Brian Geraghty
Biography
Brian Timothy Geraghty (born May 13, 1974) is an American film and television actor, best known for his roles as Ronald Pergman on Big Sky, Dale on the series The Fugitive, Gene Colder on Briarpatch, Theodore Roosevelt on The Alienist, Police Officer Sean Roman on Chicago P.D., Specialist Owen Eldredge in the Academy Award-winning film The Hurt Locker, Tom Bogdan in We Are Marshall, Billy Hodge in The Guardian, and Fergus O'Donnell in Jarhead.
Known For
Law & Order: Special Victims Unit
1999
Law & Order: Special Victims Unit
1999
Law & Order
1990
Chicago P.D.
2014
Chicago Fire
2012
The Sopranos
1999
Chicago Med
2015
True Blood
2008
Boardwalk Empire
2010
1923
2022
Big Sky
2020
The Alienist
2018
Filmography
Law & Order: Special Victims Unit
as Peter Butler · 1999
Law & Order: Special Victims Unit
as Sean Roman · 1999
Law & Order
as Phillip Ludwick · 1990
Chicago P.D.
as Sean Roman · 2014
Chicago Fire
as Sean Roman · 2012
The Sopranos
as Counter Boy · 1999
Chicago Med
as Sean Roman · 2015
True Blood
as Brian Eller · 2008
Boardwalk Empire
as Agent Warren Knox · 2010
1923
as Zane Davis · 2022
Big Sky
as Ronald Pergman · 2020
The Alienist
as Theodore Roosevelt · 2018
Ed
as Ari · 2000
The Hurt Locker
as Specialist Owen Eldridge · 2008
The Guardian
as Billy Hodge · 2006
Flight
as Ken Evans · 2012
Gaslit
as Peter · 2022
When a Stranger Calls
as Bobby · 2006
Extremely Wicked, Shockingly Evil and Vile
as Florida Public Defender Dan Dowd · 2019
The Fugitive
as Dale · 2020
Jarhead
as Fergus O'Donnell · 2005
Red Right Hand
as Sheriff Hollister · 2024
I Know Who Killed Me
as Jerrod Pointer · 2007
We Are Marshall
as Tom Bogdan · 2006
Briarpatch
as Gene Colder · 2020
An American Crime
as Bradley · 2007
Art School Confidential
as Stoob · 2006
My Days of Mercy
as Weldon · 2018
10 Years
as Garrity · 2012
The Luckiest Man in America
as Ed · 2025
Date and Switch
as Lars · 2014
Love Lies Bleeding
as Duke · 2008
Bobby
as Jimmy · 2006
Blindfire
as Will Bishop · 2020
ATM
as David Hargrove · 2012
The Standoff at Sparrow Creek
as Noah · 2019
Seven Days in Utopia
as Jake · 2011
"Jarhead" Diaries
as Self · 2006
Ass Backwards
as Brian · 2013
Heroes and Demons
as Dan (segment "The Second Bakery Attack") · 2012
Kockroach
Kilimanjaro
as Doug · 2013
The Chameleon
as Brian Jansen · 2010
Conversations with Other Women
as Groom · 2006
Open House
as David · 2010
Wildlike
as Uncle · 2015
Avenues
as Jack · 2019
The Identical
as William Hemsley · 2014
Loitering with Intent
as Devon · 2014
Cruel World
as Collin · 2006
The Elder Son
as Greg · 2006
Jake Gyllenhaal Challenges the Winner of the Nobel Peace Prize
as Fergus O'Donnell (archive footage) · 2010
Easier with Practice
as Davy Mitchell · 2009
Verbatim: The Ferguson Case
as Darren Wilson · 2015
Town Diary
as Young Frank Ryan · 2002
Faith
as Chris · 2019
The Second Bakery Attack
as Dan · 2010
Bastard
as Man · 2010
Krews
as Henry McFarlin · 2010
Refuge
as Sam · 2012