What is Jeffrey C. Campbell’s AON share ownership after these transactions?

After the award and related tax withholding, Campbell directly owns 12,806.97 Class A Ordinary shares. This figure reflects his updated direct holdings following the 776-share grant and the 186.235 shares used to cover associated tax liabilities.

Aon (NYSE: AON) director Jeffrey Campbell receives share grant, withholds shares for taxes

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Aon plc director Jeffrey C. Campbell reported routine equity compensation activity involving Class A Ordinary Stock. On 2026-06-25, 186.235 shares were disposed of in a tax-withholding transaction at $315.95 per share to cover taxes tied to an equity award. On the same date, he acquired 776 shares as an annual share grant to non-employee directors, at a nominal value of $0.01 per share under Irish law. Following these transactions, Campbell directly holds 12,806.97 Class A Ordinary shares.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider CAMPBELL JEFFREY C

Role null

Type	Security	Shares	Price	Value
Grant/Award	Class A Ordinary Stock	776	$0.00	--
Tax Withholding	Class A Ordinary Stock	186.235	$315.95	$59K

Holdings After Transaction: Class A Ordinary Stock — 12,806.97 shares (Direct, null)

Footnotes (1)

Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person. Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the award.

Key Figures

Tax-withheld shares: 186.235 shares Tax withholding price: $315.95 per share Equity grant size: 776 shares +2 more

5 metrics

Tax-withheld shares 186.235 shares Class A Ordinary Stock withheld for taxes on 2026-06-25 at $315.95

Tax withholding price $315.95 per share Value used for 186.235 shares withheld for taxes

Equity grant size 776 shares Annual Class A Ordinary share grant to non-employee director on 2026-06-25

Post-transaction holdings 12,806.97 shares Campbell’s direct Class A Ordinary share ownership after transactions

Nominal value per granted share $0.01 per share Amount Campbell agreed to pay under Irish law for each granted share

Key Terms

tax-withholding disposition, Grant, award, or other acquisition, Class A Ordinary Stock, non-employee director

4 terms

tax-withholding disposition financial

"shares were disposed of in a tax-withholding transaction at $315.95 per share"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Grant, award, or other acquisition financial

"the 776-share transaction is classified as a grant, award, or other acquisition"

Class A Ordinary Stock financial

"routine equity compensation activity involving Class A Ordinary Stock"

non-employee director financial

"shares granted annually to each non-employee director of Aon plc"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/29/2026 - 05:31 PM Accepted by SEC EDGAR 06/29/2026 - 05:30 PM

FAQ

What insider transactions did AON director Jeffrey C. Campbell report?

Jeffrey C. Campbell reported a routine equity award and related tax withholding. He received 776 Class A Ordinary shares as an annual director grant and had 186.235 shares withheld by Aon plc to satisfy tax obligations connected with that award.

How many AON shares were granted to Jeffrey C. Campbell in this filing?

Campbell was granted 776 Class A Ordinary shares. The filing describes this as an annual share grant for each non-employee director of Aon plc, issued at a nominal value of US $0.01 per share in accordance with Irish law requirements.

Why were 186.235 AON shares disposed of in Campbell’s Form 4?

The 186.235 shares were withheld by Aon plc to pay taxes on the equity award. The transaction used a price of $315.95 per share and is classified as a tax-withholding disposition, not an open-market sale or discretionary reduction of Campbell’s investment.

Does this AON insider filing indicate any option exercises or derivative trades?

No derivative transactions are reported in this filing. The transactions involve only non-derivative Class A Ordinary Stock: a 776-share grant to Campbell and 186.235 shares withheld by Aon plc for taxes, with no options or similar instruments listed.

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^*

CAMPBELL JEFFREY C

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/25/2026

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)
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	06/25/2026		A⁽¹⁾		776	A	⁽¹⁾	12,806.97	D
Class A Ordinary Stock	06/25/2026		F⁽²⁾		186.235	D	$315.95	12,620.735	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)

Explanation of Responses:

1. Class A Ordinary Shares granted annually to each non-employee director of Aon plc. In accordance with Irish law, reporting person agreed to pay the issuer the nominal value of US $0.01 per share issued to the reporting person.

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

	/s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Jeffrey Campbell	06/29/2026
	** 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)

Source: View Original Filing on SEC EDGAR