René J. H. M. Kuipers

Norit International NV engages in the research, development, manufacture and sale of activated carbons. Its activated carbons are used in environmental, health, safety, and industrial applications. The company was founded on January 18, 1918 and is headquartered in Amersfoort, the Netherlands.

Koninklijke Volker Wessels Stevin NV provides construction and civil engineering services. It operates business through the following markets: building and property development, energy and telecom, and infrastructure. It offers housing and utility construction, industrial construction, property development, civil engineering, network infrastructure, telecommunications infrastructure, railway construction and maintenance, technical installations, traffic technology, plant and machinery management, park management, building supplies and consulting services. The company was founded in 1854 and is headquartered in Amersfoort, Netherlands.

Volkerwessels Bouw & Vastgoedontwikkeling BV provides building and property development services. It offers services such as housing and utility construction, industrial construction, property development, civil engineering, road construction and network infrastructure (cable and pipelines). The company was founded in 1990 and is headquartered in Rijssen, the Netherlands.

Koninklijke VolkerWessels NV provides construction services. It operates through the following business and geographical segments: Construction & Real Estate Development, Infrastructure, Energy & Telecom Infrastructure, UK, North America and Germany. The Construction & Real Estate Development segment consists of companies that are in residential and nonresidential construction and renovation, the provision of technical installation services, real estate development, and industrial construction supply. The Infrastructure segment undertakes activities in the design and realization, project management and maintenance of infrastructure projects in connection with civil works, road construction, concrete and hydraulic engineering, railway infrastructure construction, traffic management and traffic technology, and smart mobility. The Energy & Telecom Infrastructure segment consists of energy infrastructure business and telecom infrastructure business. The UK segment delivers civil engineering projects, rail services, specialist marine, water and environmental engineering projects, highways maintenance and renewal projects, and industrial and commercial building. The North America segment focuses on the construction and maintenance of road and highways infrastructure and the construction and installation of underground civil works and utilities. The Germany segment develops and constructs residential property and low cost subsidized housing located in prime cities. The company was founded in 1854 and is headquartered in Amersfoort, Netherlands.

Reggeborgh Invest BV is a family office founded in 1991 by the Wessels family. The Dutch company has grown into an international holding with subsidiaries in Germany, Belgium, and the Netherlands.

Argos Group Holding BV provides storage and supply of petroleum products and biofuels. The firm offers bunkering, wholesale, depots, logistic, and supply and trading servies through its subsidiaries. The company is headquartered in Rotterdam, the Netherlands.

Varo Energy BV engages in the refining, storing, sale, and supply of oil and fuel products. It offers liquid petroleum, gasoline, biofuels, ultra low sulphur diesel, heating oil, aviation fuels, bitumen, and bunker fuel oil. The company is headquartered in Rotterdam, the Netherlands.

Deutsche Glasfaser Holding GmbH provides broadband services. It offers glass fiber, DG router, router, and speedtest. The company is headquartered in Borken, Germany.