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.

Michael G. Atieh
Former Group President
Dendrite International

G. Morgan Browne
Former Chief Financial Officer and Administrative Director
Cold Spring Harbor Laboratory

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

Herbert Michael Pinedo, M.D., Ph.D.
Professor of Medical Oncology
Director of the VUMC Cancer Center – Amsterdam

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

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

Senior Executives
Colin Goddard, Ph.D.
Chief Executive Officer

Gabriel Leung
Executive Vice President and President, Oncology Business

Nicole Onetto, M.D.
Executive Vice President and Chief Medical Officer

Anker Lundemose, M.D., Ph.D.
Chief Executive Officer
Prosidion

Robert L. Van Nostrand
Vice President and
Chief Financial Officer

Barbara A. Wood, Esq.
Vice President, General Counsel and Secretary

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

Neil Gibson, Ph.D.
Vice President, Research

Corporate Headquarters
OSI Pharmaceuticals, Inc.
58 South Service Road
Suite 110
Melville, NY 11747

Other Company Locations
OSI Pharmaceuticals
2860 Wilderness Place
Boulder, CO 80301

OSI Pharmaceuticals
1 Bioscience Park Drive
Farmingdale, NY 11735

Prosidion Limited
Watlington Road
Oxford, OX4 6LT
United Kingdom

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 16, 2005 at 10:00am at OSI Pharmaceuticals, Inc.
(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 website:

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

Stock Listing
Nasdaq: OSIP

Copyright © 2005 OSI Pharmaceuticals, Inc.
All Rights Reserved.

Design: Ross Culbert & Lavery, Inc.
www.rclnyc.com

Portrait Photography: Peter Vidor, Mike Goldwater

Hand Photography: Robert Moore