EQR / Equity Residential - SEC-arkivering, Årsberetning, Fuldmagtserklæring

AGREEMENT AND PLAN OF MERGER by and among AVALONBAY COMMUNITIES, INC., EQUITY RESIDENTIAL, ERP OPERATING LIMITED PARTNERSHIP, CANOPY MERGER SUB LLC Dated as of May 20, 2026

EX-2.1 Exhibit 2.1 EXECUTION VERSION AGREEMENT AND PLAN OF MERGER by and among AVALONBAY COMMUNITIES, INC., EQUITY RESIDENTIAL, ERP OPERATING LIMITED PARTNERSHIP, and CANOPY MERGER SUB LLC Dated as of May 20, 2026 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS AND INTERPRETATION 2 Section 1.1 Certain Definitions 2 Section 1.2 Terms Defined Elsewhere 18 Section 1.3 Interpretation 21 ARTICLE II THE TR

AvalonBay Communities and Equity Residential Announce Merger of Equals, Creating One of the Country’s Leading Real Estate Companies

EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE AvalonBay Communities and Equity Residential Announce Merger of Equals, Creating One of the Country’s Leading Real Estate Companies Creating a new and fundamentally stronger company with the differentiated scale, capabilities, and balance sheet strength to enhance the resident experience, redefine leadership in rental housing, and deliver structurally sup

Amendment to Ninth Amended and Restated Bylaws of Equity Residential

EX-3.1 Exhibit 3.1 Amendment to Ninth Amended and Restated Bylaws of Equity Residential On May 20, 2026, the Board of Trustees of Equity Residential, a Maryland real estate investment trust (the “Company”), at a duly convened meeting of the Board of Trustees at which all of the trustees were present, by unanimous vote of all the trustees of the Company and in accordance with Maryland law and the N

Cautionary Statement Regarding Forward-Looking Statements This communication contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities E

EX-99.2 Exhibit 99.2 AVB and EQR to Joint Conference Call Combine in an All-Stock May 21, 2026 RentingRedefined.com Merger of Equals Cautionary Statement Regarding Forward-Looking Statements This communication contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 19

Confidential / Do Not Forward Outside Equity Residential

425 Filed by Equity Residential ERP Operating Limited Partnership (Commission File Nos.

Filed by Equity Residential

425 Filed by Equity Residential ERP Operating Limited Partnership (Commission File Nos.

Filed by Equity Residential

425 Filed by Equity Residential ERP Operating Limited Partnership (Commission File Nos.

Confidential / Do Not Forward Outside Equity Residential

425 Filed by Equity Residential ERP Operating Limited Partnership (Commission File Nos.

AGREEMENT AND PLAN OF MERGER by and among AVALONBAY COMMUNITIES, INC., EQUITY RESIDENTIAL, ERP OPERATING LIMITED PARTNERSHIP, CANOPY MERGER SUB LLC Dated as of May 20, 2026

EX-2.1 Exhibit 2.1 EXECUTION VERSION AGREEMENT AND PLAN OF MERGER by and among AVALONBAY COMMUNITIES, INC., EQUITY RESIDENTIAL, ERP OPERATING LIMITED PARTNERSHIP, and CANOPY MERGER SUB LLC Dated as of May 20, 2026 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS AND INTERPRETATION 2 Section 1.1 Certain Definitions 2 Section 1.2 Terms Defined Elsewhere 18 Section 1.3 Interpretation 21 ARTICLE II THE TR

AvalonBay Communities and Equity Residential Announce Merger of Equals, Creating One of the Country’s Leading Real Estate Companies

EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE AvalonBay Communities and Equity Residential Announce Merger of Equals, Creating One of the Country’s Leading Real Estate Companies Creating a new and fundamentally stronger company with the differentiated scale, capabilities, and balance sheet strength to enhance the resident experience, redefine leadership in rental housing, and deliver structurally sup

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): May 20, 2026 EQUITY RESIDENTIAL (

425 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): May 20, 2026 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File

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): May 20, 2026 EQUITY RESIDENTIAL (

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): May 20, 2026 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Numb

Filed by Equity Residential

425 Filed by Equity Residential ERP Operating Limited Partnership (Commission File Nos.

Filed by Equity Residential

425 Filed by Equity Residential ERP Operating Limited Partnership (Commission File Nos.

Amendment to Ninth Amended and Restated Bylaws of Equity Residential

EX-3.1 Exhibit 3.1 Amendment to Ninth Amended and Restated Bylaws of Equity Residential On May 20, 2026, the Board of Trustees of Equity Residential, a Maryland real estate investment trust (the “Company”), at a duly convened meeting of the Board of Trustees at which all of the trustees were present, by unanimous vote of all the trustees of the Company and in accordance with Maryland law and the N

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): May 20, 2026 EQUITY RESIDENTIAL (

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): May 20, 2026 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Numb

Confidential / Do Not Forward Outside Equity Residential

425 Filed by Equity Residential ERP Operating Limited Partnership (Commission File Nos.

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): May 20, 2026 EQUITY RESIDENTIAL (

425 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): May 20, 2026 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File

Cautionary Statement Regarding Forward-Looking Statements This communication contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities E

EX-99.2 Exhibit 99.2 AVB and EQR to Joint Conference Call Combine in an All-Stock May 21, 2026 RentingRedefined.com Merger of Equals Cautionary Statement Regarding Forward-Looking Statements This communication contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 19

Confidential / Do Not Forward Outside Equity Residential

425 Filed by Equity Residential ERP Operating Limited Partnership (Commission File Nos.

EX-10.1

Exhibit 10.1 EQUITY RESIDENTIAL 2026 LONG-TERM INCENTIVE PLAN AWARD AGREEMENT This 2026 Long-Term Incentive Plan Award Agreement (the “Award Agreement”) is made as of January 1, 2026 between Equity Residential (the “Company”) and (the “Grantee”). RECITALS A. The Company, acting pursuant to authorization from its Board of Trustees and its Compensation Committee (the “Compensation Committee”), hereb

Available Information Business Objectives and Operating and Investing Strategies Item 1. Legal Proceedings Item 1A. Risk Factors Item 2. Unregistered Sales of Equity Securities and Use of Proceeds Item 3. Defaults Upon Senior Securities Item 4. Mine

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 March 31, 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 (Equ

Available Information Business Objectives and Operating and Investing Strategies Item 1. Legal Proceedings Item 1A. Risk Factors Item 2. Unregistered Sales of Equity Securities and Use of Proceeds Item 3. Defaults Upon Senior Securities Item 4. Mine

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 March 31, 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 (Equ

EX-10.1

Exhibit 10.1 EQUITY RESIDENTIAL 2026 LONG-TERM INCENTIVE PLAN AWARD AGREEMENT This 2026 Long-Term Incentive Plan Award Agreement (the “Award Agreement”) is made as of January 1, 2026 between Equity Residential (the “Company”) and (the “Grantee”). RECITALS A. The Company, acting pursuant to authorization from its Board of Trustees and its Compensation Committee (the “Compensation Committee”), hereb

FORM 8-K

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): April 28, 2026 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Co

Equity Residential Reports First Quarter 2026 Results San Francisco and New York Continue to Produce Strong Results

First Quarter 2026 Results Table of Contents Earnings Release 1 - 4 Consolidated Statements of Operations 5 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 6 Consolidated Balance Sheets 7 Portfolio Summary 8 Portfolio Rollforward 9 Same Store Results 10 - 14 Debt Summary 15 - 17 Capital Structure 18 Common Share and Unit Weighted Average Amounts Outstanding 19

FORM 8-K Item 7.01 Regulation FD Disclosure.

