Tesoro Corporation, headquartered in San Antonio, Texas, is a Fortune 150 and Global 500 company. As a leading independent refiner and marketer of petroleum products we, through our subsidiaries, operate seven refineries, more than 900 branded retail stations, and employ approximately 5,200 employees.Our strength lies in our investment in employees and in their future. We measure success not only by the products we bring to our customers, or the financial results we deliver to our shareholders, ...
