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Stock Trading History of Amon Cristina

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 Amon Cristina since year 2005. The trader's CIK number is 1398009. At the time of this reporting, Amon Cristina is the Director of Mks Instruments Inc . (stock ticker symbol MKSI). See this page for all insider trading activities at Mks Instruments Inc .

Stock purchases, sales, and option exercises reported by insider *Amon Cristina* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-08-07	MKSI	Mks Instruments Inc	Option Exercise	555	21.59	11,982
2008-05-07	MKSI	Mks Instruments Inc	Option Exercise	556	.00	0
2008-02-07	MKSI	Mks Instruments Inc	Option Exercise	555	.00	0
2007-11-07	MKSI	Mks Instruments Inc	Option Exercise	556	.00	0
2007-08-07	MKSI	Mks Instruments Inc	Option Exercise	555	.00	0

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 Amon Cristina (Director of Mks Instruments Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.