Michael Neller - Sep 15, 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
Stock symbol: AON
Transactions as of: Sep 15, 2023
Transactions value $: -$27,847
Form type: 4
Date filed: 9/19/2023, 04:06 PM
Previous filing: Feb 21, 2023
Next filing: Feb 13, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AON	Class A Ordinary Stock	Options Exercise		+187	+4.24%		4.6K	Sep 15, 2023	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$27.8K	-82.8	-1.8%	$336.16	4.51K	Sep 15, 2023	Direct	F2
holding	AON	Class A Ordinary Stock						2.64K	Sep 15, 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	-187	-49.87%	$0.00	188	Sep 15, 2023	Class A Ordinary Shares	187		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 September 17, 2021 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.