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Cynthia (CJ) Warner

Energy Executive Independent Director, Chevron Lead Independent Director, Sempra


Cynthia (CJ) Warner is a seasoned energy executive with experience in both traditional and renewable energies. For more than 40 years, CJ has been driving growth and improvements to deliver energy ever more safely, reliably, and sustainably. She has led operations globally for large refiners including Andeavor and BP as well as scale-up and commercialization ventures in novel renewable energy technologies.

Most recently, CJ was the President and CEO of Renewable Energy Group (REG) – a leading international producer of low carbon, bio-based diesel – where she grew the company’s market value substantially prior to its acquisition by Chevron in a record advanced fuels transaction.

Prior to REG, Ms. Warner served in a variety of executive roles including Executive Vice President, Operations for Andeavor (formerly Tesoro), Chairman and CEO of Sapphire Energy (developing a novel algae-to-oil system),  and as Group Vice President of Global Refining and GVP of Health, Safety, Security, Environmental and Technology for British Petroleum (BP).

She was named a 2020 Businessperson of the Year by Fortune Magazine, listed as one of the top 20 CEO’s that year. She is a featured leader in the 2008 book Becoming a Resonant Leader: Develop Your Emotional Intelligence (Harvard Business Press) and was named one of Fast Company’s 100 most creative people in business in 2010.

Ms. Warner serves on the Board of Directors for Chevron and is Lead Independent Director for Sempra Energy. She is also a member of the Columbia University Advisory board for the Center for Global Energy Policy (CGEP);  the National Petroleum Council; and the Vanderbilt University School of Engineering Academy of Distinguished Alumni.

She currently resides in Nevada, IA with her husband where they are developing a portion of their property into a pollinator reserve.


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