| | D | Placed on Injured Reserve (The St. Louis Blues placed D Josh Jacobs on injured reserve.) |
| | LW | Sent to minors (The St. Louis Blues assigned F Isaac Ratcliffe to the minors.) |
| | D | Placed on Injured Reserve (The St. Louis Blues placed D Anton Malmstorm on injured reserve.) |
| | D | Waived (The St. Louis Blues waived D Calle Rosen.) |
| | LW | Waived (The St. Louis Blues waived F Nathan Walker.) |
| | RW | Sent to minors (The St. Louis Blues assigned F Mathias Laferriere to the minors.) |
| | LW | Waived (The St. Louis Blues waived F Mackenzie MacEachern.) |
| | C | Sent to minors (The St. Louis Blues assigned F Zach Dean to the minors.) |
| | G | Waived (The St. Louis Blues waived G Malcolm Subban.) |
| | D | Sent to minors (The St. Louis Blues assigned D Matthew Kessel to the minors.) |
| | C | Sent to minors (The St. Louis Blues assigned F Zachary Bolduc to the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Wyatt Kalynuk to the minors.) |
| | LW | Sent to minors (The St. Louis Blues assigned F Hugh McGing to the minors.) |
| | C | Sent to minors (The St. Louis Blues assigned F Matthew Peca to the minors.) |
| | C | Sent to minors (The St. Louis Blues assigned F Will Bitten to the minors.) |
| | C | Sent to minors (The St. Louis Blues assigned F Keean Washkurak to the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Leo Loof to the minors.) |
| | C | Sent to minors (The St. Louis Blues assigned F Samuel Bitten to the minors.) |
| | G | Sent to minors (The St. Louis Blues assigned G Colten Ellis to the minors.) |
| | C | Sent to minors (The St. Louis Blues assigned F Tanner Dickinson to the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Jeremie Biakabutuka to the minors.) |
| | C | Sent to minors (The St. Louis Blues assigned F Drew Callin to the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Hunter Skinner to the minors.) |
| | C | Waived (The St. Louis Blues waived F Adam Gaudette.) |
| | C | Sent to minors (The St. Louis Blues assigned F Mitchell Hoelscher to the minors.) |
| | G | Sent to minors (The St. Louis Blues assigned G Will Cranley to the minors.) |
| | LW | Released (The St. Louis Blues released F Nick Ritchie.) |
| | G | Sent to minors (The St. Louis Blues assigned G Vadim Zherenko to the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Joseph Duszak to the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Austin Osmanski to the minors.) |
| | C | Sent to minors (The St. Louis Blues assigned F Mikhail Abramov to the minors.) |
| | D | Released (The St. Louis Blues released D Andy Welinksi.) |
| | C | Sent to minors (The St. Louis Blues assigned F Andre Heim to the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Marc-Andre Gaudet to the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Michael Buchinger to the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Quinton Burns to the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Matthew Mayich to the minors.) |
| | G | Called up from minors (The St. Louis Blues recalled G Joel Hofer.) |
| | C | Called up from minors (The St. Louis Blues recalled F Zachary Bolduc.) |
| | D | Sent to minors (The St. Louis Blues assigned D Paul Fischer to the minors.) |
| | C | Called up from minors (The St. Louis Blues recalled F Matthew Peca.) |
| | LW | Sent to minors (The St. Louis Blues assigned F Juraj Pekarcik to the minors.) |
| | G | Called up from minors (The St. Louis Blues recalled G Colten Ellis.) |
| | C | Called up from minors (The St. Louis Blues recalled F Nikita Alexandrov.) |
| | RW | Called up from minors (The St. Louis Blues recalled F Mathias Laferriere.) |
