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Porr AG

Interim / Quarterly Report Aug 21, 2025

755_ir_2025-08-21_dce247f7-80c5-4c94-8278-16413c4f540d.pdf

Interim / Quarterly Report

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C O N S T R U C T I O N IN MOTION HALF-YEAR REPORT 2025

HOME OF CONSTRUCTION

KE Y DATA

Operating data

in EUR m 1–6/2025 1–6/2024 Change
Production output1 3,171 3,116 1.8%
Foreign share 54.4% 55.2% -0.8 PP
Order backlog 9,421 8,564 10.0%
Order intake 4,049 3,228 25.4%
Staffing level (average) 20,651 20,823 -0.8%

Earnings indicators

in EUR m 1–6/2025 1–6/2024 Change
Revenue 2,959.2 2,907.8 1.8%
EBITDA 153.4 148.1 3.6%
EBIT 48.7 42.2 15.5%
EBT 38.8 34.8 11.7%
Profit/loss for the period 29.4 27.5 7.0%
Earnings per share (in EUR) 0.53 0.45 17.8%

Financial position indicators

in EUR m 30.06.2025 31.12.2024 Change 30.06.2024
Total assets 4,271 4,240 0.7% 4,175
Equity (incl. non-controlling interests) 855 894 -4.4% 811
Equity ratio 20.0% 21.1% -1.1 PP 19.4%
Net debt 301 -2 < -100.0% 327

Cash flow and investments

in EUR m 1–6/2025 1–6/2024 Change
Cash flow from operating activities -100.7 -67.3 49.7%
Cash flow from investing activities -96.0 -163.6 -41.3%
Cash flow from financing activities -76.5 -136.8 -44.1%
CAPEX2 122.4 183.0 -33.2%
Depreciation/amortisation/impairment 104.7 106.0 -1.2%

Key data regarding shares

in EUR m 30.06.2025 31.12.2024 Change 30.06.2024
Number of shares 39,278,250 39,278,250 - 39,278,250
Market capitalisation 1,107.6 696.8 59.0% 549.9

1 The production output corresponds to the output of all companies and consortiums (fully consolidated, equity method, proportional or those of minor significance) in line with the interest held by PORR AG.

2 Investments in property, plant and equipment and intangible assets

The figures have been rounded off using the compensated summation method. Absolute changes are calculated using the rounded values, relative changes (in percent) are derived from the non-rounded values.

CONTENTS

GROUP MANAGEMENT REPORT

INTERIM CONSOLIDATED FINANCIAL STATEMENTS AS OF 30 JUNE 2025

Dear shareholders and stakeholders,

PORR further improved its strong performance in the first half of 2025: New orders increased by more than a quarter, the order backlog grew by 10.0%, and production output reached a top level of EUR 3,171m. This is a clear validation of our chosen course.

We have a wide range of exciting projects to look forward to. These include major new railway construction contracts in Poland, Romania and the Czech Republic, as well as the Insel Gartenfeld comprehensive school in Germany and numerous other projects in industrial and healthcare construction both in Austria and abroad. Civil engineering, with its large-scale infrastructure contracts, continues to be the driving force of the industry. And this trend is set to persist, as can be seen from the many investment programmes in our home markets. At the same time, the breadth of our order pipeline demonstrates a renewed strengthening of building construction in its many forms.

A positive picture is also seen in our bottom line: Once again, PORR was able to reduce its expenses for other purchased services, with a clear focus on in-house performance. EBIT rose by 15.5% to EUR 48.7m, reflecting the positive overall growth. Earnings per share also improved by 17.8% to EUR 0.53.

And so, we can look to the second half of the year with confidence and anticipation. I would like to take this opportunity to thank you for your loyalty and the trust you continue to place in PORR on this journey.

August 2025, Vienna

Karl-Heinz Strauss Chairman of the Executive Board and CEO

Josef-Dieter Deix Member of the Executive Board and COO

Klemens Eiter Member of the Executive Board and CFO

Claude-Patrick Jeutter Member of the Executive Board and COO

HIGHLIGHTS

Railway: Major contract in Romania

With a contract value of around EUR 425m, this is one of the most important railway infrastructure projects in Romania. It also happens to be PORR's largest new contract in the first half of 2025: PORR is building, renovating and modernising tracks, tunnels, bridges, culverts and stations between Craiova and Caransebeș as part of a design & build contract. This will bring the line up to the highest European standards, while reducing journey times and increasing transport capacities.

Energy: High pressure for greater stability

To enable liquefied natural gas to be transported from a floating LNG terminal to the interior of the country, PORR is building a high-pressure natural gas pipeline between Kolnik and Gdansk in Poland. It will be 34 kilometres long, have a diameter of one metre and pass through five towns. The project has a contract value of EUR 90.5m and is making an important contribution to strengthening and stabilising Poland's energy infrastructure and Europe's as well. GAZ-SYSTEM has long relied on PORR's expertise, whereby more than 300 kilometres of pipelines have already been built in close cooperation.

ESG: To Build a Better World

With its comprehensive ESG strategy, PORR has developed an ambitious and data-based roadmap for greater sustainability along the entire value chain. The strategy is divided into eight key action fields: Decarbonisation, Circular Economy, Biodiversity, Sustainable Supply Chain, Health & Safety, Equal Opportunities, Anti-corruption and Compliance. There are 18 measurable targets and 55 concrete measures. By 2030, for example, Scope 1 and Scope 2 emissions are set to be reduced by 43% and Scope 3 emissions by 25%.

PORR ON THE STOCK EXCHANGE

Strong markets despite subdued economy

The first half of 2025 continued to be marked by economic uncertainty and geopolitical tensions. The robust US economy contrasted with subdued economic growth in Europe. In view of the ongoing inflation risks and a resilient labour market, the US Federal Reserve (Fed) postponed its planned interest rate cuts and kept its key interest rate unchanged at 4.25% to 4.50%.

The European economy remained stable overall in the first half of the year, although it continued to be affected by geopolitical tensions and uncertainties surrounding trade policy. Inflation fell to 2.0% in June, approaching the European Central Bank's (ECB) target. The ECB responded by lowering its key interest rate by 0.25% to 2.00%. This is intended to support the domestic economy and further reduce financing costs for businesses and households. Despite these thoroughly positive stimuli, growth remains subdued. The International Monetary Fund has forecast economic growth of 0.8% for the eurozone in 2025.

The stock markets also experienced uneven growth in the first half of 2025. Unrealised expectations of further interest rate cuts dampened sentiment, especially in the US. The Dow Jones Industrial Average rose by only 3.6% by the end of June, although it did recover after a weak start to the year. The stock markets in Europe saw a much more dynamic performance. The EURO STOXX 50 recorded a gain of 8.3%, while the German benchmark index DAX 40 rose by a whopping 20.1%. The Austrian benchmark index ATX improved by 20.9%. The strong performance of the European indices was boosted in particular by extensive infrastructure and defence packages and the ECB's monetary easing. In Germany, the economic stimulus package acted as an economic driver, while in Austria high dividend yields bolstered the ATX.

PORR share continues to rise

The PORR share continued its clearly positive trend in the first half of 2025. It had already recorded its lowest level for the year to date on 9 January at EUR 17.76. In the following months, the

Share price and trading volume of the PORR share in the first half of 2025 (Index)

share price had an extremely positive performance, reaching its highest level in the reporting period on 2 May at EUR 31.95. In addition to the encouraging company results for the 2024 financial year, this is also attributable to the increased trading volume resulting from the high level of interest in infrastructure stocks. The announcement of the sale of PORR AG's treasury shares slightly dampened the positive growth at the end of May. On the reporting date of 30 June 2025, the closing price was EUR 28.20, an increase of 59.0% compared to the end of the previous year. The market capitalisation was EUR 1.1 bn on the reporting date. The average daily trading volume quadrupled compared to the same period last year and amounted to 82,441 shares on the Vienna Stock Exchange in the first half of 2025.

Share buyback programme completed

On 4 April 2025, PORR completed its share buyback programme launched in 2024. A total of 701,614 bearer shares were bought back at a weighted average price of EUR 21.36 since 11 October 2024.

Together with the shares already acquired at an earlier date, PORR thereby held 1,703,674 treasury shares at an average purchase price of EUR 17.27. This corresponded to 4.3% of the share capital.

Sale of treasury shares

On 17 June 2025, PORR AG sold all 1,703,674 of its treasury shares in an accelerated bookbuilding process. The shares were successfully placed with international institutional investors. The sale price per share was EUR 26.50, generating gross proceeds of EUR 45.1m.

The transaction strengthens the company's capital structure and will be used to expand its infrastructure business in Europe, particularly in Germany, Poland and the CEE countries.

Increase in international free float

The Strauss Group, part of the syndicate with the IGO Industries Group, sold 1,175,000 shares on 18 June 2025. The sale of the shares by SuP Beteiligungs GmbH (SuP) – which is attributable to Karl-Heinz Strauss, CEO of PORR AG – reduced the proportion of syndicated shares held by SuP to around 11.4%. In addition, this transaction increases the free float of PORR shares, which further supports both liquidity and trading volumes as well as enhances the chance of inclusion in the Austrian benchmark index ATX.

Overall, the proportion of the share capital held by the syndicate has now fallen to 47.4%. The increase in free float to 52.6% further enhances PORR's attractiveness on the capital market. According to an internal analysis, the free float is distributed primarily across the USA with 17.3% and Austria with 9.5%. In addition, German investors hold 8.1%, while 6.5% of the free float is held in the UK. 11.6% is distributed across the rest of Europe. Retail investors account for 27.6% of the total free float.

GROUP IN MOTION

Production output by market (in EUR m)

GROUP

IN MOTION

Number of employees by market (Average)

Earnings before interest and taxes (EBIT) (in EUR m)

Equity ratio

(in %)

All figures have been rounded off using the compensated summation method.

Absolute changes are calculated using the rounded values, relative changes (in percent) are derived from the non-rounded values.

