UNIPETROL, a.s. hereby announces that there has been a change in the financial calendar for 2013.

Financial results for the second quarter and Half-year report 2013 will be published on 23 July 2013.

The originally announced publication date of these documents was 25 July 2013.

In Prague, 17 June 2013

UNIPETROL, a.s.

Reg. Announc. No. 14/2013