FORTUNE's annual ranking of America's leading businesswomen


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5. Ellen Kullman
Ellen Kullman
Chair of the board and CEO
DuPont
2011 rank: 4
Age: 56
Kullman, who became CEO of DuPont in 2009, continues her restructuring of the 210-year-old chemical company. Earlier this year she sold its autopaints business for $4.9 billion; analysts expect the CEO to push the company deeper into agriculture and nutrition.
From the October 8, 2012 issue
How we pick the Power 50
The list is compiled by FORTUNE editors, who consider four criteria: the size and importance of the woman's business in the global economy, the health and direction of the business, the arc of the woman's career (resume and runway ahead), and societal and cultural influence.