Stock Trading History of Chen Yc

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 Chen Yc since year 2005. The trader's CIK number is 1275082. At the time of this reporting, Chen Yc is the Group President of Grainger W W Inc . (stock ticker symbol GWW). See this page for all insider trading activities at Grainger W W Inc .

Stock purchases, sales, and option exercises reported by insider *Chen Yc* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-03-17	GWW	Grainger W W Inc	Purchase	2,100	72.05	151,305
2007-10-19	GWW	Grainger W W Inc	Sale	3,501	90.47	316,727
2007-10-19	GWW	Grainger W W Inc	Sale	7,209	89.96	648,542
2007-10-19	GWW	Grainger W W Inc	Option Exercise	10,710	37.50	401,625
2007-04-26	GWW	Grainger W W Inc	Option Exercise	10,120	43.27	437,900
2007-04-26	GWW	Grainger W W Inc	Sale	10,120	84.06	850,687
2007-02-01	GWW	Grainger W W Inc	Sale	5,750	77.12	443,459
2007-02-01	GWW	Grainger W W Inc	Option Exercise	5,750	48.62	279,593

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 Chen Yc (Group President of Grainger W W Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.