MARKETS & PERFORMANCE

Economic environment

Stabilisation continues

The global economy continues to be characterised by high uncertainty and mixed growth prospects. According to the OECD, global growth will slip back to 2.9%, which represents a significant slowdown compared to the previous year. The International Monetary Fund (IMF) has also revised its forecast downwards and expects lower growth of 2.8% for 2025. The main causes are escalating trade conflicts, particularly due to US tariffs, and increasing geopolitical tensions, for example between Israel and Iran. Central banks continue to act with caution. The first interest-rate cuts have been made, but monetary policy easing is proceeding more slowly than expected. This combination is dampening investment appetite and consumer sentiment.

The US economy is under pressure as the import tariffs imposed in the spring are weighing on industry while consumer goods prices are rising. GDP shrank by 0.5% in the first quarter, and the Bureau of Economic Analysis (BEA) expects growth of 1.4% for the year as a whole. The Fed has so far refrained from cutting interest rates and has left the key interest rate unchanged at 4.25% to 4.50%.

Economic growth in the eurozone is equally mixed. While the service sector picked up slightly after a weak start to the year, the situation in the manufacturing sector remained tense. Inflation nevertheless rose slightly to 2.0% in June. The ECB responded with an interest rate cut in March, bringing the key interest rate to 2.0%. The Institute for Advanced Studies (IHS) expects GDP growth of 0.9% for 2025. Forecasts assume a slight acceleration in economic activity in the second half of the year. This will be supported by rising consumer demand, stable employment and continued monetary policy support.

The Austrian economy stabilised in the first half of the year but remained on a subdued growth path overall. According to the IHS and the Austrian National Bank (OeNB), real GDP growth of 0.1% is expected for the year as a whole. Continued weak investment activity is weighing on industry, while the service sector is proving to be a stabilising factor.

Despite higher real incomes, households remain cautious about consumer spending. The high savings rate and uncertainty about economic developments are leading to subdued demand. Inflation has stabilised at around 2.9% after declining in the previous year. Household energy and services remain the main drivers of inflation, with inflation rising slightly again due to the expiry of government price controls and increased network charges. The protectionist trade policy of the USA continues to dampen export prospects. According to IHS and OeNB, a noticeable economic recovery is not expected before 2026.

In Germany, there are initial signs of a trend reversal. After two years of stagnation, the ifo Institute and the Kiel Institute for the World Economy expect GDP growth of 0.3% for 2025 as a whole. Economic momentum remains subdued due to continued weakness in international trade and the export industry. Despite the challenges, declining inflation and the robust employment situation are providing positive impetus. The new federal government under Chancellor Merz has announced extensive fiscal measures, including a EUR 500 billion infrastructure fund to promote investment in the medium term.

In PORR's Eastern European home markets – Poland, Romania the Czech Republic and Slovakia – the positive trend continued, although the pace of growth slowed slightly compared to the previous year. Supported by rising real wages, consumer spending remained a key growth driver. Declining inflation rates enabled monetary policy easing, which provided additional support for investment and consumption. GDP growth of 3.5% is expected in Poland and 1.9% in the Czech Republic. Romania and Slovakia and are developing more modestly, with forecast growth rates of 1.4% and 1.5% respectively.

Construction sector remains divided

The European construction industry showed initial signs of stabilisation in the first half of 2025, but the overall performance fell short of expectations. Following a sharp decline of 2.4% in the previous year, moderate growth of 0.6% in production volume is forecast for the year as a whole. Growth continues to be uneven across the various segments and countries.

New residential construction remains under pressure, stagnating in the first half of 2025. In non-residential building construction, however, such as healthcare, education and commercial buildings, positive momentum is evident. Public investment and tax incentives are supporting demand for renovation and modernisation but cannot fully make up for the weak level of new construction activity.

While restraint continues to dominate in building construction, civil engineering is proving to be a reliable growth driver. Real growth of 2.5% is expected for 2025 as a whole. Robust demand is resulting from investments in transport networks, energy infrastructure and digital services – supported by EU subsidies and national investment programmes. Projects in the areas of railway construction, power grids and water management are seeing particularly dynamic growth. The German special fund and the investment plans of the Austrian infrastructure operators ASFINAG and ÖBB are making an important contribution to this.

Development of output

The indicator production output includes traditional design, planning and construction services as well as services from landfill operations and raw material sales and therefore all of PORR's key services. For fully consolidated companies, this output corresponds approximately to the revenue defined and reported in accordance with IFRS. In contrast to revenue, production output also includes the output from joint ventures and companies accounted for using the equity method and subordinate companies in line with the interest held by the Group. Differences in definitions are reconciled pursuant to commercial criteria.

PORR's production output in the first half of 2025 amounted to EUR 3,171m, up by 1.8% against the comparable figure for the previous year. The areas of large-scale building construction and tunnel construction performed particularly well.

PORR continues to focus on its seven home markets, which contributed a total of 98.4% of its output. Austria remains the most important market, accounting for 45.6% of total output. Germany and Poland accounted for 27.6% and 13.1% respectively. While Romania contributed 5.3% to production output, the Czech Republic and Slovakia together accounted for 4.8%. 2.0% of output was generated in Switzerland.

Order balance

The order backlog as of 30 June 2025 stood at EUR 9,421m. Compared to the previous year, this represents an increase of 10.0%, which is primarily due to growth in transport infrastructure construction across all home markets – Poland and the CEE countries in particular. Compared to 31 December 2024, the order backlog also increased by EUR 878m.

The order intake rose significantly by 25.4% and amounted to EUR 4,049m as of the reporting date. This clear increase is attributable to growth in the infrastructure sector in CEE on the one hand and to the first new building construction contracts in Germany on the other.

In the first half of 2025, PORR won a number of significant new contracts, enjoying particular success in the infrastructure sector. Accordingly, it generated its largest new order for the reporting period in Romanian railway construction. PORR is responsible for the renovation and modernisation of the Craiova – Drobeta Turnu Severin – Caransebeș railway line as part of a design & build contract. In Poland, PORR is building the country's longest high-speed railway tunnel to date near the city of Łódź, while in Germany it has been commissioned to build the Insel Gartenfeld comprehensive school in Berlin, among other projects. In industrial construction, PORR received several follow-up contracts, including from renowned clients in Alzey and Munich, and it continues to be in high demand in healthcare construction, particularly in Poland and Austria. The first major residential construction contracts have already come in once again in Vienna and Berlin.

Staff

PORR employed around 20,651 staff members in the first half of 2025. The slight decrease of 0.8% is due to the successive withdrawal from the project markets Norway and Qatar, amongst other factors.

Financial performance

The construction industry is subject to seasonal fluctuations typical for the sector. The first half of the year usually shows weaker earnings due to lower construction output in the winter months. It therefore allows only limited conclusions to be drawn about the financial year as a whole.

In the first half of 2025, the PORR Group's revenue amounted to EUR 2,959.2m , representing an increase of 1.8% compared to the previous year. Income from companies accounted for using the equity method increased by EUR 13.3m to EUR 32.1m due to higher earnings transfers from consortiums.

The cost of materials and other purchased services rose more slowly overall than revenue, increasing by EUR 11.9m to EUR 1,941.4m . While the cost of materials increased by 6.4% to EUR 622.4m – with this item's share of revenue rising by 0.9 PP to 21.0% – expenses for purchased services fell by 1.9% to EUR 1,319.0m . The share of revenue they account for thereby declined by 1.7 PP to 44.6% .

As a result of the increase in output, particularly in civil engineering, where a higher share of own personnel is used, and the inflation-related adjustment of salaries, staff expenses rose by 7.7% to EUR 802.1m . The share of revenue they account for rose by 1.5 PP to 27.1% . Overall, own construction costs (total of material and staff expenses) increased by 7.2% to EUR 1,424.5m .

Other operating income rose by EUR 4.5m to EUR 94.8m , primarily due to higher charges passed on to joint ventures. Savings were achieved in other operating expenses, which fell by 2.2% to EUR 192.7m due to changes in the project structure.

The increase in output, together with absolute savings in other purchased services and the rise in earnings from companies accounted for using the equity method, led to a 3.6% improvement in EBITDA to EUR 153.4m . Depreciation, amortisation and impairment expense decreased slightly by 1.2% compared to the first half of 2024. EBIT thereby rose by 15.5% to EUR 48.7m . The EBIT margin in relation to revenue rose by 0.2 PP to 1.6%.

The lower interest income led to a reduction in the financial result (sum of income from financial investments, other current financial assets and finance costs), which decreased to EUR -9.9m (1-6/2024: EUR -7.4m ). This resulted in an 11.7% improvement in EBT to EUR 38.8m (1-6/2024: EUR 34.8m).

Although the tax result of EUR -9.4m was below the comparable figure for the previous year (1-6/2024: EUR -7.3m ), the profit for the period improved by 7.0% to EUR 29.4m . Earnings per share were EUR 0.53 , 17.8% higher than the previous year's figure (1-6/2024: EUR 0.45 ).

Financial position

PORR's total assets amounted to EUR 4,270.8m as of 30 June 2025, only slightly above the figure at the end of the previous year (31 December 2024: EUR 4,239.7m).

On the one hand, non-current assets increased by 2.3% . This is attributable to factors such as an increase in companies accounted for using the equity method – not least due to the firsttime consolidation of Knape Bahnbau GmbH. On the other hand, current assets slipped back slightly by 0.4% , mainly due to the seasonal decline in cash and cash equivalents as well as the use of advance payments in other receivables and assets. In contrast, trade receivables increased to EUR 1,844.3m (30 June 2024: EUR 1,783.2m).

Equity decreased by 4.4% to EUR 854.5m , mainly due to the repayment of the 2020 hybrid bond in February 2025 with a nominal value of EUR 46.5m. At the same time, the dividend payout and the share buyback also had a negative impact in the first half of the year. This was offset by the sale of treasury shares with gross proceeds of EUR 45.1m. As a result, the equity ratio as of 30 June 2025 was 20.0% – an increase of 0.6 PP compared to the same date last year (30 June 2024: 19.4%).

