Transactions
| Date | Player | Pos | Transactions |
| 1/15 | Matthew Peca | RW | Sent to minors Laval-AHL |
| 1/8 | Lukas Vejdemo | C | Sent to minors Laval-AHL |
| 1/7 | Laurent Dauphin | C | Traded for Michael McCarron |
| 1/6 | Christian Folin | D | Sent to minors Laval-AHL |
| 1/5 | Christian Folin | D | Waived |
| 1/3 | Ilya Kovalchuk | LW | Signed as Free Agent One-year contract |
| 1/3 | Andrew Sturtz | RW | Traded w/ 2021 5th-rd pick for Mike Reilly |
| 1/3 | Marco Scandella | D | Traded for 2020 4th-rd pick |
| 1/2 | Riley Barber | RW | Sent to minors Laval-AHL |
| 1/1 | Dale Weise | RW | Called up from minors from Laval-AHL |
| 12/31 | Brendan Gallagher | RW | Placed on IR Concussion - left game |
| 12/27 | Joel Armia | RW | Placed on IR Upper-body injury |
| 12/15 | Lukas Vejdemo | C | Called up from minors from Laval-AHL |
| 12/15 | Otto Leskinen | D | Sent to minors Laval-AHL |
| 12/14 | Charlie Lindgren | G | Called up from minors from Laval-AHL |
| 12/14 | Cayden Primeau | G | Sent to minors Laval-AHL |
| 12/13 | Ryan Poehling | C | Called up from minors from Laval-AHL |
| 12/12 | Ryan Poehling | C | Sent to minors Laval-AHL |
| 12/12 | David Sklenicka | D | Signed with European team Jokerit Helsinki-KHL |
| 12/11 | Christian Folin | D | Called up from minors from Laval-AHL |
| 12/11 | Ryan Poehling | C | Called up from minors from Laval-AHL |
| 12/10 | Matthew Peca | RW | Placed on IR Leg - left game |
| 12/8 | Riley Barber | RW | Called up from minors from Laval-AHL |
| 12/7 | Charles Hudon | LW | Sent to minors Laval-AHL |
| 12/6 | David Sklenicka | D | Waived For purpose of being released |
| 12/5 | Jesperi Kotkaniemi | C | Placed on IR Concussion - left game |
| 12/4 | Otto Leskinen | D | Called up from minors from Laval-AHL |
| 12/4 | Gustav Olofsson | D | Sent to minors Laval-AHL |
| 12/3 | Keith Kinkaid | G | Sent to minors Laval-AHL |
| 12/2 | Matthew Peca | C | Called up from minors from Laval-AHL |
| 12/2 | Cayden Primeau | G | Called up from minors from Laval-AHL |
| 12/2 | Keith Kinkaid | G | Waived |
| 11/30 | Victor Mete | D | Placed on IR Ankle - left game |
| 11/29 | Gustav Olofsson | D | Called up from minors from Laval-AHL |
| 11/27 | Christian Folin | D | Sent to minors Laval-AHL for conditioning stint |
| 11/25 | Charles Hudon | LW | Called up from minors from Laval-AHL |
| 11/24 | Charles Hudon | LW | Sent to minors Laval-AHL |
| 11/22 | Charles Hudon | LW | Called up from minors from Laval-AHL |
| 11/21 | Charles Hudon | LW | Sent to minors Laval-AHL |
| 11/17 | Charles Hudon | LW | Called up from minors from Laval-AHL |
| 11/17 | Charles Hudon | LW | Sent to minors Laval-AHL |
| 11/16 | Charles Hudon | LW | Called up from minors from Laval-AHL |
| 11/16 | Jonathan Drouin | LW | Placed on IR Wrist |
| 11/16 | Paul Byron | RW | Placed on IR Knee |
| 11/12 | Ryan Poehling | C | Sent to minors Laval-AHL |
| 11/3 | Ryan Poehling | C | Called up from minors from Laval-AHL |
| 10/11 | Noah Juulsen | D | Sent to minors Laval-AHL |
| 10/10 | Michael McCarron | C | Sent to minors Laval-AHL |
| 10/9 | Michael McCarron | C | Waived |
| 10/4 | Gustav Olofsson | D | Sent to minors Laval-AHL |
| 10/3 | Gustav Olofsson | D | Waived |
| 10/1 | Ryan Poehling | C | Sent to minors Laval-AHL |
| 10/1 | Kevin Lynch | C | Signed as Free Agent Minors contract - Laval-AHL |
| 10/1 | Gustav Olofsson | D | Placed on IR Upper-body injury |
| 9/30 | Charles Hudon | LW | Sent to minors Laval-AHL |
| 9/30 | Charlie Lindgren | G | Sent to minors Laval-AHL |
| 9/29 | Charles Hudon | LW | Waived |
| 9/29 | Charlie Lindgren | G | Waived |
| 9/27 | Matthew Peca | C | Sent to minors Laval-AHL |
