Expand Energy Corporation operates as an independent exploration and production company in the United States. It engages in acquisition, exploration, and development of properties to produce oil, natural gas, and natural gas liquids from underground reservoirs. The company holds interests in natural gas resource plays in the Marcellus Shale in the northern Appalachian Basin in Pennsylvania and the Haynesville/Bossier Shales in northwestern Louisiana. As of December 31, 2023, the company owns a portfolio of onshore U.S. unconventional natural gas assets, including interests in approximately 5,000 natural gas wells. The company was formerly known as Chesapeake Energy Corporation and changed its name to Expand Energy Corporation in October 2024. Expand Energy Corporation was founded in 1989 and is based in Oklahoma City, Oklahoma.

Sable Offshore Corp. engages in the oil and gas exploration and development activities in the United States. The company operates through three platforms located in federal waters offshore California. It owns and operates 16 federal leases across approximately 76,000 acres and subsea pipelines, which transport crude oil, natural gas, and produced water from the platforms to the onshore processing facilities. The company was formerly known as Flame Acquisition Corp. and changed its name to Sable Offshore Corp. in February 2024. Sable Offshore Corp. was incorporated in 2020 and is based in Houston, Texas.

PrimeEnergy Resources Corporation, through its subsidiaries, engages in acquisition, development, and production of oil and natural gas properties in the United States. The company owns leasehold, mineral, and royalty interests in producing and non-producing oil and gas properties; and operates approximately 534 active wells and owns non-operating interests and royalties in 952 additional wells. It also acquires producing oil and gas properties through joint ventures with industry partners; and provides contract services to third parties, including well-servicing support, site-preparation, and construction services for oil and gas drilling and reworking operations. The company was formerly known as PrimeEnergy Corporation and changed its name to PrimeEnergy Resources Corporation in December 2018. PrimeEnergy Resources Corporation was incorporated in 1973 and is headquartered in Houston, Texas.

PHX Minerals Inc. operates as a natural gas and oil mineral company in the United States. The company produces and sells natural gas, crude oil, and natural gas liquids. Its principal properties are located in Oklahoma, Texas, Louisiana, North Dakota, and Arkansas. The company sells its products to various purchasers, including pipeline and marketing companies. The company was formerly known as Panhandle Oil and Gas Inc. and changed its name to PHX Minerals Inc. in October 2020. PHX Minerals Inc. was founded in 1926 and is headquartered in Fort Worth, Texas.

Amplify Energy Corp., together with its subsidiaries, engages in the acquisition, development, exploitation, and production of oil and natural gas properties in the United States. The company's properties consist of operated and non-operated working interests in producing and undeveloped leasehold acreage, as well as working interests in identified producing wells located in Oklahoma, the Rockies, federal waters offshore Southern California, East Texas/North Louisiana, and Eagle Ford. The company is based in Houston, Texas.

Mexco Energy Corporation, an independent oil and gas company, engages in the acquisition, exploration, development, and production of natural gas, crude oil, condensate, and natural gas liquids in the United States. It owns partial interests in wells located in the states of Texas, New Mexico, Oklahoma, Louisiana, Alabama, Mississippi, Arkansas, Wyoming, Kansas, Colorado, Montana, Virginia, North Dakota, and Ohio. It also owns leasehold mineral, royalty, and other interests. The company was formerly known as Miller Oil Company and changed its name to Mexco Energy Corporation in April 1980. Mexco Energy Corporation was incorporated in 1972 and is based in Midland, Texas.

New Concept Energy, Inc. engages in real estate rental business. The company owns land located in Parkersburg West Virginia. It provides advisory and management services for an independent oil and gas company. The company was formerly known as CabelTel International Corporation and changed its name to New Concept Energy, Inc. in May 2008. New Concept Energy, Inc. is based in Dallas, Texas.

Empire Petroleum Corporation engages in the acquisition, exploration, and development of oil and gas interests in Louisiana, New Mexico, Montana, North Dakota, and Texas. The company was formerly known as Americomm Resources Corporation and changed its name to Empire Petroleum Corporation in August 2001. Empire Petroleum Corporation was incorporated in 1983 and is headquartered in Tulsa, Oklahoma.