Granz Henman studied Creative Writing and English Literature at New York University (NYU) and Trinity College in Dublin. He received the Gregory Peck Scholarship from NYU and the University College of Dublin to participate in a Scriptwriting seminar in Ireland. In 1994, he completed an internship in the advertising department of Universal Pictures, followed by work as a production assistant on Christine Vachon and Gus Van Sant’s KIDS. In 1995, he began writing screenplays for such films as A DUBLIN FAIRY TALE, VENUS BOUND, and Marc Rothemund’s ANTS IN THE PANTS (1999). He had his directorial debut with the short MR. PREBLE GETS RID OF HIS WIFE in 1997, followed by THE POLAR BEAR (1998) in co-direction with Til Schweiger, MORE ANTS IN THE PANTS (2001), and HELP, I SHRUNK MY FRIENDS (2020).