EX-4.2

Exhibit 4.2

LIFE STORAGE LP,

Issuer,

LIFE STORAGE LLC,

Parent Guarantor,

and

COMPUTERSHARE TRUST COMPANY, N.A.,

Trustee

Sixth Supplemental Indenture

Dated as of July 25, 2023

Indenture

Dated as of June 20, 2016

SIXTH SUPPLEMENTAL INDENTURE, dated as of July 25, 2023 (the “Sixth Supplemental Indenture”), among LIFE STORAGE LP (the “Issuer”), a limited partnership formed under the laws of Delaware, LIFE STORAGE LLC (f/k/a LIFE STORAGE, INC.) (the “Parent Guarantor”), a limited liability company formed under the laws of Maryland and the sole owner of Life Storage Holdings LLC (f/k/a Life Storage Holdings, Inc.), the general partner of the Issuer and a limited partner of the Issuer, and COMPUTERSHARE TRUST COMPANY, N.A. (as successor to WELLS FARGO BANK, NATIONAL ASSOCIATION), as Trustee (the “Trustee”).

RECITALS OF THE ISSUER AND THE PARENT GUARANTOR

WHEREAS, the Issuer (f/k/a Sovran Acquisition Limited Partnership), the Parent Guarantor (f/k/a Sovran Self Storage, Inc.) and the Trustee are parties to an Indenture, dated as of June 20, 2016 (the “Base Indenture”), as amended and supplemented by (i) the First Supplemental Indenture, dated as of June 20, 2016 (the “First Supplemental Indenture”), (ii) the Second Supplemental Indenture, dated as of December 7, 2017 (the “Second Supplemental Indenture”), (iii) the Third Supplemental Indenture, dated as of June 3, 2019 (the “Third Supplemental Indenture”), (iv) the Fourth Supplemental Indenture, dated as of September 23, 2020 (the “Fourth Supplemental Indenture”) and (v) the Fifth Supplemental Indenture, dated as of October 7, 2021 (the “Fifth Supplemental Indenture” and, the Base Indenture as so amended and supplemented by such supplemental indentures, the “Indenture”), providing for the issuance by the Issuer from time to time of its senior unsecured debt securities (the “Securities”);

WHEREAS, the Issuer and the Parent Guarantor have entered into a merger agreement with Extra Space Storage Inc., a Maryland corporation (“Extra Space”), Extra Space Storage LP, a Delaware limited partnership (“Extra Space OP”), Eros Merger Sub, LLC, a Delaware limited liability company and a wholly owned subsidiary of Extra Space (“Extra Space Merger Sub”) and Eros OP Merger Sub, LLC, a Delaware limited liability company and a wholly owned subsidiary of Extra Space OP (“Extra Space OP Merger Sub”), pursuant to which, subject to the terms and conditions in the merger agreement, (i) Extra Space Merger Sub will merge with and into the Parent Guarantor with the Parent Guarantor continuing as the surviving entity and a wholly owned subsidiary of Extra Space (the “parent merger”) and (ii) Extra Space OP Merger Sub will merge with and into the Issuer, with the Issuer surviving the merger and becoming a wholly owned indirect subsidiary of Extra Space OP (the “partnership merger” and, together with the parent merger, the “Mergers”);

WHEREAS, Extra Space OP has offered the Holders of the Issuer’s Outstanding 3.500% Senior Notes due 2026 (the “2026 Notes”), 3.875% Senior Notes due 2027 (the “2027 Notes”), 4.000% Senior Notes due 2029 (the “2029 Notes”), 2.200% Senior Notes due 2030 (the “2030 Notes”) and 2.400% Senior Notes due 2031 (the “2031 Notes” and, collectively with the 2026 Notes, the 2027 Notes, the 2029 Notes and the 2030 Notes, the “Notes”) to exchange (the “Exchange Offers”) any and all of the Notes for corresponding series of notes issued by Extra Space OP on the terms and subject to the conditions set forth in the prospectus relating to the Exchange Offers and related solicitations of consent, including the consummation of the Mergers, dated June 16, 2023 (the “Prospectus”), forming a part of the Registration Statement on Form S-4, filed by Extra Space and Extra Space OP with the Securities and Exchange Commission (the “SEC”) on June 5, 2023 and declared effective by the SEC on June 16, 2023;

