#1siltronic perfect silicon solutions Siltronic AG Investor Presentation - FY 2020 March 9, 2021 Siltronic AG#2Increasing demand for electronic devices and new applications drive semiconductor growth, which in turn fuels silicon demand. Electronics Value Chain 2020 Electronics USD 1,650 bn Semiconductors USD 429 bn Semiconductor silicon wafers USD 11.2 bn Silicon for electronic applications USD 1.2 bn siltronic perfect silicon solutions Source: Electronics (IC Insights), Semiconductors (WSTS, only silicon-based), Silicon wafers (SEMI SMG), Electronic applications (estimate) (siltronic Siltronic AG - Investor Presentation FY 2020 perfect silicon solutions March 9, 2021 2 of 32#3Siltronic has a relevant global market share... Top 5 wafer producers serve more than 90% of market across all diameters 25% 17% 13% 13% 32% SK Siltron Siltronic ■Shin Etsu ■Sumco ■GlobalWafers (siltronic Siltronic AG - Investor Presentation FY 2020 perfect silicon solutions March 9, 2021 (siltronic perfect silicon solutions Sources: reported company revenues Q1-Q3 2020, converted to USD million 3 of 32#4and an international manufacturing network United States Freiberg CP* 300 mm Germany Portland 200 mm ► Central R&D hub in Burghausen ► High volume facilities for 300 mm in Germany and Singapore ► Among world's newest & largest fabs in Singapore *CP = Crystal Pulling | *SD = 150 mm and smaller (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 Burghausen CP* 300 mm SD* SSW CP* 300 mm SSP 200 mm Singapore 4 of 32#5Siltronic is focused on growing 300 mm and attractive 200 mm business. Development of Total Wafer Demand per Diameter, in mn 300 mm equivalents per month 7 -300 mm -200 mm-SD (pol/epi) 6 5 4 +32 1 Strong demand & 11 0 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 (siltronic Siltronic AG - Investor Presentation FY 2020 perfect silicon solutions March 9, 2021 growth Stable & attractive Mid-term decline Source: SEMI up to Jan 2021 5 of 32#6Cost-competitiveness a pre-requisite Major cost items Cost development 2021 ‣ Labour ▸ Supplies ▸ Depreciation ► Polysilicon ▸ Energy + DO (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 COLA ▸ Commodity Prices ► Productivity improvement Supply savings ▸ Recycling ▸ Energy efficiency Automation Cash cost development 6 of 32#7Overview Financials Adjusted financial figures 2016 2017 2018 2019 2020 (EUR million) Sales 933.4 1,177.3 1,456.7 1,270.4 1,207.0 EBIT 27.0 235.7 497.7 298.3 192.2 EBIT margin in % 2.9 20.0 34.2 23.5 15.9 EBITDA 146.0 353.1 589.3 408.7 332.0 EBITDA margin in % 15.6 30.0 40.5 32.2 27.5 Earnings per share 0.40 6.18 12.44 7.52 5.36 Capex 88.8 123.2 256.9 363.0 187.6 Free cash flow 1 19.0 169.6 416.4 36.4 32.0 Net cash flow 1 39.6 124.8 240.4 81.3 77.4 Dividend 75.0 150.0 90.0 60.0 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. Dividend proposal or EUR 2.00 per share to AGM on April 29, 2021 (siltronic Siltronic AG - Investor Presentation FY 2020 perfect silicon solutions March 9, 2021 7 of 32#8Creating value for all stakeholders ... its customers and suppliers ▸ Quality & Innovation Technology leadership ▸ Customer service its employees Siltronic offers ... its shareholders Long-term value enhancement ▸ Attractive return ▸ On-going cost reduction. the environment and society ▸ Occupational health & safety ▸ Human Resources Development ▸ Equality ▸ Conservation of resources & recycling ▸ Compliance & Human Rights ‣ Social commitment (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 8 of 32#9Clear commitment to sustainability Sustainability at Siltronic AG ▸ Claim: We understand sustainability not only as responsible action, but also want to generate competitive advantages through our sustainable actions. ▸ Strategy: We plan resource-saving right from the start, based on product and production safety as well as health and environmental protection. ▸ Voluntary commitments: We follow the principles of the Responsible Business Alliance (RBA) and the United Nations Global Compact. ‣ Goal: We want to reconcile the effects of our business activities with the expectations and