The man credited with growing the fortunes of Waikato-Tainui's commercial coffers by $500 million over the last eight years is to step down.
Mike Pohio is leaving to pursue other opportunities.
Chair of Tainui Group Holdings, Sir Henry Van der Heyden said Mr Pohio has been instrumental in building confidence in the company and putting it in a strong position for the future.
He said Mr Pohio led signature projects such as New Zealand's largest shopping centre, The Base in Hamilton, the Novotel Airport Hotel in Auckland and securing a zoning change for a multi-million dollar inland port and commercial development at Ruakura.
Sir Henry said Mr Pohio has also been at the forefront in developing a new strategy for the company to diversify its investments beyond property with shareholdings in Waikato Milking Systems, Go Bus and Genesis Energy.
The Chair of Te Arataura, the tribe's executive board, Rahui Papa, said quality developments and investments led by Mr Pohio have helped establish a $1 billion platform of assets for Waikato-Tainui.
Mr Pohio will leave the company in April.