24 September 2026

COO Jan Kleijn will leave Mammoet per February 1, 2027.

After 30 years with Mammoet, including 15 years serving in leadership roles including both CEO and COO, Jan Kleijn will leave Mammoet on 1 February 2027.

Jan’s journey is a remarkable example of what is possible at Mammoet. Starting in operations and logistics, he grew through a variety of leadership roles to become its first employee CEO and later COO.