Stock Trading History of Hobor Nancy A

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 Hobor Nancy A since year 2005. The trader's CIK number is 1012332. At the time of this reporting, Hobor Nancy A is the Sr VP-Communications & Inv Rel of Grainger W W Inc (stock ticker symbol GWW).

Stock purchases, sales, and option exercises reported by *Hobor Nancy A* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-05-23	GWW	Grainger W W Inc	Option Exercise	15,710	41.50	651,965
2007-05-23	GWW	Grainger W W Inc	Sale	15,710	86.10	1,352,631
2007-04-20	GWW	Grainger W W Inc	Sale	15,000	83.00	1,245,000
2007-04-20	GWW	Grainger W W Inc	Option Exercise	15,000	54.61	819,150
2006-04-20	GWW	Grainger W W Inc	Sale	20,000	79.52	1,590,480
2006-04-20	GWW	Grainger W W Inc	Option Exercise	20,000	37.50	750,000

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 Hobor Nancy A (Sr VP-Communications & Inv Rel of Grainger W W Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.