Warner Bros Discovery will lay off roughly 10% of its motion picture group employees as part of a restructuring before the company splits in two, a source with knowledge of the matter said on Wednesday.

The Warner Bros. Motion Picture Group is enacting a round of layoffs that will see jobs cut across its marketing, production strategy, operations and theatre ventures divisions. Roughly 10% of the studio’s workforce will be impacted, sources say.

Warner Bros. Discovery Inc. announced the names of the two companies resulting from a planned separation of the streaming and studios business from its cable-TV networks.