Disclosure announcement transmitted by euro adhoc. The issuer is
responsible for the content of this announcement.

Eindhoven, July 31, 2003 - Johann Ostermayer resigned from his
position as a member of the board effective by July 31, 2003. The
decision was made conjointly with the company's supervisory board.

end of announcement        euro adhoc 31.07.2003

Further inquiry note:

Catalis N.V.
Sarah McTweed
Pinewood Studios
Iver, Buckinghamshire
Slo oNH
United Kingdom
Tel: +44 1753 78 33 30
Fax: +44 1753 78 33 32

Branche: Semiconductors & active components
ISIN: NL0000233625
WKN: 927093
Index:
Börsen: Frankfurter Wertpapierbörse / regulated dealing
Niedersächsische Börse zu Hannover / free trade
Berliner Wertpapierbörse / free trade
Hamburger Wertpapierbörse / free trade
Börse Düsseldorf / free trade
Baden-Württembergische Wertpapierbörse / free trade