Sto Se & Co. Kgaa Vorz-inhaber-akt Ohne Stimmrecht · XETR:STO3

Sto Se & Co. Kgaa Vorz-inhaber-akt Ohne Stimmrecht — Sto SE & Co. KGaA — Investor Presentation (August 2026)

107 slides from Sto Se & Co. Kgaa Vorz-inhaber-akt Ohne Stimmrecht's investor presentation, Aug 31, 2026

1. Slide 1: Presentation for investors Sto SE & Co. KGaA

   Presentation for investors Sto SE & Co. KGaA 31/08/2026 Sto SE & Co. KGaA reception building Design: Wilford Schupp Architekten, Stuttgart, DE Orange Blu, Stuttgart, DE 1

2. Slide 2: Presentation for investors

   Presentation for investors 1 2 3 4 Key financial General figures / Business Forecast and conditions & Information model outlook strategy about the Sto share Disclaimer: Any statements in this presentation that relate to the future correspond to the state of knowledge available at the time when the p

3. Slide 3: From our Guiding Principles

   From our Guiding Principles Our vision: technology leader in the sustainable design of living space tailored to human needs. Worldwide. Our mission: building with conscience. World map in render in the Sto SE & Co. KGaA reception building 3 31/08/2026

4. Slide 4: Sto - segment turnover

   Sto - segment turnover Share of Sto Group consolidated turnover for 2025 Western Europe Northern/Eastern Europe America/Asia/Pacific 203 13% 165 10% 1,223 77% Turnover 2025 Sto Group: EUR 1,591 million Figures in EUR million and %. 4 31/08/2026

5. Slide 5: Sto - product groups

   Sto - product groups Share of Sto Group consolidated turnover for 2025 Façade systems Façade coatings Interiors Other product groups 233 15% 240 15% 740 46% Turnover 2025 378 24% Sto Group: EUR 1,591 million Figures in EUR million and %; other product groups: Including floor coatings and products fo

6. Slide 6: Applications

   Applications Sto products & systems Facade Interior coatings coatings Thermal insulation/ Concrete and floor rainscreen cladding coatings facade Lacquers, glazes, and stains Acoustic systems Internal insulation Simplified schematic diagram. 6 31/08/2026

7. Slide 7: Climate protection

   Climate protection Sto’s business model makes a direct contribution 7 31/08/2026

8. Slide 8: Climate protection

   Climate protection Sto products - external wall insulation system (ETICS) 1 2 3 4 3 5 StoTherm Classic®system build-up 1 ─ Bonding 2 ─ Insulation 3 ─ Reinforcing compound 4 ─ Reinforcing mesh 5 ─ Finish 8 31/08/2026

9. Slide 9: ETICS according to fire class and costs (investor)

   ETICS according to fire class and costs (investor) Sto is an insulation-indifferentiated system provider for ETICS. Notes: Presentation exclusively relevant for the German market. Costs include material + labour. 9 31/08/2026

10. Slide 10: AimS. The most sustainable product line of Sto

    AimS. The most sustainable product line of Sto  Quality, climate protection and resource conservation are the basis for our AimS product line. We are setting new standards in ecological and economic criteria and achieving excellent processing properties.  Approx. 30% of the binder in AimS plasters

11. Slide 11: StoLevell Neo AimS

    StoLevell Neo AimS Cement-free mineral bonding & reinforcement mortar for ETICS Product:  World's first cement-free, mineral adhesive and reinforcing mortar with a CO2 eq saving of -50% (EPD A1-A3, cradle-to-gate) *1)  Meets all the requirements of a mineral mortar for use in an ETICS  Applicatio

12. Slide 12: Core target groups

    Core target groups Direct distribution Trade/specialised companies General contractors Planners Housing industry Architects Investors The customers that purchase from the Sto brand are generally tradespeople or specialist companies. The market cultivation activities for the Sto brand focus on these

13. Slide 13: Sto - presence in Germany

    Sto - presence in Germany Sales Germany ca. 90 SalesCentres ca. 300 Employees in the sales force incl. application engineering Headquarters Stühlingen As at: 16.04.2026 13 31/08/2026

