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Aon (AON) director Gloria Santona gets share grant, has stock withheld for taxes

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Aon plc director Gloria Santona reported routine equity compensation and related tax withholding in Class A Ordinary Stock. On June 25, 2026, she received a grant of 776 Class A Ordinary Shares, described as the annual award to each non-employee director, with a nominal value of $0.01 per share under Irish law.

On the same date, 186.235 shares were withheld by Aon for payment of taxes in connection with this award at a reference price of $315.95 per share. Following these direct transactions, Santona directly owned 22,647.97 Class A Ordinary Shares. Separately, 17,736 Class A Ordinary Shares were reported as held indirectly by a trust.

Positive

  • None.

Negative

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Insider SANTONA GLORIA
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
holding Class A Ordinary Stock -- -- --
Holdings After Transaction: Class A Ordinary Stock — 22,647.97 shares (Direct, null); Class A Ordinary Stock — 17,736 shares (Indirect, By Trust)
Footnotes (1)
  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.
Equity grant 776 Class A Ordinary Shares Annual grant to non-employee director on June 25, 2026
Tax-withheld shares 186.235 shares Withheld for taxes at $315.95 per share on June 25, 2026
Reference share price $315.95 per share Price used for tax-withholding disposition (code F)
Direct holdings after transactions 22,647.97 shares Class A Ordinary Shares directly owned after June 25, 2026
Indirect trust holdings 17,736 shares Class A Ordinary Shares held indirectly by trust as of June 25, 2026
Nominal value per share $0.01 per share Amount paid to issuer under Irish law for granted shares
Class A Ordinary Stock financial
"Class A Ordinary Stock transactions reported for June 25, 2026"
grant/award acquisition financial
"transaction_action is described as grant/award acquisition for 776 shares"
tax-withholding disposition financial
"transaction_action is tax-withholding disposition for 186.235 shares at $315.95"
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.
non-employee director financial
"Class A Ordinary Shares granted annually to each non-employee director of Aon plc"
Irish law regulatory
"In accordance with Irish law, reporting person agreed to pay the nominal value"
By Trust financial
"Indirect ownership of 17,736 shares is reported as By Trust"
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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
SANTONA GLORIA
(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)
XDirector10% 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)
XForm 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)
CodeVAmount(A) or (D)Price
Class A Ordinary Stock06/25/2026A(1)776A(1)22,647.97D
Class A Ordinary Stock06/25/2026F(2)186.235D$315.9522,461.735D
Class A Ordinary Stock17,736IBy Trust
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
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 Gloria Santona06/29/2026
** Signature of Reporting PersonDate
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

FAQ

What did Aon (AON) director Gloria Santona report in this Form 4?

Gloria Santona reported an annual equity grant and related tax withholding in Aon Class A Ordinary Stock. She received 776 shares and had 186.235 shares withheld to cover taxes, reflecting routine non-employee director compensation rather than open-market trading activity.

How many Aon (AON) shares did Gloria Santona receive as a grant?

She received a grant of 776 Class A Ordinary Shares of Aon. The filing states this is the annual share grant to each non-employee director, with the nominal value of $0.01 per share paid to the issuer under Irish law.

Why were 186.235 Aon (AON) shares withheld from Gloria Santona?

A total of 186.235 Class A Ordinary Shares were withheld by Aon to pay taxes on the equity award. The shares were valued at $315.95 each for this tax-withholding disposition, which is a non-market transaction and not an open-market sale.

How many Aon (AON) shares does Gloria Santona own after these transactions?

After these transactions, Santona directly owned 22,647.97 Class A Ordinary Shares of Aon. In addition, 17,736 Class A Ordinary Shares were reported as held indirectly by a trust, giving visibility into both her direct and trust-related holdings.

Are Gloria Santona’s Aon (AON) transactions open-market buys or sells?

No, the transactions reflect an equity award and tax withholding, not market trades. The Form 4 shows a grant/award acquisition of 776 shares and a tax-withholding disposition of 186.235 shares classified under code “F,” rather than open-market buying or selling.

What does the Form 4 say about Aon (AON) non-employee director compensation?

The filing notes that Class A Ordinary Shares are granted annually to each non-employee director of Aon plc. It also explains that, under Irish law, the reporting person agrees to pay the issuer the nominal value of $0.01 per share for these issued shares.