EQT Corporation operates as a natural gas production company in the United States. The company sells natural gas and natural gas liquids to marketers, utilities, and industrial customers through pipelines located in the Appalachian Basin. It also offers marketing services and contractual pipeline capacity management services. The company was formerly known as Equitable Resources Inc. and changed its name to EQT Corporation in February 2009. EQT Corporation was founded in 1878 and is headquartered in Pittsburgh, Pennsylvania.

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.

Devon Energy Corporation, an independent energy company, engages in the exploration, development, and production of oil, natural gas, and natural gas liquids in the United States. It operates in Delaware, Eagle Ford, Anadarko, Williston, and Powder River Basins. The company was founded in 1971 and is headquartered in Oklahoma City, Oklahoma.

Antero Resources Corporation, an independent oil and natural gas company, engages in the development, production, exploration, and acquisition of natural gas, natural gas liquids (NGLs), and oil properties in the United States. It operates in three segments: Exploration and Development; Marketing; and Equity Method Investment in Antero Midstream. As of December 31, 2023, the company had approximately 515,000 net acres in the Appalachian Basin; and approximately 172,000 net acres in the Upper Devonian Shale. Its gathering and compression systems also comprise 631 miles of gas gathering pipelines in the Appalachian Basin. The company was formerly known as Antero Resources Appalachian Corporation and changed its name to Antero Resources Corporation in June 2013. Antero Resources Corporation was incorporated in 2002 and is headquartered in Denver, Colorado.

Range Resources Corporation operates as an independent natural gas, natural gas liquids (NGLs), crude oil, and condensate company in the United States. The company engages in the exploration, development, and acquisition of natural gas and crude oil properties located in the Appalachian region. It sells natural gas to utilities, marketing and midstream companies, and industrial users; NGLs to petrochemical end users, marketers/traders, and natural gas processors; and oil and condensate to crude oil processors, transporters, and refining and marketing companies. The company was formerly known as Lomak Petroleum Inc. and changed its name to Range Resources Corporation in August 1998. Range Resources Corporation was founded in 1976 and is headquartered in Fort Worth, Texas.

CNX Resources Corporation, an independent natural gas and midstream company, engages in the acquisition, exploration, development, and production of natural gas properties in the Appalachian Basin. The company operates in two segments, Shale and Coalbed Methane (CBM). It produces and sells pipeline quality natural gas primarily for gas wholesalers. The company owns rights to extract natural gas from shale properties in Pennsylvania, West Virginia, and Ohio, as well as rights to extract natural gas from other shale and shallow oil and gas formations in Illinois, Indiana, New York, and Virginia. It also owns rights to extract CBM in Virginia, West Virginia, Pennsylvania, Ohio, Illinois, Indiana, and New Mexico. In addition, the company designs, builds, and operates natural gas gathering systems to move gas from the wellhead to interstate pipelines or other local sales points; owns and operates approximately 2,600 miles of natural gas gathering pipelines, as well as various natural gas processing facilities. It also offers turn-key solutions for water sourcing, delivery, and disposal for its natural gas operations and for third parties. The company was formerly known as CONSOL Energy Inc. and changed its name to CNX Resources Corporation in November 2017. CNX Resources Corporation was founded in 1860 and is headquartered in Canonsburg, Pennsylvania.

Chesapeake 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. Chesapeake Energy Corporation was founded in 1989 and is based in Oklahoma City, Oklahoma.

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.