The EU Taxonomy provides companies, investors, and policymakers with clear definitions of economic activities that can be considered environmentally sustainable. It has been set up as a so-called green classification system. This year, companies had to report on the EU Taxonomy for the first time, covering two of the mandatory environmental objectives climate change mitigation and adaptation. Sustainalize has analyzed the disclosures of approximately 35 AEX/AMX companies, investigating the responsivity of this new legislation. In this research report, we provide you with a deeper understanding of what the EU Taxonomy entails and insights into common practices and lessons learned.