PVD: Violation of information disclosure of an inside trading

Violation of information disclosure requirement of an inside trading in Petrovietnam Drilling and Well Services Joint Stock Company (HOSE: PVD) as follows:

• Stock symbol: PVD

• Ms. Van Thi Trinh (Daughter Mr. Van Duc Tong – Deputy CEO) Bought 1,200 shares on February 22, 2011 announcing the information tardily.

hose

>   RDP: Mr. Nguyen Dac Hai registered to sell 10,080 shares (31/03/2011)

>   PXS: VF2 registered to buy and sell 1,000,000 shares (31/03/2011)

>   AGD: Mr. Le Quang Tuan registered to sell 300,000 shares (05/04/2011)

>   PXS: PXS to sell stock to a strategic partner (31/03/2011)

>   ABT: ABT to buy back stock (31/03/2011)

>   ABT: Resolution on share buyback (31/03/2011)

>   V12: Member of Supervisory Board bought 5,000 shares (05/04/2011)

>   VIX: Ms. Lien sold 2,969,560 shares (05/04/2011)

>   AVS: Member of the Supervisory Board registered to buy and sell 270,000 shares (05/04/2011)

>   VIX: Ms. Ngan sold 5,400,000 shares (05/04/2011)