Aon plc — Director's Dealing 2010

Feb 9, 2010

SEC Form 5 — Annual Statement of Changes in Beneficial Ownership

Issuer: AON CORP (AOC)
CIK: 0000315293
Period of Report: 2009-12-31

Reporting Person: Besio Gregory J (EVP/CAO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-11-23	Common Stock	G	260	—	Disposed	2171	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	4585	Indirect

Footnotes

F1: Represents a gift of shares by the reporting person to the Fenwick Foundation.

F2: Includes 378 shares held through the Aon employee stock purchase plan.