Ms. Roberts served as President of Chevron Pipe Line Company from 2006 until her retirement in 2011. She previously served as the President of Chevron Global Power Generation from 2003 to 2006, in addition to various technical and management positions during her thirty-six year career with Chevron. Ms. Roberts began her career as a chemist and research scientist. Ms. Roberts previously served as a director of Enbridge, Inc. from 2015 to 2018, Black Hills Corporation from 2011 to 2025, and MSA Safety Incorporated from 2013 to 2025. Key Contributions to the Board: Ms. Roberts brings management, business development, operational, environmental and safety, marketing, and strategy development expertise with a scientific background and extensive global experience at Chevron. She provides an informed perspective to the Board on regulatory and operational matters faced by a complex international company. She also has broad experience across a range of geographies, including Asia, Europe, and Central America.