Red Sox Roster & Staff
Transactions
| Date | Transaction |
| 02/21/26 | RHP Cooper Adams assigned to Boston Red Sox. |
| 02/21/26 | LHP P.J. Labriola assigned to Boston Red Sox. |
| 02/21/26 | RHP Patrick Halligan assigned to Boston Red Sox. |
| 02/21/26 | CF Skylar King assigned to Boston Red Sox. |
| 02/21/26 | SS Mason White assigned to Boston Red Sox. |
| 02/20/26 | OF Caden Rose assigned to Boston Red Sox. |
| 02/20/26 | RHP Reidis Sena assigned to Boston Red Sox. |
| 02/20/26 | RF Corey Rosier assigned to Boston Red Sox. |
| 02/20/26 | RHP Max Carlson assigned to Boston Red Sox. |
| 02/20/26 | 3B Jack Winnay assigned to Boston Red Sox. |
| 02/20/26 | CF Phillip Sikes assigned to Boston Red Sox. |
| 02/20/26 | C Juan Montero assigned to Boston Red Sox. |
| 02/20/26 | LHP Michael Sansone assigned to Boston Red Sox. |
| 02/20/26 | RHP Jack Anderson assigned to Boston Red Sox. |
| 02/20/26 | RHP Jay Allmer assigned to Boston Red Sox. |
| 02/20/26 | SS Marvin Alcantara assigned to Boston Red Sox. |
| 02/20/26 | 3B Nazzan Zanetello assigned to Boston Red Sox. |
| 02/16/26 | Boston Red Sox signed free agent RHP Ranfi Vargas to a minor league contract. |
| 02/13/26 | Boston Red Sox signed free agent RHP Jesus Lopez to a minor league contract. |
| 02/12/26 | Boston Red Sox signed free agent RHP Harry Blum to a minor league contract. |
| 02/10/26 | Boston Red Sox placed RHP Tanner Houck on the 60-day injured list. |
| 02/10/26 | Boston Red Sox signed free agent SS Isiah Kiner-Falefa. |
| 02/09/26 | Boston Red Sox signed free agent 2B Brendan Rodgers to a minor league contract and invited him to spring training. |
| 02/09/26 | Boston Red Sox traded LHP Kyle Harrison, LHP Shane Drohan and 2B David Hamilton to Milwaukee Brewers for 3B Caleb Durbin, SS Andruw Monasterio, 2B Anthony Seigler and Future Considerations. |
| 02/09/26 | Boston Red Sox traded LHP Kyle Harrison, LHP Shane Drohan and 2B David Hamilton to Milwaukee Brewers for 3B Caleb Durbin, SS Andruw Monasterio, 2B Anthony Seigler and Future Considerations. |
| 02/09/26 | Boston Red Sox traded LHP Kyle Harrison, LHP Shane Drohan and 2B David Hamilton to Milwaukee Brewers for 3B Caleb Durbin, SS Andruw Monasterio, 2B Anthony Seigler and Future Considerations. |
| 02/09/26 | Boston Red Sox traded LHP Kyle Harrison, LHP Shane Drohan and 2B David Hamilton to Milwaukee Brewers for 3B Caleb Durbin, SS Andruw Monasterio, 2B Anthony Seigler and Future Considerations. |
| 02/09/26 | Boston Red Sox traded LHP Kyle Harrison, LHP Shane Drohan and 2B David Hamilton to Milwaukee Brewers for 3B Caleb Durbin, SS Andruw Monasterio, 2B Anthony Seigler and Future Considerations. |
| 02/09/26 | Boston Red Sox traded LHP Kyle Harrison, LHP Shane Drohan and 2B David Hamilton to Milwaukee Brewers for 3B Caleb Durbin, SS Andruw Monasterio, 2B Anthony Seigler and Future Considerations. |
| 02/06/26 | Boston Red Sox signed free agent LHP Radinsson Lopez to a minor league contract. |
| 02/06/26 | Boston Red Sox claimed SS Tsung-Che Cheng off waivers from Washington Nationals. |
| 02/05/26 | Boston Red Sox signed free agent RHP Kyle Keller to a minor league contract. |
| 02/05/26 | RHP Kyle Keller roster status changed by Boston Red Sox. |
| 02/05/26 | Boston Red Sox signed free agent RHP Vinny Nittoli to a minor league contract. |
| 02/04/26 | Boston Red Sox claimed 2B Mickey Gasper off waivers from Washington Nationals. |
| 02/03/26 | Boston Red Sox signed free agent C Matt Thaiss to a minor league contract. |
| 02/01/26 | Boston Red Sox traded RHP David Sandlin, RHP Jordan Hicks, Player To Be Named Later, Player To Be Named Later and cash to Chicago White Sox for RHP Gage Ziehl and Player To Be Named Later. |
| 02/01/26 | Boston Red Sox traded RHP David Sandlin, RHP Jordan Hicks, Player To Be Named Later, Player To Be Named Later and cash to Chicago White Sox for RHP Gage Ziehl and Player To Be Named Later. |
| 02/01/26 | Boston Red Sox traded RHP David Sandlin, RHP Jordan Hicks, Player To Be Named Later, Player To Be Named Later and cash to Chicago White Sox for RHP Gage Ziehl and Player To Be Named Later. |