Jillian Slyfield - Mar 15, 2023 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, 2023
Transactions value $: -$10,862
Form type: 4
Date filed: 3/17/2023, 04:34 PM
Previous filing: Mar 15, 2023
Next filing: May 23, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AON	Class A Ordinary Stock	Options Exercise		+109	+9.13%		1.3K	Mar 15, 2023	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$10.9K	-38	-2.92%	$285.85	1.26K	Mar 15, 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	-109	-50%	$0.00	109	Mar 15, 2023	Class A Ordinary Shares	109		Direct	F3, F4

* 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 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.