X0306 4 2016-11-02 0000310158 Merck & Co., Inc. MRK 0001082206 LAZARUS ROCHELLE B OGILVY & MATHER 636 11TH AVENUE NEW YORK NY 10036 1 Common Stock 2016-11-02 4 M 0 5000.0000 51.8600 A 9594.0000 D Common Stock 2016-11-02 4 M 0 5000.0000 38.0400 A 14594.0000 D Common Stock 2016-11-02 4 M 0 5000.0000 35.1900 A 19594.0000 D Common Stock 2016-11-02 4 M 0 5000.0000 24.3000 A 24594.0000 D Common Stock 2016-11-02 4 S 0 20000.0000 59.0600 D 4594.0000 D Common Stock 1757.0000 I By Spouse Stock Option (right to buy) 51.8600 2016-11-02 4 M 0 5000.0000 0.0000 D 2008-04-27 2017-04-26 Common Stock 5000.0000 0.0000 D Stock Option (right to buy) 38.0400 2016-11-02 4 M 0 5000.0000 0.0000 D 2009-04-30 2018-04-29 Common Stock 5000.0000 0.0000 D Stock Option (right to buy) 24.3000 2016-11-02 4 M 0 5000.0000 0.0000 D 2010-05-01 2019-04-30 Common Stock 5000.0000 0.0000 D Stock Option (right to buy) 35.1900 2016-11-02 4 M 0 5000.0000 0.0000 D 2011-08-04 2020-08-03 Common Stock 5000.0000 0.0000 D The option became exercisable in equal installments on 4/27/2008, 4/27/2009 and 4/27/2010. The option became exercisable in equal installments on 4/30/2009, 4/30/2010 and 4/30/2011. The option became exercisable in equal installments on 5/1/2010, 5/1/2011 and 5/1/2012. The option became exercisable in equal installments on 8/4/2011, 8/4/2012 and 8/4/2013. Katie Fedosz as Attorney-in-Fact for Rochelle B. Lazarus 2016-11-02