Portland Sea Dogs Roster & Staff
Portland Transactions
| Date | Transaction |
| 08/04/26 | Portland Sea Dogs activated OF Caden Rose from the Development List. |
| 08/04/26 | Portland Sea Dogs activated LHP Devin Futrell. |
| 08/04/26 | RHP Gage Ziehl assigned to Worcester Red Sox from Portland Sea Dogs. |
| 08/04/26 | LHP Devin Futrell assigned to Portland Sea Dogs from Greenville Drive. |
| 08/01/26 | Portland Sea Dogs activated SS Yoeilin Cespedes. |
| 08/01/26 | Portland Sea Dogs placed LHP Erik Rivera on the 7-day injured list retroactive to July 30, 2026. |
| 08/01/26 | SS Yoeilin Cespedes assigned to Portland Sea Dogs from Greenville Drive. |