Darren Zeidel - May 19, 2022 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: May 19, 2022
Transactions value $: -$23,920
Form type: 4
Date filed: 5/23/2022, 08:05 PM
Previous filing: Mar 17, 2022
Next filing: Aug 1, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AON	Class A Ordinary Stock	Options Exercise		+157	+1.04%		15.3K	May 19, 2022	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$18.7K	-70	-0.46%	$266.66	15.2K	May 19, 2022	Direct	F2
transaction	AON	Class A Ordinary Stock	Options Exercise		+44	+0.29%		15.3K	May 20, 2022	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$5.25K	-20	-0.13%	$262.71	15.2K	May 20, 2022	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	Restrictive Share Unit (Right to Receive)	Options Exercise	$0	-157	-100%	$0.00^*	0	May 19, 2022	Class A Ordinary Shares	157		Direct	F3, F4
transaction	AON	Restrictive Share Unit (Right to Receive)	Options Exercise	$0	-44	-33.33%	$0.00	88	May 20, 2022	Class A Ordinary Shares	44		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 May 19, 2017 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 20% of the award vests on each of the first through fifth anniversary of the date of grant.
F5	A restricted share unit award was granted on May 21, 2019 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 20% of the award vests on each of the first through fifth anniversary of the date of grant.