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): April 13, 2026 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Nu

FORM 8-K Item 7.01 Regulation FD Disclosure.

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): April 13, 2026 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Nu

Notice of 2026 Annual Meeting of Shareholders Our Purpose and Commitment to Corporate Responsibility Governance of the Company Common Share Ownership of Trustees and Executives The following table sets forth information, as of March 31, 2026, with r

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☑ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

ARS

2025 Annual ReportDearFellowShareholders, On behalfoftheentireEquity Residentialteam, wewant to expressoursincere appreciation foryourcontinued supportandtrustinourcompany.

FORM 8-K Item 7.01 Regulation FD Disclosure. Item 9.01 Financial Statements and Exhibits.

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): February 27, 2026 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File

Equity Residential to Participate in Citi 2026 Global Property CEO Conference

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901, [email protected] February 27, 2026 Equity Residential to Participate in Citi 2026 Global Property CEO Conference Chicago, IL – February 27, 2026 - Equity Residential (NYSE: EQR) today announced that members of the Company’s senior management team, including the Company’s President and CEO, Mark J. Parrell, wil

See Item 1, Business, for discussion regarding the Company’s business objectives and operating and investing strategies.

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2025 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 R

Formation State

Exhibit 21 List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership Entity Formation State 1 1145 Acquisition, L.

Formation State

Exhibit 21 List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership Entity Formation State 1 1145 Acquisition, L.

See Item 1, Business, for discussion regarding the Company’s business objectives and operating and investing strategies.

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2025 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 R

Equity Residential Reports Fourth Quarter 2025 Results Provides 2026 Guidance

Fourth Quarter 2025 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding

FORM 8-K

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): February 5, 2026 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

REVOLVING CREDIT AGREEMENT dated as of December 3, 2025 ERP OPERATING LIMITED PARTNERSHIP, THE BANKS LISTED HEREIN, BANK OF AMERICA, N.A., as Administrative Agent, WELLS FARGO SECURITIES, LLC, BofA Securities, Inc., and JPMORGAN CHASE BANK, N.A., as

Exhibit 10.1 Execution Copy Published Deal CUSIP Number: 26884DAY3 Published USD Revolver CUSIP Number: 26884DAZ06 Published Multicurrency Revolver CUSIP Number: 26884DBA4 REVOLVING CREDIT AGREEMENT dated as of December 3, 2025 among ERP OPERATING LIMITED PARTNERSHIP, THE BANKS LISTED HEREIN, BANK OF AMERICA, N.A., as Administrative Agent, WELLS FARGO SECURITIES, LLC, BofA Securities, Inc., and JP

FORM 8-K Item 1.01 Entry into a Material Definitive Agreement. Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. Item 9.01 Financial Statements and Exhibits.

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): December 3, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File

FORM 8-K Item 7.01 Regulation FD Disclosure.

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): December 01, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File

Available Information Business Objectives and Operating and Investing Strategies Item 1. Legal Proceedings Item 1A. Risk Factors Item 2. Unregistered Sales of Equity Securities and Use of Proceeds Item 3. Defaults Upon Senior Securities Item 4. Mine

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 September 30, 2025 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

FORM 8-K

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): October 28, 2025 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

Equity Residential Reports Third Quarter 2025 Results Results Reflect Strong Cash Flow Growth and Highest Q3 Retention Rate in Company's History

Third Quarter 2025 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding 2

FORM 8-K Item 7.01 Regulation FD Disclosure. Item 9.01 Financial Statements and Exhibits.

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): September 08, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission Fil

Equity Residential to Participate in Bank of America 2025 Global Real Estate Conference

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901, [email protected] September 8, 2025 Equity Residential to Participate in Bank of America 2025 Global Real Estate Conference Chicago, IL – September 8, 2025 - Equity Residential (NYSE: EQR) today announced that the Company’s President and CEO, Mark J. Parrell, will participate in a roundtable discussion at the B

FORM 8-K Item 7.01 Regulation FD Disclosure. Item 9.01 Financial Statements and Exhibits.

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): September 02, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission Fil

Equity Residential Provides Operating Update

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901, [email protected] September 2, 2025 Equity Residential Provides Operating Update Chicago, IL – September 2, 2025 - Equity Residential (NYSE: EQR) today provided an update on certain same store operating trends in its business. Same store revenue growth remains on track within the Company’s guidance range as des

Rule of 70 Retirement Agreement, dated June 26, 2025, by and between Equity Residential and Alexander Brackenridge.

Exhibit 10.3 RULE OF 70 RETIREMENT AGREEMENT This Rule of 70 Retirement Agreement (this “Agreement”) is entered into by and between Equity Residential (“Equity” or the “Company”) and Alexander “Alec” Brackenridge (“Executive”) as of June 26, 2025. Witnesseth Whereas, Executive is currently an officer of Equity and an employee of an Equity affiliate; Whereas, Executive has elected to voluntarily re

Available Information Business Objectives and Operating and Investing Strategies Item 1. Legal Proceedings Item 1A. Risk Factors Item 2. Unregistered Sales of Equity Securities and Use of Proceeds Item 3. Defaults Upon Senior Securities Item 4. Mine

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, 2025 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 (Equi

Equity Residential Reports Second Quarter 2025 Results Guidance Updated to Reflect Solid Operating Fundamentals

Second Quarter 2025 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding

FORM 8-K

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, 2025 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Co

Equity Residential Appoints Chris Carr to Board of Trustees

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901, [email protected] July 24, 2025 Equity Residential Appoints Chris Carr to Board of Trustees Chicago, IL – July 24, 2025 - Equity Residential (NYSE: EQR) today announced the appointment of Chris Carr to the Company’s Board of Trustees to serve until the next annual meeting of shareholders. Mr. Carr qualifies as

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): July 24, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Num

FORM 8-K Item 5.07 Submission of Matters to a Vote of Security Holders.

