Aon plc — Director's Dealing 2010

Feb 23, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AON CORP (AOC)
CIK: 0000315293
Period of Report: 2010-02-20

Reporting Person: Fung Bernard S (Aon Asia Pacific-Chairman/CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-20	Common Stock	M	744	—	Acquired	4620	Direct
2010-02-22	Common Stock	M	1481	—	Acquired	6101	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-02-20	Restricted Stock Unit Award (Right to Receive)	$	M	744	Disposed	2010-02-20	Common Stock (744)	Direct
2010-02-22	Restricted Stock Unit Award (Right to Receive)	$	M	1481	Disposed	2010-02-22	Common Stock (1481)	Direct

Footnotes

F1: Shares of common stock acquired upon the vesting of a restricted stock unit award.

F2: The restricted stock unit award converts to shares of common stock on a 1-for-1 basis.