Marlins Roster & Staff
Transactions
| Date | Transaction |
| 12/30/25 | Miami Marlins designated 1B Eric Wagaman for assignment. |
| 12/30/25 | Los Angeles Dodgers traded LF Esteury Ruiz to Miami Marlins for RHP Adriano Marrero. |
| 12/30/25 | Los Angeles Dodgers traded LF Esteury Ruiz to Miami Marlins for RHP Adriano Marrero. |
| 12/29/25 | Miami Marlins signed free agent CF Daniel Johnson to a minor league contract. |
| 12/28/25 | Miami Marlins signed free agent RHP Pete Fairbanks. |
| 12/27/25 | Cincinnati Reds traded CF Ethan O'Donnell to Miami Marlins for CF Dane Myers. |
| 12/27/25 | Cincinnati Reds traded CF Ethan O'Donnell to Miami Marlins for CF Dane Myers. |
| 12/18/25 | Miami Marlins signed free agent LF Christopher Morel. |
| 12/16/25 | Miami Marlins signed free agent RHP Jack Ralston to a minor league contract. |
| 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 | RHP Jake Smith roster status changed by Miami Marlins. |
| 12/10/25 | RHP Jake Smith roster status changed by Miami Marlins. |
| 12/10/25 | Philadelphia Phillies purchased contract of RHP Zach McCambley in the Rule 5 Draft. |
| 12/10/25 | Miami Marlins purchased contract of RHP Livan Reinoso in the Rule 5 Draft, AAA Phase. |
| 12/10/25 | Miami Marlins purchased contract of RHP Jake Smith in the Rule 5 Draft, AAA Phase. |
| 12/10/25 | St. Louis Cardinals purchased contract of RHP Matt Pushard in the Rule 5 Draft. |
| 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. |