[4] In his sophomore season with the Fighting Irish in 2016–17, Gilbert helped guide Notre Dame to the Frozen Four and was announced as the Hockey East's Best Defensive Defenseman and a Hockey East Third Team All-Star.

Gilbert concluded his collegiate career following his junior season with the Fighting Irish in the 2017–18 season, turning professional by signing a three-year, entry-level contract with the Chicago Blackhawks on April 14, 2018.

[5] Entering the final year of his entry-level deal on October 10, 2020, Gilbert was traded by the Blackhawks, alongside Brandon Saad, to the Colorado Avalanche in exchange for Anton Lindholm and Nikita Zadorov.

[6] Following two seasons in Colorado, Gilbert left as a free agent and was signed to a two-year, $1.525 million contract with the Calgary Flames on July 13, 2022.

[8] This United States biographical article relating to ice hockey is a stub.