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OCCIDENTAL PETROLEUM CORP (OXY)

Sector: Energy

Ticker	Position	Age	Qualifications and Experience	Committee Memberships	Filing Year

WILLIAM R. KLESSE

Director information for OXY

Ticker	Position	Age	Qualifications and Experience	Committee Memberships	Filing Year
OXY	Director; Chair	79	["Former Chief Executive Officer and Chairman of the Board, Valero Energy","Former Chief Executive Officer of Valero Energy Corporation","Former Chairman of the Board of Valero Energy Corporation","Vice Chairman of Valero since 2005","President of Valero from 2008 to 2013","Executive Vice President and Chief Operating Officer of Valero","Executive Vice President of Refining and Commercial Operations at Valero","Started career in energy industry at Diamond Shamrock Corporation","Trustee of the University of Dayton","Trustee of Texas Biomedical Research Institute","Trustee of United Way of San Antonio and Bexar County","Board member of The Briscoe Western Art Museum","Chairman of the endowment of The Briscoe Western Art Museum","Board member of Christus Santa Rosa Children’s Hospital Foundation","Bachelor’s degree in Chemical Engineering from the University of Dayton","MBA with an emphasis in Finance from West Texas A&M University"]	["Environmental, Health and Safety","Compensation","Environmental, Health and Safety Committee"]	2026

Biography

Biography sourced from the proxy statement filing.

Mr. Klesse is the former Chief Executive Officer and former Chairman of the Board of Valero Energy Corporation (Valero), an international manufacturer and marketer of transportation fuels, other petrochemical products and power. He joined the Valero board as Vice Chairman in 2005 and served as Chairman of the Board from 2007 until his retirement in December 2014. From 2006 to May 2014, he served as Chief Executive Officer of Valero and served as President fro