{"transactions":[{"id":4615878,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true}}],"security":"Operating Partnership Units","published_at":"2026-09-11T20:15:40.000Z","date":"2026-09-09","kind":"gift","planned":false,"acquired":true,"shares":977,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."}],"balance_after":427389,"derivative":{"exercise_price":0,"underlying":"Common Shares Of Beneficial Interest","underlying_shares":977},"source":{"system":"sec-edgar","filing":"0000906107-26-000078","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1219726/000090610726000078/form4.xml","form_type":"4"}},{"id":4615877,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true}}],"security":"Operating Partnership Units","published_at":"2026-09-11T20:15:40.000Z","date":"2026-09-09","kind":"gift","planned":false,"acquired":false,"shares":977,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"2020A DN GRAT"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"This transaction involved a gift of OP Units by a grantor retained annuity trust to the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents OP Units beneficially owned by a grantor retained annuity trust for the benefit of the reporting person."}],"balance_after":1775,"derivative":{"exercise_price":0,"underlying":"Common Shares Of Beneficial Interest","underlying_shares":977},"source":{"system":"sec-edgar","filing":"0000906107-26-000078","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1219726/000090610726000078/form4.xml","form_type":"4"}},{"id":4615876,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true}}],"security":"Operating Partnership Units","published_at":"2026-09-11T20:15:40.000Z","date":"2026-09-09","kind":"gift","planned":false,"acquired":true,"shares":1325,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"2020A DN GRAT"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents OP Units beneficially owned by a grantor retained annuity trust for the benefit of the reporting person."}],"balance_after":2752,"derivative":{"exercise_price":0,"underlying":"Common Shares Of Beneficial Interest","underlying_shares":1325},"source":{"system":"sec-edgar","filing":"0000906107-26-000078","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1219726/000090610726000078/form4.xml","form_type":"4"}},{"id":4615875,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true}}],"security":"Operating Partnership Units","published_at":"2026-09-11T20:15:40.000Z","date":"2026-09-09","kind":"gift","planned":false,"acquired":false,"shares":1325,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"LLC"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction involved a gift of OP Units by a limited liability company of which the reporting person is the manager to a grantor retained annuity trust for the benefit of the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents OP Units beneficially owned by a limited liability company, of which the reporting person is the manager."}],"balance_after":85420,"derivative":{"exercise_price":0,"underlying":"Common Shares Of Beneficial Interest","underlying_shares":1325},"source":{"system":"sec-edgar","filing":"0000906107-26-000078","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1219726/000090610726000078/form4.xml","form_type":"4"}},{"id":4615874,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true}}],"security":"Operating Partnership Units","published_at":"2026-09-11T20:15:40.000Z","date":"2026-09-09","kind":"gift","planned":false,"acquired":true,"shares":1322,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."}],"balance_after":426412,"derivative":{"exercise_price":0,"underlying":"Common Shares Of Beneficial Interest","underlying_shares":1322},"source":{"system":"sec-edgar","filing":"0000906107-26-000078","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1219726/000090610726000078/form4.xml","form_type":"4"}},{"id":4615873,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true}}],"security":"Operating Partnership Units","published_at":"2026-09-11T20:15:40.000Z","date":"2026-09-09","kind":"gift","planned":false,"acquired":false,"shares":1322,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"2020 DN GRAT"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"This transaction involved a gift of OP Units by a grantor retained annuity trust to the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents OP Units beneficially owned by a grantor retained annuity trust for the benefit of the reporting person."}],"balance_after":11,"derivative":{"exercise_price":0,"underlying":"Common Shares Of Beneficial Interest","underlying_shares":1322},"source":{"system":"sec-edgar","filing":"0000906107-26-000078","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1219726/000090610726000078/form4.xml","form_type":"4"}},{"id":4615872,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true}}],"security":"Operating Partnership Units","published_at":"2026-09-11T20:15:40.000Z","date":"2026-09-09","kind":"gift","planned":false,"acquired":true,"shares":1325,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"2020 DN GRAT"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents OP Units beneficially owned by a grantor retained annuity trust for the benefit of the reporting person."}],"balance_after":1333,"derivative":{"exercise_price":0,"underlying":"Common Shares Of Beneficial Interest","underlying_shares":1325},"source":{"system":"sec-edgar","filing":"0000906107-26-000078","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1219726/000090610726000078/form4.xml","form_type":"4"}},{"id":4615871,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true}}],"security":"Operating Partnership Units","published_at":"2026-09-11T20:15:40.000Z","date":"2026-09-09","kind":"gift","planned":false,"acquired":false,"shares":1325,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"LLC"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction involved a gift of OP Units by a limited liability company of which the reporting person is the manager to a grantor retained annuity trust for the benefit of the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The OP Units reflected in this report are previously reported Restricted Units which have automatically converted to OP Units per their terms.  The OP Units do not expire and are fully vested, transferable and can be exchanged by the holder for common shares of Vivmark Residential (the \"Company\") on a one-for-one basis or, at the Company's option, for the cash value of such shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents OP Units beneficially owned by a limited liability company, of which the reporting person is the manager."}],"balance_after":86745,"derivative":{"exercise_price":0,"underlying":"Common Shares Of Beneficial Interest","underlying_shares":1325},"source":{"system":"sec-edgar","filing":"0000906107-26-000078","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1219726/000090610726000078/form4.xml","form_type":"4"}},{"id":4615847,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21839,"kind":"person","name":"Carr Chris","position":1,"cik":"0001821096","reported_name":"Carr Chris","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-09-11T20:11:31.000Z","date":"2026-09-09","kind":"sale","planned":false,"acquired":false,"shares":1130,"price":65.28,"value":73766.4,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Direct total includes restricted shares of Vivmark Residential scheduled to vest in the future."}],"balance_after":4461,"source":{"system":"sec-edgar","filing":"0000906107-26-000077","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1821096/000090610726000077/form4.xml","form_type":"4"}},{"id":590,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Restricted Units","published_at":"2026-09-02T20:25:12.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":13805,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F11","text":"Represents RUs in the Operating Partnership retained in connection with the settlement of an award under the Company's 2026 Long-Term Incentive Plan."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"RUs 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 RUs 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 conditions, OP Units are exchangeable by the holder for common shares of the Company on a one-for-one basis or cash value of such shares, at the Company's option.  The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F12","text":"The RUs are scheduled to vest on January 2, 2029."}],"balance_after":13805,"derivative":{"expiration_date":"2036-01-01","underlying":"Common Shares Of Beneficial Interest","underlying_shares":13805},"source":{"system":"sec-edgar","filing":"0000906107-26-000076","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1691784/000090610726000076/form4.xml","form_type":"4"}},{"id":589,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Restricted Units","published_at":"2026-09-02T20:25:12.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":11310,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F9","text":"Represents RUs in the Operating Partnership retained in connection with the settlement of an award under the Company's 2025 Long-Term Incentive Plan."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"RUs 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 RUs 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 conditions, OP Units are exchangeable by the holder for common shares of the Company on a one-for-one basis or cash value of such shares, at the Company's option.  The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F10","text":"The RUs are scheduled to vest on January 3, 2028."}],"balance_after":11310,"derivative":{"expiration_date":"2035-01-01","underlying":"Common Shares Of Beneficial Interest","underlying_shares":11310},"source":{"system":"sec-edgar","filing":"0000906107-26-000076","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1691784/000090610726000076/form4.xml","form_type":"4"}},{"id":588,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Restricted Units","published_at":"2026-09-02T20:25:12.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":11055,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F6","text":"Represents restricted limited partnership interests (\"RUs\") 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 Company's 2024 Long-Term Incentive Plan."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"RUs 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 RUs 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 conditions, OP Units are exchangeable by the holder for common shares of the Company on a one-for-one basis or cash value of such shares, at the Company's option.  The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"The RUs are scheduled to vest on January 4, 2027."}],"balance_after":11055,"derivative":{"expiration_date":"2034-01-01","underlying":"Common Shares Of Beneficial Interest","underlying_shares":11055},"source":{"system":"sec-edgar","filing":"0000906107-26-000076","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1691784/000090610726000076/form4.xml","form_type":"4"}},{"id":587,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-09-02T20:25:12.