Shareholder Contacts

Switzerland

Shareholder Services
Syngenta AG
P.O. Box
CH-4002 Basel

Tel: +41 (0)61 323 9492 / +41 (0)61 323 1286
Fax: +41 (0)61 323 5461
shareholder.services@syngenta.com

For shareholder data and ordering Annual Reports:

SIX SAG AG
Syngenta Share Register
P.O. Box
CH-4601 Olten
Tel: +41 (0)58 399 6133
Fax: +41 (0)58 499 6193
syngenta.aktienregister@sag.ch

Share Deposit Syngenta AG
c/o SIX SAG AG
P.O. Box
CH-4601 Olten
Tel: +41 (0)58 399 3663
Fax: +41 (0)58 499 3971
syngenta.aktionaersdepots@sag.ch

United States

Depositary for ADRs:

Syngenta AG
c/o The Bank of New York Mellon
P.O. Box 358516
USA-Pittsburgh, PA 15252-8516

Tel: +1-888-253-7068 / from within the US
Tel: +1-201-680-6825 / from outside the US
Web Site: www.adrbnymellon.com