X0508 4 2024-06-28 0000045012 HALLIBURTON CO HAL 0001841752 Smith Maurice S 3000 N. SAM HOUSTON PARKWAY E. HOUSTON TX 77032 1 0 0 0 0 Stock Equivalent Units 2024-06-28 4 A 0 966.974 A Common Stock 966.974 4917.423 D 12/2023 Restricted Stock Units Common Stock 4871.340 4871.340 D 03/2023 Restricted Stock Units Common Stock 3893.270 3893.270 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 quarter. 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. The stock equivalents are attributable to quarterly fees and are based on the closing price on June 27, 2024 of $33.61. 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 dividend equivalent units through June 30, 2024. /s/ Sarah I. Rubenfeld, by Power of Attorney 2024-07-02