
| Player | Date | P | Comment |
|---|---|---|---|
| 11/3/2026 | LW | Activated (The St. Louis Blues activated F Ross Johnston from injured reserve.) | |
| 10/31/2026 | D | Sent to minors (The St. Louis Blues assigned D Quinton Burns to the minors.) | |
| 10/30/2026 | D | Called up from minors (The St. Louis Blues recalled D Theo Lindstein from the minors.) | |
| 10/30/2026 | C | Sent to minors (The St. Louis Blues assigned F Otto Stenberg to the minors.) | |
| 10/27/2026 | RW | Activated (The St. Louis Blues activated F Alexey Toropchenko.) | |
| 10/24/2026 | D | Called up from minors (The St. Louis Blues recalled D Quinton Burns from the minors.) | |
| 10/23/2026 | D | Sent to minors (The St. Louis Blues assigned D Theo Lindstein to the minors.) | |
| 10/22/2026 | C | Waived (The St. Louis Blues waived F Zach Dean.) | |
| 10/21/2026 | C | Sent to minors (The St. Louis Blues assigned F Dylan Peterson to the minors.) | |
| 10/18/2026 | LW | Placed on Injured Reserve (The St. Louis Blues placed F Ross Johnston on injured reserve.) | |
| 10/18/2026 | C | Called up from minors (The St. Louis Blues recalled F Otto Stenberg from the minors.) | |
| 10/18/2026 | C | Called up from minors (The St. Louis Blues recalled F Aleksanteri Kaskimaki from the minors.) | |
| 10/14/2026 | D | Sent to minors (The St. Louis Blues assigned D Colin Ralph to the minors.) | |
| 10/12/2026 | D | Called up from minors (The St. Louis Blues recalled D Colin Ralph from the minors.) | |
| 10/11/2026 | C | Placed on Injured Reserve (The St. Louis Blues placed F Dillon Dube on injured reserve.) | |
| 10/11/2026 | C | Called up from minors (The St. Louis Blues recalled F Dylan Peterson from the minors.) | |
| 10/5/2026 | RW | Placed on Injured Reserve (The St. Louis Blues placed F Alexey Toropchenko on injured reserve.) | |
| 9/28/2026 | LW | Sent to minors (The St. Louis Blues assigned F Juraj Pekarcik to the minors.) | |
| 9/28/2026 | C | Sent to minors (The St. Louis Blues assigned F Maddox Dagenais to the minors.) | |
| 9/28/2026 | D | Sent to minors (The St. Louis Blues assigned D Michael Buchinger to the minors.) | |
| 9/28/2026 | D | Sent to minors (The St. Louis Blues assigned D Lukas Fischer to the minors.) | |
| 9/28/2026 | RW | Sent to minors (The St. Louis Blues assigned F Simon Robertsson to the minors.) | |
| 9/28/2026 | G | Sent to minors (The St. Louis Blues assigned G Vladimir Proskurin to the minors.) | |
| 9/28/2026 | G | Sent to minors (The St. Louis Blues assigned G Parker Gahagen to the minors.) | |
| 9/28/2026 | C | Sent to minors (The St. Louis Blues assigned F Jakub Stancl to the minors.) | |
| 9/28/2026 | D | Placed on Injured Reserve (The St. Louis Blues placed D Tyler Tucker on injured reserve.) | |
| 9/28/2026 | D | Placed on Injured Reserve (The St. Louis Blues placed D Logan Mailloux on injured reserve.) | |
| 9/28/2026 | D | Waived (The St. Louis Blues waived D Calle Rosen.) | |
| 9/28/2026 | G | Waived (The St. Louis Blues waived G Georgii Romanov.) | |
| 9/27/2026 | D | Claimed (The St. Louis Blues claimed D Justin Barron off waivers from the Nashville Predators.) From Nashville | |
| 9/27/2026 | D | Called up from minors (The St. Louis Blues recalled D Adam Jiricek from the minors.) | |
| 9/25/2026 | LW | Waived (The St. Louis Blues waived F Nathan Walker.) | |
