Extra Space Storage, Inc.

Item 8.01 Other Events. On June 24, 2026, Extra Space Storage LP (the “Issuer”), Extra Space Storage Inc. (the “Company”), ESS Holdings Business Trust I (“EHBT I”) and ESS Holdings Business Trust II (“EHBT II” and, together with the EHBT I and the Company, the “Guarantors”) entered into an underwriting agreement (the “Underwriting Agreement”) with Wells Fargo Securities, LLC, J.P. Morgan Securities LLC and Truist Securities, Inc., as representatives of the several underwriters named therein (the “Underwriters”), with respect to an underwritten public offering of $550 million aggregate principal amount of the Issuer’s 4.900% senior notes due 2032 (the “Notes”). The Notes will be fully and unconditionally guaranteed by the Guarantors. The description of the Underwriting Agreement in this Current Report on Form 8-K is a summary and is qualified in its entirety by the full text of the Underwriting Agreement. The press release announcing the pricing of the Notes is filed as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Certain of the Underwriters and their affiliates have engaged in, and may in the future engage in from time to time, investment banking and other commercial dealings in the ordinary course of business with the Company, for which they have received customary fees and commissions. In addition, affiliates of certain of the Underwriters are lenders under the Company’s secured line of credit and/or senior unsecured line of credit. The Company intends to use the net proceeds from the offering to repay amounts outstanding from time to time under its lines of credit and its commercial paper program, and for other general corporate and working capital purposes, including funding potential acquisition opportunities. To the extent that the Company uses any of the net proceeds from the offering to repay indebtedness, such Underwriters or their affiliates will receive their proportionate share of any amount of the outstanding borrowings that is repaid with the net proceeds from the offering.