[1] He was a production executive at Columbia Pictures at Sony Pictures Entertainment,[2] where he worked for nine years on films including Bottle Rocket (1996), The People vs. Larry Flynt (1996), Gattaca (1997), Girl, Interrupted (1999), and Charlie's Angels (2000).

He left Sony and worked as executive producer on Brokeback Mountain (2005).

[3] Costigan started a production company, Corduroy Films, in 2002.

[3] Costigan left Scott Free to work full-time as a film producer.

He started the production company COTA Films and signed a two-year deal with Sony.