PVD: Ms. Nguyen Thi Trung registered to 5,000 shares

Petrovietnam Drilling and Well Services Joint Stock Company (HOSE: PVD) has disclosed a transaction of an affiliated person as follows:

- Stock symbol: PVD

- Trader: Ms. Nguyen Thi Trung (Wife of Mr. Van Duc Tong - Deputy CEO)

- Owning volume before trading: 31,712 shares

- Volume registered to sell: 5,000 shares

- Owning volume after trading: 26,712 shares

- Trading method: Order matching

- Expected trading period: From February 15, 2011 to March 30, 2011

hose

>   MTG: VDSC registered to buy and sell 1,000,000 shares (10/02/2011)

>   HBC: Deputy CEO at BSC bought and sold 152,515 shares (10/02/2011)

>   HHG: Ms.Phuong sold 10,700 shares (29/01/2011)

>   HDO: Lotus Investment Management Co. bought 900,000 shares (29/01/2011)

>   HAG: Old Square Capital Frontier Markets Master Fund, L.P registered to sell 41,000 shares (10/02/2011)

>   DCS: Director sold 12,000 shares (29/01/2011)

>   GMD: Deutsche Bank AG London regiatered to 5,600,000 shares (10/02/2011)

>   DPM: Deutsche Bank AG London registered to buy an sell 12,000,000 shares (10/02/2011)

>   VCC: Board resolution on undistributed shares (29/01/2011)

>   CKV: Mr. Nguyen Dang Chieu bought 218,800 shares (29/01/2011)