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Stock Trading History of Black David

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 Black David since year 2005. The trader's CIK number is 1286549. At the time of this reporting, Black David is the Pres, Drilling Prod & Services of Grant Prideco Inc (stock ticker symbol GRP).

Stock purchases, sales, and option exercises reported by *Black David* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-06-04	GRP	Grant Prideco Inc	Sale	18,000	58.07	1,045,254
2007-05-18	GRP	Grant Prideco Inc	Sale	11,000	57.09	627,997
2007-03-29	GRP	Grant Prideco Inc	Sale	10,000	49.48	494,754
2006-04-21	GRP	Grant Prideco Inc	Sale	15,000	53.78	806,676

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 Black David (Pres, Drilling Prod & Services of Grant Prideco Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.