Execution Version

DII INDUSTRIES, LLC

HALLIBURTON COMPANY

HALLIBURTON OPERATIONS FINANCE COMPANY, LLC

FOURTH SUPPLEMENTAL INDENTURE

(7.60% Senior Debentures due August 2096)

FOURTH SUPPLEMENTAL INDENTURE (this “Fourth Supplemental Indenture”),

dated as of July 1, 2025, by and among DII Industries, LLC, a Delaware limited liability company

(the “Issuer”), 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 JPMorgan Chase Bank, 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 Issuer and Trustee have heretofore executed an Indenture dated as of April

18, 1996 (the “Base Indenture”), as supplemented by (i) the First Supplemental Indenture, by and

between the Issuer and the Trustee, dated August 6, 1996, relating to the 7.60% Senior Debentures

due August 2096 of the Issuer (the “Legacy Dresser Notes”), (ii) the Second Supplemental

Indenture, by and between the Issuer and the Trustee, dated October 27, 2003, and (iii) the Third

Supplemental Indenture, by and among the Issuer, the Company and the Trustee, dated December

12, 2003 (the Legacy Dresser Notes, to the extent issued under the Indenture and outstanding

thereunder, the “Securities”). The Base Indenture, as supplemented by the foregoing supplemental

indentures listed herein and this Fourth 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 Issuer, the Company and the Finance Company

desire that the Finance Company become a co-obligor with respect to all of the Issuer’s and the

Company’s respective obligations pursuant to the Securities and under the Indenture;

WHEREAS, Section 9.01(1) of the Base Indenture provides that the Issuer, the Company

and the Trustee may amend or supplement the Indenture or the Securities without the consent of

any Securityholder to, among other things, make such provisions with respect to matters or

questions arising under the Indenture as may be necessary or desirable and not inconsistent with

the Indenture or with any indenture supplemental thereto or any Board Resolution establishing any

series of Securities, provided that such amendment does not adversely affect the rights of any

Securityholders; and

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

legally binding agreement of the Issuer, 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 Issuer, 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 Issuer and the Company, will be deemed to

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

the Issuer and the Company had each been named as the “Company” in the Indenture. Nothing

herein shall be construed to release the Issuer or 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 Fourth Supplemental Indenture, the Indenture shall remain unchanged and in full force and

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

and shall form a part thereof.

SECTION 2.03.  GOVERNING LAW. This Fourth 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 Fourth Supplemental Indenture

are made by the Issuer, 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 Fourth 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 Fourth Supplemental Indenture.

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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

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

of 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 Fourth

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 Issuer, 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 Issuer, the Company or the Finance Company shall be

for the sole and exclusive benefit of the Issuer, 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 Fourth Supplemental

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

DII INDUSTRIES, LLC

By:

Name: Timothy M. McKeon

Title: Senior Vice President and Treasurer

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 Fourth 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 Fourth Supplemental Indenture]