Investor Presentaiton

Higher COGS due to FX, inflation and depreciation Cost of sales, in EUR mn Gross profit, in EUR mn / Gross margin, in % 34.6 36.1 34.1 32.5 32.8 281,4 297,1 309,8 301,5 248,2 128.4 135.6 145.1 164.2 170.5 Q4 2021 Q1 2022 Q2 2022 Q3 2022 Q4 2022 Selling, R&D and admin expenses, in EUR mn Q4 2021 Q1 2022 Q2 2022 Q3 2022 Q4 2022 Comments ‣ COGS up y-o-y ▸ Higher cost for energy and supplies ▸ Higher labor cost ▸ Higher depreciation FX effects Slight increase in wafer area sold 34.8 38.9 39.1 39.5 40.2 Q4 2021 Q1 2022 Q2 2022 Q3 2022 Q4 2022 Siltronic AG - Investor Presentation FY 2022 (siltronic March 9, 2023 perfect silicon solutions O Siltronic AG 23

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