Stephen J. McDonnell

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.

Holly Corp. refines and markets petroleum products. It primarily produces light products, including gasoline, diesel fuel and jet fuel. It operates the Navajo Refinery in New Mexico and the Woods Cross Refinery in Utah. It was founded in 1947 and is headquartered in Dallas, TX.

Holly Energy Partners LP engages in the business of operating a system of petroleum product and crude pipelines, storage tanks, distribution terminals, and loading rack facilities. It operates through the Pipelines and Terminals, and Refinery Processing Unit segments. The Pipelines and Terminals segment includes petroleum products, crude pipelines and terminal, tankage, and loading rack facilities. The company was founded in 2004 and is headquartered in Dallas, TX.

HollyFrontier Navajo Refining LLC provides petroleum refining services. The firm provides crude distillation, vacuum distillation, fluid catalytic, cracking catalytic reforming, hydrodesulphurization, sulfur recovery and other units for refining the crude oil. Its products include gasoline, diesel fuel and jet fuel. The company is headquartered in Artesia, NM.