HALLIBURTON CO — Director's Dealing 2026

Jan 12, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: HALLIBURTON CO (HAL)
CIK: 0000045012
Period of Report: 2026-01-08

Reporting Person: Slocum Jeffrey Shannon (Director, Director, EVP and COO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-01-08	Common Stock	F	7912	$29.60	Disposed	211317.952	Direct
2026-01-09	Common Stock	S	23895	$32.30	Disposed	187422.952	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Option to Buy Common Stock	$49.61	2028-01-02	Common Stock (12090)	12090	Direct
Option to Buy Common Stock	$55.68	2027-01-03	Common Stock (3722)	3722	Direct

Footnotes

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 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.

F3: The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on August 7, 2025.