needs of society. CDP: Siltronic has been evaluated by CDP since 2018; current evaluation results CDP Climate Change "B | Management" and Water Security "B | Management" ISS-oekom: Siltronic has been evaluated by ISS-oekom since 2017. With the "Prime" rating, Siltronic is one of the leading companies in the semiconductor industry in the area of sustainability. SUSTAINABLE DEVELOPMENT GOALS UMWELT ALLIANZ SACHSEN natürlich wirtschaftlich Responsible Business Alliance Formerly the Electronic Industry Citizenship Coalition Advancing Sustainability Globally GLOBAL COMPACT WE SUPPORT CDP Corporate Responsibility Prime rated by ISS-oekom➤ (siltronic Siltronic AG - Investor Presentation FY 2020 perfect silicon solutions March 9, 2021 9 of 32#10Environment - Efficiency as a success factor Selection of non-financial performance indicators in 2020 GHG emissions Scope 1 and 2 absolute annual reduction by 2.2% Waste Recycling since 2015 Waste Recycling Ratio Energy 13 CLIMATE ACTION 7 AFFORDABLE AND CLEAN ENERGY Energy efficiency savings (GWh) 7.1 Occupational Safety in 2020 Working accidents with lost days per 1 million working hours (LTIF) 2.1 70% RESPONSIBLE 12 CONSUMPTION 3 GOOD HEALTH AND WELL-BEING AND PRODUCTION Siltronic AG - Investor Presentation FY 2020 (siltronic perfect silicon solutions March 9, 2021 10 of 32#11CSR targets until 2030 Consistently sustainable action secures long-term competitive advantages for Siltronic NO 1 POVERTY (siltronic ZERO HUNGER SSS SODDHEALTH AND WELL-BEING QUALITY EDUCATION GENDER EQUALITY 6 AND SANITATION GLEAN WATER AFFORDABLE AND CLEAN ENERGY DECENT WORK AND ECONOMIC GROWTH INDUSTRY, INNOVATION AND INFRASTRUCTURE Reduce specific greenhouse gas emissions by 20%1 Reduce specific energy consumption by 20%1 Reduce specific water consumption by 20%1 Increase water recycling by 25%¹ Increase waste recycling by 25%¹ REDUCED SUSTAINABLE CITIES INEQUALITIES AND COMMUNITIES 12 CONSUMPTION RESPONSIBLE 13 CLIMATE LIFE ACTION BELOW WATER 15 FE ON LAND 16 PEACE, JUSTICE PARTNERSHIPS AND PRODUCTION AND STRONG INSTITUTIONS FOR THE GOALS perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 1 base value 2015 11 of 32#12Siltronic strategy - capitalize on market opportunities while focusing on 300 mm & technological leadership Optimize returns, stay ahead in technology and grow with the market Strategic Focus Grow with the market Ensure technology & Improve financial performance quality leadership & cash flow Execute cost reduction roadmaps & debottlenecking concepts We continuously increase the value for our stakeholders by providing best-in-class wafers at competitive costs. Siltronic AG - Investor Presentation FY 2020 (siltronic March 9, 2021 perfect silicon solutions 12 of 32#13Financials 2020 Siltronic AG#14Revenues down q-o-q due to seasonality and some FX headwind Sales, in EUR m 323.1 304.3 300.1 299.2 284.5 Q4 2019 Q1 2020 Q2 2020 Q3 2020 Q4 2020 (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 Comments ▸ Positive Wafer area sold up y-o-y ▸ Stabilizing price trend in H2 ▸ Negative ▸ ASP in EUR down y-o-y Prices down in H1 H2 down due to negative product mix and strong Euro ‣ Q4 burdened by some seasonality 14 of 32#15Lower wafer area sold and productivity gains lead to lower COGS q-o-q Cost of sales, in EUR m Gross profit, in EUR m / Gross margin, in % 31.8 29.8 30.7 207.4 210.8 224.0 221.0 26.1 25.6 211.7 Q4 2019 Q1 2020 Q2 Q3 Q4 96.9 89.3 99.1 78.2 72.8 Q4 2019 Q1 2020 Q2 Q3 Q4 Comment Selling, R&D and admin expenses, in EUR m 35.2 33.5 33.4 33.5 43.6 Q4 2019 Q1 2020 Q2 Q3 Q4 ▸ COGS up y-o-y Higher wafer area sold ▸ Higher scheduled depreciation and investments ▸ Costs per wafer area significantly down y-o-y Successful cost-reduction programs FX effects ► COGS down q-o-q Lower wafer area sold ▸ Productivity up ▸ Administration expenses up in Q4 ▸ External advisors on GlobalWafers' tender offer Siltronic AG - Investor Presentation FY 2020 (siltronic March 9, 2021 perfect silicon solutions 15 of 32#16High US-Dollar and Japanese Yen exposure FX exposure, in % FX sensitivity 10% ~ 25% Sales EBITDA