Mattias Janmark trades
| Vegas Golden Knights acquire | Date | San Jose Sharks acquire | ||
|---|---|---|---|---|
 | Mattias Janmark | April 12, 2021 | 2022 5th round pick |  |
| Chicago Blackhawks acquire | Date | San Jose Sharks acquire | ||
|---|---|---|---|---|
 | Nick DeSimone | April 12, 2021 | Mattias Janmark | |
| Detroit Red Wings acquire | Date | Dallas Stars acquire | ||
|---|---|---|---|---|
 | Erik Cole | March 1, 2015 | Mattias Backman |  |
| 2015 conditional 3rd round pick | Mattias Janmark | |||
| 2015 2nd round pick | ||||