Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 05/08/26 | St. Louis Cardinals signed free agent RHP Jose Vega to a minor league contract. |
| 05/05/26 | St. Louis Cardinals placed 3B Ramón Urías on the 10-day injured list. Right elbow lateral epicondylitis. |
| 05/05/26 | St. Louis Cardinals recalled LF Thomas Saggese from Memphis Redbirds. |
| 05/04/26 | St. Louis Cardinals recalled 2B César Prieto from Memphis Redbirds. |
| 05/04/26 | St. Louis Cardinals optioned LF Thomas Saggese to Memphis Redbirds. |
| 05/03/26 | Chicago Cubs claimed LHP Luis Peralta off waivers from St. Louis Cardinals. |
| 05/01/26 | St. Louis Cardinals designated LHP Luis Peralta for assignment. |
| 05/01/26 | St. Louis Cardinals selected the contract of LHP Jared Shuster from Memphis Redbirds. |
| 05/01/26 | St. Louis Cardinals optioned RHP Hunter Dobbins to Memphis Redbirds. |
| 05/01/26 | St. Louis Cardinals optioned RHP Hunter Dobbins to Memphis Redbirds. |