14. Slide 14: Sto - presence in Germany subsidiaries

    Sto - presence in Germany 10 subsidiaries 1 StoCretec GmbH 2 SÜDWEST Lacke + Farben GmbH & Co. KG 3 STRÖHER Gruppe - STRÖHER GmbH 4 - STRÖHER Produktions GmbH & Co. KG 3 - GEPADI FLIESEN GmbH 8 4 JONAS Farben GmbH 1 5 VIACOR Polymer GmbH 2 6 Verotec GmbH 7 Innolation GmbH Headquarters Stühlingen 5 6

15. Slide 15: Sto – international presence

    Sto – international presence  With 50 Sto-subsidiaries in 35 countries represented  Represented with partners in more than 60 other countries Subsidiary Partner As at: 16.04.2026 15 31/08/2026

16. Slide 16: The Sto Group at a glance

    The Sto Group at a glance Sto Group Company brand Mixed brand presence Individual/family brand 16 31/08/2026

17. Slide 17: Presentation for investors

    Presentation for investors 1 2 3 4 Key financial General figures / Business Forecast and conditions & Information model outlook strategy about the Sto share Disclaimer: Any statements in this presentation that relate to the future correspond to the state of knowledge available at the time when the p

18. Slide 18: The history of Sto

    The history of Sto Founded in: 1955 From a lime plant to a global provider of coating solutions Sto SE & Co. KGaA communications building, Stühlingen Photo: Christian René Schulz, Bielefeld Design: Michael Wilford Architekten, Stuttgart/London 18 31/08/2026

19. Slide 19: The history of Sto

    The history of Sto Family entrepreneurs: Jochen Stotmeister (1), Gerd Stotmeister (2), Fritz Stotmeister († 21.04.2022) (3) 1) Chairman of the Supervisory Board of STO Management SE & Chairman of the Executive Board (1988–2015) 2) Member of the Supervisory Board of STO Management SE & Chief Technolo

20. Slide 20: Executive Board of STO Management SE

    Executive Board of STO Management SE Jost Bendel Rainer Hüttenberger Désirée Konrad Chief Technology Officer Chief Executive Officer Chief Financial Officer 20 31/08/2026

21. Slide 21: Social responsibility

    Social responsibility TRAINING AND FURTHER EDUCATION FOR TRADESPEOPLE AND ARCHITECTS Promoting young talent through education: the StoFoundation The foundation, which was launched in 2005, promotes the education of young people in trade and academic environments. It also supports projects for the pr

22. Slide 22: Global megatrends changing the world

    Strategy Future of work Global megatrends Increasing population and demographic change changing the world Sustainability and climate change Megatrends are long-term developments that bring about Digitisation and technological advancements lasting changes in society and the economy. Our strategy enab

23. Slide 23: Consideration of relevant sub-trends

    Strategy Changes in the world of Corporate culture work (new work) Lack of affordable housing Industrial prefabrication and modular construction Consideration of Circular economy Sustainable products and construction types relevant sub-trends Automation Omni-channel and and robotics artificial intel

24. Slide 24: Strategic targets at a glance

    Strategy Strategic targets at a glance Solution Leadership Growth Customer Centricity Our solution leadership and our core We grow by creating value and We make it easier for our customers to competences make us the first choice outpacing the market in defined do business with us. for facades. segme

25. Slide 25: M&A supports target achievement

    Strategy M&A supports target achievement M&A is aligned with the Group strategy. It is used specifically to access and develop markets and to expand expertise in order to overcome potential limits of in-house developments. 25 31/08/2026

26. Slide 26: Strategy 2030

    Strategy 10 Tangible Industrial Core segments & Rising segments & Omni- differentiation prefabrication product groups product groups channel Group strategic initiatives are the Demand-driven Organisation & Digital Sustainability Culture & personnel supply chain steering transformation strategy focus

27. Slide 27: Tangible differentiation

    Strategy Tangible differentiation By developing and marketing competitive, sustainable products and systems as well as digital services, we differentiate ourselves from the competition and create added value for our target groups. 27 31/08/2026

28. Slide 28: Sto Climate Partner Initiative

    Strategy Sto Climate Partner Initiative  As the ETICS market leader, we are driving forward climate targets in sustainable building renovation with the specialist trade.  Sto Climate Partners are actively shaping the future of building with us. 28 31/08/2026

