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.

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.

San Juan Basin Royalty Trust operates as an express trust in Texas. The company has a 75% net overriding royalty interest in Southland's oil and natural gas interests in properties located in the San Juan Basin in northwestern New Mexico. It also owns subject interests consist of working interests, royalty interests, overriding royalty interests, and other contractual rights in 119,000 net-producing acres in San Juan, Rio Arriba, and Sandoval Counties of northwestern New Mexico. The company was founded in 1980 and is based in Dallas, Texas.

Cross Timbers Royalty Trust operates as an express trust in the United States. It holds 90% net profits interests in certain producing and nonproducing royalty and overriding royalty interest properties in Texas, Oklahoma, and New Mexico; and 75% net profits working interest in four properties in Texas and three properties in Oklahoma. The company was founded in 1991 and is based in Dallas, 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.

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.

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.

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.