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Stock Trading History of Dubin Steve

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 Dubin Steve since year 2005. The trader's CIK number is 1265123. At the time of this reporting, Dubin Steve is the President of Martek Biosciences Corp (stock ticker symbol MATK).

Stock purchases, sales, and option exercises reported by *Dubin Steve* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-12-18	MATK	Martek Biosciences Corp	Purchase	1,000	28.15	28,150
2007-03-30	MATK	Martek Biosciences Corp	Purchase	2,500	20.28	50,698
2006-09-11	MATK	Martek Biosciences Corp	Purchase	4,000	20.69	82,763
2005-12-22	MATK	Martek Biosciences Corp	Option Exercise	4,000	17.18	68,720

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 Dubin Steve (President of Martek Biosciences Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.