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

Date of report: August 20, 2026

(Date of Earliest Event Reported)

REALTY INCOME CORPORATION

(Exact name of registrant as specified in its charter)

11995 El Camino Real, San Diego, California 92130
(Address of principal executive offices)

(858) 284-5000
(Registrant’s telephone number, including area code)

N/A
(former name or former address, if changed since last report)

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:

Securities registered pursuant to Section 12(b) of the Act:

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 August 20, 2026, Realty Income Corporation (the “Company”) entered into (i) that certain Second Amendment to Amended and Restated Term Loan Agreement (the “Wells Fargo Term Loan Agreement Amendment”) which amends its Amended and Restated Term Loan Agreement, dated as of January 22, 2024, among the Company, as Borrower, the lenders party thereto, Wells Fargo Bank, National Association, as Administrative Agent, and the other parties named therein (as amended, the “Wells Fargo Term Loan Agreement”), which provides for a $500 million term loan due August 20, 2027, and (ii) that certain First Amendment to Amended and Restated Term Loan Agreement (the “TD Term Loan Agreement Amendment” and, together with the Wells Fargo Term Loan Agreement Amendment, the “Term Loan Agreement Amendments”) which amends its Amended and Restated Term Loan Agreement, dated as of November 18, 2025, governing the multi-currency term loans which allow us to incur up to an aggregate of $1.35 billion in total borrowings and mature in January 18, 2028, among the Company, as Borrower, the lenders party thereto, Toronto Dominion (Texas) LLC, as Administrative Agent, and the other parties named therein (as amended, the “TD Term Loan Agreement” and, together with Wells Fargo Term Loan Agreement, the “Term Loan Agreements”).

The Term Loan Agreement Amendments conform certain terms of the respective Term Loan Agreements to the terms of our recently closed Fifth Amended and Restated Credit Agreement, dated as of July 10, 2026, among the Company, as Borrower, the lenders party thereto, Wells Fargo Bank, National Association, as Administrative Agent, and the other parties named therein.

The foregoing descriptions of each of the Wells Fargo Term Loan Agreement Amendment and the TD Term Loan Agreement Amendment and the Term Loan Agreements are qualified in their entirety by reference to the full and complete terms of each of the Term Loan Agreement Amendments (including the conformed copy of each Term Loan Agreement, as amended, attached thereto), which are attached hereto as Exhibit 10.1 and Exhibit 10.2, respectively, and incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

*Certain annexes and schedules have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The Company hereby undertakes to furnish supplemental copies of any of the omitted annexes and schedules upon request by the Securities and Exchange Commission; provided, however, that the Company may request confidential treatment pursuant to Rule 24b-2 of the Exchange Act for any annexes or schedules so furnished.

SIGNATURE

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.