Large shareholder of Rubia Natural Colours is the Zuidelijke Land- en Tuinbouworganisatie (ZLTO), a Dutch agricultural organization. The other shares are owned by private investors. ZLTO Participations is the investment company of ZLTO. Already over 100 years, the company works on its goal to improve the position of the Dutch agriculture and horticulture in the world through strategic investments. ZLTO Participations is unique in the engagement between financial means and knowledge of the agriculture and horticulture as one of the most successful branches of agriculture in the Netherlands.
ZLTO Participations has an invested financial value of over 700 million Euros (2007). The portfolio is composed of strategic participations in the processing industry in the Food and Agricultural sector.