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":13201,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents restricted shares of the Company issued in connection with the settlement of an award under the Company's 2026 Long-Term Incentive Plan which are scheduled to vest on January 2, 2029."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":79270,"source":{"system":"sec-edgar","filing":"0000906107-26-000076","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1691784/000090610726000076/form4.xml","form_type":"4"}},{"id":586,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-09-02T20:25:12.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":10820,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents restricted shares of the Company issued in connection with the settlement of an award under the Company's 2025 Long-Term Incentive Plan which are scheduled to vest on January 3, 2028."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":66069,"source":{"system":"sec-edgar","filing":"0000906107-26-000076","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1691784/000090610726000076/form4.xml","form_type":"4"}},{"id":585,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-09-02T20:25:12.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":10536,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares of Vivmark Residential (formerly known as Equity Residential) (the \"Company\") issued in connection with the settlement of an award under the Company's 2024 Long-Term Incentive Plan which are scheduled to vest on January 4, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":55249,"source":{"system":"sec-edgar","filing":"0000906107-26-000076","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1691784/000090610726000076/form4.xml","form_type":"4"}},{"id":535,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":500,"kind":"person","name":"Fenster Scott","position":1,"cik":"0001722913","reported_name":"Fenster Scott","relationship":{"officer":true,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Units","published_at":"2026-09-02T20:19:16.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":14397,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F10","text":"Represents RUs in the Operating Partnership retained in connection with the settlement of an award under the Company's 2026 Long-Term Incentive Plan."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"RUs 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 RUs 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 conditions, OP Units are exchangeable by the holder for common shares of the Company on a one-for-one basis or cash value of such shares, at the Company's option.  The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"The RUs are scheduled to vest on January 2, 2029."}],"balance_after":14397,"derivative":{"expiration_date":"2036-01-01","underlying":"Common Shares Of Beneficial Interest","underlying_shares":14397},"source":{"system":"sec-edgar","filing":"0000906107-26-000075","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1722913/000090610726000075/form4.xml","form_type":"4"}},{"id":534,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":500,"kind":"person","name":"Fenster Scott","position":1,"cik":"0001722913","reported_name":"Fenster Scott","relationship":{"officer":true,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Units","published_at":"2026-09-02T20:19:16.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":4792,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F8","text":"Represents RUs in the Operating Partnership retained in connection with the settlement of an award under the Company's 2025 Long-Term Incentive Plan."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"RUs 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 RUs 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 conditions, OP Units are exchangeable by the holder for common shares of the Company on a one-for-one basis or cash value of such shares, at the Company's option.  The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The RUs are scheduled to vest on January 3, 2028."}],"balance_after":4792,"derivative":{"expiration_date":"2035-01-01","underlying":"Common Shares Of Beneficial Interest","underlying_shares":4792},"source":{"system":"sec-edgar","filing":"0000906107-26-000075","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1722913/000090610726000075/form4.xml","form_type":"4"}},{"id":533,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":500,"kind":"person","name":"Fenster Scott","position":1,"cik":"0001722913","reported_name":"Fenster Scott","relationship":{"officer":true,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Units","published_at":"2026-09-02T20:19:16.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":9233,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F5","text":"Represents restricted limited partnership interests (\"RUs\") 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 Company's 2024 Long-Term Incentive Plan."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"RUs 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 RUs 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 conditions, OP Units are exchangeable by the holder for common shares of the Company on a one-for-one basis or cash value of such shares, at the Company's option.  The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The RUs are scheduled to vest on January 4, 2027."}],"balance_after":9233,"derivative":{"expiration_date":"2034-01-01","underlying":"Common Shares Of Beneficial Interest","underlying_shares":9233},"source":{"system":"sec-edgar","filing":"0000906107-26-000075","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1722913/000090610726000075/form4.xml","form_type":"4"}},{"id":532,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":500,"kind":"person","name":"Fenster Scott","position":1,"cik":"0001722913","reported_name":"Fenster Scott","relationship":{"officer":true,"officer_title":"EVP & General Counsel"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-09-02T20:19:16.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":4584,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares of Vivmark Residential (formerly known as Equity Residential) (the \"Company\") issued in connection with the settlement of an award under the Company's 2025 Long-Term Incentive Plan which are scheduled to vest on January 3, 2028."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of the Company scheduled to vest in the future."}],"balance_after":23022,"source":{"system":"sec-edgar","filing":"0000906107-26-000075","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1722913/000090610726000075/form4.xml","form_type":"4"}},{"id":677989,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":20560,"kind":"person","name":"Willson Sean Thomas","position":1,"cik":"0002048274","reported_name":"Willson Sean Thomas","relationship":{"officer":true,"officer_title":"Senior Vice President & CAO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-24T20:28:19.000Z","date":"2026-08-21","kind":"sale","planned":false,"acquired":false,"shares":300,"price":66.31,"value":19893.0,"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":17988,"source":{"system":"sec-edgar","filing":"0000906107-26-000073","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000073/form4.xml","form_type":"4"}},{"id":677988,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":20555,"kind":"person","name":"Birenbaum Matthew H.","position":1,"cik":"0001532949","reported_name":"Birenbaum Matthew H.","relationship":{"officer":true,"officer_title":"Executive Vice President & CDO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-24T20:24:42.000Z","date":"2026-08-20","kind":"gift","planned":false,"acquired":false,"shares":1400,"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":272749,"source":{"system":"sec-edgar","filing":"0000906107-26-000072","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000072/form4.xml","form_type":"4"}},{"id":682134,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":20560,"kind":"person","name":"Willson Sean Thomas","position":1,"cik":"0002048274","reported_name":"Willson Sean Thomas","relationship":{"officer":true,"officer_title":"Senior Vice President & CAO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T01:17:20.000Z","date":"2026-08-19","kind":"sale","planned":false,"acquired":false,"shares":250,"price":64.32,"value":16080.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Direct total includes restricted shares of VMRK scheduled to vest in the future."}],"balance_after":18288,"source":{"system":"sec-edgar","filing":"0000906107-26-000071","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000071/form4.xml","form_type":"4"}},{"id":682133,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":20560,"kind":"person","name":"Willson Sean Thomas","position":1,"cik":"0002048274","reported_name":"Willson Sean Thomas","relationship":{"officer":true,"officer_title":"Senior Vice President & CAO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T01:17:20.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2052,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"Represents restricted shares scheduled to vest on August 17, 2029."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Direct total includes restricted shares of VMRK scheduled to vest in the future."}],"balance_after":18538,"source":{"system":"sec-edgar","filing":"0000906107-26-000071","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000071/form4.xml","form_type":"4"}},{"id":682132,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":20560,"kind":"person","name":"Willson Sean Thomas","position":1,"cik":"0002048274","reported_name":"Willson Sean Thomas","relationship":{"officer":true,"officer_title":"Senior Vice President & CAO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T01:17:20.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":3994,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\"). Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a VMRK restricted share award."},{"field":"kind","element":"transactionCoding","label":"F3","text":"Each VMRK restricted share award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of common shares of beneficial interest, $0.01 par value per share (\"VMRK Common Shares\"), of VMRK, rounded to the nearest whole number of shares, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Direct total includes restricted shares of VMRK scheduled to vest in the future."}],"balance_after":16486,"source":{"system":"sec-edgar","filing":"0000906107-26-000071","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000071/form4.xml","form_type":"4"}},{"id":682130,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21854,"kind":"person","name":"SCHULMAN EDWARD M","position":1,"cik":"0001219716","reported_name":"SCHULMAN EDWARD M","relationship":{"officer":true,"officer_title":"EVP, Legal Affairs"}}],"security":"Restricted Units","published_at":"2026-08-20T01:15:14.