28. Rex Tillerson
28. Rex Tillerson
Chairman and CEO, Exxon Mobil

Under Tillerson, Exxon has been the most efficient operator and best capital allocator among supermajor oil companies. It's probably the most shareholder-friendly oil giant as well: Over the past five years, Exxon has paid nearly $40 billion in dividends and repurchased $130 billion in stock, according to Morningstar. Exxon is also emerging as the preferred partner for the national oil companies that control most of the world's reserves. Latest evidence: In September, Exxon and Russian oil company Rosneft announced a joint venture to explore and develop reserves in Russia and the U.S.


By Richard McGill Murphy, contributor @FortuneMagazine - Last updated November 17 2011: 5:58 PM ET
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