
| Player | Date | P | Comment |
|---|---|---|---|
| 11/1/2026 | D | Sent to minors (The New York Islanders assigned D Isaiah George to the minors.) | |
| 10/31/2026 | D | Called up from minors (The New York Islanders recalled D Isaiah George from the minors.) | |
| 10/27/2026 | LW | Sent to minors (The New York Islanders assigned F Pierre Engvall to the minors.) | |
| 10/27/2026 | D | Sent to minors (The New York Islanders assigned D Kashawn Aitcheson to the minors.) | |
| 10/26/2026 | LW | Placed on Injured Reserve (The New York Islanders placed F Matias Maccelli on injured reserve.) | |
| 10/26/2026 | LW | Called up from minors (The New York Islanders recalled F Pierre Engvall from the minors.) | |
| 10/26/2026 | D | Called up from minors (The New York Islanders recalled D Kashawn Aitcheson from the minors.) | |
| 10/26/2026 | C | Placed on Injured Reserve (The New York Islanders placed F Calum Ritchie on injured reserve.) | |
| 10/19/2026 | D | Placed on Injured Reserve (The New York Islanders placed D Alexander Romanov on injured reserve.) | |
| 10/19/2026 | RW | Called up from minors (The New York Islanders recalled F Mitchell Chaffee from the minors.) | |
| 10/7/2026 | D | Signed (The New York Islanders signed D Vladimir Dravecky to an entry-level contract.) | |
| 9/30/2026 | LW | Sent to minors (The New York Islanders assigned F Benjamin Brunelle to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Michael Hagens to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Henry Nelson to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Malte Gustafsson to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Lincoln Kuehne to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Adam Boqvist to the minors.) | |
| 9/30/2026 | RW | Sent to minors (The New York Islanders assigned F Tanner Adams to the minors.) | |
| 9/30/2026 | RW | Sent to minors (The New York Islanders assigned F Jacob Kvasnicka to the minors.) | |
| 9/30/2026 | C | Sent to minors (The New York Islanders assigned F Artyom Matyuk to the minors.) | |
| 9/30/2026 | G | Sent to minors (The New York Islanders assigned G Daniel Hauser to the minors.) | |
| 9/30/2026 | C | Sent to minors (The New York Islanders assigned F Jean-Gabriel Pageau to the minors.) | |
| 9/30/2026 | RW | Sent to minors (The New York Islanders assigned F Robert Cowan to the minors.) | |
| 9/30/2026 | C | Sent to minors (The New York Islanders assigned F Danny Nelson to the minors.) | |
| 9/30/2026 | C | Sent to minors (The New York Islanders assigned F Kamil Bednarik to the minors.) | |
| 9/30/2026 | C | Sent to minors (The New York Islanders assigned F Gabriel Frasca to the minors.) | |
| 9/30/2026 | C | Sent to minors (The New York Islanders assigned F Layne Gallacher to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Sam Laurila to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Zachary Schulz to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Dennis Good Bogg to the minors.) | |
| 9/30/2026 | LW | Sent to minors (The New York Islanders assigned F Quinn Finley to the minors.) | |
| 9/30/2026 | G | Sent to minors (The New York Islanders assigned G Sam Hillebrandt to the minors.) | |
| 9/30/2026 | RW | Sent to minors (The New York Islanders assigned F Ryan Bottrill to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Tomas Machu to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Xavier Veilleux to the minors.) | |
| 9/30/2026 | LW | Sent to minors (The New York Islanders assigned F Ryan Franks to the minors.) | |
| 9/30/2026 | D | Sent to minors (The New York Islanders assigned D Luke Antonacci to the minors.) | |
| 9/28/2026 | G | Waived (The New York Islanders waived G Vitek Vanecek.) | |
| 9/28/2026 | C | Placed on Injured Reserve (The New York Islanders placed F Mathew Barzal on the non-roster injured reserve list.) | |
| 9/28/2026 | LW | Sent to minors (The New York Islanders assigned F Cole Eiserman to the minors.) | |
| 9/28/2026 | D | Signed (The New York Islanders signed D Logan Stanley.) | |
