For help with your stockholder account or information about Merck stock or dividends, call us toll-free at 800 613-2104. Annual Meeting The Annual Meeting of Stockholders will be held at 2 p.m. on Tuesday, April 22, 2003, at the Edward Nash Theatre at Raritan Valley Community College, Route 28 and Lamington Road, North Branch, New Jersey. Stock trading information Merck stock is listed on the New York Stock Exchange (ticker symbol: MRK), the Philadelphia Stock Exchange and the Paris Stock Exchange. Direct purchase of Merck stock You can purchase shares directly from the Company through the Merck Stock Investment Plan. Shares also may be purchased by automatic investment each month. Call 800 613-2104 or write to: Merck Stockholder Services, WS3AB-40 Merck & Co., Inc. One Merck Drive, P.O. Box 100 Whitehouse Station, NJ 08889-0100. Dividend reinvestment plan Your dividends (all or part) can be automatically reinvested to purchase additional Merck shares. Call 800 613-2104. Stockholder Services Call Monday through Friday, 8 a.m. to 8 p.m., EST, with questions on stock- related matters, including verification of your holdings, to change your address or to report lost or missing dividends. Call 800 613-2104. Write to us at: Merck Stockholder Services, WS3AB-40 Merck & Co., Inc. One Merck Drive, P.O. Box 100 Whitehouse Station, NJ 08889-0100. For changes or lost stock certificates If you want to transfer your stock, change ownership or if you have lost your stock certificates, call: 800 522-9114. Or write to: Merck Shareowner Services Wells Fargo Bank Minnesota, N.A. 161 N. Concord Exchange South St. Paul, MN 55075-1139. Independent public accountants Independent public accountants for Merck can be reached at: PricewaterhouseCoopers LLP 400 Campus Drive Florham Park, NJ 07932 973 236-4000. News on call You can access Merck news 24 hours a day, seven days a week. Included are the latest news releases on sales and earnings, dividends, new products and other Merck-related information. Call 800 CALL-MRK. Investor Relations Securities analysts and investment professionals with business-related questions should call the Investor Relations department at 908 423-5881. Journalists Call Merck Public Affairs at 908 423-6308. Write for information If you want a copy of one of the following, write to the Public Affairs Information Center WS1A-40 Merck & Co., Inc. One Merck Drive P.O. Box 100 Whitehouse Station, NJ 08889-0100: • Merck’s 2002 Form 10-K Annual Report, as filed with the Securities and Exchange Commission, • Report on Merck Corporate Responsibility (available at www.merck.com), • Report on Diversity at Merck (available at www.merck.com) • Policies of the Board–a statement of Merck governance principles (available at www.merck.com*) • Merck Board Committee Charters–Audit, Compensation and Benefits, and Committee on Corporate Governance (available at www.merck.com*). * Available at www.merck.com/about/corporategovernance Merck on the Internet Our home page is located at: www.merck.com (this Web address is provided for convenience only and materials therein are not incorporated by reference). Trademarks All product or service marks appearing in type form different from that of the surrounding text are trademarks or service marks owned by or licensed to Merck & Co., Inc., its subsidiaries or affiliates. Cozaar and Hyzaar are registered trademarks of E.I. du Pont de Nemours and Company, Wilmington, Delaware, USA. Zetia is a trademark owned by an entity of the Merck/Schering-Plough Pharmaceuticals partnership. Claritin is a trademark of Schering-Plough Corporation. Prilosec and Nexium are trademarks of the AstraZeneca group. The U.S. trademarks for Vasotec and Vaseretic are owned by Biovail Laboratories Incorporated.