Stock Trading History of Parven Alvin 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 Parven Alvin S since year 2005. The trader's CIK number is 1231950. At the time of this reporting, Parven Alvin S is the Director of Alexion Pharmaceuticals Inc . (stock ticker symbol ALXN). See this page for all insider trading activities at Alexion Pharmaceuticals Inc .

Stock purchases, sales, and option exercises reported by insider *Parven Alvin S* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-06-04	ALXN	Alexion Pharmaceuticals Inc	Sale	6,500	70.57	458,687
2008-06-04	ALXN	Alexion Pharmaceuticals Inc	Option Exercise	6,500	21.76	141,440
2008-02-22	ALXN	Alexion Pharmaceuticals Inc	Sale	2,000	61.35	122,700
2007-10-29	ALXN	Alexion Pharmaceuticals Inc	Option Exercise	22,000	78.93	1,736,355
2006-11-03	ALXN	Alexion Pharmaceuticals Inc	Option Exercise	6,400	38.49	246,318
2005-10-13	ALXN	Alexion Pharmaceuticals Inc	Purchase	1,049	26.74	28,050

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 Parven Alvin S (Director of Alexion Pharmaceuticals Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.