Buffalo Sabres
| Date | Player | Last Season Stats | Experience | Age | Old Team | New Team | Notes |
|---|---|---|---|---|---|---|---|
| 06-01-2025 | Stiven Sardaryan (RW) | 2021 Draft pick (3/88) | 0 | 22 | Buf | - | - |
| 06-01-2025 | William von Barnekow (C/W) | 2021 Draft pick (6/161) | 0 | 22 | Buf | - | - |
| 06-01-2025 | Viljami Marjala (C/LW) | 2021 Draft pick (5/159) | 0 | 22 | Buf | - | - |
| 06-01-2025 | Ethan Miedema (LW) | - | 0 | 20 | Buf | - | - |
| 05-27-2025 | Lukas Rousek (RW/LW) | Cze | 0 | 26 | Buf | Europe | HV71 (Swe) |
| 05-26-2025 | Erik Brannstrom (D) | 30 GP, 2-11-13 | 5 | 25 | Buf | Europe | Lausanne (Swi) |
| 08-06-2024 | Justin Richards (C) | 1 GP, 0-1-1 | 1 | 27 | Buf | Europe | Dusseldorfer (Ger) |
| 07-20-2024 | Linus Weissbach (RW/LW) | Big10 | 0 | 27 | Buf | Europe | Frolunda (Swe) |
| 07-12-2024 | Mats Lindgren (D) | - | 0 | 20 | Buf | AHL | Wilkes-Barre/Scranton (AHL) |
| 07-12-2024 | Arttu Ruotsalainen (C/W) | 17 GP, 5-1-6 | 2 | 27 | Buf | Europe | Frolunda (Swe) |
| 07-05-2024 | Ty Tullio (C/RW) | Svk | 0 | 23 | Edm | Buf |
Traded
The Buffalo Sabres acquired forwards Ryan McLeod and Ty Tullio from the Edmonton Oilers for forward Matt Savoie.
|
| 07-05-2024 | Matt Savoie (RW/C) | - | 0 | 21 | Buf | Edm |
Traded
The Buffalo Sabres acquired forwards Ryan McLeod and Ty Tullio from the Edmonton Oilers for forward Matt Savoie.
|
| 07-05-2024 | Ryan McLeod (C/LW) | 10 GP, 0-1-1 | 3 | 25 | Edm | Buf |
Traded
The Buffalo Sabres acquired forwards Ryan McLeod and Ty Tullio from the Edmonton Oilers for forward Matt Savoie.
|
| 07-03-2024 | Riley Stillman (D) | 21 GP, 1-0-1 | 5 | 27 | Buf | Car | one-year two-way |
| 07-02-2024 | Colton Poolman (D) | AHL | 0 | 29 | Cgy | Buf | one-year two-way |
| 07-02-2024 | Victor Olofsson (LW/RW) | 56 GP, 13-19-32 | 5 | 29 | Buf | VGK | one-year |
| 07-02-2024 | James Reimer (G) | 22 GP, 15-5-2, 2.66, .906 | 13 | 37 | Det | Buf | one-year |
| 07-01-2024 | Mason Jobst (C) | AHL | 0 | 31 | AHL | Buf | one-year two-way |
| 07-01-2024 | Brandon Biro (LW) | AHL | 1 | 27 | Buf | Sea | one-year two-way |
| 07-01-2024 | Zemgus Girgensons (LW/C) | - | 9 | 31 | Buf | TB | three-year |
| 07-01-2024 | Dennis Gilbert (D) | 3 GP, 0-0-0 | 4 | 28 | Cgy | Buf | one-year |
| 07-01-2024 | Jeff Skinner (LW) | 53 GP, 7-7-14 | 13 | 33 | Buf | Edm | one-year |
| 07-01-2024 | Jacob Bryson (D) | 38 GP, 1-8-9 | 3 | 27 | Buf | Buf | one-year |
| 07-01-2024 | Jason Zucker (LW/RW) | 38 GP, 9-9-18 | 12 | 33 | Uta | Buf | one-year |
| 07-01-2024 | Eric Robinson (RW/LW) | 56 GP, 8-10-18 | 6 | 30 | Buf | Car | one-year |
| 07-01-2024 | Tyson Jost (C) | 54 GP, 7-10-17 | 7 | 27 | Buf | Car | one-year |
| 07-01-2024 | Eric Comrie (G) | 1 GP, 1-0-0, 3.00, .909 | 7 | 30 | Buf | Wpg | two-year |
| 07-01-2024 | Felix Sandstrom (G) | AHL | 2 | 28 | Phi | Buf | one-year two-way |
| 07-01-2024 | Nicolas Aube-Kubel (RW/LW) | 50 GP, 3-9-12 | 5 | 29 | Wsh | Buf | one-year |
| 07-01-2024 | Jeremy Davies (D) | 16 GP, 0-1-1 | 3 | 28 | Buf | Ott | one-year two-way |
| 07-01-2024 | Joseph Cecconi (D) | AHL | 0 | 28 | Buf | Min | one-year two-way |
| 07-01-2024 | Jack Rathbone (D) | 8 GP, 1-2-3 | 3 | 26 | Pit | Buf | one-year two-way |
| 07-01-2024 | Josh Dunne (C) | 6 GP, 0-0-0 | 2 | 26 | CBJ | Buf | two-year two-way |
| 07-01-2024 | Brett Murray (LW) | 2 GP, 0-0-0 | 2 | 26 | Buf | Buf | one-year two-way |
| 07-01-2024 | Sam Lafferty (RW/C) | 34 GP, 0-6-6 | 4 | 30 | Chi | Buf | two-year |
| 06-30-2024 | Calle Sjalin (D) | - | 0 | 25 | Buf | - | No qualifying offer |
| 06-29-2024 | Beck Malenstyn (LW) | AHL | 3 | 27 | Wsh | Buf |
Traded
The Buffalo Sabres acquired winger Beck Malenstyn from the Washington Capitals for a second-round draft pick in 2024 (No. 43 overall).
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