Press release

Heerlen, NL, 13 May 2011 10:15 CEST

Royal DSM, the global Life Sciences and Materials Sciences company, has repurchased 502,059 of its own shares in the period from 6 May 2011 up to and including 12 May 2011 at an average price of €46.05. This is in accordance with the repurchase, covering existing option plans, announced on 23 February 2011. The consideration of this repurchase was €23.1 million.

The total number of shares repurchased under this program to date is 4,735,681 shares for a total consideration of €207.4 million.