RNS Number:9715S
Syngenta AG 
08 December 2003



Disclosure of share ownership



The shareholding in Syngenta of Morgan Stanley Investment Management Ltd.,
London exceeds the threshold value of 5%



Basel, Switzerland, December 8, 2003



Based on article 20 of the Swiss Stock Exchange Act, Syngenta AG has received
the following notification from Morgan Stanley Investment Management Ltd.,
London:



Morgan Stanley Investment Management Limited, 25 Cabot Square, Canary Wharf,
London E14 4QA reported an exceeding of the reporting threshold value of 5% and
is holding a total of 6'880'253 Ordinary Shares of Syngenta AG corresponding to
6.112% of the share capital.



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



Syngenta AG

Basel, Switzerland, December 8, 2003


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