29. Slide 29: StoHome – the fastest way to the quote

    StoHome – the fastest way to the quote StoHome App - Exclusively for climate partners  optimises and digitalises the quotation process for the renovation of detached and semi-detached houses  Includes: • visualisation • area determination • product selection • petermination of service items • Crea

30. Slide 30: Industrial prefabrication

    Strategy Industrial prefabrication By developing and marketing prefabricated construction elements for serial refurbishment and new built, providing automation units as well as robots for the application of our product range, we expand our solution leadership. 30 31/08/2026

31. Slide 31: Manufacturing technology

    Strategy Manufacturing technology  Robot cells for the fully automatic application of insulation, reinforcement, including mesh, and external render  Development of holistic solutions that combine product, process and machinery to achieve maximum performance in the application of Sto products  Sa

32. Slide 32: Core segments and product groups

    Strategy Core segments and product groups By strengthening our core segments and core product groups, as well as optimising our country-specific approach, we ensure the long-term success of our business. All our subsidiaries deliver their own positive contribution. 32 31/08/2026

33. Slide 33: Rising segments and product groups

    Strategy Rising segments and product groups By systematically identifying potential, we create the basis for the targeted development of new markets and the achievement of significant market coverage. 33 31/08/2026

34. Slide 34: Electrical conductivity coatings for floors

    Strategy Electrical conductivity coatings for floors Avoidance of electrostatic charges and discharges  Automotive and automotive supply industry  Semiconductor production  Data center  Electronics industry StoFloor ESD KU 614  Clean room Reliable protection for ESD areas  State-of-the-art, vo

35. Slide 35: Rainscreen cladding facades

    Strategy Rainscreen cladding facades Versatile system solutions - More than meets the eye StoVentec • Holistic solutions: from the sub-construction to the cladding • High degree of design freedom: jointless or joint- accentuated facades • Wide range of applications: New build & renovation residentia

36. Slide 36: Omni-channel

    Strategy Omni- channel By pursuing a proactive omni-channel approach in Europe, we offer our customers not only personal contact but also a unified customer experience across all sales channels, such as the web shop. 36 31/08/2026

37. Slide 37: Omni-Channel sales

    Strategy Omni-Channel sales Field service Sales centre Online sales Supports customers and Handles day-to-day  Webshop projects business in terms of  Social Media logistics and sales  Always available Project: Maina, Fossano, IT Planning: Giovanni Arnaudo, Cuneo, IT 37 31/08/2026

38. Slide 38: AI-based sales management in the project business

    Strategy AI-based sales management in the project business From reactive sales management to data-based growth management 1 Data basis & transparency 2 AI for sales management 3 Business impact ▦ CRM and • market data, e.g. iBau Sales Operating System ▲ • Greater market penetration Potential analysi

39. Slide 39: Demand-driven supply chain

    Strategy Demand-driven supply chain By having a future-proof distribution network and a demand-driven approach to the flow of goods across Europe, we increase our responsiveness and improve customer satisfaction. 39 31/08/2026

40. Slide 40: Organisation and steering

    Strategy Organisation and steering By developing and steering our organisation in the future and through harmonised and efficient business processes, we increase the effectiveness and profitability of the entire Sto Group. 40 31/08/2026

41. Slide 41: Digital transformation

    Strategy Digital transformation By equipping the organisation with the right digital tools and solutions, combined with a modern system and data architecture, we support our employees in their day-to- day work. 41 31/08/2026

42. Slide 42: Sustainability strategy

    Strategy Sustainability strategy By implementing our sustainability strategy, we contribute to climate and environmental protection above and beyond legal requirements. We also actively assume social and societal responsibility. 42 31/08/2026

43. Slide 43: Culture and personnel development

    Strategy Culture and personnel development By actively living our attitudes, we are creating a framework for all employees to have an impact and in which talents and teams can develop. This is how we shape the future and secure Connected the success of our business, together. 43 31/08/2026

