RNS Number:0077P
Syngenta AG 
26 August 2003





Notification of share ownership



The shareholding of MFS Investment Management in Syngenta AG falls below 5%



Based on Article 20 of the Swiss Stock Exchange Act Syngenta AG has received the
following notification from a shareholder. The shareholding of MFS Investment
Management, 500 Boylston Street, Boston, Ma. 02116 USA, in Syngenta AG has
fallen below the reporting threshold value of 5%.



MFS Investment Management previously reported a 5.02% holding in Syngenta AG in
January 2003.



In compliance with Article 19 of the Swiss Stock Exchange Ordinance-FBC this
information will be published in the Swiss Official Gazette of Commerce.



Syngenta AG

Basel, Switzerland August 26, 2003




                      This information is provided by RNS
            The company news service from the London Stock Exchange
END

HOLNKAKDOBKKCFB