| 2013 | | 2009 | | 2008 | | 2007 | |
| 31/12/2008 | Announcement of Regulated Information of Law 3556/2007 | |
| 31/12/2008 | Purchase of own shares | |
| 31/12/2008 | Purchase of own shares | |
| 31/12/2008 | Disclosure of the decision for own shares buyback | |
| 30/12/2008 | Purchase of own shares | |
| 29/12/2008 | Purchase of own shares | |
| 24/12/2008 | Purchase of own shares | |
| 23/12/2008 | Purchase of own shares | |
| 22/12/2008 | Purchase of own shares | |
| 18/12/2008 | Announcement of Regulated Information of Law 3556/2007 | |
| 18/12/2008 | Purchase of own shares | |
| 17/12/2008 | Purchase of own shares | |
| 16/12/2008 | Announcement - Invitation to exercise the right to convert bonds into shares | |
| 16/12/2008 | Purchase of own shares | |
| 16/12/2008 | Invitation to exercise the right to convert bonds into shares | |
| 15/12/2008 | Purchase of own shares | |
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