Aon plc — Director's Dealing 2012

Feb 21, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AON CORP (AON)
CIK: 0000315293
Period of Report: 2012-02-16

Reporting Person: Levin Matthew (EVP - Head of Global Strategy)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-02-16	Restricted Stock Unit Award (Right to Receive)	$	A	2944	Acquired	2015-02-16	Common Stock (2944)	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.