Retzer Competitors

At STRABAG around 89,000 people working on progress at more than 2,400 locations worldwide. Uniqueness and individual strengths characterise both our projects and each of us as individuals. Whether its building construction, civil engineering, road construction, underground engineering, bridge building, tunnelling, construction material production, project development or building management – we are always one step ahead so that we can become the most innovative and sustainable construction technology company in Europe. Diversity, inclusion and equal opportunities are integral to this, who we are as a company and how we work. Together we work as partners to complete projects successfully and grow with new challenges. Together we achieve great things. Let’s progress!

wienerberger is one of the leading providers of innovative, durable solutions for the entire building envelope, in the fields of new build and renovation, as well as infrastructure in water and energy management. In doing so, wienerberger contributes to the responsible and efficient use of resources over the long term. Innovation, Operational Excellence, as well as M&A and Portfolio Optimization are the most important pillars of wienerberger’s sustainable growth. In our core markets, Europe and North America, we are continuously expanding our main segments: new construction, renovation, and infrastructure. Total revenues in 2025 € 4.6 billion Operating EBITDA € 754 million More on career at wienerberger: https://www.wienerberger.com/en/career.html Privacy Policy of Wienerberger AG: https://www.wienerberger.com/en/info/privacy-policy.html Imprint of Wienerberger AG: https://www.wienerberger.com/en/info/Imprint.html

Driving innovation for excellence – that’s what PORR stands for for more than 150 years. With around 21,000 employees and a production output of around EUR 6.8 bn (as at 31.12.2025), it is one of the leading construction companies in Europe. As a full-service provider, PORR offers holistic construction solutions from planning and construction to operation, covering the entire construction value chain in building construction, civil engineering and infrastructure construction. PORR focuses on its home markets Austria, Germany, Switzerland, Poland, the Czech Republic, Slovakia and Romania. On selected international project markets such as Norway, the UK, Italy, the Benelux countries and Qatar, PORR contributes its expertise together with local partners, particularly in tunnel construction, railway construction and specialist civil engineering. The PORR share is listed on the Vienna Stock Exchange.