Livestock broking firms Hazlett and Peter Walsh & Associates are combining.
Succession planning by Peter and Karen Walsh and the PW&A board identified Hazlett as the company closest in culture to it, a statement from the two companies said.
The new structure would continue to be family-owned.
Hazlett will acquire all of PW&A's operations on July 1, except for Peter Walsh & Associates Finance (PWAF), which Peter Walsh will retain.
Hazlett chairman Graham Brown said his company and PW&A already knew each other well, having jointly developed and operated the Coalgate Saleyards.