Frank Witney, President, Chief Executive Officer and Director

Dr.Witney has served as a Director, President and Chief Executive Officer since April 30, 2009. Prior to joining the Company and from December 2008 until April 2009, Dr. Witney, was Executive Vice President and Chief Commercial Officer of Affymetrix, Inc., a manufacturer of consumables and systems for genetic analysis in the life sciences and clinical healthcare markets. Dr.Witney assumed this position after Affymetrix’s acquisition of Panomics, Inc., a company that offered products for a wide variety of low to mid-plex genetic, protein and cellular analysis applications, where Dr. Witney previously served as President and Chief Executive Officer from July 2002 until December 2008. From November 2001 to July 2002, Dr. Witney was President of Drug Discovery Tools at PerkinElmer Life Sciences, a provider of instruments, chemicals and reagents to the analytical sciences, genetic screening, bio-discovery and laboratory services markets. Dr. Witney assumed this position after PerkinElmer’s acquisition of Packard BioScience Company, a manufacturer of instruments and reagents for use in drug discovery and other life sciences research, where previously he was President and Chief Operating Officer from April 2000 to November 2001. From1983 through 2000, Dr.Witney held a series of management positions at Bio-Rad Laboratories, a manufacturer of life science research and clinical diagnostic products, most recently as Group Operations Manager of the Life Science Group. Dr. Witney is also a director of Applied Precision, Inc. and One Lambda, Inc.

Bruce Barton, Executive Vice President and Chief Commercial Officer

Mr. Barton has served as Executive Vice President and Chief Commercial Officer since January 7, 2010. Previously and since August 1, 2008, he served as Senior Vice President of Global Sales and Service and since September 2007, he served as Vice President of Sales and Service International. From October 2003 to September 2007, he served as Vice President Sales and Service Asia/Pacific. Since joining us in 1987, he has served in numerous positions in the Sales, Accounting and Finance departments.

David Fairbanks, Vice President, Information Technology

Mr. Fairbanks has served as Vice President of Information Technology since May 2007. Prior to joining Dionex and since June 2005, he served as Chief Information Officer of Silicon Graphics, Inc. (which has since changed its name to Graphics Properties Holdings, Inc.), which was at the time a leading provider of products, services, and solutions for use in high-performance computing and data management. Prior to that, from 1993 to 2005, Mr. Fairbanks served in various senior director roles in Information Technology at Silicon Graphics, Inc.

Shawn Heberling, Vice President, Asia/Pacific Sales and Service

Mr. Heberling has served as Vice President AP Sales and Service since January 7, 2010. Previously and since December 2007, he served as Director AP Sales and Service and since April 2000, he served as Manager, AP Sales and Service. From May 1997 to April 2000, he served as Manager AP Sales and Service Support. Since joining us 1984, he has served in numerous positions in the Corporate Marketing and Corporate R&D departments.

Dietrich Hauffe, Vice President, Global Marketing

Dr. Hauffe has served as Vice President of Global Marketing since January 2006. Between 2000 and 2006, Dr. Hauffe served as General Manager of Dionex GmbH, our subsidiary in Idstein, Germany. Prior to that, from 1997 to 2000, he served as a Product Manager for Qiagen’s Instrumentation in its headquarter in Hilden, Germany, and as Senior Product Manager for Qiagen Instruments since its acquisition in 1998. From 1993 to 1997, Dr. Hauffe served as Product Manager, Life Sciences, for Dionex GmbH in Europe.

Peter Jochum, Senior Vice President, Life Sciences Business Unit

Dr. Jochum has served as Senior Vice President, Life Sciences Business Unit since August 1, 2008. Previously and since October 2000, Dr. Jochum served as Vice President of our Life Sciences Business Unit (LSBU). Prior to that and since joining us in October 1998, he served as Managing Director of our subsidiary, Dionex Softron. Prior to joining us, he served as Managing Director of Softron GmbH, which we acquired in 1998.

Craig McCollam, Executive Vice President, Finance and Administration and Chief Financial Officer

Mr. McCollam has served as Executive Vice President, Finance and Administration and Chief Financial Officer since August 4, 2009. Mr. McCollam served as Senior Vice President, Finance and Administration and Chief Financial Officer from August 1, 2008 until August 4, 2009. Previously and since October 1999, Mr. McCollam served as Vice President Finance and Administration and Chief Financial Officer. Prior to that and since joining us in 1993, he served as Director of Finance and Corporate Controller.

Mike Pettigrew, Vice President, North America Sales and Service

Mr. Pettigrew has served as Vice President North America Sales and Service at Dionex since December 2009. Prior to Dionex, Mike served as Vice President Business Development at Magellan Biosciences from March 2008 through December 2009. Mike served as Vice President Sales at GE Healthcare Life Sciences from 2004-2008, holding responsibility for a $200 million sales region, managing a sales portfolio of products for research and development and manufacturing customers across the pharmaceutical and biotech industries. Previously, he was Vice President Genomics Marketing at Amersham Biosciences - a leading global provider of products and services used in gene, protein, and cell research, drug discovery and development, and biopharmaceutical manufacturing. (GE Healthcare acquired Amersham in 2004.)

John Plohetski, Senior Vice President, Chemical Analysis Business Unit

Mr. Plohetski has served as Senior Vice President of our Chemical Analysis Business Unit since December 2006. From March 2003 to November 2006, he served as our Director of Manufacturing. Prior to joining us in 2003, Mr. Plohetski served as Vice President of Engineering at Carl Zeiss, Inc. from 1982 to 2002.

Christopher Pohl, Senior Vice President, Research and Development and Chief Science Officer

Mr. Pohl has served as Senior Vice President, Research and Development and Chief Science Officer since August 1, 2008. Previously and since May 2004, Mr. Pohl served as Vice President of Research and Development and Chief Technology Officer. Prior to that and since June 2001, he served as Vice President of Research and Development. From March 2000 to June 2001, Mr. Pohl served as Vice President, Research and Development of Ciphergen Biosystems, Inc., a provider of enabling tools for proteomics. From 1979 to 2000, he served as our Vice President of Consumables and in various other capacities at the Company.

Dr. Claudio Umile, Vice President, Europe Sales and Service

Dr. Umile has served as Vice President, Europe Sales and Service since January 2010. From January 2009 to December 2009 he served as our Director, EU Sales and Service. Between 1997 and 2008 Dr. Umile served as General Manager of Dionex Austria GmbH, our subsidiary in Vienna, Austria. Prior to that and since joining us in 1997 he worked at the Dionex distributor in Austria, Salus Braumapharm from 1986 to 1996.