Portland Sea Dogs Roster & Staff
Portland Transactions
| Date | Transaction |
| 07/11/26 | Portland Sea Dogs placed RHP Anthony Eyanson on the temporarily inactive list. |
| 07/11/26 | Portland Sea Dogs placed SS Franklin Arias on the temporarily inactive list. |
| 07/11/26 | LHP Michael Sansone assigned to Worcester Red Sox from Portland Sea Dogs. |
| 07/11/26 | LHP Hayden Mullins assigned to Portland Sea Dogs from Worcester Red Sox. |
| 07/10/26 | RHP Caleb Bolden assigned to Worcester Red Sox from Portland Sea Dogs. |
| 07/07/26 | Portland Sea Dogs activated OF Will Turner from the 7-day injured list. |
| 07/07/26 | RHP Patrick Halligan assigned to Portland Sea Dogs from Worcester Red Sox. |
| 07/07/26 | LHP Hayden Mullins assigned to Worcester Red Sox from Portland Sea Dogs. |
| 07/05/26 | Portland Sea Dogs activated RHP Caleb Bolden. |
| 07/05/26 | RHP Caleb Bolden assigned to Portland Sea Dogs from Worcester Red Sox. |
| 07/05/26 | RHP Patrick Halligan assigned to Worcester Red Sox from Portland Sea Dogs. |
| 07/04/26 | Boston Red Sox sent LHP Patrick Sandoval on a rehab assignment to Portland Sea Dogs. |
| 07/02/26 | Boston Red Sox sent 3B Nick Sogard on a rehab assignment to Portland Sea Dogs. |
| 07/02/26 | Boston Red Sox sent 3B Nick Sogard on a rehab assignment to Portland Sea Dogs. |
| 07/02/26 | RHP Caleb Bolden assigned to Worcester Red Sox from Portland Sea Dogs. |