X0508 4 2023-12-06 0000045012 HALLIBURTON CO HAL 0001595098 McKeon Timothy 3000 N. SAM HOUSTON PKWY E HOUSTON TX 77032 0 1 0 0 Senior VP and Treasurer 0 Common Stock 2023-12-06 4 F 0 551 37.37 D 53252 D Common Stock 2023-12-06 4 F 0 1063 37.71 D 52189 D Option to Buy Common Stock 50.62 2013-12-04 2023-12-04 Common Stock 5600 0 D Option to Buy Common Stock 31.44 2018-12-05 2028-12-05 Common Stock 8700 8700 D Option to Buy Common Stock 43.38 2017-12-06 2027-12-06 Common Stock 5800 5800 D Option to Buy Common Stock 53.54 2016-12-07 2026-12-02 Common Stock 5100 5100 D Option to Buy Common Stock 38.95 2015-12-02 2025-12-02 Common Stock 8300 8300 D Option to Buy Common Stock 40.75 2014-12-03 2024-12-03 Common Stock 8500 8500 D Shares transferred to Halliburton Company for payment for Federal tax withholding obligations on lapse of restrictions on shares issued under the Stock and Incentive Plan. Said Plan permits Reporting Person to satisfy withholding tax obligation by transferring unrestricted shares to the Issuer. The stock vested on December 4, 2023 and is related to stock granted on December 4, 2019. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 4, 2023 was $37.37. Shares were withheld for tax reporting on December 6, 2023. The stock vested on December 2, 2023 and is related to stock granted on December 2, 2020. December 2, 2023 was a non-market date. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 1, 2023 was $37.71. Shares were withheld for tax reporting on December 6, 2023. Stock option expired December 4, 2023. /s/ Sarah I. Rubenfeld, by Power of Attorney 2023-12-08