSU vesting instead of a cash payment or market sale.

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Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 03/17/2026 - 04:14 PM EDT

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^*

Corona Anne

(Last)

(First)

(Middle)

200 EAST RANDOLPH STREET

(Street)

CHICAGO

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)
	Chief Commercial Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Ordinary Stock	03/13/2026		M⁽¹⁾		193	A	⁽¹⁾	4,183.368	D
Class A Ordinary Stock	03/13/2026		F⁽²⁾		85.497	D	$321.41	4,097.871	D
Class A Ordinary Stock	03/13/2026		M⁽¹⁾		174	A	⁽¹⁾	4,271.871	D
Class A Ordinary Stock	03/13/2026		F⁽²⁾		77.08	D	$321.41	4,194.791	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Share Unit (Right to Receive)	⁽³⁾	03/13/2026		M			193	⁽⁴⁾	03/15/2026⁽⁴⁾	Class A Ordinary Shares	193	$0	0	D
Restricted Share Unit (Right to Receive)	⁽³⁾	03/13/2026		M			174	⁽⁵⁾	03/14/2028⁽⁵⁾	Class A Ordinary Shares	174	$0	348	D

Explanation of Responses:

1. Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

2. Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.

3. The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of $0.01 per share issued to the reporting person.

4. A restricted share unit award was granted on March 15, 2023 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

5. A restricted share unit award was granted on March 14, 2025 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.

	/s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Anne Corona	03/17/2026
	** 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.

Source: View Original Filing on SEC EDGAR