Timothy M. Dunn

Total E&P Joslyn Ltd. develops, operates, produces and sells recoverable bitumen found in Athabasca oil sands. Its assets include Lease 24 and Permit 70, collectively known as the Joslyn Lease. The company was founded in 1998 and is headquartered in Calgary, Canada.

US Exploration Holdings, Inc., is a Billings, Montana based company. The company produces oil and gas with operations focused on developing natural gas reserves in the Denver, Julesburg basin of Colorado

Slate River Resources LLC explores oil and natural gas with operations focused on developing unconventional natural gas resources in the rocky mountain regions. The company has operations in the Uinta and Piceance Basins in eastern Utah and western Colorado. It was formed on February 8, 2005 and is located in Denver, CO.

Vantage Energy Services, Inc. operates as a blank check company. It acquires through a merger, capital stock exchange, exchangeable share transaction, and other similar business combination in the oilfield services industry. The company is headquartered in Houston, TX.

Goldman Sachs & Co. LLC (GS&Co.) is a securities brokerage firm headquartered in New York City. Founded in 1927, the firm is a subsidiary of The Goldman Sachs Group, Inc. (NYSE: GS). GS&Co. provides services to help hedge funds manage risk, monitor portfolios, maintain liquidity and build their businesses. They offer clients access to global equity and derivatives markets, as well as foreign exchange, commodities, European Lefts, rates and credit across the Americas, Europe and Asia. The firm proactively monitors capital markets, searching for pockets of liquidity and news that may require changes to those strategies. Integration with the Goldman Sachs network gives clients access to the firm's sectored block trades and their insights into price discovery. Their electronic trading program provides clients with tools to manage their trades from pre-trade analytics to post-trade analysis.

Part of Paladin Energy Ltd., Torex Resources, Inc. explores for, produces, and develops oil and gas properties. The company is based in Calgary, Canada. Torex Resources was acquired by Summit Resources Ltd. (Canada) on August 21, 2000 for $23.14 million.

Lime Rock Management LP (Lime Rock Management) is Private Equity firm founded in 1998 by Jonathan Clark Farber and John T. Reynolds. The firm is headquartered in Westport with additional office in London.

Vantage Energy LLC operates as an independent oil and natural gas company, which engages in the acquisition, development, and exploration of oil and natural gas properties in the United States. The company was founded by Roger Biemans and Tom Tyree in December 2006 and is headquartered in Englewood, CO.

Arena Exploration LLC produces oil and gas minerals. It explores oil through geophysical, geological, and engineering evaluations. The company was founded on June 6, 2005 and is headquartered in The Woodlands, TX.

Laricina Energy Ltd. engaged in the exploration of crude oil through oil sands development. It focuses on leading edge bitumen exploration, development, production and in situ or drillable recovery rather than surface mining opportunities. The company was founded in 2005 and is headquartered in Calgary, Canada.

Lime Rock Partners LLC provides investment services in the exploration and production, energy service, and oil service technology sectors. The company was founded by Jonathan Clark Farber and John T. Reynolds in 1998 and is headquartered in Westport, CT.

Texas Oil & Gas Association engages in operation of a statewide trade association representing the Texas oil and gas industry. It provides crude oil and natural gas. The company was founded in 1919 and is headquartered in Austin, TX.

Permian Basin Petroleum Association engages in the oil and gas exploration. It provides a wide variety of membership services to producers, service companies, employees, affiliates and families. The company was founded in 1961 and is headquartered in Midland, TX.

Federation of Defense & Corporate Counsel, Inc. operates legal community. The firm composed of recognized leaders in the legal community who have achieved professional distinction, is dedicated to promoting knowledge, fellowship, and professionalism of its members as they pursue the course of a balanced justice system and represent those in need of a defense in civil lawsuits. The company was founded in 1960 and is headquartered in Elmhurst, IL.

Iracore International LLC manufactures urethane lined pipes and pipeline systems. It produces pipe system for oil sand slurry transport and tailings disposal, pipes to protect against abrasion and corrosion in the most challenging conditions. The company was founded by Daniel O. Burkes in 1957 and is headquartered in Hibbing, MN.

River Ridge Energy LLC develops natural oil and gas services. The company was founded in 2009 and is headquartered in Wexford, PA.

AccessESP LLC provides rigless electric submersible pump conveyance solutions for the global oil industry. It offers a permanent magnet motor and a side pocket mandrel wet connect system, into a patented solution consisting of a tubing-mounted permanent completion and a slickline retrievable assembly. The company was founded by Geoff Kimber-Smith and Phil Head in 2004 and is headquartered in Houston, TX.

Part of Grizzly Energy LLC, LRE GP LLC engages in exploration and development of oil and natural gas resources. The company is based in Houston, TX. Scott W. Smith has been the CEO of the company since 2015. LRE GP was acquired by Vanguard Natural Resources LLC from Lime Rock Management LP on October 05, 2015 for $0.10 million.

Vantage Energy II LLC acquires, explores and develops natural gas projects. It focuses on unconventional resources in the Appalachian Basin of the United States. The company was founded by Roger J. Biemans and Thomas B. Tyree, Jr. and is headquartered in Englewood, CO.

VES Survey International operates as an independent wellbore surveyor for the oil and gas industry. The company was founded by Gary Vaughn and Nick Wallis in 2012 and is headquartered in Robstown, TX.

Endurance Resources Holdings LLC owns and operates oil and gas properties. It offers oil and gas drilling operations. The company was founded by Don Ritter and Garrett Smith and is headquartered in Addison, TX.

Augustus Energy Partners II LLC provides oil and gas exploration services. The firm focuses on leasing and drilling as well as acquisitions of producing properties in the Rocky Mountain region. The company was founded by Steven D. Durrett in 2013 and is headquartered in Billings, MT.

San Jacinto Minerals, LLC operates as a acquisition vehicle. The company is headquartered in Denver, CO.

CrownRock Minerals LP acquires mineral and royalty interests for mineral properties in Permian Basin. The company is headquartered in Midland, TX.

Cor4 Oil Corp. provides oil and gas drilling services. The company is headquartered in Calgary, Canada.

Silvertip Completion Services Operating LLC operates as an oilfield service company. It offers cased-hole wireline solutions including perforating, pumpdown, and logging. The company is headquartered in Dallas, TX.

Primerock Resources LLC operates as oil exploration and production company. The firm acquires and develops undeveloped assets in core areas of Southeastern New Mexico and Texas. The company was founded by Manny Sirgo in April 2017 and is headquartered in Midland, TX.

Arena Gulf Holdings LP functions as an investment holding company. The company is currently headquartered in Houston, TX.

Prairie Energy distributes electricity.