Portland Sea Dogs Roster & Staff
Portland Transactions
| Date | Transaction |
| 05/30/25 | Portland Sea Dogs activated RHP Jorge Juan. |
| 05/27/25 | RHP Jorge Juan assigned to Portland Sea Dogs. |
| 05/27/25 | Portland Sea Dogs placed LHP Jeremy Wu-Yelland on the 7-day injured list. |
| 05/25/25 | Portland Sea Dogs transferred SS Luis Ravelo to the Development List. |
| 05/25/25 | Portland Sea Dogs activated LHP Hayden Mullins from the 7-day injured list. |
| 05/24/25 | Portland Sea Dogs sent RHP Noah Song on a rehab assignment to Salem Red Sox. |
| 05/24/25 | RHP Tyler Uberstine assigned to Worcester Red Sox from Portland Sea Dogs. |
| 05/22/25 | Boston Red Sox sent RHP Richard Fitts on a rehab assignment to Portland Sea Dogs. |
| 05/20/25 | Portland Sea Dogs activated SS Marvin Alcantara. |
| 05/20/25 | Portland Sea Dogs activated SS Marvin Alcantara. |
| 05/20/25 | Portland Sea Dogs sent RHP Noah Song on a rehab assignment to FCL Red Sox. |
| 05/20/25 | Portland Sea Dogs sent RHP Noah Song on a rehab assignment to FCL Red Sox. |
| 05/20/25 | SS Marvin Alcantara assigned to Portland Sea Dogs from Greenville Drive. |
| 05/20/25 | RHP Isaac Coffey assigned to Portland Sea Dogs from Worcester Red Sox. |
| 05/20/25 | CF Jhostynxon Garcia assigned to Worcester Red Sox from Portland Sea Dogs. |
| 05/20/25 | OF Zach Ehrhard assigned to Portland Sea Dogs from Greenville Drive. |
| 05/18/25 | RHP Tyler Uberstine assigned to Portland Sea Dogs from Worcester Red Sox. |
| 05/15/25 | RHP Tyler Uberstine assigned to Worcester Red Sox from Portland Sea Dogs. |
| 05/13/25 | RHP Alex Hoppe assigned to Worcester Red Sox from Portland Sea Dogs. |
| 05/13/25 | RHP Wyatt Olds assigned to Worcester Red Sox from Portland Sea Dogs. |
| 05/13/25 | LHP Dalton Rogers assigned to Portland Sea Dogs from Greenville Drive. |
| 05/08/25 | LHP Jeremy Wu-Yelland assigned to Portland Sea Dogs from Greenville Drive. |
| 05/06/25 | Portland Sea Dogs activated CF Allan Castro from the 7-day injured list. |
| 05/06/25 | SS Karson Simas assigned to Worcester Red Sox from Portland Sea Dogs. |
| 05/05/25 | Portland Sea Dogs placed LHP Hayden Mullins on the 7-day injured list. |
| 05/02/25 | C Enderso Lira assigned to Worcester Red Sox from Portland Sea Dogs. |
| 05/02/25 | C Mark Kolozsvary assigned to Portland Sea Dogs from Worcester Red Sox. |
| 05/02/25 | RHP Gabriel Jackson assigned to Portland Sea Dogs from Worcester Red Sox. |