Jillian Slyfield - 22 Feb 2023 Form 4 Insider Report for Aon plc (AON)

Role: Chief Innovation Officer
Signature: /s/ Julie Cho- Julie Cho pursuant to power of attorney from Jillian Slyfield
Issuer symbol: AON
Transactions as of: 22 Feb 2023
Transactions value $: -$26,829
Form type: 4
Filing time: 24 Feb 2023, 19:22:59 UTC
Previous filing: 21 Feb 2023
Next filing: 15 Mar 2023
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		+232	+24%		1,206	22 Feb 2023	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$26,828	-88	-7.3%	$304.87	1,118	22 Feb 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	-232	-50%	$0	232	22 Feb 2023	Class A Ordinary Shares	232		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 February 22, 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.