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): June 26, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Num

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): June 26, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Num

Equity Residential Announces Executive Management Team Leadership Transition Plans Bob Garechana to become Chief Investment Officer; Bret McLeod joins as Chief Financial Officer; Alec Brackenridge to Retire as Chief Investment Officer

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901, [email protected] June 30, 2025 Equity Residential Announces Executive Management Team Leadership Transition Plans Bob Garechana to become Chief Investment Officer; Bret McLeod joins as Chief Financial Officer; Alec Brackenridge to Retire as Chief Investment Officer Chicago, IL – June 30, 2025 - Equity Resident

Equity Residential to Participate in Nareit REITweek Conference

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901, [email protected] May 28, 2025 Equity Residential to Participate in Nareit REITweek Conference Chicago, IL – May 28, 2025 - Equity Residential (NYSE: EQR) today announced that members of the Company’s senior management team, including the Company’s President and CEO, Mark J. Parrell, will participate in a round

Regulation FD Disclosure, Financial Statements and Exhibits

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): May 28, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Numb

Distribution Agreement, dated May 15, 2025

Exhibit 1.1 DISTRIBUTION AGREEMENT May 15, 2025 JPMorgan Chase Bank, National Association, as Forward Purchaser 383 Madison Avenue New York, NY 10179 J.P. Morgan Securities LLC, as Agent and Forward Seller 383 Madison Avenue New York, NY 10179 Barclays Bank PLC, as Forward Purchaser c/o Barclays Capital Inc. 1 Churchill place London E14 5HP United Kingdom Barclays Capital Inc., as Agent and Forwar

13,000,000 COMMON SHARES

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration File No. 333-287237 PROSPECTUS SUPPLEMENT (To Prospectus dated May 13, 2025) 13,000,000 COMMON SHARES We have entered into a distribution agreement, dated May 15, 2025 (the “Distribution Agreement”), with J.P. Morgan Securities LLC (“J.P. Morgan”), Barclays Capital Inc. (“Barclays”), BofA Securities, Inc. (“BofA”), BMO Capital Markets

Form of Master Forward Sale Confirmation

Exhibit 1.2 Date: May 15, 2025 To: Equity Residential Two North Riverside Plaza Chicago, Illinois 60606 From: [Dealer] [Address] Attn: [•] Telephone: [•] Facsimile: [•] E-mail: [•] Re: Master Confirmation for Issuer Share Forward Sale Transactions Ladies and Gentlemen: [DEUTSCHE BANK AG, LONDON BRANCH IS NOT REGISTERED AS A BROKER DEALER UNDER THE U.S. SECURITIES EXCHANGE ACT OF 1934. DEUTSCHE BAN

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

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): May 15, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Numb

Calculation of Filing Fee Tables (Form Type) EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107.1 Calculation of Filing Fee Tables 424(b)(5) (Form Type) EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security  Type  S ec urity Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration F

As filed with the Securities and Exchange Commission on May 13, 2025

S-3ASR Table of Contents As filed with the Securities and Exchange Commission on May 13, 2025 Registration No.

Statement of Eligibility of Trustee on Form T-1 of The Bank of New York Mellon Trust Company, N.A. for the Indenture.

EX-25.1 Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its char

Filing Fee Table.

Exhibit 107.1 Calculation of Filing Fee Tables Form S-3 (Form Type) EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title (1) Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit  Maximum   Aggregate   Offering 

Terms Agreement dated May 1, 2025, among ERP Operating Limited Partnership and each of Citigroup Global Markets Inc., J.P. Morgan Securities LLC, RBC Capital Markets, LLC and Wells Fargo Securities, LLC

Exhibit 1.1 EXECUTION VERSION ERP OPERATING LIMITED PARTNERSHIP (an Illinois limited partnership) $500,000,000 4.950% Notes due June 15, 2032 TERMS AGREEMENT Dated: May 1, 2025 To: ERP Operating Limited Partnership c/o Equity Residential Two North Riverside Plaza Chicago, Illinois 60606 Attention: Robert Garechana Ladies and Gentlemen: We (the “Representatives”) understand that ERP Operating Limit

Standard Underwriting Provisions dated May 1, 2025

Exhibit 1.2 ERP OPERATING LIMITED PARTNERSHIP (an Illinois limited partnership) Debt Securities STANDARD UNDERWRITING PROVISIONS May 1, 2025 ERP Operating Limited Partnership, a limited partnership organized under the laws of the State of Illinois (“ERP”), may issue and sell various aggregate principal amounts of its senior debt securities (the “Securities”), from time to time, in one or more offe

Form of 4.950% Note due June 15, 2032

Exhibit 4.1 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & C

Financial Statements and Exhibits, Other Events

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): May 1, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

Form of 2025 Long-Term Incentive Plan Award Agreement.

Exhibit 10.1 EQUITY RESIDENTIAL 2025 LONG-TERM INCENTIVE PLAN AWARD AGREEMENT This 2025 Long-Term Incentive Plan Award Agreement (the “Award Agreement”) is made as of January 1, 2025 between Equity Residential (the “Company”) and (the “Grantee”). RECITALS A. The Company, acting pursuant to authorization from its Board of Trustees and its Compensation Committee (the “Compensation Committee”), hereb

Available Information Business Objectives and Operating and Investing Strategies Item 1. Legal Proceedings Item 1A. Risk Factors Item 2. Unregistered Sales of Equity Securities and Use of Proceeds Item 3. Defaults Upon Senior Securities Item 4. Mine

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 March 31, 2025 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 (Equ

FORM 8-K

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): April 29, 2025 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Co

Equity Residential Reports First Quarter 2025 Results Results Exceed First Quarter 2025 Guidance Expectations

First Quarter 2025 Results Table of Contents Earnings Release 1 - 4 Consolidated Statements of Operations 5 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 6 Consolidated Balance Sheets 7 Portfolio Summary 8 Portfolio Rollforward 9 Same Store Results 10 - 16 Debt Summary 17 - 19 Capital Structure 20 Common Share and Unit Weighted Average Amounts Outstanding 21

Notice of 2025 Annual Meeting of Shareholders Our Purpose and Commitment to Corporate Responsibility Governance of the Company Common Share Ownership of Trustees and Executives The following table sets forth information, as of March 31, 2025, with r

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☑ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

ARS

2024 AnnualReport DearFellowShareholders, Aswereflectonthepastyear,weareproudtoshareourprogressandcontinuedcommitment todeliveringlong-termvalueforourshareholders.

Regulation FD Disclosure, Financial Statements and Exhibits

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): February 25, 2025 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File

Equity Residential Announces 2025 Investor Day

EX-99.1 2 eqr-ex991.htm EX-99.1 Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901 February 25, 2025 Equity Residential Announces 2025 Investor Day Chicago, IL – February 25, 2025 - Equity Residential (NYSE: EQR) will hold an Investor Day on Tuesday, February 25, 2025 with presentations given by members of the Company’s management team. The presentations will f

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2024 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 R

Description of Equity Residential Common Shares Registered Under Section 12 of the Securities Exchange Act of 1934.

Exhibit 4.1 Description of Equity Residential Common Shares Registered Under Section 12 of the Securities Exchange Act of 1934 Please note that in this exhibit, references to “the Company,” “we,” “our” and “us” refer to Equity Residential, as the issuer of the Common Shares, unless the context requires otherwise. The description of the Common Shares of Beneficial Interest, $0.01 par value (the “Co

List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership.

Exhibit 21 List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership Entity Formation State 1 1145 Acquisition, L.

