Stephan Ronald Nanninga occupies the position of Director & Branch Manager at Technische Unie BV. Mr. Nanninga is also on the board of Bunzl Plc, IMCD NV and Dutch Star Companies ONE NV and Group Managing Director-Distribution Europe at CRH Nederland BV.

Mr. Nanninga previously held the position of Chief Executive Officer for SHV Holdings NV and Managing Director-Distribution Europe at CRH Plc.

He received a graduate degree from Rotterdam University and an MBA from Delft University of Technology.