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HOME OF Investor Presentation HY/26 August 2026 CONSTRUCTION
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26.08.2026 I Page 2 Investor Presentation DISCLAIMER • This presentation was prepared by PORR AG (the "Company") solely for use at investors’ meetings and is provided solely for informational purposes. A distribution of this document is not permissible. • This presentation is not, and should not be construed as, a prospectus or offering document, and has not been reviewed or approved by any regulatory or supervisory authority. The information in this presentation does not constitute or form part of, and should not be construed as, an offer for sale or subscription of, or a solicitation or invitation of any offer to subscribe for or purchase any loans or securities of or make an investment in the Company or any other member of the Group or any other entity in any jurisdiction, and nothing contained therein shall form the basis of, or be relied on in connection with, any contract or commitment whatsoever, in particular, it must not be used in making any investment decision • This presentation dates from August 2026. The facts and information contained herein might be subject to revision in the future. Neither the delivery of this presentation nor any further discussions of the Company with any of the recipients shall, under any circumstances, create any implication that there has been no change in the affairs of the Company since such date. None of the Company or any of its subsidiaries or any of its shareholders or any of such person's directors, officers, employees or advisors nor any other person makes any representation or warranty, express or implied as to, and no reliance should be placed on, the accuracy or completeness of the information contained in this presentation. None of the Company or any of its subsidiaries or any of its shareholders or any of such person's directors, officers, employees and advisors nor any other person shall have any liability whatsoever for any loss howsoever arising, directly or indirectly, from any use of this presentation. The same applies to information contained in other material made available at such investor’s meetings. • This presentation is selective in nature and is intended to provide an introduction to, and overview of, the business of the Company. Wherever external sources are quoted in this presentation, such external information or statistics should not be interpreted as having been adopted or endorsed by the Company as being accurate. • This presentation contains forward-looking statements relating to the business, financial performance and results of the Company and/or the industry in which the Company operates. These statements generally are identified by words such as "believes", "expects", "predicts", "intends", "projects", "plans", "estimates", "aims", "foresees", "anticipates", "targets", and similar expressions. The forward-looking statements, including but not limited to assumptions, opinions and views of the Company or information from third party sources, contained in this presentation are based on current plans, estimates, assumptions and projections and involve uncertainties and risks. Various factors could cause actual future results, performance or events to differ materially from those described in these statements. The Company does not represent or guarantee that the assumptions underlying such forward-looking statements are free from errors nor do the Company or any of its subsidiaries or any of their directors, officers, employees and advisors nor any other person accept any responsibility for the future accuracy of the opinions expressed in this presentation. No obligation is assumed to update any forward-looking statements. • The Company does not expect or intend to register any securities that it may offer under the U.S. Securities Act of 1933, as amended (the "Securities Act"), or to conduct a public offering of any securities in the United States, and the securities of the Company have not been and will not be registered under the Securities Act and any such securities may not be offered or sold in the United States absent registration under the Securities Act or an available exemption from it. There will be no public offer of securities in the United States. Neither this document nor any copy of it may be taken or transmitted into the United States, Australia, Canada or Japan or to any securities analyst or other person in any of those jurisdictions. Any failure to comply with these restrictions may constitute a violation of United States, Canadian, Australian or Japanese securities laws. This document is also not for publication, release or distribution in any other jurisdiction where to do so would constitute a violation of the relevant laws of such jurisdiction nor should it be taken or transmitted into such jurisdiction and persons into whose possession this document comes should inform themselves about and observe any such restrictions. • The Information is only addressed to and directed at persons in member states of the European Economic Area (each a "Relevant State") who are "qualified investors" within the meaning of Article 2(e) of Regulation (EU) 2017/1129 ("Qualified Investors"). In addition, the Information is being distributed only to, and is directed only at, persons in the United Kingdom who are "qualified investors " within the meaning of the Prospectus Regulation (Regulation (EU) 2017/1129), as it forms part of domestic law in the United Kingdom by virtue of the European Union (Withdrawal) Act 2018 who are (i) "investment professionals" within the meaning of Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the "Order"); (ii) high net worth entities to whom it may otherwise lawfully be communicated falling within Article 49(2)(a) to (d) of the Order, or (iii) persons to whom an invitation or inducement to engage in investment activity (within the meaning of section 21 of the Financial Services and Markets Act 200 0) in connection with the issue or sale of any securities of the Company or any member of its group may otherwise lawfully be communicated or caused to be communicated (all such entities and persons together, "Relevant Persons"). The information must not be acted on or relied on (i) in the United Kingdom, by persons who are not Relevant Persons, and (ii) in any Relevant State, by persons who are not Qualified Investors. • This document is also not for publication, release or distribution in any other jurisdiction where to do so would constitute a violation of the relevant laws of such jurisdiction nor should it be taken or transmitted into such jurisdiction and persons into whose possession this document comes should inform themselves about and observe any such restrictions. By attending such meeting and/or accessing or reading a copy of this Presentation you agree to be bound by the foregoing limitations and conditions and, in particular, will be taken to have represented, warranted and undertaken that (i) you have read, accept and agree to comply with the contents of this notice including, without limitation, the obligation to keep the information in this Presentation confidential and (ii) (A) if in a Relevant Member State you are a “qualified investor”; (B) if in the United Kingdom you are a “relevant person”; and (C) if in the United States, you are a qualified institutional buyer as defined in Rule 144A under the Securities Act, or (D) irrespective of where you are resident or incorporated, you are an institution that is permitted within your home jurisdiction and in the jurisdiction in which you are accessing the information in this Presentation, under applicable law and regulation, to access the information in this Presentation.
