Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 05/31/26 | St. Louis Cardinals designated RHP Matt Pushard for assignment. |
| 05/31/26 | St. Louis Cardinals recalled RHP Hunter Dobbins from Memphis Redbirds. |
| 05/29/26 | St. Louis Cardinals optioned C Yohel Pozo to Memphis Redbirds. |
| 05/29/26 | St. Louis Cardinals recalled C Jimmy Crooks from Memphis Redbirds. |
| 05/29/26 | St. Louis Cardinals optioned 3B César Prieto to Memphis Redbirds. |
| 05/29/26 | St. Louis Cardinals selected the contract of OF Nelson Velázquez from Memphis Redbirds. |
| 05/26/26 | St. Louis Cardinals sent LF Lars Nootbaar on a rehab assignment to Springfield Cardinals. |
| 05/26/26 | St. Louis Cardinals optioned LHP Brycen Mautz to Memphis Redbirds. |
| 05/26/26 | St. Louis Cardinals recalled RHP Ryan Fernandez from Memphis Redbirds. |
| 05/26/26 | St. Louis Cardinals optioned LHP Brycen Mautz to Memphis Redbirds. |
| 05/24/26 | St. Louis Cardinals optioned RHP Ryan Fernandez to Memphis Redbirds. |
| 05/24/26 | St. Louis Cardinals recalled LHP Brycen Mautz from Memphis Redbirds. |
| 05/24/26 | St. Louis Cardinals optioned RHP Matt Svanson to Memphis Redbirds. |
| 05/23/26 | St. Louis Cardinals activated RHP Ryan Fernandez. |
| 05/23/26 | St. Louis Cardinals recalled RHP Ryan Fernandez from Memphis Redbirds. |
| 05/22/26 | St. Louis Cardinals placed LF Nathan Church on the 10-day injured list retroactive to May 21, 2026. Left shoulder strain. |
| 05/22/26 | St. Louis Cardinals recalled OF Bryan Torres from Memphis Redbirds. |
| 05/19/26 | St. Louis Cardinals sent LF Lars Nootbaar on a rehab assignment to Memphis Redbirds. |
| 05/18/26 | St. Louis Cardinals sent LHP Jared Shuster outright to Memphis Redbirds. |
| 05/16/26 | St. Louis Cardinals activated RHP Matt Pushard from the 15-day injured list. |
| 05/16/26 | St. Louis Cardinals designated LHP Jared Shuster for assignment. |
| 05/15/26 | St. Louis Cardinals sent LF Lars Nootbaar on a rehab assignment to Palm Beach Cardinals. |
| 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 optioned RHP Hunter Dobbins to Memphis Redbirds. |
| 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. |