VMRK: 10-Q financial filing

10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-12252 (Equity Residential) Commission File Number: 0-24920 (ERP Operating Limited Partnership) EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP ( Exact name of registrant as specified in its charter) Maryland (Equity Residential) 13-3675988 (Equity Residential) Illinois (ERP Operating Limited Partnership) 36-3894853 (ERP Operating Limited Partnership) (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) Two North Riverside Plaza , Chicago , Illinois 60606 ( 312 ) 474-1300 (Address of principal executive offices) (Zip Code) (Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Common Shares of Beneficial Interest, $0.01 Par Value (Equity Residential) EQR New York Stock Exchange 7.57% Notes due August 15, 2026 (ERP Operating Limited Partnership) N/A New York Stock Exchange Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Equity Residential Yes ☒ No ☐ ERP Operating Limited Partnership Yes ☒ No ☐ Indicate by ch