#1Siltronic AG Investor Presentation Q3 2023 Sound Basis For Future Growth October 26, 2023 siltronic perfect silicon solutions Siltronic AG#2Market overview Siltronic AG#3Electronics value chain continued to grow in 2022 Increasing demand for electronic devices and new applications drive semiconductor growth, which in turn fuels silicon demand 0 siltronic perfect silicon solutions RAM 3D CPU IC (siltronic Siltronic AG- Investor Presentation Q3 2023 October 26, 2023 perfect silicon solutions T Electronics USD 1,855 bn Semiconductors USD 562 bn Semiconductor silicon wafers USD 13.8 bn Silicon for electronic applications USD 1.3 bn Sources: TechInsights, WSTS (Si based), SEMI SMG, Siltronic Marketing#4New applications for electronic devices and the infrastructure to support them continue to drive silicon demand Current growth drivers include Data explosion: connected devices, data transport and storage, big data, logic/Al Power: renewable energy, smart grid, battery chargers Automotive: ADAS, infotainment, electro mobility Pictures: coolhand118/stock.adobe.com, tippapatt/stock.adobe.com, monsitj/stock.adobe.com, Wellnhofer Designs/stock.adobe.com, E/stock.adobe.com, AdobeStock_101580295 (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023#5Consolidated market with 5 major wafer manufacturers Top 5 wafer producers serve up to 90% of the market across all diameters 14% ■SK Siltron ■ Siltronic ■Shin Etsu ■Sumco GlobalWafers Siltronic AG - Investor Presentation Q3 2023 (siltronic October 26, 2023 perfect silicon solutions siltronic perfect silicon solutions Source: Siltronic Estimates 2022 5#6Company overview Siltronic AG#7Siltronic at a glance M Munich Portland. Burghausen Freiberg Singapore USA Key financial figures 2022 France Germany Italy 4 world-class production sites ~ 4,500 employees global scale and reach China Singapore. 50+ years of history in silicon technologies Taiwan South Korea Japan ▸ Sales: EUR 1,805.3 million ➤ EBITDA: EUR 671.6 million ▸ EBITDA margin: 37.2% ▸ Net cashflow: EUR -395.4 million ▸ Net financial assets: EUR 373.6 million (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 = Production sites, Headquarter in Munich 7#8International manufacturing network supports strong market position and business focus 互 200 Portland mm Central R&D hub in Burghausen High-volume 300 mm fabs in Germany and Singapore Singapore fabs among the world's newest & largest Siltronic AG- Investor Presentation Q3 2023 (siltronic October 26, 2023 perfect silicon solutions Freiberg Burghausen CP* 300 mm SD* Singapore 200 SSW CP* 300 mm SSP mm *CP = Crystal Pulling | *SD = 150 mm and smaller#9A broad product portfolio covers standard and leading-edge requirements of the customers Portfolio ~65% Ø 300 mm Process CZ Products Double side polished wafer Epitaxial wafer Ultimate Silicon™ Main Applications Memory, Logic, Analog Portfolio 35% Ø 125-200 mm + SD Process CZ + FZ Standard products Polished wafer, Epitaxial wafer, Cut/lapped/etched wafer Special products Lowly-doped and highly-doped wafer Main Applications Logic, Analog, Discretes, Micro-processors, Image Sensors, Power- and Optoelectronics, IGBTs (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 Note: CZ: Czochralski crystal growing, FZ: float zone technology#10Siltronic is focused on growing 300 mm (6% in 2022) and attractive 200 mm business Development of Total Wafer Demand per Diameter, in mn 300 mm equivalents per month 9 -300 mm 8 200 mm 7 6 -SD (pol/epi) CAGR: 6.8% 5 4 3 Strong demand CAGR assumption of 6%1 Stable & attractive 2 1 0 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Mid-term decline (siltronic Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 perfect silicon solutions Source: SEMI up to Dec 2022 1) mid- and long term CAGR assumption, current 2023 market estimates below 6% 10 10#11Top technology position complemented with a high level of quality A leading position in wafer technology ▸ Commercialization of 3 nm node started in 2022 ▸ Development of 2 nm node started in 2021 (commercialization expected to start in 2024) ▸ Concurrently optimizing on 50+ wafer parameters of each design rule ▸ Single wafer traceability for 300 mm ▸ Standardized processes across sites enabling "copy exactly" at product level R&D expenditure, in EUR mn (% of sales) >400 R&D employees worldwide Approximately 1,890 pending and active CP patents in almost 350 patent families* Quality