Commission Decision (EU) 2015/455 of 23 July 2014 on the State aid SA.34826 (2012/C), SA.36005 (2013/NN) implemented by Greece for Piraeus Bank Group relating to the recapitalisation and restructuring of Piraeus Bank SA (notified under document C(2014) 5217) (Only the English text is authentic) (Text with EEA relevance)