Flughafen Wien is the operator of Vienna Airport. Through its subsidiaries, Co. is engaged in managing airport operations and also provides a range of infrastructure services, which include the development and maintenance of infrastructure, ground handling and security services to a variety of retail, gastronomy and parking services as well as real estate marketing. Co. is responsible for the operation and maintenance of all movement areas and the terminals, the facilities involved in passenger and baggage handling as well as security controls for persons and hand luggage. Co. also provides services for aircraft and passenger handling in scheduled, charter and general aviation traffic.

PORR is engaged in the building construction, structural and civil engineering, road construction and infrastructure construction. Co. also operates the construction branches of planning, development, execution and operation. Co. also coordinates the supraregional activities of the construction branch subsidiaries. Co. is engaged in the contruction of buildings and industrial plants; revitalizing protected architectural treasures; general contractor services, project planning and development; railway construction; foundation engineering; power-plant, tunnel, underground rail and traffic route construction; environmental engineering and prestressing technology.

S Immo AG is an Austria-based company engaged in the real estate sector. The Company specializes in the acquisition, letting and sale of properties. Furthermore, It offers real estate project developments, which includes Einsteinova office, Quartier Belvedere Central, and The Mark office project, among others, renovation of existing properties, asset and portfolio management and a range of services, such as facility management and brokerage. The Company's real estate portfolio comprises residential, office, retail and hotel properties. It operates four geographical segments: Austria, Germany, Central Europe (CEE) and Southeastern Europe (SEE). In addition, the Company is a parent of CEE Immobilien GmbH, Hansa Immobilien EOOD, Rega Property Invest sro, Ikaruspark GmbH, SC Societate Dezvoltare Comercial Sudului (SDCS) SRL, Maior Domus Hausverwaltung GmbH, and Eurocenter doo, among others.

Strabag is a technology group for construction services. Co. provides its services in four operating segments: North + West, which executes construction services of nearly any kind and size with a focus on Germany, Poland, the Benelux countries and Scandinavia; South + East is focused on Austria, Switzerland, Hungary, the Czech Republic, Slovakia, Russia and neighbouring countries as well as on the region South-East Europe; International + Special Divisions, which include on the one hand, the field of tunneling and the concessions business; and Other, which contains the intra-company Central Divisions and Central Staff Divisions.

Warimpex is a real estate group based in Austria Co. is a "hybrid" real estate company that develops and operates properties itself as an asset manager and property owner until the time at which the highest added value can be realized through sale. The majority of these projects is located in Central and Eastern Europe. Co. has developed real estate with investments including hotels in the five-, four- and three-star categories. In addition, Co. also develops office buildings and other real estate. Accordingly, Co. generates revenue from the operation of hotel properties and the letting of commercial and office space while simultaneously realizing proceeds from real estate sales.