Extra Space Storage Inc.

false 0001289490 0001289490 2026-06-24 2026-06-24 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 June 24, 2026 (Date of Report (Date of Earliest Event Reported)) EXTRA SPACE STORAGE INC. (Exact Name of Registrant as Specified in Its Charter) Maryland 001-32269 20-1076777 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification Number) 2795 East Cottonwood Parkway , Suite 300 Salt Lake City , Utah 84121 (Address of Principal Executive Offices) (801) 365-4600 (Registrant’s Telephone Number, Including Area Code) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934 Title of each class Trading symbol Name of each exchange on which registered Common Stock, $0.01 par value EXR New York Stock Exchange Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ 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. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. Exhibit Number Description 1.1 Underwriting Agreement, dated June 24, 2026, among Extra Space Storage Inc., Extra Space Storage LP, ESS Holdings Business Trust I, ESS Holdings Business Trust II, and Wells Fargo Securities, LLC, J.P. Morgan Securities LLC and Truist Securities, Inc. as representatives of the several underwriters named therein. 99.1 Press Release issued by Extra Space Storage Inc. on June 24, 2026. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. EXTRA SPACE STORAGE INC. Date: June 25, 2026 By /s/ Gwyn McNeal Name: Gwyn McNeal Title: Executive Vice President and Chief Legal Officer