unhedged ~ EUR 4.5 million 1 USD-cent change - ~ EUR 6 million - 65% - 65% 1 JPY change EUR 2.5 million - EUR 2 million Sales Costs USD SGD JPY EUR Other currency effects (mostly hedging), in EUR m Comment ▸ Strong Euro significant headwind on sales and earnings in 2020 ▸ Other currency effects of EUR -4m in 2020 0.4 0.6 -3.3 -4.2 -1.3 Q4 2019 Q1 2020 Q2 Q3 Q4 Siltronic AG - Investor Presentation FY 2020 (siltronic March 9, 2021 perfect silicon solutions 16 of 32#17EBITDA burdened by strong Euro and costs relating to tender offer in Q4 EBITDA, in EUR m / EBITDA margin, in % Depreciation, in EUR m 29.6 31.1 28.1 26.8 23.6 90.0 84.2 100.4 80.1 67.2 -33.3 -30.9 -33.5 -36.5 -38.8 Q4 2019 Q1 2020 Q2 Q3 Q4 Q4 2019 Q1 2020 Q2 Q3 Q4 EBIT, in EUR m / EBIT margin, in % Comments ▸ Positive 20.7 18.6 17.8 14.6 10.0 56.7 53.3 66.9 43.6 28.4 Q4 2019 Q1 2020 Q2 Q3 Q4 Siltronic AG - Investor Presentation FY 2020 (siltronic March 9, 2021 perfect silicon solutions Prices stable q-o-q Successful cost reduction programs and productivity gains ▸ Negative Wafer area sold down due to seasonality Strong Euro in H2 Advisory costs relating to GlobalWafers' tender offer ‣ Scheduled depreciation up q-o-q 17 of 32#18Net profit of EUR 187 million in 2020 Net profit, in EUR m EPS, in EUR 60.8 45.4 46.0 39.1 40.9 1.80 1.21 1.32 1.08 1.17 Q4 2019 Q1 2020 Q2 Q3 Q4 Q4 2019 Q1 2020 Q2 Q3 Q4 Dividend payment, in EUR m 150 90 75 60 FY 2018 FY 2019 FY 2020 FY 2021e (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 Comments ▸ Net profit of EUR 187 million in 2020; thereof EUR 160.8m attributable to Siltronic shareholders ▸ Dividend proposal of EUR 2.00 per share = EUR 60m dividend payout in 2021 18 of 32#19Tax rate significantly down Effects on tax expense in 2020 Tax expense w/o special effects Tax effects in USA Tax effects in Germany One-time payment to pension fund Tax expense incl. special effects (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 Tax rate: 8% Tax rate: 1% Comments ▸ The negative tax rate in Q4 due to one- time effects on current and deferred taxes Tax rate in 2020 only 1% ‣ USA Significant tax benefits to reduce burden of Corona pandemic ▸ Germany ▸ Degressive depreciation introduced. ▸ Pension fund One-time payment to allow pension fund to reduce its discount rate 19 of 32#20Working capital down High trade liabilities related to capex and advisory fees Working capital, in EUR m, Working capital ratio to quarterly sales, in % 60 58 55 73 71 Inventories and contract assets, in EUR m Inventories Contract assets 167.4 169.1 175.1 169.3 175.1 218.1 168.3 179.5 188.6 200.8 Dec 19 Mar 20 Jun 20 Sep 20 Dec 20 Dec 19 Mar 20 Jun 20 Sep 20 Dec 20 Trade receivables, in EUR m Trade liabilities, in EUR m 127.7 120.6 130.6 141.3 144.5 Dec 19 Mar 20 Jun 20 Sep 20 Dec 20 -126.8 -110.2 -117.1 -92.5 -118.8 Dec 19 Mar 20 Jun 20 Sep 20 Dec 20 (siltronic Siltronic AG - Investor Presentation FY 2020 perfect silicon solutions March 9, 2021 20 of 32#21Strong equity ratio and solid net financial assets Equity, in EUR m Equity ratio, in % 47.8 52.8 45.4 45.4 43.7 Provisions for pensions, in EUR m Net financial assets, in EUR m Interest rates IFRS USA 2.98% 2.88% 2.46% 2.41% 2.07% Germany 1.24% 1.92% 1.23% 0,95% 0.69% 1031 930 867 872 833 606 552 567 589 588 492 509 519 499 411 Dec Mar Jun 19 20 20 Sep Dec 20 20 19 Dec Mar Jun 20 20 Sep Sep Dec 20 20 Dec 19 Mar Jun 20 20 Sep 20 Dec 20 (siltronic Siltronic AG - Investor Presentation FY 2020 perfect silicon solutions March 9, 2021 21 of 32#22Pension reserves impacted by low IFRS interest rates DBO and pension reserves, in EUR m 1,278 ~850 USA mostly funded 142 2.07% 147 3% Germany unfunded 217 0.69% ~140 3% 711 108 50 Tii Funded through Wacker Pension Fund 919 0.69% DBO Dec, 2020 -560 3% DBO @3% 553 Assets Dec, 2020 Comment ▸ DBO of EUR 1,278 million - assets of EUR 711 million = EUR 567 million Pension reserves @3% = DBO of EUR ~850 million – assets EURO 711 million = EUR 139 million - ➤ IFRS interest uses bond yields only, assets include bonds, equity, real estate + derivatives ▸ Wacker pension fund ▸ fully funded