Aon plc — Director's Dealing 2025

Feb 19, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Aon plc (AON)
CIK: 0000315293
Period of Report: 2025-02-13

Reporting Person: Zeidel Darren (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-13	Class A Ordinary Stock	A	8222	—	Acquired	31626.409	Direct
2025-02-13	Class A Ordinary Stock	F	3266.169	$390.29	Disposed	28360.24	Direct
2025-02-14	Class A Ordinary Stock	M	374	—	Acquired	28734.24	Direct
2025-02-14	Class A Ordinary Stock	F	165.678	$386.99	Disposed	28568.562	Direct
2025-02-14	Class A Ordinary Stock	M	870	—	Acquired	29438.562	Direct
2025-02-14	Class A Ordinary Stock	F	385.401	$386.99	Disposed	29053.161	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-13	Restricted Share Unit (Right to Receive)	$	A	628	Acquired	2028-02-13	Class A Ordinary Shares (628)	Direct
2025-02-14	Restricted Share Unit (Right to Receive)	$	M	374	Disposed	2025-02-17	Class A Ordinary Shares (374)	Direct
2025-02-14	Restricted Share Unit (Right to Receive)	$	M	870	Disposed	2026-02-16	Class A Ordinary Shares (870)	Direct

Footnotes

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.

F7: A restricted share unit award was granted on February 16, 2023 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.