Aon executive reports RSU vesting and tax withholding

Aon plc CEO, Regions & North America Lori Goltermann reported routine equity compensation activity involving restricted share units that vested into Class A Ordinary Shares.

Rhea-AI Filing Summary

Aon plc CEO, Regions & North America Lori Goltermann reported routine equity compensation activity involving restricted share units that vested into Class A Ordinary Shares. She exercised restricted share units to acquire 518 shares and had 225.324 shares withheld by Aon to cover tax obligations, a non-market disposition. After these transactions, she directly holds 6,795.447 Class A Ordinary Shares.

Insider Trade Summary

518 shares exercised/converted

Exercise 6 txns

Insider Goltermann Lori

Role CEO, Regions & North America

Type	Security	Shares	Price	Value
Exercise	Restricted Share Unit (Right to Receive)	228	$0.00	$0.00
Exercise	Restricted Share Unit (Right to Receive)	290	$0.00	$0.00
Exercise	Class A Ordinary Stock	228	$0.00	$0.00
Exercise Price or Tax Liability	Class A Ordinary Stock	99.177	$321.41	$32K
Exercise	Class A Ordinary Stock	290	$0.00	$0.00
Exercise Price or Tax Liability	Class A Ordinary Stock	126.147	$321.41	$41K

Holdings After Transaction: Restricted Share Unit (Right to Receive) — 580 contracts (Direct); Class A Ordinary Stock — 6,795.447 shares (Direct)

Footnotes (5)

1. F1. Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
2. F2. Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.
3. 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.
4. 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.
5. 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 Lori Goltermann report in this Form 4?

Lori Goltermann reported vesting of restricted share units that converted into Class A Ordinary Shares and related tax withholding. She acquired 518 shares through derivative exercises, with 225.324 shares withheld by Aon to satisfy tax liabilities tied to the vesting event.

How many Aon Class A Ordinary Shares does Lori Goltermann hold after these transactions?

After the reported transactions, Lori Goltermann directly holds 6,795.447 Aon Class A Ordinary Shares. This figure reflects the restricted share units that vested into shares, reduced by shares withheld by the issuer to cover associated tax obligations on the vesting.

Were any of Lori Goltermann’s Aon share transactions open-market buys or sells?

No, the Form 4 shows no open-market purchases or sales. The transactions consist of restricted share units converting into Class A Ordinary Shares and shares withheld by Aon to pay taxes, which is a non-market, administrative disposition rather than a discretionary trade.

What do the tax-withholding transactions mean in Lori Goltermann’s Aon Form 4?

The tax-withholding entries reflect 225.324 Class A Ordinary Shares withheld by Aon at $321.41 per share to pay taxes due on RSU vesting. These are coded as F transactions and are not market sales, but deliveries of shares back to the issuer for tax obligations.

How do the restricted share unit awards for Lori Goltermann at Aon vest over time?

Footnotes indicate RSU awards granted on March 15, 2023 and March 14, 2025 vest under Aon’s 2011 Incentive Compensation Plan. Each award vests in three equal installments, with 33 1/3% vesting on each of the first, second, and third anniversaries of the grant date.

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

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Accepted by SEC EDGAR 03/17/2026 - 04:11 PM EDT 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
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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^*

Goltermann Lori

(Last) (First) (Middle)

200 EAST RANDOLPH STREET

(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)
	CEO, Regions & North America

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)
			Code	V	Amount	(A) or (D)	Price
Class A Ordinary Stock	03/13/2026		M(1)		228	A	(1)	6,730.771	D
Class A Ordinary Stock	03/13/2026		F(2)		99.177	D	$321.41	6,631.594	D
Class A Ordinary Stock	03/13/2026		M(1)		290	A	(1)	6,921.594	D
Class A Ordinary Stock	03/13/2026		F(2)		126.147	D	$321.41	6,795.447	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
Restricted Share Unit (Right to Receive)	(3)	03/13/2026		M			228	(4)	03/15/2026(4)	Class A Ordinary Shares	228	$0	0	D
Restricted Share Unit (Right to Receive)	(3)	03/13/2026		M			290	(5)	03/14/2028(5)	Class A Ordinary Shares	290	$0	580	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 Lori Goltermann	03/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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