Transactions
| Date | Player | Pos | Transactions |
| 4/30 | Justus Annunen | G | Signed Three-year, entry-level contract |
| 3/27 | Jacob MacDonald | D | Contract extended Two-year, two-way contract extension |
| 3/26 | T.J. Tynan | RW | Contract extended One-year, two-way contract extension |
| 3/16 | Logan O'Connor | RW | Sent to minors Colorado-AHL |
| 3/12 | Martin Kaut | RW | Sent to minors Colorado-AHL |
| 3/11 | Martin Kaut | RW | Called up from minors from Colorado-AHL |
| 3/10 | Martin Kaut | RW | Sent to minors Colorado-AHL |
| 3/10 | Sheldon Dries | C | Sent to minors Colorado-AHL |
| 3/9 | Martin Kaut | RW | Called up from minors from Colorado-AHL |
| 3/5 | Sheldon Dries | C | Called up from minors from Colroado-AHL |
| 3/5 | Kevin Connauton | D | Called up from minors from Colorado-AHL |
| 3/5 | Martin Kaut | RW | Sent to minors Colorado-AHL |
| 2/29 | Logan O'Connor | RW | Called up from minors Colorado-AHL |
| 2/28 | Logan O'Connor | RW | Sent to minors Colorado-AHL |
| 2/24 | Martin Kaut | RW | Called up from minors from Colorado-AHL |
| 2/24 | Logan O'Connor | RW | Called up from minors from Colorado-AHL |
| 2/24 | Logan O'Connor | RW | Sent to minors Colorado-AHL |
| 2/24 | Hunter Miska | G | Sent to minors Colorado-AHL |
| 2/24 | Martin Kaut | RW | Sent to minors Colorado-AHL |
| 2/24 | Vladislav Namestnikov | LW | Traded for '21 4th-rd pick |
| 2/24 | Michael Hutchinson | G | Traded for Calle Rosen |
| 2/23 | Sheldon Dries | C | Sent to minors Colorado-AHL |
| 2/22 | Logan O'Connor | RW | Called up from minors from Colorado-AHL |
| 2/21 | Pavel Francouz | G | Contract extended Two-year contract extension |
| 2/20 | Sheldon Dries | C | Called up from minors from Colorado-AHL |
| 2/20 | T.J. Tynan | RW | Sent to minors Colorado-AHL |
| 2/18 | Martin Kaut | RW | Called up from minors from Colorado-AHL |
| 2/17 | Mikko Rantanen | RW | Placed on IR Upper-body injury |
| 2/16 | Hunter Miska | G | Called up from minors from Colorado-AHL |
| 2/15 | Matt Calvert | LW | Placed on IR Lower-body injury - left game |
| 2/15 | Philipp Grubauer | G | Placed on IR Lower-body injury - left game |
| 2/14 | T.J. Tynan | RW | Called up from minors from Colorado-AHL |
| 2/13 | Mark Barberio | D | Called up from minors from Colorado-AHL |
| 2/10 | Calle Rosen | D | Sent to minors Colorado-AHL |
| 2/10 | Hunter Miska | G | Signed as Free Agent One-year, two-way contract |
| 2/9 | Nazem Kadri | C | Placed on IR Lower-body injury - left game |
| 2/5 | Calle Rosen | D | Called up from minors from Colorado-AHL |
| 2/5 | Mark Barberio | D | Sent to minors Colorado-AHL for conditioning stint |
| 12/24 | Anton Lindholm | D | Sent to minors Colorado-AHL |
| 12/20 | Calle Rosen | D | Sent to minors Colorado-AHL |
| 12/15 | Anton Lindholm | D | Called up from minors from Colorado-AHL |
| 12/12 | Adam Werner | G | Sent to minors Colorado-AHL |
| 12/11 | Adam Werner | G | Called up from minors from Colorado-AHL |
| 12/10 | Adam Werner | G | Sent to minors Colorado-AHL |
| 12/9 | Adam Werner | G | Called up from minors from Colorado-AHL |
| 12/9 | T.J. Tynan | RW | Sent to minors Colorado-AHL |
| 12/8 | T.J. Tynan | RW | Waived |
| 12/7 | Cale Makar | D | Placed on IR Upper-body injury - left game |
| 12/5 | Logan O'Connor | RW | Sent to minors Colorado-AHL |
| 11/30 | A.J. Greer | LW | Sent to minors Colorado-AHL |
| 11/30 | Sheldon Dries | C | Sent to minors Colorado-AHL |
| 11/28 | A.J. Greer | LW | Called up from minors from Colorado-AHL |
| 11/28 | Sheldon Dries | C | Called up from minors from Colorado-AHL |
| 11/25 | Erik Johnson | D | Placed on IR Lower-body injury |
| 11/24 | Calle Rosen | D | Called up from minors from Colorado-AHL |
| 11/24 | A.J. Greer | LW | Sent to minors Colorado-AHL |
| 11/23 | Jayson Megna | RW | Sent to minors Colorado-AHL |
| 11/19 | A.J. Greer | LW | Called up from minors from Colorado-AHL |
