Arthur Lahr heads up Crucell's Proteins Business Unit. He joined Crucell in April 2001 as Executive Director Business Development was appointed Vice President Business Development in December 2003 a member of the Management Committee in January 2004 Executive Vice President in January 2006 and assumed responsibility for European marketing & sales and company strategy in the summer of 2006 as Crucell's Chief Strategy Officer and Executive Vice President Sales & Business Development. From 1994 to 2001 he was a consultant with McKinsey & Co. in the Netherlands and New York. Prior to that he worked with Unilever. He holds a Masters in Business Administration from INSEAD and a Masters in Science Applied Physics from the University of Delft the Netherlands.