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":24019,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F10","text":"On August 17, 2026, the Reporting Person received a grant of RUs in the OP in lieu of restricted shares of VMRK."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"The RUs are scheduled to vest on August 17, 2029"}],"balance_after":24019,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":24019},"source":{"system":"sec-edgar","filing":"0000906107-26-000070","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000070/form4.xml","form_type":"4"}},{"id":682129,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21854,"kind":"person","name":"SCHULMAN EDWARD M","position":1,"cik":"0001219716","reported_name":"SCHULMAN EDWARD M","relationship":{"officer":true,"officer_title":"EVP, Legal Affairs"}}],"security":"Restricted Units","published_at":"2026-08-20T01:15:14.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":12960,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F4","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), the OP, and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F5","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The RUs are scheduled to vest on March 1, 2029."}],"balance_after":12960,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":12960},"source":{"system":"sec-edgar","filing":"0000906107-26-000070","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000070/form4.xml","form_type":"4"}},{"id":682128,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21854,"kind":"person","name":"SCHULMAN EDWARD M","position":1,"cik":"0001219716","reported_name":"SCHULMAN EDWARD M","relationship":{"officer":true,"officer_title":"EVP, Legal Affairs"}}],"security":"Restricted Units","published_at":"2026-08-20T01:15:14.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":5016,"price":0.5,"value":2508.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F4","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), the OP, and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F5","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"The RUs are scheduled to vest on March 1, 2028. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":5016,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":5016},"source":{"system":"sec-edgar","filing":"0000906107-26-000070","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000070/form4.xml","form_type":"4"}},{"id":682127,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21854,"kind":"person","name":"SCHULMAN EDWARD M","position":1,"cik":"0001219716","reported_name":"SCHULMAN EDWARD M","relationship":{"officer":true,"officer_title":"EVP, Legal Affairs"}}],"security":"Restricted Units","published_at":"2026-08-20T01:15:14.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":5566,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F4","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), the OP, and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F5","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"The RUs are scheduled to vest on March 1, 2028. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":5566,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":5566},"source":{"system":"sec-edgar","filing":"0000906107-26-000070","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000070/form4.xml","form_type":"4"}},{"id":682126,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21854,"kind":"person","name":"SCHULMAN EDWARD M","position":1,"cik":"0001219716","reported_name":"SCHULMAN EDWARD M","relationship":{"officer":true,"officer_title":"EVP, Legal Affairs"}}],"security":"Restricted Units","published_at":"2026-08-20T01:15:14.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":12124,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F4","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), the OP, and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F5","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The RUs are scheduled to vest on March 1, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":12124,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":12124},"source":{"system":"sec-edgar","filing":"0000906107-26-000070","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000070/form4.xml","form_type":"4"}},{"id":682125,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21854,"kind":"person","name":"SCHULMAN EDWARD M","position":1,"cik":"0001219716","reported_name":"SCHULMAN EDWARD M","relationship":{"officer":true,"officer_title":"EVP, Legal Affairs"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T01:15:14.000Z","date":"2026-08-18","kind":"sale","planned":false,"acquired":false,"shares":16595,"price":64.29,"value":1066892.55,"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 $64.11 to $64.39.  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 Vivmark Residential scheduled to vest in the future."}],"balance_after":48776,"source":{"system":"sec-edgar","filing":"0000906107-26-000070","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000070/form4.xml","form_type":"4"}},{"id":682124,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21853,"kind":"person","name":"Walsh Alaine Susan","position":1,"cik":"0002009341","reported_name":"Walsh Alaine Susan","relationship":{"officer":true,"officer_title":"EVP, Human Capital & Admin"}}],"security":"Restricted Units","published_at":"2026-08-20T01:12:41.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":9007,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F8","text":"On August 17, 2026, the Reporting Person received a grant of RUs in the OP in lieu of restricted shares of VMRK."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The RUs are scheduled to vest on August 17, 2029."}],"balance_after":9007,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":9007},"source":{"system":"sec-edgar","filing":"0000906107-26-000069","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000069/form4.xml","form_type":"4"}},{"id":682123,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21853,"kind":"person","name":"Walsh Alaine Susan","position":1,"cik":"0002009341","reported_name":"Walsh Alaine Susan","relationship":{"officer":true,"officer_title":"EVP, Human Capital & Admin"}}],"security":"Restricted Units","published_at":"2026-08-20T01:12:41.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":3667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The RUs are scheduled to vest on March 1, 2029."}],"balance_after":3667,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":3667},"source":{"system":"sec-edgar","filing":"0000906107-26-000069","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000069/form4.xml","form_type":"4"}},{"id":682122,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21853,"kind":"person","name":"Walsh Alaine Susan","position":1,"cik":"0002009341","reported_name":"Walsh Alaine Susan","relationship":{"officer":true,"officer_title":"EVP, Human Capital & Admin"}}],"security":"Restricted Units","published_at":"2026-08-20T01:12:41.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":1422,"price":0.5,"value":711.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RUs are scheduled to vest on March 1, 2028. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":1422,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":1422},"source":{"system":"sec-edgar","filing":"0000906107-26-000069","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000069/form4.xml","form_type":"4"}},{"id":682121,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21853,"kind":"person","name":"Walsh Alaine Susan","position":1,"cik":"0002009341","reported_name":"Walsh Alaine Susan","relationship":{"officer":true,"officer_title":"EVP, Human Capital & Admin"}}],"security":"Restricted Units","published_at":"2026-08-20T01:12:41.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":1575,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RUs are scheduled to vest on March 1, 2028. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":1575,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":1575},"source":{"system":"sec-edgar","filing":"0000906107-26-000069","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000069/form4.xml","form_type":"4"}},{"id":682120,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21853,"kind":"person","name":"Walsh Alaine Susan","position":1,"cik":"0002009341","reported_name":"Walsh Alaine Susan","relationship":{"officer":true,"officer_title":"EVP, Human Capital & Admin"}}],"security":"Restricted Units","published_at":"2026-08-20T01:12:41.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":3363,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RUs are scheduled to vest on March 1, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":3363,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":3363},"source":{"system":"sec-edgar","filing":"0000906107-26-000069","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000069/form4.xml","form_type":"4"}},{"id":682119,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21852,"kind":"person","name":"Thomas Pamela Rogers","position":1,"cik":"0002028044","reported_name":"Thomas Pamela Rogers","relationship":{"officer":true,"officer_title":"EVP, Portfolio & Asset Mgmt"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T01:10:47.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":18850,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"Represents restricted shares scheduled to vest on August 17, 2029."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Direct total includes restricted shares of VMRK scheduled to vest in the future."}],"balance_after":85543,"source":{"system":"sec-edgar","filing":"0000906107-26-000068","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000068/form4.xml","form_type":"4"}},{"id":682118,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21852,"kind":"person","name":"Thomas Pamela Rogers","position":1,"cik":"0002028044","reported_name":"Thomas Pamela Rogers","relationship":{"officer":true,"officer_title":"EVP, Portfolio & Asset Mgmt"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T01:10:47.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":37875,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\"). Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a VMRK restricted share award."},{"field":"kind","element":"transactionCoding","label":"F3","text":"Each VMRK restricted share award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of common shares of beneficial interest, $0.01 par value per share (\"VMRK Common Shares\"), of VMRK, rounded to the nearest whole number of shares, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Direct total includes restricted shares of VMRK scheduled to vest in the future."}],"balance_after":66693,"source":{"system":"sec-edgar","filing":"0000906107-26-000068","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000068/form4.xml","form_type":"4"}},{"id":682117,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":20555,"kind":"person","name":"Birenbaum Matthew H.","position":1,"cik":"0001532949","reported_name":"Birenbaum Matthew H.","relationship":{"officer":true,"officer_title":"Executive Vice President & CDO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:08:00.