Kimbell Royalty Partners, LP, together with its subsidiaries, engages in acquiring and owning mineral and royalty interests in oil and natural gas properties in the United States. It serves as the general partner of the company. The company was incorporated in 2015 and is based 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.

Permianville Royalty Trust operates as a statutory trust. It is involved in the acquisition and holding of net profits interest representing the right to receive 80% of the net profits from the sale of oil and natural gas production from properties located in the states of Texas, Louisiana, and New Mexico. The company was formerly known as Enduro Royalty Trust and changed its name to Permianville Royalty Trust in September 2018. Permianville Royalty Trust was incorporated in 2011 and is based in Houston, Texas.

VOC Energy Trust acquires and holds a term net profits interest of the net proceeds from production and sale of the interests in oil and natural gas properties in the states of Kansas and Texas. The company has an 80% term net profits interest of the net proceeds on the underlying properties. As of December 31, 2021, its underlying properties had interests in 452.5 net producing wells and 51,147.2 net acres. VOC Energy Trust was incorporated in 2010 and is based in Houston, Texas.

U.S. Energy Corp., an independent energy company, focuses on the acquisition, exploration, and development of oil and natural gas properties in the United States. It holds interests in various oil and gas properties located in the Rockies region, including Montana, Wyoming, and North Dakota; the Mid-Continent region comprising Oklahoma, Kansas, and North and East Texas; West Texas; South Texas; and the Gulf Coast regions. The company was incorporated in 1966 and is headquartered in Houston, Texas.

Marine Petroleum Trust, together with its subsidiary, Marine Petroleum Corporation, operates as a royalty trust in the United States. It has overriding royalty interest in oil and natural gas leases in the Central and Western areas of the Gulf of Mexico off the coasts of Louisiana and Texas. Marine Petroleum Trust was founded in 1956 and is based in Dallas, Texas.

Mesa Royalty Trust owns overriding royalty interests in various oil and gas producing properties in the United States. It holds interests in properties located in the Hugoton field of Kansas; and the San Juan Basin field of Northwestern New Mexico and Southwestern Colorado. The company was founded in 1979 and 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.