Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 01/15/26 | St. Louis Cardinals signed free agent SS Carlos Carrion to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent RHP Javier Martinez to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent OF Luis Estrella to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent SS Roberth Castillo to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent C Sebastian Rojas to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent OF Christopher Vargas to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent OF Emanuel Luna to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent RHP Rafeli Moronta to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent LHP Emilio Jimenez to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent OF Misael Sanchez to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent RHP Jordan Beltran to a minor league contract. |
| 01/15/26 | St. Louis Cardinals signed free agent OF Jhon Franganten to a minor league contract. |
| 01/14/26 | LHP Matthew Liberatore changed number to 32. |
| 01/14/26 | LHP Cooper Hjerpe changed number to 56. |
| 01/14/26 | C Leonardo Bernal changed number to 13. |
| 01/14/26 | RHP Riley O'Brien changed number to 61. |
| 01/13/26 | St. Louis Cardinals signed free agent RHP Ryne Stanek. |
| 01/13/26 | St. Louis Cardinals activated RHP Ryne Stanek. |
| 01/13/26 | St. Louis Cardinals traded 3B Nolan Arenado and cash to Arizona Diamondbacks for RHP Jack Martinez. |
| 01/13/26 | St. Louis Cardinals traded 3B Nolan Arenado and cash to Arizona Diamondbacks for RHP Jack Martinez. |
| 01/09/26 | Texas Rangers claimed RHP Zak Kent off waivers from St. Louis Cardinals. |
| 01/06/26 | St. Louis Cardinals activated LHP Justin Bruihl. |
| 01/06/26 | St. Louis Cardinals designated RHP Zak Kent for assignment. |
| 01/06/26 | Cleveland Guardians traded LHP Justin Bruihl to St. Louis Cardinals for cash. |
| 01/05/26 | St. Louis Cardinals signed free agent LHP Bruce Zimmermann to a minor league contract. |