As part of the obligations of the Company to inform investors, Hellenic Exchanges SA announces the Financial Calendar for 2012:

• Release of Fiscal Year 2011 Results:                 Monday March 5^th 2012
• Release of First Quarter 2012 Results:              Monday May 14^th 2012
• Annual General Meeting of Shareholders:         Wednesday May 23^rd 2012
  • Dividend beneficiaries – Record date (*):         Wednesday June 6^th 2012

If there is a decision to pay out a dividend, the ex-date (Friday June 1^st 2012) is before the expiration, on June 15^th 2012, of the following future contracts that are traded in the derivatives market: Future with the HELEX share as an underlying security.

• Dividend payment date (*):                              Tuesday June 12^th 2012
• Release of Six Month 2012 Results:                  Monday July 23^rd 2012
• Release of Nine Month 2012 Results:               Monday November 12^th 2012

(*)  The abovementioned dates are subject to approval by the Annual General Meeting of shareholders.

Any dividend for fiscal year 2011 will be paid out through a bank. The bank chosen (to be announced later) will credit the operators' accounts, and they in turn will credit the beneficiaries' accounts.

The annual meeting with analysts concerning the financial results will take place on March 5^th 2012.

The results will be published after the end of trading on Athens Exchange on the release day, on the Company's website (www.helex.gr) as well as on the website of Athens Exchange (www.athex.gr). The results will be published in the (Greek) press two working days following their publication on the Company's website.