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Stock Trading History of Mahar John H

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 Mahar John H since year 2005. The trader's CIK number is 1251514. At the time of this reporting, Mahar John H is the Director of Martek Biosciences Corp (stock ticker symbol MATK).

Stock purchases, sales, and option exercises reported by *Mahar John H* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2006-03-09	MATK	Martek Biosciences Corp	Sale	3,500	33.59	117,567
2006-03-09	MATK	Martek Biosciences Corp	Option Exercise	3,500	32.88	115,062

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 Mahar John H (Director of Martek Biosciences Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.