Syngenta AG (SYT)

Basel, Switzerland, October 4, 2006

Syngenta announced today that its corn rootworm trait, Agrisure™ RW, has received registration approval from the US Environmental Protection Agency (EPA). Syngenta will launch for sale corn seed containing Agrisure RW for the 2007 growing season in the USA, the world’s largest corn market.

“The approval of Agrisure RW in this fast-growing biotech market is a major step in our strategy to bring all three of the leading input traits to the corn market,” says Jeff Cox, Head of Syngenta Global Corn and Soybeans. “This new high-performing trait offers growers industry-leading control of rootworm while delivering full yield potential.”

Agrisure RW will be available to US growers as a single trait and stacked with glyphosate tolerance through elite hybrids from Garst^®, Golden Harvest^® and NK^®. Syngenta also plans to market the trait for use in other leading seed brands through its GreenLeaf Genetics joint venture U.S. registration is pending for its Agrisure RW trait stacked with corn borer enabling the commercialization of the triple stack of glyphosate tolerance, corn borer and rootworm resistance.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs some 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Basel, Switzerland, October 3, 2006

Syngenta announced today that its new fungicide Revus™, developed under the code 446, has received its first registrations in Europe (Austria) and Asia (South Korea). Further registrations in other markets are targeted for the 2007 season. Global peak sales are expected to exceed $100 million annually.

Revus sets new standards providing best-in-class, weatherproof and long-lasting protection against late blight in potatoes and tomatoes, as well as downy mildew in vines and vegetable crops. Results from a large number of field trials conducted around the world show that Revus provides consistent performance even under extreme disease pressure.

“Revus is a significant innovation for growers. This new technology further strengthens Syngenta’s leading fungicide portfolio for high-value crops offering growers a complete range of disease control solutions” said John Atkin, Chief Operating Officer of Syngenta Crop Protection. “We already successfully launched two new products, Axial^® and Avicta^®, for the 2006 season, Revus is the third and we have another five crop protection products planned for launch by 2012.”

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs more than 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Basel, Switzerland, September 6, 2006

Syngenta announced today that it intends to launch a EUR 500 million Eurobond with an intermediate maturity, subject to market conditions. Proceeds from this issue will be utilized to refinance a bond which was repaid at maturity in July this year and for general corporate purposes.

Domenico Scala, Chief Financial Officer, commented: "With this transaction we benefit from both favorable market conditions and strong investor appetite for bonds from high quality issuers".

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs more than 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Syngenta – September 6, 2006

Basel, Switzerland, June 1, 2006

Syngenta announced today an agreement with International Seed Holdings L.P. to acquire Emergent Genetics Vegetable A/S (EGV) based in Odense, Denmark. EGV is an established vegetable seed company specialized in breeding and marketing of selected vegetables crops.

EGV focuses primarily on spinach, cucumber, cabbage and cauliflower. Its products are sold internationally under three well-known brands - “Daehnfeldt™”, “Ohlsens Enke™” and “Hurst™”. For the fiscal year ended in September 2005, EGV reported sales of DKK 100m ($17m). The financial terms of the transaction were not disclosed.

“This acquisition further strengthens our global germplasm pool and supports our leadership position in vegetable seeds,” said André Goig, Global Head of Vegetables Seeds for Syngenta. “We value highly the continuity of the management team and look forward to working with them to enhance the product and service offer for the customers.”

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs more than 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Syngenta – June 1, 2006 / Page 1 of 1

Basel, Switzerland, May 24, 2006

On February 23, 2006 Syngenta issued put options giving shareholders the right to sell to the company one Syngenta AG registered share for 30 options at a price of CHF 234 per share. 99,659,925 options were issued.

The exercise period closed on May 23, with a total of 98,408,790 put options (98.7%) declared for exercise. On this basis Syngenta expects to repurchase 3,280,293 shares on May 29. The repurchased shares will be proposed for cancellation at the 2007 Annual General Meeting.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs more than 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Basel, Switzerland, April 19, 2006

Syngenta and the ETH Zurich Foundation today announced the creation of a scholarship foundation for PhD students conducting research projects at ETH Zurich in the area of plant science.

The Syngenta Plant Science Scholarship Foundation is being created in honor of its former Chairman Heinz Imhof. The endowment is expected to provide two PhD scholarships per year. The ETH Zurich Foundation and Syngenta intend to award the first scholarships by the end of this year.

“The Syngenta Plant Science Scholarship Foundation is an important investment in the education of plant science students in Switzerland,” said Martin Taylor, Chairman of Syngenta. “In honor of our former Chairman Heinz Imhof, who devoted a major part of his professional life to the progress of plant science, it is also a recognition of the outstanding quality of ETH’s research capability.”

“This gift is a significant contribution to public research from a technology-based world leader in plant science,” said Professor Ernst Hafen, President of the ETH and Vice-Chairman of the Board of Trustees of the ETH Foundation. “Syngenta is an organization that values the quality of our post-graduate programs and the growing importance of plant science in Switzerland.”

