REPURCHASE OF SHARES IN ASTRAZENECA PLC

AstraZeneca PLC announced that on 14 December 2011, it purchased for cancellation 769,957 ordinary shares of AstraZeneca PLC at a price of 2926 pence per share.

Some of these shares were purchased under the terms of the previously announced irrevocable, non-discretionary share repurchase programme for the period 3 October 2011 to 16 December 2011.

Upon the cancellation of these shares, the number of shares in issue will be 1,295,772,368.

A C N Kemp

Company Secretary

15 December 2011

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