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Jeffrey A. Miller, Chairman of the Board, President, and Chief Executive Officer, since January 2019.

On December 3, 2025, the Company's Board of Directors appointed Jeffrey Shannon Slocum as Executive Vice President and Chief Operating Officer of Halliburton, effective January 1, 2026. Mr. Slocum, Director, Executive Vice President and Chief Operating Officer, since January 2026; President, Eastern Hemisphere, March 2023 to December 2025; Senior Vice President, Global Business Development and Marketing, January 2020 to February 2023.

Mr. Eric J. Carre, Executive Vice President and Chief Financial Officer, since May 2022. Executive Vice President, Global Business Lines, May 2016 to April 2022.

Mr. Van H. Beckwith, Executive Vice President, Secretary and Chief Legal Officer of Halliburton Company, since December 2020; Senior Vice President and General Counsel, January 2020 to December 2020 and Partner, Baker Botts L.L.P., January 1999 to December 2019.

William E. Albrecht, President and CEO, Moncrief Energy, LLC. Current Public Company Directorships- Chairman of the Board, Vital Energy (formerly Laredo Petroleum Inc.) (since 2020). Former Public Company Directorships(within last five years)- Chairman of the Board, California Resources Corporation (2014-2020) and Lead Independent Director, Valaris Inc. (2019-2021). Other Directorships and Memberships- Director, Terra Energy Partners; Director Certified, National Association of Corporate Directors; Board Leadership Fellow, National Association of Corporate Directors.

Murry S. Gerber, Former Executive Chairman of the Board, EQT Corporation. Current Public Company Directorships- BlackRock, Inc. (since 2000) and United States Steel Corporation (since 2012). Other Directorships and Memberships- Board of Trustees, Pittsburgh Cultural Trust.

Janet L. Weiss, Former President, BP Alaska. Current Public Company Directorships- Tourmaline Oil Corp. (since 2020). Other Directorships and Memberships- Director, First National Bank Alaska and Director, Northwest University.

Robert A. Malone, Executive Chairman, President and Chief Executive Officer, First Sonora Bancshares, and The First National Bank of Sonora, Texas (dba, Sonora Bank). Current Public Company Directorships- Non-Executive Chairman of the Board, Peabody Energy (since 2016) and Director (since 2009) and Teledyne Technologies (since 2015). Former Public Company Directorships (within last five years): BP Midstream Partners GP LLC, the general partner of BP Midstream (2017-2022).

Ms. Tobi M. Edwards Young, General Counsel, Saronic Technologies. Senior Vice President of Legal and Chief Corporate Affairs Officer, Cognizant Technology Solutions. Other Directorships and Memberships- Board, Information Technology Industry Council; Board, Chamber of Commerce, U.S. India Business Council (USIBC); Board, US Chamber Litigation Center; Co-chair, Global Women's Democracy Network, International Republican Institute.

On December 2, 2025, the Board of Directors of Halliburton Company appointed Timothy A. Leach as a member of the Board, with an initial term beginning immediately. Mr. Leach, Former Advisor to the Chief Executive Officer, ConocoPhillips. Current Public Company Directorships: ConocoPhillips (since 2021). Other Directorships and Memberships: Director Emeritus and Advisor to the Board and Executive Committee of the Permian Strategic Partnership, Board of Visitors for The University of Texas MD Anderson Cancer Center, Board of the Scharbauer Foundation, Advisory Board of the Caesar Kleberg Wildlife Research Institute.

On December 3, 2025, the Board appointed Rami Yassine as President, Eastern Hemisphere of the company, effective January 1, 2026. Mr. Yassine, President, Eastern Hemisphere, since January 2026. Senior Vice President, Middle East and North Africa, May 2024 to December 2025. Senior Vice President, Drilling and Evaluation, January 2022 to April 2024. Vice President, Sperry Drilling, January 2021 to December 2021.

Ms. Jill D. Sharp, Senior Vice President, Internal Assurance Services, since January 2022; Vice President, Internal Assurance Services, September 2021 to December 2021; Vice President, Finance - Western Hemisphere, October 2016 to August 2021.

Lawrence J. Pope, Executive Vice President and Chief Administrative Officer, since January 2026. Executive Vice President of Administration and Chief Human Resources Officer, January 2008 to December 2025.

Timothy M. McKeon, Senior Vice President and Treasurer, since January 2022. Vice President and Treasurer, January 2014 to December 2021.

Ms. M. Casey Maxwell, President, Western Hemisphere, since February 2026; Senior Vice President, North America Land, July 2024 to January 2026; Vice President, Argentina, July 2023 to June 2024; Vice President, Permian Basin, January 2019 to June 2023.

On July 9, 2025, Halliburton's Board of Directors appointed Stephanie Holzhauser as Senior Vice President and Chief Accounting Officer of Halliburton, effective July 16, 2025. Ms. Holzhauser, Senior Vice President and Chief Accounting Officer, since July 2025. Vice President, Finance, September 2021 to July 2025. Senior Director, Global Business Lines, October 2014 to August 2021.