
Ronald Bronstein
Biography
Ronald Bronstein is an American film director, screenwriter, editor and actor. He directed, wrote and edited the 2007 film Frownland. He is also known as a prominent collaborator of the Safdie brothers, having acted as editor on all their features and co-written all their screenplays since 2009's Daddy Longlegs. Description above from the Wikipedia article Ronald Bronstein, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Known For & Full Filmography7 Titles

Movie - 2025, 2h 15m • as Blarney Stone Phone Voice (voice)
Marty Mauser, a young man with a dream no one respects, goes to hell and back in pursuit of greatness.

Movie - 2025, 2h 15m • as Caroline's Husband (voice)
With her life crashing down around her, Linda attempts to navigate her child's mysterious illness, her absent husband, a missing person, and an increasingly hostile relationship with her therapist.

Movie - 2026, 2h 15m • as Self (Uncredited)
After attending a workshop on how to write and sell a Hallmark movie, filmmaker John Wilson tries to use the same formula to sell a documentary about concrete.

Movie - 2010, 2h 15m • as Lenny
After months of living a solitary existence, Lenny, 34, picks up his kids from school. Every year he spends a couple of weeks with his sons Sage, 9, and Frey, 7. Lenny hosts his kids within a midtown studio apartment in New York. During these two weeks, he must figure out if he wants to act as their father or be their friend. Ultimately, their trip upstate results in complete lawlessness taking over their lives.

Movie - 2017, 2h 15m • as Self
Get to know the siblings whose films have captured the skittering pulse of New York’s city streets. An original documentary featuring footage from the making of their new thriller, Good Time, along with several of the brothers’ early features and shorts. Produced by the Criterion Channel for their "Meet the Filmmakers" series.

Movie - 2004, 2h 15m • as Brother #1
A short film made by the American cinematographer Sean Price Williams.

Movie - 2011, 2h 15m • as Artiste Mafieux
Trapped in a dirty double deal, Ernst Ipsum, celebrated art authenticator, is in trouble. With nowhere to turn but inward, Ernst becomes the perfect portrait of anguish. This film traces the collapse of a man littered with the diversions of sex and sin and the lost ability to tell a true original from a fake.