PORR : Conference Call Presentation, May 2023

• This presentation was prepared by PORR AG (the "Company") solely for use at investors' meetings and is provided solely for informational purposes.
• This presentation dates from May 2023. 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.
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• This document 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.
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High-level output in construction

Recovering order intakes

100

80

60

Civil Engineering Building Construction

Order backlog in EUR m

+26%

7,920 8,033 8,211

6,527

55%

Order intake in EUR m

+11%

1,850

1,429

58%

1,150

1,278

9%12% 5%10%

• Strong increase in industrial construction compensating lower residential construction
• Increase mainly from permanent business in DE and AT

• Normalisation in order intake after one-offeffects in previous years' Q1
• Major new orders in April + May (Brenner base tunnel, oncology hospital in Wrocław) to be recognized in Q2