Liabilities increased by 2.1% to EUR 3,416.3m . This is mainly due to the seasonal increase in trade payables. In contrast, the use of advance payments received and tax payments had an offsetting effect on current liabilities.

Net debt amounted to EUR 301.3m as of 30 June 2025. Compared to the same date last year, this represents a welcome reduction of 7.9% (30 June 2024: EUR 327.2m), despite further small company acquisitions like Knape Bahnbau GmbH, the hybrid capital redemption, as well as the programmes to buy back and sell treasury shares. If the aforementioned one-off effects were applied, this would result in an operating improvement of 16.0%.

Cash flows

Operating cash flow improved by EUR 114.1m year-on-year to EUR 138.9m . Cash flow from working capital showed higher funds tied up in the form of an increase in receivables due to the kick-off of the construction season. In addition, compared to the same date last year, there was less financing through trade payables and higher capital tied up in inventories. This led to a reduction of EUR 33.4m in cash flow from operating activities, which stood at EUR -100.7m .

Cash flow from investing activities improved significantly by EUR 67.6m to EUR -96.0m (1–6/2024: EUR -163.6m), as the comparative period in the previous year included substantial cash outflows for the acquisition of the Pannonia Group and the Waggershauser Group. In the current reporting period, EUR 12.8m relates to the partial acquisition of Knape Bahnbau GmbH. This effect was further enhanced by lower investment activity.

Cash flow from financing activities reflected, among other things, the repayment of hybrid capital with a nominal amount of EUR 46.5m, the purchase and subsequent sale of treasury shares with total inflows of EUR 32.9m, and dividend payments of EUR 48.9m. Nevertheless, it improved by 44.1% to EUR -76.5m .

Overall, cash and cash equivalents decreased by EUR 275.6m to EUR 307.5m as of 30 June 2025 (31 December 2024: EUR 583.2m). Compared to the previous year's figure, an increase of EUR 51.3m was achieved (30 June 2024: EUR 256.3m). The liquidity reserve remained at a high level of EUR 752.9m.

Investments

Investment activity is measured by applying the CAPEX indicator (capital expenditure). This includes investments in intangible assets, property, plant and equipment, plants under construction and usage rights.

In the first half of 2025, investments in both replacement and new construction equipment were made, as well as a major investment in a flash butt-welding machine. CAPEX decreased by EUR 60.7m compared with the same period of the previous year to EUR 122.4m. This resulted in a CAPEX ratio in relation to production output of 3.9% (1–6/2024: 5.9%). For the full year, a CAPEX ratio of around 4% is still expected.

FORECAST REPORT

The global economy remains robust at the middle of 2025, albeit with regional differences. The IMF is maintaining its global growth forecast of 3.3%. The eurozone, on the other hand, is under the influence of geopolitical tensions and an increasingly protectionist US trade policy. The IMF has therefore revised its US growth forecast downwards to 0.8%. The ECB is responding to these challenges with positive stimuli in the form of monetary easing. After a total of four interest rate cuts since the start of the year, the European key interest rate currently stands at 2.0%. Inflation is also close to the ECB's target of 2.0%.

The European construction industry is experiencing a structural transformation. The four Ds (deglobalisation, decarbonisation, digitalisation and demographic change) continue to shape long-term development. Civil engineering is benefiting in particular from EUfunded infrastructure projects, especially in the areas of railway and road construction and energy supply. Building construction is supported by demand for social housing, educational facilities and industrial buildings. Digitalisation and the boom in artificial intelligence are leading to rising demand for data centres, while the energy transition is driving forward the construction of power lines and power plants.

As of 30 June 2025, PORR's order backlog stood at EUR 9.4 bn. Particularly in civil engineering, which accounts for 60.6% of the order backlog, PORR's extremely broad service portfolio speaks for itself. The focus is on offering all services along the construction value chain from a single source. In residential construction, which accounts for a comparatively small share of 7.6%, the current focus is on the final development and patent application for modular construction. Non-residential building construction accounts for 26.6%. The recent new follow-up contracts from existing clients underscore PORR's longstanding partnerships with well-known industrial companies. However, the significant increase in orders received in the first half of 2025 of 10.0% is not expected to take effect until 2026 and lead to further improvements in performance.

Based on the order backlog, which has continued to rise and now stands at EUR 9.4 bn, the Executive Board continues to anticipate a moderate increase in output and revenue for 2025, as well as an EBIT margin of 2.8% to 3.0%. The target for 2030 is an EBIT margin of 3.5% to 4.0%.

The assessment of how the business will perform is based on the general conditions in the individual areas as well as the opportunities and risks that arise in the respective markets. Should the high-risk political situation worsen, this could have a negative impact on PORR and its business activities. Any assessment of economic development is therefore subject to forecasting risks.

Opportunity and Risk Management

Active risk management is an integral part of responsible corporate management at PORR and safeguards the company's competitiveness long term. Should risks have an impact on one of PORR's business fields or markets, this could have a negative effect on the company's earnings, the environment and PORR's stakeholders.

The outstanding issues relating to the termination of the H51 Pfons–Brenner project – a section of the Brenner Base Tunnel (BBT) – were fully settled out of court during the second quarter of 2025. Since the Annual and Sustainability Report 2024, there have been no other significant changes to the opportunity/risk profile from which new or changed risks for PORR can be derived. So, the description in the Risk Report of the Annual and Sustainability Report 2024 from page 172 onwards remains valid.

Events After the End of the Reporting Period

In August 2025, bonded loans (Schuldscheindarlehen) were refinanced ahead of schedule on a long-term basis: On 15 August 2025, bonded loans amounting to EUR 115.5m were redeemed. On 18 August 2025, new bonded loan tranches with maturities of 5 and 7 years and a total volume of EUR 161m were issued.

SEGMENT REPORT

Production output per segment

Order backlog per segment (in EUR m)

Order intake per segment

(in EUR m)

(in EUR m)

Number of staff per segment (average)

As of 30 June 2025, industrial construction Germany and the design-build contractor unit, which mainly comprises German projects, were reclassified from the segment AT / CH to the segment DE. At the same time, building construction for Eastern Switzerland was moved to the segment Holding. The comparative figures have not been adjusted.

Segment AT / CH

The segment AT / CH combines country responsibilities for the two home markets of Austria and Eastern Switzerland, where PORR is represented with its full range of services. In addition to the permanent business – with a focus on road, industrial and residential construction – the national competencies in railway and pipeline construction, environmental engineering and specialist civil engineering are bundled in this segment.

Key data

in EUR m 1-6/2025 1-6/2024 Change
Production output 1,361 1,554 -12.4%
Revenue 1,176.2 1,388.1 -15.3%
EBIT 43.9 34.0 29.1%
Order backlog 2,778 3,448 -19.4%
Order intake 1,595 1,843 -13.5%
Average staffing levels 9,686 10,443 -7.2%

Segment performance

The segment AT / CH achieved production output of EUR 1,361m in the first half of 2025. A large part (EUR 185m) of the decline of 12.4% is attributable to the reclassification out of this segment of industrial construction Germany and the design-build contractor division as well as building construction for Eastern Switzerland. When this factor is accounted for, the output of the original segment remained largely at the previous year's level. Parallel to the change in output, revenue also decreased by 15.3% to EUR 1,176.2m. The EBIT of the segment AT / CH was EUR 43.9m, which was clearly above the previous year's figure. This is primarily due to improved performance in Austria. On the other hand, last year's earnings were burdened by the costs of winding up building construction for Eastern Switzerland. The EBIT margin in relation to revenue stood at 3.7% (1-6/2024: 2.5%).

The order backlog for the segment AT / CH decreased by 19.4% to EUR 2,778m. A share of EUR 796m is attributable to areas reclassified out of this segment – including industrial construction Germany and the design-build contractor division. In the Austrian part of the segment, which remains in place, the order backlog rose by 5.5%. The order intake also saw a reduction and amounted to EUR 1,595m, down by 13.5% on the figure for the previous year. Here EUR 104m is attributable to the reclassification.

The largest new order in this segment was the project to build the Nord E3 residential complex in Vienna. In addition, the segment AT / CH was awarded two contracts in the healthcare infrastructure sector: The first appoints PORR as the design-build contractor for the construction of a data centre for the General Accident Insurance Institution. Secondly, PORR, together with a partner, was awarded the contract for the building construction and technical fit-out with sustainable energy concepts for the MIA healthcare centre Liesing in Vienna. Other important project wins were achieved in infrastructure construction, including installing the patented Slab Track Austria rail system in the Semmering Base Tunnel.

Market performance

In the first half of 2025, the Austrian construction industry recovered slightly. While building construction stagnated compared to the previous year, civil engineering managed to grow. Production volumes rose by 2.6% compared to the previous year. This continues the stabilisation that has been driven by investments in infrastructure and targeted stimulus measures.

The initial effects of government policy are also becoming apparent. Despite consolidation measures, the ÖBB's framework plan for the period 2025-2030 still amounts to EUR 19.7 bn. Overall, the sustainable focus of civil engineering, particularly in the areas of renewable energies and network infrastructure, remains a stable driver of demand. The motorway operator ASFINAG continues to invest over EUR 1.0 bn annually in the maintenance and expansion of the Austrian motorway network.

Building construction has stabilised slightly compared to the previous year. Residential construction continues to gain momentum thanks to the housing and construction package worth EUR 1.0 bn. According to Statistics Austria, building permits rose to around 15,000 units in the first quarter of 2025 – an increase of 11.4% compared to the previous year. In addition, the construction of healthcare properties also increased. Several federal provinces are investing in the expansion and modernisation of hospitals, care facilities and health centres. The industrial construction sector is also reporting increased expansion. The demand for data centres continues to rise, especially in the Vienna and Linz areas. Increasing digitalisation and requirements for national data sovereignty are leading to investments in new locations and the expansion of existing facilities.

