Kathryn H. Walker

AEP Texas, Inc. engages in the transmission and distribution of electric power. It focuses on petroleum and coal products manufacturing, chemical manufacturing, oil and gas extraction, pipeline transportation, and support activities for mining. The company was founded in 1925 and is headquartered in Columbus, OH.

Part of HF Sinclair Corp, Holly Logistic Services LLC is a company that provides logistics services. The company is based in Dallas, TX. Michael C. Jennings has been the CEO of the company since 2011.

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.