| | C | Designated for assignment (Taxi squad) |
| | C | Called up from minors (from taxi squad) |
| | G | Called up from minors (from taxi squad) |
| | G | Designated for assignment (Taxi squad) |
| | G | Designated for assignment (Taxi squad) |
| | RW | Designated for assignment (Taxi squad) |
| | RW | Called up from minors (from taxi squad) |
| | G | Called up from minors (from taxi squad) |
| | D | Retired (Signed) |
| | LW | Sent to minors (Rochester-AHL) |
| | RW | Designated for assignment (Taxi squad) |
| | C | Designated for assignment (Taxi squad) |
| | G | Designated for assignment (Taxi squad) |
| | D | Designated for assignment (Taxi squad) |
| | D | Designated for assignment (Taxi squad) |
| | RW | Designated for assignment (Taxi squad) |
| | LW | Called up from minors (from Rochester-AHL) |
| | D | Sent to minors (Rochester-AHL) |
| | D | Sent to minors (Rochester-AHL) |
| | C | Sent to minors (Rochester-AHL) |
| | C | Sent to minors (Rochester-AHL) |
| | G | Sent to minors (Rochester-AHL) |
| | D | Sent to minors (Rochester-AHL) |
| | RW | Sent to minors (Rochester-AHL) |
| | LW | Sent to minors (Rochester-AHL) |
| | G | Sent to minors (Rochester-AHL) |
| | D | Waived (Signed) |
| | RW | Waived (Signed) |
| | LW | Waived (Signed) |
| | LW | Sent to minors (Rochester-AHL) |
| | G | Waived (Signed) |
| | D | Sent to minors (Rochester-AHL) |
| | LW | Sent to minors (Rochester-AHL) |
| | RW | Signed as Free Agent (One-year contract) |
| | D | Invited to Training Camp (Signed) |
| | G | Invited to Training Camp (Signed) |
| | C | Sent to minors (Rochester-AHL) |
| | RW | Invited to Training Camp (Signed) |
| | C | Waived (Signed) |
| | D | Granted Leave of Absence (Opted out of 20-21 season) |
| | C | Re-Signed (One-year contract) |
| | D | Signed with European team (CSKA Moscow-KHL) |
| | RW | Signed (Three-year, entry-level contract) |
| | G | Signed as Free Agent (Two-year, two-way contract) |
| | G | Assigned to European Team (Krefeld Pinguine-Germany) |
| | LW | Re-Signed (Two-year contract) |
| | G | Re-Signed (One-year contract) |
| | RW | Re-Signed (One-year contract) |
| | D | Signed as Free Agent (One-year, two-way contract) |
| | RW | Signed as Free Agent (One-year, two-way contract) |
| | LW | Signed as Free Agent (One-year contract) |
| | LW | Signed as Free Agent (Minors contract - Rochester-AHL) |
| | C | Signed as Free Agent (Two-year contract) |
| | D | Re-Signed (One-year contract) |
| | D | Signed as Free Agent (One-year contract) |
| | RW | Signed as Free Agent (One-year contract) |
| | D | Became Unrestricted Free Agent (Not tendered a qualifying offer) |
| | RW | Became Unrestricted Free Agent (Signed) |
| | LW | Became Unrestricted Free Agent (Signed) |
| | LW | Became Unrestricted Free Agent (Not tendered a qualifying offer) |
| | D | Signed as Free Agent (One-year contract) |
| | LW | Became Unrestricted Free Agent (Signed) |
| | D | Became Unrestricted Free Agent (Not tendered a qualifying offer) |
| | RW | Became Unrestricted Free Agent (Signed) |
| | LW | Became Unrestricted Free Agent (Not tendered a qualifying offer) |
| | RW | Became Unrestricted Free Agent (Signed) |
| | LW | Became Unrestricted Free Agent (Signed) |
| | RW | Became Unrestricted Free Agent (Signed) |
| | D | Became Unrestricted Free Agent (Signed) |
| | C | Became Unrestricted Free Agent (Signed) |
| | D | Became Unrestricted Free Agent (Signed) |
| | G | Became Unrestricted Free Agent (Signed) |
| | D | Became Unrestricted Free Agent (Signed) |
| | LW | Contract extended (Three-year contract extension) |
| | G | Contract extended (One-year, two-way contract extension) |
| | RW | Contract extended (Three-year contract extension) |
| | C | Contract extended (Two-year, two-way contract extension) |
| | C | Contract extended (Two-year contract extension) |
| | C | Assigned to European Team (HC Benatky nad Jizerou-Czech Rep.) |
| | D | Assigned to European Team (Lahden Pelicans-Finland) |
| | RW | Assigned to European Team (Vasteras IK-Sweden) |
| | LW | Traded (for Eric Staal) To |
| | C | Traded (for Marcus Johansson) From |
| | C | Assigned to European Team (Ilves-Finland) |
| | LW | Signed as Free Agent (Two-year, entry-level contract) |
| | LW | Signed with European team (Brynas IF-Sweden) |