In Switzerland, construction activity remained stable at a high level in the first half of 2025. In addition, civil engineering is showing the first signs of positive momentum. The Swiss National Bank's reduction of the key interest rate to 0.0% improved financing conditions and is expected to stimulate investment activity from the second half of the year onwards.

Segment DE

The segment DE represents a significant share of PORR activities in Germany. Here the company is involved in traffic infrastructure and foundation engineering in particular. Specifically in specialist civil engineering, PORR covers the entire construction value chain – from design to build – and is thereby one of the few specialists in this field.

Key data

in EUR m 1-6/2025 1-6/2024 Change
Production output 801 454 76.3%
Revenue 816.9 457.0 78.7%
EBIT 4.2 2.7 59.3%
Order backlog 1,891 1,305 44.9%
Order intake 730 422 72.9%
Average staffing levels 3,087 2,329 32.5%

Segment performance

Production output in the segment DE showed a significant increase of 76.3% to EUR 801m, of which EUR 187m is attributable to the reclassification of industrial construction Germany and the design-build contractor division into this segment. Revenue also rose significantly by 78.7% to EUR 816.9m. The segment DE generated an increase in EBIT to EUR 4.2m. The improvement is mainly attributable to the industrial construction segment. The EBIT margin in relation to revenue was 0.5% (1-6/2024: 0.6%), whereby the slight decline was mainly caused by the weak market situation prevailing in Germany.

Industrial construction in Germany and the design-build contractor division, including major German building construction projects, showed an increase of EUR 562m. For the part of the segment DE previously recognised here, the order backlog remained almost at the previous year's level. The order intake increased by 72.9% to EUR 730m. In addition to the EUR 117m from the reclassification of industrial construction and major German building construction projects, this increase is primarily due to growth in infrastructure building construction, including schools.

The segment DE won the third-largest new contract of the first half of 2025; this involves the construction of the Insel Gartenfeld comprehensive school. Other significant new contracts came from the hotel and residential construction sectors as well as from industrial construction, where PORR received orders including follow-up contracts in Alzey and Munich. In transport infrastructure construction, the segment DE, together with a partner, won lot VE734 of the 2nd S-Bahn core line near Munich.

Market performance

The German construction industry was split in two in the first half of 2025. While building construction suffered from structural pressures, civil engineering remained a stable growth driver. According to Zentralverband Deutsches Baugewerbe, a 2.5% decline in revenue is expected for 2025 as a whole. In contrast, the order intake in the main construction sector had risen slightly by 1.6% by May, driven in particular by momentum in commercial civil engineering and public infrastructure projects.

The situation in building construction remained tense in the first half of 2025. According to Hauptverband der Deutschen Bauindustrie, the number of building permits for residential construction fell by 12.4% to around 150,000 units. The difficult financing environment and high construction costs continue to weigh on demand. Nevertheless, there were some positive developments: Construction activity stabilised in commercial building construction, particularly in industrial construction such as data centres, logistics facilities and laboratory buildings. The need for digital infrastructure is leading to investments in new data centre locations, especially in the Frankfurt/Rhine-Main and Berlin-Brandenburg regions. In healthcare construction, projects to expand and modernise clinics and care facilities are also being implemented. EY-Parthenon expects a stabilisation in the second half of the year. Falling construction prices and the interest rate cut by the ECB are creating an increasingly favourable investment environment.

Civil engineering continues to be robust. Investments in power lines, rail networks and broadband infrastructure are ensuring stable demand. Deutsche Bahn is pushing ahead with the complete overhaul of heavily used routes, while the German government's infrastructure fund offers long-term planning security. Real revenue growth of 0.8% is expected for civil engineering. Public construction activity in road construction, on the other hand, remains subdued. The federal government's provisional budget management is delaying new projects, so that production-related stimulus is not expected until 2026 at the earliest. Investment activity at Autobahn GmbH was also severely restricted in the first half of 2025. Although measures that have already been awarded will continue, production-related impacts are not expected here until 2026 at the earliest. The federal government has applied for EUR 450m in the short term for the renovation of dilapidated motorway bridges, with a further EUR 709m to follow.

Segment PL

The segment PL encompasses the entire country responsibility for the home market of Poland and integrates all Polish shareholdings, including Stump-Franki. In civil engineering, PORR's focus is on infrastructure construction, whereby in addition to road and bridge construction, the range of services also includes railway and power plant construction as well as hydraulic engineering. In building construction, PORR is active in Poland in the fields of residential and office construction, as well as building hospitals, hotels, educational institutions and industrial facilities, in addition to public-sector construction.

Key data

in EUR m 1-6/2025 1-6/2024 Change
Production output 423 458 -7.6%
Revenue 399.4 463.5 -13.8%
EBIT 11.0 8.3 33.7%
Order backlog 1,797 1,506 19.3%
Order intake 564 579 -2.6%
Average staffing levels 2,478 2,526 -1.9%

Segment performance

The segment PL generated production output of EUR 423m. This corresponds to a temporary decline of 7.6%, which is attributable to project delays in the areas of building construction and infrastructure construction. However, significant output increases are expected for the year as a whole. Revenue showed a decrease of 13.8% to EUR 399.4m. The segment PL generated EBIT of EUR 11.0m. Compared to the previous year, this represents a strong increase of 33.7%, resulting mainly from improvements in the operating performance. The EBIT margin in relation to revenue was 2.8% (1-6/2024: 1.8%).

The 19.3% increase in the order backlog to EUR 1,797m is mainly due to the areas of industrial construction and infrastructure. The order intake declined due to the high figure of the previous year by 2.6% to EUR 564m. The positive development in the second quarter was not quite able to offset the first quarter of this year. Here as well, clear improvements are expected for the year as a whole.

In June, PORR was awarded the contract to build Poland's longest railway tunnel, with a length of 4.6 kilometres, in Łódź, a project that falls within the scope of the planned central airport (CPK). The project will be implemented using the Slab Track Austria system and stands as a technological milestone in Polish tunnel construction. In addition, PORR received further contracts in Polish tunnel construction, including the LK 356 railway line between Wagrowiec and Golancz. The segment PL also recorded significant new orders in road, water and healthcare infrastructure construction. Additional large-scale contracts in the railway construction sector are currently expected for the third quarter.

Market performance

The production volume of the Polish construction industry rose by 1.9%. Euroconstruct forecasts growth of 4.9% for the year as a whole, driven primarily by civil engineering.

Residential construction continues to show the first signs of recovery, supported by the 'Mieszkanie na start' stimulus programme and government grants for loan repayments. The number of building permits rose slightly year-on-year. At the same time, public building construction moved up the agenda: Investments in health infrastructure and educational facilities are ensuring stable demand. Industrial construction is also seeing positive growth, especially in logistics and production areas, where modular construction methods are increasingly being used.

Civil engineering remains the key growth driver. The government investment programmes of national road and railway operators GDDKiA and PKP PLK are still underway: In the first half of 2025, GDDKiA already opened six new road sections to traffic with a total length of 51 kilometres and a volume of around EUR 1.5 bn. A further 75 kilometres are under construction, including sections of the A2, S7 and DK10. Tenders worth around EUR 13.5 bn are planned for the year as a whole.

Poland's railway infrastructure is also undergoing massive expansion. PKP PLK is investing around EUR 3.6 bn in the modernisation and expansion of the network in 2025.

Segment CEE

The segment CEE is responsible for the home markets of Romania, the Czech Republic and Slovakia and integrates all local shareholdings. In the Czech Republic and Slovakia, PORR offers a comprehensive range of services on a permanent basis, including both civil engineering and building construction. In Romania, PORR is primarily active in civil engineering with its entire product portfolio.

Key data

in EUR m 1-6/2025 1-6/2024 Change
Production output 284 398 -28.6%
Revenue 302.6 388.4 -22.1%
EBIT 5.5 11.4 -51.4%
Order backlog 1,301 711 83.0%
Order intake 698 261 > 100.0%
Average staffing levels 2,906 3,203 -9.3%

Segment performance

The production output of the segment CEE amounted to EUR 284m. The decline of 28.6% is due to the completion of several major projects in Romania. New projects are currently only in the initial phase and therefore generate lower output contributions by comparison. In parallel, revenue in the segment also declined by 22.1% to EUR 302.6m. EBIT decreased to EUR 5.5m. This is mainly attributable to the temporarily lower output which goes hand in hand with a lower coverage of fixed costs. The EBIT margin in relation to revenue was 1.8% (1-6/2024: 2.9%).

Both the order backlog and the order intake of the segment CEE showed significant growth in the first half of 2025. The order backlog increased by 83.0% to EUR 1,301m. The order intake more than doubled to EUR 698m; several new large-scale projects in Romania and the Czech Republic are behind this growth.

The most significant project is the renovation and modernisation of the railway line between Craiova and Caransebeș in south-western Romania. In addition, the segment CEE was awarded the contract to modernise the railway section between Nezamyslice and Kojetín in the Olomouc region of the Czech Republic.

Market performance

According to the latest forecasts from Euroconstruct and the Eastern European Construction Forecasting Association (EECFA), the PORR Group's CEE home markets can still expect stagnation in construction output for the full year 2025. Supported by EU funding from the NextGenerationEU budget and the Recovery and Resilience Facility, civil engineering remains the industry's main pillar. In building construction, the picture is mixed – although the first positive signals are emerging.

In Romania, civil engineering remains the main growth driver. Major road and railway projects – including the planned doubling of the national expressway network from 1,000 to 2,000 kilometres – are providing strong positive momentum. Construction output in May thus rose by 4.0% year-on-year.

In the Czech Republic, an increase in construction output is expected, particularly in transport infrastructure. Construction output in May rose by 11.6% compared with the previous year – one of the highest growth rates in the EU. Regulations on the energy efficiency of existing buildings are also boosting demand for renovation and modernisation. A more favourable interest-rate environment and positive economic prospects are leading to higher expectations in both residential and non-residential building construction.

