
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.
Filmography

The Sopranos
1999 · 8.7

Chicago P.D.
2014 · 8.4

Chicago Fire
2012 · 8.4

Chicago Med
2015 · 8.3

1923
2022 · 8.3

Boardwalk Empire
2010 · 8.0

Law & Order: Special Victims Unit
1999 · 8.0

Ed
2000 · 7.7

True Blood
2008 · 7.6

The Alienist
2018 · 7.5

An American Crime
2007 · 7.3

Law & Order
1990 · 7.3

My Days of Mercy
2018 · 7.3

The Hurt Locker
2008 · 7.2

Big Sky
2020 · 7.2

The Guardian
2006 · 7.1

Extremely Wicked, Shockingly Evil and Vile
2019 · 7.0

Town Diary
2002 · 7.0

We Are Marshall
2006 · 6.9

Flight
2012 · 6.9

Blindfire
2020 · 6.8

Gaslit
2022 · 6.8

Jarhead
2005 · 6.7

Briarpatch
2020 · 6.7

Red Right Hand
2024 · 6.6

Heroes & Demons
2012 · 6.5

Bobby
2006 · 6.4

Easier with Practice
2009 · 6.4

The Luckiest Man in America
2025 · 6.3

Conversations with Other Women
2006 · 6.3

The Fugitive
2020 · 6.2

Wildlike
2015 · 6.2

Art School Confidential
2006 · 6.1

Avenues
2019 · 6.1

Love Lies Bleeding
2008 · 6.1

The Standoff at Sparrow Creek
2019 · 6.0

The Elder Son
2006 · 5.9

Refuge
2012 · 5.9

Date and Switch
2014 · 5.8

10 Years
2012 · 5.8

When a Stranger Calls
2006 · 5.7

Seven Days in Utopia
2011 · 5.7

Krews
2010 · 5.3

The Chameleon
2010 · 5.3

The Identical
2014 · 5.1

ATM
2012 · 5.1

The Second Bakery Attack
2010 · 4.9

Kilimanjaro
2013 · 4.8

Cruel World
2006 · 4.5

Open House
2010 · 4.5

I Know Who Killed Me
2007 · 4.5

Ass Backwards
2013 · 4.4

Bastard
2010 · 4.3

Loitering with Intent
2014 · 4.1

Jake Gyllenhaal Challenges the Winner of the Nobel Peace Prize
2010 · 3.8

Faith
2019 · 1.7
Kockroach
— · 0.0

Verbatim: The Ferguson Case
2015 · 0.0