Aon plc — Director's Dealing 2011

Feb 22, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AON CORP (AOC)
CIK: 0000315293
Period of Report: 2011-02-17

Reporting Person: Meissner Laurel G. (SVP & Global Controller)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-02-17	Restricted Stock Unit Award (Right to Receive)	$	A	2696	Acquired	2014-02-17	Common Stock (2696)	Direct

Footnotes

F1: The restricted stock unit award converts to shares of common stock on a 1-for-1 basis.

F2: The restricted stock unit award will vest in accordance with the terms of the Aon Stock Incentive Plan as follows: 33 1/3% of the awards will vest on each of the first through third anniversaries of the date of grant.