Upon the death of Forrest Mars Sr., he and his two sons were ranked No. 29, 30, and 31 by Forbes magazine's list of richest Americans, and they each had a worth of approximately $4 billion. As of March 2010, the three children of Forrest Mars were tied for 52nd place amongst the world's richest people according to Forbes, with a net worth of US$11 billion each.[1][2][3]