| | RW | Activated (The Washington Capitals activated F T.J. Oshie from Injured Reserve.) |
| | C | Sent to minors (The Washington Capitals sent F Hendrix Lapierre to the minors.) |
| | G | Sent to minors (The Washington Capitals assigned G Hunter Shepard to the minors.) |
| | G | Called up from minors (The Washington Capitals recalled G Hunter Shepard from the minors.) |
| | RW | Placed on Injured Reserve (The Washington Capitals placed F T.J. Oshie on Injured Reserve.) |
| | D | Activated (The Washington Capitals activated D Martin Fehervary.) |
| | D | Activated (The Washington Capitals activated D Joel Edmundson from Injured Reserve.) |
| | D | Sent to minors (The Washington Capitals sent D Dylan McIlrath to the minors.) |
| | RW | Activated (The Washington Capitals activated F Anthony Mantha from the injured reserve.) |
| | D | Activated (The Washington Capitals activated D Trevor van Riemsdyk from the injured reserve.) |
| | D | Sent to minors (The Washington Capitals assigned D Hardy Haman Aktell to the minors.) |
| | G | Sent to minors (The Washington Capitals assigned G Hunter Shepard to the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Dylan McIlrath from the minors.) |
| | D | Placed on Injured Reserve (The Washington Capitals placed D Martin Fehervary on injured reserve.) |
| | RW | Placed on Injured Reserve (The Washington Capitals placed F Anthony Mantha on Injured Reserve.) |
| | RW | Called up from minors (The Washington Capitals recalled F Nicolas Aube-Kubel from the minors.) |
| | G | Called up from minors (The Washington Capitals recalled G Hunter Shepard from the minors.) |
| | C | Activated (The Washington Capitals activated F Nic Dowd off injured reserve.) |
| | C | Loaned to Non-League Team (The Washington Capitals loaned F Michael Sgarbossa to the Hershey Bears of the AHL.) |
| | D | Placed on Injured Reserve (The Washington Capitals placed D Trevor van Riemsdyk on the Injured Reserve.) |
| | C | Placed on Injured Reserve (The Washington Capitals placed F Nicklas Backstrom on IR.) |
| | C | Called up from minors (The Washington Capitals recalled F Michael Sgarbossa.) |
| | C | Not With Team (F Nicklas Backstrom announced that he's stepping away from the team to address health concerns.) |
| | C | Called up from minors (The Washington Capitals recalled F Hendrix Lapierre.) |
| | C | Placed on Injured Reserve (The Washington Capitals placed F Nic Dowd on injured reserve.) |
| | G | Activated (The Washington Capitals activated G Charlie Lindgren from injured reserve. ) |
| | G | Sent to minors (The Washington Capitals assigned G Hunter Shepard to the minors. ) |
| | G | Called up from minors (The Washington Capitals recalled G Hunter Shepard.) |
| | G | Sent to minors (The Washington Capitals assigned G Clay Stevenson to the minors.) |
| | G | Placed on Injured Reserve (The Washington Capitals placed G Charlie Lindgren on Injured Reserve. ) |
| | D | Called up from minors (The Washington Capitals recalled D Hardy Haman Aktell from the minors. ) |
| | G | Called up from minors (The Washington Capitals recalled G Clay Stevenson from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Aliaksei Protas from the minors.) |
| | G | Sent to minors (The Washington Capitals sent G Clay Stevenson to the minors.) |
| | G | Called up from minors (The Washington Capitals recalled G Clay Stevenson from the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Aliaksei Protas to the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Connor McMichael.) |
| | LW | Sent to minors (The Washington Capitals assigned F Ivan Miroshnichenko to the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Aliaksei Protas.) |
| | RW | Sent to minors (The Washington Capitals assigned F Riley Sutter to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Hardy Haman Aktell to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Connor McMichael to the minors.) |
| | LW | Placed on Injured Reserve (The Washington Capitals placed F Max Pacioretty on injured reserve.) |
| | C | Sent to minors (The Washington Capitals assigned F Aliaksei Protas to the minors.) |
| | D | Placed on Injured Reserve (The Washington Capitals placed D Joel Edmundson on injured reserve.) |
| | RW | Called up from minors (The Washington Capitals recalled F Riley Sutter.) |
| | G | Sent to minors (The Washington Capitals sent G Mitchell Gibson to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Hendrix Lapierre to the minors.) |
| | RW | Sent to minors (The Washington Capitals assigned F Nicolas Aube-Kubel to the minors.) |
| | G | Called up from minors (The Washington Capitals recalled G Mitchell Gibson from the minors.) |
| | G | Sent to minors (The Washington Capitals assigned G Clay Stevenson to the minors.) |
| | G | Sent to minors (The Washington Capitals assigned G Hunter Shepard to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Joe Snively to the minors.) |
| | RW | Sent to minors (The Washington Capitals assigned F Riley Sutter to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Chase Priskie to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Dylan McIlrath to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Michael Sgarbossa to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Vincent Iorio to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Alex Limoges to the minors.) |
| | RW | Called up from minors (The Washington Capitals recalled F Riley Sutter.) |
| | D | Called up from minors (The Washington Capitals recalled D Chase Priskie.) |
| | D | Sent to minors (The Washington Capitals assigned D Jon McDonald to the minors.) |
| | RW | Sent to minors (The Washington Capitals assigned F Henrik Rybinski to the minors.) |
| | G | Sent to minors (The Washington Capitals assigned G Reid Cooper to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Nick Leivermann to the minors.) |