In Slovakia, alongside civil engineering, non-residential building construction is also showing stable growth. Investments in the healthcare and agricultural sectors are generating additional demand. The turnaround in the housing sector is being aided by falling land prices and improved financing conditions.

Segment Infrastructure International

The segment Infrastructure International mainly consists of PORR's expertise in international tunnelling. The Slab Track International department is also based here. Responsibility for the project markets in the United Kingdom (UK), Norway and Qatar and for international projects is bundled here as well. PORR has evaluated the markets in Norway and Qatar and will not be accepting any new contracts in these countries. However, the countries will remain as project markets until all outstanding projects have been completed and the relevant warranty periods have expired.

Key data

in EUR m 1-6/2025 1-6/2024 Change
Production output 260 218 19.6%
Revenue 233.3 158.0 47.6%
EBIT 0.7 -2.2 < -100.0%
Order backlog 1,508 1,540 -2.1%
Order intake 452 128 > 100.0%
Average staffing levels 1,114 1,139 -2.2%

Segment performance

The production output of the segment International Infrastructure totalled EUR 260m. The 19.6% increase resulted from the tunnelling sector, where major projects entered the build phase, as well as from the completion of works in project markets. Accordingly, revenue also increased by 47.6% to EUR 233.3m. Compared to the previous year, the number of companies accounted for using the equity method was reduced, which is why the increase in revenue is significantly higher than the growth in output. The EBIT of the segment International Infrastructure increased to EUR 0.7m (1-6/2024: EUR -2.2m). This figure is particularly impacted by the settlement costs for the project market of Qatar. The EBIT margin in relation to revenue turned positive at 0.7% (1–6/2024: -1.0%).

The order backlog fell slightly by 2.1% to EUR 1,508m. This is mainly due to steadily working off major projects. The order intake amounted to EUR 452m. This growth of more than double the volume resulted from increased participation in tenders.

Key orders in the first half of the year included major tunnelling projects in which the segment International Infrastructure supports the segments PL and CEE. These include the Craiova– Caransebeș railway line in Romania and the railway tunnel in Łódź, Poland.

Market performance

The Trans-European Transport Network (TEN-T) continues to ensure a solid project pipeline, particularly in tunnelling. EU funding from the Connecting Europe Facility – transport programme, the Recovery and Resilience Facility and the InvestEU fund safeguards the awarding of projects. Priorities include north–south corridors such as the Brenner Corridor, Rail Baltica and the European Rail Traffic Management System (ERTMS) corridors.

In international tunnelling, several large-scale projects in Europe and Asia continued, including new metro sections, railway tunnels, and underground utility pipelines. Positive momentum is also expected in the area of infrastructure renovation.

PORR's construction activity focuses on technically demanding projects with high value to society. Emphasis is placed on quality, sustainability and digital management. PORR pursues international market opportunities selectively, with a clear focus on its home markets.

INTERIM CONSOLIDATED FINANCIAL STATEMENTS AS OF 30 JUNE 2025

20 Consolidated Income Statement

INTERIM

AS OF

FINANCIAL

CONSOLIDATED

STATEMENTS

30 JUNE 2025

CONSOLIDATED INCOME STATEMENT

in TEUR 1–6/2025 1–6/2024 4–6/2025 4–6/2024
Revenue 2,959,207 2,907,756 1,694,392 1,632,157
Own work capitalised in non-current assets 3,546 2,258 2,008 1,301
Income from companies accounted for under the equity method 32,052 18,771 15,214 6,978
Other operating income 94,807 90,262 53,785 52,074
Cost of materials and other related production services -1,941,406 -1,929,492 -1,129,100 -1,096,932
Employee benefits expense -802,085 -744,427 -438,313 -409,894
Other operating expenses -192,724 -197,004 -109,427 -97,773
Earnings before interests, tax, depreciation and amortisation (EBITDA) 153,397 148,124 88,559 87,911
Depreciation, amortisation and impairment expense -104,698 -105,959 -52,479 -57,046
Earnings before interests and tax (EBIT) 48,699 42,165 36,080 30,865
Income from financial investments and other current financial assets 11,519 14,104 4,781 5,820
Finance costs -21,392 -21,504 -9,050 -9,927
Earnings before tax (EBT) 38,826 34,765 31,811 26,758
Income tax expense -9,449 -7,306 -7,420 -5,250
Profit for the period 29,377 27,459 24,391 21,508
of which attributable to shareholders of the parent 20,220 17,115 19,555 16,067
of which attributable to holders of profit
participation rights/hybrid capital
7,046 8,156 3,545 4,158
of which attributable to non-controlling interests 2,111 2,188 1,291 1,283
Basic earnings per share, total (in EUR) 0.53 0.45 0.52 0.42
Diluted earnings per share, total (in EUR) 0.53 0.45 0.52 0.42

STATEMENT OF COMPREHENSIVE INCOME

in TEUR 1–6/2025 1–6/2024 4–6/2025 4–6/2024 Revenue 2,959,207 2,907,756 1,694,392 1,632,157 Own work capitalised in non-current assets 3,546 2,258 2,008 1,301 Income from companies accounted for under the equity method 32,052 18,771 15,214 6,978 Other operating income 94,807 90,262 53,785 52,074 Cost of materials and other related production services -1,941,406 -1,929,492 -1,129,100 -1,096,932 Employee benefits expense -802,085 -744,427 -438,313 -409,894 Other operating expenses -192,724 -197,004 -109,427 -97,773 Earnings before interests, tax, depreciation and amortisation (EBITDA) 153,397 148,124 88,559 87,911 Depreciation, amortisation and impairment expense -104,698 -105,959 -52,479 -57,046 Earnings before interests and tax (EBIT) 48,699 42,165 36,080 30,865 Income from financial investments and other current financial assets 11,519 14,104 4,781 5,820 Finance costs -21,392 -21,504 -9,050 -9,927 Earnings before tax (EBT) 38,826 34,765 31,811 26,758 Income tax expense -9,449 -7,306 -7,420 -5,250

INCOME STATEMENT

CONSOLIDATED

Profit for the period 29,377 27,459 24,391 21,508 of which attributable to shareholders of the parent 20,220 17,115 19,555 16,067

Basic earnings per share, total (in EUR) 0.53 0.45 0.52 0.42 Diluted earnings per share, total (in EUR) 0.53 0.45 0.52 0.42

participation rights/hybrid capital 7,046 8,156 3,545 4,158 of which attributable to non-controlling interests 2,111 2,188 1,291 1,283

of which attributable to holders of profit-

in TEUR 1–6/2025 1–6/2024 4–6/2025 4–6/2024
Profit for the period 29,377 27,459 24,391 21,508
Other comprehensive income
Remeasurement of defined benefit obligations 1,434 552 -2,117 -24
Income tax on other comprehensive income -286 -153 502 -5
Items which cannot be reclassified to profit or loss (non-recyclable) 1,148 399 -1,615 -29
Differences from currency translation -7,776 -330 -7,188 2,380
Net loss/gain from cash flow hedges
in the reporting period -258 1,386 -232 616
Income tax on other comprehensive income 59 -319 53 -142
Items which can subsequently be reclassified to profit or loss
(recyclable)
-7,975 737 -7,367 2,854
Other comprehensive income -6,827 1,136 -8,982 2,825
Total comprehensive income for the period 22,550 28,595 15,409 24,333
of which attributable to shareholders of the parent 13,471 18,213 10,696 18,892
of which attributable to holders of profit
participation rights/hybrid capital
7,046 8,156 3,545 4,158
of which attributable to non-controlling interests 2,033 2,226 1,168 1,283

CONSOLIDATED CASH FLOW STATEMENT

in TEUR 1–6/2025 1–6/2024
Profit for the period 29,377 27,459
Depreciation, impairment and reversals of impairment on fixed assets and financial assets 104,689 105,969
Interest income/expense 9,969 7,655
Income from companies accounted for under the equity method -4,141 -1,624
Dividends from companies accounted for under the equity method 5,227 2,376
Profits from the disposal of fixed assets -9,712 -10,756
Decrease in long-term provisions -1,762 -3,548
Current income tax expense 9,318 7,287
Income taxes paid -4,234 -20,760
Deferred income tax expense 131 19
Cash flow from profit 138,862 114,077
Increase in current provisions 20,864 44,504
Increase/decrease in inventories -16,237 4,237
Increase in receivables -253,776 -265,930
Increase in payables 23,045 44,885
Interest received 9,273 11,391
Interest paid -17,625 -15,989
Other non-cash transactions -5,088 -4,435
Cash flow from operating activities -100,682 -67,260
Proceeds from sale of property, plant and equipment and disposal of investment property 18,009 14,745
Proceeds from the sale of financial investments 25 -
Proceeds from repayment of loans 1,017 1,353
Payments for investments in intangible assets -6,388 -6,319
Payments for investments in property, plant and equipment and investment property -80,298 -143,485
Payments for investments in financial investments -13,210 -6,907
Payments for investments in loans -15,223 -1,193
Proceeds from the sale of consolidated companies less cash and cash equivalents 57 1,551
Proceeds from/Payouts for the purchase of subsidiaries less cash and cash equivalents 25 -23,324
Cash flow from investing activities -95,986 -163,579
Paid dividends and interest from profit-participation rights/hybrid capital -48,892 -40,013
Payouts to non-controlling interests -70 -928
Acquisition of treasury shares -11,325 -
Sale of treasury shares 44,233 -
Proceeds from hybrid capital - 133,334
Repayment of profit-participation rights/hybrid capital -46,450 -174,325
Repayment of lease financing -37,993 -45,188
Proceeds from loans and other financing 48,281 26,150
Repayment of loans and other financing -24,277 -35,781
Cash flow from financing activities -76,493 -136,751
Cash flow from operating activities -100,682 -67,260
Cash flow from investing activities -95,986 -163,579
Cash flow from financing activities -76,493 -136,751
Change to cash and cash equivalents -273,161 -367,590
Cash and cash equivalents as of 1 Jan 583,165 631,342
Currency differences -2,467 1,485
Changes to cash and cash equivalents resulting from changes to the consolidated group - -8,984
Cash and cash equivalents as of 30 Jun 307,537 256,253

