Nationals Roster & Staff
Transactions
| Date | Transaction |
| 02/11/26 | Washington Nationals placed LHP DJ Herz on the 60-day injured list. |
| 02/11/26 | Washington Nationals signed free agent RHP Miles Mikolas. |
| 02/10/26 | Washington Nationals placed RHP Trevor Williams on the 60-day injured list. |
| 02/10/26 | Washington Nationals traded RHP George Soriano to St. Louis Cardinals for RHP Andre Granillo. |
| 02/10/26 | Washington Nationals traded RHP George Soriano to St. Louis Cardinals for RHP Andre Granillo. |
| 02/09/26 | Washington Nationals invited non-roster 2B Orelvis Martinez to spring training. |
| 02/09/26 | RHP Riley Cornelio changed number to 74. |
| 02/06/26 | Boston Red Sox claimed SS Tsung-Che Cheng off waivers from Washington Nationals. |
| 02/05/26 | Washington Nationals designated RHP George Soriano for assignment. |
| 02/05/26 | Washington Nationals signed free agent RHP James Colyer to a minor league contract. |
| 02/05/26 | Washington Nationals claimed LHP Ken Waldichuk off waivers from Tampa Bay Rays. |
| 02/04/26 | Washington Nationals sent LHP Konnor Pilkington outright to Rochester Red Wings. |
| 02/04/26 | Boston Red Sox claimed 2B Mickey Gasper off waivers from Washington Nationals. |
| 02/03/26 | Washington Nationals signed free agent RHP Grant Manning to a minor league contract. |
| 02/03/26 | Washington Nationals signed free agent RHP Jacob Roberts to a minor league contract. |