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Stock Trading History of Cook William M

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 Cook William M since year 2005. The trader's CIK number is 1226577. At the time of this reporting, Cook William M is the Chairman, President and CEO of Donaldson Co Inc . (stock ticker symbol DCI). See this page for all insider trading activities at Donaldson Co Inc .

Stock purchases, sales, and option exercises reported by insider *Cook William M* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-06-04	DCI	Donaldson Co Inc	Option Exercise	52,000	10.00	520,000
2007-11-29	DCI	Donaldson Co Inc	Option Exercise	14,881	41.15	612,353
2007-09-07	DCI	Donaldson Co Inc	Option Exercise	52,000	11.34	589,680
2006-09-13	DCI	Donaldson Co Inc	Option Exercise	52,000	8.13	422,760

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 Cook William M (Chairman, President and CEO of Donaldson Co Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.