awards from several top semiconductor customers received over the years 2022 2021 2020 2019 2018 (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 89.5 (5.0%) (Intel) el 80.4 (5.7%) intel 2013 PREFECTULARITY TUESD CK intel 72.6 (6.0%) 68.4 (5.4%) 68.1 (4.7%) (intel (intel intel 2015 intol semuc intel) (Intel) wwwe ALIYEUER PARAD *as of December 31, 2022 11#12Cost-competitiveness a pre-requisite in the wafer industry Major cost items Continuous cost roadmaps to counter unit cost increases DO Labor Depreciation Supplies Energy Polysilicon (siltronic perfect silicon solutions Siltronic AG- Investor Presentation Q3 2023 October 26, 2023 Automation Productivity improvement Energy efficiency Recycling Supply savings O Siltronic AG 12#13Our objectives and values Profit We aim for profitability above industry average and positive cash flow across all market cycles Capabilities Be one generation ahead - we enable innovation at our customers Sustainability We act as a good "Corporate Citizen❞ and fully compliant with all applicable regulations. Part of our sustainability strategy are initiatives to anchor CSR even more in the company Partners Together with our customers and suppliers we build a winning network to create mutual, enduring value Efficiency Be a highly efficient, lean and fast moving organization driven by continuous improvement Quality We are committed to perfection in processes, products, organization and cooperation in order to to consistently fulfill our customer expectations People Diversity and respect are key. We promote strengths of people and expect a sense of responsibility and performance development. Occupational safety is a top focus Growth We continuously increase our company value by at least growing with the market (siltronic perfect silicon solutions Siltronic AG- Investor Presentation Q3 2023 October 26, 2023 O Siltronic AG 13#14Strategy based on four pillars Continuously increasing the value for our stakeholders Grow by optimizing product mix and increase capacities when needed Ο 00 Ensure top technology position & highest quality Improve financial performance & cash flow € Execute cost reduction roadmaps & debottlenecking concepts (siltronic perfect silicon solutions Optimize returns, stay ahead in technology and grow with the market Siltronic AG- Investor Presentation Q3 2023 October 26, 2023 O Siltronic AG 14#15Overview Financials Adjusted financial figures 2018 2019 2020 2021 2022 (EUR mn) Sales 1,456.7 1,270.4 1,207.1 1,405.4 1,805.3 EBIT 497.7 298.3 192.2 316.9 495.6 EBIT margin in % 34.2 23.5 15.9 22.5 27.5 EBITDA 589.3 408.7 331.9 466.4 671.6 EBITDA margin in % 40.5 32.2 27.5 33.2 37.2 Earnings per share 12.44 7.52 5.36 8.44 13.02 Capex 256.9 363.0 187.6 425.6 1,073.6 Free cash flow 1 416.4 36.4 32.0 108.6 -118.0 Net cash flow 1 240.4 81.3 77.4 1.7 -395.4 Dividend 2 150.0 90.0 60.0 90.0 90.0 1 2 In 2018, Siltronic started reporting the key figure „net cash flow" instead of free cash flow". Net cash flow represents free cash flow without the time shifts created by inflow and return of customer prepayments which, due to the size, impairs the meaningfulness of free cash flow. Proposed dividend for 2022 (siltronic Siltronic AG- Investor Presentation Q3 2023 October 26, 2023 perfect silicon solutions O Siltronic AG 15#16Outlook 2023 Siltronic AG#17Development in Q3 in line with expectations We are fully on track to reach FY guidance Stable pricing environment (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 00 € 日日日 2023 trough reached in Q3 due to weak demand Continued high investments to be ready for market turnaround O Siltronic AG 17#18Q3 2023 still impacted by industry weakness, but on a solid level 349 Sales in EUR mn Q2 2023: 404 -215 Net Cash Flow in EUR mn Q2 2023: -310 28.4 EBITDA Margin in % Q2 2023: 29.4 Stable Pricing environment 318 Capex in EUR mn Q2 2023: 366 Nov 30 Capital Markets Day London (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 O Siltronic AG 18#19Financials Q3 2023 Sound and expected performance in a still challenging environment Siltronic AG#20Q3 in line with expectations, pricing sentiment stable Profit & Loss, in EUR million Q1-Q3 Q3 2023 Q2 2023 Comments Sales: -14% qoq 2023 Sales 349.1 403.7 1,157.2 ➤ Lower wafer area sold ▸ Stable prices and FX Gross profit 75.7 101.1 293.0 Gross margin, in % 21.7 25.0 25.3 EBITDA 99.1 118.6 342.8 EBITDA margin, in % 28.4 29.4 29.6 