Michael Neller - 13 Feb 2025 Form 4 Insider Report for Aon plc (AON)

Role: Principal Accounting Officer
Signature: /s/ Colby Alexis - Colby Alexis pursuant to a power of attorney from Michael Neller
Issuer symbol: AON
Transactions as of: 13 Feb 2025
Transactions value $: -$285,564
Form type: 4
Filing time: 18 Feb 2025, 19:03:27 UTC
Previous filing: 19 Sep 2024
Next filing: 25 Mar 2025
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	Award		+2.31K	+35.86%		8.76K	13 Feb 2025	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$269K	-688	-7.85%	$390.29	8.08K	13 Feb 2025	Direct	F2
transaction	AON	Class A Ordinary Stock	Options Exercise		+146	+1.81%		8.22K	14 Feb 2025	Direct	F3
transaction	AON	Class A Ordinary Stock	Tax liability	-$17K	-43.9	-0.53%	$386.99	8.18K	14 Feb 2025	Direct	F2
holding	AON	Class A Ordinary Stock						2.64K	13 Feb 2025	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)	Award	$0	+319		$0.00	319	13 Feb 2025	Class A Ordinary Shares	319		Direct	F4, F5
transaction	AON	Restricted Share Unit (Right to Receive)	Options Exercise	$0	-146	-100%	$0.00	0	14 Feb 2025	Class A Ordinary Shares	146		Direct	F4, F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the seventeenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the Organization and Compensation Committee of the Board of Directors on February 13, 2025, based on the Company's performance for the period from January 1, 2022 to December 31, 2024.
F2	Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.
F3	Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.
F4	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.
F5	The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan, as amended and restated, as follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.
F6	A restricted share unit award was granted on February 17, 2022 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 grant.