| TRADE : From Senators to Sabres : 250 000 $ (Money). |
| TRADE : From Sabres to Senators : Jakub Vrana (62). |
| TRADE : From Sabres to Senators : Andrew Poturalski (62). |
| TRADE : From Senators to Sabres : 250 000 $ (Money). |
| TRADE : From Bruins to Senators : 250 000 $ (Money). |
| TRADE : From Senators to Bruins : Lucas Carlsson (65). |
| TRADE : From Panthers to Senators : Erik Johnson (63). |
| TRADE : From Senators to Panthers : 250 000 $ (Money). |
| TRADE : From Bruins to Senators : Joona Koppanen (61)- Justin Sourdif (60). |
| TRADE : From Senators to Bruins : Tomas Nosek (63)- Dmitri Kostenko (P)- Y:26-RND:5-CAR- Y:26-RND:6-COL. |
| Le premier trio des Sens fait le travail! |
| TRADE : From MapleLeafs to Senators : Noah Gregor (62). |
| TRADE : From Senators to MapleLeafs : 250 000 $ (Money). |
| Egor Afanasyev was added to Senators. |
| TRADE : From GoldenKnights to Senators : David Perron (66). |
| TRADE : From Senators to GoldenKnights : 250 000 $ (Money). |
| Hendrix Lapierre is no longer as assistant for B-Senators. |
| Trevor Lewis has been selected as assistant for B-Senators. |
| TRADE : From GoldenKnights to Senators : Philipp Grubauer (67). |
| TRADE : From Senators to GoldenKnights : 250 000 $ (Money). |
