Robert J. Perez has been a director since January 2009.

He is currently Executive Vice President and Chief Operating Officer at Cubist Pharmaceuticals, Inc. Mr. Perez joined Cubist in 2003, as Senior Vice President, Sales and Marketing and led the launch of Cubicin® (daptomycin for injection). Prior to joining Cubist, he served as Vice President of Biogen, Inc.'s CNS Business Unit from 2001-2003, where he was responsible for commercial leadership of an $800 million neurology business unit and from 1995 to 2001, held positions of increasing responsibility within the commercial organization. From 1987 to 1995, Mr. Perez held various sales and marketing positions at Zeneca Pharmaceuticals. Mr. Perez received a B.S. from California State University, Los Angeles and an MBA from The Anderson School at UCLA.