Further to its announcement of 9 June 2006 regarding the dematerialisation of shares, HELLENIC PETROLEUM S.A. informs investors that pursuant to decision 3/387/19.6.2006 of the Board of Directors of the Capital Market Commission, which amends decision 1/380/4.5.2006 on the sale of registered shares not submitted for dematerialisation, the deadline for dematerialisation of registered shares in HELLENIC PETROLEUM S.A. is extended until 31st October 2006. HELLENIC PETROLEUM S.A. registered shares not submitted for dematerialisation by 31 October 2006 will be sold off on the Athens Stock Exchange by HELLENIC PETROLEUM S.A., according to the regulations of the Athens Stock Exchange. Regarding the procedure for sale and the way in which proceeds are paid, the aforementioned announcement made by HELLENIC PETROLEUM S.A. on 9 June 2006 remains in force. For further information, shareholders may contact HELLENIC PETROLEUM S.A. Shareholder Services, 199 Kifissias Ave, 151 24, Marousi (tel. 210 87 67 861-4, fax. 210 87 67 993-4).