Marathon Petroleum Corporation, together with its subsidiaries, operates as an integrated downstream energy company primarily in the United States. The company operates through Refining & Marketing, and Midstream segments. The Refining & Marketing segment refines crude oil and other feedstocks at its refineries in the Gulf Coast, Mid-Continent, and West Coast regions of the United States; and purchases refined products and ethanol for resale and distributes refined products, including renewable diesel, through transportation, storage, distribution, and marketing services. Its refined products include transportation fuels, such as reformulated gasolines and blend-grade gasolines; heavy fuel oil; and asphalt. This segment also manufactures propane and petrochemicals. It sells refined products to wholesale marketing customers in the United States and internationally, buyers on the spot market, and independent entrepreneurs who operate primarily Marathon branded outlets, as well as through long-term fuel supply contracts to direct dealer locations primarily under the ARCO brand. The Midstream segment transports, stores, distributes, and markets crude oil and refined products through refining logistics assets, pipelines, terminals, towboats, and barges; gathers, processes, and transports natural gas; and gathers, transports, fractionates, stores, and markets natural gas liquids. Marathon Petroleum Corporation was founded in 1887 and is headquartered in Findlay, Ohio.

Valero Energy Corporation manufactures, markets, and sells petroleum-based and low-carbon liquid transportation fuels and petrochemical products in the United States, Canada, the United Kingdom, Ireland, Latin America, Mexico, Peru, and internationally. It operates through three segments: Refining, Renewable Diesel, and Ethanol. The company produces California Reformulated Gasoline Blendstock for Oxygenate Blending and Conventional Blendstock for Oxygenate Blending gasolines, CARB diesel, diesel, jet fuel, heating oil, and asphalt; feedstocks; aromatics; sulfur and residual fuel oil; intermediate oils; and sulfur, sweet, and sour crude oils. It sells its refined products through wholesale rack and bulk markets; and through outlets under the Valero, Beacon, Diamond Shamrock, Shamrock, Ultramar, and Texaco brands. The company owns and operates renewable diesel and ethanol plants, as well as produces renewable diesel and naphtha under the Diamond Green Diesel brand name. In addition, it offers ethanol and various co-products, including dry distiller grains, syrup, and inedible distillers corn oil to animal feed customers. The company was formerly known as Valero Refining and Marketing Company and changed its name to Valero Energy Corporation in August 1997. Valero Energy Corporation was founded in 1980 and is headquartered in San Antonio, Texas.

Murphy USA Inc. engages in marketing of retail motor fuel products and convenience merchandise. The company operates retail stores under the Murphy USA, Murphy Express, and QuickChek brands, as well as operates non-fuel convenience stores. It operates retail gasoline stores principally in the Southeast, Southwest, and Midwest United States. Murphy USA Inc. was founded in 1996 and is headquartered in El Dorado, Arkansas.

Sunoco LP, together with its subsidiaries, distributes and retails motor fuels in the United States. It operates through two segments: Fuel Distribution and Marketing, and All Other. The Fuel Distribution and Marketing segment purchases motor fuel, as well as other petroleum products, such as propane and lubricating oil from independent refiners and oil companies and supplies it to company-operated retail stores, independently operated commission agents, and retail stores, as well as other commercial customers, including unbranded retail stores, other fuel distributors, school districts, municipalities, and other industrial customers. It owns and operates retail stores under the APlus and Aloha Island Mart brand names; and offers food, beverages, snacks, grocery and non-food merchandise, motor fuels, and other services. The All Other segment includes partnership credit card services, franchise royalties, and retail operations; and offers credit card processing, car washes, lottery, automated teller machines, money order, prepaid phone cards, and wireless services. The company was formerly known as Susser Petroleum Partners LP and changed its name to Sunoco LP in 2014. Sunoco LP was founded in 1886 and is headquartered in Dallas, Texas.

