1 March, 2007

Notice on the shareholder’s announcement

The Board of Directors of Tisza Chemical Group Public Limited Company (TVK Plc.) (H-3581 Tiszaújváros, TVK Ipartelep, Gyári street, registration number: 05-10-000065) hereby informs its shareholders and capital market participants that MOL Hungarian Oil and Gas Public Limited Company (1117 Budapest Október huszonharmadika utca 18., registration number: 01-10-041683), forwarded the following announcement to the Board of Directors:

Change in influence of MOL in TVK

MOL Hungarian Oil and Gas Public Limited Company (1117 Budapest Október huszonharmadika utca 18., registration number: 01-10-041683) hereby informs the Board of Directors of Tisza Chemical Group Public Limited Company, that by purchasing 7,666,850 TVK shares representing 31.56% of TVK’s share capital on 27 February 2007, the direct influence of MOL plc. in TVK Plc. increased to 76.11%, while the influence of Slovnaft remained unchanged at 8.06%. The direct and indirect influence of MOL Plc. in TVK Plc. thus increased to 84.17%.

Change in influence of MOL in TVK

MOL Hungarian Oil and Gas Public Limited Company (1117 Budapest Október huszonharmadika utca 18., registration number: 01-10-041683) hereby informs the Board of Directors of Tisza Chemical Group Public Limited Company, that by purchasing 2,595,263 TVK shares representing 10.68% of TVK’s share capital on 28 February 2007, the direct influence of MOL Plc. in TVK Plc. increased to 86.79%, while the influence of Slovnaft remained unchanged at 8.06%. The direct and indirect influence of MOL Plc. in TVK Plc. thus increased to 94.86%.