Investor Presentation Q3 2020

Investor structure well diversified with a strong anchor shareholder 100 % 42.2 % 57.8 % 69.2 % Identified free float by region (as of August 2020) 24% 30% 11% 35% ■USA UK ■Germany Other Significant notifications of voting rights (as of October 27, 2020) 30.8 % Allianz Global Investors 5.13% State of Norway 4.93% BlackRock 3.85% pre-IPO post IPO since March 15, 2017 Goldman Sachs 3.62% Wacker Chemie AG Free Float DWS 3.23% Capital Group 3.01% (siltronic perfect silicon solutions. Siltronic AG - Investor Presentation Q3 2020 October 29, 2020 12 of 34

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