Richard Mark

SEC source: 0001767591-26-000004 · wk-form4_1767998785.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 480,691.517

F1 · shares: 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.

F2 · price: The stock vested on January 2, 2026 and January 3, 2026 and is related to stock granted on January 3, 2022, January 3, 2023, January 2, 2024, and January 2, 2025. January 3, 2026 was a non-market date. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on January 2, 2026 was $29.60. Shares were withheld for tax reporting on January 8, 2026.

SEC source: 0001767591-26-000002 · wk-form4_1767654045.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 488,160.517

F1 · shares: Shares awarded pursuant to the Halliburton Company Stock and Incentive Plan. Said Plan provides for the surrender of common stock to the Issuer to satisfy withholding tax obligations.

F2 · price: The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on the January 2, 2026 grant date was $29.60.

F3 · balance_after: Includes 2,013.910 shares of stock accumulated through dividend reinvestment as of December 31, 2025.

SEC source: 0001767591-25-000008 · wk-form4_1765223512.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 444,990.607

F1 · shares: 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.

F2 · price: The stock vested on December 2, 2025 and is related to stock granted on December 2, 2020. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 2, 2025 was $26.91. Shares were withheld for tax reporting on December 4, 2025.

SEC source: 0001767591-25-000005 · wk-form4_1763061292.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 452,373.607

F1 · kind: The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on August 13, 2025.

F2 · balance_after: Includes 901.551 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the period ending March 31, 2025.

F3 · balance_after: Includes 10,193.461 shares of stock accumulated through dividend reinvestment as of September 30, 2025.

SEC source: 0001062993-25-004885 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 601,278.595

F1 · shares: 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.

F2 · price: The Performance Unit shares were issued on March 3, 2025. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on March 3, 2025 was $25.01.

SEC source: 0001062993-25-004657 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 642,733.595

F1 · kind: Shares of common stock issued to the reporting person on March 3, 2025, upon achievement of the performance criteria and vesting of performance share units granted on January 3, 2022, pursuant to the Halliburton Company Performance Unit Program.

SEC source: 0001062993-25-000647 · form4.xml · nonDerivative · entry 2

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 537,385.595

F1 · shares: 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.

F3 · price: The stock vested on January 3, 2025 and is related to stock granted on January 3, 2022. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on January 3, 2025 was $27.68. Shares were withheld for tax reporting on January 7, 2025.

SEC source: 0001062993-25-000647 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 539,673.595

F1 · shares: 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.

F2 · price: The stock vested on January 3, 2025 and is related to stock granted on January 3, 2023. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on January 3, 2025 was $27.68. Shares were withheld for tax reporting on January 7, 2025.

SEC source: 0001062993-25-000564 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 541,129.595

F1 · shares: 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.

F2 · price: The stock vested on January 2, 2025 and is related to stock granted on January 2, 2024. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on January 2, 2025 was $27.73. Shares were withheld for tax reporting on January 6, 2024.

SEC source: 0001062993-25-000385 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 542,948.595

F1 · shares: Shares awarded pursuant to the Halliburton Company Stock and Incentive Plan. Said Plan provides for the surrender of common stock to the Issuer to satisfy withholding tax obligations.

F2 · price: The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on the January 2, 2025 grant date was $27.73.

F3 · balance_after: Includes 2,456.151 shares of stock accumulated through dividend reinvestment as of December 31, 2024.

SEC source: 0001062993-24-020304 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 501,298.444

F1 · shares: 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.

F2 · price: he stock vested on December 4, 2024 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, 2024 was $30.60. Shares were withheld for tax reporting on December 6, 2024.

SEC source: 0001062993-24-020189 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 505,438.444

F1 · shares: 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.

F2 · price: The stock vested on December 2, 2024 and is related to stock granted on December 2, 2020. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 2, 2024 was $31.56. Shares were withheld for tax reporting on December 4, 2024.

F3 · balance_after: Includes 692.137 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the period ending March 31, 2024.

F4 · balance_after: Includes 5,650.755 shares of stock accumulated through dividend reinvestment as of September 30, 2024.

SEC source: 0001062993-24-005434 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 506,478.552

F1 · shares: 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.

F2 · price: The Performance Unit shares were issued on February 27, 2024. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on February 27, 2024 was $34.96.

SEC source: 0001062993-24-004890 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 592,576.552

F1 · shares: Shares of common stock issued to the reporting person on February 27, 2024, upon achievement of the performance criteria and vesting of performance share units granted on January 4, 2021, pursuant to the Halliburton Company Performance Unit Program.

SEC source: 0001062993-24-000689 · form4.xml · nonDerivative · entry 2

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 373,776.552

F1 · shares: 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.

F3 · price: The stock vested on January 3, 2024 and is related to stock granted on January 3, 2022. Shares were withheld for tax reporting on January 5, 2024. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on January 5, 2024 was $36.57.

