On February 3, 2014, the Board of Directors of Merck & Co. Inc. accepted the resignation of John Canan, Senior Vice President Finance Global Controller, effective March 1, 2014. Mr. Canan will retire from the Company effective March 1, 2014.

On February 3, 2014, the Board elected Rita A. Karachun as Senior Vice President Finance Global Controller of the company, effective March 1, 2014, making her the company's principal accounting officer. Ms. Karachun, 50 years old, has served as Assistant Controller of the Company since November 2009. Prior to her appointment as Assistant Controller of the company, Ms. Karachun served as the Assistant Controller of Schering-Plough Corporation since February 2007 and was responsible for preparing financial statements and for the worldwide consolidation of international entities.