"With any Expansion Draft, you know you're going to lose a good player," St. Louis Blues General Manager Doug Armstrong told stlouisblues.com. "That's the cost for each team of having an additional club join the League. We would like to wish Vince the best of luck with the Seattle Kraken."
Dunn was originally drafted by the Blues in the second round (No. 56 overall) of the 2015 NHL Draft.
Last season, the Mississauga, Ontario native scored six goals and 14 assists (20 points) in 43 games.
Dunn set career highs in goals (12), assists (23) and points (35) in 2018-19 and was part of the team that captured the first Stanley Cup in franchise history. Dunn recorded eight points (two goals, six assists) in 20 playoff games in 2019.
Since making his NHL debut with the Blues in 2017, Dunn has played in 267 regular-season games and recorded 32 goals, 70 assists (102 points) and a plus-22 rating.