| | LW | Sent to minors (The Washington Capitals assigned F Alexander Suzdalev to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Aaron Ness to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Logan Day to the minors.) |
| | LW | Sent to minors (The Washington Capitals assigned F Bogdan Trineyev to the minors.) |
| | RW | Sent to minors (The Washington Capitals assigned F Pierrick Dube to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Ryan Hofer to the minors.) |
| | G | Sent to minors (The Washington Capitals assigned G Garlin Bjorklund to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Chase Priskie to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Ethen Frank to the minors.) |
| | G | Sent to minors (The Washington Capitals assigned G Mitchell Gibson to the minors.) |
| | RW | Sent to minors (The Washington Capitals assigned F Riley Sutter to the minors.) |
| | LW | Sent to minors (The Washington Capitals assigned F Andrew Cristall to the minors.) |
| | LW | Sent to minors (The Washington Capitals assigned F Garrett Roe to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Brett Hyland to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Mike Vecchione to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Jimmy Huntington to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Colin Swoyer to the minors.) |
| | RW | Sent to minors (The Washington Capitals assigned F Julian Napravnik to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Benton Maass to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Patrick Thomas to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Jake Karabela to the minors.) |
| | LW | Sent to minors (The Washington Capitals assigned F Matthew Strome to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Michael Kim to the minors.) |
| | G | Sent to minors (The Washington Capitals assigned G Antoine Keller to the minors.) |
| | LW | Called up from minors (The Washington Capitals recalled F Alexander Suzdalev from the minors.) |
| | G | Called up from minors (The Washington Capitals recalled G Clay Stevenson from the minors.) |
| | G | Called up from minors (The Washington Capitals recalled G Mitchell Gibson from the minors.) |
| | RW | Called up from minors (The Washington Capitals recalled F Pierrick Dube from the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Vincent Iorio from the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Logan Day from the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Benton Maass from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Ethen Frank from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Connor McMichael from the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Aaron Ness from the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Jon McDonald from the minors.) |
| | RW | Called up from minors (The Washington Capitals recalled F Julian Napravnik from the minors.) |
| | LW | Called up from minors (The Washington Capitals recalled F Bogdan Trineyev from the minors.) |
| | RW | Called up from minors (The Washington Capitals recalled F Riley Sutter from the minors.) |
| | RW | Called up from minors (The Washington Capitals recalled F Henrik Rybinski from the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Michael Kim from the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Dylan McIlrath from the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Nick Leivermann from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Hendrix Lapierre from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Jimmy Huntington from the minors.) |
| | LW | Called up from minors (The Washington Capitals recalled F Beck Malenstyn from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Jake Karabela from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Joe Snively from the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Colin Swoyer from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Michael Sgarbossa from the minors.) |
| | LW | Called up from minors (The Washington Capitals recalled F Matthew Strome from the minors.) |
| | LW | Called up from minors (The Washington Capitals recalled F Ivan Miroshnichenko from the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Cameron Allen to the minors.) |
| | G | Called up from minors (The Washington Capitals recalled G Garin Bjorklund from the minors.) |
| | D | Called up from minors (The Washington Capitals recalled D Lucas Johansen from the minors.) |
| | RW | Sent to minors (The Washington Capitals assigned F Ryan Leonard to the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Mike Vecchione from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Aliaksei Protas from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Ryan Hofer from the minors.) |
| | D | Signed (The Washington Capitals signed D Chase Priskie to a two-way contract.) |
| | C | Signed (The Washington Capitals signed F Alex Limoges.) |
| | C | Signed (The Washington Capitals signed F Matthew Phillips.) |
| | D | Traded (The Montreal Canadiens signed D Joel Edmundson to the Washington Capitals.) From |
| | LW | Signed (The Washington Capitals signed F Max Pacioretty.) |
| | G | Signed (The Washington Capitals signed G Hunter Shepard.) |
| | C | Became Unrestricted Free Agent (F Craig Smith elected free agency.) |
| | D | Became Unrestricted Free Agent (D Matt Irwin elected free agency.) |
| | RW | Became Unrestricted Free Agent (F Connor Brown elected free agency.) |
| | LW | Became Unrestricted Free Agent (F Conor Sheary elected free agency.) |
| | LW | Became Unrestricted Free Agent (F Carl Hagelin elected free agency.) |
| | C | Drafted (The Washington Capitals drafted F Brett Hyland.) |
| | D | Drafted (The Washington Capitals drafted D Cameron Allen.) |
| | C | Drafted (The Washington Capitals drafted F Patrick Thomas.) |
| | LW | Drafted (The Washington Capitals drafted LW Andrew Cristall.) |
| | G | Drafted (The Washington Capitals drafted G Antoine Keller.) |
| | RW | Drafted (The Washington Capitals drafted F Ryan Leonard.) |