X0306 4 2014-04-10 0000310158 Merck & Co. Inc. MRK 0001181175 FRAZIER KENNETH C ONE MERCK DRIVE WHITEHOUSE STATION NJ 08889-0100 1 1 Chairman, President & CEO Common Stock 2014-04-10 4 M 0 9334.0000 35.0900 A 316999.0630 D Common Stock 2014-04-10 4 M 0 3542.0000 31.8400 A 320541.0630 D Common Stock 2014-04-10 4 S 0 3341.0000 57.4388 D 317200.0630 D Common Stock 2014-04-10 4 S 0 6706.0000 57.1436 D 310494.0630 D Common Stock - 401(k) Plan 3470.0603 I By 401(k) Stock Option (right to buy) 31.8400 2014-04-10 4 M 0 3542.0000 0.0000 D 2006-02-25 2015-02-24 Common Stock 3542.0000 38958.0000 D Stock Option (right to buy) 35.0900 2014-04-10 4 M 0 9334.0000 0.0000 D 2007-03-03 2016-03-02 Common Stock 9334.0000 102666.0000 D The exercise and sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.2155 to $58.0200, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $56.9500 to $57.2118, 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 earned through April 7, 2014, in the Merck U.S. Savings Plan, a 401(k) plan. Katie Fedosz as Attorney-in-Fact for Kenneth C. Frazier 2014-04-11