- Criminal Organization
- Big Pharma
- Rue de l'Institut 89, 1330 Rixensart, Belgium
- Phone Number
- +32 2 656 81 11
GlaxoSmithKline plc is a British multinational pharmaceutical company headquartered in London, England. Established in 2000 by a merger of Glaxo Wellcome and SmithKline Beecham, GSK was the world's sixth largest pharmaceutical company according to Forbes as of 2019, after Pfizer, Novartis, Roche, Sanofi, and Merck & Co. GSK is the tenth largest pharmaceutical company and #296 on the 2019 Fortune 500, ranked behind other pharmaceutical companies including China Resources, Johnson & Johnson, Roche, Sinopharm, Pfizer, Novartis, Bayer, Merck, and Sanofi. The company has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index. As of August 2016, it had a market capitalisation of £81 billion, the fourth largest on the London Stock Exchange. It has a secondary listing on the New York Stock Exchange. The company developed the first malaria vaccine, RTS,S, which it said in 2014 it would make available for five percent above cost.