Equity Residential Securities Trading Policy.

Exhibit 19 SECURITIES TRADING POLICY (last revised September 16, 2024) This Securities Trading Policy (the “Policy”) provides guidelines to all employees, including officers, of Equity Residential (the “Company”) as well as members of the Company’s Board of Trustees (the “Trustees”) with respect to transactions in the Company’s securities and other securities.

Equity Residential Reports Fourth Quarter 2024 Results Provides 2025 Guidance

Fourth Quarter 2024 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 3, 2025 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

Current Report

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): December 12, 2024 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File

Equity Residential Executive Severance Plan.

Exhibit 10.1 EQUITY RESIDENTIAL EXECUTIVE SEVERANCE PLAN (for the Chief Executive Officer, President, and Executive Vice Presidents that report directly to the Chief Executive Officer and/or President) Plan Document/Summary Plan Description Equity Residential (the “Company”) has adopted this Executive Severance Plan (the “Plan”) for the benefit of certain management employees of the Company and it

EQR / Equity Residential / PRICE T ROWE ASSOCIATES INC /MD/ Passive Investment

SC 13G/A 1 eqr13gasep24.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1) EQUITY RESIDENTIAL (Name of Issuer) REIT (Title of Class of Securities) 29476L107 (CUSIP NUMBER) September 30, 2024 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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 September 30, 2024 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 Reports Third Quarter 2024 Results

Third Quarter 2024 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding 2

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 30, 2024 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

Ninth Amended and Restated Bylaws of Equity Residential, effective September 19, 2024.

Exhibit 3.1 EQUITY RESIDENTIAL NINTH AMENDED AND RESTATED BYLAWS ARTICLE I OFFICES Section 1. PRINCIPAL OFFICE. The principal office of Equity Residential (the “Company”) in the State of Maryland shall be located at such place as the Board of Trustees may designate. Section 2. ADDITIONAL OFFICES. The Company may have additional offices, including a principal executive office, at such places as the

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

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): September 19, 2024 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission Fil

Terms Agreement dated September 9, 2024, among ERP Operating Limited Partnership and each of Barclays Capital Inc., BofA Securities, Inc., Deutsche Bank Securities Inc., Morgan Stanley & Co. LLC and U.S. Bancorp Investments, Inc.

Exhibit 1.1 EXECUTION VERSION ERP OPERATING LIMITED PARTNERSHIP (an Illinois limited partnership) $600,000,000 4.650% Notes due September 15, 2034 TERMS AGREEMENT Dated: September 9, 2024 To: ERP Operating Limited Partnership c/o Equity Residential Two North Riverside Plaza Chicago, Illinois 60606 Attention: Robert Garechana Ladies and Gentlemen: We (the “Representatives”) understand that ERP Oper

Standard Underwriting Provisions dated September 9, 2024.

Exhibit 1.2 ERP OPERATING LIMITED PARTNERSHIP (an Illinois limited partnership) Debt Securities STANDARD UNDERWRITING PROVISIONS September 9, 2024 ERP Operating Limited Partnership, a limited partnership organized under the laws of the State of Illinois (“ERP”), may issue and sell various aggregate principal amounts of its senior debt securities (the “Securities”), from time to time, in one or mor

Form of 4.650% Note due September 15, 2034.

Exhibit 4.1 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & C

Regulation FD Disclosure, Financial Statements and Exhibits

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): September 09, 2024 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission Fil

Equity Residential to Participate in Bank of America 2024 Global Real Estate Conference

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901 September 9, 2024 Equity Residential to Participate in Bank of America 2024 Global Real Estate Conference Chicago, IL – September 9, 2024 - Equity Residential (NYSE: EQR) today announced that the Company’s President and CEO, Mark J. Parrell, will participate in a roundtable discussion at the Bank of America Sec

Financial Statements and Exhibits, Other Events

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): September 9, 2024 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File

Equity Residential Provides Operating Update

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901 September 4, 2024 Equity Residential Provides Operating Update Chicago, IL – September 4, 2024 - Equity Residential (NYSE: EQR) today provided an update on certain same store operating trends in its business. Same store revenue growth remains on track within the Company’s guidance range as described in its seco

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

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): September 04, 2024 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission Fil

Regulation FD Disclosure, Financial Statements and Exhibits

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 07, 2024 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File N

Equity Residential to Acquire $1 Billion Apartment Portfolio from Blackstone Real Estate

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE Equity Residential to Acquire $1 Billion Apartment Portfolio from Blackstone Real Estate Chicago and New York – August 7, 2024 - Equity Residential (NYSE: EQR) and Blackstone (NYSE: BX) today announced that Equity Residential has agreed to acquire 11 apartment properties from Blackstone Real Estate strategies in separate transactions, including Bla

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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, 2024 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 (Equi

Equity Residential Reports Second Quarter 2024 Results Guidance Updated on Strong Operating Fundamentals

Second Quarter 2024 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): July 29, 2024 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Com

Submission of Matters to a Vote of Security Holders

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): June 20, 2024 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Num

LETTER

United States securities and exchange commission logo June 6, 2024 Robert A. Garechana Executive Vice President and Chief Financial Officer Equity Residential Two North Riverside Plaza Chicago, Illinois 60606 Re: Equity Residential ERP Operating Limited Partnership Form 10-K for the fiscal year ended December 31, 2023 Filed February 15, 2024 File No. 001-12252 File No. 000-24920 Dear Robert A. Gar

2 N. Riverside Plaza

2 N. Riverside Plaza Suite 400 Chicago, IL 60606 EquityApartments.com June 5, 2024 VIA EDGAR Mr. Peter McPhun Mr. Mark Rakip Division of Corporation Finance Office of Real Estate & Construction U.S. Securities and Exchange Commission Washington, D.C. 20549 Re: Equity Residential ERP Operating Limited Partnership Form 10-K for the fiscal year ended December 31, 2023 Filed February 15, 2024 File No.

LETTER

United States securities and exchange commission logo May 29, 2024 Robert A. Garechana Executive Vice President and Chief Financial Officer Equity Residential Two North Riverside Plaza Chicago, Illinois 60606 Re: Equity Residential ERP Operating Limited Partnership Form 10-K for the fiscal year ended December 31, 2023 Filed February 15, 2024 File No. 001-12252 File No. 000-24920 Dear Robert A. Gar

Regulation FD Disclosure, Financial Statements and Exhibits

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): May 28, 2024 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Numb

Equity Residential Provides Operating Update Same Store Results Continue to Exceed Expectations

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901 May 28, 2024 Equity Residential Provides Operating Update Same Store Results Continue to Exceed Expectations Chicago, IL – May 28, 2024 - Equity Residential (NYSE: EQR) today announced that members of the Company’s senior management team, including the Company’s President and CEO, Mark J. Parrell, will particip

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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 March 31, 2024 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 (Equ

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): April 23, 2024 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Co

Equity Residential Reports First Quarter 2024 Results Same Store Results Ahead of Expectations

First Quarter 2024 Results Table of Contents Earnings Release 1 - 4 Consolidated Statements of Operations 5 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 6 Consolidated Balance Sheets 7 Portfolio Summary 8 Portfolio Rollforward 9 Same Store Results 10 - 16 Debt Summary 17 - 19 Capital Structure 20 Common Share and Unit Weighted Average Amounts Outstanding 21

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☑ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

ARS

2023 AnnualReportDearFellowShareholders, Wearepleasedtoupdateyouonthestateofyourcompany’sbusinessandouroutlookfor2024 andbeyond.

