1) As of November 2011, based on shareholder identification assessment in October 2011
2) ACS ACTIVIDADES DE CONSTRUCCION Y SERVICIOS S.A., Madrid; ACS held 49% of outstanding HOCHTIEF shares as of September 30, 2011. In total ACS' voting share in HOCHTIEF Aktiengesellschaft amounted to 53.4% including the HOCHTIEF treasury shares of 4.44%.
3) Exact number of treasury shares as of September.30, 2011: 3,421,735 pieces, i.e. 4.44%
4) Shareholding level as of March 23, 2011