Investor Presentation Q2 2023

Major Capex in 2023 (mostly for FabNext) will fuel future growth Investment, in EUR million 363 257 188 -1,300 Comments 426 1,074 Capex Capex 2023 for FabNext, extension of crystal pulling hall in Freiberg and capability enhancement. Capex 2024 down by more than half Depreciation will more than double in 2024 Conservative Financing Approach ▸ Existing cash and future operating cash flows ▸ Customer prepayments Financial debt 2018 2019 2020 2021 2022 2023e 2024e (siltronic Siltronic AG - Investor Presentation Q2 2023 perfect silicon solutions July 27, 2023 O Siltronic AG 19

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