CONSOLIDATED STAT EMEN T OF FINANCIAL POSITION

Assets
Non-current assets
Intangible assets
225,024
221,743
215,018
Property, plant and equipment
1,279,382
1,269,238
1,251,943
Investment property
34,996
36,392
37,960
Shareholdings in companies accounted for under the equity method
92,077
82,394
81,686
Other financial investments
2,607
2,662
2,672
Other financial assets
116,997
99,017
56,990
Deferred tax assets
32,370
31,612
37,603
1,783,453
1,743,058
1,683,872
Current assets
Inventories
118,161
101,922
115,004
Trade receivables
1,844,318
1,521,935
1,783,233
Other financial assets
150,727
160,488
182,098
Other receivables and current assets
66,576
129,088
153,443
Cash and cash equivalents
307,537
583,165
256,253
Non-current assets held for sale
-
-
850
2,487,319
2,496,598
2,490,881
Total assets
4,270,772
4,239,656
4,174,753
Equity and liabilities
Equity
Share capital
39,278
39,278
39,278
Capital reserve
370,942
358,833
358,833
Hybrid capital
157,773
211,831
204,818
Other reserves
256,668
256,371
180,798
Equity attributable to shareholders of parent
824,661
866,313
783,727
Non-controlling interests
29,855
27,940
26,891
854,516
894,253
810,618
Non-current liabilities
Provisions
138,792
138,218
148,272
Lease liabilities
317,396
318,748
319,819
Financial liabilities
173,055
191,005
193,992
Other financial liabilities
5,676
6,275
6,405
Deferred tax liabilities
33,019
32,116
39,033
667,938
686,362
707,521
Current liabilities
Provisions
438,309
417,165
374,365
Lease liabilities
69,070
67,803
62,996
Financial liabilities
49,593
7,560
6,943
Trade payables
1,338,969
1,180,881
1,419,476
Other financial liabilities
37,328
24,493
36,131
Other liabilities
784,268
931,296
724,478
Tax payables
30,781
29,843
32,225
2,748,318
2,659,041
2,656,614
Total equity and liabilities
4,270,772
4,239,656
4,174,753
in TEUR 30.6.2025 31.12.2024 30.6.2024

STATEMENT OF CHANGES IN GROUP EQUITY

Reserve for
remeasurement
Capital Revaluation of defined Valuation of equity
in TEUR Share capital reserve reserve benefit obligations instruments
Balance as of 1 Jan 2024 39,278 358,833 18,390 -39,260 180
Total profit for the period - - - - -
Other comprehensive income - - - 402 -
Total income for the period - - - 402 -
Dividend payout - - - - -
Profit-participation rights/hybrid capital - - - - -
Income tax on interest for holders of
profit-participation rights/hybrid capital
- - - - -
Share-based payments - - - - -
Changes to the consolidated group/acquisition of
non-controlling interests
- - - - -
Balance as of 30 Jun 2024 39,278 358,833 18,390 -38,858 180
Balance as of 1 Jan 2025 39,278 358,833 22,263 -38,554 180
Total profit for the period - - - - -
Other comprehensive income - - - 1,148 -
Total income for the period - - - 1,148 -
Dividend payout - - - - -
Hybrid capital - - - - -
Income tax on interest of holders of
hybrid capital
- - - - -
Sale of treasury shares - 12,109 - - -
Acquisition of treasury shares - - - - -
Share-based payments - - - - -
Balance as of 30 Jun 2025
Total Non-controlling
interests
Equity
attributable to
shareholders
of parent
Retained
earnings and
non-retained
profit
Profit-participa
tion rights/
hybrid capital
Reserve for cash
flow hedges
Foreign currency
translation reserves
860,245 25,289 834,956 199,374 247,525 -271 10,907
27,459 2,188 25,271 17,115 8,156 - -
1,136 38 1,098 -2 - 1,067 -369
28,595 2,226 26,369 17,113 8,156 1,067 -369
-41,011 -998 -40,013 -28,707 -11,306 - -
-40,608 - -40,608 -1,051 -39,557 - -
2,445 - 2,445 2,445 - - -
578 - 578 578 - - -
374 374 - - - - -
810,618 26,891 783,727 189,752 204,818 796 10,538
894,253 27,940 866,313 258,042 211,831 -1,520 15,960
29,377 2,111 27,266 20,220 7,046 - -
-6,827 -78 -6,749 -6 - -199 -7,692
22,550 2,033 20,517 20,214 7,046 -199 -7,692
-49,010 -118 -48,892 -33,817 -15,075 - -
- -46,450 -421 -46,029 - -
- 3,467 3,467 - - -
-46,450
3,467
40,824
- 40,824 28,715 - - -
-11,325 - -11,325 -11,325 - - -
- 207 207 - - -
29,855 824,661 265,082 157,773 -1,719 8,268

NOTES TO THE INTERIM CONSOL- IDATED F IN A NCI A L STATEMENTS AS OF 30 JUNE 2025

1. General Information

The PORR Group consists of PORR AG and its subsidiaries. PORR AG is a public limited company according to Austrian law and has its registered head office at Absberggasse 47, 1100 Vienna, Austria. The company is registered with the commercial court of Vienna under reference number FN 34853f. The Group deals mainly with the planning and execution of a whole range of building construction activities.

The interim consolidated financial statements of the PORR Group have been prepared in accordance with IAS 34, Interim Financial Reporting in compliance with the International Financial Reporting Standards (IFRS) issued by the International Accounting Standards Board (IASB) and adopted by the European Union, the interpretations of the International Financial Reporting Interpretations Committee (IFRIC) and the standards to be applied for the first time from 1 January 2025. The effects of the first-time application of the new standards are presented in note 3.

In accordance with IAS 34, the interim consolidated financial statements do not contain all the disclosures required in the annual financial statements. Therefore, these interim consolidated financial statements should be read in conjunction with the consolidated financial statements of the PORR Group as of 31 December 2024. The consolidated results of the interim financial statements according to IAS 34 are not necessarily indicative of the annual results.

The euro is the reporting currency as well as the functional currency of PORR AG and the majority of its subsidiaries included in these interim consolidated financial statements.

2. Consolidated group and acquisitions

6/2025 2024
137 128
-1 -
- -3
-1 -2
- -2
1 3
1 -
- 13
137 137
70 70
67 67

74% of the shares in one company were sold, whereby the assets and liabilities over which control was lost are not material.

The following companies were fully consolidated for the first time in these interim financial statements.

Date of initial
Due to new foundations consolidation
PORR Energiegemeinschaft 1.1.2025

No material assets and liabilities were included in this context.

Date of initial
Due to first-time consolidation consolidation
PPE GmbH 1.4.2025

PPE GmbH is a shelf company that has now commenced business operations, which was classified as immaterial up to the date of its initial consolidation. The assets recognised for the first time as of the reporting date are not material.

With the transfer agreement dated 26 May 2025, effective with the closing dated 23 July 2025, Weber Holding Tirol GmbH transferred all of its shares and interests of limited partners held in CBL City Beton Logistik GmbH and CBL City Beton Logistik GmbH & Co KG to PORR Mischanlagen GmbH.

With a purchase agreement dated 21 December 2024, effective with the closing dated 25 March 2025, PORR Bau GmbH acquired 74.97% of the shares in Knape Bahnbau GmbH at a purchase price of TEUR 13,820. Due to the corporate governance agreements, joint control exists and therefore the entity is accounted for using the equity method.

A total of 64 (previous year: 62) domestic and 39 (previous year: 38) foreign associated companies and joint ventures were included under application of the equity method.

3. Accounting policies and measurement methods

The accounting policies and measurement methods applied in the consolidated financial statements as of 31 December 2024, which are presented in the notes to the consolidated annual financial statements, have been applied unchanged to the interim consolidated financial statements with the exception of the following standards and interpretations applied for the first time, whereby their first-time application has not had a material impact on the Group:

Date of Date of
publication adoption into Date of entry
New standard or amendment by IASB EU law into force
Amendments to IAS 21 Lack of Exchangeability 15.8.2023 12.11.2024 1.1.2025

The following standards and interpretations have been published since the preparation of the consolidated financial statements as of 31 December 2024 but are not yet mandatory or have not yet been adopted into law by the European Union.

STANDARDS AND INTERPRETATIONS ALREADY ADOPTED BY THE EUROPEAN UNION

New standard or amendment Date of
publication
by IASB
Date of
adoption into
EU law
Date of entry
into force
Amendments to IFRS 7 and IFRS 9 Classification and Measurement of
Financial Instruments
30.5.2024 27.5.2025 1.1.2026
Annual Improvements Volume 11 Amendments to IFRS 1, IFRS 7, IFRS 9,
IFRS 10 and IAS 7
18.7.2024 9.7.2025 1.1.2026
Amendments to IFRS 9 and IFRS 7 Contracts Referencing Nature-depend
ent Electricity
18.12.2024 30.6.2025 1.1.2026

STANDARDS AND INTERPRETATIONS NOT YET ADOPTED BY THE EUROPEAN UNION

Date of Date of entry
publication into force acc.
New standard or amendment by IASB to IASB
IFRS 18 Presentation and Disclosure in Financial Statements 9.4.2023 1.1.2027
IFRS 19 Subsidiaries without Public Accountability: Disclosures 9.5.2024 1.1.2027

The new standard IFRS 18 on the presentation and disclosure of financial statements replaces the previous IAS 1 from 1 January 2027. The main changes include the introduction of predefined subtotals, the categorisation of income and expenses in the income statement and of certain items in the cash flow statement, as well as the introduction of disclosures on certain performance measures defined by management. The application of IFRS 18 will have an impact on the structure and the presentation in the consolidated income statement and the consolidated cash flow statement; the changes are currently under evaluation. No material impact is expected from the other amendments to standards and interpretations not yet adopted.

