GT Advanced Technologies Inc. Announces Resignation of John R. Granara as Vice President, Finance, Corporate Controller, Chief Accounting Officer and Principal Accounting Officer

GT Advanced Technologies Inc. is a diversified technology company. The Company is engaged in producing advanced materials and crystal growth equipment for the electronics, solar and light emitting diode (LED) industries. The Company produces sapphire material for precision optics and other specialty industries. Its products include polysilicon technologies and equipment, silicon crystal growth equipment, sapphire crystal growth equipment, advanced sapphire material, silicon carbide crystal growth equipment and Merlin. Its polysilicon production equipment and essential services are used to operate polysilicon production plants. It offers various solutions that help users optimize their polysilicon plant operations at various aspects of production, such as incoming raw material, trichlorosilane (TCS), polysilicon and environmental effluent streams. It offers TCS and silane equipment solution, and basic engineering packages for the production and purification of TCS and silane.