Christopher A Kuebler

Christopher A. Kuebler has served as a Director of the Company since May 2006. Mr. Kuebler served as Chairman and CEO of Covance Inc., and its precursor companies from November 1994 to December 2004. He served as Chairman during 2005. Prior to joining Covance, Mr. Kuebler spent nearly 20 years in the pharmaceutical industry, at Abbott Laboratories, Squibb Inc. and Monsanto Health Care. Mr. Kuebler is currently a Director of Nektar Therapeutics.