X0202 4 2008-05-23 0 0000064978 MERCK & CO INC (MRK) 0001408181 Kuhlik Bruce N MERCK & CO., INC. ONE MERCK DRIVE WHITEHOUSE STATION NJ 08889-0100 0 1 0 0 Exec.VP & General Counsel Common Stock - Dividend Reinvestment 2008-05-23 4 M 0 4000 0.00 A 7704.6945 D Common Stock - Dividend Reinvestment 2008-05-23 4 F 0 1454 39.03 D 6250.6945 D Restricted Stock Units 2005/05/23 2008-05-23 4 M 0 4000 39.03 D 2008-05-23 2008-05-23 Common Stock 4000 0 D Holdings include shares acquired in dividend reinvestment transactions. Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock. Debra A. Bollwage as Attorney-in-Fact for Bruce N. Kuhlik 2008-05-28