Press release

Heerlen, NL, 06 May 2011 10:15 CEST

Royal DSM, the global Life Sciences and Materials Sciences company, has repurchased 601,953 of its own shares in the period from 29 April 2011 up to and including 5 May 2011 at an average price of €45.78. This is in accordance with the repurchase, covering existing option plans, announced on 23 February 2011. The consideration of this repurchase was €27.6 million.

The total number of shares repurchased under this program to date is 4,233,622 shares for a total consideration of €184.3 million.