• Laredo Petroleum, Inc.
• LRR Energy, L.P.
• Matador Resources Company
• Enduro Resource Partners LLC
• Permianville Royalty Trust
• SandRidge Permian Trust
• Iron Creek Energy Group, LLC
• Rex Energy Rockies, LLC
• Rex Energy I, LLC
• RE Gas Development LLC
• PennTex Resources Illinois, Inc.
• Rex Energy Operating Corp.
• Amplify Energy Holdings LLC
• Rex Energy IV, LLC
• FracHawk Services, LLC
• NGAS Production Co.
• Williston Hunter, Inc.
• Chesapeake Granite Wash Trust
• Alta Mesa Eagle, LLC
• Terrace Energy Corp
• Oasis Petroleum North America LLC
• EP Energy Corp
• Standard Production Wells Corp
• New Source Energy Corp
• Mid-Con Energy Partners, LP
• Vital Energy Inc. par value $0.01 per share
• ZaZa Energy Corp
• Dynamic Offshore Resources, Inc.
• Sanchez Energy Corp
• ICON Oil & Gas Fund-B L.P.
• ICON Oil & Gas Fund-C L.P.
• ICON Oil & Gas Fund-A L.P.
• ICON Oil & Gas Fund
• Oasis Well Services LLC
• Oasis Petroleum Marketing LLC
• Milagro Oil & Gas, Inc.
• TotalEnergies Capital International
• Amplify Energy Corp.
• Carrizo (Eagle Ford) LLC
• Carrizo (Niobrara) LLC
• Eagle Rock Gas Services, LLC
• Eagle Rock Energy G&P Holding, Inc.
• Eagle Rock Marketing, LLC
• Eagle Rock Mid-Continent Asset, LLC
• Eagle Rock Mid-Continent Operating, LLC
• Eagle Rock Mid-Continent Holding, LLC
• XR Energy Inc.
• Riley Exploration Group, LLC
• Laredo Petroleum - Dallas, Inc.
• Quicksilver Production Partners LP

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