F4 · balance_after: On Mr. Richard's Form 4 filed January 4, 2024, there was an administrative error in the reporting of the 377,790.552 shares beneficially owned by Mr. Richard. Mr. Richard's beneficial ownership is being corrected to show that he Directly owns 373,776.552 shares of Halliburton common stock.

SEC source: 0001062993-24-000689 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 376,064.552

F1 · shares: 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.

F2 · price: The stock vested on January 3, 2024 and is related to stock granted on January 3, 2023. Shares were withheld for tax reporting on January 5, 2024. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on January 5, 2024 was $36.57.

SEC source: 0001062993-24-000388 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 377,790.552

F1 · shares: Shares awarded pursuant to the Halliburton Company Stock and Incentive Plan. Said Plan provides for the surrender of common stock to the Issuer to satisfy withholding tax obligations.

F2 · price: The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on the January 2, 2024 grant date was $36.12.

F3 · balance_after: Includes 912.873 shares of stock accumulated through dividend reinvestment as of December 31, 2023

SEC source: 0001062993-23-023215 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 346,219.679

F1 · shares: 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.

F2 · price: The stock vested on December 20, 2023 and is related to stock granted on December 20, 2018. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 20, 2023 was $36.46. Shares were withheld for tax reporting on December 26, 2023.

SEC source: 0001062993-23-022183 · form4.xml · nonDerivative · entry 2

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 348,212.679

F1 · shares: 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.

F3 · price: 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.

SEC source: 0001062993-23-022183 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 355,595.679

F1 · shares: 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.

F2 · price: 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.

F4 · balance_after: Includes 663.834 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the period ending March 31, 2023.

F5 · balance_after: Includes 2,493.548 shares of stock accumulated through dividend reinvestment as of September 30, 2023.

SEC source: 0001062993-23-006032 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 356,578.297

F1 · shares: Shares transferred to Halliburton Company for payment for federal tax withholding obligations issued under the Halliburton Company Performance Unit Program, as required by the award agreement.

F2 · price: The Performance Unit shares were issued on February 27, 2023. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on February 27, 2023 was $37.18.

SEC source: 0001062993-23-005286 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 414,121.297

F1 · shares: Shares of common stock issued to the reporting person on February 27, 2023, upon achievement of the performance criteria and vesting of performance share units granted on January 2, 2020, pursuant to the Halliburton Company Performance Unit Program.

SEC source: 0001062993-23-000596 · form4.xml · nonDerivative · entry 2

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 267,889.297

F1 · shares: 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.

F3 · price: The shares vested on January 3, 2023. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on January 3, 2023 was $37.66.

SEC source: 0001062993-23-000596 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 270,237.297

F1 · shares: 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.

F2 · price: The shares vested on January 2, 2023. January 2, 2023 was a non-market date. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 30, 2022 was $39.35.

SEC source: 0001062993-23-000442 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 271,074.297

F1 · shares: Shares awarded pursuant to the Halliburton Company Stock and Incentive Plan. Said Plan provides for the surrender of common stock to the Issuer to satisfy withholding tax obligations.

F2 · price: The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on the January 3, 2023 grant date was $37.66.

SEC source: 0001062993-22-024464 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 241,260.297

F1 · shares: 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.

F2 · price: The shares vested on December 20, 2022. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 20, 2022 was $37.42.

F3 · balance_after: Includes 351.916 shares of stock accumulated through dividend reinvestment as of December 21, 2022.

SEC source: 0001062993-22-023529 · form4.xml · nonDerivative · entry 2

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 242,938.381

F1 · shares: 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.

F3 · price: The shares vested on December 2, 2022. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 2, 2022 was $38.87.

SEC source: 0001062993-22-023529 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 250,321.381

F1 · shares: 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.

F2 · price: The shares vested on December 4, 2022. December 4, 2022 was a non-market date. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 2, 2022 was $38.87.

F4 · balance_after: Includes 1,068.406 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the periods ending March 31, 2022 and June 30, 2022.

F5 · balance_after: Includes 759.623 shares of stock accumulated through dividend reinvestment as of September 30, 2022.

SEC source: 0001062993-22-010099 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 252,633.352

F1 · kind: The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 7, 2022.

F2 · balance_after: Includes 321.444 shares of stock accumulated through dividend reinvestment as of March 31, 2022.

SEC source: 0001062993-22-007068 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 259,811.908

F1 · kind: The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 7, 2022.

SEC source: 0001062993-22-005558 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 267,311.908

F1 · kind: The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 7, 2022.

SEC source: 0001062993-22-000921 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 283,629.908

F1 · shares: 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.

F2 · price: The shares vested on January 3, 2022. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on January 3, 2022 was $23.99.

SEC source: 0001062993-22-000758 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 284,247.908

F1 · shares: 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.

F2 · price: The shares vested on January 2, 2022. January 2, 2022 was a non-market date. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 31, 2021 was $22.87.

