Equity Residential (EQR)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-31 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: VIVMARK RESIDENTIAL (VMRK) CIK: 0000906107 --- Reporting Owner --- Name: Manelis Michael L CIK: 0001691784 Role: Officer (Executive Vice President & COO) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Shares Of Beneficial Interest Date: 2026-08-31 | Code: A (Grant or award) Shares: +10,536 | Price: $0.00 Shares Owned After: 55,249 | Ownership: D (Direct) Footnotes: [F1] 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. [F2] Direct total includes restricted shares of the Company scheduled to vest in the future. [Transaction #2] Security: Common Shares Of Beneficial Interest Date: 2026-08-31 | Code: A (Grant or award) Shares: +10,820 | Price: $0.00 Shares Owned After: 66,069 | Ownership: D (Direct) Footnotes: [F3] 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. [F2] Direct total includes restricted shares of the Company scheduled to vest in the future. [Transaction #3] Security: Common Shares Of Beneficial Interest Date: 2026-08-31 | Code: A (Grant or award) Shares: +13,201 | Price: $0.00 Shares Owned After: 79,270 | Ownership: D (Direct) Footnotes: [F4] 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. [F2] Direct total includes restricted shares of the Company scheduled to vest in the future. --- Derivative Transactions --- [Transaction #1] Security: Restricted Units Date: 2026-08-31 | Code: A (Grant or award) Shares: +11,055 | Price: $0.00 Exercisable: N/A | Expires: 2034-01-01 Shares Owned After: 11,055 | Ownership: D (Direct) Footnotes: [F6] 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. [F7] 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. [F8] The RUs are scheduled to vest on January 4, 2027. [Transaction #2] Security: Restricted Units Date: 2026-08-31 | Code: A (Grant or award) Shares: +11,310 | Price: $0.00 Exercisable: N/A | Expires: 2035-01-01 Shares Owned After: 11,310 | Ownership: D (Direct) Footnotes: [F9] Represents RUs in the Operating Partnership retained in connection with the settlement of an award under the Company's 2025 Long-Term Incentive Plan. [F7] 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. [F10] The RUs are scheduled to vest on January 3, 2028. [Transaction #3] Security: Restricted Units Date: 2026-08-31 | Code: A (Grant or award) Shares: +13,805 | Price: $0.00 Exercisable: N/A | Expires: 2036-01-01 Shares Owned After: 13,805 | Ownership: D (Direct) Footnotes: [F11] Represents RUs in the Operating Partnership retained in connection with the settlement of an award under the Company's 2026 Long-Term Incentive Plan. [F7] 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. [F12] The RUs are scheduled to vest on January 2, 2029. --- Holdings --- [Holding #1] Security: Common Shares Of Beneficial Interest Ownership: I (Indirect) Footnotes: [F5] Represents shares owned by Principal Trust Company, as Trustee of the Equity Residential Supplemental Executive Retirement Plan (the "SERP"), for the benefit of the reporting person. --- Footnotes (Complete Index) --- F1: 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. F10: The RUs are scheduled to vest on January 3, 2028. F11: Represents RUs in the Operating Partnership retained in connection with the settlement of an award under the Company's 2026 Long-Term Incentive Plan. F12: The RUs are scheduled to vest on January 2, 2029. F2: Direct total includes restricted shares of the Company scheduled to vest in the future. F3: 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. F4: 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. F5: Represents shares owned by Principal Trust Company, as Trustee of the Equity Residential Supplemental Executive Retirement Plan (the "SERP"), for the benefit of the reporting person. F6: 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. F7: 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. F8: The RUs are scheduled to vest on January 4, 2027. F9: Represents RUs in the Operating Partnership retained in connection with the settlement of an award under the Company's 2025 Long-Term Incentive Plan. --- Signature --- /s/ /s/ Samantha Thompson, Attorney-in-fact (2026-09-02)