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): March 19, 2024 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Nu

Equity Residential Appoints Ann C. Hoff and Nina P. Jones to Board of Trustees

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901 March 19, 2024 Equity Residential Appoints Ann C. Hoff and Nina P. Jones to Board of Trustees Chicago, IL – March 19, 2024 - Equity Residential (NYSE: EQR) today announced the appointment of Ann C. Hoff and Nina P. Jones to the Company’s Board of Trustees to serve until the next annual meeting of shareholders.

Equity Residential to Participate in 2024 Citi Global Property CEO Conference

Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901 February 29, 2024 Equity Residential to Participate in 2024 Citi Global Property CEO Conference Chicago, IL – February 29, 2024 - Equity Residential (NYSE: EQR) today announced that members of the Company’s senior management team, including the Company’s President and CEO, Mark J. Parrell, will participate in a

Regulation FD Disclosure, Financial Statements and Exhibits

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): February 29, 2024 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File

Equity Residential and ERP Operating Limited Partnership Incentive-Based Compensation Clawback Policy.

Exhibit 97 EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP INCENTIVE-BASED COMPENSATION CLAWBACK POLICY (effective October 2, 2023) If Equity Residential or ERP Operating Limited Partnership (collectively, the “Company”) determines it must prepare a restatement, the Company will seek to recover the amount of erroneously awarded compensation received by a covered officer, as provided below.

Description of ERP Operating Limited Partnership OP Units Registered Under Section 12 of the Securities Exchange Act of 1934.

Exhibit 4.3 Description of ERP Operating Limited Partnership OP Units Registered Under Section 12 of the Securities Exchange Act of 1934 Please note that in this exhibit, references to “the Operating Partnership,” “we,” “our” and “us” refer to ERP Operating Limited Partnership, as the issuer of the units of limited partnership interest, and references to “the Company” refer to Equity Residential,

Description of Equity Residential Common Shares Registered Under Section 12 of the Securities Exchange Act of 1934.

Exhibit 4.1 Description of Equity Residential Common Shares Registered Under Section 12 of the Securities Exchange Act of 1934 Please note that in this exhibit, references to “the Company,” “we,” “our” and “us” refer to Equity Residential, as the issuer of the Common Shares, unless the context requires otherwise. The description of the Common Shares of Beneficial Interest, $0.01 par value (the “Co

List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership.

Exhibit 21 List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership Entity Formation State 1 1145 Acquisition, L.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2023 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 R

EQR / Equity Residential / PRICE T ROWE ASSOCIATES INC /MD/ Passive Investment

SC 13G 1 eqr13gdec23.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ) EQUITY RESIDENTIAL (Name of Issuer) REIT (Title of Class of Securities) 29476L107 (CUSIP NUMBER) December 31, 2023 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to which

EQR / Equity Residential / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0869-equityresidential.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 20)* Name of issuer: Equity Residential Title of Class of Securities: Common Stock CUSIP Number: 29476L107 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designa

EQR / Equity Residential / NORGES BANK Passive Investment

UNITED STATES SECURITIES EXCHANGE COMMISSION Washington, D.C. 20549 - SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6)* Equity Residential - (Name of Issuer) REIT - (Title of Class of Securities) 29476L107 - (CUSIP Number) December 31, 2023 - (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedu

Equity Residential Reports Fourth Quarter 2023 Results Provides 2024 Guidance

Fourth Quarter 2023 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): January 30, 2024 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

EQR / Equity Residential / STATE STREET CORP Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 AMENDED FILING EQUITY RESIDENTIAL (NAME OF ISSUER) REIT (TITLE OF CLASS OF SECURITIES) 29476L107 (CUSIP NUMBER) 12/31/2023 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO WHICH THIS SCHEDULE IS FILED: (X)

EQR / Equity Residential / BlackRock Inc. Passive Investment

SC 13G/A 1 us29476l1070012324.txt us29476l1070012324.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 16) EQUITY RESIDENTIAL - (Name of Issuer) Common Stock - (Title of Class of Securities) 29476L107 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate bo

Equity Residential to Participate in Nareit Investor Conference

NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901 November 9, 2023 Equity Residential to Participate in Nareit Investor Conference Chicago, IL – November 9, 2023 - Equity Residential (NYSE: EQR) today announced that members of the Company’s senior management team, including the Company’s President and CEO, Mark J.

Regulation FD Disclosure, Financial Statements and Exhibits

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): November 09, 2023 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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 September 30, 2023 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

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 31, 2023 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

Equity Residential Reports Third Quarter 2023 Results

Third Quarter 2023 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding 2

Equity Residential Provides Operating Update

NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901 mmckenna@eqr.

Regulation FD Disclosure, Financial Statements and Exhibits

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): September 06, 2023 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission Fil

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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, 2023 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 (Equi

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): July 27, 2023 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Com

Equity Residential Reports Second Quarter 2023 Results Guidance Updated as Coastal Markets Experience Continued Strong Demand and Limited New Supply

Second Quarter 2023 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding

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

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): June 15, 2023 EQUITY RESIDENTIAL (Exact name of Registrant as Specified in Its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation) (Commission File Num

Equity Residential Mourns Death of Founder and Chairman Samuel Zell Industry Legend Led Transformation of Public Real Estate Market

EX-99.1 Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901 May 18, 2023 Equity Residential Mourns Death of Founder and Chairman Samuel Zell Industry Legend Led Transformation of Public Real Estate Market Chicago, IL – May 18, 2023 - It is with profound sadness that Equity Residential (NYSE: EQR) mourns the death of its Founder and Chairman, Samuel Zell, who die

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Pro

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): May 18, 2023 EQUITY RESIDENTIAL (

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): May 18, 2023 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File Numb

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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 March 31, 2023 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 (Equ

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): April 25, 2023 EQUITY RESIDENTIAL

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): April 25, 2023 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Co

Equity Residential Reports First Quarter 2023 Results Continued Strong Demand and Improved Delinquency Drives Results Above Expectations

First Quarter 2023 Results Table of Contents Earnings Release 1 - 4 Consolidated Statements of Operations 5 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 6 Consolidated Balance Sheets 7 Portfolio Summary 8 Portfolio Rollforward 9 Same Store Results 10 - 16 Debt Summary 17 - 19 Capital Structure 20 Common Share and Unit Weighted Average Amounts Outstanding 21

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☑ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

ARS

2022 AnnualReport EquityResidentialiscommittedtocreatingcommunitieswherepeoplethrive.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 FORM S-8 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 13-36

S-8 POS Registration No. 333-175173 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 13-3675988 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 FORM S-8 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 13-36

S-8 POS Registration No. 333-102609 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 13-3675988 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership.

