BOARD OF DIRECTORS
Robert A. Ingram
Chairman of the Board
Vice Chairman Pharmaceuticals
GlaxoSmithKline

Colin Goddard, Ph.D.
Chief Executive Officer

Edwin A. Gee, Ph.D.
Chairman Emeritus
Former Chairman & CEO
International Paper, Inc.

G. Morgan Browne
Chief Financial Officer
Cold Spring Harbor Laboratory

John H. French II
Vice Chairman,
Southern Pacific Petroleum (US)
and Vice Chairman,
Company of the Far Countries

Daryl K. Granner, M.D.
Director, Vanderbilt Diabetes Center; Professor, Molecular Physiology and Biophysics, Vanderbilt University

Walter M. Lovenberg, Ph.D.
Former Executive Vice President, Marion Merrell Dow Inc.

Viren Mehta
Mehta Partners LLC

Sir Mark Richmond
Formerly Head of Research and Special Assignments, Glaxo Research & Development

John P. White, Esq.
Partner
Cooper & Dunham LLP


SENIOR MANAGEMENT
Colin Goddard, Ph.D.
Chief Executive Officer

Nicole Onetto, M.D.
Executive Vice President,
Oncology

Robert L. Van Nostrand
Vice President and
Chief Financial Officer

Barbara A. Wood, Esq.
General Counsel

Robert L. Simon
Vice President, Global Regulatory Affairs and CMC

Neil Gibson, Ph.D.
Vice President, Research

Arthur M. Bruskin, Ph.D.
Vice President, Strategic Planning

Linda E. Amper, Ph.D.
Vice President, Human Resources and Administration

Geoffrey Cooper, Ph.D.
Vice President, Business
Development

David Laskow-Pooley
General Manager, U.K.

Jim McCormack, Ph.D., D.Sc.
Vice President, U.K. Research

Pedro Santabárbara, M.D., Ph.D.
Vice President, Clinical Research

John A. Slack, Ph.D.
Vice President, Development

Raymond Bendele, D.V.M., Ph.D.
Vice President, Pharmaceutical Development


CORPORATE HEADQUARTERS
OSI Pharmaceuticals, Inc.
58 South Service Road
Suite 110
Melville, NY 11747

OTHER COMPANY
LOCATIONS

OSI Pharmaceuticals Ltd.
Watlington Road
Oxford, OX4 6LT
United Kingdom

OSI Pharmaceuticals (Boulder)
2860 Wilderness Place
Boulder, CO 80301

OSI Pharmaceuticals (US Research)
1 Bioscience Park Drive
Farmingdale, NY 11735


TRANSFER AGENT
& REGISTRAR
Bank of New York
101 Barclay Street
New York, NY 10286
(800) 524-4458
http://stock.bankofny.com

CORPORATE COUNSEL
Saul Ewing LLP
Centre Square West
1500 Market Street
Philadelphia, PA 19102

GENERAL COUNSEL
Mintz, Levin
666 Third Avenue
New York, NY 10017

PATENT COUNSEL
Cooper & Dunham LLP
1185 Avenue of The Americas
New York, NY 10036

AUDITORS
KPMG LLP
1305 Walt Whitman Road
Melville, NY 11747

ANNUAL MEETING
The annual meeting
of shareholders will be
held on March 19, 2003
at 10:00AM at
OSI Pharmaceuticals
(U.S. Research Facility)
1 Bioscience Park Drive
Farmingdale, NY 11735

ANNUAL REPORT
ON FORM 10-K
The Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission and other information may be obtained without charge by writing, phoning or visiting our Web site:

OSI Pharmaceuticals, Inc.
58 South Service Road
Suite 110
Melville, NY 11747
(631) 962-2000
www.osip.com

STOCK LISTING
Nasdaq: OSIP