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":31525,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F11","text":"On August 17, 2026, the Reporting Person received a grant of restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\") the operating partnership of Vivmark Residential (the \"Company\"), in lieu of restricted shares of the Company."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F8","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F12","text":"The RUs are scheduled to vest on August 17, 2029."}],"balance_after":31525,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":31525},"source":{"system":"sec-edgar","filing":"0000906107-26-000067","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000067/form4.xml","form_type":"4"}},{"id":682116,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":20555,"kind":"person","name":"Birenbaum Matthew H.","position":1,"cik":"0001532949","reported_name":"Birenbaum Matthew H.","relationship":{"officer":true,"officer_title":"Executive Vice President & CDO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:08:00.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":15018,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F5","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F6","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F7","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F8","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F10","text":"The RUs are scheduled to vest on March 1, 2029."}],"balance_after":15018,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":15018},"source":{"system":"sec-edgar","filing":"0000906107-26-000067","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000067/form4.xml","form_type":"4"}},{"id":682115,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":20555,"kind":"person","name":"Birenbaum Matthew H.","position":1,"cik":"0001532949","reported_name":"Birenbaum Matthew H.","relationship":{"officer":true,"officer_title":"Executive Vice President & CDO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:08:00.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":13292,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F5","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F6","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F7","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F8","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The RUs are scheduled to vest on March 1, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":13292,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":13292},"source":{"system":"sec-edgar","filing":"0000906107-26-000067","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000067/form4.xml","form_type":"4"}},{"id":682114,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":20555,"kind":"person","name":"Birenbaum Matthew H.","position":1,"cik":"0001532949","reported_name":"Birenbaum Matthew H.","relationship":{"officer":true,"officer_title":"Executive Vice President & CDO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:08:00.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":13208,"price":0.5,"value":6604.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F5","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F6","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F7","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F8","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The RUs are scheduled to vest on March 1, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":13208,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":13208},"source":{"system":"sec-edgar","filing":"0000906107-26-000067","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000067/form4.xml","form_type":"4"}},{"id":682113,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":20555,"kind":"person","name":"Birenbaum Matthew H.","position":1,"cik":"0001532949","reported_name":"Birenbaum Matthew H.","relationship":{"officer":true,"officer_title":"Executive Vice President & CDO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T01:08:00.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":35946,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\"). Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a VMRK restricted share award."},{"field":"kind","element":"transactionCoding","label":"F3","text":"Each VMRK restricted share award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of common shares of beneficial interest, $0.01 par value per share (\"VMRK Common Shares\"), of VMRK, rounded to the nearest whole number of shares, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Direct total includes restricted shares of VMRK scheduled to vest in the future."}],"balance_after":274149,"source":{"system":"sec-edgar","filing":"0000906107-26-000067","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000067/form4.xml","form_type":"4"}},{"id":682112,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21851,"kind":"person","name":"Breslin Sean J.","position":1,"cik":"0001463826","reported_name":"Breslin Sean J.","relationship":{"officer":true,"officer_title":"EVP & CI & GO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:05:31.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":31525,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F8","text":"On August 17, 2026, the Reporting Person received a grant of RUs in the OP in lieu of restricted shares of VMRK."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The RUs are scheduled to vest on August 17, 2029."}],"balance_after":31525,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":31525},"source":{"system":"sec-edgar","filing":"0000906107-26-000066","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000066/form4.xml","form_type":"4"}},{"id":682111,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21851,"kind":"person","name":"Breslin Sean J.","position":1,"cik":"0001463826","reported_name":"Breslin Sean J.","relationship":{"officer":true,"officer_title":"EVP & CI & GO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:05:31.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":28056,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The RUs are scheduled to vest on March 1, 2029."}],"balance_after":28056,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":28056},"source":{"system":"sec-edgar","filing":"0000906107-26-000066","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000066/form4.xml","form_type":"4"}},{"id":682110,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21851,"kind":"person","name":"Breslin Sean J.","position":1,"cik":"0001463826","reported_name":"Breslin Sean J.","relationship":{"officer":true,"officer_title":"EVP & CI & GO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:05:31.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":10856,"price":0.5,"value":5428.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RUs are scheduled to vest on March 1, 2028. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":10856,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":10856},"source":{"system":"sec-edgar","filing":"0000906107-26-000066","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000066/form4.xml","form_type":"4"}},{"id":682109,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21851,"kind":"person","name":"Breslin Sean J.","position":1,"cik":"0001463826","reported_name":"Breslin Sean J.","relationship":{"officer":true,"officer_title":"EVP & CI & GO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:05:31.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":12052,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RUs are scheduled to vest on March 1, 2028. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":12052,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":12052},"source":{"system":"sec-edgar","filing":"0000906107-26-000066","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000066/form4.xml","form_type":"4"}},{"id":682108,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21851,"kind":"person","name":"Breslin Sean J.","position":1,"cik":"0001463826","reported_name":"Breslin Sean J.","relationship":{"officer":true,"officer_title":"EVP & CI & GO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:05:31.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":26500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RUs are scheduled to vest on March 1, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":26500,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":26500},"source":{"system":"sec-edgar","filing":"0000906107-26-000066","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000066/form4.xml","form_type":"4"}},{"id":682107,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21850,"kind":"person","name":"O'Shea Kevin P.","position":1,"cik":"0001564771","reported_name":"O'Shea Kevin P.","relationship":{"officer":true,"officer_title":"Executive Vice President & CFO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:03:01.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":28522,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F8","text":"On August 17, 2026, the Reporting Person received a grant of RUs in the OP in lieu of restricted shares of VMRK."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The RUs are scheduled to vest on August 17, 2029."}],"balance_after":28522,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":28522},"source":{"system":"sec-edgar","filing":"0000906107-26-000065","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000065/form4.xml","form_type":"4"}},{"id":682106,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21850,"kind":"person","name":"O'Shea Kevin P.","position":1,"cik":"0001564771","reported_name":"O'Shea Kevin P.","relationship":{"officer":true,"officer_title":"Executive Vice President & CFO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:03:01.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":24771,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F2","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The RUs are scheduled to vest on March 1, 2029."}],"balance_after":24771,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":24771},"source":{"system":"sec-edgar","filing":"0000906107-26-000065","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000065/form4.xml","form_type":"4"}},{"id":682105,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21850,"kind":"person","name":"O'Shea Kevin P.","position":1,"cik":"0001564771","reported_name":"O'Shea Kevin P.","relationship":{"officer":true,"officer_title":"Executive Vice President & CFO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:03:01.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":9586,"price":0.5,"value":4793.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F2","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RUs are scheduled to vest on March 1, 2028. