Gregory C. Case - 19 Feb 2026 Form 4 Insider Report for Aon plc (AON)

Reporting relationship: President & CEO, Director
Issuer ticker: AON
Reported as of: 19 Feb 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 20 Feb 2026, 16:59:21 UTC
Prior SEC filing: 19 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Greg Case

Key filing fact

Gregory C. Case filed Form 4 for Aon plc (AON) on 20 Feb 2026.

Key facts

This page summarizes Gregory C. Case's Form 4 filing for Aon plc (AON).
6 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 20 Feb 2026, 16:59.

Change

Previous filing in this sequence was filed on 19 Feb 2026.
Current net transaction value: $0.

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 0001322803 Primary reporting owner

Case Gregory C

Relationship: President & CEO, Director
Address: 200 EAST RANDOLPH ST., CHICAGO
Signature: /s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Greg Case
Signature date: 20 Feb 2026

Reported non-derivative transactions

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

AON transaction

Class A Ordinary Stock

Gift

Transaction value: $0
Shares: -7,500
Change %: -20%
Price: $0.000000
Shares after: 29,912
Date: 19 Feb 2026
Ownership: By GRAT
Footnotes: F1

AON transaction

Class A Ordinary Stock

Gift

Transaction value: $0
Shares: -7,500
Change %: -25%
Price: $0.000000
Shares after: 22,412
Date: 19 Feb 2026
Ownership: By GRAT
Footnotes: F1

AON transaction

Class A Ordinary Stock

Gift

Transaction value: $0
Shares: -11,206
Change %: -50%
Price: $0.000000
Shares after: 11,206
Date: 19 Feb 2026
Ownership: By GRAT
Footnotes: F2

AON transaction

Class A Ordinary Stock

Gift

Transaction value: $0
Shares: -11,206
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 19 Feb 2026
Ownership: By GRAT
Footnotes: F2

AON transaction

Class A Ordinary Stock

Gift

Transaction value: $0
Shares: +11,206
Change %: +6.8%
Price: $0.000000
Shares after: 175,170
Date: 19 Feb 2026
Ownership: By Trust
Footnotes: F2

AON transaction

Class A Ordinary Stock

Gift

Transaction value: $0
Shares: +11,206
Change %: +6.8%
Price: $0.000000
Shares after: 175,169
Date: 19 Feb 2026
Ownership: By Trust
Footnotes: F2

AON holding

Class A Ordinary Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 933,709
Date: 19 Feb 2026
Ownership: Direct

AON holding

Class A Ordinary Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 132,243
Date: 19 Feb 2026
Ownership: By Trust

AON holding

Class A Ordinary Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 132,243
Date: 19 Feb 2026
Ownership: By Trust

AON holding

Class A Ordinary Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 73,240
Date: 19 Feb 2026
Ownership: By GRAT

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Upon termination of the GRAT on February 19, 2026, the reporting person transferred 15,000 shares in two separate transactions by gift, each involving the disposition of 7,500 shares.

Footnote F2

Upon termination of the GRAT on February 19, 2026, the reporting person transferred 22,412 shares to two separate trusts by gift, each of which acquired 11,206 shares.