Vivmark Residential 8-K 2026-08-04

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 (Date of Earliest Event Reported): August 4, 2026

EQUITY RESIDENTIAL

(Exact Name of Registrant as Specified in its Charter)

ERP OPERATING LIMITED PARTNERSHIP

(Exact Name of Registrant as Specified in its Charter)

Registrant’s telephone number, including area code: (312) 474-1300

Not applicable

(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 (

see

General Instruction A.2. below):

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 4, 2026, Equity Residential’s operating partnership, ERP Operating Limited Partnership, an Illinois limited partnership (the “Company”), agreed to issue $600,000,000 aggregate principal amount of 4.950% Notes due October 1, 2031 (the “2031 Notes”) and $400,000,000 aggregate principal amount of 5.450% Notes due October 1, 2036 (the “2036 Notes” and, together with the 2031 Notes, the “Notes”) in a public offering. The Company agreed to sell the Notes pursuant to a Terms Agreement, dated as of August 4, 2026, among the Company and each of Morgan Stanley & Co. LLC, Wells Fargo Securities, LLC, BofA Securities, Inc., Goldman Sachs & Co. LLC and J.P. Morgan Securities LLC, as representatives of the underwriters named therein. The Notes will be issued pursuant to an Indenture, dated as of October 1, 1994, between the Company and The Bank of New York Mellon Trust Company, N.A. (formerly known as The Bank of New York Trust Company, N.A.) (as successor to J.P. Morgan Trust Company, National Association, as successor to Bank One Trust Company, N.A., as successor to The First National Bank of Chicago) (the “Trustee”), as supplemented by the First Supplemental Indenture, dated as of September 9, 2004, by and between the Company and the Trustee, as further supplemented by the Second Supplemental Indenture, dated as of August 23, 2006, by and between the Company and the Trustee, as further supplemented by the Third Supplemental Indenture, dated as of June 4, 2007, by and between the Company and the Trustee, as further supplemented by the Fourth Supplemental Indenture, dated as of December 12, 2011, by and between the Company and the Trustee, and as further supplemented by the Fifth Supplemental Indenture, dated as of February 1, 2016, by and between the Company and the Trustee.

Item 9.01. Financial Statements and Exhibits.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

[Signature page to Form 8-K]