Aon plc — Director's Dealing 2011

Sep 20, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AON CORP (AON)
CIK: 0000315293
Period of Report: 2011-09-16

Reporting Person: SANTONA GLORIA (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-09-16	Phantom Stock	$	A	624.716	Acquired		Common Stock (624.716)	Direct

Footnotes

F1: The phantom stock units convert to shares of Aon common stock on a 1-for-1 basis.

F2: The phantom stock units represent an outside director fee that was deferred into a directors's deferred compensation arrangement. A portion of the fee was received for acting as chairperson of a Board Committee.

F3: The phantom stock units will be paid in cash or shares of Aon common stock on a distribution date elected by the reporting person.

F4: Includes shares acquired pursuant to dividend reinvestment.