FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person *
O'Shea Kevin P.
(Last) (First) (Middle)
4040 WILSON BLVD., SUITE 1000
(Street)
ARLINGTON VA 22203
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
VIVMARK RESIDENTIAL [ VMRK ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Executive Vice President & CFO
3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Units (1) (2) (3) (4) 08/17/2026   A   23,341     (5) 08/17/2036 Common Shares Of Beneficial Interest 23,341 $ 0 23,341 D  
Restricted Units (1) (2) (3) (4) 08/17/2026   A   10,639     (6) 08/17/2036 Common Shares Of Beneficial Interest 10,639 $ 0 10,639 D  
Restricted Units (1) (2) (3) (4) 08/17/2026   A   9,586     (6) 08/17/2036 Common Shares Of Beneficial Interest 9,586 $ 0.5 9,586 D  
Restricted Units (1) (2) (3) (4) 08/17/2026   A   24,771     (7) 08/17/2036 Common Shares Of Beneficial Interest 24,771 $ 0 24,771 D  
Restricted Units (8) (4) 08/17/2026   A   28,522     (9) 08/17/2036 Common Shares Of Beneficial Interest 28,522 $ 0 28,522 D  
Explanation of Responses:
1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. The RUs are scheduled to vest on March 1, 2029.
8. On August 17, 2026, the Reporting Person received a grant of RUs in the OP in lieu of restricted shares of VMRK.
9. The RUs are scheduled to vest on August 17, 2029.
/s/ Samantha Thompson, Attorney-in-fact 08/19/2026
** Signature of Reporting Person Date
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