William F. Leimkuhler

Mr. Leimkuhler has been a member of our board of directors since June 2007. He has been general counsel and director of business development of Paice Corporation, a privately held developer of hybrid electric powertrains, since 1999. Mr. Leimkuhler also advises a number of technology-based companies on business, financial and legal matters. From 1994 through 1999, he held various positions with Allen & Company, a New York investment banking firm, initially serving as the firm’s general counsel. Prior to that, Mr. Leimkuhler was a corporate partner with the New York law firm of Werbel & Carnelutti.

In November 2013, Mr. Leimkuhler joined the board of directors of Northern Power Systems Corp. (TSX: NPS), which designs, manufactures and services wind turbines, and was appointed chairman in December 2013. He serves on the audit and compensation committees of this board. Mr. Leimkuhler is also the lead director of U.S. Neurosurgical, Inc. (OTCBB: USNU). He served as a director of Integral Systems, Inc. (NASDAQ: ISYS) and Speedus Corp. (NASDAQ: SPDE) for over five years until 2011.