Oestreich was named chairman in November 2007 and has been instrumental in developing long-term business and growth strategy for Pioneer. He plans to remain active in business following his retirement, working with Pioneer and others to further increase agriculture productivity.
"Dean’s contributions, from his early days as a plant breeder to his leadership roles across the organization, have helped shape the successful business Pioneer is today," says James C. Borel, DuPont executive vice president. "He has dedicated his career to improving agriculture, and we look forward to tapping into his expertise and leadership in the future."
Oestreich joined Pioneer in 1974 as a corn breeder and quickly moved up the ranks to leadership positions in information management, production operations, international sales operations, and North America business management. He was named a Pioneer vice president in 1999 and became the 10th president of Pioneer in January 2004.