February 10, 2011
Sumitomo Chemical Restructures Latin America Business Organization
Business restructuring increases focus, resources on growing markets

Sumitomo Chemical Co., Ltd. (SCC) today announced a restructuring that will create a newly
named business unit focused on providing crop protection solutions in the Latin American
agricultural markets. The new business unit, Sumitomo Chemical Latin America (SCLA) will
focus on providing Latin American growers with leading crop management products and active
ingredients developed, manufactured and marketed by the new SCLA organization.

SCC products and active ingredients have had a growing presence in Latin America since 2004
while operating as the Latin American Division of Valent U.S.A. Corporation. Considering thefuture growth potential of the Crop Protection market in Latin America, SCC has now
established the business unit, SCLA, which will be headquartered out of Sumitomo Chemical do
Brazil (SCB) office located in Sao Paulo, Brazil, with employees located in all of the key Latin
America markets.

Mike Donaldson, president and chief executive officer for Valent U.S.A., Valent BioSciences
Corporation and Region Americas, who will oversee SCLA organization, said “the newlyorganized business unit and regional headquarters based out of Brazil will allow SCC to work
more closely with regional customers.”“For years, we have been very successful in helping this region’s growers protect theirinvestments and maximize crop potential through our products and active ingredients—including
our growing number of traditional chemical and biorational product options,” Donaldson said.
“By increasing our presence and resources in Latin America, we will have even closer access tocustomers in order to improve our service and better understand and anticipate their uniquecrop needs.”
Donaldson will continue to oversee the SCC subsidiaries and business units operating forbiorational products globally through Valent BioSciences, and for traditional chemical productsin Canada, United States and Mexico through Valent U.S.A., and Central America, Caribbean
and South America through SCLA. As part of the restructuring, the SCLA business unit will soonname a vice president of crop protection to lead the new operations. Two veterans of the SCC

operating unit in Latin America —Jose P. Fabretti and Luis Paulo Antonialli—will also be
important members of the new business unit leadership. Fabretti will oversee the regional sales,
marketing and business development efforts; Antonialli will manage the region’s productdevelopment and regulatory affairs group. Both Fabretti and Antonialli will report to the vicepresident. The Sumitomo Chemical Environmental Health and the Animal Nutrition business
units will continue to operate from the SCB Sao Paulo office location under separate business
unit.

About Sumitomo Chemical
Sumitomo Chemical is one of Japan’s leading chemical companies, offering a diverse range ofproducts globally in the fields of basic chemicals, petrochemicals, fine chemicals, IT-relatedchemicals and materials, agricultural chemicals, and pharmaceuticals. The company’s
consolidated net sales for fiscal 2009 were US$17.4 billion (JPY1.62 trillion). For additional
information, visit the company’s website at www.sumitomo-chem.co.jp/english/.
About Valent BioSciences Corporation
Valent BioSciences Corporation is headquartered in Libertyville, Illinois and is the leader in thedevelopment, manufacturing and commercialization of biorational products, with sales in over95 countries around the world. Products include microbial pesticides and plant growth regulators
used in agricultural and forestry markets, microbial based products for use in Public Healthmarkets, and insecticides used in household consumer markets. Valent BioSciences distributes
products direct and through Sumitomo Chemical Regional companies around the world. For
additional information, visit the company’s website at www.valentbiosciences.com.
About Valent U.S.A. Corporation
Valent, headquartered in Walnut Creek, Calif., develops and markets products in the UnitedStates and Canada that protect agricultural crops, enhance crop yields, improve food quality,
beautify the environment and safeguard public health. Valent products include a well-known lineof quality herbicide, insecticide, fungicide and plant growth regulator products for agriculturaland professional use. It differentiates itself from its competitors as a leader in marketing andsales of both biorational and traditional chemical products. For additional information, visit thecompany’s website at www.valent.com.

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