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26.08.2026 I Page 3 Further expansion in construction Building construction and Germany gaining momentum1 2 3 Order pipeline: continued growth Double-digit increase in AT & DE Several new big orders after cut-off date Revenue acceleration Strong recovery after harsh winter Expected growth based on increase in order pipeline Earnings increase on track +15.6% EBIT due to efficient cost management +34.0% EPS Net debt and cash flow Investments in M&A and financial assets Temporary cash conversion delay due to long winter Outlook 2026 Increase in output & revenue of 2% - 4% EBIT margin: 3.2% - 3.3% 4 5 6 Investor Presentation HY/26 AT A GLANCE
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26.08.2026 I Page 4 163.8 119.5 100.0 42.7 32.3 1.2 Source: EUROCONSTRUCT, June 2026; European Commission – Economic Forecast of Poland, Romania, Czechia and Slovakia Investor Presentation Annual construction growth rates (in %) BUILDING CONSTRUCTION AND GERMANY GAINING MOMENTUM 2026 infrastructure investments in PL & CEE (in EUR bn) 2.4% 2.2% 1.9% 2026e 2027e 2028e ▪ Strong volume uplift in civil engineering due to high infrastructure investments ▪ Rebound in residential construction to peak in 2027 ▪ Increasing growth in building construction driven by healthcare, education & logistics ▪ Germany: Infrastructure Future Act to accelerate planning and approvals ▪ Austria: Major investment programmes in transport, housing and RRF implementation ▪ Poland & CEE: Strong infrastructure investment supported by national budgets, EU funds and RRF FURTHER EXPANSION IN CONSTRUCTION Residential construction Other building construction Civil engineering Total construction output 3.6% 3.5% 3.1% 2026e 2027e 2028e Euroconstruct-19 Euroconstruct-CEE
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26.08.2026 I Page 5 H2/24 & H1/25 H2/25 & H1/26 Investor Presentation Order intake (in EUR m) SEVERAL NEW BIG ORDERS AFTER CUT-OFF DATE New orders in July and August & pipeline ORDERPIPELINE: CONTINUED GROWTH ▪ Double-digit increase in AT / CH (+15%) and DE (+17%) ▪ Turnaround in building construction clearly visible U5 underground station Frankfurt, Germany 7,659 53% 27% 9% 10% 7,231 + 650 Rounding differences may appear. 60% 23% 7%11% •G-CAP 3yrs framework agreement EUR 270m •High-margin industrial and other building construction project EUR 200m •Further building construction projects EUR 200m expected in Sept/Oct •Infrastructure pipeline start in Oct. EUR 1.5 bn Poland •Infrastructure construction projects of EUR 180m •Ongoing tenders of EUR 4.5 bn, top chances for EUR 400-500m •Top-listed for road construction project of EUR 550m to be signed with new governmentRomania Germany
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26.08.2026 I Page 6 Investor Presentation TOP ORDER INTAKES FIGURES IN EUR Non-residential construction Residential construction OtherCivil engineering • LK108 Railway Jasło – Nowy Zagórz PL / 214.9m • Rehabilitation of contaminated site N53 Angern/March / AT / 89.2m • LK104 Railway Rabka Zaryte - Fornale PL / 95.1m • Vifor Windfarm Phase II Buzău / RO / 77.0m • Railway reconstruction Plzeň - Chotěšov CZ / 82.0m Q3/25 • App. Building Kladno Living CZ / 42.8m • Tunnel chain Katschberg AT / 38.8m • App. Building Ujezd Praha / CZ / 27.2m Q4/25 • ARGE Kachlet waterway Lock Passau / DE / 115.6m • Incineration plant ITPO Wloclawek / PL / 119.1m • Road extension DK 25: Konin - Rychwał PL / 73.2m • ARGE Fehmarn Sound crossing Fehmarn / DE / 66.0m • App. Building LIL-Y twins Vienna / AT / 45.2m • Bridge DW281 Pomorsko / PL / 43.3m • Motorway S6, section 1: Kołbaskowo - Dołuje PL / 149.7m Q1/26 • X-Factory Fab4Micro Erfurt / DE / n.a. • Mixed-use building Holzmarktstraße 51 Berlin / DE / 86.0m • Munition Storage Area Powidz / PL / 85.9m • Swift/Apple structural works Munich / DE / 48.9m • App. Building Seestädter – G11 Vienna / AT/ 46.2m Q2/26
