Castle Rock Entertainment is an American film production company founded in 1987 by actor and director Rob Reiner, Martin Shafer, Andy Scheinman, Glenn Padnick, and Alan Horn, with
Columbia Pictures as their original strategic partner. Early in the studio's history,
Nelson Entertainment co-financed their films until 1991, when
New Line Cinema took over their duties (after Nelson was sold to New Line). On December 22, 1993, Castle Rock was acquired by
Turner Broadcasting System and would become a part of Time Warner when the two along with New Line Cinema merged with them on October 10, 1996. In 1999,
Warner Bros. Pictures gained distribution rights from Sony Pictures Entertainment/Columbia Pictures. Castle Rock's first release was
Winter People in 1989, but no logo was used until
When Harry Met Sally.