<ACCESSION-NUMBER>0001193125-20-320078 <TYPE>8-K <PUBLIC-DOCUMENT-COUNT>16 <PERIOD>20201217 <ITEMS>5.02 <ITEMS>9.01 <FILING-DATE>20201217 <DATE-OF-FILING-DATE-CHANGE>20201217 <FILER> <COMPANY-DATA> <CONFORMED-NAME>EQUITY RESIDENTIAL <CIK>0000906107 <ASSIGNED-SIC>6798 <IRS-NUMBER>363877868 <STATE-OF-INCORPORATION>MD <FISCAL-YEAR-END>1231 </COMPANY-DATA> <FILING-VALUES> <FORM-TYPE>8-K <ACT>34 <FILE-NUMBER>001-12252 <FILM-NUMBER>201396382 </FILING-VALUES> <BUSINESS-ADDRESS> <STREET1>EQUITY RESIDENTIAL <STREET2>TWO NORTH RIVERSIDE PLAZA, SUITE 400 <CITY>CHICAGO <STATE>IL <ZIP>60606 <PHONE>3129281178 </BUSINESS-ADDRESS> <MAIL-ADDRESS> <STREET1>TWO NORTH RIVERSIDE PLAZA <STREET2>SUITE 400 <CITY>CHICAGO <STATE>IL <ZIP>60606 </MAIL-ADDRESS> <FORMER-COMPANY> <FORMER-CONFORMED-NAME>EQUITY RESIDENTIAL PROPERTIES TRUST <DATE-CHANGED>19930524 </FORMER-COMPANY> </FILER> <FILER> <COMPANY-DATA> <CONFORMED-NAME>ERP OPERATING LTD PARTNERSHIP <CIK>0000931182 <ASSIGNED-SIC>6798 <IRS-NUMBER>363894853 <STATE-OF-INCORPORATION>MD <FISCAL-YEAR-END>1231 </COMPANY-DATA> <FILING-VALUES> <FORM-TYPE>8-K <ACT>34 <FILE-NUMBER>000-24920 <FILM-NUMBER>201396381 </FILING-VALUES> <BUSINESS-ADDRESS> <STREET1>TWO N RIVERSIDE PLZ <STREET2>STE 400 <CITY>CHICAGO <STATE>IL <ZIP>60606 <PHONE>3124741300 </BUSINESS-ADDRESS> <MAIL-ADDRESS> <STREET1>TWO N RIVERSIDE PLAZA <STREET2>SUITE 450 <CITY>CHICAGO <STATE>IL <ZIP>60606 </MAIL-ADDRESS> </FILER>