Selected preliminary operating data for the period 1.04.2006 - 31.05.2006

Polski Koncern Naftowy ORLEN S.A. (“PKN ORLEN”, “Company”), Central Europe’s largest downstream oil company, respecting the communication transparency and equal access to the information, due to the planned meetings with capital markets representatives, announces selected preliminary unconsolidated and consolidated PKN ORLEN operating and financial data for the period from April 1st, 2006 to May 31st, 2006 (in accordance with IFRS):