EBITDA: -16% qoq, solid margin Stable unit cost for materials and energy Lower fixed cost dilution, but no negative inventory effects (like in Q2) Positive FX result of EUR 10 mn EBIT: -34% qoq EBIT 46.4 70.3 194.5 Expected increase in depreciation EBIT margin, in % 13.3 17.4 16.8 Net income: -43% qoq Net Income 35.1 61.4 169.0 Reduced interest income due to lower cash position EPS, in EUR 1.10 1.83 5.13 Increase in tax rate due to shift in site mix (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 O Siltronic AG 20 20#21Some insights into our FX effects FX Exposure 2023, in % FX Impacts 75% Sales 60% EBITDA-Cost ■ USD SGD JPY ■ EUR USD Sensitivity, based on 2023 exposure (EUR/USD 1.10) Change EUR/USD ± 1 USD-ct ‣ EUR 10 mn in Sales ▸ EUR 7 mn in EBITDA, unhedged (including highly correlated SGD-effect) USD Hedging strategy Operational hedging Strategic hedging: gradual hedging up to 18 months ahead, based on net FX exposure FX result (in other operating income/expenses) Mostly FX hedging ▸ Other valuation effects (trade receivables, payables) Siltronic AG - Investor Presentation Q3 2023 (siltronic October 26, 2023 perfect silicon solutions O Siltronic AG 21 24#22Strong 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#23Major Capex in 2023 (mostly for FabNext) will fuel future growth Investment, in EUR mn 257 363 188 ~1,300 Comments 426 1,074 Capex Capex 2023 for FabNext, extension of crystal pulling hall in Freiberg (inaugurated in September) and capability enhancement ▸ Capex 2024 will be reduced by more than half 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 Q3 2023 perfect silicon solutions October 26, 2023 O Siltronic AG 23 23#24High Capex covered by strong financing base Net Financial Debt, in EUR mn Net financial assets Dec 31, 2022 Operating Cash flow Payments for Capex Payments for Dividend -90 Others -19 Net Financial debt Sep 30, 2023 (siltronic perfect silicon solutions -316 374 -905 Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 324 Comments Four financing instruments in place ▸ Fully drawn ▸ ESG linked promissory note loan ▸ Singapore Dollar bilateral loan ▸ European Investment Bank loan ► Not drawn ▸ Syndicated loan (term loan and RCF) EUR 380 mn Net financial assets Dec 31, 2022, turning into net financial debt Sep 30, 2023 Solid operating cash flow Peak invest outflow, mainly for FabNext ► Dividend payment ▸ Change in net financial position EUR -689 mn O Siltronic AG 24#25Outlook 2023 and beyond. We are consistently preparing for the next profitable growth phase Siltronic AG#26Market environment still challenging - nevertheless stable pricing and solid profitability Market weakness due to excess inventory will trail into 2024 Environment of IN price stability High LTA share stabilizes business € Solid profitability (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 O Siltronic AG 26 26#27End markets are expected to stagnate in 2023 (before inventory effects) Consumption of wafers by end use 2022, in % Smartphones 22 22 Growth in demand for wafer area 2023 vs. 2022, in % -4 PCs Server 11 Industrial 17 16 Automotive 14 Others¹ 20 20 -17 -1 Total: -1 2 10 18 Source: Siltronic estimates, 1 Infrastructure Telecommunications, game consoles, consumer electronics such as televisions, white goods such as refrigerators Siltronic AG - Investor Presentation Q3 2023 (siltronic October 26, 2023 perfect silicon solutions O Siltronic AG 27#28Wafer demand in 2023 will be down around 15% due to inventory reductions; soft demand trailing into 2024 Composition of growth drivers for wafer market 2023 vs. 2022, in % -1 % (siltronic Total end markets Siltronic AG - Investor Presentation Q3 2023 perfect silicon solutions October 26, 2023 Inventory reduction at customers and OEMs - ~ -15% 2023E O Siltronic AG Source: Siltronic estimates 28#29The crystal ball has not cleared yet! (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 Inventory status: Memory peaked but still elevated, DRAM and NAND prices stabilizing Logic close to normal levels Power increasing, Auto forecast positive - has to be watched Economic and geopolitical uncertainties persist: Consumer sentiment in China € Persistant inflation ? Geopolitical risks Typical time-lag for wafer industry to turnaround: 6 months Source: nigel-tadyanehondo/unsplash.com O Siltronic AG 29 29#30FabNext first wafers to be produced soon - Freiberg pulling hall inaugurated in