X0202 4 2008-02-29 0 0000064978 MERCK & CO INC (MRK) 0001181175 FRAZIER KENNETH C ONE MERCK DRIVE WHITEHOUSE STATION NJ 08889-0100 0 1 0 0 Exec.V-P & Pres., Global HH Common Stock 39567.0591 D Common Stock - 401(k) Plan 1947.4931 I By 401(k) Common Stock - Dividend Reinvestment 38108 D Employee Stock Option 2008/02/29 (right to buy) 44.30 2008-02-29 4 A 0 252000 0.00 A 2009-02-28 2018-02-28 Common Stock 252000 252000 D Includes shares acquired and dividends earned through January 2, 2008 in the Merck & Co., Inc. Employee Savings and Security Plan, a 401(k) plan. Holdings include shares acquired in dividend reinvestment transactions. The option vests in three equal annual installments beginning February 28, 2009. Debra A. Bollwage as Attorney-in-Fact for Kenneth C. Frazier 2008-03-04