X0609 4 2026-05-15 0 0000045012 HALLIBURTON CO HAL 0001832674 Beckwith Van H. false 3000 NORTH SAM HOUSTON PARKWAY EAST HOUSTON TX 77032 0 1 0 0 EVP, Secretary and CLO 1 Common Stock 2026-05-15 4 S 0 198349 41.29 D 146186.49 D The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on August 13, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.15 to $41.38, inclusive. The Reporting Person undertakes to provide to Halliburton Company, any security holder of Halliburton Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4. /s/ Sarah I. Rubenfeld, by Power of Attorney 2026-05-18