Investor Presentation FY 2020

Positive development of wafer volume in Q1 2021 - Strong foundry and logic business 300 mm - Ongoing uncertainty due to US-China trade tensions and Corona pandemic might lead to elevated inventories across the supply chain Partial digestion of server components 200 mm Recovery in automotive and industrial ongoing Uncertainty due to strained supply chains and Corona pandemic fears (siltronic perfect silicon solutions SD Trending up Siltronic AG - Investor Presentation FY 2020 March 9, 2021 27 of 32

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