stocKHolDERs’ inFoRmAtion Officers William p. noglows Chairman, President and Chief Executive Officer H. carol Bernstein Vice President, Secretary and General Counsel yumiko Damashek Vice President, Japan and Asia Operations William s. Johnson Vice President and Chief Financial Officer David H. li Vice President, Asia Pacific Region Ananth naman Vice President, Research and Development Daniel J. pike Vice President, Corporate Development lisa A. polezoes Vice President, Human Resources thomas s. Roman Corporate Controller stephen R. smith Vice President, Marketing carmelina m. stoklosa Treasurer and Director, Finance Adam F. Weisman Vice President, Business Operations Daniel s. Wobby Vice President, Global Sales BOard Of directOrs William p. noglows Chairman, President and Chief Executive Officer, Cabot Microelectronics Corporation Robert J. Birgeneau Chancellor, University of California, Berkeley John p. Frazee, Jr. Former Chairman and Chief Executive Officer, Centel Corporation H. laurance Fuller Former Co-Chairman, BP Amoco PLC Richard s. Hill Former Chairman and Chief Executive Officer, Novellus Systems, Inc. Barbara A. Klein Former Chief Financial Officer, CDW Computer Centers, Inc. Edward J. mooney Former Chairman and Chief Executive Officer, Nalco Chemical Company steven V. Wilkinson Former Partner, Arthur Andersen LLP Bailing Xia Chairman and Chief Executive Officer, Summer Leaf, Inc. cOrpOrate infOrmatiOn Headquarters Cabot Microelectronics Corporation 870 N. Commons drive aurora, IL 60504 630.375.6631 phone 800.811.2756 toll free 630.375.5593 fax www.cabotcmp.com INvestor INforMatIoN Contact our offices by mail at the address above, by telephone at 630.499.2600 or at www.cabotcmp.com. stoCk INforMatIoN Cabot Microelectronics is traded on the Nasdaq Global select Market under the symbol CCMP. stoCk traNsfer aGeNt aNd reGIstrar Computershare trust Company, N.a. P.o. Box 43078 Providence, rI 02940-3078 781.575.3400 www.computershare.com INdePeNdeNt audItors PricewaterhouseCoopers LLP Chicago, IL stoCkHoLders’ MeetING the annual Meeting of stockholders will be held at 8 a.m. Central time on March 5, 2013, at Cabot Microelectronics Corporation 870 N. Commons drive aurora, IL forM 10-k a copy of the Cabot Microelectronics annual report on form 10-k for the fiscal year ended september 30, 2012, filed with the securities and exchange Commission, is enclosed and also available without charge at www.cabotcmp.com. Annual Report Design by Curran & Connors, Inc. / www.curran-connors.com Annual Report Cover Photo by ©iStockphoto.com / Mikkel William Nielsen