Black Stone Minerals, L.P., together with its subsidiaries, owns and manages oil and natural gas mineral interests. It owns mineral interests in approximately 16.8 million gross acres, nonparticipating royalty interests in 1.8 million gross acres, and overriding royalty interests in 1.6 million gross acres located in 41 states in the United States. The company was founded in 1876 and is based in Houston, Texas.

Dorchester Minerals, L.P. engages in the acquisition, ownership, and administration of royalty properties in the United States. Its royalty properties include producing and nonproducing mineral, royalty, overriding royalty, net profits, and leasehold interests in 593 counties and parishes in 28 states; and net profits interests represent net profits overriding royalty interests in various properties owned by the operating partnership. Dorchester Minerals Management LP serves as the general partner of Dorchester Minerals, L.P. The company was founded in 1982 and is based in Dallas, Texas.

Sabine Royalty Trust holds royalty and mineral interests in various producing oil and gas properties in the United States. Its royalty and mineral interests include landowner's royalties, overriding royalty interests, minerals, production payments, and other similar non-participatory interest in certain producing and proved undeveloped oil and gas properties located in Florida, Louisiana, Mississippi, New Mexico, Oklahoma, and Texas. Sabine Royalty Trust was founded in 1982 and is based in Dallas, Texas.

Vitesse Energy, Inc., together with its subsidiaries, engages in the acquisition, development, and production of non-operated oil and natural gas properties in the United States. It owns and acquires non-operated working interest and royalty interest ownership in the Williston Basin properties located in North Dakota and Montana. The company also owns non-operated interests in the Central Rockies properties located in Colorado and Wyoming. Vitesse Energy, Inc. was founded in 2014 and is based in Greenwood Village, Colorado.

Permian Basin Royalty Trust, an express trust, holds royalty interests in various oil and gas properties in the United States. The company holds a 75% net overriding royalty interest in the Waddell Ranch properties, including Dune, Sand Hills (Judkins), Sand Hills (McKnight), Sand Hills (Tubb), University-Waddell (Devonian) and Waddell fields in Crane County, Texas. It also holds a 95% net overriding royalty in the Texas Royalty properties, which consist of various producing oil fields, such as Yates, Wasson, Sand Hills, East Texas, Kelly-Snyder, Panhandle Regular, N. Cowden, Todd, Keystone, Kermit, McElroy, Howard-Glasscock, Seminole, and others located in Texas. Its Texas Royalty properties comprise approximately 125 separate royalty interests containing approximately 51,000 net producing acres. The company was founded in 1980 and is based in Dallas, 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.

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.

PEDEVCO Corp., an oil and gas company, focuses on the acquisition, development, and production of oil and natural gas assets in the United States. It holds interests in the Permian Basin asset covering an area of approximately 22,721 net acres located in New Mexico; and D-J Basin asset covering an area of approximately 19,214 net acres located in Wyoming. The company is headquartered in Houston, Texas.