| | D | Released (Signed) |
| | LW | Released (Signed) |
| | D | Sent to minors (Providence (AHL)) |
| | D | Sent to minors (Providence (AHL)) |
| | D | Assigned to Junior Club (Niagara (OHL)) |
| | C | Assigned to Junior Club (Rimouski (QMJHL)) |
| | G | Assigned to Junior Club (Oshawa (OHL)) |
| | D | Released (Signed) |
| | LW | Released (Signed) |
| | RW | Released (Signed) |
| | C | Released (Signed) |
| | G | Invited to Training Camp (Signed) |
| | G | Invited to Training Camp (Signed) |
| | D | Traded (w/ two draft picks for Adam McQuaid) From |
| | D | Traded (for Steven Kampfer and two draft picks) To |
| | LW | Invited to Training Camp (Signed) |
| | RW | Invited to Training Camp (Signed) |
| | D | Invited to Training Camp (Signed) |
| | LW | Invited to Training Camp (Signed) |
| | D | Invited to Training Camp (Signed) |
| | C | Invited to Training Camp (Signed) |
| | LW | Invited to Training Camp (Signed) |
| | C | Signed with European team (Avangard Omsk (KHL)) |
| | C | Signed with European team (Geneve-Servette HC (Switzerland)) |
| | D | Signed with European team (Ak Bars Kazan (KHL)) |
| | C | Re-Signed (Two-year contract) |
| | C | Re-Signed (Three-year contract) |
| | LW | Re-Signed (One-year contract) |
| | G | Became Unrestricted Free Agent (Signed) |
| | D | Signed as Free Agent (One-year contract) |
| | D | Became Unrestricted Free Agent (Signed) |
| | C | Signed as Free Agent (Two-year contract) |
| | RW | Became Unrestricted Free Agent (Signed) |
| | D | Became Unrestricted Free Agent (Signed) |
| | D | Became Unrestricted Free Agent (Signed) |
| | C | Became Unrestricted Free Agent (Signed) |
| | D | Signed as Free Agent (Five-year contract) |
| | C | Became Unrestricted Free Agent (Signed) |
| | D | Became Unrestricted Free Agent (Signed) |
| | C | Became Unrestricted Free Agent (Signed) |
| | LW | Became Unrestricted Free Agent (Signed) |
| | RW | Became Unrestricted Free Agent (Signed) |
| | RW | Became Unrestricted Free Agent (Not tendered a qualifying offer) |
| | LW | Signed as Free Agent (Two-year contract) |
| | D | Signed (Three-year, entry-level contract) |
| | G | Signed as Free Agent (Two-year contract) |
| | C | Became Unrestricted Free Agent (Signed) |
| | C | Signed as Free Agent (One-year contract) |
| | RW | Signed with European team (Lillehammer IK (Norway)) |
| | D | Contract extended (Two-year contract extension) |
| | C | Signed as Free Agent (One-year contract) |
| | D | Signed (Three-year, entry-level contract) |
| | D | Signed (Two-year contract) |
| | D | Signed as Free Agent (Two-year, entry-level contract) |
| | C | Called up from minors (from Providence-AHL) |
| | C | Called up from minors (from Providence-AHL) |
| | RW | Called up from minors (from Providence-AHL) |
| | RW | Called up from minors (from Providence-AHL) |
| | G | Called up from minors (from Providence-AHL) |
| | D | Called up from minors (from Providence-AHL) |
| | LW | Called up from minors (from Providence-AHL) |
| | D | Called up from minors (from Providence-AHL) |
| | D | Called up from minors (from Providence-AHL) |
| | D | Called up from minors (from Providence-AHL) |
| | C | Called up from minors (from Providence-AHL) |
| | G | Called up from minors (from Providence-AHL) |
| | G | Sent to minors (Providence-AHL) |
| | G | Sent to minors (Providence-AHL) |
| | G | Called up from minors (from Providence-AHL) |
| | G | Called up from minors (from Providence-AHL) |
| | G | Sent to minors (Providence-AHL) |
| | G | Called up from minors (from Providence-AHL) |
| | RW | Signed as Free Agent (Two-year, entry-level contract) |
| | C | Sent to minors (Providence-AHL) |
| | C | Called up from minors (from Providence-AHL) |
| | D | Sent to minors (Providence-AHL) |
| | RW | Sent to minors (Providence-AHL) |
| | RW | Contract extended (One-year contract extension) |
| | D | Sent to minors (Providence-AHL) |
| | D | Called up from minors (from Providence-AHL) |
| | D | Contract extended (One-year contract extension) |
| | D | Retired (Signed) |
| | D | Signed (Two-year, entry-level contract) |
| | RW | Called up from minors (from Providence-AHL) |
| | D | Called up from minors (from Providence-AHL) |
| | LW | Sent to minors (Providence-AHL) |
| | LW | Called up from minors (from Providence-AHL) |
| | LW | Sent to minors (Providence-AHL) |
| | D | Sent to minors (Providence-AHL) |
| | LW | Signed (Two-year, entry-level contract) |
| | D | Called up from minors (from Providence-AHL) |
| | LW | Called up from minors (from Providence-AHL) |
| | C | Signed (Three-year, entry-level contract) |
| | RW | Suspension Over (Signed) |
| | C | Signed (Three-year, entry-level contract) |
| | RW | Suspended (Three games by NHL for interference) |
| | C | Traded (for 2019 5th-rd pick) From |
| | D | Sent to minors (Providence-AHL) |
| | LW | Traded (w/ 2 players and 2 picks for Rick Nash) To |
| | D | Waived (Signed) |
| | RW | Traded (for Three players and Two draft picks) From |
| | D | Waived (Signed) |
| | RW | Traded (w/ 2 players and 2 picks for Rick Nash) To |
| | D | Traded (w/ 2 players and 2 picks for Rick Nash) To |
| | RW | Signed as Free Agent (One-year contract) |
| | C | Traded (for a 2018 third-round draft pick) To |