Welcome to Isa Beefmasters - raising high-performance Beefmaster cattle in West Texas, while serving customers around the globe. The company was founded in 1964, and will host their 55th bull sale this October. We have an annual bull sale the first Saturday each October, and sell females throughout the year private treaty. We also sell L Bar semen and embryos throughout the U.S. and worldwide. President Lorenzo Lasater is the 4th generation of his family in the ranching business, and the 3rd generation raising Beemasters, which were founded by his grandfather, Tom Lasater. He is a past-president of BBU, and a current director of TSCRA.