SEC source: 0001062993-22-000596 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 285,084.908

F1 · shares: Shares awarded pursuant to the Halliburton Company Stock and Incentive Plan. Said Plan provides for the surrender of common stock to the Issuer to satisfy withholding tax obligations.

F2 · price: The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on the January 3, 2022 grant date was $23.99.

SEC source: 0001062993-21-013428 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 238,107.908

F1 · shares: 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.

F2 · price: The shares vested on December 20, 2021. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 20, 2021 was $21.80.

F3 · balance_after: Includes 230.371 shares of stock accumulated through dividend reinvestment as of December 31, 2021.

SEC source: 0001062993-21-012491 · form4.xml · nonDerivative · entry 2

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 239,907.537

F1 · shares: 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.

F3 · price: The shares vested on December 4, 2021. December 4, 2021 was a non-market date. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 3, 2021 was $22.00.

F4 · balance_after: Includes 1,308.953 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the periods ending March 31, 2021 and June 30, 2021.

F5 · balance_after: Includes 583.424 shares of stock accumulated through dividend reinvestment as of September 30, 2021.

SEC source: 0001062993-21-012491 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 242,155.16

F1 · shares: 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.

F2 · price: The shares vested on December 2, 2021. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 2, 2021 was $22.02.

SEC source: 0001062993-21-000212 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 249,538.16

F1 · shares: 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.

F2 · price: The shares vested on January 4, 2021. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on January 4, 2021 was $18.83.

SEC source: 0001062993-21-000189 · form4.xml · nonDerivative · entry 2

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 250,470.16

F1 · shares: 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.

F2 · price: The shares vested on January 2 and January 3, 2021. January 2 and January 3, 2021 were non-market dates. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 31, 2020 was $18.90.

SEC source: 0001062993-21-000189 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 251,088.16

F1 · shares: 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.

F2 · price: The shares vested on January 2 and January 3, 2021. January 2 and January 3, 2021 were non-market dates. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 31, 2020 was $18.90.

F3 · balance_after: Includes 174.803 shares of stock accumulated through dividend reinvestment as of December 31, 2020.

SEC source: 0001062993-20-006539 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 251,750.357

F1 · shares: 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.

F2 · price: The shares vested on December 20, 2020. December 20, 2020 was a non-market date. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 18, 2020 was $19.68.

SEC source: 0001062993-20-006176 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 253,781.357

F1 · shares: 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.

F2 · price: The shares vested on December 4, 2020. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on December 4, 2020 was $19.43.

SEC source: 0001062993-20-006059 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 257,921.357

F1 · shares: Shares awarded pursuant to the Halliburton Company Stock and Incentive Plan. Said Plan provides for the surrender of common stock to the Issuer to satisfy withholding tax obligations.

F2 · price: The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on the December 2, 2020 grant date was $17.61.

SEC source: 0001062993-20-005325 · form4.xml · derivative · entry 3

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,134 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Each Restricted Stock Unit represents the right to receive one share of common stock.

F6 · derivative.exercise_date: The restricted stock units vest in five equal annual installments beginning with the first anniversary of the award. Shares will be delivered to the reporting person upon vesting.

F6 · derivative.expiration_date: The restricted stock units vest in five equal annual installments beginning with the first anniversary of the award. Shares will be delivered to the reporting person upon vesting.

SEC source: 0001062993-20-005325 · form4.xml · nonDerivative · entry 2

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 164,121.357

F2 · shares: 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.

SEC source: 0001062993-20-005325 · form4.xml · nonDerivative · entry 1

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 164,961.357

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Vesting of 20% of restricted stock units granted on October 27, 2015.

F3 · balance_after: Includes 1,012.966 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the periods ended March 31, 2020.

F4 · balance_after: Includes 2,924.861 shares of stock accumulated through dividend reinvestment as of September 30, 2020.

SEC source: 0000045012-20-000021 · edgar.xml · nonDerivative · entry 5

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,889.53

F1 · shares: 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.

F4 · price: The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on the January 3, 2020 vest date was $24.76.

SEC source: 0000045012-20-000021 · edgar.xml · nonDerivative · entry 4

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 159,407.53

F1 · shares: 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.

F4 · price: The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on the January 3, 2020 vest date was $24.76.

SEC source: 0000045012-20-000021 · edgar.xml · derivative · entry 6

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,091 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Each Restricted Stock Unit represents the right to receive one share of common stock.

F6 · derivative.exercise_date: The restricted stock units vest in five equal annual installments beginning with the first anniversary of the award. Shares will be delivered to the reporting person upon vesting.

F6 · derivative.expiration_date: The restricted stock units vest in five equal annual installments beginning with the first anniversary of the award. Shares will be delivered to the reporting person upon vesting.

SEC source: 0000045012-20-000021 · edgar.xml · nonDerivative · entry 3

Richard Mark · CIK 0001767591 · President - Western Hemisphere

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 160,211.53

F1 · shares: 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.

F2 · price: The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on the January 2, 2020 vest date was $24.68