About Tesoro

Once a player in the exploration and production field, Tesoro Corporation (formerly Tesoro Petroleum) has been enjoying a more refined existence in recent years as a downstream operator. The independent oil refiner and marketer operates seven US refineries -- in Alaska, California (two), Hawaii, North Dakota, Utah, and Washington -- with a combined – more... 

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Headquarters
19100 Ridgewood Pkwy.
San Antonio TX, United States 78259
Revenue
more than $10B (USD)
Employees
5,001 to 10,000
Industry
Links
Tesoro website