OPC: Change in the ownership ratio of a major shareholder

SSI Vision Fund reports the change in the ownership ratio:

-         Stock symbol: OPC

-         Trader: SSI Vision Fund

-         Affiliated company: SSI Asset Management

-         Owning volume before trading: 1,428,590 shares (11.63%)

-         Bought volume: 128,110 shares

-         Sold volume: 321,600 shares

-         Owning volume after trading: 1,235,100 shares (10.05%)

-         Date of changing the ownership ratio: From May 15, 2012.

HOSE

>   THG: Transaction of affiliated person (17/05/2012)

>   CSG: Transaction of affiliated institution (17/05/2012)

>   CSM: Trading result of affiliated person (17/05/2012)

>   DHC: Transaction of inside shareholder (17/05/2012)

>   CII: Transaction of major shareholder (17/05/2012)

>   ITD: Transaction of affiliated person (17/05/2012)

>   APC: Trading result of major shareholder (17/05/2012)

>   CII: Change in the ownership ratio of a major shareholder (17/05/2012)

>   SFI: Transaction of major shareholder (17/05/2012)

>   KHA: Trading result of inside shareholder (17/05/2012)