For more than 40 years, Cynthia (CJ) Warner has been a leader in the traditional and renewable energy sectors, holding key roles in technology development, operations, business development, strategy, environment, health and safety. Currently, She serves as president and CEO for Renewable Energy Group, Inc. (REG) and as a member of REG’s board of directors.

Prior to REG, Ms. Warner served as executive vice president, operations for Andeavor (formerly Tesoro). She oversaw Andeavor’s refining; logistics; and environment, health, safety and security groups, overseeing strategic growth initiatives and providing leadership that promoted safe, reliable execution and drove operating efficiency and effectiveness. Prior to Tesoro, Ms. Warner served as chairman and CEO of Sapphire Energy, where she oversaw development of technology to produce oil from algae, successfully building and placing into operation one of the largest algae farms in the world.

She was named a Fortune 2020 Businessperson of the Year. Ms. Warner also serves as a board member for the Columbia University Center on Global Energy Policy and is a member of the board of directors for Sempra Energy. She is a member of the National Petroleum Council and the board of visitors of the Vanderbilt University School of Engineering.