| 9/25/2026 | C | Waived (The St. Louis Blues waived F Oskar Sundqvist.) | |
| 9/25/2026 | C | Waived (The St. Louis Blues waived F Jack Finley.) | |
| 9/25/2026 | C | Sent to minors (The St. Louis Blues assigned F Otto Stenberg to the minors.) | |
| 9/25/2026 | C | Sent to minors (The St. Louis Blues assigned F Aleksanteri Kaskimaki to the minors.) | |
| 9/25/2026 | C | Sent to minors (The St. Louis Blues assigned F Dylan Peterson to the minors.) | |
| 9/25/2026 | D | Sent to minors (The St. Louis Blues assigned D Adam Jiricek to the minors.) | |
| 9/23/2026 | RW | Sent to minors (The St. Louis Blues assigned F Nikita Susuev to the minors.) | |
| 9/23/2026 | D | Sent to minors (The St. Louis Blues assigned D Colin Ralph to the minors.) | |
| 9/19/2026 | D | Waived (The St. Louis Blues waived D Marc-Andre Gaudet.) | |
| 9/17/2026 | G | Signed (The St. Louis Blues signed G Vladimir Proskurin.) | |
| 9/17/2026 | C | Signed (The St. Louis Blues signed F Maddox Dagenais.) | |
| 9/11/2026 | C | Placed on Injured Reserve (The St. Louis Blues placed F Adam Jecho on injured reserve.) | |
| 7/1/2026 | LW | Signed (The St. Louis Blues signed F Ross Johnston.) | |
| 7/1/2026 | C | Signed (The St. Louis Blues signed F Dillon Dube.) | |
| 7/1/2026 | D | Became Unrestricted Free Agent (D Hunter Skinner elected free agency.) | |
| 6/30/2026 | D | Became Unrestricted Free Agent (D Hunter Skinner elected free agency.) | |
| 6/30/2026 | C | Contract Expired (The St. Louis Blues did not offer a contract to F Thomas Bordeleau.) | |
| 6/30/2026 | D | Contract Expired (The St. Louis Blues did not offer a contract to D Matthew Kessel.) | |
| 6/30/2026 | LW | Waived (The St. Louis Blues waived F Jonathan Drouin.) | |
| 6/30/2026 | RW | Became Unrestricted Free Agent (F Julien Gauthier elected free agency.) | |
| 6/30/2026 | G | Became Unrestricted Free Agent (G Vadim Zherenko elected free agency.) | |
| 6/29/2026 | LW | Became Unrestricted Free Agent (F Hugh McGing elected free agency.) | |
| 6/29/2026 | D | Became Unrestricted Free Agent (D Justin Holl elected free agency.) | |
| 6/27/2026 | C | Drafted (The St. Louis Blues drafted F Colin Fitzgerald) | |
| 6/27/2026 | RW | Drafted (The St. Louis Blues drafted F Lars Steiner.) | |
| 6/27/2026 | RW | Drafted (The St. Louis Blues drafted F Carter Stevens.) | |
| 6/27/2026 | D | Drafted (The St. Louis Blues drafted D Landon Nycz) | |
| 6/27/2026 | D | Drafted (The St. Louis Blues drafted D Nicholas Bogas.) | |
| 6/27/2026 | G | Drafted (The St. Louis Blues drafted G Vladimir Proskurin) | |
| 6/27/2026 | D | Drafted (The St. Louis Blues drafted D Luke Schairer.) | |
| 6/27/2026 | D | Traded (The Toronto Maple Leafs traded D Brandon Carlo to the St. Louis Blues.) From Toronto | |
| 6/26/2026 | C | Drafted (The St. Louis Blues drafted F Tynan Lawrence.) | |
| 6/26/2026 | C | Traded (The Anaheim Ducks traded F Mason McTavish to the St. Louis Blues.) From Anaheim | |
| 6/26/2026 | C | Drafted (The St. Louis Blues drafted F Maddox Dagenais.) | |
| 6/23/2026 | RW | Traded (The St. Louis Blues traded F Jordan Kyrou to the Washington Capitals.) To Washington | |
| 6/23/2026 | C | Traded (The Washington Capitals traded F Connor McMichael to the St. Louis Blues.) From Washington | |
| 6/23/2026 | C | Traded (The Washington Capitals traded F Milton Gastrin to the St. Louis Blues.) From Washington |