Despite expressing frustration with the team's performance, Kuehne remains a minority owner of Hamburger SV, which plays in the second tier of pro soccer in Germany.
He transformed the 600-year old Castell Son Claret on Mallorca into a luxury hotel, and built another hotel, The Fontenay, in Hamburg.
Kuehne is an only child and has no children. His charitable foundation will continue to manage his wealth after he passes away.
Logistics magnate Klaus-Michael Kuehne is honorary chairman of Kuehne + Nagel International AG, based in ‎Schindellegi‎, Switzerland.
He joined the company, cofounded by his grandfather, in 1958, eventually taking over as CEO in 1966.
In 2016, his Kuehne Holding AG acquired 20% of VTG, a rail logistics company. Two years later, it sold the stake to Morgan Stanley Infrastructure.
He owns roughly 30% of shipping and logistics company Hapag-Lloyd, a holding he has steadily increased in recent years.
Throughout the course of 2022, he acquired a 17.5% in Lufthansa, the German airline carrier, and became its largest single investor.