Michael Neller - 10 Feb 2023 Form 4 Insider Report for Aon plc (AON)

Role: Principal Accounting Officer
Signature: /s/ Julie Cho - Julie Cho pursuant to a power of attorney from Michael Neller
Issuer symbol: AON
Transactions as of: 10 Feb 2023
Net transactions value: -$31,616
Form type: 4
Filing time: 14 Feb 2023, 18:54:35 UTC
Previous filing: 20 Sep 2022
Next filing: 21 Feb 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		+163	+8%		2,195	10 Feb 2023	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	$18,116	-57	-2.6%	$317.82	2,138	10 Feb 2023	Direct	F2
transaction	AON	Class A Ordinary Stock	Options Exercise		+120	+5.6%		2,258	13 Feb 2023	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	$13,500	-42	-1.9%	$321.43	2,216	13 Feb 2023	Direct	F2
holding	AON	Class A Ordinary Stock						2,636	10 Feb 2023	By LLC

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	-163	-50%	$0.000000	163	10 Feb 2023	Class A Ordinary Shares	163		Direct	F3, F4
transaction	AON	Restrictive Share Unit (Right to Receive)	Options Exercise	$0	-120	-100%	$0.000000^*	0	13 Feb 2023	Class A Ordinary Shares	120		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 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 11, 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.
F5	A restricted share unit award was granted on February 13, 2020 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.