Execution Version

HALLIBURTON COMPANY

HALLIBURTON OPERATIONS FINANCE COMPANY, LLC

FIFTH SUPPLEMENTAL INDENTURE

(6.75% Notes, as defined herein)

FIFTH SUPPLEMENTAL INDENTURE (this “Fifth Supplemental Indenture”), dated as

of July 1, 2025, by and among Halliburton Company, a Delaware corporation (the “Company”),

Halliburton Operations Finance Company, LLC, a Texas limited liability company and a wholly

owned subsidiary of the Company (the “Finance Company”), and The Bank of New York Mellon

Trust Company, N.A. (as successor to Chase Bank of Texas, National Association, as successor to

Texas Commerce Bank National Association), as trustee (the “Trustee”) under the Indenture (as

defined below).

W I T N E S S E T H

WHEREAS, the Company and Trustee have heretofore executed an Indenture dated as of

December 1, 1996 (the “Base Indenture”), as supplemented by (i) the First Supplemental Indenture

dated December 5, 1996 relating to the 6.75% Medium-Term Notes Due Nine Months or More

From Date of Issue, Series A, of the Company (the “6.75% Notes” or the “Securities”), and (ii) the

Second Supplemental Indenture dated December 12, 1996. The Base Indenture, as supplemented

by the foregoing supplemental indentures listed herein and this Fifth Supplemental Indenture, is

referred to as the “Indenture”;

WHEREAS, the Company formed the Finance Company with the Secretary of State of the

State of Texas on May 21, 2025 and each of the Company and the Finance Company desire that

the Finance Company become a co-obligor with respect to all of the Company’s obligations

pursuant to the Securities and under the Indenture;

WHEREAS, Sections 8.1(c) and (d) of the Base Indenture provide, respectively, that the

Company and the Trustee may amend or supplement the Indenture or the Securities without the

consent of any Holder to, among other things, add to the covenants of the Company for the

protection of the Holders of the Securities , as well as such further provisions as the Company may

deem necessary or desirable that do not adversely affect the interests of the Holders; and

WHEREAS, all things necessary to make this Fifth Supplemental Indenture a valid and

legally binding agreement of the Company and the Finance Company have been heretofore

completed.

NOW THEREFORE, in consideration of the foregoing and for other good and valuable

consideration, the receipt of which is hereby acknowledged, the Company, the Finance Company

and the Trustee mutually agree to amend the Indenture as follows:

ARTICLE I

SECTION 1.01.CO-OBLIGOR OBLIGATION OF THE FINANCE COMPANY.

Effective as of the date hereof, the Finance Company hereby expressly assumes as a co-obligor

the due and punctual payment of the principal of and premium, if any, and interest on, all of the

Securities, and the due and punctual performance of all of the covenants and conditions of the

Indenture. The Finance Company, in addition to the Company, will be deemed to be the

“Company” for purposes of the Indenture, with the same effect as if the Finance Company and the

Company had each been named as the “Company” in the Indenture. Nothing herein shall be

construed to release the Company from any of its obligations under the Indenture or under the

Securities, including its obligation to pay the principal of and premium, if any, and interest on, the

Securities.

ARTICLE II

SECTION 2.01.  NOTICE. Any notice or communication provided or permitted by the

Indenture to be made upon, given or furnished to, or filed with, the Finance Company shall be

addressed as follows:

Halliburton Operations Finance Company, LLC

3000 North Sam Houston Parkway East

Houston, Texas 77032

Attention: (281) 871-4455

Facsimile No.: Chief Legal Officer

SECTION 2.02.RATIFICATION. Except as expressly amended and supplemented

by this Fifth Supplemental Indenture, the Indenture shall remain unchanged and in full force and

effect. This Fifth Supplemental Indenture shall be construed as supplemental to the Indenture and

shall form a part thereof.

SECTION 2.03.  GOVERNING LAW. This Fifth Supplemental Indenture shall be

governed and construed in accordance with the laws of the State of New York.

SECTION 2.04.  COUNTERPART ORIGINALS. The parties may sign any number

of copies of this Indenture. Each signed copy shall be deemed to be an original, but all of them

together represent the same agreement.

SECTION 2.05.  THE TRUSTEE. The recitals in this Fifth Supplemental Indenture

are made by the Company and the Finance Company only and not by the Trustee, and all of the

provisions contained in the Indenture in respect of the rights, privileges, immunities, powers and

duties of the Trustee shall be applicable in respect of this Fifth Supplemental Indenture as fully

and with like effect as if set forth herein in full. The Trustee makes no representation as to the

validity or adequacy of this Fifth Supplemental Indenture.

SECTION 2.06. CAPITALIZED TERMS. Capitalized terms used herein without

definition shall have the meanings assigned to them in the Indenture.

SECTION 2.07.  TRUST INDENTURE ACT CONTROLS. If any provision of this

Fifth Supplemental Indenture limits, qualifies or conflicts with the duties imposed by operation of

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Section 318(c) of the Trust Indenture Act of 1939, as amended (15. U.S. Code §§ 77aaa-77bbbb),

the imposed duties shall control.

SECTION 2.08.  EFFECT OF HEADINGS. The Article and Section headings herein

have been inserted for convenience of reference only, are not to be considered a part hereof and

shall in no way modify or restrict any of the terms or provisions hereof.

SECTION 2.09.PROVISIONS FOR THE SOLE BENEFIT OF PARTIES AND

HOLDERS. Nothing in the Indenture, as supplemented, amended and modified by this Fifth

Supplemental Indenture, or in the Securities, expressed or implied, is intended or shall be construed

to confer upon, or to give or grant to, any person or entity, other than the Company, the Finance

Company, the Trustee, the Paying Agent and the registered owners of the Securities, any legal or

equitable right, remedy or claim under or by reason of the Indenture or any covenant, condition or

stipulation thereof, and all covenants, stipulations, promises and agreements in the Indenture

contained by or on behalf of the Company or the Finance Company shall be for the sole and

exclusive benefit of the Company, the Finance Company, the Trustee, the Paying Agent and the

registered owners of the Securities.

[Remainder of Page Intentionally Left Blank]

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Docusign Envelope ID: 24793486-1434-49F6-A916-7AD7222DBBF7

IN WITNESS WHEREOF, the parties hereto have caused this Fifth Supplemental

Indenture to be duly executed as of the day and year first above written.

HALLIBURTON COMPANY

By:

Name: Timothy M. McKeon

Title: Senior Vice President and Treasurer

HALLIBURTONOPERATIONSFINANCE

COMPANY, LLC

By:

Name: Timothy M. McKeon

Title: Senior Vice President and Treasurer

[Signature Page to Fifth Supplemental Indenture]

THE  BANK  OF  NEW  YORK  MELLON  TRUST

COMPANY, N.A., as Trustee

By:

Name:

Title:

Marie A. Hattinger

Vice President

[Signature Page to Fifth Supplemental Indenture]