PERMIAN BASIN ROYALTY TRUST

Permian Basin Royalty Trust holds royalty interests in various oil and gas properties in the United States. The company holds a 75% net overriding royalty interest in Waddell Ranch properties, including Dune, Sand Hills (Judkins), Sand Hills (McKnight), Sand Hills (Tubb), University-Waddell (Devonian), and Waddell fields in Crane County, Texas. In addition, it holds a 95% net overriding royalty interest in Texas Royalty properties, having 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 33 counties across 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.