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":9586,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":9586},"source":{"system":"sec-edgar","filing":"0000906107-26-000065","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000065/form4.xml","form_type":"4"}},{"id":682104,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21850,"kind":"person","name":"O'Shea Kevin P.","position":1,"cik":"0001564771","reported_name":"O'Shea Kevin P.","relationship":{"officer":true,"officer_title":"Executive Vice President & CFO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:03:01.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":10639,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F2","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RUs are scheduled to vest on March 1, 2028. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":10639,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":10639},"source":{"system":"sec-edgar","filing":"0000906107-26-000065","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000065/form4.xml","form_type":"4"}},{"id":682103,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21850,"kind":"person","name":"O'Shea Kevin P.","position":1,"cik":"0001564771","reported_name":"O'Shea Kevin P.","relationship":{"officer":true,"officer_title":"Executive Vice President & CFO"}}],"security":"Restricted Units","published_at":"2026-08-20T01:03:01.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":23341,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F2","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RUs are scheduled to vest on March 1, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":23341,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":23341},"source":{"system":"sec-edgar","filing":"0000906107-26-000065","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000065/form4.xml","form_type":"4"}},{"id":682102,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":500,"kind":"person","name":"Fenster Scott","position":1,"cik":"0001722913","reported_name":"Fenster Scott","relationship":{"officer":true,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Units","published_at":"2026-08-20T01:00:32.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":24019,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On August 17, 2026, the Reporting Person received a grant of restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\") the operating partnership of Vivmark Residential (the \"Company\"), in lieu of restricted shares of the Company."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RUs are scheduled to vest on August 17, 2029."}],"balance_after":24019,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":24019},"source":{"system":"sec-edgar","filing":"0000906107-26-000064","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000064/form4.xml","form_type":"4"}},{"id":682101,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Restricted Units","published_at":"2026-08-20T00:58:41.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":27021,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F4","text":"On August 17, 2026, the Reporting Person received a grant of restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\") the operating partnership of Vivmark Residential (the \"Company\"), in lieu of restricted shares of the Company."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RUs are scheduled to vest on August 17, 2029."}],"balance_after":27021,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":27021},"source":{"system":"sec-edgar","filing":"0000906107-26-000063","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000063/form4.xml","form_type":"4"}},{"id":682100,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:58:41.000Z","date":"2026-08-17","kind":"sale","planned":false,"acquired":false,"shares":7825,"price":64.31,"value":503225.75,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Vivmark Residential (formerly known as Equity Residential) scheduled to vest in the future."}],"balance_after":44713,"source":{"system":"sec-edgar","filing":"0000906107-26-000063","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000063/form4.xml","form_type":"4"}},{"id":682099,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:58:41.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":8836,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares scheduled to vest on August 17, 2029."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Vivmark Residential (formerly known as Equity Residential) scheduled to vest in the future."}],"balance_after":52538,"source":{"system":"sec-edgar","filing":"0000906107-26-000063","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000063/form4.xml","form_type":"4"}},{"id":682098,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21849,"kind":"person","name":"Schall Benjamin","position":1,"cik":"0001544531","reported_name":"Schall Benjamin","relationship":{"director":true,"officer":true,"officer_title":"President & CEO"}}],"security":"Restricted Units","published_at":"2026-08-20T00:56:38.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":50040,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F8","text":"On August 17, 2026, the Reporting Person received a grant of RUs in the OP in lieu of restricted shares of VMRK."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The RUs are scheduled to vest on August 17, 2029."}],"balance_after":50040,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":50040},"source":{"system":"sec-edgar","filing":"0000906107-26-000062","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000062/form4.xml","form_type":"4"}},{"id":682097,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21849,"kind":"person","name":"Schall Benjamin","position":1,"cik":"0001544531","reported_name":"Schall Benjamin","relationship":{"director":true,"officer":true,"officer_title":"President & CEO"}}],"security":"Restricted Units","published_at":"2026-08-20T00:56:38.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":78156,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The RUs are scheduled to vest on 1, 2029."}],"balance_after":78156,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":78156},"source":{"system":"sec-edgar","filing":"0000906107-26-000062","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000062/form4.xml","form_type":"4"}},{"id":682096,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21849,"kind":"person","name":"Schall Benjamin","position":1,"cik":"0001544531","reported_name":"Schall Benjamin","relationship":{"director":true,"officer":true,"officer_title":"President & CEO"}}],"security":"Restricted Units","published_at":"2026-08-20T00:56:38.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":30240,"price":0.5,"value":15120.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RUs are scheduled to vest on March 1, 2028. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":30240,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":30240},"source":{"system":"sec-edgar","filing":"0000906107-26-000062","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000062/form4.xml","form_type":"4"}},{"id":682095,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21849,"kind":"person","name":"Schall Benjamin","position":1,"cik":"0001544531","reported_name":"Schall Benjamin","relationship":{"director":true,"officer":true,"officer_title":"President & CEO"}}],"security":"Restricted Units","published_at":"2026-08-20T00:56:38.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":33569,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RUs are scheduled to vest on March 1, 2028. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":33569,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":33569},"source":{"system":"sec-edgar","filing":"0000906107-26-000062","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000062/form4.xml","form_type":"4"}},{"id":682094,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21849,"kind":"person","name":"Schall Benjamin","position":1,"cik":"0001544531","reported_name":"Schall Benjamin","relationship":{"director":true,"officer":true,"officer_title":"President & CEO"}}],"security":"Restricted Units","published_at":"2026-08-20T00:56:38.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":76606,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted unit award is subject to the same time-based vesting conditions that were previously applicable to the AVB Performance Award with respect to a number of limited partnership interests in the OP designated as restricted units (\"RUs\"), rounded to the nearest whole number of RUs, equal to the product of (i) the number of shares of AVB Common Stock subject to such AVB Performance Award, determined by deeming any performance-based vesting criteria applicable to such AVB Performance Award to be achieved based on the greater of target performance and the actual level of performance (which was calculated as of the latest practicable date prior to the Effective Time and certified by the Compensation Committee of the AVB board prior to the Effective Time) and (ii) 2.793."},{"field":"security","element":"securityTitle","label":"F2","text":"Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026 (the \"Merger Agreement\"), by and among AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), Vivmark Residential (f/k/a Equity Residential), a Maryland real estate investment trust  (\"VMRK\"), ERP Operating Limited Partnership, an Illinois limited partnership (the \"OP\"), and Canopy Merger Sub LLC, a Maryland limited liability company (\"Merger Sub\"), AVB and VMRK combined in a merger of equals on August 17, 2026, with AVB merging with and into Merger Sub, with Merger Sub surviving as a wholly owned subsidiary of VMRK (the \"Merger\").  Merger Sub subsequently merged with and into the OP, with the OP continuing as the surviving entity."},{"field":"security","element":"securityTitle","label":"F3","text":"Pursuant to the Merger Agreement, each award outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") with respect to shares of common stock, par value $0.01 per share (the \"AVB Common Stock\"), of AVB that vest on the basis of the achievement of applicable performance goals (each, an \"AVB Performance Award\") was converted into a restricted unit award, in lieu of VMRK restricted shares."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests (\"OP Units\") in the OP when the capital account related to the RUs 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 conditions, OP Units are exchangeable by the holder for common shares of VMRK on a one-for-one basis or cash value of such shares, at VMRK's option. The RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RUs are scheduled to vest on March 1, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":76606,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":76606},"source":{"system":"sec-edgar","filing":"0000906107-26-000062","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000062/form4.xml","form_type":"4"}},{"id":682093,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21848,"kind":"person","name":"Swanezy Susan","position":1,"cik":"0001684062","reported_name":"Swanezy Susan","relationship":{"director":true}}],"security":"Restricted Units","published_at":"2026-08-20T00:48:05.