Kimbal James Musk (born 20 September 1972) is a Canadian-American businessman and restaurateur. He owns The Kitchen Restaurant Group, a collection of restaurants in Colorado and Chicago. He is the co-founder and chairman of Big Green, a 501(c)(3) nonprofit that has built hundreds of outdoor classrooms called Learning Gardens in schoolyards across the United States. Musk is also the co-founder and chairman of Square Roots, an urban farming company growing food in hydroponic, indoor, climate controlled shipping containers. Musk currently sits on the boards of Tesla Inc. and SpaceX; his brother Elon is the current CEO of both companies. He was on the board of Chipotle Mexican Grill from 2013 to 2019. He is the brother of Elon Musk, Tosca Musk, son of Errol and Maye Musk, and a major shareholder in Tesla.