Wim G. B. te Kamp

Tauw BV provides environmental, civil engineering and laboratory services. It offers legal and financial services for environmental development. The company was founded in 1994 and is headquartered in Deventer, the Netherlands.

Wadinko NV (Wadinko) is an independent private equity firm founded in 1992. Wadinko NV is headquartered in Zwolle.

Oranjewoud NV engages in the provision of construction and engineering services. It operates through the following segments: Consultancy & Engineering Services; Rail Systems; Civil Infrastructure; International Infrastructure and Rail Systems; Technology & Buildings; and Other. The Consultancy & Engineering Services segment offers business plans and advisory services. The Rail Systems segment designs, installs, and manages railroad and train systems. The Civil Infrastructure segment constructs and repair roads, bridges, and structures. The International Infrastructure and Rail Systems segment offers traction electronics, on-board power grids, underwater and foundation engineering, monitoring and power systems, and polymer modified bitumen. The Technology & Buildings segment develops and maintains technical systems and buildings in the healthcare, mobility hub, and commercial sectors. The Other segment deals with sports and temporary staff units. The company was founded on October 18, 2001 and is headquartered in Gouda, the Netherlands.

Calder Holding BV provides management, investment, automation, and education services. The firm provides career development, debt counseling, assisted living, and vocational training. The company was founded in 2007 and is headquartered in Zwolle, the Netherlands.