Mark Cuban (born July 31, 1958)[2] is an American businessman, investor, film producer, author, television personality and philanthropist. He is the owner of the NBA's Dallas Mavericks,[3] Landmark Theatres, and Magnolia Pictures, and is the chairman of the HDTV cable network AXS TV.[4] He is also a "shark" investor on the television series Shark Tank. In 2011, Cuban wrote an e-book, How to Win at the Sport of Business, in which he chronicles his life experiences in business and sports.[5]