Following the resolution passed at the ordinary shareholders’ meeting of 23 April 2010 authorising the purchase of own shares, Ansaldo STS SpA acquired a total of n. 160,000 ordinary Ansaldo STS SpA shares (corresponding to about 0.134% of the share capital) in the period comprised between 05/11/2010 and 08/11/2010. These shares were acquired at an average price of EUR 9.3833 per share net of commission. The mentioned shares were acquired to serve the 2008-2010 stock grant plan approved by the shareholders’ meeting on 1st April 2008.