Gareth Davies hast stepped down from the position as he continues to focus on a serious family matter, Wynnstay announced. Davies remains on the board of directors.
Alk Brand has been appointed as CEO with effect from 1 October 2024.
The events follow Davies' agreed period of leave, reported on 26 February 2024.
Steve Ellwood, chairman, who assumed executive responsibilities on an interim basis, will relinquish these responsibilities and return to his previous non-executive role on 1 October 2024.
Group finance director, Rob Thomas, who also took up additional duties to cover Davies' leave of absence, has had his portfolio of responsibilities redefined and becomes chief financial officer from 1 October 2024. The Finance function is also strengthened.
Alk Brand was said to be a highly experienced chief executive, with a significant understanding of the agricultural sector, supply chains, farming co-operatives, and food markets.
Brand was previously CEO for four years of Westfalia Fruit Group, the UK-headquartered multinational supplier of fresh fruit and plant-based products to international retail, foodservice and wholesale markets.
Steve Ellwood, chairman of Wynnstay Group Plc, said: "Alk has a significant understanding of agriculture, supply chains and food production as well as wide ranging commercial experience. We welcome him to the group and look forward to working with him as we continue to take the business forward.
"I also take this opportunity to thank Gareth for the major contribution he has made to the development of the business over many years. He remains a valued and well-respected colleague who remains on the board in an advisory capacity for a further period."
Wynnstay has a head office in Llansantffraid, Powys.