hmmm ... Must be some kind of CONTRACTS in place ... in order for 4K Studios to be working on FILMS from the MAJOR STUDIOS ...

Just from a quick check ... here are some from 5 of the 6 MAJORS ... right here ...

20th Century Fox ...
*** Fantastic Four
*** The Martian
*** Life of Pi
*** The Peanuts Movie
*** Ice Age: Collision Course

Columbia Pictures
*** Passengers

Walt Disney Studios Motion Pictures
*** Rogue One

Universal Pictures
*** Charade

Paramount Pictures ...
*** Indiana Jones and the Last Crusade ...
*** The Big Short ...
*** 13 Hours: The Secret Soldiers of Benghazi ...
*** Zoolander 2 ...
*** Whiskey Tango Foxtrot ...
*** 10 Cloverfield Lane ...
*** Everybody Wants Some !! ...
*** Florence Foster Jenkins ...
*** Ben-Hur ...
*** Jack Reacher: Never Go Back ...
*** Arrival ...
*** Allied ...
*** Fences ...
*** Silence ...

PLUS ... Even from United Artists (Division of MGM) ... which is NOW considered to be
a Mini-MAJOR Studio ...

United Artists (Division of MGM) ... ...
*** Octopussy