Martinez / California / United States
Tesoro Corporation is one of the largest independent refining companies in the United States. The company produces a range of petroleum products, including gasoline, diesel and heavy fuel oils. Tesoro Corporation maintains a work force of more than 5,500 employees. It is a Fortune 150 and Global 500 business. Through its subsidiaries, the company operates over five refineries in Hawaii, California, Utah and Alaska. Tesoro Corporation operates nearly 900 retail stations under the Tesoro, Shell, Mirastar and USA Gasoline brands. The company also provides liquefied petroleum gas, asphalt, naphtha, propane and butane. Founded in 1968, it has annual revenues of approximately $25 billion.
