Ansaldo STS (STS.MI) informs that the Financial Calendar for 2011, released to the market on 15
December 2010 and modified respectively on 17 January and on 1st February 2011, is updated with the
new date of the Board of Directors for the Approval of the third- quarter interim report which will
be held on November 4, 2011 instead of October 28, 2011.