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

Role: President & CEO, Director
Signature: /s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Greg Case
Issuer symbol: AON
Transactions as of: 19 Feb 2026
Net transactions value: $0
Form type: 4
Filing time: 20 Feb 2026, 16:59:21 UTC
Previous filing: 19 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Case Gregory C	President & CEO, Director	200 EAST RANDOLPH ST., CHICAGO	/s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Greg Case	20 Feb 2026	0001322803

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AON	Class A Ordinary Stock	Gift	$0	-7,500	-20%	$0.000000	29,912	19 Feb 2026	By GRAT	F1
transaction	AON	Class A Ordinary Stock	Gift	$0	-7,500	-25%	$0.000000	22,412	19 Feb 2026	By GRAT	F1
transaction	AON	Class A Ordinary Stock	Gift	$0	-11,206	-50%	$0.000000	11,206	19 Feb 2026	By GRAT	F2
transaction	AON	Class A Ordinary Stock	Gift	$0	-11,206	-100%	$0.000000	0	19 Feb 2026	By GRAT	F2
transaction	AON	Class A Ordinary Stock	Gift	$0	+11,206	+6.8%	$0.000000	175,170	19 Feb 2026	By Trust	F2
transaction	AON	Class A Ordinary Stock	Gift	$0	+11,206	+6.8%	$0.000000	175,169	19 Feb 2026	By Trust	F2
holding	AON	Class A Ordinary Stock						933,709	19 Feb 2026	Direct
holding	AON	Class A Ordinary Stock						132,243	19 Feb 2026	By Trust
holding	AON	Class A Ordinary Stock						132,243	19 Feb 2026	By Trust
holding	AON	Class A Ordinary Stock						73,240	19 Feb 2026	By GRAT

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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.
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.