The Ottawa Senators acquired forward Zach Sanford from the St. Louis Blues for center Logan Brown and a conditional fourth-round draft pick in 2022.

The St. Louis Blues acquired winger Pavel Buchnevich from the New York Rangers for winger Sammy Blais and a second-round draft pick in 2022.

The Montreal Canadiens acquired goaltender Jake Allen and a seventh-round draft pick in 2022 from the St. Louis Blues for a third-round draft pick in 2020 and a seventh-round draft pick in 2020.

The St. Louis Blues acquired defenseman Marco Scandella from the Montreal Canadiens for a second-round draft pick in 2020 and a conditional fourth-round draft pick in 2021.

The Detroit Red Wings acquired winger Robby Fabbri from the St. Louis Blues for center Jacob De La Rose.

The St. Louis Blues acquired defenseman Justin Faulk and a fifth-round draft pick in 2020 from the Carolina Hurricanes for defenseman Joel Edmundson, winger Dominik Bokk and a seventh-round draft pick in 2021.

The St. Louis Blues acquired defenseman Andreas Borgman from the Toronto Maple Leafs for defenseman Jordan Schmaltz.

The St. Louis Blues acquired forward Dakota Joshua from the Toronto Maple Leafs for future considerations.

The St. Louis Blues acquired defenseman Michael Del Zotto from the Anaheim Ducks for a sixth-round draft pick in 2019.

The St. Louis Blues acquired goaltender Jared Coreau from the Anaheim Ducks for future considerations.

The St. Louis Blues acquired defenseman Jakub Jerabek from the Edmonton Oilers for a conditional sixth-round draft pick in 2020.

The St. Louis Blues acquired center Ryan O'Reilly from the Buffalo Sabres for winger Tage Thompson, forwards Vladimir Sobotka and Patrik Berglund, a first-round draft pick in 2019 and a second-round draft pick in 2021.

The Winnipeg Jets acquired center Paul Stastny from the St. Louis Blues for winger Erik Foley, a first-round draft pick in 2018 and a conditional fourth-round draft pick in 2020.

The St. Louis Blues acquired winger Nikita Soshnikov from the Toronto Maple Leafs for a fourth-round draft pick in 2019.

The Pittsburgh Penguins acquired winger Ryan Reaves and a second-round draft pick (No. 51 overall) in 2017 from the St. Louis Blues for center Oskar Sundqvist and a first-round draft pick (No. 31 overall) in 2017.

The St. Louis Blues acquired forward Brayden Schenn from the Philadelphia Flyers for forward Jori Lehtera, a first-round draft pick (No. 27 overall) in 2017 and a conditional first-round draft pick in 2018.

The Washington Capitals acquired defenseman Kevin Shattenkirk and goaltender Pheonix Copley from the St. Louis Blues for forwards Zach Sanford and Brad Malone, a first-round draft pick in 2017 and a conditional second-round draft pick in 2019.

The St. Louis Blues acquired defenseman Reid McNeill from the Pittsburgh Penguins for winger Danny Kristo.

The St. Louis Blues acquired winger Nail Yakupov from the Edmonton Oilers for forward Zachary Pochiro and a conditional third-round draft pick in 2017.

The Buffalo Sabres acquired goaltender Anders Nilsson from the St. Louis Blues for a fifth-round draft pick in 2017.

The Calgary Flames acquired goaltender Brian Elliott from the St. Louis Blues for a second-round draft pick in 2016 and a conditional third-round draft pick in 2018.

The St. Louis Blues acquired forward Zach Phillips from the Boston Bruins for future considerations.

The St. Louis Blues acquired goaltender Anders Nilsson from the Edmonton Oilers for goaltender Niklas Lundstrom and a fifth-round draft pick in 2016.

The St. Louis Blues acquired defenseman Richard Nedomlel from the Detroit Red Wings for future considerations.

The Washington Capitals acquired winger T.J. Oshie from the St. Louis Blues for winger Troy Brouwer, goaltender Pheonix Copley and a third-round draft pick in 2016.

The St. Louis Blues acquired defenseman Konrad Abeltshauser from the San Jose Sharks for a conditional seventh-round draft pick in 2016.

The St. Louis Blues acquired forward Olli Jokinen from the Toronto Maple Leafs for forward Joakim Lindstrom and a conditional sixth-round draft pick in 2016.

The Pittsburgh Penguins acquired defenseman Ian Cole from the St. Louis Blues for defenseman Robert Bortuzzo and a seventh-round draft pick in 2016.

The St. Louis Blues acquired defenseman Zbynek Michalek and a conditional third-round draft pick in 2015 from the Arizona Coyotes for forward Maxim Letunov.

The St. Louis Blues acquired forward Adam Cracknell from the Columbus Blue Jackets for future considerations.

The Pittsburgh Penguins acquired center Maxim Lapierre from the St. Louis Blues for center Marcel Goc.

The Columbus Blue Jackets acquired defenseman Jordan Leopold from the St. Louis Blues for a fifth-round draft pick in 2016.

The Toronto Maple Leafs acquired defenseman Roman Polak from the St. Louis Blues for defenseman Carl Gunnarsson and a fourth-round draft pick in 2014.