Exhibit 21 List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership Entity Formation State 1 1145 Acquisition, L.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2022 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 R

EQR / Equity Residential / NORGES BANK Passive Investment

SC 13G/A 1 efc23-0213formsc13ga.txt UNITED STATES SECURITIES EXCHANGE COMMISSION Washington, D.C. 20549 - SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5)* Equity Residential - (Name of Issuer) REIT - (Title of Class of Securities) 29476L107 - (CUSIP Number) December 31, 2022 - (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate th

EQR / Equity Residential / PRICE T ROWE ASSOCIATES INC /MD/ Passive Investment

SC 13G/A 1 eqr13gadec22.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1) EQUITY RESIDENTIAL (Name of Issuer) REIT (Title of Class of Securities) 29476L107 (CUSIP NUMBER) December 31, 2022 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to w

Equity Residential Reports Fourth Quarter 2022 Results Expects Continued Above Trend Growth in 2023

Fourth Quarter 2022 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 9, 2023 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

EQR / Equity Residential / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0846-equityresidential.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 19)* Name of issuer: Equity Residential Title of Class of Securities: REIT CUSIP Number: 29476L107 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the r

EQR / Equity Residential / STATE STREET CORP Passive Investment

SC 13G/A 1 EquityResidential.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 AMENDED FILING EQUITY RESIDENTIAL (NAME OF ISSUER) REIT (TITLE OF CLASS OF SECURITIES) 29476L107 (CUSIP NUMBER) 12/31/2022 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO W

EQR / Equity Residential / BlackRock Inc. Passive Investment

SC 13G/A 1 us29476l1070013123.txt us29476l1070013123.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 15) EQUITY RESIDENTIAL - (Name of Issuer) Common Stock - (Title of Class of Securities) 29476L107 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate bo

Amendment to the Equity Residential Supplemental Executive Retirement Plan, effective as of October 1, 2022.

Exhibit 10.1 AMENDMENT TO THE EQUITY RESIDENTIAL SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN Premises a. Equity Residential (the “Company”) maintains the Equity Residential Supplemental Executive Retirement Plan (the “Plan”). b. Section 10 of the Plan provides that the Company may amend the Plan at any time. c. The Company wishes to amend the Plan to simplify the structure for payment to beneficiaries

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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 September 30, 2022 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

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): October 26, 2022 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File Nu

Revolving Credit Agreement, dated as of October 26, 2022, among ERP Operating Limited Partnership, Bank of America, N.A., as Administrative Agent, and the financial institutions party thereto.

Exhibit 10.1 Execution Copy Published Deal CUSIP Number: 26884DAV9 Published USD Revolver CUSIP Number: 26884DAW7 Published Multicurrency Revolver CUSIP Number: 26884DAX5 REVOLVING CREDIT AGREEMENT dated as of October 26, 2022 among ERP OPERATING LIMITED PARTNERSHIP, THE BANKS LISTED HEREIN, BANK OF AMERICA, N.A., as Administrative Agent, JPMORGAN CHASE BANK, N.A., WELLS FARGO SECURITIES, LLC, and

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 25, 2022 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

Equity Residential Reports Third Quarter 2022 Results Strong Performance Driven by Healthy Demand During the Primary Leasing Season

Third Quarter 2022 Results Table of Contents Earnings Release 1 - 4 Consolidated Statements of Operations 5 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 6 Consolidated Balance Sheets 7 Portfolio Summary 8 Portfolio Rollforward 9 Same Store Results 10 - 17 Debt Summary 18 - 20 Capital Structure 21 Common Share and Unit Weighted Average Amounts Outstanding 22

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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, 2022 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 (Equi

Equity Residential Reports Second Quarter 2022 Results Robust Demand and Continued Strong Cost Controls Drive Guidance Improvements

Second Quarter 2022 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 18 Debt Summary 19 - 21 Capital Structure 22 Common Share and Unit Weighted Average Amounts Outstanding

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): July 26, 2022 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Com

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): June 16, 2022 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification Number) Two North Riverside Plaza Chicago, Illinois 60606 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code (312) 474-1300 Not applicable (Former name or former address, if changed since last report.

13,000,000 COMMON SHARES

424B5 1 d361441d424b5.htm 424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration File No. 333-265017 PROSPECTUS SUPPLEMENT (To Prospectus dated May 17, 2022) 13,000,000 COMMON SHARES We have entered into a distribution agreement, dated May 18, 2022 (the “Distribution Agreement”), with J.P. Morgan Securities LLC (“J.P. Morgan”), Barclays Capital Inc. (“Barclays”), BofA Securities, In

Form of Master Forward Sale Confirmation.

Exhibit 1.2 Date: May 18, 2022 To: Equity Residential Two North Riverside Plaza Chicago, Illinois 60606 From: [Dealer] [Address] Attn: [?] Telephone: [?] Facsimile: [?] E-mail: [?] Re: Master Confirmation for Issuer Share Forward Sale Transactions Ladies and Gentlemen: The purpose of this communication (this ?Master Confirmation?) is to set forth the terms and conditions of the transactions to be

Distribution Agreement, dated May 18, 2022.

Exhibit 1.1 DISTRIBUTION AGREEMENT May 18, 2022 JPMorgan Chase Bank, National Association, New York Branch, as Forward Purchaser 383 Madison Avenue New York, NY 10179 J.P. Morgan Securities LLC, as Agent and Forward Seller 383 Madison Avenue New York, New York 10179 Barclays Bank PLC, as Forward Purchaser 5 The North Colonnade Canary Wharf, London E14 4BB Barclays Capital Inc., as Agent and Forwar

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): May 18, 2022 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.

You’ve Exceeded the SEC’s Traffic Limit

Exhibit 107.1 Calculation of Filing Fee Tables 424(b)(5) (Form Type) EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title(1) Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fe

Filing Fee Table

Exhibit 107.1 Calculation of Filing Fee Tables Form S-3 (Form Type) EQUITY RESIDENTIAL ERP OPERATING LIMITED PARTNERSHIP (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title(1) Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price F

Statement of Eligibility of Trustee on Form T-1 of The Bank of New York Mellon Trust Company, N.A. for the Indenture.

Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) | | THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) (

As filed with the Securities and Exchange Commission on May 17, 2022

Table of Contents As filed with the Securities and Exchange Commission on May 17, 2022 Registration No.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFA14A 1 eqr-defa14a20220510.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by

Form of 2022 Long-Term Incentive Plan Award Agreement.

