AstraZeneca is a holding company. Through its subsidiaries, Co. operates as a biopharmaceutical company engaged in discovering, developing, manufacturing and commercializing its pipeline of small molecule and biologic prescription medicines, including targeted business development through collaboration, in-licensing and acquisitions. Co. is focused on three main therapy areas: Oncology, Cardiovascular and Metabolic Diseases, and Respiratory. Co. is also selectively active in autoimmunity, infection and neuroscience. In addition, Co. works across small molecules, oligonucleotides and other drug platforms, as well as biologic medicines.

GlaxoSmithKline is a global healthcare company. Co.'s segments include: Pharmaceuticals; Vaccines; and Consumer Healthcare. The Pharmaceuticals segment is focused on developing new medicines in respiratory, HIV, oncology and immuno-inflammation, with discovery research exploring these and other areas. The Vaccines segment has a portfolio and pipeline of vaccines to help protect people throughout life. Co. delivers vaccines to people living in over 160 countries. The Consumer Healthcare segment develops and markets consumer-preferred brands in oral health, pain relief, respiratory, nutrition/gastro-intestinal and skin health.