X0306 4 2013-08-07 0000310158 Merck & Co. Inc. MRK 0001328766 Deese Willie A ONE MERCK DRIVE WHITEHOUSE STATION NJ 08889-0100 1 Exe V-P & Pres. MMD Common Stock 2013-08-07 4 M 0 9969.0000 33.4900 A 116008.5265 D Common Stock 2013-08-07 4 M 0 9360.0000 44.3000 A 125368.5265 D Common Stock 2013-08-07 4 M 0 7770.0000 36.5600 A 133138.5265 D Common Stock 2013-08-07 4 M 0 7580.0000 23.4500 A 140718.5265 D Common Stock 2013-08-07 4 M 0 6120.0000 44.1900 A 146838.5265 D Common Stock 2013-08-07 4 M 0 4662.0000 39.2900 A 151500.5265 D Common Stock 2013-08-07 4 M 0 3902.0000 35.0900 A 155402.5265 D Common Stock 2013-08-07 4 M 0 1275.0000 31.8400 A 156677.5265 D Common Stock 2013-08-07 4 S 0 50638.0000 48.5527 D 106039.5265 D Common Stock - 401(k) Plan 663.7643 I By 401(k) Stock Option (right to buy) 31.8400 2013-08-07 4 M 0 1275.0000 0.0000 D 2006-02-25 2015-02-24 Common Stock 1275.0000 7226.0000 D Stock Option (right to buy) 44.3000 2013-08-07 4 M 0 9360.0000 0.0000 D 2009-02-28 2018-02-28 Common Stock 9360.0000 53040.0000 D Stock Option (right to buy) 44.1900 2013-08-07 4 M 0 6120.0000 0.0000 D 2008-03-02 2017-03-01 Common Stock 6120.0000 34680.0000 D Stock Option (right to buy) 35.0900 2013-08-07 4 M 0 3902.0000 0.0000 D 2007-03-03 2016-03-02 Common Stock 3902.0000 22108.0000 D Stock Option (right to buy) 23.4500 2013-08-07 4 M 0 7580.0000 0.0000 D 2010-04-24 2019-04-23 Common Stock 7580.0000 42956.0000 D Stock Option (right to buy) 39.2900 2013-08-07 4 M 0 4662.0000 0.0000 D 2013-05-02 2022-05-01 Common Stock 4662.0000 99543.0000 D Stock Option (right to buy) 36.5600 2013-08-07 4 M 0 7770.0000 0.0000 D 2012-05-04 2021-05-03 Common Stock 7770.0000 78861.0000 D Stock Option (right to buy) 33.4900 2013-08-07 4 M 0 9969.0000 0.0000 D 2011-05-07 2020-05-06 Common Stock 9969.0000 56490.0000 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.5500 to $48.5527, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote. Holdings include shares acquired in dividend reinvestment transactions. Includes shares acquired and dividends through July 8, 2013 in the Merck U.S. Savings Plan, a 401(k) plan. Katie Fedosz as Attorney-in-Fact for Willie A. Deese 2013-08-07