Exhibit 10.1 EQUITY RESIDENTIAL 2022 LONG-TERM INCENTIVE PLAN AWARD AGREEMENT This 2022 Long-Term Incentive Plan Award Agreement (the ?Award Agreement?) is made as of January 1, 2022 between Equity Residential (the ?Company?) and (the ?Grantee?). RECITALS A.The Company, acting pursuant to authorization from its Board of Trustees and its Compensation Committee (the ?Compensation Committee?), hereby

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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 March 31, 2022 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 (Equ

Equity Residential Reports First Quarter 2022 Results

First Quarter 2022 Results Table of Contents Earnings Release 1 - 4 Consolidated Statements of Operations 5 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 6 Consolidated Balance Sheets 7 Portfolio Summary 8 Portfolio Rollforward 9 Same Store Results 10 - 16 Debt Summary 17 - 19 Capital Structure 20 Common Share and Unit Weighted Average Amounts Outstanding 21

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): April 26, 2022 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFA14A 1 eqr-defa14a20220616.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEF 14A 1 eqr-def14a20220616.htm DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only

Description of ERP Operating Limited Partnership OP Units Registered Under Section 12 of the Securities Exchange Act of 1934.

Exhibit 4.3 Description of ERP Operating Limited Partnership OP Units Registered Under Section 12 of the Securities Exchange Act of 1934 Please note that in this exhibit, references to ?the Operating Partnership,? ?we,? ?our? and ?us? refer to ERP Operating Limited Partnership, as the issuer of the units of limited partnership interest, and references to ?the Company? refer to Equity Residential,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2021 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 R

List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership.

Exhibit 21 List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership Entity Formation State 1 1145 Acquisition, L.

EQR / Equity Residential / PRICE T ROWE ASSOCIATES INC /MD/ Passive Investment

SC 13G 1 eqr13gdec21.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ) EQUITY RESIDENTIAL (Name of Issuer) REIT (Title of Class of Securities) 29476L107 (CUSIP NUMBER) December 31, 2021 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to which

EQR / Equity Residential / STATE STREET CORP Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 AMENDED FILING EQUITY RESIDENTIAL (NAME OF ISSUER) REIT (TITLE OF CLASS OF SECURITIES) 29476L107 (CUSIP NUMBER) 12/31/2021 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO WHICH THIS SCHEDULE IS FILED: (X)

EQR / Equity Residential / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 18)* Name of issuer: Equity Residential Title of Class of Securities: REIT CUSIP Number: 29476L107 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ??Rule 13

EQR / Equity Residential / NORGES BANK Passive Investment

UNITED STATES SECURITIES EXCHANGE COMMISSION Washington, D.C. 20549 - SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4)* Equity Residential - (Name of Issuer) REIT - (Title of Class of Securities) 29476L107 - (CUSIP Number) December 31, 2021 - (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedu

Equity Residential Reports Full Year 2021 Results and Provides Full Year 2022 Guidance 2022 Guidance Reflects Acceleration in Growth

Fourth Quarter 2021 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 17 Debt Summary 18 - 20 Capital Structure 21 Common Share and Unit Weighted Average Amounts Outstanding

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 1, 2022 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

EQR / Equity Residential / BlackRock Inc. Passive Investment

us29476l1070012722.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 14) EQUITY RESIDENTIAL - (Name of Issuer) Common Stock - (Title of Class of Securities) 29476L107 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant t

EQR / Equity Residential / BlackRock Inc. Passive Investment

SC 13G/A 1 us29476l1070012522.txt us29476l1070012522.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 13) EQUITY RESIDENTIAL - (Name of Issuer) Common Stock - (Title of Class of Securities) 29476L107 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate bo

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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 September 30, 2021 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

First Amendment to Revolving Credit Agreement, dated as of August 31, 2021, among ERP Operating Limited Partnership, Lexford Properties, L.P., and Bank of America, N.A., as Administrative Agent.

Exhibit 10.1 Execution Copy FIRST AMENDMENT TO CREDIT AGREEMENT (LIBOR TRANSITION AMENDMENT) THIS AMENDMENT AGREEMENT (this ?Agreement?), dated as of August 31, 2021 (the ?Amendment Effective Date?), is entered into among ERP OPERATING LIMITED PARTNERSHIP, an Illinois limited partnership (the ?Borrower?), LEXFORD PROPERTIES, L.P., an Ohio limited partnership (the ?Guarantor?) and Bank of America,

Equity Residential Reports Third Quarter 2021 Results Full Year Guidance Ranges Raised as Strong Recovery Continues Across Portfolio

Third Quarter 2021 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 17 Debt Summary 18 - 20 Capital Structure 21 Common Share and Unit Weighted Average Amounts Outstanding 2

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 26, 2021 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

Terms Agreement dated August 3, 2021, among ERP Operating Limited Partnership and each of Citigroup Global Markets Inc., J.P. Morgan Securities LLC, Morgan Stanley & Co. LLC and RBC Capital Markets, LLC.

Execution Version Exhibit 1.1 ERP OPERATING LIMITED PARTNERSHIP (an Illinois limited partnership) $500,000,000 1.850% Notes due 2031 TERMS AGREEMENT Dated: August 3, 2021 To: ERP Operating Limited Partnership c/o Equity Residential Two North Riverside Plaza Chicago, Illinois 60606 Attention: Robert Garechana Ladies and Gentlemen: We (the ?Representatives?) understand that ERP Operating Limited Par

Standard Underwriting Provisions dated August 3, 2021.

Exhibit 1.2 ERP OPERATING LIMITED PARTNERSHIP (an Illinois limited partnership) Debt Securities STANDARD UNDERWRITING PROVISIONS August 3, 2021 ERP Operating Limited Partnership, a limited partnership organized under the laws of the State of Illinois (?ERP?), may from time to time issue and sell various aggregate principal amounts of its senior debt securities (the ?Securities?), from time to time

Form of 1.850% Note due August 1, 2031.

Exhibit 4.1 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (?DTC?), TO ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & C

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 3, 2021 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File Number) (I.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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, 2021 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 (Equi

Equity Residential Reports Second Quarter 2021 Results Full Year Guidance Ranges Raised as Strong Recovery Continues Across Portfolio

Second Quarter 2021 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 17 Debt Summary 18 - 20 Capital Structure 21 Common Share and Unit Weighted Average Amounts Outstanding

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): July 27, 2021 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Com

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): June 17, 2021 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification Number) Two North Riverside Plaza Chicago, Illinois 60606 (Address of principal executive offices) (Zip Code) Registrant?s telephone number, including area code (312) 474-1300 Not applicable (Former name or former address, if changed since last report.

Quarterly Report - 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 March 31, 2021 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 (Equ

Equity Residential Reports First Quarter 2021 Results Full Year Guidance Ranges Raised as Broad-Based Recovery Continues

i First Quarter 2021 Results Table of Contents Earnings Release 1 - 4 Consolidated Statements of Operations 5 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 6 Consolidated Balance Sheets 7 Portfolio Summary 8 Same Store Results 9 - 14 Debt Summary 15 - 17 Capital Structure 18 Common Share and Unit Weighted Average Amounts Outstanding 19 Development and Lease-

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): April 27, 2021 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Co

- DEF 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defi

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

Seventh Amended and Restated Agreement of Limited Partnership for ERP Operating Limited Partnership, dated as of March 18, 2021 and effective as of January 1, 2020.

