Investor Presentation FY 2020

Net cash flow in line with expectation Operating cash flow (OCF), in EUR m Customer prepayments net (PP), in EUR m 100.7 85.6 58.6 60.9 31.4 3.6 3.5 -10.5 Q4 2019 Q1 2020 Q2 Q3 Q4 -21.6 -16.9 Q4 2019 Q1 2020 Q2 Q3 Q4 CF Capex, in EUR m Net cash flow (NCF), in EUR m 40.9 26.7 28.6 8.9 -48.8 -42.8 -46.8 -66.3 -88.2 -18.9 Q4 2019 Q1 2020 Q2 Q3 Q4 Q4 2019 NCF= OCF-PP+CF Capex Q1 2020 Q2 Q3 Q4 ठ (siltronic Siltronic AG - Investor Presentation FY 2020 perfect silicon solutions March 9, 2021 24 of 32

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