Years on the list:
14
First appearance:
1999 (No. 32)
Last appearance:
2012 (No. 6)
Fortune's writeup from 1999: Late last year, after stints as president of Chevron Canada and Chevron International, Woertz took charge of the fourth-largest oil company's biggest division. That's $16 billion worth of refining, transporting, marketing, and selling at the pump.
NEXT: Andrea Jung