The interim consolidated financial statements as of 30 June 2025 use the same consolidation methods and basis for currency translation as were used in the annual financial statements as of 31 December 2024.

4. Sources of estimation uncertainty

Preparing interim consolidated financial statements in accordance with IFRS Accounting Standards requires management to make estimates and assumptions that affect the amount and disclosure of assets and liabilities in the statement of financial position, income and expense, as well as entries regarding contingent liabilities in the interim report. Actual results may deviate from these estimates.

5. Seasonal influence in the construction sector, climate change, and macroeconomic and geopolitical backdrop

In comparison to other industry sectors, the construction industry experiences seasonal variations with regard to revenue and earnings due to weather-related factors. Revenue and earnings are, as a rule, lower in the winter months than in the summer months. As a result of the fixed costs that exist, earnings are lower in the first half of the year than in the second. These seasonal fluctuations are less pronounced in building construction than in civil engineering and road construction.

There has been no material change in the environmental and climate-related effects on the net assets, financial position and financial performance since 31 December 2024. An analysis of the risks in connection with environmental and climate protection in the first half of the year did not lead to the identification of any obligations requiring recognition or contingent liabilities requiring disclosure that are not already taken into account in these interim consolidated financial statements.

The geopolitical and macroeconomic environment remained tense in the first half of 2025. Any potential impacts on the PORR Group from the resulting uncertainties are constantly monitored. Current risks from the geopolitical and macroeconomic situation that would lead to a probable outflow of resources due to uncertain obligations from past events were taken into account when recognising liabilities and provisions. An analysis revealed no indications of potential impairment of assets, goodwill, or deferred tax assets on tax loss carryforwards as of 30 June 2025. To mitigate the risk of rising prices, proactive hedging measures are in place, for example, the price hedging of gas through derivative contracts concluded with banks. Overall, no material changes arose in the first half of the year.

6. Revenue

1-6/2025 Infrastruc
ture Inter
in TEUR AT / CH DE PL CEE national Holding Group
Revenue
Building construction
Commercial/office construction 19,158 243,016 6,977 2,710 - 186 272,047
Industrial engineering 85,978 133,310 77,040 17,905 - - 314,233
Miscellaneous building
construction
186,428 101,098 61,471 14,751 - 6,004 369,752
Residential construction 173,221 55,923 2,583 26,826 - 3,631 262,184
Civil engineering
Railway construction 103,839 10,383 71,779 10,526 11,968 - 208,495
Bridge/overpass construction 32,365 16,280 3,287 9,178 12,269 - 73,379
Miscellaneous civil engineering 250,038 110,870 55,612 19,970 1,837 126 438,453
Road construction 159,714 91,811 120,650 195,733 - - 567,908
Tunnelling 11,864 21,053 - - 207,264 - 240,181
Other sectors 153,575 33,137 34 4,990 - 20,839 212,575
Revenue 1,176,180 816,881 399,433 302,589 233,338 30,786 2,959,207
Revenue recognised over time 1,098,924 812,986 397,184 302,329 233,338 30,786 2,875,547
Revenue recognised at a point of time 77,256 3,895 2,249 260 - - 83,660
Infrastruc
ture Inter
AT / CH DE PL CEE national Holding Group
96,168 17,384 78,006 2,161 - - 193,719
165,057 8,284 52,892 28,644 - - 254,877
169,655 151,674 9,610 11,422 - - 342,361
180,078 47,272 17,457 28,540 - 31,568 304,915
121,793 14,953 79,256 27,491 24,448 - 267,941
46,387 25,906 18,517 20,086 16,344 - 127,240
238,332 97,010 67,600 23,857 190 303 427,292
200,810 73,695 131,857 244,776 4,556 - 655,694
6,548 12,956 8,240 - 110,631 - 138,375
163,301 7,895 25 1,426 1,880 20,815 195,342
1,388,129 457,029 463,460 388,403 158,049 52,686 2,907,756
1,325,109 453,321 457,865 387,716 158,049 52,511 2,834,571
63,020 3,708 5,595 687 - 175 73,185

7. Earnings per share

1-6/2025 1-6/2024
Profit for the year attributable to shareholders of parent 20,220 17,115
Weighted average number of issued shares 37,924,289 38,368,458
Basic earnings per share (in EUR) 0.53 0.45
Diluted earnings per share (in EUR) 0.53 0.45

Diluted earnings per share are the same as basic earnings per share because the issuance of employee shares under the LTIP is linked to performance criteria and the potential impact of future performance only affects earnings per share once the defined performance conditions are met at the end of the reporting period.

SHARE-BASED PAYMENT ARRANGEMENT

PORR AG pursues a strategic direction aimed at sustainable growth and increasing the value of the company in the long term. For this reason, the Supervisory Board of PORR AG approved a share-based payment arrangement (Long Term Incentive Program, LTIP for short) with effect from 31 May 2023. The agreement is a performance-based share remuneration model, which extends over a threeyear term (performance period) and requires a personal investment by the participants based on an annual retention as a percentage of the bonus and premium agreement payments in cash, as well as at least 20,000 shares for members of the Executive Board by the end of the term. Remuneration is paid in the form of ordinary shares (a maximum of 500,000 shares will be issued) after three years of meeting the Group's annual EBT targets for 2023-2025, as approved by the Supervisory Board. The annual share allocation is calculated in each case at a strike price of EUR 13.67 and amounts to 25% of the bonus base value set in the individual target agreement. The aim of the LTIP is to bind the members of the Executive Board and other managers in the company in the long term and to increase their motivation and the way they identify with the company's goals. The agreement is also intended to further enhance the appeal of the PORR Group as an employer.

The fair value of the share-based payments on the grant date is EUR 13.44 per expected share, giving the LTIP with a three-year term a maximum value of EUR 3,663,717. As the performance criteria were met for the 2023 financial year, 92,268 shares were allocated. With regard to the fulfillment of the performance criteria for the 2025 fiscal year, there has been no change compared to the assessment as of 31 December 2024. The reserve as of 30 June 2025 amounts to EUR 861,170 (31 December 2024: EUR 654,488).

ACCOUNTING POLICIES

The share-based payment is recognised at fair value on the grant date; it is derived from the price of PORR AG common shares at the grant date and is earned over the performance period of the beneficiaries. The impacts of share-based payment transactions are recognised in the consolidated financial statements pro rata over the three-year performance period in employee benefits expense and in equity reserves. As compensation is settled through equity instruments (ordinary shares), no ongoing revaluation is performed.

8. Share capital

No. 2025 EUR 2025 No. 2024 EUR 2024
Ordinary bearer shares 39,278,250 39,278,250 39,278,250 39,278,250
Total share capital 39,278,250 39,278,250 39,278,250 39,278,250

Following a proposal by the Executive Board and the Supervisory Board, the Annual General Meeting of PORR AG on 29 April 2025 passed a resolution, on the basis of the profit for the 2024 financial year, to distribute a dividend of EUR 0.90 per share entitled to dividends.

On 4 April 2025, PORR AG completed its share buyback programme launched in 2024. In total, 701,614 bearer shares had been repurchased since 11 October 2024 at a weighted average price of EUR 21.36. Including shares acquired at an earlier date, PORR AG thereby held 1,703,674 treasury shares at an average purchase price of EUR 17.27.

On 17 June 2025, PORR AG sold all 1,703,674 of its treasury shares by way of an accelerated bookbuilding process. The shares were successfully placed with international institutional investors. The sales price per share amounted to EUR 26.50, resulting in gross proceeds of EUR 45.1m. Subsequently, as of 30 June 2025, the company does not hold any treasury shares.

AUTHORISED CAPITAL

By resolution of the Annual General Meeting of 28 April 2023, the Executive Board was authorised, with the approval of the Supervisory Board and within five years from 30 June 2023, to increase the share capital of the company by up to EUR 3,927,825 by issuing up to 3,927,825 no-par value bearer shares in exchange for cash or contribution in kind – in either case also in multiple tranches – also by way of indirect subscription rights in accordance with Section 153 Paragraph 6 of the Stock Corporation Act (authorised capital) and to determine the issue price, which may not be lower than the pro rate share of share capital, the conditions of issue, the subscription ratio and the further details of the implementation to be determined with the approval of the Supervisory Board. The Executive Board has been authorised, with the approval of the Supervisory Board, to exclude shareholders' subscription rights in whole or in part:

(i) if the capital increase is in exchange for contribution in kind; or

(ii) if the capital increase is in exchange for cash and

(A) the arithmetic total of the cash consideration of the share of share capital in the company, under exclusion of subscription rights, does not exceed the limit of 10% (ten percent) of the company's share capital at the time the authorisation is exercised, or (B) the exclusion of subscription rights is for the purpose of servicing an over-allotment option (greenshoe) in connection with the capital increase, or

(C) the exclusion of subscription rights in this respect is used to balance out fractional amounts.

The Supervisory Board is authorised to rule on changes to the company statutes resulting from the use of this authorisation by the Executive Board.

