Joe Mullen trades
| Calgary Flames acquire | Date | Pittsburgh Penguins acquire | ||
|---|---|---|---|---|
 | 1990 2nd round pick (#26-Nicolas Perreault) | June 16, 1990 | Joe Mullen |  |
| Calgary Flames acquire | Date | St. Louis Blues acquire | ||
|---|---|---|---|---|
| Terry Johnson | February 1, 1986 | Eddy Beers |  |
| Joe Mullen | Charles Bourgeois | |||
| Rik Wilson | Gino Cavallini | |||