| 11/19 | Adam Werner | G | Sent to minors Colorado-AHL |
| 11/19 | Antoine Bibeau | G | Sent to minors Colorado-AHL |
| 11/18 | Logan O'Connor | RW | Called up from minors from Colorado-AHL |
| 11/16 | Kevin Connauton | D | Sent to minors Colorado-AHL |
| 11/16 | Matt Calvert | LW | Placed on IR Concussion - left game |
| 11/13 | Antoine Bibeau | G | Called up from minors from Colorado-AHL |
| 11/13 | Logan O'Connor | RW | Sent to minors Colorado-AHL |
| 11/11 | Logan O'Connor | RW | Called up from minors from Colorado-AHL |
| 11/11 | Kevin Connauton | D | Called up from minors from Colorado-AHL |
| 11/8 | Jayson Megna | RW | Called up from minors from Colorado-AHL |
| 11/7 | Adam Werner | G | Called up from minors from Colorado-AHL |
| 11/7 | Nikita Zadorov | D | Placed on IR Fractured jaw - left game |
| 11/7 | Philipp Grubauer | G | Placed on IR Lower-body injury |
| 11/6 | T.J. Tynan | C | Called up from minors from Colorado-AHL |
| 11/6 | Jayson Megna | RW | Sent to minors Colorado-AHL |
| 10/30 | Gabriel Landeskog | LW | Placed on IR Lower-body injury |
| 10/30 | Colin Wilson | LW | Placed on IR Lower-body injury |
| 10/29 | Jayson Megna | C | Called up from minors from Colorado-AHL |
| 10/22 | Mikko Rantanen | RW | Placed on IR Leg - left game |
| 10/16 | Kevin Connauton | D | Sent to minors Colorado-AHL |
| 10/9 | J.T. Compher | C | Placed on IR Lower-body injury |
| 10/8 | Kevin Connauton | D | Called up from minors from Colorado-AHL |
| 10/7 | Conor Timmins | D | Sent to minors Colorado-AHL |
| 10/1 | Calle Rosen | D | Sent to minors Coloraod-AHL |
| 10/1 | Kevin Connauton | D | Sent to minors Colorado-AHL |
| 10/1 | Jayson Megna | C | Sent to minors Colorado-AHL |
| 9/30 | T.J. Tynan | C | Sent to minors Colorado-AHL |
| 9/30 | A.J. Greer | LW | Sent to minors Colorado-AHL |
| 9/30 | Jayson Megna | C | Waived |
| 9/29 | Shane Bowers | C | Sent to minors Colorado-AHL |
| 9/29 | Kevin Connauton | D | Waived |
| 9/29 | T.J. Tynan | C | Waived |
| 9/29 | A.J. Greer | LW | Waived |
| 9/28 | Mikko Rantanen | RW | Re-Signed Six-year contract |
| 9/27 | Dan Renouf | D | Sent to minors Colorado-AHL |
| 9/27 | Jacob MacDonald | D | Sent to minors Colorado-AHL |
| 9/27 | Antoine Bibeau | G | Traded for Nicholas Meloche |
| 9/26 | Bowen Byram | D | Assigned to Junior Club Vancouver-WHL |
| 9/26 | Logan O'Connor | RW | Sent to minors Colorado-AHL |
| 9/26 | Sheldon Dries | C | Sent to minors Colorado-AHL |
| 9/26 | Michael Joly | RW | Sent to minors Colorado-AHL |
| 9/26 | Martin Kaut | RW | Sent to minors Colorado-AHL |
| 9/26 | Hunter Miska | G | Sent to minors Colorado-AHL |
| 9/26 | Jacob MacDonald | D | Waived |
| 9/26 | Dan Renouf | D | Waived |
| 9/23 | Anton Lindholm | D | Sent to minors Colorado-AHL |
| 9/23 | Mark Alt | D | Sent to minors Colorado-AHL |
| 9/22 | Kevin Davis | D | Sent to minors Colorado-AHL |
| 9/22 | Ty Lewis | LW | Sent to minors Colorado-AHL |
| 9/22 | Peter Tischke | D | Sent to minors Colorado-AHL |
| 9/22 | Nick Henry | RW | Sent to minors Colorado-AHL |
| 9/22 | Nicolas Meloche | D | Sent to minors Colorado-AHL |
| 9/22 | Colin Campbell | C | Sent to minors Colorado-AHL |
| 9/22 | Adam Werner | G | Sent to minors Colorado-AHL |
| 9/22 | Erik Condra | RW | Sent to minors Colorado-AHL |
| 9/22 | Mark Alt | D | Waived |
| 9/22 | Anton Lindholm | D | Waived |
| 9/18 | Alex Beaucage | RW | Assigned to Junior Club Rouyn-Noranda-QMJHL |
| 9/18 | Sasha Mutala | RW | Assigned to Junior Club Tri-City-WHL |
| 9/18 | Luka Burzan | RW | Assigned to Junior Club Brandon-WHL |
| 9/18 | Sasha Larocque | D | Released |
| 9/16 | Trent Miner | G | Assigned to Junior Club Vancouver-WHL |
| 9/16 | Josh Anderson | D | Sent to minors Colorado-AHL |
| 9/16 | Travis Barron | LW | Sent to minors Colorado-AHL |
| 9/16 | Igor Shvyrev | C | Sent to minors Colorado-AHL |
