Gregory C. Case - Feb 10, 2023 Form 4 Insider Report for Aon plc (AON)

Role: Chief Executive Officer, Director
Signature: /s/ Julie Cho - Julie Cho pursuant to a power of attorney from Greg Case
Stock symbol: AON
Transactions as of: Feb 10, 2023
Transactions value $: -$235,505
Form type: 4
Date filed: 2/14/2023, 07:37 PM
Previous filing: May 23, 2022
Next filing: Feb 21, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AON	Class A Ordinary Stock	Gift	$0	-70.7K	-50%	$0.00	70.7K	Nov 10, 2022	By GRAT	F1
transaction	AON	Class A Ordinary Stock	Gift	$0	-70.7K	-100%	$0.00^*	0	Nov 10, 2022	By GRAT	F1
transaction	AON	Class A Ordinary Stock	Gift	$0	+70.7K	+94.49%	$0.00	145K	Nov 10, 2022	By Trust	F1
transaction	AON	Class A Ordinary Stock	Gift	$0	+70.7K	+94.49%	$0.00	145K	Nov 10, 2022	By Trust	F1
transaction	AON	Class A Ordinary Stock	Gift	$0	-16.7K	-3.79%	$0.00	424K	Dec 9, 2022	Direct	F1
transaction	AON	Class A Ordinary Stock	Options Exercise		+1.77K	+0.42%		426K	Feb 10, 2023	Direct	F2
transaction	AON	Class A Ordinary Stock	Tax liability	-$236K	-741	-0.17%	$317.82	425K	Feb 10, 2023	Direct	F3
holding	AON	Class A Ordinary Stock						122K	Feb 10, 2023	By Trust
holding	AON	Class A Ordinary Stock						122K	Feb 10, 2023	By Trust
holding	AON	Class A Ordinary Stock						400K	Feb 10, 2023	By GRAT	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AON	Restricted Share Unit (Right to Receive)	Options Exercise	$0	-1.77K	-50%	$0.00	1.77K	Feb 10, 2023	Class A Ordinary Shares	1.77K		Direct	F4, F5

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

Explanation of Responses:

Id	Content
F1	On November 10, 2022, the GRAT returned 141,311 shares to the reporting person as an annuity payment. Also on November 10, 2022, the GRAT transferred 70,684 and 70,683 shares to trusts reported as indirectly owned by the reporting person. On November 29, 2022, the reporting person contributed 400,000 shares previously held as direct to a new GRAT.
F2	Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
F3	Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.
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 US$0.01 per share issued to the reporting person.
F5	A restricted share unit award was granted on February 12, 2021 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.