For immediate release
April 26, 2011
Announcement by Valent BioSciences Corporation
Valent BioSciences Corporation, headquartered in Libertyville, Illinois, USA,and a subsidiary of Sumitomo Chemical Company, Limited, issued theattached announcement on April 25, 2011.

For Immediate Release- April 25, 2011
Valent BioSciences Corporation Announces Plan toConstruct Fermentation Manufacturing Facility in Osage,
Iowa
LIBERTYVILLE, Ill.—April 25, 2011—Valent BioSciences Corporation (VBC) announced
today that it will construct a new state-of-the-art fermentation manufacturing facility inOsage, Iowa, for the production of biorational agricultural, horticultural, public health andforestry products. This facility will be the largest single investment of any company inthe world to support the manufacturing and formulating of biorational products.
Fermentation is a critical process in the manufacturing of biorational products and uses
naturally occurring microorganisms to produce low-risk environmentally-compatible
products for use in targeted markets around the world.
Michael Donaldson, VBC president and chief executive officer, said the facility
represents an estimated $150 million investment, with full-scale commercial operations
to begin in 2014. Until then, manufacturing will continue at the current facility in North
Chicago, Illinois. VBC’s corporate headquarters will remain in Libertyville.
“Valent BioSciences Corporation has been working on plans to relocate ourmanufacturing operations for some time,” Donaldson said. “After reviewing an extensive
list of options, we are excited about our plans to construct a state-of-the-art fermentation
manufacturing facility in Iowa that will produce product with the stringent, high-quality
requirements that our customers trust and rely upon. Osage was a logical selection dueto VBC’s longtime relationship with the A to Z Drying, Inc. operation and the favorable
financial and labor environment in Iowa.”
The 73-acre campus will include a 130,000-square-foot building along with associatedprocessing and purification equipment, offices, warehouses and quality assurance
laboratories. The facility will have annual fermentation capacity in excess of 15 million
gallons. A total of 89 jobs will be created as a result of this project. Groundbreaking isexpected in 2012.
VBC is the worldwide leader in development, commercialization and manufacture ofbiorational products, which include bioinsecticides, bionematicides and plant growth
regulators. VBC has a diverse market presence, selling into agriculture, horticulture,public health and forestry markets in over 90 countries.

“The new manufacturing facility will support not only the growth of our base businesses,
but also the innovative new products in our pipeline which include emerging market
segments such as crop stress management and physiological seed enhancement,”
Donaldson said. “The success of VBC has been based not only on maintaining strict
manufacturing, formulation and packaging standards, but also on our world-classmarketing and business management approach, working side by side with traditional
chemical products to bring the best solutions to our customers.”
VBC is a subsidiary of Sumitomo Chemical Company, Limited, headquartered in Tokyo,
Japan. Sumitomo is the only company in the world with a strategic focus in bothtraditional and biorational agricultural products.

# # #About Valent BioSciences Corporation: Valent BioSciences Corporation is headquartered in
Libertyville, Illinois, and is the worldwide leader in the development, manufacturing andcommercialization of biorational products, with sales in over 90 countries around the world.
Products include microbial pesticides and plant growth regulators used in agricultural andforestry markets, microbial-based products for use in public health markets, and insecticides
used in household consumer markets. Valent BioSciences distributes products direct andthrough Sumitomo Chemical regional companies around the world and is an ISO 9001:2008
Certified Company. For additional information, visit the company’s website atwww.valentbiosciences.com.
About Sumitomo Chemical Company, Limited: Sumitomo Chemical Company is one ofJapan’s leading chemical companies, offering a diverse range of products globally in the fieldsof basic chemicals, petrochemicals, fine chemicals, IT-related chemicals 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/.

Media Contact:
Barbara Wendling
Valent BioSciences Corporation
847-968-4793
Email: barbara.wendling@valentbiosciences.com