Jillian Slyfield - 15 Mar 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
Issuer symbol: AON
Transactions as of: 15 Mar 2022
Net transactions value: -$26,763
Form type: 4
Filing time: 17 Mar 2022, 18:59:22 UTC
Previous filing: 15 Mar 2022
Next filing: 24 May 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		+141	+27%		659	15 Mar 2022	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	$15,073	-49	-7.4%	$307.62	610	15 Mar 2022	Direct	F2
transaction	AON	Class A Ordinary Stock	Options Exercise		+109	+18%		719	15 Mar 2022	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	$11,690	-38	-5.3%	$307.62	681	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	-141	-100%	$0.000000^*	0	15 Mar 2022	Class A Ordinary Shares	141		Direct	F3, F4
transaction	AON	Restricted Share Unit (Right to Receive)	Options Exercise	$0	-109	-33%	$0.000000	218	15 Mar 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.