Born in Graz, Riegler studied business administration and has accumulated more than 20 years of professional experience in the field of financial management. He worked for Roland Berger Strategy Consultants and held top international management positions in the Daimler Group. For example, he contributed his expertise to the restructuring of Chrysler, and served as CFO of Mercedes-Benz Belgium Luxembourg N.V. Subsequently he spent three years as the CFO of the publicly listed company Centrotherm Photovoltaics AG, and most recently as CFO and Commercial Director of Spheros Holding GmbH.
The management board of Lenzing AG will consist of four members as of June 1, 2014: Peter Untersperger, chairman and CEO; Friedrich Weninger, COO; Robert van de Kerkhof, CCO; and Thomas Riegler, CFO.