MR. ECHOLS serves as non-executive Chairman of the Board and as a member of all Board committees. He served as Executive Vice President and Chief Financial Officer of Centex Corporation, a residential construction company, from 2000 to 2006, when he retired. Prior to joining Centex, he spent 22 years with Arthur Andersen LLP and served as Managing Partner, Audit Practice for the North Texas, Colorado, and Oklahoma Region from 1997 to 2000. Mr. Echols is a member of the American Institute of Certified Public Accountants and the Texas Society of CPAs (inactive). Mr. Echols has been engaged in private investments since 2006. He is a member of the board of directors and the audit committee of HF Sinclair Corporation, an independent energy company. He served as a member of the board of directors of HollyFrontier Corporation, an independent petroleum refiner, from 2009 until the establishment of HF Sinclair Corporation as its parent company in 2022. From 2014 to 2025, he served on the board of directors EnLink Midstream Manager, LLC, a company that owns interests in EnLink Midstream, LLC, which is engaged in the gathering, transmission, treating, processing, and marketing of natural gas, natural gas liquids, and crude oil. Age: 70 Director Since: 2007 In addition to having gained substantial managerial experience as an executive officer of Centex, Mr. Echols possesses important skills and experience gained through his service in public accounting. His service on the boards of other significant companies provides the Board with additional perspective on the Company s operations.