William Klesse – Biography
Last update: March 30, 2026Executive profile
William was Chairman of the Board & CEO at Valero Energy, and Chairman of the Board at NuStar. William Klesse joined Oxy in 2013.
William Klesse is currentlyDirector at Oxy - View - Oxy org chart
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Education
William Klesse has a Bachelor in Chemical Engineering from University of Dayton and a Master of Business Administration from Texas A&M University.
They have also studied at University of Dayton :
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They have also studied at Texas A&M University :
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The colleagues of William Klesse
Company Colleagues
- At Oxy, William Klesse has 42 colleagues including Carlos Gutierrez (Director), Avedick Poladian (Director)…
Industry Colleagues
- In the Oil & Gas industry, William Klesse has 23,396 colleagues in 1,347 companies located in 105 countries. 12,021 executive movements have been recorded in the last 12 months. Learn more about Oil & Gas.
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