Who is the current owner of McDonald's?

The original McDonald's BBQ restaurant was opened by Dick and Mac McDonald in 1940. It really became the McDonald's we know (and love?) in 1948 after closing for three months.

McDonald's operates a franchise which means individual restaurants are a joint investment between a manager (franchisee) and McDonalds. McDonald's itself is a floated public listed company which means the company is owned by whoever buys shares.