GT Advanced Technologies Inc. announce the appointment of Mr. Bob Krysiak to its Board of Directors, effective immediately. Mr. Krysiak has more than 30 years of experience at STMicroelectronics (“ST”), a major semiconductor company and a leading supplier of silicon carbide “SiC” devices. Most recently Mr. Krysiak served as an Executive Vice President and General Manager of ST’s Americas Region, a multi-billion-dollar business. He was also a member of the company’s strategic committee and managed the world-wide digital marketing effort.