| Jiri Tlusty was added to Senators. |
| 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. |
| Erik Brannstrom was added to Senators. |
| Senators paid 0 € to release Scott Glennie. |
| Matt Tomkins was released. |
| TRADE : From Senators to Blue Jackets : Marcus Kruger. |
| Josh Gorges was added to Senators. |
| Senators show interest in Ryan Murphy from waiver. |
| Brad Richards was released. |
| Senators claimed Nic Dowd from waivers by Blue Jackets for 0 €. |
| TRADE : From Wild to Senators : Reto Berra. |
| Patrick Kudla was added to Senators. |
| Scott Glennie was released. |
| Nick Bonino was added to Senators. |
| Blake Wheeler was added to Senators. |
