Brian Geraghty
Biography
Brian Timothy Geraghty, born on May 13, 1974, is a prominent American actor recognized for his performances in both film and television. He gained widespread acclaim for his portrayal of Ronald Pergman in the series Big Sky. Geraghty has also appeared as Dale in The Fugitive and Gene Colder in Briarpatch. Notably, he took on the role of Theodore Roosevelt in The Alienist and played Police Officer Sean Roman in Chicago P.D. His film credits include Specialist Owen Eldredge in the Oscar-winning The Hurt Locker, Tom Bogdan in We Are Marshall, Billy Hodge in The Guardian, and Fergus O'Donnell in Jarhead. Through his diverse roles, Geraghty has showcased his versatility and talent across various genres.
Filmography
View all
Avenues
2019 • Jack
Wildlike
2015 • Uncle
Ass Backwards
2013 • Brian
My Days of Mercy
2018 • Weldon
Blindfire
2020 • Will Bishop
Conversations with Other Women
2006 • Groom
Open House (2010)
2010 • David
The Identical
2014 • William Hemsley
Refuge (2012)
2012 • Sam
Seven Days in Utopia
2011 • Jake
The Luckiest Man in America
2025 • Ed
Loitering with Intent
2014 • Devon
The Hurt Locker
2008 • Specialist Owen Eldridge
Red Right Hand
2024 • Sheriff Hollister
We Are Marshall
2006
The Standoff at Sparrow Creek
2019 • Noah
The Elder Son
2006 • Greg
When a Stranger Calls (2006)
2006 • Bobby
Date and Switch
2014 • Lars
Faith (2019)
2019 • Chris
I Know Who Killed Me
2007 • Jerrod Pointer
ATM
2012 • David