Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 04/09/26 | St. Louis Cardinals signed free agent RHP Leonil De Leon to a minor league contract. |
| 04/07/26 | 2B Brayden Smith roster status changed by St. Louis Cardinals. |
| 04/07/26 | St. Louis Cardinals traded LHP Nick Raquet to Baltimore Orioles for 2B Brayden Smith. |
| 04/07/26 | St. Louis Cardinals traded LHP Nick Raquet to Baltimore Orioles for 2B Brayden Smith. |
| 04/05/26 | St. Louis Cardinals designated LHP Nick Raquet for assignment. |
| 04/05/26 | St. Louis Cardinals selected the contract of LHP Jared Shuster from Memphis Redbirds. |
| 04/05/26 | Boston Red Sox traded RHP Patrick Galle to St. Louis Cardinals. |
| 04/05/26 | St. Louis Cardinals optioned RHP Chris Roycroft to Memphis Redbirds. |