Phillips 66 is a multinational energy company focused on refining, midstream, chemicals, and marketing. As of 2026, Phillips 66 operates ten crude oil refineries in the U.S. Its midstream business focuses on crude oil and refined products, as well as collecting and processing natural gas. The company produces chemicals for various uses in the automotive, pharmaceutical, home, and electronics industries. The marketing arm includes 7,200 fuel stations with Phillips 66, Conoco, and 76 branding.
Bing Guan—Bloomberg/Getty Images