Trade name of the Anglo-Dutch oil and gas concern Royal Dutch/Shell Group, one of the largest private sector energy corporations in the world, formed in 1907. The company's corporate headquarters are in the Hague, Netherlands, and its registered office is in London, England. Operating in over 140 countries, Shell's core business is the exploration for, and the production, processing, transportation, and marketing of, oil and gas. It also has a significant petrochemicals business and a renewable energy development programme. In 2006 Shell made gross profits of $26 billion making it the second most profitable company (after ExxonMobil) in the world. In 2005 a major corporate structural reorganization saw the ending of a century of dual ownership and the unification of the British and Dutch arms of the group into a single company.