Costigan played college football for the Bryant Bulldogs from 2015 to 2018.[1] He played in 44 games, starting 29, where he had 285 total tackles, 46.5 tackles for a loss, 26 sacks, three interceptions, 13 forced fumbles, three fumble recoveries, and one blocked kick.[1][2]
Professional career
Los Angeles Chargers
Costigan signed with the Los Angeles Chargers as an undrafted free agent on August 12, 2019.[3] He was released with final roster cuts.[4]
Edmonton Elks
Costigan signed as a free agent with the Edmonton Eskimos on February 7, 2020.[5] However, he did not play in 2020 due to the cancellation of the 2020 CFL season.[2] Following training camp in 2021, he made the active roster for the newly named Edmonton Elks and made his professional debut on August 7, 2021, against the Ottawa Redblacks.[6] He played in 11 regular season games that year where he recorded 24 defensive tackles and lead the team with six sacks.[2] In 2022, Costigan again played in 11 regular season games for the Elks where he had 14 defensive tackles, three special teams tackles, and three sacks.[2]
Montreal Alouettes
On August 31, 2022, Costigan was traded to the Montreal Alouettes along with Nafees Lyon for Avery Ellis and a third-round pick in the 2023 CFL Draft.[7] He played in seven games for the Alouettes where he had three defensive tackles, one special teams tackle, one sack, and two forced fumbles.[2] He became a free agent upon the expiry of his contract on February 14, 2023.[8]
Toronto Argonauts
On the first day of free agency, on February 14, 2023, it was announced that Costigan had signed with the Toronto Argonauts.[9] He played in 13 regular season games where he had 17 defensive tackles, six sacks, and two forced fumbles. He was released on February 14, 2024, after the team re-signed Shawn Oakman.[10]
Personal life
Costigan was born to parents Patricia Brennan and Thomas Costigan.[1]