PVD: Announcement on share buyback

Petrovietnam Drilling and Well Services JSC (HOSE: PVD) has intention to repurchase its stock as follows:

- Stock symbol: PVD

- Number of shares registered to buy back: 826,950 shares

- Trading method: Order matching or put through

- Trading period: From December 22, 2011 to March 21, 2012.

HOSE

>   KHA: Trading result and transaction of major shareholder (16/12/2011)

>   HAI: Mr. Dong bought 20,000 shares (16/12/2011)

>   KDH: Trading result of inside shareholder (16/12/2011)

>   ASM: Mr. Tinh transaction results (16/12/2011)

>   NPS: Mr.Hoang transaction notice (16/12/2011)

>   VC7: Notice of share repurchase for Treasury stock (16/12/2011)

>   VNF: Mr. Nhien sold 14,000 shares (16/12/2011)

>   VC7: Board Resolution on share repurchase for Treasury stock (16/12/2011)

>   NVB: Mr. Tien transaction results (16/12/2011)

>   L18: Mr. Giang registered to buy 50,000 shares (16/12/2011)