Aaron Mauger conceded results have not been good enough during his Highlanders tenure after being informed he will not keep his job.
The final game of the season saw the Highlanders trump the Hurricanes in Dunedin on Saturday.
The Blues and the Crusaders' respective Super Rugby Aotearoa seasons are over after their match on Sunday was called off.
Trailing at half-time, the Crusaders overcame the Highlanders to dodge a make-or-break date with the Blues in Super Rugby Aotearoa.
Sunday's bonus-point win at Forsyth-Barr Stadium moved the Blues to 22 points, just two points adrift of Super Rugby leaders the Crusaders.
Highlanders CEO Roger Clark said the club are "extremely disappointed" by the conduct of some of their players last weekend.
Sio Tomkinson's late try saw the Highlanders edge the Chiefs in a thriller.
The Hurricanes held off the Highlanders to record a second straight win in Super Rugby Aotearoa.
The Crusaders maintained their unbeaten start to the Super Rugby Aotearoa season by beating the Highlanders 40-20 on Saturday.
The Blues made it three wins from as many games in Super Rugby Aotearoa by defeating the Highlanders.
Bryn Gatland turned a joke with his father into reality when he proved to be the Highlanders' match-winner against the Chiefs.
It was a family affair at Forsyth Barr Stadium, with Bryn Gatland securing victory over the Highlanders over Warren Gatland's Chiefs.
There will be no limits on crowd numbers when the Super Rugby Aotearoa competition gets underway this week in New Zealand.
Super Rugby Aotearoa will see several rule changes when it kicks off on June 13.
Ben Smith says he will be no more than a spectator when the Super Rugby Aotearoa gets under way next month.
The Highlanders confirmed the signing of former All Blacks wing Nehe Milner-Skudder.