| | LW | Placed on Injured Reserve (The Washington Capitals placed F Alex Ovechkin on injured reserve.) |
| | LW | Called up from minors (The Washington Capitals recalled F Ivan Miroshnichenko from the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Michael Sgarbossa to the minors.) |
| | C | Traded (The Pittsburgh Penguins traded F Lars Eller to the Washington Capitals.) From |
| | LW | Placed on Injured Reserve (The Washington Capitals placed F Sonny Milano on injured reserve.) |
| | D | Activated (The Washington Capitals activated D Jakob Chychrun from injured reserve.) |
| | C | Called up from minors (The Washington Capitals recalled F Michael Sgarbossa from the minors.) |
| | C | Sent to minors (The Washington Capitals sent F Michael Sgarbossa to the minors.) |
| | D | Sent to minors (The Washington Capitals sent D Vincent Iorio to the minors.) |
| | D | Activated (The Washington Capitals activated D Matt Roy from Injured Reserve.) |
| | C | Called up from minors (The Washington Capitals recalled F Michael Sgarbossa from the minors.) |
| | C | Sent to minors (The Washington Capitals sent F Michael Sgarbossa to the minors.) |
| | D | Placed on Injured Reserve (The Washington Capitals placed D Jakob Chychrun on injured reserve.) |
| | D | Called up from minors (The Washington Capitals recalled D Vincent Iorio from the minors.) |
| | C | Called up from minors (The Washington Capitals recalled F Michael Sgarbossa from the minors.) |
| | D | Placed on Injured Reserve (The Washington Capitals placed D Matt Roy on the Injured Reserve.) |
| | C | Sent to minors (The Washington Capitals sent F Brett Hyland to the minors.) |
| | C | Placed on Injured Reserve (The Washington Capitals placed F Nicklas Backstrom on injured reserve.) |
| | LW | Sent to minors (The Washington Capitals sent F Andrew Cristall to the minors.) |
| | LW | Sent to minors (The Washington Capitals sent F Ivan Miroshnichenko to the minors.) |
| | G | Sent to minors (The Washington Capitals sent G Hunter Shepard to the minors.) |
| | D | Waived (The Washington Capitals waived D Ethan Bear.) |
| | C | Waived (The Washington Capitals waived F Michael Sgarbossa.) |
| | RW | Sent to minors (The Washington Capitals assigned F Terik Parascak to the minors.) |
| | D | Sent to minors (The Washington Capitals sent D Jon McDonald to the minors.) |
| | C | Sent to minors (The Washington Capitals sent F Luke Philp to the minors.) |
| | D | Sent to minors (The Washington Capitals sent D Nick Leivermann to the minors.) |
| | RW | Sent to minors (Signed) |
| | D | Sent to minors (The Washington Capitals sent D Jake Massie to the minors.) |
| | RW | Sent to minors (The Washington Capitals sent F Spencer Smallman to the minors.) |
| | D | Sent to minors (The Washington Capitals sent D Logan Day to the minors.) |
| | RW | Sent to minors (The Washington Capitals sent F Henrik Rybinski to the minors.) |
| | RW | Sent to minors (The Washington Capitals sent F Zac Funk to the minors.) |
| | G | Sent to minors (The Washington Capitals sent G Mitchell Gibson to the minors.) |
| | G | Sent to minors (The Washington Capitals sent G Clay Stevenson to the minors.) |
| | LW | Sent to minors (The Washington Capitals sent F Alexander Suzdalev the minors.) |
| | LW | Sent to minors (The Washington Capitals sent F Ilya Protas to the minors.) |
| | RW | Sent to minors (The Washington Capitals sent F Pierrick Dube to the minors.) |
| | D | Sent to minors (The Washington Capitals sent D Vincent Iorio to the minors.) |
| | C | Waived (The Washington Capitals waived F Alex Limoges.) |
| | D | Waived (The Washington Capitals waived D Chase Priskie.) |
| | D | Waived (The Washington Capitals waived D Hardy Haman Aktell.) |
| | C | Waived (The Washington Capitals waived F Ethen Frank.) |
| | RW | Waived (The Washington Capitals waived F Riley Sutter.) |
| | LW | Signed (The Washington Capitals signed F Eriks Mateiko to a three-year entry-level contract.) |
| | LW | Sent to minors (The Washington Capitals sent F Tyler Weiss to the minors.) |
| | C | Sent to minors (The Washington Capitals sent F Grant Cruikshank to the minors.) |
| | G | Released (The Washington Capitals released G Seth Eisele.) |
| | D | Sent to minors (The Washington Capitals assigned D Leon Muggli to the minors.) |
| | D | Released (The Washington Capitals released D Ayodele Adeniye.) |
| | LW | Sent to minors (The Washington Capitals sent F Justin Nachbaur to the minors.) |
