The following is a list of all team-to-team transactions that have occurred in the National Hockey League during the 1988–89 NHL season. It lists what team each player has been traded to, signed by, or claimed by, and for which player(s) or draft pick(s), if applicable.
Edmonton's first-round pick went to New Jersey as the result of a trade on June 17, 1989, that sent Corey Foster to Edmonton in exchange for this pick.
Vancouver's second-round pick went to Montreal as the result of a trade on March 6, 1990, that sent Jyrki Lumme to Vancouver in exchange for this pick.
The trade was for a conditional pick in 1989 Entry Draft. The condition – St. Louis receives a 5th-rd pick if Whistle played in 20 games or more in the 1988-89 or a 6th-rd pick if played in less than 20 goals - was not converted as he did not play in the NHL that season.
St. Louis' third-round pick was re-acquired as the result of a trade on December 12, 1989 that sent Todd Ewen to Montreal in exchange for future considerations (this pick).
St. Louis' first-round pick went to Vancouver as the result of a trade on March 6, 1990 that sent Harold Snepsts, Rich Sutter and Vancouver's second-round pick in the 1990 Entry Draft to St. Louis in exchange for Adrien Plavsic, St. Louis' second-round pick in the 1991 Entry Draft and this pick.
The Rangers' fourth-round pick then went to Minnesota as the result of a trade on March 6, 1990 that sent Mike Gartner to the Rangers in exchange for Ulf Dahlen, the Rangers' fourth-round pick in the 1991 Entry Draft and this pick.