Transactions
| Date | Player | Pos | Transactions |
| 1/13 | Matthew Peca | C | Designated for assignment Taxi squad |
| 1/13 | Micheal Haley | LW | Designated for assignment Taxi squad |
| 1/13 | Joey Daccord | G | Designated for assignment Taxi squad |
| 1/13 | Filip Chlapik | LW | Designated for assignment Taxi squad |
| 1/13 | Jonathan Aspirot | D | Designated for assignment Taxi squad |
| 1/13 | Artem Zub | D | Designated for assignment Taxi squad |
| 1/13 | Francois Brassard | G | Released |
| 1/13 | Christian Jaros | D | Sent to minors Belleville-AHL |
| 1/13 | Mark Kastelic | C | Sent to minors Belleville-AHL |
| 1/13 | Parker Kelly | C | Sent to minors Belleville-AHL |
| 1/13 | Zachary Magwood | C | Sent to minors Belleville-AHL |
| 1/13 | Kevin Mandolese | G | Sent to minors Belleville-AHL |
| 1/13 | Logan Shaw | RW | Sent to minors Belleville-AHL |
| 1/13 | Egor Sokolov | LW | Sent to minors Belleville-AHL |
| 1/13 | Lassi Thomson | D | Sent to minors Belleville-AHL |
| 1/13 | Filip Gustavsson | G | Sent to minors Belleville-AHL |
| 1/13 | Ridly Greig | C | Sent to minors Belleville-AHL |
| 1/13 | Alex Formenton | LW | Sent to minors Belleville-AHL |
| 1/13 | Jonathan Davidsson | RW | Sent to minors Belleville-AHL |
| 1/13 | Logan Brown | C | Sent to minors Belleville-AHL |
| 1/13 | Erik Brannstrom | D | Sent to minors Belleville-AHL |
| 1/13 | J.C. Beaudin | C | Sent to minors Belleville-AHL |
| 1/13 | Olle Alsing | D | Sent to minors Belleville-AHL |
| 1/12 | Clark Bishop | C | Sent to minors Belleville-AHL |
| 1/12 | Clark Bishop | C | Traded for Maxime Lajoie |
| 1/11 | J.C. Beaudin | C | Waived |
| 1/11 | Logan Shaw | RW | Waived |
| 1/11 | Matthew Peca | C | Waived |
| 1/11 | Rudolfs Balcers | LW | Waived |
| 1/11 | Micheal Haley | LW | Waived |
| 1/11 | Filip Chlapik | LW | Waived |
| 1/11 | Christian Jaros | D | Waived |
| 1/10 | Maxime Lajoie | D | Waived |
| 1/6 | Joe LaBate | C | Signed as Free Agent Minors contract - Belleville-AHL |
| 1/5 | Vitaly Abramov | RW | Placed on IR Undisclosed injury |
| 1/2 | Francois Brassard | G | Invited to Training Camp |
| 12/30 | Ryan Callahan | RW | Retired |
| 12/29 | Ridly Greig | C | Signed Three-year, entry-level contract |
| 12/27 | Tim Stuetzle | LW | Signed Three-year, entry-level contract |
| 12/27 | Braydon Coburn | D | Traded w/ Paquette, pick for Nilsson, Gaborik |
| 12/27 | Cedric Paquette | C | Traded w/ Coburn, pick for Nilsson, Gaborik |
| 12/26 | Derek Stepan | C | Traded for '21 2nd-rd pick |
| 12/21 | Zachary Magwood | C | Traded for Michael Carcone |
| 11/20 | Egor Sokolov | LW | Signed Three-year, entry-level contract |
| 11/13 | Micheal Haley | LW | Signed as Free Agent One-year, two-way contract |
| 11/4 | Jonathan Davidsson | RW | Assigned to European Team Vasterviks IK-Sweden |
| 11/3 | Christian Jaros | D | Contract extended One-year, two-way contract extension |
| 10/28 | Alex Galchenyuk | C | Signed as Free Agent One-year contract |
| 10/27 | Filip Chlapik | LW | Re-Signed One-year, two-way contract |
| 10/26 | Chris Tierney | C | Re-Signed Two-year contract |
| 10/22 | Connor Brown | RW | Re-Signed Three-year contract |
| 10/19 | Rudolfs Balcers | LW | Assigned to European Team Stavanger-Norway |
| 10/18 | J.C. Beaudin | C | Re-Signed One-year, two-way contract |
| 10/17 | Joey Daccord | G | Contract extended Three-year, two-way contract extension |
| 10/16 | Rudolfs Balcers | LW | Re-Signed One-year, two-way contract |
| 10/15 | Evgenii Dadonov | RW | Signed as Free Agent Three-year contract |
| 10/14 | Nick Paul | C | Re-Signed Two-year contract |
| 10/13 | Olle Alsing | D | Assigned to European Team Graz 99ers-Austria |
| 10/10 | Austin Watson | RW | Traded for '21 4th-rd pick |
| 10/9 | Craig Anderson | G | Became Unrestricted Free Agent |
| 10/9 | Mikkel Boedker | LW | Became Unrestricted Free Agent |
| 10/9 | Jayce Hawryluk | RW | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 10/9 | Andreas Englund | D | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 10/9 | Mark Borowiecki | D | Became Unrestricted Free Agent |
| 10/9 | Ryan Callahan | RW | Became Unrestricted Free Agent |
| 10/9 | Ron Hainsey | D | Became Unrestricted Free Agent |
| 10/9 | Hubert Labrie | D | Became Unrestricted Free Agent |
| 10/9 | Clarke MacArthur | LW | Became Unrestricted Free Agent |
| 10/9 | Matthew Peca | C | Became Unrestricted Free Agent |
| 10/9 | Scott Sabourin | RW | Became Unrestricted Free Agent |
| 10/9 | Jordan Szwarz | RW | Became Unrestricted Free Agent |
| 10/9 | Morgan Klimchuk | LW | Became Unrestricted Free Agent |
| 10/9 | Anthony Duclair | LW | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 10/9 | Matt Murray | G | Re-Signed Four-year contract |
| 10/9 | Matthew Peca | C | Signed as Free Agent One-year, two-way contract |
| 10/9 | Logan Shaw | RW | Signed as Free Agent Two-year, two-way contract |
| 10/8 | Erik Gudbranson | D | Traded for '21 5th-rd pick |
| 10/7 | Matt Murray | G | Traded for Jonathan Gruden, '20 2nd-rd pick |
| 10/5 | Erik Brannstrom | D | Assigned to European Team SCL Tigers-Switzerland |
| 10/5 | Josh Brown | D | Contract extended Two-year contract extension |
| 10/2 | Josh Brown | D | Traded for 2020 4th-rd pick |
| 9/29 | Filip Chlapik | LW | Assigned to European Team Sparta Praha-Czech Republic |
| 9/26 | Filip Gustavsson | G | Assigned to European Team Sodertalje SK-Sweden |
| 9/25 | Bobby Ryan | RW | Waived For purpose of contract buyout |
| 9/20 | Andreas Englund | D | Signed with European team Vasterviks IK-Sweden |
| 9/2 | Vitaly Abramov | RW | Assigned to European Team Mikkelin Jukurit-Finland |
| 8/20 | Lassi Thomson | D | Assigned to European Team Ilves Tampere-Finland |
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