Jillian Slyfield - Mar 15, 2022 Form 4 Insider Report for Aon plc (AON)

Role: Chief Innovation Officer
Signature: /s/ Julie Cho - Julie Cho pursuant to a power of attorney from Jillian Slyfield
Stock symbol: AON
Transactions as of: Mar 15, 2022
Transactions value $: -$26,763
Form type: 4
Date filed: 3/17/2022, 06:59 PM
Previous filing: Mar 15, 2022
Next filing: May 24, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AON	Class A Ordinary Stock	Options Exercise		+141	+27.19%		659	Mar 15, 2022	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$15.1K	-49	-7.43%	$307.62	610	Mar 15, 2022	Direct	F2
transaction	AON	Class A Ordinary Stock	Options Exercise		+109	+17.85%		719	Mar 15, 2022	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$11.7K	-38	-5.28%	$307.62	681	Mar 15, 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	-141	-100%	$0.00^*	0	Mar 15, 2022	Class A Ordinary Shares	141		Direct	F3, F4
transaction	AON	Restricted Share Unit (Right to Receive)	Options Exercise	$0	-109	-33.33%	$0.00	218	Mar 15, 2022	Class A Ordinary Shares	109		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.