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26.08.2026 I Page 7 HY/25 HY/26 ▪ Improvements in nearly all operational segments ▪ Increase of 21% in AT / CH & 12% in DE ▪ Double-digit increase based on additional contracts in July and August Investor Presentation FULL ORDER BOOKS STRONG BACKBONE AT / CH Rounding differences may appear. Order backlog (in EUR m) Oradea Ring Road Romania 7% 8%6% 27% 58% 9,839 + 6509,421 +4.4% 27% 61% 8%5% New orders July and August EUR ~650m
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26.08.2026 I Page 8 HY/2025 HY/2026 Investor Presentation REVENUE ACCELERATION SET FOR FURTHER GROWTH Rounding differences may appear. Revenue (in EUR m) Bochnia northern bypass Poland ▪ Strong winter led to output reduction in building construction of 2.6% ▪ Increase in civil engineering of 7.2% ▪ Further increase expected from high order backlog 2,9252,959
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26.08.2026 I Page 9 Investor Presentation Energy prices (indexed per Dec. 2020) 100 125 150 175 200 225 250 Jan. 21 Jan. 22 Jan. 23 Jan. 24 Jan. 25 Jan. 26 Bitumen Steel Concrete ▪ Track record of successful management of price increases through Ukraine conflict ▪ Early procurement and hedging together with price escalation clauses to secure margins ▪ No material bottlenecks SUPPLY AND INPUT COST SECURITY MATERIALS FIXED AND ENERGY PRICES HEDGED 100 200 300 400 500 600 Jan. 21 Jan. 22 Jan. 23 Jan. 24 Jan. 25 Jan. 26 Industrial gas Diesel Electricity ▪ Gas and electricity (prices) fixed by framework agreements up to 2027/28, 90% of gas secured until 2030 (commodity swaps) ▪ Diesel consumption monitored and hedged on a quarterly basis ▪ War-driven material cost increase under control Construction input costs (indexed per Dec. 2020) Source: DESTATIS – Statistisches Bundesamt Germany, Genesis database
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26.08.2026 I Page 10 34.1 42.2 48.7 56.3 HY/23 HY/24 HY/25 HY/26 1.2% 1.5% 1.6% 1.9% ▪ Successful cost management and efficiency gains ▪ Inflationary increase in personnel expenses coming from collective bargaining agreements ▪ One-off gain in at-equity (EUR 6.4m) nearly equals one-off expense in depreciation (EUR 7.4m) ON TRACK EARNINGS INCREASE EBIT (in EUR m) EBIT (in % from revenue) Investor Presentation Luegbrücke Austria
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26.08.2026 I Page 11 682,169 800,667 788,704 2024 HY/25 2025 HY/26 Hybrid capital Investor Presentation STABLE EQUITY INCREASED FREE FLOAT Equity (in EUR m), equity ratio (in %) and hybrid share (in %) Airport Otopeni, Romania 21.1% 20.0% 21.1% 20.0% ▪ +11% absolute increase y-o-y due to higher earnings ▪ Further uplift in free float: +4% of share capital to 56.6% 894 855 964 946 24% 18% 17% 17%
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26.08.2026 I Page 12 Rounding differences may appear. Investor Presentation Net debt (in EURm) Cash Flow from Operations (in EURm) Free Cash Flow (in EURm) NET DEBT AND CASH FLOW INVESTMENTS IN M&A AND FINANCIAL ASSETS ▪ Increased investments due to − Higher M&A activities (e.g. rhtb Group) EUR ~39m − ubm hybrid bond EUR 56.4m − Increased CAPEX (TBM) EUR ~20m ▪ IFRS 16 debt: EUR 227m 224 327 302 461 283 243 239 115 227 HY/23 HY/24 HY/25 HY/26 Base net debt (cash) IFRS 16 - Long-term office rentals Investments HY/26 ▪ Delayed cash conversion due to harsh winter leading to higher working capital usage ▪ EUR 56.4m investment in ubm hybrid capital as PORR LIVING distribution partner: interest income of 9.0% p.a. ▪ FY CAPEX ratio: ~4.5% -85 -67 -101 -258 276 375 378 2023 2024 2025 2026 HY FY 119 -59 84 63
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26.08.2026 I Page 13 26.08.2026 I Page 13 Investor Presentation OUTLOOK Growth in revenue and output of 2% - 4% EBIT margin 2026: 3.2% - 3.3% EBIT margin 2030: 3.5% - 4.0%