March 27, 2023 We have been advising Wienerberger AG on the further development of its sustainability management for several years. This includes scientific advice on the preparation of the report on non-financial performance in accordance with the Sustainability and Diversity Improvement Act (NaDiVeG) and sustainability reporting in accordance with the GRI standard; this was also the case for the combined Annual and Sustainability Report 2022, which has been available for download on Wienerberger’s website since March 27, 2023.