Darren Zeidel - Feb 10, 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 10, 2023
Transactions value $: -$80,589
Form type: 4
Date filed: 2/14/2023, 06:46 PM
Previous filing: Aug 1, 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	Options Exercise		+458	+3.03%		15.6K	Feb 10, 2023	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$64.5K	-203	-1.3%	$317.82	15.4K	Feb 10, 2023	Direct	F2
transaction	AON	Class A Ordinary Stock	Options Exercise		+112	+0.73%		15.5K	Feb 13, 2023	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$16.1K	-50	-0.32%	$321.43	15.4K	Feb 13, 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)	Options Exercise	$0	-458	-50%	$0.00	458	Feb 10, 2023	Class A Ordinary Shares	458		Direct	F3, F4
transaction	AON	Restrictive Share Unit (Right to Receive)	Options Exercise	$0	-112	-100%	$0.00^*	0	Feb 13, 2023	Class A Ordinary Shares	112		Direct	F3, F5

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

Explanation of Responses:

Id	Content
F1	Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
F2	Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.
F3	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.
F4	A restricted share unit award was granted on February 11, 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.
F5	A restricted share unit award was granted on February 13, 2020 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.