David Schorlemer

Tenneco, Inc. engages in the design, manufacture, market and sale of innovative clean air, powertrain and ride performance products and systems. It operates through the following segments: Motorparts, Performance Solutions, Clean Air, and Powertrain. The Motorparts segment consists of a portfolio of brand-name products in the global vehicle aftermarket within seven product categories including shocks and struts, steering and suspension, braking, sealing, engine, emissions, and maintenance. The Performance Solutions segment designs a variety of products and systems designed to optimize the ride experience of the global customer base, including noise, vibration, and harshness performance materials, advanced suspension technologies, ride control, braking, and systems protection. The Clean Air segment offers products and systems designed to reduce pollution and optimize engine performance, acoustic tuning, and weight on a vehicle for light vehicles, commercial trucks, and off-highway original equipment customers. The Powertrain segment focuses on original equipment powertrain products for automotive, heavy duty, and industrial applications. The company was founded on April 1, 1940 and is headquartered in Skokie, IL.

Petróleos Mexicanos EPE explores, refines, distributes, and markets natural gas and petrochemicals. It operates through the following business segments: Exploration and Production, Industrial Transformation, Logistics, Drilling and Services, Ethylene, Fertilizers, Cogeneration and Services, as well as Corporate and Other Subsidiaries. The company was founded in 1933 and is headquartered in Mexico.

Stallion Oilfield Holdings, Inc. provides drill site products and services for oil and gas operations. The company is headquartered in Houston, TX.

Gr Energy Services Management, LP provides business support and oil and gas field services. The private company is based in Sugar Land, TX.

Basic Energy Services, Inc. engages in the provision of well site services to oil and natural gas drilling and producing companies. It operates its business through the following segments: Completion and Remedial Services, Well Servicing and Water Logistics. The Completion and Remedial Services segment utilizes coiled tubing services, air compressor packages specially configured for underbalanced drilling operations, an array of specialized rental equipment and fishing tools, thru-tubing, and snubbing units. The Well Servicing segment encompasses a full range of services performed with a mobile well servicing rig, including the installation and removal of downhole equipment and elimination of obstructions in the well bore to facilitate the flow of oil and natural gas. The Water Logistics segment focuses on the fleet of trucks and related assets, including specialized tank trucks, storage tanks, water wells, disposal facilities water treatment, and related equipment. The company was founded in 1992 and is headquartered in Fort Worth, TX.