David C. Vorhoff was appointed as a director of Sonic in April 2007. Mr. Vorhoff is a co-founding Partner of McColl Partners, LLC, and has served as a Managing Director of the firm since its founding in 2001. Headquartered in Charlotte, North Carolina, McColl Partners provides investment banking services to middle-market companies and financial institutions, and advises clients in three primary areas: mergers and acquisitions; raising private capital; and strategic advisory and valuation assignment. Prior to 2001, Mr. Vorhoff was a Managing Director of Banc of America Securities' Health Care Group and of NationsBanc Montgomery Securities Health Care Group in New York, and of NationsBank Capital Markets' mergers and acquisitions group in Charlotte.