| Richard Panik was added to Senators. |
| Patrik Elias was added to Senators. |
| Alex Lyon was added to Senators. |
| Luca Sbisa was added to Senators. |
| Ashton Sautner was added to Senators. |
| Jiri Tlusty was added to Senators. |
| TRADE : From Senators to Devils : Troy Brouwer. |
| Senators paid 0 € to release Michael Ryder. |
| Mike Vecchione was released. |
| Senators paid 0 € to release Kevin Westgarth. |
| Nicolas Blanchard was released. |
| Evgeny Kuznetsov was added to Senators. |
| Nick Bonino was added to Senators. |
| Reto Berra was released. |
| Ben Youds was added to Senators. |
| TRADE : From Ducks to Senators : Josh Gorges. |
| Derek Meech was released. |
| Michael Ryder was released. |
| Erik Brannstrom was added to Senators. |
| Kevin Westgarth was released. |