44. Slide 44: EU Energy Performance of Buildings Directive

    EU Energy Performance of Buildings Directive Current status The deadline for transposing the EU Energy Performance of Buildings Directive (EPBD) into national law was 29 May 2026. No Member State has met this deadline. Transposition by the end of 2026 is likely to be tolerated; after that, infringem

45. Slide 45: Green Deal

    Green Deal Building Modernisation Act (GModG) in Germany Effective from 29 July 2026:  The Building Energy Act (GEG) becomes the Building Modernisation Act (GModG).  Repeal of the ‘Heating Act’ and abolition of the “65% renewable energy rule”.  Green gas quota from 2028 for biomethane and hydroge

46. Slide 46: Building stock in Germany

    Building stock in Germany  Sto has great expertise when it comes to energy-efficient facade insulation for new buildings and refurbishment projects.  Building permits for new construction: +6.0%residential construction overall, +7.1% multi-family houses, +15.6% detached and semi- detached houses.

47. Slide 47: Funding landscape European Sto markets

    Funding landscape European Sto markets Potential impacts: North-West Europe and Germany BEG €12 bill. in 2026: a reduction in the subsidy budget compared with the previous year. From July 2026, a gradual reduction in the eligible costs of refurbishment measures for multi-family dwellings. For detach

48. Slide 48: Funding landscape European Sto markets

    Funding landscape European Sto markets Potential impacts: South-East Europe Sanierungsoffensive for 2026, exclusively for new heating systems. At federal state level, funding is still available for 2026. This is often not used for EWIS. Ecobonus: 50 per cent tax relief, over 10 years, for energy-eff

49. Slide 49: Residential building permits EU 2020–2026

    Residential building permits EU 2020–2026* Signs of a slight recovery in spring 2026 are becoming apparent * Usable area m2 | Number of buildings Residential 49 31/08/2026

50. Slide 50: Building permits for new residential construction in Germany

    Building permits for new residential construction in Germany Number of buildings Single-family houses Multi-family houses 5,939 5,870 5,712 5,747 5,568 5,603 5,294 5,269 5,405 5,398 5,382 5,242 5,140 4,992 1,011 4,747 4,744 4,684 4,782 4,706 4,697 4,720 4,821 4,888 1,043 1,140 933 1,053 4,555 4,552

51. Slide 51: Construction measures renovation Residential buildings in Germany

    Construction measures renovation Residential buildings in Germany Number of construction projects 4,920 4,668 4,770 4,615 4,390 4,484 4,467 4,396 4,421 4,360 4,382 4,204 4,482 4,433 4,285 4,367 4,357 4,419 4,371 4,017 4,054 4,143 4,010 4,007 4,070 3,913 4,000 4,077 4,149 4,047 1 2 3 4 5 6 7 8 9 10 1

52. Slide 52: Interest rate trends in the eurozone

    Interest rate trends in the eurozone Increase in EUR benchmark interest rates* leads to higher mortgage interests 4.0 3.5 Market yield (%) 3.0 2.5 2.0 1,5 1Y 2Y 5Y 7Y 10Y 12Y 15Y 20Y 25Y 30Y Duration (years) aktuell current 6vor months ago 6 Monaten *Current market yields for German government bonds

53. Slide 53: Germany Ø temperature trend

    Germany Ø temperature trend 21 20 19 18 17 16 15 14 13 Grad Celsius 12 11 10 9 8 7 6 5 4 3 2 1 0 -1 -2 Januar Februar März April Mai Juni Juli August September Oktober November Dezember 2023 2024 2025 2026 Source: Deutscher Wetterdienst 53 31/08/2026

54. Slide 54: Presentation for investors

    Presentation for investors 1 2 3 4 Key financial General figures / Business Forecast and conditions & Information model outlook strategy about the Sto share Disclaimer: Any statements in this presentation that relate to the future correspond to the state of knowledge available at the time when the p

55. Slide 55: Sto at a glance

    Presentation for investors 3 Sto at a glance Half-year financial 2025 Annual Consolidated Reportreport interim for for report thethe period from period 1 January from to 30 1 January to June 2026 2026 31 March Consolidated Information 2025 interim Annualabout Reportthereport for the period from 1 Ja

