NuStar Chairman and St. Mary’s alumnus Bill Greehey (B.B.A. ’60) was ranked near the top of The Harvard Business Review list of the 100 Best-Performing CEOs in the World.

Based his tenure as CEO of Valero, Greehey was ranked 12th among U.S. CEOs, and 31st among all CEOs in the world.  In the energy industry, he ranked second among U.S. CEOs and fifth worldwide.

The independent and unsolicited study ranked the CEOs of more than 3,000 publicly traded companies from 37 countries on key performance indicators such as shareholder return and change in market capitalization in the period from 1997 to 2010. The study noted that between 1997, when Valero spun off its natural gas and pipeline operations to form a new, independent refining company, and 2005, when Greehey retired as CEO, Valero enjoyed a country-adjusted total shareholder return of 721%; an industry-adjusted total shareholder return of 629%; and a $36 billion increase in market capitalization.

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