144 0001767591 XXXXXXXX LIVE 0000045012 HALLIBURTON CO 001-03492 3000 NORTH SAM HOUSTON PARKWAY EAST 3000 NORTH SAM HOUSTON PARKWAY EAST HOUSTON TX 77032 2818712699 Richard Mark Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

160000 4443200.00 841626610 11/12/2025 NYSE Common 01/03/2018 Restricted Stock Vesting Issuer N 1 01/03/2018 Compensation Common 06/25/2018 Dividend Reinvestment Issuer N 65 06/25/2018 Cash Common 06/29/2018 ESPP Purchase Issuer N 138 06/29/2018 Cash Common 09/24/2018 Dividend Reinvestment Issuer N 72 09/24/2018 Cash Common 10/27/2018 Restricted Stock Vesting Issuer N 1196 10/27/2018 Compensation Common 12/24/2018 Dividend Reinvestment Issuer N 1 12/24/2018 Cash Common 01/02/2019 Restricted Stock Vesting Issuer N 3365 01/02/2019 Compensation Common 01/03/2019 Restricted Stock Vesting Issuer N 1490 01/03/2019 Compensation Common 01/04/2019 Restricted Stock Vesting Issuer N 2372 01/04/2019 Compensation Common 03/25/2019 Dividend Reinvestment Issuer N 351 03/25/2019 Cash Common 03/21/2022 Dividend Reinvestment Issuer N 321 03/21/2022 Cash Common 06/17/2022 Dividend Reinvestment Issuer N 323 06/17/2022 Cash Common 06/30/2022 ESPP Purchase Issuer N 36 06/30/2022 Cash Common 12/02/2022 Restricted Stock Vesting Issuer N 11377 12/02/2022 Compensation Common 12/04/2022 Restricted Stock Vesting Issuer N 6380 12/04/2022 Compensation Common 12/19/2022 Dividend Reinvestment Issuer N 352 12/19/2022 Cash Common 12/20/2022 Restricted Stock Vesting Issuer N 3128 12/20/2022 Compensation Common 01/03/2023 Restricted Stock Vesting Issuer N 9033 01/03/2023 Compensation Common 02/27/2023 Restricted Stock Vesting Issuer N 88689 02/27/2023 Compensation Common 09/25/2023 Dividend Reinvestment Issuer N 820 09/25/2023 Cash Common 12/02/2023 Restricted Stock Vesting Issuer N 11377 12/02/2023 Compensation Common 12/04/2023 Restricted Stock Vesting Issuer N 6380 12/04/2023 Compensation Common 12/20/2023 Restricted Stock Vesting Issuer N 3074 12/20/2023 Compensation Common 12/22/2023 Dividend Reinvestment Issuer N 913 12/22/2023 Cash Common 01/03/2024 Restricted Stock Vesting Issuer N 7108 01/03/2024 Compensation Common 03/25/2024 Dividend Reinvestment Issuer N 1638 03/25/2024 Cash Y 11/12/2025 08/13/2025 /s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Mark Richard