56. Slide 56: Sto - at a glance

    Sto - at a glance * ROCE = EBIT divided by average capital employed. Capital employed = Intangible assets + Property, plant, and equipment + Rights of use + Inventories + Trade receivables ./. Trade payables Balance sheet values are calculated on the basis of an arithmetic average value of the respe

57. Slide 57: Sto - at a glance

    Sto - at a glance Group segment reporting as at 31st December 2025 57 31/08/2026

58. Slide 58: Sto at a glance

    Presentation for investors 3 Sto at a glance Half-year financial 2025 Annual Consolidated Reportreport interim for for report thethe period from period 1 January from to 30 1 January to June 2026 2026 31 March Consolidated Information 2025 interim Annualabout Reportthereport for the period from 1 Ja

59. Slide 59: Sto Group financial figures HY1/2026

    Sto Group financial figures HY1/2026 Highlights 806 12 EUR million turnover EUR million Investments* +4% vs. PY -46% vs. PY 5,507 30 Employees EUR million R EBT -1% vs. PY +17% vs. PY Information acc. to IFRS; * without: financial assets and IFRS 16. 59 31/08/2026

60. Slide 60: Sto Group financial figures HY1/2026

    Sto Group financial figures HY1/2026 Summary Sto SE & Co. KGaA Group turnover rises by 3.7% to EUR 805.5 million by the end of June 2026. First-quarter shortfall made up despite challenging conditions. EBIT rises by 20.6 % to EUR 30.5 million and EBT by 16.8% to EUR 29.9 million. EBIT margin ris

61. Slide 61: Sto Group Overview HY1/2026

    Sto Group Overview HY1/2026 Improved profitability despite a challenging market environment Information acc. to IFRS; Rounding of amounts may lead to minor deviations in totals and in the calculation of percentages in this report. 61 31/08/2026

62. Slide 62: Sto Group turnover

    Sto Group turnover HY1/2026: Positive performance despite challenging conditions in EUR million 888 856 806 796 777 01 - 06 2022 01 - 06 2023 01 - 06 2024 01 - 06 2025 01 - 06 2026 Information acc. to IFRS. 62 31/08/2026

63. Slide 63: Sto Group turnover

    Sto Group turnover HY1/2026: Group segment reporting in EUR million Westeuropa Nord-/Osteuropa Amerika/Asien/Pazifik +5% 623 597 -5% 104 +9% 98 84 77 01 - 06 2025 01 - 06 2026 Information acc. to IFRS. 63 31/08/2026

64. Slide 64: Sto Group turnover

    Sto Group turnover HY1/2026: In Germany +5%; Outside of Germany +3% in EUR million 515 Inland Ausland 499 482 474 468 373 357 324 322 309 01 - 06 2022 01 - 06 2023 01 - 06 2024 01 - 06 2025 01 - 06 2026 Information acc. to IFRS. 64 31/08/2026

65. Slide 65: Sto Group EBT & EAT

    Sto Group EBT & EAT HY1/2026: Improved earnings despite a challenging market environment in EUR million EBT EAT 63 58 44 40 30 30 26 20 19 16 01 - 06 2022 01 - 06 2023 01 - 06 2024 01 - 06 2025 01 - 06 2026 Information acc. to IFRS. 65 31/08/2026

66. Slide 66: Sto Group employees

    Sto Group employees HY1/2026: Group-wide workforce reduced In Germany Outside Germany Sto Group 5,796 5,801 5,784 5,534 5,507 3,131 3,125 3,116 3,032 3,027 2,680 2,676 2,653 2,502 2,480 30.06.2022 30.06.2023 30.06.2024 30.06.2025 30.06.2026 66 31/08/2026

67. Slide 67: Sto Group investments

    Sto Group investments HY1/2026: Investments below the previous year’s figure in EUR million 22 16 14 14 12 01 - 06 2022 01 - 06 2023 01 - 06 2024 01 - 06 2025 01 - 06 2026 Information acc. to IFRS; however, without effects from IFRS 16, without investments and depreciation/amortization of financial

68. Slide 68: Sto Group balance sheet

    Sto Group balance sheet Very solid balance sheet structure as at 30/06/2026 1,208 in million 1,208 Non-current assents EUR Equity capital 497 765 (Equity ratio 63%) Current assets 608 Non-current provisions and liabilities 176 Current provisions and liabilities 267 Cash and Cash equivalents 103 AKTI

