Sell4

VIVMARK RESIDENTIAL

VMRK

Total Value

$511.2K

Net $511.2K sold

Filing Date

Aug 19, 2026

1 transaction

Sales

$511.2K

1 transaction

Trade Summary

On Aug 17, 2026 through Aug 18, 2026, MUELLER CHARLES E JR, Director, sold $511.2K of VIVMARK RESIDENTIAL (VMRK) across 1 transaction. The filing covers Common Shares Of Beneficial Interest and reflects net selling of $511.2K. Reported prices ranged from $63.90. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.

Price at the Time of the Trade

VMRK daily price with the insider's sale marked at $63.90.

Sold in the lower half of the 6-month range · the stock trades 3% higher today.

Price data is delayed and provided for context only — not investment advice.

Insider Information

Name: MUELLER CHARLES E JR
Role: Director
Location: ARLINGTON, VA

Filing Details

Filing Date: Aug 19, 2026
Transaction Date: Aug 17, 2026
Accession Number: 0000906107-26-000059
Form Type: 4
Net Trading Amount: -$511.2K

Non-Derivative Transactions

Date	Security	Shares	Price	Type	Value
Aug 18, 2026	Common Shares Of Beneficial Interest	8,000	$63.90	Sale	$511.2K

Derivative Transactions

Date	Security	Shares	Exercise Price	Type	Value
Aug 17, 2026	VMRK derivative	2,710	—	Grant/Award	—

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Footnotes

(F1)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.
(F2)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.
(F3)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.
(F4)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.

SEC Form 4

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

MUELLER CHARLES E JR

(Last)

(First)

(Middle)

4040 WILSON BLVD., SUITE 1000

(Street)

ARLINGTON

22027

(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)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Shares Of Beneficial Interest	08/18/2026		S		8,000	D	$63.9⁽¹⁾	16,084	D

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Units⁽²⁾	⁽³⁾	08/17/2026		A		2,710		⁽⁴⁾	08/17/2036	Common Shares Of Beneficial Interest	2,710	$0.5	2,710	D

Explanation of Responses:

1. 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.

2. 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.

3. 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.

4. 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.

	/s/ Samantha Thompson, Attorney-in-fact	08/19/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Form 4 as rendered by the SEC from accession 0000906107-26-000059.

VIVMARK RESIDENTIAL

Trade Summary

Price at the Time of the Trade

Company Information

Insider Information

Filing Details

Non-Derivative Transactions

Derivative Transactions

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Footnotes

SEC Form 4

SEC Filing

Price at the Time of the Trade

SEC Form 4