Overview

• Langley Perer died on June 25 at Cedars-Sinai Medical Center in Los Angeles at age 44 after a four-year battle with cancer, Mosaic Media Group announced.
• During her six years at Mosaic, she produced Arthur (2011), I Am Number Four (2011) and Dude (2018) and supported writers and directors who later contributed to projects like Ocean’s Eight and Cobra Kai.
• She launched her career in 2003 as an assistant at Gersh, moved into literary management at Benderspink and joined Mosaic in 2011 before leaving in 2017 to focus on family and personal projects.
• After a 2021 diagnosis of leptomeningeal metastases, she and husband Scott Rosenberg donated $2 million to Dana-Farber for brain metastases trials and raised over $1 million for the Kiki Fund.
• At her death she was developing Treatable, a dark comedy series based on her experiences, and is survived by Rosenberg and their children Sawyer and Bowie.