Transaction in Own Shares

TRANSACTION IN OWN SHARES

Kazakhmys PLC announces that on 10 April 2012 it purchased from J.P. Morgan Securities Ltd. 170,500 ordinary shares at an average price of 876.3499 pence per share. The highest price paid was 891.5 pence per share and the lowest price paid was 855.0 pence per share. The purchased shares will be held as treasury shares. Following the above purchase, Kazakhmys PLC holds 8,680,003 ordinary shares in treasury and has 526,737,958 ordinary shares in issue (excluding treasury shares).

Kazakhmys PLC - Investor Relations

John Smelt

+44 (0)20 7901 7882

[email protected]

Merlin

David Simonson

+44 (0)20 7726 8400

Hill & Knowlton Hong Kong

K W Lam

+852 28 946 321