| TRADE : From Panthers to Islanders : Logan Couture (74). |
| TRADE : From Islanders to Panthers : Nicklas Backstrom (57)- Y:24-RND:4-NYI. |
| TRADE : From Predators to Islanders : Jordan Oesterle (62)- Nathan Bastian (62)- Y:25-RND:7-LV . |
| TRADE : From Islanders to Predators : Y:24-RND:7-LV . |
| TRADE : From MapleLeafs to Islanders : Y:25-RND:4-TOR. |
| TRADE : From Islanders to MapleLeafs : Y:24-RND:5-CLB. |
| Islanders paid 2 400 000 $ to release Erik Johnson. |
| Erik Johnson was released. |
| Islanders paid 1 200 000 $ to release Ryan Johansen. |
| Ryan Johansen was released. |
| Artem Grushnikov was added to Islanders. |
| Henrik Tikkanen was added to Islanders. |
| Dennis Hildeby was added to Islanders. |
| Topias Vilen was added to Islanders. |
| Matthew Seminoff was added to Islanders. |
| Jeremy Hanzel was added to Islanders. |
| SoundTigers was eliminated at round 1 of year 23. |
| Islanders didn't make playoff for year 23. |
| TRADE : From Senators to Islanders : 250 000 $ (Money). |
| TRADE : From Islanders to Senators : Samuel Blais (63). |