| 9/16 | Brandon Saigeon | C | Sent to minors Colorado-AHL |
| 9/16 | Josh Dickinson | C | Sent to minors Colorado-AHL |
| 9/13 | Ian Cole | D | Placed on IR Hips |
| 9/12 | Peter Tischke | D | Invited to Training Camp |
| 9/12 | Brandon Saigeon | C | Invited to Training Camp |
| 9/12 | Kevin Davis | D | Invited to Training Camp |
| 9/12 | Michael Joly | RW | Invited to Training Camp |
| 9/12 | Sasha Larocque | D | Invited to Training Camp |
| 9/12 | Hunter Miska | G | Invited to Training Camp |
| 9/12 | Erik Condra | RW | Invited to Training Camp |
| 9/12 | Colin Campbell | C | Invited to Training Camp |
| 8/29 | Patrick McGrath | RW | Signed as Free Agent Minors contract - Utah-ECHL |
| 8/28 | Cody Bass | C | Retired |
| 8/19 | Valeri Nichushkin | LW | Signed as Free Agent One-year contract |
| 8/5 | Griffen Molino | C | Signed as Free Agent Minors contract - Utah-ECHL |
| 8/1 | A.J. Greer | LW | Re-Signed One-year contract |
| 7/31 | Samuel Girard | D | Contract extended Seven-year contract extension |
| 7/31 | Tim McGauley | C | Signed as Free Agent Minors contract - Colorado-AHL |
| 7/31 | Ryan Wagner | LW | Signed as Free Agent Minors contract - Colorado-AHL |
| 7/30 | Vladislav Kamenev | C | Re-Signed One-year contract |
| 7/27 | Johnathan MacLeod | D | Signed as Free Agent Minors contract - Utah-ECHL |
| 7/25 | Sheldon Dries | C | Re-Signed One-year contract |
| 7/25 | Mason McDonald | G | Signed as Free Agent Minors contract - Colorado-AHL |
| 7/23 | Anton Lindholm | D | Re-Signed Two-year contract |
| 7/23 | Julien Nantel | C | Signed as Free Agent Minors contract - Colorado-AHL |
| 7/22 | Erik Condra | RW | Signed as Free Agent Minors contract - Colorado-AHL |
| 7/19 | Bowen Byram | D | Signed Three-year, entry-level contract |
| 7/18 | Kevin Davis | D | Signed as Free Agent Minors contract - Colorado-AHL |
| 7/17 | J.T. Compher | RW | Re-Signed Four-year contract |
| 7/17 | Brandon Saigeon | C | Signed Minors contract - Colorado-AHL |
| 7/15 | Andre Burakovsky | LW | Re-Signed One-year contract |
| 7/15 | Sergei Boikov | D | Signed with European team Dynamo Moscow-KHL |
| 7/12 | Hunter Miska | G | Signed as Free Agent Minors contract - Colorado-AHL |
| 7/9 | Sven Andrighetto | RW | Signed with European team Avangard Omsk-KHL |
| 7/8 | Ryan Graves | D | Re-Signed One-year contract |
| 7/5 | Nikita Zadorov | D | Re-Signed One-year contract |
| 7/2 | T.J. Tynan | C | Signed as Free Agent One-year contract |
| 7/2 | Jayson Megna | C | Signed as Free Agent One-year contract |
| 7/2 | Dan Renouf | D | Signed as Free Agent Two-year contract |
| 7/1 | Andrew Agozzino | LW | Became Unrestricted Free Agent |
| 7/1 | Colin Wilson | LW | Became Unrestricted Free Agent |
| 7/1 | Derick Brassard | LW | Became Unrestricted Free Agent |
| 7/1 | Joe Cannata | G | Became Unrestricted Free Agent |
| 7/1 | Gabriel Bourque | RW | Became Unrestricted Free Agent |
| 7/1 | David Warsofsky | D | Became Unrestricted Free Agent |
| 7/1 | Semyon Varlamov | G | Became Unrestricted Free Agent |
| 7/1 | Patrik Nemeth | D | Became Unrestricted Free Agent |
| 7/1 | Max McCormick | LW | Became Unrestricted Free Agent |
| 7/1 | Sven Andrighetto | RW | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Mason Geertsen | D | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Spencer Martin | G | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Julien Nantel | C | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Colin Wilson | LW | Signed as Free Agent One-year contract |
| 7/1 | Joonas Donskoi | RW | Signed as Free Agent Four-year contract |
| 7/1 | Pierre-Edouard Bellemare | C | Signed as Free Agent Two-year contract |
| 7/1 | Calle Rosen | D | Traded w/ Kadri, pick for Barrie, Kerfoot, pick |
| 7/1 | Nazem Kadri | C | Traded w/ Rosen, pick for Barrie, Kerfoot, pick |
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