Notification of significant change of voting rights pursuant to Law 3556/2007

Pursuant to the provisions of Law 3556/2007, Piraeus Port Authority S.A. (hereinafter "PPA"), announces the below notification received from Helikon Investments Limited on November 11, 2021:

1. Corporate name of person subject to the notification obligation: Helikon Investments Limited.

2. Corporate name of shareholder: Helikon Long Short Equity Fund Master ICAV.

3. Pursuant to a transaction made on November 10, 2021, the percentage of voting rights in PPA held by the shareholder Helikon Long Short Equity Fund Master ICAV amounts to 5,376%.

The present announcement is also accessible in the Company's website www.olp.gr.