Press Release

September 15, 2011

DSM – repurchase of shares (7-14 September 2011)

DSM repurchased 641,065 shares from 7 to 14 September 2011 at an average price of €31.84.

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Heerlen, NL, 15 Sep 2011 10:15 CEST

Royal DSM, the global Life Sciences and Materials Sciences company, has repurchased 641,065 of its own shares in the period from 7 September 2011 up to and including 14 September 2011 at an average price of €31.84. This is in accordance with the repurchase, covering existing option plans, announced on 7 September 2011. The consideration of this repurchase was €20.4 million.