Steve Mason trades
| Montreal Canadiens acquire | Date | Winnipeg Jets acquire | ||
|---|---|---|---|---|
 | Joel Armia | June 30, 2018 | Simon Bourque |  |
| Steve Mason | ||||
| 2019 7th round pick | ||||
| 2020 4th round pick | ||||
| Philadelphia Flyers acquire | Date | Columbus Blue Jackets acquire | ||
|---|---|---|---|---|
 | Steve Mason | April 3, 2013 | Michael Leighton |  |
| 2015 3rd round pick | ||||