Dean C. Oestreich Chairman – Pioneer Hi-Bred and Vice President - DuPont

Dean C. Oestreich is chairman of Pioneer Hi-Bred and vice president – DuPont.

He joined Pioneer in 1974 as a corn breeder. Mr. Oestreich held positions in Information Management between 1980 and 1990. He became director of Worldwide Parent Seed in 1990. After three years in this role, Mr. Oestreich was named Supply Management director responsible for seed production operations in Latin America, Africa, Asia, Middle East, and Pacific.

He was named vice president for the Africa, Middle East, Asia and Pacific business in 1999. He became vice president of global production operations in 2001 and was named vice president and business director, North America Operations in 2002. In January 2004, Mr. Oestreich became president of Pioneer. He was named to his current position in November 2007.

He is a director for the Chinese Cultural Center of America. He is a member of the Iowa Business Council and serves on the executive committee of the Biosciences Alliance of Iowa, as well as the board of directors for the Civic Center of Greater Des Moines.

He received a degree in agronomy from the University of Minnesota.

10/09

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