Harrisburg Senators Roster & Staff
WSH Transactions
| Date | Transaction |
| 06/07/26 | Washington Nationals optioned RHP Cole Henry to Rochester Red Wings. |
| 06/07/26 | Washington Nationals recalled RHP Riley Cornelio from Rochester Red Wings. |
| 06/07/26 | Washington Nationals optioned RHP Cole Henry to Rochester Red Wings. |
| 06/06/26 | DSL Nationals activated RHP Darling Reyes. |
| 06/06/26 | Harrisburg Senators sent RHP Eriq Swan on a rehab assignment to FCL Nationals. |
| 06/06/26 | Wilmington Blue Rocks sent RHP Travis Sthele on a rehab assignment to FCL Nationals. |
| 06/06/26 | Harrisburg Senators sent RHP Eriq Swan on a rehab assignment to FCL Nationals. |
| 06/06/26 | Wilmington Blue Rocks sent RHP Travis Sthele on a rehab assignment to FCL Nationals. |
| 06/06/26 | Wilmington Blue Rocks activated RHP Mikey Tepper from the 7-day injured list. |
| 06/06/26 | Wilmington Blue Rocks released 2B Gavin Dugas. |
| 06/05/26 | Washington Nationals sent LHP DJ Herz on a rehab assignment to FCL Nationals. |
| 06/05/26 | RHP Ike Buxton assigned to FCL Nationals. |
| 06/05/26 | Harrisburg Senators released LF Jack Rogers. |
| 06/05/26 | Washington Nationals signed free agent RHP Ike Buxton to a minor league contract. |
| 06/03/26 | RHP Darling Reyes assigned to DSL Nationals. |
| 06/03/26 | RHP Sam Brodersen assigned to FCL Nationals. |
| 06/03/26 | Fredericksburg Nationals placed LHP Bryant Olson on the full-season injured list. |
| 06/03/26 | RHP Austin Amaral assigned to Fredericksburg Nationals from Wilmington Blue Rocks. |
| 06/03/26 | Harrisburg Senators placed RHP Dylan Tebrake on the 60-day injured list. |
| 06/03/26 | Rochester Red Wings transferred CF Levi Jordan from the 7-day injured list to the 60-day injured list. |
| 06/03/26 | RHP Austin Amaral assigned to Fredericksburg Nationals from Wilmington Blue Rocks. |
| 06/03/26 | Washington Nationals signed free agent RHP Darling Reyes to a minor league contract. |
| 06/03/26 | Washington Nationals signed free agent RHP Sam Brodersen to a minor league contract. |
| 06/02/26 | RHP Marlon De La Cruz assigned to Fredericksburg Nationals from FCL Nationals. |
| 06/02/26 | RHP Marlon De La Cruz assigned to Fredericksburg Nationals from FCL Nationals. |
| 06/02/26 | RHP Miguel Sime Jr. assigned to Wilmington Blue Rocks from Fredericksburg Nationals. |
| 06/02/26 | RHP Miguel Sime Jr. assigned to Wilmington Blue Rocks from Fredericksburg Nationals. |