HAL · Halliburton Co

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.

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 March 25, 2026 of $38.63, June 24, 2026 of $33.90, and June 29, 2026 of $34.09.

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 sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on March 18, 2026.

Includes 243.855 shares of stock accumulated through dividend reinvestment as of June 22, 2026.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.15 to $41.38, inclusive. The Reporting Person undertakes to provide to Halliburton Company, any security holder of Halliburton Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 3, 2026.

Includes 656.906 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the period ending March 31, 2026.

The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 3, 2026.

The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 12, 2025.

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.

A portion of the stock equivalents are attributable to quarterly dividends and a portion are attributable to quarterly fees and are based on the closing price on March 25, 2026 of $38.63 and March 30, 2026 of $39.26.

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 sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on February 13, 2025.

The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on August 7, 2025.

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

The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 12, 2025.

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 Performance Unit shares were issued on February 27, 2026. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on February 27, 2026 was $36.00. Shares were withheld for tax reporting on March 5, 2026

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 Performance Unit shares were issued on February 27, 2026. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on February 27, 2026 was $36.00. Shares were withheld for tax reporting on March 5, 2026.

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 Performance Unit shares were issued on February 27, 2026. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on February 27, 2026 was $36.00. Shares were withheld for tax reporting on March 5, 2026.

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 Performance Unit shares were issued on February 27, 2026. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on February 27, 2026 was $36.00. Shares were withheld for tax reporting on March 5, 2026.

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 Performance Unit shares were issued on February 27, 2026. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on February 27, 2026 was $36.00. Shares were withheld for tax reporting on March 5, 2026.

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 Performance Unit shares were issued on February 27, 2026. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on February 27, 2026 was $36.00. Shares were withheld for tax reporting on March 5, 2026.

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 Performance Unit shares were issued on February 27, 2026. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on February 27, 2026 was $36.00. Shares were withheld for tax reporting on March 5, 2026.

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 Performance Unit shares were issued on February 27, 2026. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on February 27, 2026 was $36.00. Shares were withheld for tax reporting on March 5, 2026.

Shares of common stock issued to the reporting person on February 27, 2026, upon achievement of the performance criteria and vesting of performance share units granted on January 3, 2023, pursuant to the Halliburton Company Performance Unit Program.

Shares of common stock issued to the reporting person on February 27, 2026, upon achievement of the performance criteria and vesting of performance share units granted on January 3, 2023, pursuant to the Halliburton Company Performance Unit Program.

Shares of common stock issued to the reporting person on February 27, 2026, upon achievement of the performance criteria and vesting of performance share units granted on January 3, 2023, pursuant to the Halliburton Company Performance Unit Program.

Shares of common stock issued to the reporting person on February 27, 2026, upon achievement of the performance criteria and vesting of performance share units granted on January 3, 2023, pursuant to the Halliburton Company Performance Unit Program.

Shares of common stock issued to the reporting person on February 27, 2026, upon achievement of the performance criteria and vesting of performance share units granted on January 3, 2023, pursuant to the Halliburton Company Performance Unit Program.

Shares of common stock issued to the reporting person on February 27, 2026, upon achievement of the performance criteria and vesting of performance share units granted on January 3, 2023, pursuant to the Halliburton Company Performance Unit Program.

Shares of common stock issued to the reporting person on February 27, 2026, upon achievement of the performance criteria and vesting of performance share units granted on January 3, 2023, pursuant to the Halliburton Company Performance Unit Program.

Shares of common stock issued to the reporting person on February 27, 2026, upon achievement of the performance criteria and vesting of performance share units granted on January 3, 2023, pursuant to the Halliburton Company Performance Unit Program.

Options disposed of through exercise pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 13, 2025.

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

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

Options disposed of through exercise pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 13, 2025.

The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on August 7, 2025.

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

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 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.

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 January 2, 2026, January 3, 2026, and January 4, 2026 and is related to stock granted on January 4, 2021, January 3, 2022, January 3, 2023, January 2, 2024, and January 2, 2025. January 3, 2026 and January 4, 2026 were non-market dates. 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.

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 January 2, 2026, January 3, 2026, and January 4, 2026 and is related to stock granted on January 4, 2021, January 3, 2022, January 3, 2023, January 2, 2024, and January 2, 2025. January 3, 2026 and January 4, 2026 were non-market dates. 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.

The total ownership shown reflects Mr. Yassine's corrected direct beneficial ownership, as indicated on the amended Form 3/A filed January 12, 2026.

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 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.

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 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.

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 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.

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 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.

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 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.

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 January 2, 2026, January 3, 2026, and January 4, 2026 and is related to stock granted on January 4, 2021, January 3, 2022, January 3, 2023, January 2, 2024, and January 2, 2025. January 3, 2026 and January 4, 2026 were non-market dates. 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.

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 January 2, 2026, January 3, 2026, and January 4, 2026 and is related to stock granted on January 4, 2021, January 3, 2022, January 3, 2023, January 2, 2024, and January 2, 2025. January 3, 2026 and January 4, 2026 were non-market dates. 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.

The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on August 8, 2025.

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.

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.

Includes 166.852 shares of stock accumulated through dividend reinvestment as of December 31, 2025.