YBC: Ms. Thuy bought and sell 79,700 shares

YBC announces the result of transaction of principal shareholder (Ms. Thuy) as follows:

• Name of issuer: Yen Bai Cement and Mineral JSC

• Stock code: YBC

• Name of principal shareholder: Ms. Nguyen Thu Thuy

• Securities type: Common stock

• Number of shares held by the principal shareholder before transaction: 263,200 shares

• Nature of transaction: Acquisition and selling through negotiation or continuous order matching

• Number of shares registered for acquisition: 200,000 shares

• Number of shares registered for sale: 200,000 shares

• Number of shares acquired: 50,700 shares

• Number of shares disposed: 29,000 shares

• Total holding following transaction and total percentage holding following transaction: 284,900 shares (5.889% of outstanding shares)

• Date of transaction: From 18/05/2011 to 30/05/2011.

hnx

>   YBC: Ms. Nguyen Thu Thuy sold 29,000 shares (08/06/2011)

>   YBC: Ms. Thuy bought 35,700 shares (08/06/2011)

>   VHH: Mr. Tran Van Long registered to buy 1,000 shares (08/06/2011)

>   DIG: Mr. Do Doan Chien registered to buy and sell 10,000 shares (08/06/2011)

>   HDC: Member of the BOD registered to buy 200,000 shares (08/06/2011)

>   LSS: Chairman of the BOD bought 65,430 shares (08/06/2011)

>   TNT: Chairman of the BOD registered to sell 1,700,000 shares (08/06/2011)

>   BMG: Decision on initial listing (08/06/2011)

>   PAC: FTIF bought 276,800 shares (Revised 03-Jun-2011) (08/06/2011)

>   PAC: FTIF registered to sell 665,730 shares (08/06/2011)