Stefan was CEO at RHI AG from December 2016 until October 2017. Prior to that, he was president and CEO at Israel Chemicals Ltd and between 2004 and 2012, he was CEO at Lonza Group. In his early career, he worked at BASF Group, where he held various management positions. Stefan was elected as President of the World Refractories Association for a two-year term in January 2018.
Stefan has a business administration degree from the University Saarbrücken and an MBA from the University of St. Gallen-HSG.
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