Lou Lamoriello trades
| Anaheim Ducks acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Oliver Kylington | March 7, 2025 | Future considerations |  |
| Colorado Avalanche acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Brock Nelson | March 7, 2025 | 2028 conditional 3rd round pick | |
| William Dufour | Calum Ritchie | |||
| Oliver Kylington | ||||
| 2026 conditional 1st round pick | ||||
| Comment: If the 1st round pick in the 2026 draft is transferred to the Philadelphia Flyers due to the terms of the trade for Sean Walker on March 6th 2024 or it is not transferred but falls in the top 10, then Colorado will send its 1st round pick in the 2027 NHL Draft. For the conditions of the 3rd round pick in the 2028 draft to be met, the Avalanche need to win the Stanley Cup this season and have Nelson play in at least 50% of their playoff games. Islanders retain 50% of Nelson's contract. | ||||
| New Jersey Devils acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Dennis Cholowski | March 7, 2025 | Adam Beckman | |
| New York Islanders acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
| Scott Perunovich | January 27, 2025 | 2026 conditional 5th round pick |  |
| Chicago Blackhawks acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | 2024 1st round pick | May 24, 2024 | 2024 1st round pick | |
| 2024 2nd round pick | 2024 2nd round pick | |||
| 2024 2nd round pick | ||||
| New York Islanders acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
| Robert Bortuzzo | December 8, 2023 | 2024 7th round pick | |
| Chicago Blackhawks acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| Josh Bailey | June 29, 2023 | Future considerations | |
| 2026 2nd round pick | ||||
| New York Islanders acquire | Date | Toronto Maple Leafs acquire | ||
|---|---|---|---|---|
| Pierre Engvall | February 28, 2023 | 2024 3rd round pick |  |
| New York Islanders acquire | Date | Vancouver Canucks acquire | ||
|---|---|---|---|---|
| Bo Horvat | January 30, 2023 | Anthony Beauvillier |  |
| Aatu Raty | ||||
| 2023 conditional first round pick | ||||
| Comment: The first round pick is top-12 protected, meaning that if the pick finishes in the top-12 of this year's draft, the Islanders keep the 2023 selection and the Canucks receive the Islanders' 2024 first round pick. | ||||
| New York Islanders acquire | Date | Montreal Canadiens acquire | ||
|---|---|---|---|---|
| Alexander Romanov | July 7, 2022 | 2022 1st round pick |  |
| 2022 4th round pick | ||||
| Buffalo Sabres acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Johnny Boychuk | November 4, 2021 | Future considerations | |
| Arizona Coyotes acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | 2023 conditional 3rd round pick | July 17, 2021 | No return - simply a salary dump | |
| 2022 conditional 2nd round pick | ||||
| 2021 2nd round pick | ||||
| Andrew Ladd | ||||
| Comment: Conditions on the 2022 2nd rounder going to Arizona in the Ladd deal: Coyotes get the better of the Islanders' two 2022 second round picks, either the Isles own or Colorado's (from the Devon Toews trade). | ||||
| Detroit Red Wings acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Nick Leddy | July 16, 2021 | Richard Panik | |
| 2021 2nd round pick | ||||
| New York Islanders acquire | Date | Ottawa Senators acquire | ||
|---|---|---|---|---|
| Braydon Coburn | April 11, 2021 | 2022 7th round pick |  |
| New York Islanders acquire | Date | Ottawa Senators acquire | ||
|---|---|---|---|---|
| Jean-Gabriel Pageau | February 24, 2020 | 2020 conditional 1st round pick | |
| 2020 2nd round pick | ||||
| 2022 conditional 3rd round pick | ||||
| Comment: The 2020 1st round pick shifts to a 2021 1st round pick if the Islanders' pick is in the top three this year. The 2022 3rd round pick will only transfer to the Senators if the Islanders win the Stanley Cup this year. | ||||
| Toronto Maple Leafs acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| Matt Lorito | February 24, 2020 | Jordan Schmaltz | |
| New York Islanders acquire | Date | New Jersey Devils acquire | ||
|---|---|---|---|---|
| Andy Greene | February 16, 2020 | 2021 2nd round pick | |
| David Quenneville | ||||
| New York Islanders acquire | Date | Toronto Maple Leafs acquire | ||
|---|---|---|---|---|
| Matt Martin | July 3, 2018 | Eamon McAdam | |