Christine Breves has served as a director of the company since November 1, 2022. She retired from United States Steel Corporation in December 2022. Most recently, she was executive vice president, business transformation. Prior to that role, she was senior vice president & chief financial officer for United States Steel Corporation from November 2019 through August 2022 where she had responsibility for all financial processes including internal and external reporting, tax, treasury, investor relations, and several other functions including strategic materials and global procurement, S&OP, Information Technology, and commercial pricing. Ms. Breves held senior roles at United States Steel after joining USS in 2013 as vice president and chief procurement officer. These roles included vice president and chief supply chain officer, and senior vice president - manufacturing support and chief supply chain officer. In addition to the finance areas, Breves had accountability for global procurement, S&OP, and the USS railroad subsidiary, Transtar and provided corporate engineering support for maintenance improvement and commercial coordination. Previously, Ms. Breves was with Alcoa Corporation for 14 years, where she held various executive positions including chief procurement officer. Prior to Alcoa, Ms. Breves was with Alumax Inc. which was acquired by Alcoa in 1998. In Alumax, she held increasingly responsible positions in accounting, procurement, and maintenance. Ms. Breves graduated with a bachelor's degree in business administration from the College of Charleston and a master's degree in business administration. Ms. Breves is a member of the board of directors of Sylvamo Corporation where she serves on the audit committee and the management development and compensation committee. She is a member of the board of directors of MPLX where she serves on the audit and conflicts committees. She is a past president of Goose Creek Rotary, chairperson of CAPS Research Advisory Board and is a past member of the national Board of Directors of the Institute for Supply Management and is a recipient of ISM's Shipman Medal. Board Committees: Member of the Audit Committee Member of the Nominating, Governance and Sustainability Committee Other Public Company Boards: Sylvamo Corporation (NYSE: SLVM) MPLX LP (NYSE: MPLX) Ms. Breves brings to the Board: Executive experience in finance and accounting, strategy development and execution, business transformation, operations and maintenance, supply chain, enterprise risk management, and human capital management.