CCMP CMC Materials Inc

Cabot Microelectronics Corporation (Nasdaq:CCMP), the leading supplier of chemical mechanical planarization (CMP) slurries to the semiconductor industry, announced today that it will participate at the AeA Classic Financial Conference in San Diego, California, on Monday, November 7, and Tuesday, November 8, 2005. About Cabot Microelectronics Cabot Microelectronics Corporation, headquartered in Aurora, Illinois, is the leading supplier of CMP slurries for polishing various materials used in semiconductor manufacturing processes. 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. For more information about Cabot Microelectronics Corporation visit www.cabotcmp.com or contact the company at (630) 499-2600.