Aon plc — Director's Dealing 2010

Nov 29, 2010

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: AON CORP (AOC)
CIK: 0000315293
Period of Report: 2010-11-19

Reporting Person: Clement Philip (CMO)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	23637	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Restricted Stock Unit Award (Right to Receive)	$	2011-03-13	Common Stock (1238)		Direct
Restricted Stock Unit Award (Right to Receive)	$	2012-02-20	Common Stock (1745)		Direct
Restricted Stock Unit Award (Right to Receive)	$	2013-02-25	Common Stock (4696)		Direct
Employee Stock Option (Right to Buy)	$41.195	2012-03-16	Common Stock (7206)		Direct
Employee Stock Option (Right to Buy)	$37.10	2013-03-15	Common Stock (10782)		Direct
Employee Stock Option (Right to Buy)	$40.91	2014-03-13	Common Stock (10267)		Direct
Employee Stock Option (Right to Buy)	$38.93	2015-03-19	Common Stock (15413)		Direct

Footnotes

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

F2: Of this amount, 873 restricted stock units will vest on February 20, 2011, and 872 restricted stock units will vest on February 20, 2012.

F3: Of this amount, 1,566 restricted stock units will vest on February 25, 2011, and 1,565 restricted stock units will vest on each of February 25, 2012 and February 25, 2013.

F4: The options are exercisable immediately.

F5: Of the shares represented by this option, 6,845 are exercisable immediately. The remaining 3,422 options vest on March 13, 2011.

F6: Of the shares represented by this option, 5,138 are exercisable immediately. Of the remaining options, 5,138 options vest on March 19, 2011, and 5,137 vest on March 19, 2012.