Stock Trading History of Ohalleran Michael D

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Ohalleran Michael D since year 2005. The trader's CIK number is 1023265. At the time of this reporting, Ohalleran Michael D is the Senior Exec VP of Aon Corp (stock ticker symbol AOC).

Stock purchases, sales, and option exercises reported by *Ohalleran Michael D* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-05-30	AOC	Aon Corp	Sale	23,466	42.98	1,008,568
2007-05-30	AOC	Aon Corp	Sale	177,469	42.95	7,621,991
2007-05-30	AOC	Aon Corp	Option Exercise	177,469	23.94	4,248,164
2007-05-01	AOC	Aon Corp	Option Exercise	2,250	.00	0
2007-03-16	AOC	Aon Corp	Option Exercise	1,942	.00	0
2007-01-02	AOC	Aon Corp	Option Exercise	20,250	.00	0
2006-05-01	AOC	Aon Corp	Option Exercise	4,500	.00	0
2006-01-02	AOC	Aon Corp	Option Exercise	31,500	35.97	1,133,055
2005-08-12	AOC	Aon Corp	Sale	75,000	29.57	2,217,825

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Ohalleran Michael D (Senior Exec VP of Aon Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.