9. Hybrid capital

The hybrid bond issued in 2020 was fully repaid on the redemption date of 6 February 2025 in the amount of TEUR 46,450. The hybrid capital currently outstanding from the hybrid bonds issued in 2021 and 2024 has a total nominal value of TEUR 153,550.

in TEUR Balance as of
1 Jan 2025
Repayment New issue Balance as of
30 Jun 2025
Hybrid bond 2020 46,450 -46,450 - -
Hybrid bond 2021 18,550 - - 18,550
Hybrid bond 2024 135,000 - - 135,000
Total amount 200,000 -46,450 - 153,550

10. Financial instruments

The carrying amount of the financial instruments as per IFRS 9 corresponds to the fair value, with the exception of bonds subject to fixed interest rates (fair value hierarchy level 3) and liabilities to banks subject to fixed interest rates (fair value hierarchy level 3).

in TEUR Meas
urement
category
as per
IFRS 9
Carrying
amount
as of
30.6.2025
Measured
at
amortised
cost
Fair value
through
other com
prehensive
income
Fair value
through
profit and
loss
Fair value
hierarchy
Fair value
as of
30.6.2025
Assets
Other financial investments -
Shareholdings
FVTOCI 2,213 2,213 Level 3 2,213
Other financial investments -
Debt instruments
FVTPL 334 334 Level 3 334
Other financial investments FVTPL 60 60 Level 1 60
Trade receivables AC 893,132 893,132
Other financial assets AC 240,683 240,683
Other financial assets FVTPL 235 235 Level 1 235
Other financial assets FVTPL 25,814 25,814 Level 3 25,814
Derivatives (without hedges) FVTPL 990 990 Level 2 990
Cash and cash equivalents 307,537 307,537
Liabilities
Bonded loans
(Schuldscheindarlehen)
at fixed interest rates AC 22,987 22,987 Level 3 23,667
at variable interest rates AC 124,929 124,929
Liabilities to banks
at fixed interest rates AC 31,900 31,900 Level 3 29,552
at variable interest rates AC 42,774 42,774
Lease liabilities1 386,466 386,466
Other financial liabilities
at fixed interest rates AC 57 57 Level 3 58
Trade payables AC 1,338,969 1,338,969
Other financial liabilities AC 36,072 36,072
Derivatives (without hedges) FVTPL 4,917 4,917 4,917 Level 2 4,917
Derivatives (with hedges) 2,015 2,015 Level 2 2,015
by category
Financial assets at amortised cost AC 1,133,815 1,133,815
Cash and cash equivalents 307,537 307,537
Financial assets at fair value
through profit & loss
FVTPL 27,433 27,433
Financial liabilities at fair value
through profit & loss
FVTPL 4,917 4,917
Financial assets at fair value
through OCI
FVTOCI 2,213 2,213
Financial liabilities at
amortised cost
AC 1,597,688 1,597,688

1 Lease liabilities are subject to application of IFRS 16

Fair value
Carrying Measured through Fair value
Meas amount at other com through Fair value
urement as of amortised prehensive profit and Fair value as of
in TEUR category 31.12.2024 cost income loss hierarchy 31.12.2024
Assets
Other financial investments FVTOCI 2,265 2,265 Level 3 2,265
Other financial investments FVTPL 334 334 Level 3 334
Other financial investments FVTPL 63 63 Level 1 63
Trade receivables AC 832,365 832,365
Other financial assets AC 232,594 232,594
Other financial assets FVTPL 222 222 Level 1 222
Other financial assets FVTPL 25,814 25,814 Level 3 25,814
Derivatives (without hedges) FVTPL 871 871 Level 2 871
Derivatives (with hedges) 4 4 Level 2 4
Cash and cash equivalents 583,165 583,165
Liabilities
Bonded loans
(Schuldscheindarlehen)
at fixed interest rates AC 22,984 22,984 Level 3 23,936
at variable interest rates AC 124,912 124,912
Liabilities to banks
at fixed interest rates AC 7,340 7,340 Level 3 6,341
at variable interest rates AC 43,329 43,329
Lease liabilities1 386,551 386,551
Trade payables AC 1,180,881 1,180,881
Other financial liabilities AC 23,241 23,241
Derivatives (without hedges) FVTPL 5,592 5,592 Level 2 5,592
Derivatives (with hedges) 1,935 1,935 Level 2 1,935
by category
Financial assets at AC 1,064,959 1,064,959
amortised cost
Cash and cash equivalents 583,165 583,165
Financial assets at fair value
through profit & loss
FVTPL 27,304 27,304
Financial liabilities at fair value
through profit & loss
FVTPL 5,592 5,592
Financial assets at fair value
through OCI
FVTOCI 2,265 2,265
Financial liabilities at
amortised cost
AC 1,402,687 1,402,687

1 Lease liabilities are subject to application of IFRS 16

11. Segment reporting

The segment reporting has been prepared in accordance with the internal reporting structure and management of the PORR Group. As of 30 June 2025, industrial construction in Germany as well as the design-build business, which mostly involves German projects, was prospectively reclassified out of the segment AT / CH into the segment DE. At the same time, the area of building construction for eastern Switzerland was transferred into the segment Holding.

in TEUR
1–6/2025
AT / CH DE PL CEE Infra
structure
Inter
national
Holding Group
Production output (Group) 1,361,448 800,580 422,949 284,310 260,328 41,510 3,171,125
Segment revenue 1,176,180 816,881 399,433 302,589 233,338 30,786 2,959,207
Intersegment revenue 38,169 10,675 201 35 - 83,792
EBIT (Earnings before interest and
tax = segment earnings)
43,947 4,236 11,045 5,527 733 -16,789 48,699
in TEUR Infra
structure
Inter
1–6/2024 AT / CH DE PL CEE national Holding Group
Production output (Group) 1,554,559 454,158 457,664 398,443 217,647 33,703 3,116,174
Segment revenue 1,388,129 457,029 463,460 388,402 158,049 52,687 2,907,756
Intersegment revenue 9,302 8,755 39 141 - 75,708
EBIT (Earnings before interest and
tax = segment earnings)
34,038 2,659 8,264 11,365 -2,184 -11,977 42,165

12. Related party disclosures

There have been no material changes in relationships between affiliated companies or any resultant obligations or guarantees since 31 December 2024.

Transactions in the reporting period between companies included in the PORR Group's consolidated financial statements and the UBM Group companies primarily relate to purchased construction services.

In addition to subsidiaries and associates, related parties include the companies of the IGO Industries Group as they or their controlling entity has a significant influence over PORR AG through the shares they hold as well as the Strauss Group, as a member of the Executive Board of PORR AG also has significant influence over it. In addition to people who have significant influence over PORR AG, related parties also include the members of the Executive and Supervisory Boards of PORR AG as well as their close family members.

OTHER TRANSACTIONS WITH RELATED PARTIES

With a purchase and transfer agreement dated 3 June 2025, 49% of the shares in UBM hotels Management GmbH were acquired from the UBM Group for a purchase price of TEUR 10,570 (including the assumption of loans).

13. Audit disclosure

These interim financial statements of the PORR Group have neither been audited nor subjected to an audit review.

14. Events after the reporting period

In August 2025, long-term refinancing was secured prematurely for bonded loans (Schuldscheindarlehen). On 15 August 2025, bonded loans of TEUR 115,500 were repaid, of which TEUR 33,000 had a remaining term of 6 months and TEUR 82,500 had a remaining term of 2.5 years. On 18 August 2025, new bonded loans with 5 and 7-year terms and a total volume of TEUR 161,000 were newly placed.

Vienna, 21 August 2025

THE EXECUTIVE BOARD

Karl-Heinz Strauss m.p Klemens Eiter m.p. Claude-Patrick Jeutter m.p. Josef-Dieter Deix (since 26 March 2025) m.p.

STAT EMEN T OF ALL L EG A L REPRESENTATIVES

We confirm to the best of our knowledge that the condensed interim financial statements give a true and fair view of the assets, liabilities, financial position and profit or loss of the Group as required by the applicable accounting standards and that the half-year Group management report gives a true and fair view of the assets, liabilities, financial position and profit or loss of the Group regarding important events that have occurred during the first six months of the financial year and their impact on the condensed interim financial statements and of the principal risks and uncertainties for the remaining six months of the financial year and of the major related party transactions to be disclosed.

August 2025 , Vienna

Karl-Heinz Strauss Chairman of the Executive Board and CEO

Klemens Eiter Executive Board Member and CFO

Claude Patrick Jeutter Executive Board Member and COO

Josef-Dieter Deix Executive Board Member and COO

F IN A NCI A L CALENDER

18.11.2025 Interest payment hybrid bond 2021 20.11.2025 Publication report on the 3rd quarter 2025

CONTACT

Investor Relations [email protected]

Group Communications [email protected]

The report on the first half of 2025 can be requested free of charge from the company, Absberggasse 47, 1100 Vienna, and can also be downloaded from https://porr-group.com/en/ir-interimreports/.

ACKNOWLEDGE-MENTS

Media Proprietor

PORR AG Absberggasse 47, 1100 Vienna T +43 50 626-0 [email protected] porr-group.com

Concept, Text, Design and Editing

PORR AG . Investor Relations, Group Communications Mensalia Unternehmensberatungs GmbH, Vienna Translation by Collet Ltd. Created with ns.publish von Multimedia Solutions AG, Zürich.

Photos

H53 JV Brenner Basis Tunnel Wolfgang Gollmayer (H53 JV Pfons – Brenner Basis Tunnel – p. U1, U4), Astrid Knie (Executive Board photoshoot 2025 – p. 2), PORR (railway lines Craiova, Drobeta Turnu Severin, Caransebeș – p. 3; Kolnig-Gdansk gas pipeline – p. 3), Oberbramberger (PV system PORR Simmering – p. 3)

Disclaimer

This half-year report also contains statements relating to the future which are based on estimates and assumptions which are made by the management to the best of their current knowledge. Future-related statements may be identified as such by expressions such as "expected", "target" or similar constructions. Forecasts related to the future development of the Group take the form of estimates based on information available at the time of the interim report going to press. Actual results may differ from the forecast if they are shown to be based on inaccurate assumptions or are subject to unforeseen risks.

Every care has been taken to ensure that all information contained in every part of this half-year report is accurate and complete. The figures have been rounded off using the compensated summation method. We cannot rule out possible round-off, typesetting and printing errors.

This report is a translation into English of the half-year report issued in the German language and is provided solely for the convenience of English-speaking users. In the event of a discrepancy or translation error, the German-language version prevails.

PORR AG Absberggasse 47, 1100 Vienna T +43 50 626-0 porr-group.com

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