Roster y Personal de los Cardinals
Transacciones
| Fecha | Transacción |
| 02/10/26 | Washington Nationals cambian a RHP George Soriano a St. Louis Cardinals por RHP Andre Granillo. |
| 02/10/26 | Washington Nationals cambian a RHP George Soriano a St. Louis Cardinals por RHP Andre Granillo. |
| 02/06/26 | St. Louis Cardinals agente libre firmado RHP Justin Militello con un contrato de la ligas menores. |
| 02/06/26 | St. Louis Cardinals reclamado 3B Bryan Ramos fuera de waivers de Baltimore Orioles. |
| 02/05/26 | St. Louis Cardinals agente libre firmado OF Bligh Madris con un contrato de la ligas menores. |
| 02/02/26 | St. Louis Cardinals cambian a 2B Brendan Donovan a Seattle Mariners por CF Colton Ledbetter, SHP Jurrangelo Cijntje, OF Tai Peete, Draft Pick y Draft Pick. |
| 02/02/26 | St. Louis Cardinals cambian a 2B Brendan Donovan a Seattle Mariners por CF Colton Ledbetter, SHP Jurrangelo Cijntje, OF Tai Peete, Draft Pick y Draft Pick. |
| 02/02/26 | St. Louis Cardinals cambian a 2B Brendan Donovan a Seattle Mariners por CF Colton Ledbetter, SHP Jurrangelo Cijntje, OF Tai Peete, Draft Pick y Draft Pick. |
| 02/02/26 | St. Louis Cardinals cambian a 2B Brendan Donovan a Seattle Mariners por CF Colton Ledbetter, SHP Jurrangelo Cijntje, OF Tai Peete, Draft Pick y Draft Pick. |