David R. Harvey

DAVID R. HARVEY is President and Chief Executive Officer of Sigma-
Aldrich Corporation. He joined the company in its European operations in
1974. He relocated to the US in 1981 and served as President of Aldrich
from 1981 to 1986. Mr. Harvey became a Vice President of Sigma-Aldrich
Corporation in 1976, Executive Vice President in 1982, Chief Operating
Officer in 1983, President in 1995, Chief Executive Officer in 1999 and
Chairman in 2000. He received his PhD in Chemistry from Oxford
University in 1963.