| Alex Lyon was added to Senators. |
| Richard Panik was added to Senators. |
| Ashton Sautner was added to Senators. |
| Patrik Elias was added to Senators. |
| TRADE : From Senators to Devils : Troy Brouwer. |
| Luca Sbisa was added to Senators. |
| Jiri Tlusty was added to Senators. |
| TRADE : From Bruins to Senators : Brad Hunt. |
| TRADE : From Senators to Sabres : Nikolay Goldobin. |
| Matt Duchene was added to Senators. |
| Senators didn\'t make playoff for year 2016. |
| Senators paid 0 € to release Yann Danis. |
| Senators was eliminated at round 1 of year 2017. |
| Karri Ramo was released. |
| Melvin Nyffeler was added to Senators. |
| Kyle Clifford was added to Senators. |
| Maksim Sushko has been deleted from Senators. |
| Senators paid 0 € to release Nathan Gerbe. |
| Senators paid 0 € to release Marc Cheverie. |
| TRADE : From Sabres to Senators : Nikita Zadorov. |
