The Blues have signed general manager Doug Armstrong to a four-year contract extension with a team option for a fifth year, the team announced Wednesday.

Armstrong, who is also the team's president of hockey operations, is in his 10th season with the Blues. Since he became GM in 2010, the team has a 337-185-56 regular-season record (fourth-best in the NHL since the 2010-11) and has reached the playoffs six years in a row.