The siblings who run the private company are Jacqueline, Forrest E. Mars, Jr. and John Mars. Forbes estimates their worth at $60 billion.
Their grandfather Frank invented the Milky Way candy bar and started the company; their father Forrest Sr., launched M&Ms in 1941, continuing its success.
The family-owned company also includes Snickers, 3 Musketeers, Starburst and Skittles, Wrigley Gum, Altoids and Lifesavers. The company sells more than candy. It also includes rice, dog food, cat food, coffee, ice cream and more.