Dr. Stefan Wolff is the Chairman of the Supervisory Board of 4flow. Co-founded in 2000 by Dr. Wolff in Berlin, Germany, 4flow is a leading provider of supply chain consulting, software and 4PL services. He was CEO of 4flow from 2000 until 2020. He as also the founder and Managing Director of Royal Oak GmbH in Berlin, Germany, that started operations in 2020. From 1994 until 2000, Dr. Wolff worked in various roles with an international supply chain consulting company, ultimately as a partner and vice CEO. In this position, he was also responsible for establishing the U.S. subsidiary in Boston, MA. Since 1990, Dr. Wolff has worked as a consultant to large and midsize companies in the field of supply chain management. From 1989 until 1994, he was a research associate with Professor Dr. Helmut Baumgarten, Logistics Department, Technical University of Berlin (TU Berlin). Dr. Wolff was an adjunct professor at Jacobs University Bremen. He also served as a member of the Board of BVL International - The Global Supply Chain Network. Dr. Wolff is a founding member of the Roundtable Germany, Council of Supply Chain Management Professionals (CSCMP). In 1994, he received a Ph.D. with distinction in engineering on the topic of IT systems in lead time management, from the Technical University of Berlin. His doctoral thesis received the German Science Award of Logistics from BVL in 1994 and the Konrad Mellerowicz Prize in 1995. From 1984 to 1989, he studied industrial engineering at the TU Berlin, with a focus on mechanical engineering and logistics. Dr. Wolff is the author of numerous works published in books, journals and periodicals. Moreover, he is regularly invited to speak at conferences, workshops, seminars, and universities.