Sam Gagner trades
| Edmonton Oilers acquire | Date | Detroit Red Wings acquire | ||
|---|---|---|---|---|
 | Andreas Athanasiou | February 24, 2020 | Sam Gagner |  |
| Ryan Kuffner | 2020 2nd round pick | |||
| 2021 2nd round pick | ||||
| Edmonton Oilers acquire | Date | Vancouver Canucks acquire | ||
|---|---|---|---|---|
| Sam Gagner | February 16, 2019 | Ryan Spooner |  |
| Arizona Coyotes acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
 | Nicklas Grossmann | June 27, 2015 | Sam Gagner |  |
| Chris Pronger | 2016 conditional 4th round pick or 2017 3rd round pick | |||
| Tampa Bay Lightning acquire | Date | Edmonton Oilers acquire | ||
|---|---|---|---|---|
 | Sam Gagner | June 29, 2014 | Teddy Purcell | |
| Arizona Coyotes acquire | Date | Tampa Bay Lightning acquire | ||
|---|---|---|---|---|
| Sam Gagner | June 29, 2014 | 2015 6th round pick | |
| B.J. Crombeen | ||||