Ad hoc - HeidelbergCement’s decision to implement capital increase

The Managing Board of HeidelbergCement AG has resolved, with the consent of the Supervisory Board, to make use of the authorised capital and to implement a cash capital increase with a view to strengthen the company’s equity base. VEM Vermögensverwaltung GmbH, Dresden/Germany, a Merckle group company, will subscribe approximately 4.4 million new shares at a close to stock market subscription price of 114 Euro per share. The new shares are entitled to receive dividends for the entire business year 2007. The subscription rights for existing shareholders have been excluded. By this capital increase, the company expects cash proceeds of approximately 500 million Euro shortly. The proceeds will be used to partly refinance the current cash offer for the entire share capital of Hanson plc, UK.

Heidelberg, 22 May 2007

HeidelbergCement AG
The Managing Board
Ad hoc announcement pursuant to § 15 German Securities Trading Act (WpHG)