[Form 4] HALLIBURTON CO Insider Trading Activity

Rhea-AI Filing Summary

Halliburton senior vice president and treasurer Timothy McKeon reported a tax-related share transfer to the company. On January 8, 2026, 1,105 shares of Halliburton common stock were transferred to Halliburton Company to cover federal tax withholding obligations that arose when restricted stock vested under the company’s Stock and Incentive Plan. The plan allows the executive to satisfy withholding taxes by delivering unrestricted shares back to the issuer instead of paying cash.

After this withholding transaction, McKeon beneficially owned 81,631 shares of Halliburton common stock directly. He also held stock options giving the right to buy additional Halliburton shares, including options for 8,700 shares at an exercise price of $31.44, 5,800 shares at $43.38, and 5,100 shares at $53.54, each with stated expiration dates between December 2026 and December 2028. The vesting that triggered the tax withholding related to stock granted between January 2022 and January 2025, based on a closing market price of $29.60 on January 2, 2026.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

McKeon Timothy

(Last) (First) (Middle)

3000 N. SAM HOUSTON PKWY E

(Street)

HOUSTON TX 77032

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
HALLIBURTON CO [ HAL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Senior VP and Treasurer

3. Date of Earliest Transaction (Month/Day/Year)
01/08/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/08/2026		F		1,105(1)	D	$29.6(2)	81,631	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Option to Buy Common Stock	$31.44							12/05/2018	12/05/2028	Common Stock	8,700		8,700	D
Option to Buy Common Stock	$43.38							12/06/2017	12/06/2027	Common Stock	5,800		5,800	D
Option to Buy Common Stock	$53.54							12/07/2016	12/02/2026	Common Stock	5,100		5,100	D

Explanation of Responses:

1. 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.

2. 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.

Remarks:

	/s/ Sarah I. Rubenfeld, by Power of Attorney	01/09/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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