Transactions
| Date | Player | Pos | Transactions |
| 12/6 | Boo Nieves | C | Sent to minors Hartford-AHL |
| 12/4 | Yegor Rykov | D | Sent to minors Hartford-AHL |
| 11/24 | Boo Nieves | C | Called up from minors from Hartford-AHL |
| 11/24 | Tim Gettinger | LW | Sent to minors Hartford-AHL |
| 11/17 | Tim Gettinger | LW | Called up from minors from Hartford-AHL |
| 11/17 | Lias Andersson | C | Sent to minors Hartford-AHL |
| 11/17 | Micheal Haley | LW | Waived |
| 10/28 | Ryan Lindgren | D | Called up from minors from Hartford-AHL |
| 10/28 | Filip Chytil | RW | Called up from minors from Hartford-AHL |
| 10/25 | Connor Brickley | RW | Signed with European team Red Bull Salzburg-Austria |
| 10/25 | Vitali Kravtsov | RW | Signed with European team Traktor Chelyabinsk-KHL |
| 10/8 | Matthew Robertson | D | Signed Three-year, entry-level contract |
| 10/7 | Nick Ebert | D | Traded w/ '21 4th-rd pick for Namestnikov |
| 10/1 | Boo Nieves | C | Sent to minors Hartford-AHL |
| 10/1 | Jonathan Racine | D | Signed as Free Agent Minors contract - Maine-ECHL |
| 10/1 | Micheal Haley | LW | Signed as Free Agent One-year contract |
| 10/1 | Yegor Rykov | D | Placed on IR Undisclosed injury |
| 9/30 | Tarmo Reunanen | D | Assigned to European Team Luuko Rauma-Finland |
| 9/30 | Joe Morrow | D | Released |
| 9/30 | Igor Shesterkin | G | Sent to minors Hartford-AHL |
| 9/30 | Filip Chytil | RW | Sent to minors Hartford-AHL |
| 9/30 | Vinni Lettieri | RW | Sent to minors Hartford-AHL |
| 9/30 | Ryan Lindgren | D | Sent to minors Hartford-AHL |
| 9/30 | Vitali Kravtsov | RW | Sent to minors Hartford-AHL |
| 9/30 | Boo Nieves | C | Waived |
| 9/27 | Steven Fogarty | C | Sent to minors Hartford-AHL |
| 9/26 | Danny O'Regan | C | Sent to minors Hartford-AHL |
| 9/26 | Steven Fogarty | C | Waived |
| 9/25 | Matthew Robertson | D | Assigned to Junior Club Edmonton-WHL |
| 9/25 | Phillip Di Giuseppe | RW | Sent to minors Hartford-AHL |
| 9/25 | Adam Huska | G | Sent to minors Hartford-AHL |
| 9/25 | Tarmo Reunanen | D | Sent to minors Hartford-AHL |
| 9/25 | Danny O'Regan | C | Waived |
| 9/24 | Phillip Di Giuseppe | RW | Waived |
| 9/23 | Connor Brickley | RW | Sent to minors Hartford-AHL |
| 9/23 | Sean Day | D | Sent to minors Hartford-AHL |
| 9/23 | Dawson Leedahl | LW | Sent to minors Hartford-AHL |
| 9/23 | Nick Jones | C | Sent to minors Hartford-AHL |
| 9/23 | Tim Gettinger | LW | Sent to minors Hartford-AHL |
| 9/21 | Matt Beleskey | LW | Sent to minors Hartford-AHL |
| 9/21 | Gabriel Fontaine | C | Sent to minors Hartford-AHL |
| 9/21 | Mason Geertsen | D | Sent to minors Hartford-AHL |
| 9/21 | Joey Keane | D | Sent to minors Hartford-AHL |
| 9/21 | Patrick Newell | LW | Sent to minors Hartford-AHL |
| 9/20 | Tony DeAngelo | D | Re-Signed One-year contract |
| 9/20 | Vincent LoVerde | D | Sent to minors Hartford-AHL |
| 9/20 | Jake Elmer | RW | Sent to minors Hartford-AHL |
| 9/20 | Darren Raddysh | D | Sent to minors Hartford-AHL |
| 9/20 | Brandon Crawley | D | Sent to minors Hartford-AHL |
| 9/20 | Matt Beleskey | LW | Waived |
| 9/16 | Hunter Skinner | D | Assigned to Junior Club London-OHL |
| 9/16 | Nico Gross | D | Assigned to Junior Club Oshawa-OHL |
| 9/16 | Ty Ronning | RW | Sent to minors Hartford-AHL |
| 9/16 | Ville Meskanen | C | Sent to minors Hartford-AHL |
| 9/16 | Tom McCollum | G | Sent to minors Hartford-AHL |
| 9/16 | Ryan Gropp | LW | Sent to minors Hartford-AHL |
| 9/16 | Francois Brassard | G | Sent to minors Hartford-AHL |
| 9/11 | Micheal Haley | LW | Invited to Training Camp |
| 9/11 | Vincent LoVerde | D | Invited to Training Camp |
| 9/11 | Mason Geertsen | D | Invited to Training Camp |
| 9/11 | Joe Morrow | D | Invited to Training Camp |
| 9/11 | Tom McCollum | G | Invited to Training Camp |
| 9/11 | Nick Jones | C | Invited to Training Camp |
| 9/11 | Connor Brickley | RW | Invited to Training Camp |
| 9/11 | Brendan Lemieux | LW | Re-Signed One-year contract |
| 9/3 | Francois Brassard | G | Invited to Training Camp |
| 8/20 | Jeff Taylor | D | Signed as Free Agent Minors contract - Hartford-AHL |
| 8/6 | Greg Chase | C | Signed as Free Agent Minors contract - Hartford-AHL |
| 7/31 | Kevin Shattenkirk | D | Waived For purpose of contract buyout |
| 7/26 | Pavel Buchnevich | RW | Re-Signed Two-year contract |
| 7/24 | Vinni Lettieri | RW | Re-Signed One-year contract |
| 7/19 | Jacob Trouba | D | Re-Signed Seven-year contract |
| 7/18 | Phillip Di Giuseppe | RW | Signed as Free Agent One-year contract |
| 7/17 | Marc-Olivier Crevier-Morin | D | Signed as Free Agent Minors contract - Maine-ECHL |
| 7/11 | Kaapo Kakko | RW | Signed Three-year, entry-level contract |
| 7/1 | Chris Bigras | D | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Connor Brickley | RW | Became Unrestricted Free Agent |
| 7/1 | Rob O'Gara | D | Became Unrestricted Free Agent |
| 7/1 | John Gilmour | D | Became Unrestricted Free Agent |
| 7/1 | Chris Nell | G | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Brandon Halverson | G | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Julius Bergman | D | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Dustin Tokarski | G | Became Unrestricted Free Agent |
| 7/1 | Fredrik Claesson | D | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Vincent LoVerde | D | Signed as Free Agent Minors contract - Hartford-AHL |
| 7/1 | Harry Zolnierczyk | LW | Signed as Free Agent Minors contract - Hartford-AHL |
| 7/1 | Tom McCollum | G | Signed as Free Agent Minors contract - Hartford-AHL |
| 7/1 | Greg McKegg | C | Signed as Free Agent One-year contract |
| 7/1 | Danny O'Regan | C | Signed as Free Agent One-year contract |
| 7/1 | Artemi Panarin | LW | Signed as Free Agent Seven-year contract |
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