Investor Presentaiton

High US-Dollar and Japanese Yen exposure FX exposure, in % FX sensitivity ~ 7% - 13% Sales EBITDA Unhedged - EUR 9 mn 1 USD-/SGD-cent change - EUR 13 mn -60% - 80% 1 JPY change ~ - EUR 1.7 mn EUR 1.3 mn Sales Costs ■USD SGD JPY EUR Other currency effects (mostly hedging), in EUR mn -0.4 0.0 -3.0 -3.0 Comments ▸ Strong USD and SGD y-o-y ▸ Weakening of JPY y-o-y ▸ Increasing USD exposure during 2022 ▸ Other currency effects in Q4 due to FX-valuation of receivables and payables and strategic hedging -15.0 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 24

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