Mandatory Notification of Trade


December 30, 2008, Oslo, Norway:  Group President Marine of Petroleum Geo-Services ASA, Rune Eng has on December 30, 2008 sold 3,000 shares in Petroleum Geo-Services ASA (PGS) at a price of NOK 26.97.
 
Following the transaction, Rune Eng owns 17,874 shares in Petroleum Geo-Services ASA and 150,000 stock options.
 
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Petroleum Geo-Services is a focused geophysical company providing a broad range of seismic and reservoir services, including acquisition, processing, interpretation, and field evaluation. The company also possesses the world's most extensive multi-client data library. PGS operates on a worldwide basis with headquarters at Lysaker, Norway.
For more information on Petroleum Geo-Services visit www.pgs.com.