Jessica Barden and Daniel Sunjata will also join previously announced Garrett Hedlund, Richard Jenkins Jessica Brown Findlay, Jennifer Hudson, Terrence Howard and Amy Adams.
Mimi Steinbauer’s Radiant Films is handling international sales and Media House Capital and Three Point Capital are among the financiers.
Lullaby is currently shooting in New York and follows a young man’s race to be by his estranged father’s bedside after he hears the ailing parent plans to take himself off life support.
Andrea Stone-Brokaw of Ananta Productions is producing with Cary Brokaw of Avenue Pictures.
David Ostrander, Chloe Green, Aaron L Gilbert and Michael Bederman serve as executive producers.