Aon plc — Director's Dealing 2013

Feb 20, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Aon plc (AON)
CIK: 0000315293
Period of Report: 2013-02-16

Reporting Person: Besio Gregory J (EVP/Chief HR Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-02-16	Class A Ordinary Shares	M	1595	—	Acquired	98869.65	Direct
2013-02-16	Class A Ordinary Shares	F	749	$57.00	Disposed	98120.65	Direct
2013-02-17	Class A Ordinary Shares	M	1854	—	Acquired	99974.65	Direct
2013-02-17	Class A Ordinary Shares	F	871	$57.00	Disposed	99103.65	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-02-16	Restricted Stock Unit (Right to Receive)	$	M	1595	Disposed	2015-02-16	Class A Ordinary Shares (1595)	Direct
2013-02-17	Restricted Stock Unit (Right to Receive)	$	M	1854	Disposed	2014-02-17	Class A Ordinary Shares (1854)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Ordinary Shares	7991	Indirect

Footnotes

F1: Class A Ordinary Shares acquired upon the vesting of a restricted stock unit award.

F2: Class A Ordinary Shares withheld by the issuer for the payment of withholding taxes in connection with the vesting of a restricted stock unit award.

F3: The restricted stock unit award converts to Class A Ordinary Shares on a 1-for-1 basis. In accordance with U.K. law, the reporting person agreed to pay the issuer the nominal value of US$0.01 per share issued to the reporting person.

F4: 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.