September HUMP AHEAD AHEAD € (siltronic First wafers to be produced soon Focus on qualifying customers High share of LTA, 80% during ramp phase Ramp speed for 2024 and 2025 slightly adjusted as communicated in Q2 EBITDA-Margin above 50% mid-term with growing impact on Group Margin during ramp perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 Extension of crystal pulling hall inaugurated € Several hundred million euros invested Product mix improvement O Siltronic AG Source: Siltronic 30 30#31Outlook 2023 confirmed and substantiated on the upper range of the bandwidths FY 2023 Sales 15% -17% below 2022 EBITDA Margin 28% - 30% Depreciation around EUR 200 mn (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 Capex around EUR 1.3 bn Net Cash Flow significantly below 2022 Tax Rate around 15% Based on FX assumption EUR/USD at 1.10 O Siltronic AG 31#32Next highlight: Capital Markets Day in London on November 30, 2023 (siltronic perfect silicon solutions Siltronic AG- Investor Presentation Q3 2023 October 26, 2023 CARR Venue: Andaz Hotel, 40 Liverpool Street, London Time: Start 9 am until around 3 pm CMT Main Topics: Strategy update and mid-term outlook ► Industry and technology deep-dives Presenters: Dr. Michael Heckmeier, CEO ▸ Claudia Schmitt, CFO ►Head of Marketing & Sales Head of Application Technology ▸ Head of Marketing & Global Power Business Further Information: ► https://www.siltronic.com/en/investors/capit al-markets-day.html O Siltronic AG 32#33Contact and Additional Information Issuer and Contact Siltronic AG Einsteinstraße 172 D-81677 München Investor Relations: Verena Stütze E-mail: [email protected] Tel: +49 89 8564-3133 Additional Information DE000WAF3001 ISIN: WKN: WAF300 Deutsche Börse: Listing: WAF Frankfurt Stock Exchange Prime Standard Financial Calendar 2024 DEUTSCHE BÖRSE SDAX TecDAX March 12 FY 2023 results May 2 Q1 2024 results July 25 Q2 2024 interim results PRIME STANDARD October 24 Q3 2024 results (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 Corporate ESG Performance RATED BY ISS ESG Prime O Siltronic AG 33 33#34Disclaimer The information contained in this presentation is for background purposes only and is subject to amendment, revision and updating. Certain statements contained in this presentation may be statements of future expectations, future financial performance and other forward-looking statements that are based on management's current views and assumptions and involve known and unknown risks and uncertainties. In addition to statements which are forward-looking by reason of context, including without limitation, statements referring to risk limitations, operational profitability, financial strength, performance targets, profitable growth opportunities and risk adequate pricing, words such as "may", "will", "should", "expects", "plans", "intends", "anticipates”, “believes”, “estimates”, “predicts", "continue", "projects" or "seeks", "potential", "future", or "further” and similar expressions may identify forward- looking statements. By their nature, forward-looking statements involve a number of risks, uncertainties and assumptions which could cause actual results or events to differ materially from those expressed or implied by the forward-looking statements. These include, among other factors, changing business or other market conditions, currency and interest fluctuations, introduction of competitive products, poor acceptance of new products and services, change of the corporate strategy and the prospects for growth anticipated by the management. These and other factors could adversely affect the outcome and financial effects of the plans and events described herein. Statements contained in this presentation regarding past trends or activities should not be taken as a representation that such trends or activities will continue in the future. Siltronic AG does not undertake and does not intent to undertake any obligation to update or revise any statements contained in this presentation, whether as a result of new information, future events or otherwise. In particular, you should not place any reliance on forward- looking statements which speak only as of the date of this presentation. (siltronic perfect silicon solutions Siltronic AG - Investor Presentation Q3 2023 October 26, 2023 O Siltronic AG 34#35siltronic perfect silicon solutions SILTRONIC AG Einsteinstr. 172 81677 Munich Germany Siltronic AG