Investor Presentaiton

Strong balance sheet - expected shift between cash & securities and fixed assets Balance Sheet Composition Sep 30, 2023 Dec 31, 2022 Assets, in EUR mn 4,326 4,051 Fixed Assets Inventories 73% 58% 7% 7% Receivables 8% 9% Cash & Securities 12% 26% Liabilities, in EUR mn 4,326 4,051 Equity 49% 51% Provisions 5% 5% Financial Liabilities 21% 19% Liabilites & Prepayments 25% 25% Siltronic AG- Investor Presentation Q3 2023 (siltronic perfect silicon solutions October 26, 2023 Comments Fixed assets: + EUR 795 mn vs. Dec 31, 22 ▸ Increase to EUR 3.2 bn due to high capex Cash & Securities: - EUR 543 mn vs. Dec 31, 22 Decline to EUR 506 mn Operating cash flow < payments for capex and dividend Equity Ratio: 49% ▸ Healthy level Financial Liabilities ► Last drawdown of Singapore Dollar loan in Q3 23 Liabilities/Prepayments ▸ Customer prepayments received: EUR 79 mn ▸ Provisions for pensions: slight decline to a historically low level O Siltronic AG 22 22

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