Mark Johnson trades
| New Jersey Devils acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
 | Mark Johnson | September 19, 1985 | Shawn Evans |  |
| 1986 5th round pick (#87-Mike Wolak) | ||||
| Hartford Whalers acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
 | Mike Liut | February 21, 1985 | Mark Johnson | |
| future considerations (Jorgen Pettersson) | Greg Millen | |||
| Hartford Whalers acquire | Date | Minnesota North Stars acquire | ||
|---|---|---|---|---|
| Kent-Erik Andersson | October 1, 1982 | 1984 5th round pick (#89-Jiri Poner) |  |
| Mark Johnson | future considerations (Jordy Douglas) | |||
| Minnesota North Stars acquire | Date | Pittsburgh Penguins acquire | ||
|---|---|---|---|---|
| Mark Johnson | March 2, 1982 | 1982 2nd round pick (#38-Tim Hrynewich) |  |