Leo J. Pruis

GTI NV operates as a holding company with interest in providing engineering services. The firm focuses on technical services, industrial firms and infrastructure projects. The company develops integral solutions from design, maintenance, and management. It serves clients through a network of branches, collaborations, and alliances. The company is headquartered in Zaltbommel, the Netherlands.

Van der Moolen Holding NV provides trading and services on securities and derivatives. It offers trading and brokerage of equities, equity options, derivatives, futures and exchange traded funds on various securities exchanges. The company was founded in 1892 and is headquartered in Amsterdam, the Netherlands.

TBI Holdings BV operates as a financial holding company with activities in the engineering, construction and development, and infrastructure industries. Its subsidiaries include Comfort Partners, Croon Elektrotechniek, Eekels Technology, Era Contour, Groothuis Wonen, Hazenberg Bouw, Hevo, J.P. van Eesteren, Koopmans Bouwgroep, MDB, Mobilis, Nico de Bont, Synchroon, Timmermans Infratechniek, Voorbij Funderingstechniek, Voorbij Prefab, Wolter and Dros, and WTH Vloerverwarming. The company was founded in 1981 and is headquartered in Rotterdam, the Netherlands.