Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 09/29/26 | St. Louis Cardinals activated RHP Hunter Dobbins from the 15-day injured list. |
| 09/28/26 | St. Louis Cardinals activated LF Joshua Báez from the 10-day injured list. |
| 09/28/26 | St. Louis Cardinals activated 3B Blaze Jordan from the 10-day injured list. |
| 09/28/26 | St. Louis Cardinals activated RF Everson Pereira from the 10-day injured list. |
| 09/28/26 | St. Louis Cardinals recalled RHP Tekoah Roby from Memphis Redbirds. |
| 09/28/26 | St. Louis Cardinals recalled RHP Richard Fitts from Memphis Redbirds. |
| 09/28/26 | St. Louis Cardinals recalled LHP Cooper Hjerpe from Memphis Redbirds. |
| 09/28/26 | St. Louis Cardinals recalled C Jimmy Crooks from Memphis Redbirds. |
| 09/28/26 | St. Louis Cardinals recalled RHP Matt Svanson from Memphis Redbirds. |
| 09/28/26 | St. Louis Cardinals claimed RHP Chase Hampton off waivers from Washington Nationals. |
| 09/28/26 | St. Louis Cardinals recalled RHP Ryan Fernandez from Memphis Redbirds. |
| 09/25/26 | St. Louis Cardinals recalled RHP Hancel Rincon from Memphis Redbirds. |
| 09/25/26 | St. Louis Cardinals optioned LHP Cooper Hjerpe to Memphis Redbirds. |
| 09/18/26 | St. Louis Cardinals released 3B Ramón Urías. |
| 09/18/26 | St. Louis Cardinals placed LF Joshua Báez on the 10-day injured list. Left oblique strain. |
| 09/18/26 | St. Louis Cardinals sent RHP Peter Strzelecki outright to Memphis Redbirds. |
| 09/18/26 | St. Louis Cardinals recalled 3B César Prieto from Memphis Redbirds. |
| 09/17/26 | St. Louis Cardinals sent RF Everson Pereira on a rehab assignment to Memphis Redbirds. |
| 09/17/26 | St. Louis Cardinals sent RF Everson Pereira on a rehab assignment to Memphis Redbirds. |
| 09/17/26 | St. Louis Cardinals sent RF Everson Pereira on a rehab assignment to Memphis Redbirds. |
| 09/16/26 | RF Jordan Walker changed number to 18. |
| 09/16/26 | St. Louis Cardinals activated 2B JJ Wetherholt from the 10-day injured list. |
| 09/16/26 | St. Louis Cardinals designated RHP Peter Strzelecki for assignment. |
| 09/16/26 | LF Bryan Torres changed number to 39. |
| 09/16/26 | St. Louis Cardinals designated 3B Ramón Urías for assignment. |
| 09/16/26 | St. Louis Cardinals activated RHP Peter Strzelecki from the 15-day injured list. |
| 09/15/26 | LF Bryan Torres changed number to 21. |
| 09/14/26 | RF Jordan Walker changed number to 21. |
| 09/08/26 | St. Louis Cardinals sent RHP Peter Strzelecki on a rehab assignment to Memphis Redbirds. |
| 09/08/26 | St. Louis Cardinals activated SS Masyn Winn from the 10-day injured list. |
| 09/08/26 | St. Louis Cardinals optioned 3B César Prieto to Memphis Redbirds. |
| 09/06/26 | St. Louis Cardinals recalled LHP Cooper Hjerpe from Memphis Redbirds. |
| 09/06/26 | St. Louis Cardinals optioned RHP Hancel Rincon to Memphis Redbirds. |
| 09/04/26 | St. Louis Cardinals activated RHP Andre Pallante from the 15-day injured list. |
| 09/04/26 | St. Louis Cardinals optioned RHP Ryan Fernandez to Memphis Redbirds. |
| 09/01/26 | St. Louis Cardinals recalled CF Victor Scott II from Memphis Redbirds. |
| 09/01/26 | St. Louis Cardinals recalled C Leo Bernal from Memphis Redbirds. |
| 09/01/26 | St. Louis Cardinals selected the contract of RHP Hancel Rincon from Memphis Redbirds. |