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  • Title
    Chairman and CEO
  • Company
    DuPont
  • Age
    57
  • Last Year's Rank
    5

Her reset of DuPont (selling commodity units, moving into high-margin areas) is paying off: The stock has more than doubled during her tenure, vs. the S&P 86% rise. Nevertheless, Kullman must contend with investor Nelson Peltz, who is likely to want more units shed.