Exhibit 10.1 SEVENTH AMENDED AND RESTATED ERP OPERATING LIMITED PARTNERSHIP AGREEMENT OF LIMITED PARTNERSHIP As of January 1, 2020 TABLE OF CONTENTS 1. PARTNERSHIP 1 1.1 Continuation of Partnership; Partnership Interests 1 1.2 Name 2 2. Definitions 2 3. Capital 9 3.1 Capital Contributions of the Partners 9 3.2 Issuance and Conversion of Units 9 3.3 Additional Funds 13 3.4 Capital Accounts 14 3.5 I

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): March 18, 2021 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File Numb

List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership.

Exhibit 21 List of Subsidiaries of Equity Residential and ERP Operating Limited Partnership Entity Formation State 1 1145 Acquisition, L.

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2020 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 R

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 17)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 17)* Name of issuer: Equity Residential Title of Class of Securities: REIT CUSIP Number: 29476L107 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13

Equity Residential Reports Full Year 2020 Results Provides Full Year 2021 Guidance

i Fourth Quarter 2020 Results Table of Contents Earnings Release 1 - 5 Consolidated Statements of Operations 6 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 7 Consolidated Balance Sheets 8 Portfolio Summary 9 Portfolio Rollforward 10 Same Store Results 11 - 17 Debt Summary 18 - 20 Capital Structure 21 Common Share and Unit Weighted Average Amounts Outstandin

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 10, 2021 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization)

SC 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 ANNUAL FILING EQUITY RESIDENTIAL (NAME OF ISSUER) REIT (TITLE OF CLASS OF SECURITIES) 29476L107 (CUSIP NUMBER) 12/31/2020 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO WHICH THIS SCHEDULE IS FILED: (X) R

SC 13G/A

UNITED STATES SECURITIES EXCHANGE COMMISSION Washington, D.C. 20549 - SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* Equity Residential - (Name of Issuer) REIT - (Title of Class of Securities) 29476L107 - (CUSIP Number) December 31, 2020 - (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedu

SC 13G/A

us29476l1070012621.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 12) EQUITY RESIDENTIAL - (Name of Issuer) Common Stock - (Title of Class of Securities) 29476L107 - (CUSIP Number) December 31, 2020 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant t

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): December 17, 2020 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File N

Equity Residential Appoints Angela Aman to Board of Trustees

EX-99.1 Exhibit 99.1 NEWS RELEASE - FOR IMMEDIATE RELEASE CONTACT: Marty McKenna (312) 928-1901 December 17, 2020 Equity Residential Appoints Angela Aman to Board of Trustees Chicago, IL – December 17, 2020 - Equity Residential (NYSE: EQR) today announced the appointment of Angela Aman to the Company’s Board of Trustees to serve until the next annual meeting of shareholders. Ms. Aman, who will ser

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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 September 30, 2020 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 Reports Third Quarter 2020 Results

i Third Quarter 2020 Results Table of Contents Earnings Release 1 - 4 Consolidated Statements of Operations 5 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 6 Consolidated Balance Sheets 7 Portfolio Summary 8 Portfolio Rollforward 9 Same Store Results 10 - 16 Debt Summary 17 - 19 Capital Structure 20 Common Share and Unit Weighted Average Amounts Outstanding

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

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): October 27, 2020 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (

Quarterly Report - 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, 2020 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 (Equi

Amendment to the Equity Residential Supplemental Executive Retirement Plan, effective as of June 1, 2020.

Exhibit 10.1 AMENDMENT TO THE EQUITY RESIDENTIAL SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN Premises a.Equity Residential (the “Company”) maintains the Equity Residential Supplemental Executive Retirement Plan (the “Plan”). b.Section 10 of the Plan provides that the Company may amend the Plan at any time. c.The Company wishes to amend the Plan to eliminate certain entry dates. Amendments NOW, THEREFOR

Equity Residential Reports Second Quarter 2020 Results

i Second Quarter 2020 Results Table of Contents Earnings Release 1 - 4 Consolidated Statements of Operations 5 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 6 Consolidated Balance Sheets 7 Portfolio Summary 8 Portfolio Rollforward 9 Same Store Results 10 - 16 Debt Summary 17 - 19 Capital Structure 20 Common Share and Unit Weighted Average Amounts Outstanding

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): July 28, 2020 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Com

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): June 25, 2020 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification Number) Two North Riverside Plaza Chicago, Illinois 60606 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code (312) 474-1300 Not applicable (Former name or former address, if changed since last report.

- DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Pro

Second Amendment to Eighth Amended and Restated Bylaws of Equity Residential, effective as of May 4, 2020.

EX-3.1 Exhibit 3.1 EQUITY RESIDENTIAL SECOND AMENDMENT TO EIGHTH AMENDED AND RESTATED BYLAWS 1. The Eighth Amended and Restated Bylaws (the “Bylaws”) of Equity Residential, a Maryland real estate investment trust, are hereby amended by deleting therefrom Section 14 of Article II in its entirety and inserting in lieu thereof a new Section 14 of Article II as follows: Section 14. MEETINGS BY CONFERE

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): May 4, 2020 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification Number) Two North Riverside Plaza Chicago, Illinois 60606 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code (312) 474-1300 Not applicable (Former name or former address, if changed since last report.

Age 62 Retirement Agreement, dated February 27, 2020, by and between Equity Residential and Alan W. George.

Exhibit 10.1 AGE 62 RETIREMENT AGREEMENT This Age 62 Retirement Agreement (this “Agreement”) is entered into by and between Equity Residential (“Equity” or the “Company”) and Alan W. George (“Executive”) as of February 27, 2020. Witnesseth Whereas, Executive is currently an officer of Equity and an employee of an Equity affiliate; Whereas, Executive has elected to voluntarily retire, on March 31,

Quarterly Report - 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 March 31, 2020 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 (Equ

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 5, 2020 EQUITY RESIDENTIAL (Exact Name of Registrant as Specified in its Charter) Maryland 1-12252 13-3675988 (State or Other Jurisdiction of Incorporation or Organization) (Commi

Equity Residential Reports First Quarter 2020 Results Provides Update on COVID-19 Related Activities and Preliminary April 2020 Statistics; Withdraws Full Year 2020 Earnings Guidance

i First Quarter 2020 Results Table of Contents Earnings Release 1 - 4 Consolidated Statements of Operations 5 Consolidated Statements of Funds From Operations and Normalized Funds From Operations 6 Consolidated Balance Sheets 7 Portfolio Summary 8 Portfolio Rollforward 9 Same Store Results 10 - 14 Debt Summary 15 - 17 Capital Structure 18 Common Share and Unit Weighted Average Amounts Outstanding

EQR / Equity Residential DEF 14A - - DEF 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☑ Defi

EQR / Equity Residential DEFA14A - - DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): February 27, 2020 EQUITY RESIDENTIAL (Exact name of registrant as specified in its charter) Maryland 1-12252 13-3675988 (State or other jurisdiction of incorporation) (Commission File N