The Group - Structure
 
 
Between 31/12/2006 and 17/09/2007, the group structure underwent various changes:

1)   Various entities have been created:

        •   Arpadis Manage SA

        •   Arpadis Chemicals Germany GmbH

        •   Arpadis Israel Ltd

        •   The branch of Arpadis France SAS in Staint- Rémy-de-Provence

        •   Polylink Logistics Ltd in China

2)   Certain participating interests have been incorporated into the group by means of contributions in kind:

        •   100% of Arpadis Immo NV

        •   40% of Maskem Europe SA

        •   50% of Arpadis Custom Processing SA

3)   One subsidiary has changed its name and others have re-located their registered offices:

        •   DPS-Group NV is now called Arpadis Group SA

        •   Schoonjans SA is now called Arpadis Coatings Services SA

        •   Arpadis Immo SA and Arpadis Group SA are now located in Manage


Shareholder structure:

Before the Public Offering, the shareholder structure of the central entity was as follows:

        •   L.A. Investments NV (74.60%), this is an investment company belonging to Laurent Abergel
            and of which he is the permanent representative.

        •   Laurent Abergel (16.58%)

        •   Xavier Carré (8.82%)

The Arpadis Group no longer holds all the shares in its subsidiaries. The minority shareholders are in each case the local managers of the subsidiaries who therefore have a direct interest in their future success.