69. Slide 69: Sto Group P&L HY1/2026

    Sto Group P&L HY1/2026 Improved profitability despite a challenging market environment Information acc. to IFRS. 69 31/08/2026

70. Slide 70: StoGroup Cash Flow Statement HY1/2026

    StoGroup Cash Flow Statement HY1/2026 Cash and cash equivalents at the end of the period above previous year Information acc. to IFRS. 70 31/08/2026

71. Slide 71: StoGroup balance sheet HY1/2026

    StoGroup balance sheet HY1/2026 Comparison of balance sheet as at 30 June 2026 with previous year Information acc. to IFRS. 71 31/08/2026

72. Slide 72: StoGroup balance sheet HY1/2026

    StoGroup balance sheet HY1/2026 Comparison of balance sheet as at 30 June 2026 with previous year Information acc. to IFRS. 72 31/08/2026

73. Slide 73: Sto at a glance

    Presentation for investors 3 Sto at a glance Half-year financial 2025 Annual Consolidated Reportreport interim for for report thethe period from period 1 January from to 30 1 January to June 2026 2026 31 March Consolidated Information 2025 interim Annualabout Reportthereport for the period from 1 Ja

74. Slide 74: Sto Group financial figures Q1/2026

    Sto Group financial figures Q1/2026 Highlights 319 6 EUR million Turnover EUR million Investments* -2% vs. PY -4% vs. PY Increase in seasonally typical 5,510 Q1 deficit compared to same period of the previous Employees year -1% vs. PY Information acc. to IFRS; * without: financial assets and IFRS 16

75. Slide 75: Sto Group financial figures Q1/2026

    Sto Group financial figures Q1/2026 Summary  Sto SE & Co. KGaA: Unfavourable weather conditions and construction downturn at the start of the year impact business development in the first quarter of 2026.  Consolidated turnover decreases by 1.9% to EUR 318.5 million compared to the same period of

76. Slide 76: Sto Group Q1/2026 – Overview

    Sto Group Q1/2026 – Overview Weather conditions and negative developments in the construction sector impact business development Information acc. to IFRS; Rounding of amounts may lead to minor deviations in totals and in the calculation of percentages in this report. 76 31/08/2026

77. Slide 77: Sto Group turnover

    Sto Group turnover Q1/2026: Weather conditions influence negative development in EUR million 368 362 341 325 319 01 - 03 2022 01 - 03 2023 01 - 03 2024 01 - 03 2025 01 - 03 2026 Information acc. to IFRS. 77 31/08/2026

78. Slide 78: Sto Group turnover

    Sto Group turnover Q1/2026: Group segment reporting in EUR Westeuropa Nord-/Osteuropa Amerika/Asien/Pazifik million -1% 249 247 -12% 48 +2% 42 29 29 01 - 03 2025 01 - 03 2026 Information acc. to IFRS. 78 31/08/2026

79. Slide 79: Sto Group turnover

    Sto Group turnover Q1/2026: In Germany -1 %; Outside Germany -3 % in EUR million 217 215 204 201 196 152 147 136 123 122 01 - 03 2022 01 - 03 2023 01 - 03 2024 01 - 03 2025 01 - 03 2026 Information acc. to IFRS. 79 31/08/2026

80. Slide 80: Sto Group employees

    Sto Group employees Q1/2026: Group-wide workforce reduced year-on-year Inland Ausland Sto-Konzern 5,773 5,771 5,804 5,587 5,510 3,148 3,134 3,125 3,067 3,049 2,656 2,646 2,639 2,520 2,461 31.03.2022 31.03.2023 31.03.2024 31.03.2025 31.03.2026 80 31/08/2026

81. Slide 81: Sto Group investments

    Sto Group investments Q1/2026: Investments in further growth in EUR million 6.4 6.0 5.7 5.6 5.5 01 - 03 2022 01 - 03 2023 01 - 03 2024 01 - 03 2025 01 - 03 2026 Information acc. to IFRS; however, without effects from IFRS 16, without investments and depreciation/amortisation of financial assets. 81

