Diamondback Energy, Inc., an independent oil and natural gas company, acquires, develops, explores, and exploits unconventional, onshore oil and natural gas reserves in the Permian Basin in West Texas. It focuses on the development of the Spraberry and Wolfcamp formations of the Midland basin; and the Wolfcamp and Bone Spring formations of the Delaware basin, which are part of the Permian Basin in West Texas and New Mexico. The company also owns and operates midstream infrastructure assets, in the Midland and Delaware Basins of the Permian Basin. Diamondback Energy, Inc. was founded in 2007 and is headquartered in Midland, Texas.

Coterra Energy Inc., an independent oil and gas company, engages in the development, exploration, and production of oil, natural gas, and natural gas liquids in the United States. The company's properties include the Marcellus Shale with approximately 186,000 net acres in the dry gas window of the play located in Susquehanna County, Pennsylvania; Permian Basin properties with approximately 296,000 net acres located in west Texas and southeast New Mexico; and Anadarko Basin properties with approximately 182,000 net acres located in Oklahoma. It also operates natural gas and saltwater gathering and disposal systems in Texas. The company sells its natural gas to industrial customers, local distribution companies, oil and gas marketers, major energy companies, pipeline companies, and power generation facilities. Coterra Energy Inc. was incorporated in 1989 and is headquartered in Houston, Texas.

Southwestern Energy Company, an independent energy company, engages in the exploration, development, and production of natural gas, oil, and natural gas liquids (NGLs) in the United States. It operates through two segments, Exploration and Production, and Marketing. The company focuses on the development of unconventional natural gas and oil reservoirs located in Pennsylvania, West Virginia, Ohio, and Louisiana. It also engages in the marketing and transportation of natural gas, oil, and NGLs. It serves LNG exporters, energy companies, utilities, and industrial purchasers of natural gas. Southwestern Energy Company was incorporated in 1929 and is headquartered in Spring, Texas.

Comstock Resources, Inc., an independent energy company, engages in the acquisition, exploration, development, and production of natural gas and oil properties in the United States. Its assets are located in the Haynesville and Bossier shales located in North Louisiana and East Texas. The company was incorporated in 1919 and is headquartered in Frisco, Texas. Comstock Resources, Inc. is a subsidiary of Arkoma Drilling, L.P.

Pioneer Natural Resources Company operates as an independent oil and gas exploration and production company in the United States. The company explores for, develops, and produces oil, natural gas liquids (NGLs), and gas. It has operations in the Midland Basin in West Texas. The company was founded in 1997 and is headquartered in Irving, Texas.

HNR Acquisition Corp, an independent oil and natural gas company, focuses on the acquisition, development, exploration, and production of oil and natural gas properties in the Permian Basin. It holds a 100% working interest in the property that consists of 343 wells producing oil and gas, as well as 207 injection wells covering an area of approximately 13,700 contiguous acres. HNR Acquisition Corp was incorporated in 2020 and is headquartered in Houston, Texas.

Houston American Energy Corp., an independent oil and gas company, engages in the acquisition, exploration, exploitation, development, and production of natural gas, crude oil, and condensate. Its principal properties are located primarily in the Texas Permian Basin, the South American country of Colombia, and the onshore Louisiana Gulf Coast region. The company is based in Houston, Texas.

Callon Petroleum Company, an independent oil and natural gas company, focuses on the acquisition, exploration, and development of oil and natural gas properties in West Texas. Callon Petroleum Company was founded in 1950 and is headquartered in Houston, Texas.