James Platt - 15 Mar 2022 Form 4 Insider Report for Aon plc (AON)

Role: Chief Operating Officer
Signature: /s/ Julie Cho - Julie Cho pursuant to a power of attorney from James Platt
Issuer symbol: AON
Transactions as of: 15 Mar 2022
Net transactions value: -$100,284
Form type: 4
Filing time: 17 Mar 2022, 18:55:11 UTC
Previous filing: 15 Mar 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AON	Class A Ordinary Stock	Options Exercise		+377	+8.9%		4,602	15 Mar 2022	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	$54,756	-178	-3.9%	$307.62	4,424	15 Mar 2022	Direct	F2
transaction	AON	Class A Ordinary Stock	Options Exercise		+314	+7.1%		4,738	15 Mar 2022	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	$45,528	-148	-3.1%	$307.62	4,590	15 Mar 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	Restricted Share Unit (Right to Receive)	Options Exercise	$0	-377	-100%	$0.000000^*	0	15 Mar 2022	Class A Ordinary Shares	377		Direct	F3, F4
transaction	AON	Restricted Share Unit (Right to Receive)	Options Exercise	$0	-314	-33%	$0.000000	629	15 Mar 2022	Class A Ordinary Shares	314		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 withholding 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 $0.01 per share issued to the reporting person.
F4	A restricted share unit award was granted on March 15, 2019 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 March 15, 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.