X0609 4 2026-09-30 0 0000045012 HALLIBURTON CO HAL 0001841752 Smith Maurice S false 3000 N. SAM HOUSTON PARKWAY E. HOUSTON TX 77032 1 0 0 0 0 Stock Equivalent Units 2026-09-30 4 A 0 1162.045 A Common Stock 1162.045 16010.137 D 12/2025 Restricted Stock Units Common Stock 7594.55 7594.55 D 12/2024 Restricted Stock Units Common Stock 6356.22 6356.22 D 12/2023 Restricted Stock Units Common Stock 5144.98 5144.98 D 03/2023 Restricted Stock Units Common Stock 4111.97 4111.97 D The security converts to common stock on a one-for-one basis. Stock equivalents acquired under the Halliburton Company Directors' Deferred Compensation Plan reported on a pro-rata basis to reflect Issuer's Plan period. Said Plan is an ongoing securities acquisition plan. The stock equivalent units were accrued under the Company's Directors' Deferred Compensation Plan and are settled in the Company's common stock following cessation as a director. A portion of the stock equivalents are attributable to dividends and a portion are attributable to quarterly fees and are based on the closing price on September 23, 2026 of $33.01 and September 29, 2026 of $31.54. Each restricted stock unit represents a right to receive one share of the Company common stock. The restricted stock units vest in one year on the first anniversary of the award. Shares will be delivered to the reporting person either upon vesting, or if reporting person elected to defer receipt, following cessation as a director. Includes stock equivalent units through September 30, 2026. /s/ Sarah I. Rubenfeld, by Power of Attorney 2026-09-30