PVS: Result of transaction of principal shareholder

PVS announces the result of transaction of principal shareholder as follows:

-    Name of issuer: Petroleum Technical Services Corporation

-    Stock code: PVS

-    Name of principal shareholder: PetroVietnam Finance Corporation (PVFC)

-    Securities type: Common stock

-    Number of shares held by the principal shareholder before transaction: 12,323,622 shares

-    Number of shares disposed: 9,000 shares

-    Total holding and total percentage holding following transaction: 12,314,622 shares

-    Purpose of transaction: at the request of investment trust customer

-    Date of transaction: From 27/3/2009 to 27/4/2009

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