Stock Trading History of Hauffe Dietrich

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 Hauffe Dietrich since year 2005. The trader's CIK number is 1354302. At the time of this reporting, Hauffe Dietrich is the Vice President of Dionex Corp /de (stock ticker symbol DNEX).

Stock purchases, sales, and option exercises reported by *Hauffe Dietrich* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-11-20	DNEX	Dionex Corp /de	Option Exercise	2,286	44.90	102,649
2007-11-20	DNEX	Dionex Corp /de	Sale	2,286	85.00	194,310
2007-03-07	DNEX	Dionex Corp /de	Sale	3,000	63.52	190,560
2007-03-07	DNEX	Dionex Corp /de	Option Exercise	3,000	43.33	129,991
2006-02-24	DNEX	Dionex Corp /de	Sale	5,500	54.32	298,760
2006-02-24	DNEX	Dionex Corp /de	Option Exercise	5,500	28.12	154,632

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 Hauffe Dietrich (Vice President of Dionex Corp /de at the time of this reporting) see the Securities and Exchange Commission (SEC) website.