Variety reports that Lonergan's "Margaret" will be filmed in New York with Scott Rudin, Gary Gilbert and Sydney Pollack serving as producers. Anna Paquin has signed on to the project, and negotiations are currently underway with Matt Damon, Mark Ruffalo, J. Smith-Cameron and Jeannie Berlin. "Margaret," according to the industry paper, concerns "a Gotham teen, her actress mother and the girl who tries to make amends for her complicity in a terrible traffic accident."
Lonergan's stage plays include The Waverly Gallery, Lobby Hero and This Is Our Youth. He also wrote the screenplays for "Analyze This," "You Can Count On Me," "The Adventures of Rocky & Bullwinkle" and "Gangs of New York."