| 9/27 | Phil Varone | LW | Sent to minors Laval-AHL |
| 9/27 | Dale Weise | RW | Sent to minors Laval-AHL |
| 9/27 | Xavier Ouellet | D | Sent to minors Laval-AHL |
| 9/27 | Karl Alzner | D | Sent to minors Laval-AHL |
| 9/26 | Matthew Peca | C | Waived |
| 9/26 | Phil Varone | LW | Waived |
| 9/26 | Dale Weise | RW | Waived |
| 9/26 | Xavier Ouellet | D | Waived |
| 9/26 | Karl Alzner | D | Waived |
| 9/24 | Riley Barber | RW | Sent to minors Laval-AHL |
| 9/23 | Alex Belzile | RW | Sent to minors Laval-AHL |
| 9/23 | Jake Evans | C | Sent to minors Laval-AHL |
| 9/23 | Josh Brook | D | Sent to minors Laval-AHL |
| 9/23 | Riley Barber | RW | Waived |
| 9/22 | Otto Leskinen | D | Sent to minors Laval-AHL |
| 9/22 | Cayden Primeau | G | Sent to minors Laval-AHL |
| 9/21 | Morgan Adams-Moisan | RW | Sent to minors Laval-AHL |
| 9/21 | Connor LaCouvee | G | Sent to minors Laval-AHL |
| 9/21 | Ryan Culkin | D | Sent to minors Laval-AHL |
| 9/21 | David Sklenicka | D | Sent to minors Laval-AHL |
| 9/21 | William Pelletier | LW | Sent to minors Laval-AHL |
| 9/21 | Nikita Jevpalovs | RW | Sent to minors Laval-AHL |
| 9/21 | Lukas Vejdemo | C | Sent to minors Laval-AHL |
| 9/21 | Antoine Waked | RW | Sent to minors Laval-AHL |
| 9/21 | Michael Pezzetta | LW | Sent to minors Laval-AHL |
| 9/21 | Alexandre Alain | C | Sent to minors Laval-AHL |
| 9/21 | Hayden Verbeek | C | Sent to minors Laval-AHL |
| 9/21 | Michael McNiven | G | Sent to minors Laval-AHL |
| 9/21 | Maxim Lamarche | D | Sent to minors Laval-AHL |
| 9/21 | Joe Cox | RW | Sent to minors Laval-AHL |
| 9/18 | Gianni Fairbrother | D | Assigned to Junior Club Everett-WHL |
| 9/17 | Michael McCarron | C | Placed on IR Groin |
| 9/17 | Noah Juulsen | D | Placed on IR Head |
| 9/16 | Liam Hawel | C | Released |
| 9/13 | Joel Teasdale | LW | Placed on IR Torn right ACL, MCL |
| 9/10 | Morgan Adams-Moisan | RW | Invited to Training Camp |
| 9/10 | Connor LaCouvee | G | Invited to Training Camp |
| 9/10 | Maxim Lamarche | D | Invited to Training Camp |
| 9/10 | Ryan Culkin | D | Invited to Training Camp |
| 9/10 | William Pelletier | LW | Invited to Training Camp |
| 9/10 | Joe Cox | RW | Invited to Training Camp |
| 9/10 | Liam Hawel | C | Invited to Training Camp |
| 9/10 | Nikita Jevpalovs | RW | Invited to Training Camp |
| 8/26 | Etienne Marcoux | G | Signed with European team Thetford Mines Assurancia-LNAH |
| 7/27 | Michael McCarron | C | Re-Signed One-year contract |
| 7/22 | Tomas Plekanec | C | Signed with European team HC Kometa Brno-Czech Republic |
| 7/19 | Charles Hudon | LW | Re-Signed One-year contract |
| 7/11 | Joel Armia | RW | Re-Signed Two-year contract |
| 7/11 | Artturi Lehkonen | LW | Re-Signed Two-year contract |
| 7/5 | Nick Cousins | C | Signed as Free Agent One-year contract |
| 7/4 | Ben Chiarot | D | Signed as Free Agent Three-year contract |
| 7/3 | Phil Varone | LW | Signed as Free Agent One-year contract |
| 7/1 | Brett Lernout | D | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Antti Niemi | G | Became Unrestricted Free Agent |
| 7/1 | Jordie Benn | D | Became Unrestricted Free Agent |
| 7/1 | Hunter Shinkaruk | C | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Daniel Audette | C | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Maxim Lamarche | D | Signed as Free Agent Minors contract - Laval-AHL |
| 7/1 | Riley Barber | RW | Signed as Free Agent One-year contract |
| 7/1 | Keith Kinkaid | G | Signed as Free Agent One-year contract |
| 7/1 | Sebastian Aho | C | Signed to an offer sheet Five-year offer sheet |
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