Release of an announcement according to Section 21 WpHG

[German Securities Trading Act]

2008/04/22

WKN 843002
ISIN DE0008430026

UBS AG, Zurich, Switzerland, informed us on 18 April 2008 in accordance with Section 21, para. 1 of the German Securities Trading Act (WpHG) that its share of the voting rights in our company had exceeded the threshold of 3% on 14 April 2008 and totalled 4.25% (8,762,090 voting rights). Of these, 0.14% (286,325 voting rights) are attributable to UBS AG in accordance with Section 22, para. 1, sentence 1, item 1 of the WpHG.

Munich, 22 April 2008

The Board of Management