REPURCHASE OF SHARES IN ASTRAZENECA PLC

Further to the announcement of its irrevocable, non-discretionary share repurchase programme for the period 3 October 2011 to 16 December 2011, AstraZeneca PLC announced that under the terms of that programme it purchased for cancellation 500,078 ordinary shares of AstraZeneca PLC at a price of 2981 pence per share on 20 October 2011. Upon the cancellation of these shares, the number of shares in issue will be 1,322,817,156.

A C N Kemp

Company Secretary

21 October 2011

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