| | G | Contract extended (The Buffalo Sabres signed G Ukko-Pekka Luukkonen to a contract extension.) |
| | LW | Signed (The Buffalo Sabres signed F Beck Malenstyn to a two-year contract.) |
| | C | Signed (The Buffalo Sabres signed F Konsta Helenius to a three-year entry-level contract.) |
| | RW | Traded (The Edmonton Oilers traded F Tyler Tullio to the Buffalo Sabres.) From |
| | C | Traded (The Buffalo Sabres traded F Matt Savoie to the Edmonton Oilers.) To |
| | C | Traded (The Edmonton Oilers traded F Ryan McLeod to the Buffalo Sabres.) From |
| | G | Signed (The Buffalo Sabres signed G James Reimer to a one-year, two-way contract.) |
| | D | Signed (The Buffalo Sabres signed D Colton Poolman to a two-way contract.) |
| | LW | Released (The Buffalo Sabres released F Victor Olofsson.) |
| | C | Signed (The Buffalo Sabres signed F Sam Lafferty to a standard contract.) |
| | G | Signed (The Buffalo Sabres signed G Felix Sandstrom.) |
| | D | Signed (The Buffalo Sabres signed D Jacob Bryson to a standard contract.) |
| | C | Signed (The Buffalo Sabres signed F Mason Jobst.) |
| | LW | Signed (The Buffalo Sabres signed F Brett Murray.) |
| | D | Signed (The Buffalo Sabres signed D Dennis Gilbert to a standard contract.) |
| | C | Signed (The Buffalo Sabres signed F Josh Dunne.) |
| | RW | Signed (The Buffalo Sabres signed F Nicolas Aube-Kubel to a standard contract.) |
| | LW | Signed (The Buffalo Sabres signed F Jason Zucker to a standard contract.) |
| | D | Signed (The Buffalo Sabres signed D Jack Rathbone to a two-way contract.) |
| | LW | Became Unrestricted Free Agent (F Zemgus Girgensons elected free agency.) |
| | C | Became Unrestricted Free Agent (F Tyson Jost elected free agency.) |
| | D | Became Unrestricted Free Agent (D Jacob Bryson elected free agency.) |
| | LW | Became Unrestricted Free Agent (F Eric Robinson elected free agency.) |
| | G | Became Unrestricted Free Agent (G Eric Comrie elected free agency.) |
| | D | Became Unrestricted Free Agent (D Joseph Cecconi elected free agency.) |
| | G | Became Unrestricted Free Agent (G Dustin Tokarski elected free agency.) |
| | D | Became Unrestricted Free Agent (D Jeremy Davies elected free agency.) |
| | LW | Contract Expired (The Buffalo Sabres bought out F Jeff Skinner's contract.) |
| | D | Drafted (The Buffalo Sabres drafted D Patrick Geary.) |
| | D | Drafted (The Buffalo Sabres drafted D Luke Osburn) |
| | LW | Traded (The Washington Capitals traded F Beck Malestyn to the Buffalo Sabres) From |
| | D | Drafted (The Buffalo Sabres drafted D Simon-Pier Brunet) |
| | D | Drafted (The Buffalo Sabres drafted D Patrick Geary.) |
| | RW | Drafted (The Buffalo Sabres drafted RW Vasily Zelenov) |
| | D | Drafted (The Buffalo Sabres drafted D Adam Kleber) |
| | RW | Drafted (The Buffalo Sabres drafted RW Brodie Ziemer) |
| | G | Drafted (The Buffalo Sabres drafted G Ryerson Leenders.) |
| | C | Drafted (The Buffalo Sabres drafted C Konsta Helenius) |
| | D | Signed (The Buffalo Sabres signed D Kale Clague to a one-year, two-way contract) |
| | RW | Sent to minors (The Buffalo Sabres sent F Lukas Rousek to the minors.) |
| | G | Sent to minors (The Buffalo Sabres sent G Devon Levi to the minors.) |
| | RW | Activated (The Buffalo Sabres activated F Jack Quinn from the injured reserve.) |
| | G | Called up from minors (The Buffalo Sabres recalled G Devon Levi from the minors.) |
| | D | Sent to minors (The Buffalo Sabres assigned D Ryan Johnson to the minors.) |
| | D | Traded (The Florida Panthers traded D Calle Sjalin to the Buffalo Sabres.) |
| | D | Sent to minors (The Buffalo Sabres sent D Calle Sjalin to the minors.) |
| | D | Called up from minors (The Buffalo Sabres recalled D Kale Clague from the minors.) |
| | D | Traded (The Buffalo Sabres traded D Erik Johnson to the Philadelphia Flyers.) To |
| | RW | Traded (The Buffalo Sabres traded F Kyle Okposo to the Florida Panthers.) To |
| | C | Called up from minors (The Buffalo Sabres recalled F Tyson Jost from the minors.) |
| | RW | Called up from minors (The Buffalo Sabres recalled F Lukas Rousek from the minors.) |
| | D | Traded (The Buffalo Sabres acquired D Bowen Byram in a trade with Colorado.) From |
| | C | Traded (The Colorado Avalanche received F Casey Mittelstadt in a trade with Buffalo.) To |
