| Patrik Elias was added to Lightning. |
| Richard Panik was added to Lightning. |
| Andrew MacDonald was added to Lightning. |
| TRADE : From Islanders to Lightning : Andrew MacDonald. |
| Theo Peckham was released. |
| Kyle Quincey was added to Lightning. |
| Lightning paid 0 € to release Jack Hillen. |
| Andrew Gordon was released. |
| Lightning show interest in Kyle Clifford from waiver. |
| Alex Stalock was added to Lightning. |
| Patrik Elias was released. |
| Brayden Burke was added to Lightning. |
| David Jones was released. |
| Lightning paid 0 € to release Jaroslav Janus. |
| Lightning paid 0 € to release Denis Hollenstein. |
| Noah Dobson has been added to Lightning. |
| Jack Hillen was released. |
| Lightning paid 0 € to release Mathias Niederberger. |
| Jarret Stoll was added to Lightning. |
| Lightning paid 0 € to release Deryk Engelland. |
