X0303 4 2009-11-03 0000310158 Merck & Co. Inc. MRK 0001217068 BRUN LESLIE A 435 DEVON PARK DRIVE 700 BUILDING WAYNE PA 19087 1 Common Stock 2009-11-03 4 A 0 100 0 A 100 D Phantom Stock 0 2009-11-03 4 A 0 4000.4554 0 A Common Stock 4000.4554 4000.4554 D Stock Option (right to buy) 24.3 2009-11-03 4 A 0 5000 0 A 2010-05-01 2019-04-30 Common Stock 5000 5000 D Received in exchange for an equivalent number of shares of Merck Sharp & Dohme Corp. (formerly Merck & Co., Inc.) ("MSD") common stock in connection with the completion of transactions contemplated by the Agreement and Plan of Merger by and among, inter alia, MSD and Merck & Co., Inc. (formerly Schering-Plough Corporation) (the "Transactions"). Each share of phantom stock is the economic equivalent of one share of Merck & Co., Inc. Common Stock, pursuant to the Plan for Deferred Payment of Directors Compensation, and was exchanged for an equal number of shares of phantom stock of MSD in connection with the Transactions. This option, which vests in three equal annual installments beginning one year from date of grant, was assumed in the Transaction and continued on the same terms and conditions for an option to purchase an equivalent number of shares of MSD common stock at the same exercise price as applied prior to the merger. Debra A. Bollwage as Attorney-in-Fact for Leslie A. Brun 2009-11-05