Prof. dr. Jan Vis Rotterdam School of Management (Erasmus University), Competence Center Business Valuation (RSM). Jan Vis is affiliated with the Rotterdam School of Management (Erasmus University), and director of the Competence Center Business Valuation of the RSM. He is also director of Talanton Valuation Services in Utrecht. Before that, he held various positions in education and business. Among others as a lecturer in economics, controller, financial director and member of the Board of Directors of a Brazilian multinational. Publications in the field of management control, management issues and value management. Research areas: valuation issues, strategic value management and market processes. He studied economics, business administration and accountancy and received the degree "Master of Business Administration”.