82. Slide 82: Sto at a glance

    Presentation for investors 3 Sto at a glance Half-year financial 2025 Annual Consolidated Reportreport interim for for report thethe period from period 1 January from to 30 1 January to June 2026 2026 31 March Consolidated Information 2025 interim Annualabout Reportthereport for the period from 1 Ja

83. Slide 83: Sto Group 2025

    Sto Group 2025 Forecasted turnover and earnings targets achieved About the title image In Zuidas, Amsterdam's fast-growing business district, the project team led by VMX Architects has realised a highly visible urban building block. With 'The Pulse', a perimeter block development with two towers has

84. Slide 84: Sto Group financial figures 2025

    Sto Group financial figures 2025 Highlights 1,591 44 EUR million Turnover EUR million Investments* -1% vs. PY +20% vs. PY 5,482 65 Employees EUR million EBT -2% vs. PY +7% vs. PY Information acc. to IFRS; * without: financial assets and IFRS 16. 84 31/08/2026

85. Slide 85: Sto Group financial figures 2025

    Sto Group financial figures 2025 Summary  Sto Group achieves all forecast figures in 2025 despite persistently difficult general conditions.  Group sales decrease by 1.3% to EUR 1,591.1 million.  Declines in Germany and abroad due to lack of momentum in the construction industry.  Group earnings

86. Slide 86: Sto Group turnover

    Sto Group turnover Difficult market conditions burden the Sto Group's business development in EUR million 1,787 1,718 1,612 1,591 1,591 2021 2022 2023 2024 2025 Information in accordance to IFRS. 86 31/08/2026

87. Slide 87: Sto Group turnover

    Sto Group turnover Share of turnover generated outside of Germany decreased from 59.5 % to 59.4 % in EUR million In Germany Outside Germany 1.026 1.002 959 945 898 762 716 693 654 646 2021 2022 2023 2024 2025 Information in accordance to IFRS. 87 31/08/2026

88. Slide 88: Development of ETICS market in Germany

    Development of ETICS market in Germany 35 36 36 34 34 34 33 30 28 27 26 Million m² 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026f Source: B+L Marktdaten GmbH: Quarterly Report Q4 2025 ETICS. B+L Marktdaten GmbH retroactively updated by B+L. 88 31/08/2026

89. Slide 89: Sto Group turnover

    Sto Group turnover Facade systems still product group with largest share of total Group volume in EUR million Other product groups Other product groups - 233 233 Interior Interior - 241 240 Facade coatings Facade coatings -3% 388 378 Facade systems -1% Facade systems 750 740 2024 2025 Information in

90. Slide 90: Sto Group shares of insulation board sales

    Sto Group shares of insulation board sales* as at 12/2024 as at 12/2025 2% 2% 3% 4% 30% 30% 65% 64% *only associates with ERP SAP, sales basis in m². 90 31/08/2026

91. Slide 91: Shares of insulation board sales Sto SE & Co. KGaA

    Shares of insulation board sales Sto SE & Co. KGaA as at 12/2024 as at 12/2025 2% 2% 4% 5% 37% 38% 57% 55% *Sales basis in m². 91 31/08/2026

92. Slide 92: EBT & EAT Sto Group

    EBT & EAT Sto Group Earnings forecast achieved in EUR million EBT EAT 128 128 127 95 89 86 65 61 39 38 2021 2022 2023 2024 2025 Information in accordance to IFRS. 92 31/08/2026

93. Slide 93: Sto Group employees

    Sto Group employees Group's workforce reduced in 2025 In Germany Outside Germany Sto Group 5,697 5,735 5,783 5,599 5,482 3,130 3,171 3,127 3,067 3,100 2,570 2,612 2,605 2,499 2,415 31.12.2021 31.12.2022 31.12.2023 31.12.2024 31.12.2025 93 31/08/2026

94. Slide 94: Sto Group investments and depreciation/amortisation

    Sto Group investments and depreciation/ amortisation Investments in further growth in EUR million Investments Depreciation/amortisation 47 47 47 44 42 42 42 42 41 36 2021 2022 2023 2024 2025 Information in accordance to IFRS; however, without effects from IFRS 16, without investments and depreciatio

