HALLIBURTON CO — Director's Dealing 2026

Jan 5, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: HALLIBURTON CO (HAL)
CIK: 0000045012
Period of Report: 2026-01-02

Reporting Person: Richard Mark (President - Western Hemisphere)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-01-02	Common Stock	A	41156	$29.60	Acquired	488160.517	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Option to Buy Common Stock	$34.48	2026-01-04	Common Stock (28604)	0	Direct
Option to Buy Common Stock (12/2018)	$27.14	2028-12-20	Common Stock (43924)	43924	Direct
Option to Buy Common Stock (01/2018)	$49.61	2028-01-02	Commom Stock (24019)	24019	Direct
Option to Buy Common Stock	$55.68	2027-01-03	Common Stock (17119)	17119	Direct

Footnotes

F1: 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: 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: Includes 2,013.910 shares of stock accumulated through dividend reinvestment as of December 31, 2025.

F4: Stock option expired January 4, 2026.