Investor Presentation FY 2020

Environment - Efficiency as a success factor Selection of non-financial performance indicators in 2020 GHG emissions Scope 1 and 2 absolute annual reduction by 2.2% Waste Recycling since 2015 Waste Recycling Ratio Energy 13 CLIMATE ACTION 7 AFFORDABLE AND CLEAN ENERGY Energy efficiency savings (GWh) 7.1 Occupational Safety in 2020 Working accidents with lost days per 1 million working hours (LTIF) 2.1 70% RESPONSIBLE 12 CONSUMPTION 3 GOOD HEALTH AND WELL-BEING AND PRODUCTION Siltronic AG - Investor Presentation FY 2020 (siltronic perfect silicon solutions March 9, 2021 10 of 32

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