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  • Title
    CEO and President
  • Affiliation
    Occidental Petroleum
  • Age
    56

Until April, no woman had ever headed a major U.S. energy explorer. That changed when 35-year industry veteran ­Hollub landed the top spot at $12.5 billion Occidental. Less cheery: A mineral engineer by training, she ascends to the top as the worst oil bust in decades has gouged revenue and jobs ­in the industry (Occidental’s net sales sank 35% last year). Going forward, Hollub has vowed to put particular emphasis on development in and around the Permian Basin, the largest oilfield in the U.S. and a vital profit driver for the company.

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Personal Information

Previous Rank-
Newcomer?
yes

Company Financials (2015, or most recently completed fiscal year)

Revenues ($B)12.5
Profits ($B)-7.83
Market Value as of 8/26/16 ($M)
58952