PRC: Change in shareholding of principal shareholder (ABC)

Name of issuer: Port Serco JSC
Stock code: PRC
Securities type: Common stock
Name of principal shareholder: ABC International Joint Stock Group
Number of shares held by the principal shareholder before transaction: 123,600 shares (10,48% of outstanding shares)
Number of shares acquired: 20,000 shares
Total holding following transaction: 143,600 shares (12.2% of outstanding shares)
Date of transaction: 04/07/2012