Aon plc — Director's Dealing 2013

Feb 21, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Aon plc (AON)
CIK: 0000315293
Period of Report: 2013-02-19

Reporting Person: McGill Stephen P (Chairman/CEO - ARS)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-02-19	Class A Ordinary Shares	M	30324	$37.10	Acquired	201392	Direct
2013-02-19	Class A Ordinary Shares	S	24575	$57.814	Disposed	176817	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-02-19	Employee Stock Option (Right to Buy)	$37.10	M	30324	Disposed	2013-03-15	Class A Ordinary Shares (30324)	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $57.78 to $57.85, inclusive. The reporting person undertakes to provide to Aon plc, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2: Vesting occurred in accordance with the terms of the Aon Stock Incentive Plan as follows: 33.34% of the options vested on the first anniversary of the date of grant, and 33.33% of the options vested on each of the second and third anniversaries of the date of grant.

F3: Stock option granted pursuant to the Aon Stock Incentive Plan.