Marlins Roster & Staff
Transactions
| Date | Transaction |
| 12/15/25 | Miami Marlins signed free agent 1B Brian Navarreto to a minor league contract. |
| 12/15/25 | Miami Marlins signed free agent SS Jesús Bastidas to a minor league contract. |
| 12/10/25 | Philadelphia Phillies purchased contract of RHP Zach McCambley in the Rule 5 Draft. |
| 12/10/25 | St. Louis Cardinals purchased contract of RHP Matt Pushard in the Rule 5 Draft. |
| 12/10/25 | Miami Marlins purchased contract of RHP Jake Smith in the Rule 5 Draft, AAA Phase. |
| 12/10/25 | Miami Marlins purchased contract of RHP Livan Reinoso in the Rule 5 Draft, AAA Phase. |
| 12/05/25 | RHP Zach Brzykcy roster status changed by Miami Marlins. |
| 12/05/25 | Miami Marlins optioned RHP Zach Brzykcy to Jacksonville Jumbo Shrimp. |