HALLIBURTON CO (HAL) Insider Transactions

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F1 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 The stock vested on October 29, 2026 and is related to stock granted on October 29, 2021. The closing price of Halliburton Company's Common Stock on the New York Stock Exchange on October 29, 2026 was $35.90. Shares were withheld for tax reporting on October 30, 2026.

F3 Includes 146.199 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the period ending June 30, 2026.

References: F1, F2, F3

Reported filing row; may be amended. Do not sum filings blindly.

F1 Each restricted stock unit represents a right to receive one share of the Company common stock.

F2 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.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 The security converts to common stock on a one-for-one basis.

F2 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.

F3 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.

F4 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 September 23, 2026 of $33.01 and September 29, 2026 of $31.54.

F5 Each restricted stock unit represents a right to receive one share of the Company common stock.

F6 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.

F7 Includes stock equivalent units through September 30, 2026.

References: F1, F2, F4, F3

Reported filing row; may be amended. Do not sum filings blindly.

F1 The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on May 19, 2026.

F2 Includes 361.118 shares of stock accumulated through dividend reinvestment as of August 31, 2026.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on May 8, 2026.

F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.00 to $35.43, 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.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on May 8, 2026.

F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.00 to $35.255, 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.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on May 13, 2026.

F2 Includes 844.595 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the period ending March 31, 2026.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 The security converts to common stock on a one-for-one basis.

F2 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.

F3 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.

F4 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.

F5 Each restricted stock unit represents a right to receive one share of the Company common stock.

F6 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.

F7 Includes stock equivalent units through June 30, 2026.

References: F1, F2, F4, F3

Reported filing row; may be amended. Do not sum filings blindly.

F1 The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on March 18, 2026.

F2 Includes 243.855 shares of stock accumulated through dividend reinvestment as of June 22, 2026.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

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

F2 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.

References: F1, F2