Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 04/16/26 | RHP Gordon Graceffo changed number to 44. |
| 04/16/26 | 2B José Fermín changed number to 15. |
| 04/16/26 | LHP Justin Bruihl changed number to 47. |
| 04/16/26 | 2B Nolan Gorman changed number to 16. |
| 04/16/26 | RHP Ryan Fernandez changed number to 64. |
| 04/16/26 | 1B Alec Burleson changed number to 41. |
| 04/16/26 | SS Masyn Winn changed number to 0. |
| 04/16/26 | RF Jordan Walker changed number to 18. |
| 04/16/26 | SS JJ Wetherholt changed number to 26. |
| 04/16/26 | 3B Ramón Urías changed number to 29. |
| 04/16/26 | RHP Matt Svanson changed number to 49. |
| 04/16/26 | RHP Ryne Stanek changed number to 55. |
| 04/16/26 | RHP George Soriano changed number to 65. |
| 04/16/26 | CF Victor Scott II changed number to 11. |
| 04/16/26 | LHP JoJo Romero changed number to 59. |
| 04/16/26 | C Yohel Pozo changed number to 63. |
| 04/16/26 | 2B Thomas Saggese changed number to 25. |
| 04/16/26 | RHP Andre Pallante changed number to 53. |
| 04/16/26 | C Pedro Pagés changed number to 43. |
| 04/16/26 | RHP Riley O'Brien changed number to 61. |
| 04/16/26 | RHP Michael McGreevy changed number to 36. |
| 04/16/26 | LHP Matthew Liberatore changed number to 32. |
| 04/16/26 | C Iván Herrera changed number to 48. |
| 04/16/26 | RHP Dustin May changed number to 3. |
| 04/16/26 | RHP Kyle Leahy changed number to 62. |
| 04/16/26 | LF Nathan Church changed number to 27. |
| 04/16/26 | St. Louis Cardinals sent LHP Jared Shuster outright to Memphis Redbirds. |
| 04/15/26 | RHP Ryan Fernandez changed number to 42. |
| 04/15/26 | SS JJ Wetherholt changed number to 42. |
| 04/15/26 | 1B Alec Burleson changed number to 42. |
| 04/15/26 | C Pedro Pagés changed number to 42. |
| 04/15/26 | RHP Gordon Graceffo changed number to 42. |
| 04/15/26 | 3B Ramón Urías changed number to 42. |
| 04/15/26 | 2B Thomas Saggese changed number to 42. |
| 04/15/26 | RHP Matt Svanson changed number to 42. |
| 04/15/26 | LHP Justin Bruihl changed number to 42. |
| 04/15/26 | C Yohel Pozo changed number to 42. |
| 04/15/26 | SS Masyn Winn changed number to 42. |
| 04/15/26 | RHP Andre Pallante changed number to 42. |
| 04/15/26 | 2B José Fermín changed number to 42. |
| 04/15/26 | RHP Riley O'Brien changed number to 42. |
| 04/15/26 | RHP Michael McGreevy changed number to 42. |
| 04/15/26 | LHP Matthew Liberatore changed number to 42. |
| 04/15/26 | RHP George Soriano changed number to 42. |
| 04/15/26 | RHP Kyle Leahy changed number to 42. |
| 04/15/26 | 2B Nolan Gorman changed number to 42. |
| 04/15/26 | RHP Ryne Stanek changed number to 42. |
| 04/15/26 | RHP Dustin May changed number to 42. |
| 04/15/26 | LHP JoJo Romero changed number to 42. |
| 04/15/26 | RF Jordan Walker changed number to 42. |
| 04/15/26 | CF Victor Scott II changed number to 42. |
| 04/15/26 | LF Nathan Church changed number to 42. |
| 04/15/26 | C Iván Herrera changed number to 42. |
| 04/15/26 | St. Louis Cardinals sent RHP Matt Pushard on a rehab assignment to Memphis Redbirds. |
| 04/13/26 | St. Louis Cardinals designated LHP Jared Shuster for assignment. |
| 04/13/26 | RHP Cade Winquest returned to St. Louis Cardinals from New York Yankees. |
| 04/13/26 | St. Louis Cardinals recalled RHP Ryan Fernandez from Memphis Redbirds. |
| 04/09/26 | St. Louis Cardinals signed free agent RHP Leonil De Leon to a minor league contract. |
| 04/07/26 | 2B Brayden Smith roster status changed by St. Louis Cardinals. |
| 04/07/26 | St. Louis Cardinals traded LHP Nick Raquet to Baltimore Orioles for 2B Brayden Smith. |
| 04/07/26 | St. Louis Cardinals traded LHP Nick Raquet to Baltimore Orioles for 2B Brayden Smith. |
| 04/05/26 | St. Louis Cardinals designated LHP Nick Raquet for assignment. |
| 04/05/26 | Boston Red Sox traded RHP Patrick Galle to St. Louis Cardinals. |
| 04/05/26 | St. Louis Cardinals optioned RHP Chris Roycroft to Memphis Redbirds. |
| 04/05/26 | St. Louis Cardinals selected the contract of LHP Jared Shuster from Memphis Redbirds. |