The first National Treasure film grossed more than $347m (£280m) when it was released in 2004 and was a massive success for Disney, who produced the franchise.
“Hopefully they’ll both come together and we’ll bring you another National Treasure, but they’re both very active.
The 2007 follow up, National Treasure: Book of Secrets, was even bigger, grossing $460m (£371m).
A new TV series based on National Treasure is in the works at Disney+.