Stock Trading History of Walker Thomas Kirk

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 Walker Thomas Kirk since year 2005. The trader's CIK number is 1278889. At the time of this reporting, Walker Thomas Kirk is the Executive VP of Costco Wholesale Corp /new . (stock ticker symbol Cost). See this page for all insider trading activities at Costco Wholesale Corp /new .

Stock purchases, sales, and option exercises reported by insider *Walker Thomas Kirk* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-03-27	COST	Costco Wholesale Corp /new	Sale	60,000	.00	0
2008-03-27	COST	Costco Wholesale Corp /new	Option Exercise	60,000	34.47	2,068,200
2007-01-12	COST	Costco Wholesale Corp /new	Option Exercise	48,000	36.27	1,740,960
2007-01-12	COST	Costco Wholesale Corp /new	Sale	48,000	55.82	2,679,580
2006-04-28	COST	Costco Wholesale Corp /new	Sale	280,000	54.35	15,219,036
2006-04-28	COST	Costco Wholesale Corp /new	Option Exercise	280,000	34.26	9,593,941

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 Walker Thomas Kirk (Executive VP of Costco Wholesale Corp /new at the time of this reporting) see the Securities and Exchange Commission (SEC) website.