UGI Corporation, together with its subsidiaries, distributes, stores, transports, and markets energy products and related services in the United States and internationally. The company operates through four segments: AmeriGas Propane, UGI International, Midstream & Marketing, and UGI Utilities. It distributes propane to approximately 1.3 million residential, commercial/industrial, motor fuel, agricultural, and wholesale customers through 1,400 propane distribution locations. The company distributes liquefied petroleum gases (LPG) to residential, commercial, industrial, agricultural, wholesale and automobile fuel customers; and provides logistics, storage, and other services to third-party LPG distributors. In addition, it engages in the retail sale of natural gas, liquid fuels, and electricity to approximately 12,400 residential, commercial, and industrial customers at 42,000 locations. Further, the company distributes natural gas to approximately 677,000 customers in eastern and central Pennsylvania counties through its distribution system of approximately 12,500 miles of gas mains; and supplies electricity to approximately 62,600 customers in northeastern Pennsylvania through 2,560 miles of lines and 14 substations. Additionally, it operates electric generation facilities, which include coal-fired, landfill gas-fueled, solar-powered, and natural gas-fueled facilities; a natural gas liquefaction, storage, and vaporization facility; propane storage and propane-air mixing stations; and rail transshipment terminals. It manages natural gas pipeline and storage contracts; develops, owns, and operates pipelines, gathering infrastructure, and gas storage facilities. UGI Corporation was incorporated in 1882 and is headquartered in King of Prussia, Pennsylvania.

Global Partners LP engages in the purchasing, selling, gathering, blending, storing, and logistics of transporting gasoline and gasoline blendstocks, distillates, residual oil, renewable fuels, crude oil, and propane to wholesalers, retailers, and commercial customers. The company operates through three segments: Wholesale, Gasoline Distribution and Station Operations, and Commercial. The Wholesale segment sells home heating oil, branded and unbranded gasoline and gasoline blendstocks, diesel, kerosene, and residual oil to home heating oil and propane retailers and wholesale distributors. This segment also transports the products by railcars, barges, trucks and/or pipelines. Its Gasoline Distribution and Station Operations segment sells branded and unbranded gasoline to gasoline station operators and sub-jobbers; operates gasoline stations and convenience stores; and provides car wash, lottery, and ATM services, as well as leases gasoline stations. The Commercial segment sells and delivers unbranded gasoline, home heating oil, diesel, kerosene, residual oil, and bunker fuel to customers in the public sector, as well as to commercial and industrial end-users; and sells custom blended fuels. The company is also involved in the transportation of petroleum products and renewable fuels through rail from the mid-continent region of the United States and Canada. Global Partners LP was founded in 2005 and is based in Waltham, Massachusetts.

CrossAmerica Partners LP engages in the wholesale distribution of motor fuels, operation of convenience stores, and ownership and leasing of real estate used in the retail distribution of motor fuels in the United States. It operates in two segments, Wholesale and Retail. The Wholesale segment engages in the wholesale distribution of motor fuels to lessee dealers, independent dealers, commission agents, and company operated retail sites. The Retail segment is involved in the sale of convenience merchandise items; and retail sale of motor fuels at company operated retail sites and retail sites operated by commission agents. CrossAmerica GP LLC operates as the general partner of the company. The company was formerly known as Lehigh Gas Partners LP and changed its name to CrossAmerica Partners LP in October 2014. The company was founded in 1992 and is based in Allentown, Pennsylvania.

Delek US Holdings, Inc. engages in the integrated downstream energy business in the United States. The company operates through Refining, Logistics, and Retail segments. The Refining segment processes crude oil and other feedstock for the manufacture of various grades of gasoline, diesel fuel, aviation fuel, asphalt, and other petroleum-based products that are distributed through owned and third-party product terminal. It owns and operates refineries located in Tyler, Texas; El Dorado, Arkansas; Big Spring, Texas; and Krotz Springs, Louisiana, as well as biodiesel facilities in Crossett, Arkansas, Cleburne, Texas, and New Albany, Mississippi. The Logistics segment gathers, transports, and stores crude oil, intermediate, and refined products; and markets, distributes, transports, and stores refined products, as well as disposes and recycles water for third parties. It owns or leases crude oil transportation pipelines, refined product pipelines, crude oil gathering systems, and associated crude oil storage tanks; and owns and operates light product distribution terminals, as well as markets light products using third-party terminals. The Retail segment owns and leases convenience store sites located primarily in West Texas and New Mexico. Its convenience stores offer various grades of gasoline and diesel under the DK or Alon brand; and food products and service, tobacco products, non-alcoholic and alcoholic beverages, and general merchandise, as well as money orders to the public primarily under the 7-Eleven and DK or Alon brand names. It serves oil companies, independent refiners and marketers, jobbers, distributors, utility and transportation companies, government, and independent retail fuel operators. Delek US Holdings, Inc. was founded in 2001 and is headquartered in Brentwood, Tennessee.