President and Chief Executive Officer Southwest Gas Holdings, Inc. Chief Executive Officer Southwest Gas Corporation. The Board determined that Mrs. Haller should serve as a director of the Company because she has a unique understanding of the Company s businesses, customers, end markets, supply chains, utility operations, talent development, policies and internal functions due to her executive positions at Southwest Gas Holdings and Southwest Gas Corporation. Ms. Haller also brings experience with environmental, regulatory and legal issues of importance to the Company. Ms. Haller has served as a member of the Board since the completion of the Centuri IPO. Ms. Haller also previously served as Chair of the Board from the completion of the Centuri IPO until September 2025. Since May 2022, Ms. Haller has served as a director and the President and Chief Executive Officer of Southwest Gas Holdings and Chief Executive Officer of Southwest Gas Corporation, Southwest Gas Holdings gas utility. She also serves as a director of Southwest Gas Holdings and several of its operating subsidiaries. Ms. Haller has announced that she will be retiring from her positions as the President and Chief Executive Officer of Southwest Gas Holdings and Chief Executive Officer of Southwest Gas Corporation, effective May 8, 2026, and from her position as director of Southwest Gas Holdings and Southwest Gas Corporation, effective as of the conclusion of Southwest Gas Holdings' annual meeting of stockholders on May 7, 2026, and that she plans to serve as an advisor to Southwest Gas Holdings following her resignation through December 31, 2026. As leader of Southwest Gas Holdings businesses, Ms. Haller is responsible for improving financial and operational performance, and implementing Southwest Gas Holdings strategy, growth initiatives and investment plans. Ms. Haller has served in multiple leadership positions during her 29-year tenure with Southwest Gas, most recently serving as Executive Vice President and Chief Legal and Administrative Officer beginning in 2019. She is a member of the State Bars of Arizona, California, and Nevada and the American Gas Association. Ms. Haller serves on the boards of directors of the Legal Aid Center of Southern Nevada, Las Vegas Global Economic Alliance and the American Gas Association and serves as the trustee of American Gas Foundation. She received a B.S. in finance from the University of Wyoming, a J.D. from Cornell Law School, and completed the Finance for Senior Executives program at Harvard Business School.