After the 3rd Sustainable Investor Summit was successfully held online in 2020, the 4th Sustainable Investor Summit followed up as a face-to-face event and addressed all new aspects and relevant topics of sustainable and impact investing. The Summit took place on 29 September 2021 in Frankfurt and on 14 October 2021 in Vienna. The event series is aimed at academic institutions, pension funds, insurance companies, foundations, family offices, investment funds, banks and financial advisors.