Don J. Sorensen

Tesoro Refining & Marketing Co. owns and operates retail and refueling gas stations. It serves marine and commercial industries. The company is headquartered in San Antonio, TX.

Tesoro Anacortes Refinery produces oil refinery products. It supplies liquefied petroleum gas, gasoline, jet fuel, and diesel to markets in Washington and Oregon. The company is headquartered in Anacortes, WA.

Part of Marathon Petroleum Corp., Tesoro Logistics GP LLC is a company that owns, operates, develops, and acquires crude oil and refined products logistics assets. The company is based in Wilmington, DE.

Part of Marathon Petroleum Corp., QEP Midstream Partners GP LLC is a company that provides natural gas transmission services. The company is based in Denver, CO.

QEP Midstream Partners LP is a limited partnership company formed to own, operate, acquire and develop midstream energy assets. The company's primary assets consist of ownership interests in four gathering systems and two FERC-regulated pipelines through which it provides natural gas and crude oil gathering and transportation services. It provides gathering, compression and transportation services to producers and users of natural gas and crude oil. The company was founded on April 19, 2013 and is headquartered in San Antonio, TX.

Part of Marathon Petroleum Corp., Tesoro Cos., Inc. operates petroleum refineries and retail stations. The company is based in San Antonio, TX.

Andeavor Logistics LP engages in the ownership, operation, development and acquisition of crude oil and refined products logistics assets. It operates through the following segments: Terminalling & Transportation, Gathering & Processing and Wholesale. The Terminalling & Transportation segment consists of regulated common carrier products pipeline running from Salt Lake City, Utah to Spokane, Washington and a jet fuel pipeline to the Salt Lake City International Airport. The Gathering & Processing segment includes crude oil and natural gas pipeline gathering systems in the Bakken Shale/Williston Basin area of North Dakota and Montana and the Green River Basin, Uinta Basin and Vermillion Basin in the states of Utah, Colorado and Wyoming, the Delaware Basin in the Permian Basin area of West Texas and Southern New Mexico, the four corners area of Northwestern New Mexico, and consists of crude trucking operations and gas processing and fractionation complexes. The Wholesale segment consists of bulk petroleum distribution facilities and a fleet of refined product delivery trucks. The company was founded on December 3, 2010 and is headquartered in San Antonio, TX.

Andeavor engages in the refining and marketing of petroleum products. It operates through the following segments: Refining, Logistics, and Marketing. The Refining segment buys and refines crude oil and other feed stocks into transportation fuels, such as gasoline and gasoline blend stocks, jet fuel and diesel fuel, as well as other products, including heavy fuel oils, liquefied petroleum gas and petroleum coke for sale in bulk markets to a wide variety of customers within Andeavor's markets. The logistics segment includes crude oil and natural gas gathering assets, natural gas and natural gas liquid processing assets, and crude oil and refined products terminalling, transportation and storage assets acquired from Andeavor and third parties. The Marketing segment sells transportation fuels through branded and unbranded channels. Its brand portfolio includes ARCO, Shell, Exxon, Mobil, USA Gasoline, Rebel, and Tesoro. The company was founded by West V. Robert, Jr. in 1964 and is headquartered in San Antonio, TX.