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Stock Trading History of Hoffmeister David F

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 Hoffmeister David F since year 2005. The trader's CIK number is 1305975. At the time of this reporting, Hoffmeister David F is the Chief Financial Officer of Invitrogen Corp . (stock ticker symbol IVGN). See this page for all insider trading activities at Invitrogen Corp .

Stock purchases, sales, and option exercises reported by insider *Hoffmeister David F* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-05-13	IVGN	Invitrogen Corp	Option Exercise	4,500	.00	0
2007-12-17	IVGN	Invitrogen Corp	Sale	27,909	94.88	2,648,103
2007-10-15	IVGN	Invitrogen Corp	Option Exercise	50,000	.00	0
2005-11-16	IVGN	Invitrogen Corp	Purchase	1,530	65.02	99,485

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 Hoffmeister David F (Chief Financial Officer of Invitrogen Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.