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The reporting person will provide, upon request by the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential scheduled to vest in the future."}],"balance_after":25782,"source":{"system":"sec-edgar","filing":"0001127602-18-032652","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760218032652/form4.xml","form_type":"4"}},{"id":3919357,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2018-05-24T20:20:37.000Z","date":"2018-05-23","kind":"sale","acquired":false,"shares":1928,"price":61.5539,"value":118675.9192,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price represents the weighted average price of the shares sold.  The shares were sold within a range of $61.5520 to $61.5610.  The reporting person will provide, upon request by the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential scheduled to vest in the future."}],"balance_after":38281,"source":{"system":"sec-edgar","filing":"0001127602-18-018742","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760218018742/form4.xml","form_type":"4"}},{"id":4071035,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2018-02-08T21:59:23.000Z","date":"2018-02-07","kind":"sale","acquired":false,"shares":5589,"price":58.182,"value":325179.198,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the sale of shares for the payment of tax liability incurred upon the vesting of restricted shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential scheduled to vest in the future."}],"balance_after":40859,"source":{"system":"sec-edgar","filing":"0001127602-18-004631","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760218004631/form4.xml","form_type":"4"}},{"id":4077432,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2018-02-05T21:21:18.000Z","date":"2018-02-01","kind":"grant","acquired":true,"shares":14549,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares scheduled to vest on February 1, 2021."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential (the \"Company\") scheduled to vest in the future."}],"balance_after":46448,"source":{"system":"sec-edgar","filing":"0001127602-18-003984","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760218003984/form4.xml","form_type":"4"}},{"id":4097042,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Restricted Units","published_at":"2018-01-18T21:13:57.000Z","date":"2018-01-17","kind":"grant","acquired":true,"shares":1945,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"Represents restricted limited partnership interests (\"Restricted Units\") in ERP Operating Limited Partnership (the \"Operating Partnership\"), the operating partnership of the Company, retained in connection with the settlement of an award under the 2015 LTI Plan.  Restricted Units are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the Operating Partnership (\"OP Units\") when the capital account related to the Restricted Units reaches a specified target for federal income tax purposes (provided such target is reached within ten years of issuance).  Subject to the vesting requirements of the grant and certain other restrictions, OP Units are exchangeable by the holder for common shares of the Company on a one-for-one basis or the cash value of such shares, at the Company's option.  The Restricted Units reflected in this report also include any OP Units into which such Restricted Units automatically convert."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Represents restricted limited partnership interests (\"Restricted Units\") in ERP Operating Limited Partnership (the \"Operating Partnership\"), the operating partnership of the Company, retained in connection with the settlement of an award under the 2015 LTI Plan.  Restricted Units are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the Operating Partnership (\"OP Units\") when the capital account related to the Restricted Units reaches a specified target for federal income tax purposes (provided such target is reached within ten years of issuance).  Subject to the vesting requirements of the grant and certain other restrictions, OP Units are exchangeable by the holder for common shares of the Company on a one-for-one basis or the cash value of such shares, at the Company's option.  The Restricted Units reflected in this report also include any OP Units into which such Restricted Units automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The Restricted Units are scheduled to vest on February 5, 2018."}],"balance_after":1945,"derivative":{"expiration_date":"2025-02-05","underlying":"Common Shares Of Beneficial Interest","underlying_shares":1945},"source":{"system":"sec-edgar","filing":"0001127602-18-002068","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760218002068/form4.xml","form_type":"4"}},{"id":4097041,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2018-01-18T21:13:57.000Z","date":"2018-01-17","kind":"grant","acquired":true,"shares":650,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares of Equity Residential (the \"Company\") issued in connection with the settlement of an award under the Company's 2015 Long-Term Incentive Plan (the \"2015 LTI Plan\")  which are scheduled to vest on February 5, 2018."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":31899,"source":{"system":"sec-edgar","filing":"0001127602-18-002068","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760218002068/form4.xml","form_type":"4"}},{"id":4242851,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2017-08-04T20:14:07.000Z","date":"2017-08-02","kind":"sale","acquired":false,"shares":10967,"price":67.9286,"value":744972.9562,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price represents the weighted average price of the shares sold.  The shares were sold within a range of $67.83 to $68.00.  