Larry Pleau trades
| New Jersey Devils acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
 | 2006 1st round pick (#30-Matthew Corrente) | June 24, 2006 | 2006 1st round pick (#25-Patrik Berglund) |  |
| 2006 3rd round pick (#77-Vladimir Zharkov) | ||||
| Vancouver Canucks acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
 | Eric Weinrich | March 9, 2006 | Tomas Mojzis | |
| 2006 3rd round pick (#77-Vladimir Zharkov) | ||||
| St. Louis Blues acquire | Date | Carolina Hurricanes acquire | ||
|---|---|---|---|---|
| Jesse Boulerice | January 30, 2006 | Doug Weight |  |
| Mike Zigomanis | rights to Erkki Rajamaki | |||
| 2006 1st round pick (#30-Matthew Corrente) | ||||
| 2006 4th round pick (#106-Reto Berra) | ||||
| 2007 4th round pick (#96-Cade Fairchild) | ||||
| rights to Magnus Kahnberg | ||||
| St. Louis Blues acquire | Date | Nashville Predators acquire | ||
|---|---|---|---|---|
| Timofei Shishkanov | January 29, 2006 | Mike Sillinger |  |
| Edmonton Oilers acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
 | Blake Evans | December 13, 2005 | future considerations | |
| St. Louis Blues acquire | Date | Pittsburgh Penguins acquire | ||
|---|---|---|---|---|
| Steve Poapst | December 9, 2005 | Eric Boguniecki |  |
| Toronto Maple Leafs acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
 | Johnny Pohl | August 24, 2005 | future considerations | |
| Edmonton Oilers acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
| Chris Pronger | August 2, 2005 | Eric Brewer | |
| Doug Lynch | ||||
| Jeff Woywitka | ||||
| St. Louis Blues acquire | Date | Ottawa Senators acquire | ||
|---|---|---|---|---|
| Patrick Lalime | June 27, 2004 | 2005 conditional 4th round pick (#98-Ilya Zubov) |  |
| Dallas Stars acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
 | rights to Shawn Belle | June 25, 2004 | Jason Bacashihua | |
| Vancouver Canucks acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
| Sergei Varlamov | March 9, 2004 | Ryan Ready | |
| Arizona Coyotes acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
 | future considerations (Coyotes agreed to claim Brian Savage off waivers) | March 9, 2004 | Brian Savage | |
| Arizona Coyotes acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
| Tom Koivisto | March 9, 2004 | future considerations | |
| Arizona Coyotes acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
| Brent Johnson | March 4, 2004 | Mike Sillinger | |
| St. Louis Blues acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| Eric Weinrich | February 9, 2004 | 2004 5th round pick (#149-Gino Pisellini) |  |
| St. Louis Blues acquire | Date | Tampa Bay Lightning acquire | ||
|---|---|---|---|---|
| Erkki Rajamaki | October 27, 2003 | 2004 8th round pick (#245-Justin Keller) |  |
| Arizona Coyotes acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
| Tyson Nash | June 21, 2003 | 2003 5th round pick or 2004 4th round pick (2003 #148-Lee Stempniak) | |
| New Jersey Devils acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
| 2003 3rd round pick (#93-Ivan Khomutov) | June 21, 2003 | Mike Danton | |
| 2003 3rd round pick (#101-Konstantin Zakharov) | ||||
| St. Louis Blues acquire | Date | Tampa Bay Lightning acquire | ||
|---|---|---|---|---|
| 2003 2nd round pick (#62-David Backes) | June 21, 2003 | Cory Stillman | |
| St. Louis Blues acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| Chris Osgood | March 11, 2003 | Justin Papineau |  |
| 2003 3rd round pick (#84-Konstantin Barulin) | 2003 2nd round pick (#58-Jeremy Colliton) | |||