Clay B. Siegall

CLAY B. SIEGALL is the President, Chief Executive Officer and a member
of the Board of Directors of Seattle Genetics, Inc. Prior to co-founding
Seattle Genetics, Dr. Siegall was with the Bristol-Myers Squibb
Pharmaceutical Research Institute and the National Cancer Institute,
National Institutes of Health. He received a PhD in Genetics from George
Washington University and a BS in Zoology from the University of
Maryland. Dr. Siegall has authored over 65 scientific papers and holds
nine patents. He serves on the Editorial Board of three scientific
journals and is a member of the Board of Scientific Counselors for the
Cancer Treatment Research Foundation.