Robert Johnson

DR. ROBERT JOHNSON is Senior Vice President, Medical Affairs and
Corporate Development of Kosan Biosciences Inc. Prior to joining Kosan
in September 2000, Dr. Johnson was employed by Chiron Corporation from
1998, serving as Vice President, Corporate Pharmacology and Preclinical
Affairs through 1999 and most recently as Vice President, Corporate
Development. From 1991 to 1998, Dr. Johnson was Director of Pharmacology
at Merck & Co., Inc. In addition, Dr. Johnson was a member of the
faculty at the University of Pennsylvania from 1987 to 1991 and at
Harvard Medical School from 1985 to 1987. Dr. Johnson received his BA
and PhD in Biophysics and his MD from the University of Pennsylvania.