The reporting person will provide, upon request by the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":31249,"source":{"system":"sec-edgar","filing":"0001127602-17-025004","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760217025004/form4.xml","form_type":"4"}},{"id":4287605,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Non-qualified Stock Option (Right to Buy)","published_at":"2017-06-09T20:11:45.000Z","date":"2017-06-08","kind":"exercise","acquired":false,"shares":14028,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents options which are scheduled to vest on February 6, 2015, February 6, 2016 and February 6, 2017."}],"balance_after":0,"derivative":{"exercise_price":48.13,"expiration_date":"2024-02-06","underlying":"Common Shares Of Beneficial Interest","underlying_shares":14028},"source":{"system":"sec-edgar","filing":"0001127602-17-021073","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760217021073/form4.xml","form_type":"4"}},{"id":4287604,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2017-06-09T20:11:45.000Z","date":"2017-06-08","kind":"sale","acquired":false,"shares":14028,"price":67.265,"value":943593.42,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price represents the weighted average price of the shares sold.  The shares were sold within a range of $67.25 to $67.31.  The reporting person will provide, upon request by the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":42216,"source":{"system":"sec-edgar","filing":"0001127602-17-021073","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760217021073/form4.xml","form_type":"4"}},{"id":4287603,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2017-06-09T20:11:45.000Z","date":"2017-06-08","kind":"exercise","acquired":true,"shares":14028,"price":48.13,"value":675167.64,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":56244,"source":{"system":"sec-edgar","filing":"0001127602-17-021073","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760217021073/form4.xml","form_type":"4"}},{"id":4287602,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2017-06-09T20:11:45.000Z","date":"2017-04-27","kind":"gift","acquired":false,"shares":768,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":42216,"source":{"system":"sec-edgar","filing":"0001127602-17-021073","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760217021073/form4.xml","form_type":"4"}},{"id":4462457,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2017-02-08T21:24:51.000Z","date":"2017-02-07","kind":"sale","acquired":false,"shares":5633,"price":60.4602,"value":340572.3066,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the sale of shares for the payment of tax liability incurred upon the vesting of restricted shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":42984,"source":{"system":"sec-edgar","filing":"0001127602-17-004607","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760217004607/form4.xml","form_type":"4"}},{"id":4467090,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Restricted Units","published_at":"2017-02-06T21:43:03.000Z","date":"2017-02-02","kind":"grant","acquired":true,"shares":8856,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"On February 2, 2017, the reporting person received a grant of Series 2017B restricted limited partnership interests (\"Restricted Units\") in ERP Operating Limited Partnership (the \"Operating Partnership\"), the operating partnership of Equity Residential (the \"Company\"), in lieu of restricted shares of the Company as part of the Company's annual grant of long-term compensation.  Restricted Units are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the Operating Partnership (\"OP Units\") when the capital account related to the Restricted Units reaches a specified target for federal income tax purposes (provided such target is reached within ten years of issuance).  Subject to the vesting requirements of the grant and certain other restrictions, OP Units are exchangeable by the holder for common shares of the Company on a one-for-one basis or the cash value of such shares, at the Company's option.  The Restricted Units reflected in this report also include any OP Units into which such Restricted Units automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"These Restricted Units are scheduled to vest on February 2, 2020."}],"balance_after":8856,"derivative":{"expiration_date":"2027-02-02","underlying":"Common Shares Of Beneficial Interest","underlying_shares":8856},"source":{"system":"sec-edgar","filing":"0001127602-17-004074","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760217004074/form4.xml","form_type":"4"}},{"id":4510845,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2016-12-29T21:13:03.000Z","date":"2016-12-28","kind":"sale","acquired":false,"shares":3000,"price":62.752,"value":188256.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":48617,"source":{"system":"sec-edgar","filing":"0001127602-16-071016","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760216071016/form4.xml","form_type":"4"}},{"id":4529094,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2016-12-08T22:21:57.000Z","date":"2016-12-07","kind":"sale","acquired":false,"shares":17,"price":62.63,"value":1064.71,"ownership":{"direct":false,"nature":"401(k) Plan"},"balance_after":0,"source":{"system":"sec-edgar","filing":"0001127602-16-069520","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760216069520/form4.xml","form_type":"4"}},{"id":4556042,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":162519,"kind":"person","name":"Santee David S","position":1,"cik":"0001383436","reported_name":"Santee David S","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2016-11-15T21:27:41.000Z","date":"2016-11-14","kind":"grant","acquired":true,"shares":1928,"price":51.85,"value":99966.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares acquired through Equity Residential's Employee Share Purchase Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":51617,"source":{"system":"sec-edgar","filing":"0001127602-16-067207","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000112760216067207/form4.xml","form_type":"4"}}]}