under German pension fund regulations using 3.23% interest rate ▸ asset liability study: probability of return in next 20 years: ≥3.5% 59% ≥3.0% 75% ≥2.5% 87% (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 22 of 32#23Capex 2020 significantly down vs. 2019 Investment, in EUR m 123 54 0 2014-2016 257 363 188 2017 2018 2019 2020 (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 Comment ▸ Capex 2020 significantly down to EUR 188m Epi expansion in H2 to accommodate demand and market growth ‣ Investment in capabilities to enable leading-edge design rules 23 of 32#24Net cash flow in line with expectation Operating cash flow (OCF), in EUR m Customer prepayments net (PP), in EUR m 100.7 85.6 58.6 60.9 31.4 3.6 3.5 -10.5 Q4 2019 Q1 2020 Q2 Q3 Q4 -21.6 -16.9 Q4 2019 Q1 2020 Q2 Q3 Q4 CF Capex, in EUR m Net cash flow (NCF), in EUR m 40.9 26.7 28.6 8.9 -48.8 -42.8 -46.8 -66.3 -88.2 -18.9 Q4 2019 Q1 2020 Q2 Q3 Q4 Q4 2019 NCF= OCF-PP+CF Capex Q1 2020 Q2 Q3 Q4 ठ (siltronic Siltronic AG - Investor Presentation FY 2020 perfect silicon solutions March 9, 2021 24 of 32#25Outlook 2021 Siltronic AG#262021 off to a good start 2021 challenges and opportunities ‣ Good start in 2021 ▸ Overall high demand and good to very good loading ▸ Foundry, logic and image sensors expected to remain strong ▸ Inventory levels of memory chips still on a somewhat elevated level Memory business expected to show positive trend ▸ Increasing units in smartphones and cars combined with higher content will drive mid- to long-term growth Strong Euro headwind on revenues and margins (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 26 of 32#27Positive development of wafer volume in Q1 2021 - Strong foundry and logic business 300 mm - Ongoing uncertainty due to US-China trade tensions and Corona pandemic might lead to elevated inventories across the supply chain Partial digestion of server components 200 mm Recovery in automotive and industrial ongoing Uncertainty due to strained supply chains and Corona pandemic fears (siltronic perfect silicon solutions SD Trending up Siltronic AG - Investor Presentation FY 2020 March 9, 2021 27 of 32#28Estimated market growth of silicon area Silicon area share of end markets (2020) Phones 25% PCs 20% Servers 10% Industrials 15% Cars 10% Others 20% Impact on silicon area development Estimated development of end markets in 2021 Devices, silicon area share and their "content minus density" effect DRAM 18% NAND 23% High uncertainty due to phone mix Logic 34% Expected silicon growth in 2021 (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 Power/others 25% Impact on silicon area development 7-8% Source: Siltronic Marketing Feb.2021 28 of 32#29Siltronic Outlook 2021 (as of March 1, 2021) Sales EBITDA margin Depreciation EBIT - mid to high single-digit percent increase - slight increase around EUR 155m to EUR 160m significant increase Tax rate - significantly below 10% CapEx Net cash flow - around EUR 250 million (mainly in 300 mm epi, capabilities and expansion of crystal pulling hall to replace older equipment) slight improvement Earnings per share (siltronic perfect silicon solutions - slight increase Siltronic AG - Investor Presentation FY 2020 March 9, 2021 29 of 32#30Contact and Additional Information Issuer and Contact Siltronic AG Einsteinstraße 172 D-81677 München Investor Relations: Petra Mueller email: [email protected] Tel. +49 89 8564-3133 Financial Calendar 2021 Additional Information ISIN: DE000WAF3001 WKN: WAF300 Deutsche Börse: Listing: WAF Frankfurt Stock Exchange Prime Standard Annual General Meeting April 29, 2021 DEUTSCHE BÖRSE Q1 Quarterly Statement May 7, 2021 Q2 Interim Report Q3 Quarterly Statement July 28, 2021 October 26, 2021 PRIME STANDARD (siltronic perfect silicon solutions Siltronic AG - Investor Presentation FY 2020 March 9, 2021 MDAX TecDAX Corporate Responsibility rated by Prime ISS-oekom 30 of 32#31Disclaimer 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 FY 2020 March 9, 2021 31 of 32#32siltronic perfect silicon solutions SILTRONIC AG Einsteinstraße 172 81677 Munich Germany Siltronic AG