Agri-services group Origin Enterprises said its group chief executive Tom O'Mahony will retire from the position and the board by the end of the 2020 financial year.
Mr O'Mahony has been CEO at the company for the past 13 years and has worked at the company for 35 years.
Sean Coyle, Origin's chief financial officer, has been appointed as Tom's successor.
Mr Coyle will take up the new role in July, with the leadership transition taking place between now and the end of July.
Origin said it will start the search for a new Group CFO and announce an appointment in due course.
Mr Coyle was formerly Group Finance Director and Managing Director of the Supply Chain Division of UDG Healthcare.
Before his job at UDG, Sean was CFO at Aer Lingus Group and, before that, held senior management positions at Ryanair.
Tom O'Mahony said that after 35 years at Origin and the last 13 as Group CEO, it is an "appropriate time for change".
He said the company's new CEO Sean Coyle combines the necessary leadership qualities with a strong intellectual capacity and a clear communication style to bring the group through its next phase of growth and development.
"Origin is well positioned to capitalise on its scale and competitive advantages as it continues to address the increasingly complex and sophisticated service requirements of primary food producers and amenity professionals," he added.