Mindy F. Simon - 12 Feb 2026 Form 4 Insider Report for Aon plc (AON)

Reporting relationship: Chief Operating Officer
Issuer ticker: AON
Reported as of: 12 Feb 2026
Net transaction value: -$782,901
SEC form: 4
Accepted by SEC: 17 Feb 2026, 17:17:57 UTC
Prior SEC filing: 18 Nov 2025
Source filing: View source filing
Reporting owner signature: /s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Mindy Simon

Key filing fact

Mindy F. Simon filed Form 4 for Aon plc (AON) on 17 Feb 2026.

Key facts

This page summarizes Mindy F. Simon's Form 4 filing for Aon plc (AON).
6 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 17 Feb 2026, 17:17.

Change

Previous filing in this sequence was filed on 18 Nov 2025.
Current net transaction value: -$782,901.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001925598 Primary reporting owner

Simon Mindy F.

Relationship: Chief Operating Officer
Address: 200 EAST RANDOLPH ST., CHICAGO
Signature: /s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Mindy Simon
Signature date: 17 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AON transaction

Class A Ordinary Stock

Award

Transaction value
Shares: +5,550
Change %: +175%
Price
Shares after: 8,729
Date: 12 Feb 2026
Ownership: Direct
Footnotes: F1

AON transaction

Class A Ordinary Stock

Tax liability

Transaction value: $747,889
Shares: -2,378
Change %: -27%
Price: $314.49
Shares after: 6,351
Date: 12 Feb 2026
Ownership: Direct
Footnotes: F2

AON transaction

Class A Ordinary Stock

Options Exercise

Transaction value
Shares: +254
Change %: +4%
Price
Shares after: 6,605
Date: 13 Feb 2026
Ownership: Direct
Footnotes: F3

AON transaction

Class A Ordinary Stock

Tax liability

Transaction value: $35,013
Shares: -109
Change %: -1.6%
Price: $321.70
Shares after: 6,496
Date: 13 Feb 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

AON transaction Derivative

Restricted Share Unit (Right to Receive)

Award

Transaction value: $0
Shares: +1,113
Change %
Price: $0.000000
Shares after: 1,113
Date: 12 Feb 2026
Ownership: Direct
Underlying class: Class A Ordinary Shares
Underlying amount: 1,113
Exercise price
Footnotes: F4, F5

AON transaction Derivative

Restricted Share Unit (Right to Receive)

Options Exercise

Transaction value: $0
Shares: -254
Change %: -33%
Price: $0.000000
Shares after: 508
Date: 13 Feb 2026
Ownership: Direct
Underlying class: Class A Ordinary Shares
Underlying amount: 254
Exercise price
Footnotes: F4, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the eighteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the Organization and Compensation Committee of the Board of Directors on February 12, 2026, based on the Company's performance for the period from January 1, 2023 to December 31, 2025.

Footnote F2

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

Footnote F3

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

Footnote F4

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.

Footnote F5

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

Footnote F6

A restricted share unit award was granted on February 13, 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.