Portland Sea Dogs Roster & Staff
Portland Transactions
| Date | Transaction |
| 06/16/26 | Portland Sea Dogs activated LHP Jeremy Wu-Yelland from the 7-day injured list. |
| 06/16/26 | Portland Sea Dogs activated LHP Jeremy Wu-Yelland from the 7-day injured list. |
| 06/16/26 | Boston Red Sox sent 1B Romy Gonzalez on a rehab assignment to Portland Sea Dogs. |
| 06/14/26 | LHP Michael Sansone assigned to Portland Sea Dogs from Worcester Red Sox. |
| 06/13/26 | Portland Sea Dogs placed OF Caden Rose on the 7-day injured list. |
| 06/13/26 | OF Stanley Tucker assigned to Portland Sea Dogs from Salem RidgeYaks. |
| 06/11/26 | Portland Sea Dogs released RHP Chih-Jung Liu. |
| 06/11/26 | Portland Sea Dogs released RHP Jorge Juan. |
| 06/07/26 | LHP Michael Sansone assigned to Worcester Red Sox from Portland Sea Dogs. |
| 06/06/26 | Portland Sea Dogs sent LHP Jeremy Wu-Yelland on a rehab assignment to FCL Red Sox. |
| 06/04/26 | 2B Tyler McDonough assigned to Worcester Red Sox from Portland Sea Dogs. |
| 06/02/26 | LHP Michael Sansone assigned to Portland Sea Dogs from Worcester Red Sox. |
| 06/02/26 | RHP Joe Vogatsky assigned to Greenville Drive from Portland Sea Dogs. |