Merck and Co. (NYSE symbol: MRK but also known as MSD in markets outside of the US and Canada) is a leading science and technology company, active in Healthcare, Life Science, and Performance Materials. For more than 130 years, this pharmaceutical giant has been developing drugs and vaccines for many of the world's most challenging diseases. Merck & Co. has branches in more than 140 countries around the world (see Figure 1), with more than 80,000 employees. The company’s annual sales are among the top in the pharmaceutical and healthcare industries. Merck also holds a dominant position in the domestic specialty health industry across the following segments: Pharmaceutical, Animal Health, Healthcare Services, and Other (see revenue mix in Figure 2) with the highest revenue coming from Pharmaceutical. With this potential, Merck sells its human health pharmaceutical products (Figure 3 gives details on Merck’s products) to wholesalers, distributors, retailers, hospitals, government agencies, and managed healthcare providers such as health maintenance organizations, and other institutions. Merck's entity structure is very diverse and has more than 450 subsidies, but there are three outstanding branches. The branches are EMD Serono in the Biopharma business, MilliporeSigma in the Life Science business, and EMD Performance Materials in the materials business.