| 9/28/2026 | D | Sent to minors (The New York Islanders assigned D Kashawn Aitcheson to the minors.) | |
| 9/28/2026 | D | Sent to minors (The New York Islanders assigned D Isaiah George to the minors.) | |
| 9/26/2026 | LW | Waived (The New York Islanders waived F Pierre Engvall.) | |
| 9/26/2026 | RW | Waived (The New York Islanders waived F Mitchell Chaffee.) | |
| 9/26/2026 | RW | Sent to minors (The New York Islanders assigned F Daniil Prokhorov to the minors.) | |
| 9/26/2026 | G | Sent to minors (The New York Islanders assigned G Joshua Kotai to the minors.) | |
| 9/22/2026 | C | Sent to minors (The New York Islanders assigned F Gleb Veremyev to the minors.) | |
| 9/22/2026 | LW | Sent to minors (The New York Islanders assigned F Jesse Nurmi to the minors.) | |
| 9/22/2026 | D | Sent to minors (The New York Islanders assigned D Calle Odelius to the minors.) | |
| 9/22/2026 | D | Sent to minors (The New York Islanders assigned D Jesse Pulkkinen to the minors.) | |
| 9/22/2026 | D | Sent to minors (The New York Islanders assigned D Ryan Healey to the minors.) | |
| 9/22/2026 | C | Sent to minors (The New York Islanders assigned F Cameron Berg to the minors.) | |
| 9/22/2026 | C | Sent to minors (The New York Islanders assigned F Luca Romano to the minors.) | |
| 9/22/2026 | G | Sent to minors (The New York Islanders assigned G Burke Hood to the minors.) | |
| 9/21/2026 | LW | Sent to minors (The New York Islanders assigned F Tomas Poletin to the minors.) | |
| 9/20/2026 | D | Signed (The New York Islanders signed D Luke Antonacci.) | |
| 9/20/2026 | RW | Signed (The New York Islanders signed F Ryan Bottrill.) | |
| 9/2/2026 | G | Activated (G Semyon Varlamov has been activated by the New York Islanders from injured reserve.) | |
| 9/2/2026 | C | Activated (F Kyle Palmieri has been activated by the New York Islanders from injured reserve.) | |
| 9/2/2026 | LW | Activated (F Pierre Engvall has been activated by the New York Islanders from injured reserve.) | |
| 8/18/2026 | RW | Signed (The New York Islanders signed F Victor Eklund.) | |
| 8/18/2026 | D | Activated (The New York islanders activated D Alexander Romanov from injured reserve.) | |
| 7/29/2026 | RW | Signed (The New York Islanders signed F Alex Jefferies to a two-way contract.) | |
| 7/14/2026 | D | Signed (The New York Islanders signed D Malte Gustafsson to an entry-level contract.) | |
| 7/1/2026 | D | Signed (The New York Islanders signed D Matthew Kessel.) | |
| 7/1/2026 | LW | Signed (The New York Islanders signed F Matias Maccelli.) | |
| 7/1/2026 | G | Signed (The New York Islanders signed G Vitek Vanecek.) | |
| 7/1/2026 | RW | Signed (The New York Islanders signed F Mitchell Chaffee.) | |
| 6/30/2026 | C | Became Unrestricted Free Agent (F Marc Gatcomb elected free agency.) | |
| 6/30/2026 | RW | Became Unrestricted Free Agent (F Matt Luff elected free agency.) | |
| 6/30/2026 | D | Became Unrestricted Free Agent (D Cole McWard elected free agency.) | |
| 6/30/2026 | D | Became Unrestricted Free Agent (D Travis Mitchell elected free agency.) | |
| 6/30/2026 | G | Became Unrestricted Free Agent (G Marcus Hogberg elected free agency.) | |
| 6/29/2026 | RW | Became Unrestricted Free Agent (F Max Shabanov elected free agency.) | |
| 6/29/2026 | D | Became Unrestricted Free Agent (D Carson Soucy elected free agency.) | |
| 6/29/2026 | G | Became Unrestricted Free Agent (G David Rittich elected free agency.) | |
| 6/29/2026 | LW | Became Unrestricted Free Agent (F Anders Lee elected free agency.) | |
| 6/27/2026 | D | Traded (The Minnesota Wild traded D Ryan Healey to the Minnesota Wild.) From Minnesota | |
| 6/27/2026 | D | Drafted (The New York Islanders drafted D Vladimir Dravecky.) | |
| 6/27/2026 | RW | Drafted (The New York Islanders drafted F Robert Cowan) | |
| 6/27/2026 | C | Drafted (The New York Islanders drafted F Artyom Matyuk.) | |
| 6/27/2026 | D | Drafted (The New York Islanders drafted D Lincoln Kuehne) | |
| 6/26/2026 | D | Drafted (The New York Islanders drafted D Malte Gustafsson.) |