| | LW | Sent to minors (The Washington Capitals sent F Garrett Roe to the minors.) |
| | D | Sent to minors (The Washington Capitals assigned D Cameron Allen to the minors.) |
| | D | Sent to minors (The Washington Capitals sent D Hudson Thornton to the minors.) |
| | C | Sent to minors (The Washington Capitals sent F Brennan Saulnier to the minors.) |
| | D | Sent to minors (The Washington Capitals sent D Brad Hunt to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Patrick Thomas to the minors.) |
| | G | Sent to minors (The Washington Capitals assigned G Garin Bjorklund to the minors.) |
| | C | Released (The Washington Capitals released F Oasiz Wiesblatt.) |
| | LW | Sent to minors (The Washington Capitals sent F Matthew Strome to the minors.) |
| | LW | Sent to minors (The Washington Capitals assigned F Eriks Mateiko to the minors.) |
| | D | Sent to minors (The Washington Capitals sent D Jayden Lee to the minors.) |
| | D | Sent to minors (The Washington Capitals sent D Dmitry Osipov to the minors.) |
| | C | Sent to minors (The Washington Capitals assigned F Ryan Hofer to the minors.) |
| | D | Sent to minors (The Washington Capitals sent D Aaron Ness to the minors.) |
| | RW | Placed on Injured Reserve (The Washington Capitals placed F T.J. Oshie on injured reserve.) |
| | LW | Signed (The Washington Capitals signed F Justin Nachbaur.) |
| | D | Signed (The Washington Capitals signed D Brad Hunt.) |
| | D | Signed (The Washington Capitals signed D Aaron Ness.) |
| | D | Signed (The Washington Capitals signed D Logan Day.) |
| | LW | Signed (The Washington Capitals signed F Jakub Vrana to a professional tryout.) |
| | C | Activated (The Washington Capitals activated F Nicklas Backstrom.) |
| | D | Signed (The Washington Capitals Signed D Leon Muggli to an entry-level contract.) |
| | D | Signed (The Washington Capitals signed D Cameron Allen to a standard contract.) |
| | RW | Signed (The Washington Capitals signed F Terik Parascak to an entry-level contract.) |
| | D | Re-Signed (The Washington Capitals re-signed D Hardy Haman Aktell.) |
| | C | Re-Signed (The Washington Capitals re-signed F Alex Limoges to a one-year, two-way contract.) |
| | C | Signed (The Washington Capitals signed F Luke Philp to a two-way contract.) |
| | RW | Signed (The Washington Capitals signed F Brandon Duhaime to a standard contract.) |
| | D | Signed (The Washington Capitals traded D Nick Jensen to the Ottawa Senators.) To |
| | C | Signed (The Washington Capitals signed F Ethen Frank.) |
| | G | Signed (The Washington Capitals signed G Mitchell Gibson to a two-way contract.) |
| | D | Traded (The Ottawa Senators traded D Jakob Chychrun to the Washington Capitals.) From |
| | D | Signed (The Washington Capitals signed D Chase Priskie to a two-way contract.) |
| | RW | Signed (The Washington Capitals signed F Taylor Raddysh to a standard contract.) |
| | D | Signed (The Washington Capitals signed D Matt Roy to a standard contract.) |
| | RW | Became Unrestricted Free Agent (F Nicolas Aube-Kubel elected free agency.) |
| | C | Became Unrestricted Free Agent (F Joe Snively elected free agency.) |
| | LW | Traded (The Washington Capitals traded F Beck Malestyn to the Buffalo Sabres) To |
| | C | Drafted (The Washington Capitals drafted F Petr Sikora.) |
| | G | Traded (The Vegas Golden Knights traded G Logan Thompson to the Washington Capitals) From |
| | D | Drafted (The Washington Capitals drafted D Leon Muggli) |
| | LW | Drafted (The Washington Capitals drafted LW Eriks Mateiko) |
| | LW | Drafted (The Washington Capitals drafted LW Ilya Protas) |
| | G | Drafted (The Washington Capitals drafted G Nicholas Kempf) |
| | C | Drafted (The Washington Capitals drafted F Miroslav Satan.) |
| | D | Drafted (The Washington Capitals drafted D Cole Hutson) |
| | LW | Became Unrestricted Free Agent (F Max Pacioretty elected free agency.) |
| | D | Became Unrestricted Free Agent (D Chase Priskie elected free agency.) |
| | RW | Drafted (The Washington Capitals drafted F Terik Parascak.) |
| | LW | Traded (The Calgary Flames traded F Andrew Mangiapane to the Washington Capitals.) From |
| | C | Traded (The Los Angeles Kings traded F Pierre-Luc Dubois to the Washington Capitals.) From |
| | G | Traded (The Washington Capitals traded G Darcy Kuemper to the Los Angeles Kings.) To |
| | D | Activated (The Washington Capitals activated D Ethan Bear.) |
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