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2710,"price":0.5,"value":1355.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F2","text":"On August 17, 2026, the reporting person elected to receive a grant of Series 2026I restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), the operating partnership of Vivmark Residential (the \"Company\"), in connection with the Company's grant of long-term compensation for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RUs are scheduled to vest on August 17, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":2710,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":2710},"source":{"system":"sec-edgar","filing":"0000906107-26-000061","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000061/form4.xml","form_type":"4"}},{"id":682092,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21848,"kind":"person","name":"Swanezy Susan","position":1,"cik":"0001684062","reported_name":"Swanezy Susan","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:48:05.000Z","date":"2026-08-18","kind":"sale","planned":false,"acquired":false,"shares":15700,"price":63.8,"value":1001660.0,"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 $63.79 to $63.85.  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."}],"balance_after":28934,"source":{"system":"sec-edgar","filing":"0000906107-26-000061","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000061/form4.xml","form_type":"4"}},{"id":682091,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":16022,"kind":"person","name":"NAUGHTON TIMOTHY J","position":1,"cik":"0001219700","reported_name":"NAUGHTON TIMOTHY J","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:45:32.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2620,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares granted for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders, which are scheduled to vest on August 17, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Vivmark Residential scheduled to vest in the future."}],"balance_after":314301,"source":{"system":"sec-edgar","filing":"0000906107-26-000060","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000060/form4.xml","form_type":"4"}},{"id":682090,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21847,"kind":"person","name":"MUELLER CHARLES E JR","position":1,"cik":"0001195976","reported_name":"MUELLER CHARLES E JR","relationship":{"director":true}}],"security":"Restricted Units","published_at":"2026-08-20T00:42:55.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2710,"price":0.5,"value":1355.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F2","text":"On August 17, 2026, the reporting person elected to receive a grant of Series 2026I restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), the operating partnership of Vivmark Residential (the \"Company\"), in connection with the Company's grant of long-term compensation for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RUs are scheduled to vest on August 17, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":2710,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":2710},"source":{"system":"sec-edgar","filing":"0000906107-26-000059","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000059/form4.xml","form_type":"4"}},{"id":682089,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21847,"kind":"person","name":"MUELLER CHARLES E JR","position":1,"cik":"0001195976","reported_name":"MUELLER CHARLES E JR","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:42:55.000Z","date":"2026-08-18","kind":"sale","planned":false,"acquired":false,"shares":8000,"price":63.9,"value":511200.0,"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 $63.85 to $63.97.  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."}],"balance_after":16084,"source":{"system":"sec-edgar","filing":"0000906107-26-000059","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000059/form4.xml","form_type":"4"}},{"id":682088,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21846,"kind":"person","name":"Howard Christopher B.","position":1,"cik":"0001862706","reported_name":"Howard Christopher B.","relationship":{"director":true}}],"security":"Restricted Units","published_at":"2026-08-20T00:40:49.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2710,"price":0.5,"value":1355.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F2","text":"On August 17, 2026, the reporting person elected to receive a grant of Series 2026I restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), the operating partnership of Vivmark Residential (the \"Company\"), in connection with the Company's grant of long-term compensation for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RUs are scheduled to vest on August 17, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":2710,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":2710},"source":{"system":"sec-edgar","filing":"0000906107-26-000058","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000058/form4.xml","form_type":"4"}},{"id":682087,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21846,"kind":"person","name":"Howard Christopher B.","position":1,"cik":"0001862706","reported_name":"Howard Christopher B.","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:40:49.000Z","date":"2026-08-18","kind":"sale","planned":false,"acquired":false,"shares":8486,"price":64,"value":543104.0,"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 $64.00 to $64.04.  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."}],"balance_after":12730,"source":{"system":"sec-edgar","filing":"0000906107-26-000058","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000058/form4.xml","form_type":"4"}},{"id":682086,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21845,"kind":"person","name":"Flynn Conor C","position":1,"cik":"0001576790","reported_name":"Flynn Conor C","relationship":{"director":true}}],"security":"Restricted Units","published_at":"2026-08-20T00:38:24.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2710,"price":0.5,"value":1355.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On August 17, 2026, the reporting person elected to receive a grant of Series 2026I restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), the operating partnership of Vivmark Residential (the \"Company\"), in connection with the Company's grant of long-term compensation for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RUs are scheduled to vest on August 17, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":2710,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":2710},"source":{"system":"sec-edgar","filing":"0000906107-26-000057","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000057/form4.xml","form_type":"4"}},{"id":682085,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21844,"kind":"person","name":"Brown Terry S.","position":1,"cik":"0001627576","reported_name":"Brown Terry S.","relationship":{"director":true}}],"security":"Restricted Units","published_at":"2026-08-20T00:36:23.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2710,"price":0.5,"value":1355.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On August 17, 2026, the reporting person elected to receive a grant of Series 2026I restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), the operating partnership of Vivmark Residential (the \"Company\"), in connection with the Company's grant of long-term compensation for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RUs are scheduled to vest on August 17, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":2710,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":2710},"source":{"system":"sec-edgar","filing":"0000906107-26-000056","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000056/form4.xml","form_type":"4"}},{"id":682084,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true}}],"security":"Non-qualified Stock Option (Right to Buy)","published_at":"2026-08-20T00:34:43.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":18559,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents share options granted for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders."}],"balance_after":18559,"derivative":{"exercise_price":63.66,"exercise_date":"2027-08-17","expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":18559},"source":{"system":"sec-edgar","filing":"0000906107-26-000055","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000055/form4.xml","form_type":"4"}},{"id":682083,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21842,"kind":"person","name":"Jones Nina P","position":1,"cik":"0002007895","reported_name":"Jones Nina P","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:32:22.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2620,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares granted for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders, which are scheduled to vest on August 17, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Vivmark Residential (formerly known as Equity Residential) scheduled to vest in the future."}],"balance_after":3404,"source":{"system":"sec-edgar","filing":"0000906107-26-000053","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000053/form4.xml","form_type":"4"}},{"id":682082,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21841,"kind":"person","name":"Hoff Ann","position":1,"cik":"0002012803","reported_name":"Hoff Ann","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:30:36.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2620,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares granted for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders, which are scheduled to vest on August 17, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Vivmark Residential (formerly known as Equity Residential) scheduled to vest in the future."}],"balance_after":6330,"source":{"system":"sec-edgar","filing":"0000906107-26-000052","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000052/form4.xml","form_type":"4"}},{"id":682081,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21840,"kind":"person","name":"HABEN MARY KAY","position":1,"cik":"0001190910","reported_name":"HABEN MARY KAY","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:28:50.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2620,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares granted for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders, which are scheduled to vest on August 17, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Vivmark Residential (formerly known as Equity Residential) scheduled to vest in the future."}],"balance_after":9477,"source":{"system":"sec-edgar","filing":"0000906107-26-000051","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000051/form4.xml","form_type":"4"}},{"id":682080,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21839,"kind":"person","name":"Carr Chris","position":1,"cik":"0001821096","reported_name":"Carr Chris","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:27:01.