CCMP CMC Materials Inc

Cabot Microelectronics Corporation (Nasdaq:CCMP), the world's leading supplier of chemical mechanical planarization (CMP) polishing slurries to the semiconductor industry, announced today the appointment of John McMahon to the position of Global Quality Director. Mr. McMahon joins Cabot Microelectronics after nearly twenty years in key management positions with Intel Corporation, having served as Manager of Product Development and Quality Engineering for Intel's Semiconductor Products group overseeing quality and reliability for multiple fabs and customers. Most recently, Mr. McMahon served as Intel�s Director of Customer Quality and Reliability in the Communications Products and Channel Products groups. Prior to joining Intel, he held reliability management and process engineering positions with both INMOS, Ltd., and National Semiconductor. ABOUT CABOT MICROELECTRONICS CORPORATION Cabot Microelectronics Corporation, headquartered in Aurora, Illinois, is the world's leading supplier of CMP slurries used in semiconductor and data storage manufacturing. The company's products play a critical role in the production of the most advanced semiconductor devices, enabling the manufacture of smaller, faster and more complex devices by its customers. Since becoming an independent public company in 2000, the company has grown to nearly 750 employees who work at research and development labs, sales and business offices, manufacturing facilities and customer service centers in China, France, Germany, Japan, Singapore, South Korea, Taiwan, the United Kingdom and the United States. The company's vision is to become the world leader in shaping, enabling and enhancing the performance of surfaces, and thus looks beyond its core CMP business in the semiconductor industry. For more information about Cabot Microelectronics Corporation, visit www.cabotcmp.com or contact Barbara Ven Horst, Director of Investor Relations at (630) 375-5412. Cabot Microelectronics Corporation (Nasdaq:CCMP), the world's leading supplier of chemical mechanical planarization (CMP) polishing slurries to the semiconductor industry, announced today the appointment of John McMahon to the position of Global Quality Director. Mr. McMahon joins Cabot Microelectronics after nearly twenty years in key management positions with Intel Corporation, having served as Manager of Product Development and Quality Engineering for Intel's Semiconductor Products group overseeing quality and reliability for multiple fabs and customers. Most recently, Mr. McMahon served as Intel's Director of Customer Quality and Reliability in the Communications Products and Channel Products groups. Prior to joining Intel, he held reliability management and process engineering positions with both INMOS, Ltd., and National Semiconductor. ABOUT CABOT MICROELECTRONICS CORPORATION Cabot Microelectronics Corporation, headquartered in Aurora, Illinois, is the world's leading supplier of CMP slurries used in semiconductor and data storage manufacturing. The company's products play a critical role in the production of the most advanced semiconductor devices, enabling the manufacture of smaller, faster and more complex devices by its customers. Since becoming an independent public company in 2000, the company has grown to nearly 750 employees who work at research and development labs, sales and business offices, manufacturing facilities and customer service centers in China, France, Germany, Japan, Singapore, South Korea, Taiwan, the United Kingdom and the United States. The company's vision is to become the world leader in shaping, enabling and enhancing the performance of surfaces, and thus looks beyond its core CMP business in the semiconductor industry. For more information about Cabot Microelectronics Corporation, visit www.cabotcmp.com or contact Barbara Ven Horst, Director of Investor Relations at (630) 375-5412.