NATIONAL BANK OF GREECE S.A.

Press Release

Announcement Date & Time of 1Q 2015 Results

National Bank ofGreecewill announce the 1Q 2015 financial results, onThursday 28 May 2015, at17:30, Greek time (+2:00 GMT). A conference call for the presentation and discussion of the results is scheduled to follow at19:00on the same day.

Athens, 20 May 2015