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2620,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares granted for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders, which are scheduled to vest on August 17, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Vivmark Residential scheduled to vest in the future."}],"balance_after":5591,"source":{"system":"sec-edgar","filing":"0000906107-26-000050","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000050/form4.xml","form_type":"4"}},{"id":682079,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21838,"kind":"person","name":"Aman Angela M","position":1,"cik":"0001538554","reported_name":"Aman Angela M","relationship":{"director":true}}],"security":"Restricted Units","published_at":"2026-08-20T00:24:27.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2710,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On August 17, 2026, the reporting person elected to receive a grant of Series 2026I restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), the operating partnership of Vivmark Residential (the \"Company\"), in connection with the Company's grant of long-term compensation for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RUs are scheduled to vest on August 17, 2027. In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until August 17, 2028."}],"balance_after":2710,"derivative":{"expiration_date":"2036-08-17","underlying":"Common Shares Of Beneficial Interest","underlying_shares":2710},"source":{"system":"sec-edgar","filing":"0000906107-26-000049","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000049/form4.xml","form_type":"4"}},{"id":682078,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21837,"kind":"person","name":"STERRETT STEPHEN E","position":1,"cik":"0001235739","reported_name":"STERRETT STEPHEN E","relationship":{"director":true,"other":true,"other_text":"Chairman of the Board"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-20T00:22:45.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":2620,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares granted for prospective service from August 17, 2026 to the 2027 Annual Meeting of Shareholders, which are scheduled to vest on August 17, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Vivmark Residential (formerly known as Equity Residential)scheduled to vest in the future."}],"balance_after":20773,"source":{"system":"sec-edgar","filing":"0000906107-26-000048","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000048/form4.xml","form_type":"4"}},{"id":684488,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":22523,"kind":"person","name":"Kaufman Ian","position":1,"cik":"0001381170","reported_name":"Kaufman Ian","relationship":{"officer":true,"officer_title":"Chief Accounting Officer"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-08-18T21:05:14.000Z","date":"2026-08-14","kind":"grant","planned":false,"acquired":true,"shares":30,"price":56.07,"value":1682.1,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares acquired through Vivmark Residential's (formerly known as Equity Residential) (the \"Company\") 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":29657,"source":{"system":"sec-edgar","filing":"0000906107-26-000033","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000033/form4.xml","form_type":"4"}},{"id":729692,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21837,"kind":"person","name":"STERRETT STEPHEN E","position":1,"cik":"0001235739","reported_name":"STERRETT STEPHEN E","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-06-23T20:35:58.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":3276,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares granted for prospective service from the 2026 Annual Meeting of Shareholders, which are scheduled to vest on June 18, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential scheduled to vest in the future."}],"balance_after":24551,"source":{"system":"sec-edgar","filing":"0000906107-26-000029","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000029/form4.xml","form_type":"4"}},{"id":729690,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21575,"kind":"person","name":"SHAPIRO MARK S","position":1,"cik":"0001345978","reported_name":"SHAPIRO MARK S","relationship":{"director":true}}],"security":"Restricted Units","published_at":"2026-06-23T20:33:07.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":3561,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On June 18, 2026, the reporting person elected to receive a grant of Series 2026C restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), the OP of Equity Residential (the \"Company\"), in connection with the Company's annual grant of long-term compensation for prospective service from the 2026 Annual Meeting of Shareholders."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RUs are scheduled to vest on June 18, 2027.  In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until June 18, 2028."}],"balance_after":3561,"derivative":{"expiration_date":"2036-06-18","underlying":"Common Shares Of Beneficial Interest","underlying_shares":3561},"source":{"system":"sec-edgar","filing":"0000906107-26-000028","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000028/form4.xml","form_type":"4"}},{"id":729689,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true,"other":true,"other_text":"Chairman of the Board"}}],"security":"Non-qualified Stock Option (Right to Buy)","published_at":"2026-06-23T20:29:41.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":23281,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents share options granted for prospective service from the 2026 Annual Meeting of Shareholders."}],"balance_after":23281,"derivative":{"exercise_price":64.09,"exercise_date":"2027-06-18","expiration_date":"2036-06-18","underlying":"Common Shares Of Beneficial Interest","underlying_shares":23281},"source":{"system":"sec-edgar","filing":"0000906107-26-000027","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000027/form4.xml","form_type":"4"}},{"id":729688,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21843,"kind":"person","name":"NEITHERCUT DAVID J","position":1,"cik":"0001219726","reported_name":"NEITHERCUT DAVID J","relationship":{"director":true,"other":true,"other_text":"Chairman of the Board"}}],"security":"Non-qualified Stock Option (Right to Buy)","published_at":"2026-06-23T20:29:41.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":27716,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents share options granted for prospective service from the 2026 Annual Meeting of Shareholders."}],"balance_after":27716,"derivative":{"exercise_price":64.09,"exercise_date":"2027-06-18","expiration_date":"2036-06-18","underlying":"Common Shares Of Beneficial Interest","underlying_shares":27716},"source":{"system":"sec-edgar","filing":"0000906107-26-000027","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000027/form4.xml","form_type":"4"}},{"id":729687,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21842,"kind":"person","name":"Jones Nina P","position":1,"cik":"0002007895","reported_name":"Jones Nina P","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-06-23T20:26:42.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":3276,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares granted for prospective service from the 2026 Annual Meeting of Shareholders, which are scheduled to vest on June 18, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential scheduled to vest in the future."}],"balance_after":7182,"source":{"system":"sec-edgar","filing":"0000906107-26-000026","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000026/form4.xml","form_type":"4"}},{"id":729686,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":36123,"kind":"person","name":"Huque Tahsinul Zia","position":1,"cik":"0001794630","reported_name":"Huque Tahsinul Zia","relationship":{"director":true}}],"security":"Restricted Units","published_at":"2026-06-23T20:24:08.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":3561,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On June 18, 2026, the reporting person elected to receive a grant of Series 2026C restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), the OP of Equity Residential (the \"Company\"), in connection with the Company's annual grant of long-term compensation for prospective service from the 2026 Annual Meeting of Shareholders."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RUs are scheduled to vest on June 18, 2027.  In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until June 18, 2028."}],"balance_after":3561,"derivative":{"expiration_date":"2036-06-18","underlying":"Common Shares Of Beneficial Interest","underlying_shares":3561},"source":{"system":"sec-edgar","filing":"0000906107-26-000025","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000025/form4.xml","form_type":"4"}},{"id":729685,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21841,"kind":"person","name":"Hoff Ann","position":1,"cik":"0002012803","reported_name":"Hoff Ann","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-06-23T20:22:05.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":3276,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares granted for prospective service from the 2026 Annual Meeting of Shareholders, which are scheduled to vest on June 18, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential scheduled to vest in the future."}],"balance_after":6986,"source":{"system":"sec-edgar","filing":"0000906107-26-000024","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000024/form4.xml","form_type":"4"}},{"id":729684,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21840,"kind":"person","name":"HABEN MARY KAY","position":1,"cik":"0001190910","reported_name":"HABEN MARY KAY","relationship":{"director":true}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-06-23T20:19:43.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":3276,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares granted for prospective service from the 2026 Annual Meeting of Shareholders, which are scheduled to vest on June 18, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential scheduled to vest in the future."}],"balance_after":13255,"source":{"system":"sec-edgar","filing":"0000906107-26-000023","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000023/form4.xml","form_type":"4"}},{"id":729683,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21839,"kind":"person","name":"Carr Chris","position":1,"cik":"0001821096","reported_name":"Carr Chris","relationship":{"director":true}}],"security":"Restricted Units","published_at":"2026-06-23T20:17:26.