Sean P. Lance

SEAN P. LANCE was appointed President and Chief Executive Officer of
Chiron Corporation in May 1998 and assumed the position of Chairman of
the Board in May 1999. Mr. Lance joined Chiron from Glaxo Wellcome Plc,
where he spent more than 12 years in positions of national and global
management responsibility including positions as Chief Operating Officer
and Chief Executive designate of Glaxo Wellcome Plc. Mr. Lance began his
pharmaceutical industry career in the Republic of South Africa at the
Noristan Group of Companies, Ltd., in 1967. Mr. Lance has assumed
leadership roles in a variety of national and international
pharmaceutical associations, and is a past President of the
International Federation of Pharmaceutical Manufacturers Associations.
Mr. Lance currently serves on the Board of Directors for the California
Healthcare Institute, Global Alliance TB Drug Development, Bay Area
Bioscience and iKnowMed.