Cross Timbers Royalty Trust (the Trust) is an express trust. The net profits interests are the principal asset of the Trust. The Trust receives net profits income from the net profit interests generally on the last business day of each month. The net profits interest comprises approximately 90% net profits interests which are carved from producing royalty and overriding royalty interest properties in Texas, Oklahoma and New Mexico; 11.11% nonparticipating royalty interests in nonproducing properties located primarily in Texas and Oklahoma, and the 75% net profits interests which are carved from working interests in four properties in Texas and three properties in Oklahoma. Its underlying royalties, underlying nonproducing royalties, and underlying working interest properties are owned by XTO Energy. The underlying properties include over 2,900 producing properties with established production histories in Texas, Oklahoma and New Mexico and also include certain nonproducing properties.