| | 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.) |
| | D | Signed (The St. Louis Blues signed D Leo Loof to an entry-level contract.) |
| | G | Sent to minors (The St. Louis Blues sent G Vadim Zherenko to the minors.) |
| | G | Sent to minors (The St. Louis Blues sent G Joel Hofer to the minors.) |
| | LW | Sent to minors (The St. Louis Blues sent F Hugh McGing to the minors.) |
| | D | Sent to minors (The St. Louis Blues sent D Tyler Tucker to the minors.) |
| | G | Called up from minors (The St. Louis Blues have recalled G Vadim Zherenko from minors.) |
| | LW | Called up from minors (The St. Louis Blues recalled F Hugh McGing from the minors.) |
| | G | Called up from minors (The St. Louis Blues recalled G Joel Hofer from the minors.) |
| | D | Called up from minors (The St. Louis Blues recalled D Tyler Tucker from the minors.) |
| | G | Called up from minors (The St. Louis Blues recalled G Joel Hofer from the minors.) |
| | D | Called up from minors (The St. Louis Blues recalled D Tyler Tucker from the minors.) |
| | LW | Called up from minors (The St. Louis Blues recalled F Hugh McGing from the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Dmitri Samorukov to the minors.) |
| | G | Sent to minors (The St. Louis Blues assigned G Vadim Zherenko to the minors.) |
| | D | Called up from minors (The St. Louis Blues recalled D Dmitri Samorukov from the minors.) |
| | D | Called up from minors (The St. Louis Blues recalled D Dmitri Samorukov from the minors.) |
| | D | Sent to minors (The St. Louis Blues assigned D Matthew Kessel to the minors.) |
| | G | Called up from minors (The St. Louis Blues recalled G Vadim Zherenko.) |
| | D | Called up from minors (The St. Louis Blues recalled D Matthew Kessel.) |
| | G | Sent to minors (The St. Louis Blues assigned G Joel Hofer to the minors.) |
| | LW | Activated (The St. Louis Blues activated F Jake Neighbours from injured reserve.) |
| | G | Suspension Over (G Jordan Binnington was reinstated from suspension.) |
| | D | Sent to minors (The St. Louis Blues sent D Tyler Tucker to the minors.) |
| | C | Sent to minors (The St. Louis Blues sent F Nikita Alexandrov to the minors.) |
| | G | Called up from minors (The St. Louis Blues have recalled G Joel Hofer from minors.) |
| | G | Suspended (The NHL suspended G Jordan Binnington for two games.) |
| | LW | Traded (The Detroit Red Wings traded F Jakub Vrana to the St. Louis Blues.) From |
| | C | Traded (The Detroit Red Wings acquired F Dylan McLaughlin from St. Louis.) To |
| | C | Called up from minors (The St. Louis Blues recalled F Nikita Alexandrov.) |
| | C | Traded (The St. Louis Blues traded F Ivan Barbashev to the Vegas Golden Knights.) To |
| | C | Sent to minors (The St. Louis Blues sent F Nikita Alexandrov to the minors.) |
| | RW | Claimed (The St. Louis Blues claimed F Kasperi Kapanen off waivers. ) |
| | C | Sent to minors (The St. Louis Blues assigned F Matthew Highmore to the minors.) |
| | LW | Activated (The St. Louis Blues activated F Brandon Saad from injured reserve.) |
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