HALLIBURTON CO — Director's Dealing 2026

Jan 2, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: HALLIBURTON CO (HAL)
CIK: 0000045012
Period of Report: 2025-12-30

Reporting Person: Smith Maurice S (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-12-30	Stock Equivalent Units	$	A	1211.885	Acquired		Common Stock (1211.885)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
12/2025 Restricted Stock Units	$		Common Stock (7485)	7485	Direct
12/2024 Restricted Stock Units	$		Common Stock (6264.53)	6264.53	Direct
12/2023 Restricted Stock Units	$		Common Stock (5070.76)	5070.76	Direct
03/2023 Restricted Stock Units	$		Common Stock (4052.66)	4052.66	Direct

Footnotes

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 quarter. 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 quarterly dividends and a portion are attributable to quarterly fees and are based on the closing price on December 24, 2025 of $28.03 and December 30, 2025 of $28.49.

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 December 30, 2025.