"The board now has to review and think through all options and also take into account how proceeds could be used," Ursula Gather, who heads the Alfried Krupp von Bohlen und Halbach foundation, told Rheinische Post newspaper.

"With regard to dividend payouts it would certainly be best to keep a stake in Elevator, the profitable business, that is as high as possible," she added.

(Reporting by Christoph Steitz; Editing by Michelle Martin)