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.

Layoffs are hitting the Warner Bros. Motion Picture Group, reducing its staff by 52 people, according to an internal memo to staff Wednesday and a letter sent to the state Employment Development Department.

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.