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Stock Trading History of Wyzga Michael S

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 Wyzga Michael S since year 2005. The trader's CIK number is 1201256. At the time of this reporting, Wyzga Michael S is the Executive VP and CFO of Genzyme Corp . (stock ticker symbol GENZ). See this page for all insider trading activities at Genzyme Corp .

Stock purchases, sales, and option exercises reported by insider *Wyzga Michael S* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-08-12	GENZ	Genzyme Corp	Sale	29,390	79.00	2,321,810
2008-08-12	GENZ	Genzyme Corp	Option Exercise	29,390	35.51	1,043,736
2007-12-17	GENZ	Genzyme Corp	Sale	5,140	74.89	384,934
2007-12-17	GENZ	Genzyme Corp	Option Exercise	5,140	43.36	222,870

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 Wyzga Michael S (Executive VP and CFO of Genzyme Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.