Jan Kleijn to leave Mammoet after 30 years

Alex Dahm Editor, International Cranes and Specialized Transport

24 September 2026

After three decades at Mammoet Jan Kleijn, chief operating officer, will leave the company on 1 February 2027.

For the last 15 years Kleijn held leadership roles, as CEO and then, in 2017, he moved to the COO position.

The world’s largest company specializing in heavy lifting and transport described…

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