Mark Cuban was born on July 31 1958. He is an a American business man and an investor. He is the co-owner of the Dallas Maverickes. and he is the main sharks. he is an investor on abc shark tank . so 2011 he wrote an e-book to win an sports buisness. He was born in pennsylvnaia pittsburgh.His fathers name is Norton Cuban he was a good man. His dad also changed the family name from chabenisky to cuban.