Michael Neller - Mar 14, 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
Stock symbol: AON
Transactions as of: Mar 14, 2025
Transactions value $: -$9,893
Form type: 4
Date filed: 3/25/2025, 06:43 PM
Previous filing: Feb 18, 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	Options Exercise		+56	+0.68%		8.23K	Mar 14, 2025	Direct	F1
transaction	AON	Class A Ordinary Stock	Tax liability	-$9.89K	-24.8	-0.3%	$398.79	8.21K	Mar 14, 2025	Direct	F2
holding	AON	Class A Ordinary Stock						2.64K	Mar 14, 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)	Options Exercise	$0	-56	-32.94%	$0.00	114	Mar 14, 2025	Class A Ordinary Shares	56		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 $0.01 per share issued to the reporting person.
F4	A restricted share unit award was granted on March 15, 2024 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.