Anne-Marie Ainsworth

HollyFrontier Corp. is an independent petroleum refiner and marketer. It specializes in gasoline, diesel fuel, jet fuel, and modified asphalt. The firm operates through the following segments: Refining, Lubricants and Specialty Products, and Holly Energy Partners LP (HEP). The Refining segment includes the operations in its El Dorado, Tulsa, Navajo, Cheyenne, and Woods Cross Refineries. The Lubricants and Specialty Products segment offers base oil production activities, by-product sales to third parties, and intra-segment base oil sales, which includes the purchase of base oils and the blending, packaging, marketing and distribution, and sales of finished lubricants and specialty products to third parties. The HEP segment relates to all of the operations of HEP. The company was founded in 1947 and is headquartered in Dallas, TX.

Part of Enterprise Products Partners LP, OTA Holdings, Inc. operates as a holding company with interests in bulk terminals. The company is based in Houston, TX. Laurie H. Argo has been the CEO of the company since 2014.

Part of Enterprise Products Partners LP, OTLP GP LLC is a German company that engages in terminaling, storage and transportation of crude oil, refined petroleum products, and liquefied petroleum gas. The company is based in Hamburg, Germany.

Seventy Seven Energy, Inc. engages in the provision of upstream services, including drilling, pressure pumping, trucking, oilfield rental tools, rig relocation, and water transport and disposal. It operates through the following segments: Drilling, Hydraulic Fracturing, and Oilfield Rentals. The Drilling segment, through the Nomac Drilling, L.L.C., provides land drilling services for oil and natural gas exploration and production activities. The Hydraulic Fracturing segment, through the Performance Technologies, L.L.C., offers high-pressure hydraulic fracturing services and other well stimulation services. The Oilfield Rentals segment, through the Great Plains Oilfield Rental, L.L.C., supplies premium rental tools and specialized services for land-based oil and natural gas drilling, completion, and work over activities. The company was founded on September 9, 2011 and is headquartered in Oklahoma City, OK.