David W. Keck

GT Advanced Technologies, Inc. operates as a diversified technology company. It provides crystal growth equipment and services for the global, solar, LED and electronics industries. The company was founded in 1994 and is headquartered in Hudson, NH.

Part of Lockheed Martin Corp., Lockheed Martin Missiles & Space Co., Inc. is a company based in Sunnyvale, CA.

REC Advanced Silicon Materials LLC produces ultra-high purity polycrystalline silicon. The company manufactures and supplies silane gas. Both products are integrated into a core technology to create a base material for silicon wafers and devices produced in the semiconductor industry. REC Advanced Silicon Materials was established in 1990 and is headquartered in Silver Bow, MT.

GTAT Corp. provides polysilicon production technology and crystalline ingot growth systems. Its products include polysilicon technologies, silicon crystal growth, sapphire crystal growth, advanced sapphire material and silicon carbide crystal growth equipment. The company was founded by Kedar P. Guptais in 1994 headquartered in Merrimack, NH.

REC Silicon Inc. produces solar grade polysilicon and silane gas and electronic grade polysilicon. Rec Silicon Inc. operates as a subsidiary of Renewable Energy Corporation ASA. The company was founded in 2002 and is headquartered in Moses Lake, WA.