L. Patrick Giroir

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.

El Paso Energy International Co. is engaged in the operation of natural gas pipelines. The company was incorporated in 1991 and is headquartered in Houston, TX.

El Paso Interim Corp. provides natural gas and related energy products in a safe, efficient and dependable manner. The company owns North America's interstate natural gas pipeline systems, which provides a stable base of earnings and cash flow and has a backlog of committed expansion projects. The company operates through three segments: Pipelines, Exploration and Production & Marketing. The Pipelines segment provides natural gas transmission, storage, and related services, primarily in the USA primarily through eight wholly or majority owned interstate pipeline systems and equity interests in two transmission systems. The Exploration and Production segment is engaged in the exploration for and the acquisition, development and production of oil, natural gas and NGL, in the US, Brazil and Egypt. The Marketing segment markets on behalf of its Exploration and Production segment and manages the price risks associated with its oil and natural gas production as well as manages remaining legacy trading portfolio. The company was founded by Paul Kayser in 1928 and is headquartered in Houston, TX.

CDM Resource Management LLC natural gas contract compression services. The company was founded by David G. Marrs in 1997 and is headquartered in Houston, TX.

Boardwalk Pipeline Partners LP provides transportation, storage, gathering and processing services for natural gas and natural gas liquids. It gathers, processes, and transports natural gas and natural gas liquids. The company was founded in November 2005 and is headquartered in Houston, TX.

Regency Energy Partners LP engages in the gathering and processing, contract compression, treating and transportation of natural gas and the transportation, fractionation and storage of natural gas liquids with assets located in Arkansas, Kansas, Louisiana, Oklahoma and Texas. The company was founded on September 2005 and is headquartered in San Antonio, TX.

Eagle Rock Energy Partners LP engages in the exploitation, development, and production of oil and natural gas properties. It provides ancillary gathering, compressing, treating, processing, and providing marketing services to its production of natural gas, natural gas liquids, condensate, and crude oil. The company was founded on May 25, 2006 and is headquartered in Houston, TX.

Part of Grizzly Energy LLC, Eagle Rock Energy G & P LLC is a private company based in Houston, TX. Scott W. Smith has been the CEO of the company since 2015.