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs more than 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

The ETH Zurich Foundation is the fund raising organization of ETH Zurich. ETH Zurich is the Swiss Federal Institute of Technology Zurich, a science and technology university with an outstanding research record. ETH Zurich forms a community of 18,000 people from 80 nations. About 360 professors teach mainly in the technical, mathematical and natural sciences areas and carry out research that is highly valued worldwide. Twenty-one Nobel Laureates are connected with ETH Zurich. Further information is available at www.ethz.ch/index.

Syngenta – April 19, 2006 / Page 1 of 2

Basel, Switzerland, 11 April 2006

Syngenta announced today the launch of a $100m venture fund, LSP BioVentures, based in Boston to be managed by Life Sciences Partners (LSP), a biotech venture capital firm. Funds will be invested over a three to five year period as appropriate opportunities arise.

David Jones, Head of Business Development at Syngenta, said: “This Fund will invest in growth companies and technology start-up opportunities. The investment scope of the Fund is crop biotechnology, crop protection, professional products and new growth areas such as biomaterials and biofuels. Along with sound financial returns, we aim to secure early cooperation with emerging innovators in our sector.”

“We are excited about cultivating creative opportunities through this new Fund and, in particular, look forward to working with Syngenta,” said Martijn Kleijwegt, Managing Partner of LSP. “We expect LSP BioVentures to attract and support entrepreneurial talent and technology that will benefit from being in a ventures-driven environment.”

By appointing LSP as the Fund manager, Syngenta selected a leading venture capital company with an outstanding track record of success in investing in technology-based growth companies. Since 1988, LSP’s management has invested in over 40 companies, and has contributed to the launch of biotech companies such as Qiagen, Rhein Biotech and Crucell. Including the new fund, LSP has $450m under management.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs more than 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

LSP (Life Sciences Partners) is a pan-European life science venture group with offices in Amsterdam, Munich and Boston. The group has invested in over 40 life sciences companies since 1988 and stood at the basis of companies such as Crucell, Rhein Biotech, Pharming and Qiagen. Recent exits include Devgen (Euronext), Jerini (Frankfurt Stock Exchange), DNAge (sold to Pharming) and KuDOS (sold to AstraZeneca). Current portfolio companies include BioXell (Italy), Celmed (Canada), IDEA (Germany), Octoplus (Netherlands), OMS (Belgium), Santarus (USA), and Zealand (Denmark). The LSP group has $ 450m under management. Further information is available at www.lspvc.com.

Syngenta – 11 April 2006 / Page 1 of 2

Basel, Switzerland, 06 April 2006

Syngenta announced today that Carsten Tilger is appointed Head of Communication & Public Affairs based in Basel. He reports to CEO Michael Pragnell.

Carsten Tilger originally joined Hoechst AG in Frankfurt in 1997, became Head of Media Relations at Aventis SA, Strasbourg, in 2000 and was named Head of Corporate Communications at Aventis in 2003. From 2005, he headed communications for Europe’s largest cable network operator, Kabel Deutschland, in Munich. Carsten Tilger has an MA in economics and was trained as a business journalist.

He succeeds Rainer von Mielecki who, after 15 years in leading communication roles with the company, has decided to pursue other opportunities.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs more than 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Syngenta – 06 April 2006 / page 1 of 1

Basel, Switzerland, 28 February 2006

Syngenta today opened a technology center and broke ground for an additional production plant at its Gramoxone® facility in Nantong, Province of Jiangsu, PRC.

The new technology center in China has been established to provide technical support for additional local production and global sourcing. The 1600 square meter facility has four advanced laboratories for analysis and process development.

On the same site, the company also broke ground for a new manufacturing facility to meet growing demand for its modern insecticide portfolio. This is expected to become operational by mid 2007.

Participating in the opening ceremony, John Atkin, COO, Syngenta Crop Protection said: “These latest two projects at our Nantong site will significantly expand our capability to manufacture cost-competitive products that meet the highest standards. They will further strengthen our position in the growing Asian market”.

The Syngenta Nantong site was established in 1998 and is one of the largest agrochemical facilities in China. Since its opening in 2001, the site was granted numerous awards for safety, environmental performance and technology.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs more than 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Syngenta – 28 February 2006 / Page 1 of 1

Basel, Switzerland, 22 February 2006

On February 9 Syngenta announced that it will grant one free put option per Syngenta registered share held on February 22, 2006.

Shareholders may sell one Syngenta registered share to the company with every 30 options held; the strike price has been set at CHF 234.00. The exercise date is May 23 with settlement on May 29, 2006.

The put options will be listed on SWX Swiss Exchange (SWX) and will be freely tradable between February 23 and May 22, 2006, the last day of trading.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs more than 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Syngenta – 22 February 2006 / Page 1 of 1