https://variety.com/2013/film/news/disney-acquires-indiana-jones-rights-from-paramount-1200927216/
Under the arrangement, Disney gains distribution and marketing rights to future films, in addition to retaining the ownership rights it secured when it acquired Lucasfilm.
Paramount will continue to be responsible for distribution of the first four films in the franchise and will receive a financial participation on any future films that are produced and released.