Darren Zeidel - Feb 16, 2023 Form 4 Insider Report for Aon plc (AON)

Role: General Counsel
Signature: /s/ Julie Cho- Julie Cho pursuant to a power of attorney from Darren Zeidel
Stock symbol: AON
Transactions as of: Feb 16, 2023
Transactions value $: -$1,959,232
Form type: 4
Date filed: 2/21/2023, 06:48 PM
Previous filing: Feb 14, 2023
Next filing: May 23, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AON	Class A Ordinary Stock	Award		+13.9K	+89.86%		29.3K	Feb 16, 2023	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$1.91M	-6.15K	-20.97%	$310.25	23.2K	Feb 16, 2023	Direct	F2
transaction	AON	Class A Ordinary Stock	Options Exercise		+373	+1.61%		23.6K	Feb 17, 2023	Direct	F3
transaction	AON	Class A Ordinary Stock	Tax liability	-$51.5K	-166	-0.7%	$310.27	23.4K	Feb 17, 2023	Direct	F2

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)	Award	$0	+2.61K		$0.00	2.61K	Feb 16, 2023	Class A Ordinary Shares	2.61K		Direct	F4, F5
transaction	AON	Restricted Share Unit (Right to Receive)	Options Exercise	$0	-373	-33.27%	$0.00	748	Feb 17, 2023	Class A Ordinary Shares	373		Direct	F4, F6

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

Explanation of Responses:

Id	Content
F1	Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the fifteenth 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 16, 2023, based on the Company's performance for the period from January 1, 2020 to December 31, 2022.
F2	Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.
F3	Class A Ordinary Shares acquired upon the vesting of a restricted share unit 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 $0.01 per share issued to the reporting person.
F5	The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan as follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.
F6	A restricted share unit award was granted on February 17, 2022 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.