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":3561,"price":0.5,"value":1780.5,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On June 18, 2026, the reporting person elected to receive a grant of Series 2026C restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), the OP of Equity Residential (the \"Company\"), in connection with the Company's annual grant of long-term compensation for prospective service from the 2026 Annual Meeting of Shareholders."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RUs are scheduled to vest on June 18, 2027.  In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until June 18, 2028."}],"balance_after":3561,"derivative":{"expiration_date":"2036-06-18","underlying":"Common Shares Of Beneficial Interest","underlying_shares":3561},"source":{"system":"sec-edgar","filing":"0000906107-26-000022","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000022/form4.xml","form_type":"4"}},{"id":729682,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":21838,"kind":"person","name":"Aman Angela M","position":1,"cik":"0001538554","reported_name":"Aman Angela M","relationship":{"director":true}}],"security":"Restricted Units","published_at":"2026-06-23T20:15:19.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":3561,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On June 18, 2026, the reporting person elected to receive a grant of Series 2026C restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), the OP of Equity Residential (the \"Company\"), in connection with the Company's annual grant of long-term compensation for prospective service from the 2026 Annual Meeting of Shareholders."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RUs are scheduled to vest on June 18, 2027.  In addition, the RUs (including any OP Units into which they may automatically convert) are subject to a holding restriction until June 18, 2028."}],"balance_after":3561,"derivative":{"expiration_date":"2036-06-18","underlying":"Common Shares Of Beneficial Interest","underlying_shares":3561},"source":{"system":"sec-edgar","filing":"0000906107-26-000021","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000021/form4.xml","form_type":"4"}},{"id":775887,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":22523,"kind":"person","name":"Kaufman Ian","position":1,"cik":"0001381170","reported_name":"Kaufman Ian","relationship":{"officer":true,"officer_title":"Chief Accounting Officer"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-05-18T20:20:23.000Z","date":"2026-05-14","kind":"grant","planned":false,"acquired":true,"shares":32,"price":53.31,"value":1705.92,"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 Equity Residential scheduled to vest in the future."}],"balance_after":29626,"source":{"system":"sec-edgar","filing":"0000906107-26-000019","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000019/form4.xml","form_type":"4"}},{"id":863309,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":22523,"kind":"person","name":"Kaufman Ian","position":1,"cik":"0001381170","reported_name":"Kaufman Ian","relationship":{"officer":true,"officer_title":"Chief Accounting Officer"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-03-04T21:15:46.000Z","date":"2026-03-02","kind":"grant","planned":false,"acquired":true,"shares":150,"price":52.65,"value":7897.5,"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 Equity Residential scheduled to vest in the future."}],"balance_after":29594,"source":{"system":"sec-edgar","filing":"0000906107-26-000017","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000017/form4.xml","form_type":"4"}},{"id":894534,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-02-19T21:22:46.000Z","date":"2026-02-18","kind":"sale","planned":false,"acquired":false,"shares":2429,"price":63.56,"value":154387.24,"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":43702,"source":{"system":"sec-edgar","filing":"0000906107-26-000016","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000016/form4.xml","form_type":"4"}},{"id":894533,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":22523,"kind":"person","name":"Kaufman Ian","position":1,"cik":"0001381170","reported_name":"Kaufman Ian","relationship":{"officer":true,"officer_title":"Chief Accounting Officer"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-02-19T21:19:03.000Z","date":"2026-02-18","kind":"sale","planned":false,"acquired":false,"shares":909,"price":63.56,"value":57776.04,"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":29444,"source":{"system":"sec-edgar","filing":"0000906107-26-000015","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000015/form4.xml","form_type":"4"}},{"id":894532,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":65755,"kind":"person","name":"Carraway Catherine","position":1,"cik":"0001841519","reported_name":"Carraway Catherine","relationship":{"officer":true,"officer_title":"EVP & CHRO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-02-19T21:15:02.000Z","date":"2026-02-18","kind":"sale","planned":false,"acquired":false,"shares":749,"price":63.56,"value":47606.44,"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":15901,"source":{"system":"sec-edgar","filing":"0000906107-26-000014","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000014/form4.xml","form_type":"4"}},{"id":910643,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":25582,"kind":"person","name":"Parrell Mark J.","position":1,"cik":"0001414146","reported_name":"Parrell Mark J.","relationship":{"director":true,"officer":true,"officer_title":"President & CEO"}}],"security":"Non-qualified Stock Option (Right to Buy)","published_at":"2026-02-11T21:42:49.000Z","date":"2026-02-09","kind":"grant","planned":false,"acquired":true,"shares":144350,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents share options scheduled to vest in approximately three equal installments on February 9, 2027, February 9, 2028 and February 9, 2029."}],"balance_after":144350,"derivative":{"exercise_price":64.67,"expiration_date":"2036-02-09","underlying":"Common Shares Of Beneficial Interest","underlying_shares":144350},"source":{"system":"sec-edgar","filing":"0000906107-26-000013","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000013/form4.xml","form_type":"4"}},{"id":910642,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":25582,"kind":"person","name":"Parrell Mark J.","position":1,"cik":"0001414146","reported_name":"Parrell Mark J.","relationship":{"director":true,"officer":true,"officer_title":"President & CEO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-02-11T21:42:49.000Z","date":"2026-02-09","kind":"grant","planned":false,"acquired":true,"shares":19909,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares scheduled to vest on February 9, 2029."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential scheduled to vest in the future."}],"balance_after":41889,"source":{"system":"sec-edgar","filing":"0000906107-26-000013","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000013/form4.xml","form_type":"4"}},{"id":910641,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":66934,"kind":"person","name":"McLeod Bret","position":1,"cik":"0002081307","reported_name":"McLeod Bret","relationship":{"officer":true,"officer_title":"EVP & Chief Financial Officer"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-02-11T21:40:06.000Z","date":"2026-02-09","kind":"grant","planned":false,"acquired":true,"shares":6840,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares scheduled to vest on February 9, 2029."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential scheduled to vest in the future."}],"balance_after":26404,"source":{"system":"sec-edgar","filing":"0000906107-26-000012","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000012/form4.xml","form_type":"4"}},{"id":910640,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Restricted Units","published_at":"2026-02-11T21:31:52.000Z","date":"2026-02-09","kind":"grant","planned":false,"acquired":true,"shares":6416,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F6","text":"On February 9, 2026, the reporting person received a grant of Series 2026B restricted limited partnership interests (\"RUs\") in ERP Operating Limited Partnership (the \"OP\"), 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."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"RUs are a class of partnership interest that automatically convert into an equal number of limited partnership interests of the OP (\"OP Units\") when the capital account related to the RUs 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 RUs reflected in this report also include any OP Units into which such RUs automatically convert."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"The Restricted Units are scheduled to vest on February 9, 2029."}],"balance_after":6416,"derivative":{"expiration_date":"2036-02-09","underlying":"Common Shares Of Beneficial Interest","underlying_shares":6416},"source":{"system":"sec-edgar","filing":"0000906107-26-000010","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000010/form4.xml","form_type":"4"}},{"id":910639,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Non-qualified Stock Option (Right to Buy)","published_at":"2026-02-11T21:31:52.000Z","date":"2026-02-09","kind":"grant","planned":false,"acquired":true,"shares":43542,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents share options scheduled to vest in three equal installments on February 9, 2027, February 9, 2028 and February 9, 2029."}],"balance_after":43542,"derivative":{"exercise_price":64.67,"expiration_date":"2036-02-09","underlying":"Common Shares Of Beneficial Interest","underlying_shares":43542},"source":{"system":"sec-edgar","filing":"0000906107-26-000010","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000010/form4.xml","form_type":"4"}},{"id":910638,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-02-11T21:31:52.000Z","date":"2026-02-10","kind":"sale","planned":false,"acquired":false,"shares":5765,"price":65.13,"value":375474.45,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","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":46131,"source":{"system":"sec-edgar","filing":"0000906107-26-000010","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000010/form4.xml","form_type":"4"}},{"id":910637,"issuer":{"id":499,"kind":"organization","name":"VIVMARK RESIDENTIAL","symbol":"VMRK"},"owners":[{"id":560,"kind":"person","name":"Manelis Michael L","position":1,"cik":"0001691784","reported_name":"Manelis Michael L","relationship":{"officer":true,"officer_title":"Executive Vice President & COO"}}],"security":"Common Shares Of Beneficial Interest","published_at":"2026-02-11T21:31:52.000Z","date":"2026-02-09","kind":"grant","planned":false,"acquired":true,"shares":12010,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted shares scheduled to vest on February 9, 2029."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Direct total includes restricted shares of Equity Residential scheduled to vest in the future."}],"balance_after":51896,"source":{"system":"sec-edgar","filing":"0000906107-26-000010","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/906107/000090610726000010/form4.xml","form_type":"4"}}],"next_cursor":"2026-02-11T21:31:52.000000Z,910637"}