Primeau, along with his brother, Wayne, and Las Vegas Wranglers general manager Ryan Mougenel, own and operate the Toronto-based Durham Hockey Institute. The three of them are also part-owners of the Whitby Fury, a team in the Ontario Junior Hockey League (OJHL). Keith's son Cayden played his college hockey at Northeastern University, before signing his entry level contract with the Montreal Canadiens after his sophomore season. Cayden was a 7th round draft pick of the Montreal Canadiens in the 2017 NHL Entry Draft and started 5 games for the silver medal winning United States men's national junior ice hockey team in the 2019 World Junior Ice Hockey Championships.