Aon plc — Director's Dealing 2012

Feb 15, 2012

SEC Form 5 — Annual Statement of Changes in Beneficial Ownership

Issuer: AON CORP (AON)
CIK: 0000315293
Period of Report: 2011-12-31

Reporting Person: KNIGHT LESTER B (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-06	Common Stock	G	19997	—	Disposed	35003	Indirect
2011-12-01	Common Stock	M	5082	—	Acquired	9209	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-12-01	Deferred Stock Unit Award (Right to Receive)	$	M	5082	Disposed	2011-12-01	Common Stock (5082)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	25000	Indirect

Footnotes

F1: Due to administrative error, the shares of common stock were not distributed until February 1, 2012.

F2: Shares of common stock acquired upon the vesting of a deferred stock unit award.

F3: Includes shares of common stock acquired pursuant to dividend reinvestment.

F4: The deferred stock unit award converts to shares of common stock on a 1-for-1 basis.