HF Sinclair Corp. is an independent energy company. The company is headquartered in Dallas, Texas and currently employs 5,223 full-time employees. The firm's segments include Refining, Renewables, Marketing, Lubricants and Specialty Products and HEP. Refining segment is involved in the purchase and refining of crude oil and wholesale marketing of refined products, such as gasoline, diesel fuel and jet fuel. Renewables segment includes the operations of the Artesia, Cheyenne and Sinclair RDUs and the Artesia PTU. Marketing segment includes branded fuel sales. Lubricants and Specialty Products segment includes the operations of its Petro-Canada Lubricants, Red Giant Oil and Sonneborn businesses in addition to specialty lubricant products produced at its Tulsa Refinery. The HEP segment includes all of the operations of HEP, which owns and operates logistics and refinery assets. The company owns and operates about seven complex refineries.