CCMP CMC Materials Inc

Cabot Microelectronics Appoints Dr. Clifford L. Spiro as Vice President, Research and Development AURORA, Ill., Dec. 1 /PRNewswire-FirstCall/ -- Cabot Microelectronics Corp. , the leading supplier of chemical mechanical planarization (CMP) slurries to the semiconductor industry, announced today the appointment of Clifford L. Spiro to the position of Vice President, Research and Development. Dr. Spiro reports directly to William P. Noglows, Cabot Microelectronics' Chairman and Chief Executive Officer. Dr. Spiro joins Cabot Microelectronics after serving as Vice President of Research and Development, Ondeo-Nalco, a multi-billion dollar technology and industrial process company. Prior to his position at Ondeo-Nalco, Dr. Spiro held senior technology and R&D management positions at the General Electric Company. Spiro's almost 25 years of experience as a technology executive and scientist encompasses a variety of industries and applications, and includes responsibilities such as business development initiatives and the application of "six sigma" processes to R&D activities and organizations. "Cliff Spiro brings to our Company outstanding R&D and technology management experience and success in world-class, global technology businesses, and we are delighted that he has chosen to join us and contribute to the further growth of Cabot Microelectronics," stated Mr. Noglows. "His demonstrated achievements with large, diverse companies, R&D organizations and technology areas, along with his experience in the technology side of business development and quality management, will help our R&D organization and company reach the 'next level', and we look forward to his leadership on our team." "Cabot Microelectronics is a technology and market leader in a dynamic area of the semiconductor industry, and I am delighted to join this exciting business that has such strong core technologies, combined with many opportunities to innovate and leverage those technologies into other areas," stated Dr. Spiro. "I look forward to being able to contribute my experience and skills to delivering optimized, 'best known method' technology solutions to our customers, creating value for our shareholders, and helping to continue to attract, retain and develop top-notch R&D talent." Dr. Spiro holds a Ph.D. in Chemistry from the California Institute of Technology, where he received the Herbert Newby McCoy Prize for top thesis, and a B.S. in Chemistry, with honors, from Stanford University. Dr. Spiro holds 17 United States patents, and has published approximately 75 scientific papers. About Cabot Microelectronics Cabot Microelectronics Corp., headquartered in Aurora, Ill., is the leading supplier of CMP slurries for polishing various materials used in semiconductor manufacturing processes. These products enable manufacturers of integrated circuits to make smaller, faster and more complex devices and improve their production processes. For more information about Cabot Microelectronics, visit http://www.cabotcmp.com/ or call 630-499-2600. Safe Harbor Statement This news release may include statements that constitute "forward-looking statements" within the meaning of federal securities regulations. These forward-looking statements include statements related to future sales and operating results, company and industry growth and trends, growth of this market, international events, new product introductions and development of new products and technologies by Cabot Microelectronics. These forward-looking statements involve a number of risks, uncertainties, and other factors, including those described from time to time in Cabot Microelectronics' filings with the Securities and Exchange Commission (SEC), that could cause the actual results to differ materially from those described by these forward-looking statements. In particular, see "Risks Relating to Our Business" in Management's Discussion and Analysis in our quarterly report on Form 10-Q for the quarter ended June 30, 2003, and our Annual Report on Form 10-K for the fiscal year ended September 30, 2002, both filed with the SEC. Cabot Microelectronics Corporation assumes no obligation to update this forward-looking statement. Contact: William S. Johnson Vice President and Chief Financial Officer Cabot Microelectronics Corporation 630-375-6631 DATASOURCE: Cabot Microelectronics Corp. CONTACT: William S. Johnson, Vice President and Chief Financial Officer of Cabot Microelectronics Corporation, +1-630-375-6631 Web site: http://www.cabotcmp.com/

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