# Brian Geraghty

Brian Timothy Geraghty (born May 13, 1975) is an American actor, known for his roles in the 2005 film Jarhead, the 2008 film The Hurt Locker, and in the 2012 film Flight, along with his recurring role in the HBO drama series Boardwalk Empire. He appeared as a regular on NBC's Chicago P.D. from 2014 to 2016 and played Theodore Roosevelt in the TV series The Alienist. From 2020 to 2022, he portrayed Ronald Pergman on the ABC thriller drama Big Sky. He also has a main role as Ranch Foreman Zane Davis on the Paramount+ western series 1923 (2022–present).

## Early life

Geraghty was born in Toms River, New Jersey, and is of Irish descent. He graduated from Toms River High School East in 1993 and then studied acting at the Neighborhood Playhouse School of Theatre before beginning his professional career in New York City; he later moved to Los Angeles.

## Career

Geraghty was featured in a small role in the crime drama The Sopranos. Feature roles soon followed, in such pictures as Jarhead, Bobby, The Guardian, We Are Marshall, and The Hurt Locker. He also appeared in the January 6, 2010, episode of Law & Order: Special Victims Unit, "Quickie", as a man intentionally infecting women with HIV. In 2013, he portrayed Agent Knox on the HBO crime drama series Boardwalk Empire. In August 2014, Geraghty was cast as a series regular on the second season of the NBC procedural Chicago P.D., playing Sean Roman. In 2018, Geraghty starred in the TNT drama The Alienist, as NYPD Police Commissioner Theodore Roosevelt.

## Personal life

In his free time, Geraghty enjoys surfing.

## Filmography
### Film

| Year | Title | Role | Notes |
| 2002 | Petty Crimes | Rookie Cop | |
| 2002 | Town Diary | Young Frank Ryan | |
| 2003 | Earl & Puppy | Terry | Short film |
| 2004 | Stateside | Chris | |
| 2005 | Conversations with Other Women | Groom | |
| 2005 | Cruel World | Collin | |
| 2005 | Jarhead | Private First Class Fergus O'Donnell | |
| 2006 | Art School Confidential | Stoob | |
| 2006 | Bobby | Jimmy | |
| 2006 | The Elder Son | Greg | |
| 2006 | The Guardian | Billy Hodge | |
| 2006 | We Are Marshall | Tom Bogdan | |
| 2006 | When a Stranger Calls | Bobby | |
| 2007 | An American Crime | Bradley | |
| 2007 | I Know Who Killed Me | Jerrod Pointer | |
| 2008 | The Hurt Locker | Owen Eldridge | |
| 2008 | Love Lies Bleeding | "Duke" | Direct-to-video |
| 2009 | Easier with Practice | Davy Mitchell | |
| 2010 | Bastard | Man | Short film |
| 2010 | The Chameleon | Brian Jansen | |
| 2010 | Krews | Henry McFarlin | |
| 2010 | Open House | David | |
| 2010 | The Second Bakery Attack | Dan | Short film |
| 2011 | Seven Days in Utopia | Jake | |
| 2011 | 10 Years | Garrity Liamsworth | |
| 2012 | ATM | David Hargrove | |
| 2012 | Flight | Ken Evans | |
| 2012 | Refuge | Sam | |
| 2013 | Ass Backwards | Brian Hickman | |
| 2013 | Kilimanjaro | Doug | |
| 2014 | Date and Switch | Lars | |
| 2014 | The Identical | William Hemsley | |
| 2014 | Loitering with Intent | Devon | |
| 2014 | WildLike | Uncle | |
| 2017 | My Days of Mercy | Weldon | |
| 2017 | Avenues | Jack | |
| 2018 | The Standoff at Sparrow Creek | Noah | |
| 2019 | Extremely Wicked, Shockingly Evil and Vile | Dan Dowd | |
| 2019 | Faith | Chris | |
| 2020 | Blindfire | Will Bishop | |
| 2024 | Red Right Hand | Sheriff Hollister | |
| 2024 | The Luckiest Man in America | | Post-production |

### Television

| Year | Title | Role | Notes |
| 1999 | Law & Order | Phillip Ludwick | Episode: "Hate" |
| 1999 | The Sopranos | Counter Boy | Episode: "The Legend of Tennessee Moltisanti" |
| 2001 | Ed | Ari | Episode: "Windows of Opportunity" |
| 2010–2015 | Law & Order: Special Victims Unit | Peter Butler / Sean Roman | Episodes: "Quickie" and "Daydream Believer" |
| 2012 | True Blood | Brian Eller | 3 episodes |
| 2013 | Boardwalk Empire | Warren Knox / Jim Tolliver | Recurring role (season 4) |
| 2014 | Ray Donovan | Jim Halloran | Recurring role (season 2) |
| 2014–2020 | Chicago P.D. | Sean Roman | Main cast (seasons 2–3); guest (season 7) |
| 2014–2020 | Chicago Fire | Sean Roman | Recurring role; 9 episodes |
| 2015–2016 | Chicago Med | Sean Roman | Guest role; 3 episodes |
| 2018 | The Alienist | Theodore Roosevelt | Main cast |
| 2020 | Briarpatch | Gene Colder | Main cast |
| 2020 | The Fugitive | Colin Murphy | Main cast |
| 2020–2022 | Big Sky | Ronald Pergman | Main cast (Seasons 1 & 2) |
| 2022 | Gaslit | Peter | Recurring role |
| 2022 | 1923 | Zane Davis | Main cast; miniseries |

## Awards and nominations

| Year | Award | Category | Work | Result |
| 2007 | Screen Actors Guild Award | Outstanding Performance by a Cast in a Motion Picture | Bobby | Nominated |
| 2009 | Gotham Award | Best Ensemble Performance | The Hurt Locker | Won |
| 2009 | Washington D.C. Area Film Critics Association Award | Best Ensemble | The Hurt Locker | Won |
| 2010 | Screen Actors Guild Award | Outstanding Performance by a Cast in a Motion Picture | The Hurt Locker | Nominated |
| 2014 | Screen Actors Guild Award | Outstanding Performance by an Ensemble in a Drama Series | Boardwalk Empire | Nominated |