95. Slide 95: Sto Group balance sheet

    Sto Group balance sheet Very solid balance sheet structure as at 31/12/2025, strong equity base 1,163 in EUR 1,163 million Non-current assets Equity capital 533 762 (Equity ratio 66%) Current assets Non-current provisions 515 and liabilities 180 Current provisions and liabilities Cash and cash equiv

96. Slide 96: ROCE Sto Group

    ROCE Sto Group Significant increase due to improved EBIT in % 18.9 17.3 17.1 8.7 7.8 2021 2022 2023 2024 2025 ROCE = EBIT divided by average capital employed Capital employed = balance sheet values are determined on the basis of an arithmetic average of the respective reference date values at month

97. Slide 97: Sto at a glance

    Presentation for investors 3 Sto at a glance Half-year financial 2025 Annual Consolidated Reportreport interim for for report thethe period from period 1 January from to 30 1 January to June 2026 2026 31 March Consolidated Information 2025 interim Annualabout Reportthereport for the period from 1 Ja

98. Slide 98: Sto share

    Sto share Shareholder structure and dividend information Shareholder structure 6% 37% Dividend yield** 57% 5.0% 3.3% 3.6% 4.0% 3.1% 2.7% 3.0% 2.3% 2.0% 1.0% 0.0% 2021 2022 2023 2024 2025 Information based on preference shares; * Dividend + bonus; ** Dividend yields based on the closing price of the

99. Slide 99: Sto share - Share price trend

    Sto share - Share price trend Kursentwicklung 01.01.2025- 26.08.2026 (indexiert zum 30. Dezember 2024 = 100), Xetra Sto Kommanditvorzugsaktien DAX DAXsector Construction (Performance) SDAX 27.12.24 17.01.25 07.02.25 28.02.25 21.03.25 11.04.25 02.05.25 23.05.25 13.06.25 04.07.25 25.07.25 15.08.25 05.

100. Slide 100: Presentation for investors

     Presentation for investors 1 2 3 4 Key financial General figures / Business Forecast and conditions & Information model outlook strategy about the Sto share Disclaimer: Any statements in this presentation that relate to the future correspond to the state of knowledge available at the time when the p

101. Slide 101: Outlook

     Outlook Geopolitical situation  Escalating geopolitical conflicts increase global uncertainty  Burdens on supply chains, energy prices and the investment climate  Increased risks due to tariffs, trade conflicts and sanctions  Negative effects on growth, inflation and financial markets increasing

102. Slide 102: Outlook

     Outlook Significant opportunities and risks Material opportunities  EU Green Deal and climate targets as drivers for energy-efficient building refurbishment  Sto products and systems cut heating costs and reduce CO₂ emissions  An insulated building is essential for the efficient use of heat pumps

103. Slide 103: Outlook

     Outlook Outlook for 2026 as a whole * The forecast is based on average weather conditions and an economic development in line with expectations in Sto's key markets as well as a mainly stable euro exchange rate. The negative impacts that could result from the war between Iran, Israel and the USA des

104. Slide 104: Contact

     Contact Investor Relations Désirée Konrad, Member of the Executive Board of STO Management SE, Finance Contact via: Tel. +49 7744 57 – 1241 E-mail: e.boersig@sto.com 104 31/08/2026

105. Slide 105: Contact

     Contact Investor Relations Roland Schey, Head of Finance and Accounting Contact via: Tel. +49 7744 57 – 1241 E-mail: e.boersig@sto.com 105 31/08/2026

106. Slide 106: Financial calendar 2026

     Outlook Financial calendar 2026 30.04.2026 Electronic publication of the 2025 annual financial statements 08.05.2026 Earnings Call FY 2025 & Q1 2026 08.05.2026 Consolidated interim report first half of 2026 (1st quarter) 18.06.2026 Ordinary General Meeting 31.08.2026 Report on first half-year of 202

107. Slide 107: Thank you for your interest!

     Thank you for your interest! Sto SE & Co. KGaA 31/08/2026 Sto SE & Co. KGaA reception building Design: Wilford Schupp Architekten, Stuttgart, DE Orange Blu, Stuttgart, DE 107

Sto SE & Co. KGaA — Investor Presentation (August 2026) on 6ix