| | C | Called up from minors (The St. Louis Blues recalled F Tanner Dickinson.) |
| | G | Called up from minors (The St. Louis Blues recalled G Will Cranley.) |
| | C | Called up from minors (The St. Louis Blues recalled F Samuel Bitten.) |
| | D | Called up from minors (The St. Louis Blues recalled D Marc-Andre Gaudet.) |
| | D | Sent to minors (The St. Louis Blues assigned D Theo Lindstein to the minors.) |
| | C | Sent to minors (The St. Louis Blues assigned F Jakub Stancl to the minors.) |
| | D | Called up from minors (The St. Louis Blues recalled D Hunter Skinner.) |
| | C | Called up from minors (The St. Louis Blues recalled F Mitchell Hoelscher.) |
| | G | Called up from minors (The St. Louis Blues recalled G Vadim Zherenko.) |
| | C | Called up from minors (The St. Louis Blues recalled F Zach Dean.) |
| | RW | Sent to minors (The St. Louis Blues assigned F Nikita Susuyev to the minors.) |
| | C | Signed (The St. Louis Blues signed F Drew Callin.) |
| | C | Called up from minors (The St. Louis Blues recalled F Sam Bitten from the minors. ) |
| | D | Called up from minors (The St. Louis Blues recalled D Joseph Duszak.) |
| | C | Called up from minors (The St. Louis Blues recalled F Will Bitten.) |
| | C | Called up from minors (The St. Louis Blues recalled F Keean Washkurak.) |
| | D | Called up from minors (The St. Louis Blues recalled D Andy Welinski from the minors. ) |
| | D | Called up from minors (The St. Louis Blues recalled D Matthew Kessel.) |
| | D | Called up from minors (The St. Louis Blues recalled D Austin Osmanski.) |
| | C | Sent to minors (The St. Louis Blues assigned F Otto Stenberg to the minors.) |
| | C | Sent to minors (The St. Louis Blues assigned F Dalibor Dvorsky to the minors.) |
| | C | Called up from minors (The St. Louis Blues recalled F Mikhail Abramov.) |
| | D | Signed (The St. Louis Blues signed D Anton Malmstrom.) |
| | LW | Signed (The St. Louis Blues signed F Nick Ritchie.) |
| | D | Retired (D Tommy Cross retired.) |
| | C | Signed (The St. Louis Blues signed F Oskar Sundqvist.) |
| | LW | Signed (The St.Louis Blues signed F Hugh McGing to a two-way contract.) |
| | LW | Signed (The St. Louis Blues signed F Mackenzie MacEachern.) |
| | G | Signed (The St. Louis Blues signed G Malcolm Subban.) |
| | D | Signed (The St. Louis Blues signed D Wyatt Kalynuk.) |
| | D | Signed (The St. Louis Blues signed D Josh Jacobs.) |
| | G | Became Unrestricted Free Agent (G Thomas Greiss elected free agency.) |
| | C | Became Unrestricted Free Agent (F Logan Brown elected free agency.) |
| | D | Signed (The St.Louis Blues signed D Tyler Tucker to a standard contract.) |
| | C | Became Unrestricted Free Agent (F Tyler Pitlick elected free agency.) |
| | LW | Became Unrestricted Free Agent (F Josh Leivo elected free agency.) |
| | D | Drafted (The St. Louis Blues drafted D Matthew Mayich.) |
| | RW | Drafted (The St. Louis Blues drafted F Nikita Susuyev.) |
| | LW | Drafted (The St. Louis Blues drafted LW Juraj Pekarcik.) |
| | D | Drafted (The St.Louis Blues drafted D Paul Fischer.) |
| | C | Drafted (The St.Louis Blues drafted F Jakub Stancl.) |
| | D | Drafted (The St. Louis Blues drafted D Quinton Burns.) |
| | C | Drafted (The St.Louis Blues drafted F Otto Stenberg.) |
| | C | Drafted (The St.Louis Blues drafted F Dalibor Dvorsky.) |
| | D | Drafted (The St.Louis Blues drafted D Theo Lindstein.) |
| | C | Traded (The Philadelphia Flyers traded F Kevin Hayes to the St. Louis Blues.) From |
| | D | Signed (The St. Louis Blues signed D Scott Perunovich. ) |
| | C | Signed (The St.Louis Blues signed F Adam Gaudette to a two-way contract.) |
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