424B3 1 file001.txt PRICING SUPPLEMENT NO. 5 Pricing Supplement No. 5 Dated June 26, 2001 (to Prospectus dated August 3, 2000 and Prospectus Supplement dated September 7, 2000) Merck & Co., Inc. Medium-Term Notes, Series D Floating Rate Notes Principal Amount: $34,670,000 Trade Date: June 26, 2001 Settlement Date (Original Issue Date): June 29, 2001 Stated Maturity: June 21, 2041 Interest Rate Basis: 1-month LIBOR Spread: Minus 45 basis points Initial Interest Rate: 1-month LIBOR, determined as if the original issue date were an interest reset date, minus the spread Interest Reset Dates: Monthly, on the 21st day of each month, based on an interest rate set two business days prior to each reset date, commencing July 21, 2001 Interest Payment Dates: March 21, June 21, September 21 and December 21 of each year, commencing September 21, 2001 Issue Price: 100.00% of the principal amount Underwriter's Discount: 1.00% of the principal amount Net Proceeds to Merck: 99.00% of the principal amount Calculation Agent: U.S. Bank Trust National Association CUSIP: 58933N AR 0 Optional Repayment Dates: The notes will be repayable at the option of the holder on at lease 30 days notice on the following optional repayment dates and at the following repayment prices: Optional Repayment Date Repayment Price ------------------------ --------------- June 21, 2011 99.00% June 21, 2014 99.25% June 21, 2017 99.50% June 21, 2020 99.75% June 21, 2023 and 100.00% June 21 of each third year thereafter until maturity Optional Redemption: The notes may be redeemed at any time, at the option of Merck, in whole or in part, in amounts of $1,000 or any multiple of $1,000, at the following redemption prices, if redeemed during the following 12-month periods: Redemption Period Redemption Price ------------------------ ---------------- June 21, 2031 through June 20, 2032 105.00% June 21, 2032 through June 20, 2033 104.50% June 21, 2033 through June 20, 2034 104.00% June 21, 2034 through June 20, 2035 103.50% June 21, 2035 through June 20, 2036 103.00% June 21, 2036 through June 20, 2037 102.50% June 21, 2037 through June 20, 2038 102.50% June 21, 2038 through June 20, 2039 101.50% June 21, 2039 through June 20, 2040 101.00% June 21, 2040 through June 20, 2041 100.50% Underwriter: UBS Warburg LLC UBS WARBURG LLC