Thomas has a degree in marketing, and for a period he was employed as a trainee with the LEGO Group as a Member of the LEGO Group board of directors. Thomas is also, with his two sisters, a minority shareholder in LEGO Holding A/S of which he is also a Board member. He is also a member of the LEGO Group’s Brand & Innovation Board. Thomas Kirk Kristiansen with his wife owns and operates Kirk Arabians, a stud farm in Funen in central Denmark. He is also a member of the Board of the Danish Society of Purebred Arabian Horses.