WHEREAS, Section 902 of the Base Indenture provides that, with the consent of the Holders of more than 50% in aggregate principal amount of the Outstanding Securities of each series, voting as separate classes (the “Requisite Consents”), the Issuer and the Parent Guarantor, when authorized by a Board Resolution, and the Trustee may enter into an indenture supplemental to the Indenture for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of the Indenture, subject to certain enumerated exceptions set forth therein which require the consent of the Holder of each Outstanding Security affected thereby (which such exceptions do not apply with respect to the Proposed Amendments (as defined below));

WHEREAS, in connection with the Exchange Offers, Extra Space OP has solicited, and has received, upon the terms and subject to the conditions set forth in the Prospectus, consents from Holders of more than 50% in aggregate principal amount of the Outstanding Securities of each series (the “Consenting Holders”) to certain amendments (the “Proposed Amendments”) to the Indenture as described in the Prospectus and set forth in Article One of this Sixth Supplemental Indenture;

WHEREAS, Extra Space OP has received and caused to be delivered to the Trustee evidence of the consents from the Consenting Holders to effect the Proposed Amendments to the Indenture;

WHEREAS, all requirements necessary to make this Sixth Supplemental Indenture a valid, binding and enforceable instrument in accordance with its terms have been done and performed, and the execution and delivery of this Sixth Supplemental Indenture have been duly authorized by a Board Resolution and, pursuant to Section 902 of the Base Indenture, the Issuer, the Parent Guarantor and the Trustee are authorized to execute and deliver this Sixth Supplemental Indenture; and

WHEREAS, the Issuer, the Parent Guarantor and the Trustee deem it advisable to enter into this Sixth Supplemental Indenture for the purposes of providing for the rights, obligations and duties of the Issuer, the Parent Guarantor and the Trustee with respect to the Notes and to set forth certain specific provisions with respect thereto.

NOW, THEREFORE, THIS SIXTH SUPPLEMENTAL INDENTURE WITNESSETH:

For and in consideration of the premises, the Issuer, the Parent Guarantor and the Trustee covenant and agree, for the equal and proportionate benefit of all Holders of the Notes, as follows:

Article One.

Amendments

From and after the Effective Date (as defined below), the Base Indenture, the First Supplemental Indenture, the Second Supplemental Indenture, the Third Supplemental Indenture, the Fourth Supplemental Indenture and the Fifth Supplemental Indenture are hereby amended as follows:

Section 1.01. Covenants and Other Provisions in Base Indenture. With respect to the Notes, all of the sections or provisions listed below under the Base Indenture are deleted in their entirety and replaced, respectively, with the following:

(a) Section 501(4) [Intentionally Omitted].

(b) Section 501(5) [Intentionally Omitted].

(d) Section 801 [Intentionally Omitted].

(e) Section 802 [Intentionally Omitted].

(f) Section 803 [Intentionally Omitted].

(g) Section 804 [Intentionally Omitted].

(h) Section 1005 [Intentionally Omitted].

(i) Section 1006 [Intentionally Omitted].

(j) Section 1007 [Intentionally Omitted].

(k) Section 1011 [Intentionally Omitted].

Section 1.02. Covenants in First Supplemental Indenture. Solely with respect to the 2026 Notes, all of the sections or provisions listed below under the First Supplemental Indenture relating to the 2026 Notes are deleted in their entirety and replaced, respectively, with the following:

(a) Section 3.1 [Intentionally Omitted].

(b) Section 3.2 [Intentionally Omitted].