to its shareholders. In June 2013, Marathon sold its Angolan oil and gas field to Sinopec for $1.52 billion. In September 2013, Marathon sold a 10% stake in an oil and gas field offshore Angola for $590 million to Sonangol Group. In October 2014, the company sold its business in Norway to Det Norske Oljeselskap ASA for $2.1 billion. In 2017, it sold its interests in the Athabasca oil sands for $2.5 billion and acquired assets in the Permian Basin for $1.2 billion. In March 2018, it sold its assets in Libya for $450 million to Total SE. In 2020, the company derived 13% of its revenues from sales to Marathon Petroleum and 12% of its revenues from sales to Koch Industries. Corporate philanthropy Since 2003, Marathon Oil and its partners Noble Energy and AMPCO, have invested in the Bioko Island Malaria Control Project (BIMCP) in Equatorial Guinea. The project includes distribution of insecticide nets, indoor residual spraying and larval source management, preventive therapy for pregnant women and malaria case management, and investment in a possible malaria vaccine. The project has resulted in a 63% reduction in malaria parasite prevalence and a 63% reduction in the mortality rate and 97% reduction in severe anemia in children under 5 years old. Criticism Environmental record According to a 2017 study, the company was responsible for 0.19% of global industrial greenhouse gas emissions from 1988 to 2015. Dealings in Equatorial Guinea The company was investigated for payments made to Teodoro Obiang Nguema Mbasogo, the president of Equatorial Guinea. The SEC completed its investigation in 2009 and did not recommend any enforcement action in the matter. See also Marathon Petroleum Standard Oil James C. Donnell List of oil exploration and production companies References External links Companies based in Houston Economy of the Western United States Automotive companies of the United States Chemical companies of the United States Natural gas companies of the United States Oil companies of the United States Companies listed on the New York Stock Exchange American companies established in 1887 1887 establishments in Texas Energy companies established in 1887 Oil and gas companies of the United States