Acting
Brian Geraghty
May 13, 1974 (52 years) Toms River, New Jersey, USA
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
8.0
Law & Order: Special Victims Unit
Peter Butler
8.4
Chicago P.D.
Sean Roman
8.7
The Sopranos
Counter Boy
8.4
Chicago Fire
Sean Roman
7.3
Law & Order
Phillip Ludwick
8.3
Chicago Med
Sean Roman
7.6
True Blood
Brian Eller
6.9
Flight
Ken Evans
7.2
The Hurt Locker
Specialist Owen Eldridge
8.0
Boardwalk Empire
Agent Warren Knox
8.3
1923
Zane Davis
7.0
Extremely Wicked, Shockingly Evil and Vile
Florida Public Defender Dan Dowd
6.7
Jarhead
Fergus O'Donnell
7.1
The Guardian
Billy Hodge
7.5
The Alienist
Theodore Roosevelt
Filmography
6.3
The Luckiest Man in America
2025 · Ed
6.6
Red Right Hand
2024 · Sheriff Hollister
8.3
1923
2022 · Zane Davis
6.8
Gaslit
2022 · Peter
7.2
Big Sky
2020 · Ronald Pergman
6.7
Briarpatch
2020 · Gene Colder
6.2
The Fugitive
2020 · Dale
6.8
Blindfire
2020 · Will Bishop
7.0
Extremely Wicked, Shockingly Evil and Vile
2019 · Florida Public Defender Dan Dowd
6.0
The Standoff at Sparrow Creek
2019 · Noah
6.1
Avenues
2019 · Jack
1.7
Faith
2019 · Chris
7.5
The Alienist
2018 · Theodore Roosevelt
7.3
My Days of Mercy
2018 · Weldon
8.3
Chicago Med
2015 · Sean Roman
6.2
Wildlike
2015 · Uncle
Verbatim: The Ferguson Case
2015 · Darren Wilson
6.8
The Stanford Prison Experiment
2015 · Executive Producer
8.4
Chicago P.D.
2014 · Sean Roman
5.8
Date and Switch
2014 · Lars
5.1
The Identical
2014 · William Hemsley
4.1
Loitering with Intent
2014 · Devon
4.4
Ass Backwards
2013 · Brian
4.8
Kilimanjaro
2013 · Doug
8.4
Chicago Fire
2012 · Sean Roman
6.9
Flight
2012 · Ken Evans
5.8
10 Years
2012 · Garrity
5.1
ATM
2012 · David Hargrove
6.5
Heroes and Demons
2012 · Dan (segment "The Second Bakery Attack")
5.9
Refuge
2012 · Sam