| | C | Sent to minors (The Buffalo Sabres sent F Tyson Jost to the minors.) |
| | G | Called up from minors (The Buffalo Sabres recalled G Dustin Tokarski from the minors.) |
| | G | Sent to minors (The Buffalo Sabres sent G Dustin Tokarski to the minors.) |
| | D | Sent to minors (The Buffalo Sabres assigned D Kale Clague to the minors.) |
| | C | Called up from minors (The Buffalo Sabres recalled F Tyson Jost from the minors.) |
| | D | Activated (The Buffalo Sabres activated D Owen Power off Injured Reserve.) |
| | D | Sent to minors (The Buffalo Sabres sent D Kale Clague to the minors.) |
| | G | Sent to minors (The Buffalo Sabres assigned G Dustin Tokarski to the minors.) |
| | D | Placed on Injured Reserve (The Buffalo Sabres placed D Owen Power on Injured Reserve.) |
| | G | Called up from minors (The Buffalo Sabres recalled G Dustin Tokarski from the minors.) |
| | D | Called up from minors (The Buffalo Sabres recalled D Kale Clague from the minors.) |
| | D | Sent to minors (The Buffalo Sabres assigned D Kale Clague to the minors.) |
| | D | Called up from minors (The Buffalo Sabres recalled D Kale Clague from the minors.) |
| | G | Sent to minors (The Buffalo Sabres assigned G Dustin Tokarski to the minors.) |
| | G | Called up from minors (The Buffalo Sabres recalled G Dustin Tokarski from the minors.) |
| | G | Called up from minors (The Buffalo Sabres recalled G Dustin Tokarski from the minors.) |
| | RW | Placed on Injured Reserve (The Buffalo Sabres placed F Jack Quinn on injured reserve.) |
| | D | Placed on Injured Reserve (The Buffalo Sabres placed D Mattias Samuelsson on Injured Reserve.) |
| | D | Activated (The Buffalo Sabres activated D Erik Johnson.) |
| | C | Not With Team (The Buffalo Sabres FJiri Kulich is not with the team due to playing in the 2024 IIHF Worl Junior Championship.) |
| | G | Called up from minors (The Buffalo Sabres recalled G Eric Comrie.) |
| | G | Sent to minors (The Buffalo Sabres assigned G Devon Levi to the minors.) |
| | D | Placed on Injured Reserve (The Buffalo Sabres placed D Erik Johnson on Injured Reserve.) |
| | D | Called up from minors (The Buffalo Sabres recalled D Jacob Bryson.) |
| | G | Sent to minors (The Buffalo Sabres assigned G Eric Comrie to the minors.) |
| | G | Called up from minors (The Buffalo Sabres recalled G Devon Levi.) |
| | G | Sent to minors (The Buffalo Sabres sent G Devon Levi to the minors.) |
| | D | Sent to minors (The Buffalo Sabres assigned D Jacob Bryson to the minors.) |
| | G | Called up from minors (The Buffalo Sabres recalled G Eric Comrie from the minors.) |
| | D | Called up from minors (The Buffalo Sabres recalled D Jacob Bryson from the minors.) |
| | D | Sent to minors (The Buffalo Sabres assigned D Kale Clague to the minors.) |
| | D | Sent to minors (The Buffalo Sabres assigned D Kale Clague to the minors.) |
| | D | Called up from minors (The Buffalo Sabres recalled D Kale Clague from the minors.) |
| | LW | Placed on Injured Reserve (The Buffalo Sabres placed F Jeff Skinner on injured reserve.) |
| | RW | Activated (The Buffalo Sabres activated F Kyle Okposo.) |
| | RW | Traded (The Buffalo Sabres traded F Filip Cederqvist to the Montreal Canadiens.) To |
| | C | Called up from minors (The Buffalo Sabres recalled F Jiri Kulich from the minors.) |
| | RW | Placed on Injured Reserve (The Buffalo Sabres placed F Kyle Okposo on Injured Reserve.) |
| | G | Waived (The Buffalo Sabres waived G Eric Comrie.) |
| | C | Activated (The Buffalo Sabres activated F Tage Thompson from the Injured Reserve.) |
| | D | Called up from minors (The Buffalo Sabres recalled D Ryan Johnson from the minors.) |
| | D | Sent to minors (The Buffalo Sabres sent D Ryan Johnson to the minors.) |
| | D | Called up from minors (The Buffalo Sabres recalled D Ryan Johnson from the minors.) |
| | LW | Activated (The Buffalo Sabres activated F Zemgus Girgensons from injured reserve.) |
| | D | Activated (The Buffalo Sabres activated D Jacob Bryson from injured reserve.) |
| | C | Waived (The Buffalo Sabres waived F Tyson Jost.) |
| | C | Placed on Injured Reserve (The Buffalo Sabres placed F Tage Thompson on injured reserve.) |
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