Fourth Supplemental Indenture, dated as of December 10, 2020 between Southwestern Energy Company and The Bank of New York Mellon Trust Company, N.A., as trustee

THIS FOURTH SUPPLEMENTAL INDENTURE (“Fourth Supplemental Indenture”), dated as of December 10, 2020, among (i) SOUTHWESTERN ENERGY COMPANY, a Delaware corporation (the “Company”), (ii) A.W. REALTY COMPANY, LLC, a Texas limited liability company, ANGELINA GATHERING COMPANY L.L.C., a Texas limited liability company, SWN DRILLING COMPANY, LLC, a Texas limited liability company, SWN E & P SERVICES, LLC, a Texas limited liability company, SWN ENERGY SERVICES COMPANY, LLC, a Texas limited liability company, SWN INTERNATIONAL, LLC, a Delaware limited liability company, SWN MIDSTREAM SERVICES COMPANY, LLC, a Texas limited liability company, SWN PRODUCER SERVICES, LLC, a Texas limited liability company, SWN PRODUCTION COMPANY, LLC, a Texas limited liability company, SWN WATER RESOURCES COMPANY, LLC, a Texas limited liability company, and SWN WELL SERVICES, LLC, a Texas limited liability company (each Person in this clause (ii), an “Existing Guaranteeing Subsidiary,” and together, the “Existing Guaranteeing Subsidiaries”), each, a subsidiary of the Company, (iii) BLUE RIDGE MOUNTAIN RESOURCES, INC., a Delaware corporation, ECLIPSE GP, LLC, a Delaware limited liability company, ECLIPSE RESOURCES I, LP, a Delaware limited partnership, ECLIPSE RESOURCES-OHIO, LLC, a Delaware limited liability company, ECLIPSE RESOURCES-PA, LP, a Delaware limited partnership, SWN MIDSTREAM SERVICES COMPANY, LLC, a Texas limited liability company, and TRIAD HUNTER, LLC, a Delaware limited liability company (each Person in this clause (iii), an “Additional Guaranteeing Subsidiary,” and together, the “Additional Guaranteeing Subsidiaries,” and together with the Existing Guaranteeing Subsidiaries, the “Guaranteeing Subsidiaries”), each a subsidiary of the Company, and (iv) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as trustee under the Indenture referred to below (the “Trustee”).

WHEREAS, the Company has heretofore executed and delivered to the Trustee an indenture (the “Base Indenture”), dated as of March 5, 2012, a first supplemental indenture (the “First Supplemental Indenture”), dated as of November 29, 2017, a second supplemental indenture (the “Second Supplemental Indenture”), dated as of April 26, 2018, and a third supplemental indenture (the “Third Supplemental Indenture,” and the Base Indenture as supplemented by the First Supplemental Indenture, the Second Supplemental Indenture and the Third Supplemental Indenture, the “Indenture”), dated as of September 17, 2018, providing for the issuance of 4.10% Senior Notes due 2022 (the “Notes”);

WHEREAS, Section 3.10 of the Indenture provides that if any of the Company’s Subsidiaries that is not a Note Guarantor guarantees, becomes a borrower or guarantor under, or grants any Lien to secure any obligations pursuant to (i) the Senior Credit Facility or any future Credit Facility, or (ii) any other indebtedness for money borrowed in excess of $500.0 million, then the Company shall cause such Subsidiary to become a Note Guarantor by executing a supplement to the Indenture and delivering such supplement to the Trustee promptly;

WHEREAS, the Additional Guaranteeing Subsidiaries have been added or are expected to be added as guarantors to the Senior Credit Facility (as defined in the Base Indenture); and

WHEREAS, all acts and requirements necessary to make this Fourth Supplemental Indenture a legal, valid and binding obligation of the Company have been done;

WHEREAS, the Company has requested and hereby requests that the Trustee join with the Company and the Guaranteeing Subsidiaries in the execution of this Fourth Supplemental Indenture and the Company has provided the Trustee with a Board Resolution authorizing the execution of and approving this Fourth Supplemental Indenture; and

WHEREAS, pursuant to Section 9.1 of the Indenture, the Trustee is authorized to execute and deliver this Fourth Supplemental Indenture.

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, each Guaranteeing Subsidiary and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows:

1.Capitalized Terms. Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

2.Guarantee. Each Additional Guaranteeing Subsidiary hereby provides an unconditional Note Guarantee on the terms and subject to the conditions set forth in the Indenture including, but not limited to, Article 10 thereof.

3.No Recourse Against Others. An incorporator, director, officer, employee, stockholder or controlling Person, as such, of the Company shall not have any liability for any obligations of the Company under the Notes, the Indenture, this Fourth Supplemental Indenture or any Note Guarantee or for any claim based on, in respect of or by reason of such obligations or their creation. By accepting a Note, each Holder waives and releases all such liability.

4.Governing Law. THIS FOURTH SUPPLEMENTAL INDENTURE AND THE NOTES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

5. Counterparts. This Fourth Supplemental Indenture may be executed in any number of counterparts, each of which when so executed shall be deemed an original; and all such counterparts shall together constitute but one and the same instrument. Delivery of an executed counterpart of this Fourth Supplemental Indenture by facsimile or electronic transmission shall be equally as effective as delivery of an original executed counterpart of this Fourth Supplemental Indenture. Any party delivering an executed counterpart of this Fourth Supplemental Indenture by facsimile or electronic transmission also shall deliver an original executed counterpart of this Fourth Supplemental Indenture, but the failure to deliver an original

executed counterpart shall not affect the validity, enforceability and binding effect of this Fourth Supplemental Indenture.

The exchange of copies of this Fourth Supplemental Indenture and of signature pages that are executed by manual signatures that are scanned, photocopied or faxed or by other electronic signing created on an electronic platform (such as DocuSign) or by digital signing (such as Adobe Sign) that is acceptable to the Trustee shall constitute effective execution and delivery of this Fourth Supplemental Indenture for all purposes. Signatures of the parties hereto that are executed by manual signatures that are scanned, photocopied or faxed or by other electronic signing created on an electronic platform (such as DocuSign) or by digital signing (such as Adobe Sign) that is acceptable to the Trustee shall be deemed to be their original signatures for all purposes of this Fourth Supplemental Indenture as to the parties hereto and may be used in lieu of the original.

6.Headings. The headings of the Sections of this Fourth Supplemental Indenture have been inserted for convenience of reference only, are not intended to be considered a part hereof and shall not modify or restrict any of the terms or provisions hereof.

7.The Trustee. The Trustee shall not be responsible and makes no representation as to the validity, sufficiency or adequacy of this Fourth Supplemental Indenture, and it shall not be responsible for the recitals or statements in this Fourth Supplemental Indenture or the Indenture, all of which are made solely by the Company and the Guaranteeing Subsidiaries, and the Trustee assumes no responsibility for their correctness. 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 the Notes and this Fourth Supplemental Indenture or fully and with like effect as if set forth in full herein.

IN WITNESS WHEREOF, the parties hereto have caused this Fourth Supplemental Indenture to be duly executed and attested, all as of the date first above written.