SEC Form 3 · accession 0000906107-26-000045

VIVMARK RESIDENTIAL · VMRK

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Alaine Susan Walsh

Officer — EVP, Human Capital & Admin

Period of report

Aug 17, 2026

Accepted (ET)

Aug 18, 2026 · 9:29 pm EDT

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0000906107

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Shares Of Beneficial Interest^F1,F2,F3	holding	—	—		—	26,335	D

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Non-qualified Stock Option (Right to Buy)^F4	$64.57	holding	—	—	—	Mar 1, 2023	Feb 25, 2031	Common Shares Of Beneficial Interest	6,826	—	D

Explanation of responses

F1Pursuant 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 "Operating Partnership"), 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 Operating Partnership, with the Operating Partnership continuing as the surviving entity.
F2At the effective time of the Merger (the "Effective Time"), each issued and outstanding share of common stock, par value $0.01 per share (the "AVB Common Stock"), of AVB held by the Reporting Person was automatically converted into the right to receive 2.793 (the "Exchange Ratio") common shares of beneficial interest, $0.01 par value per share ("VMRK Common Shares"), of VMRK, plus the right to receive cash in lieu of fractional VMRK Common Shares, if any, into which such AVB Common Stock would have been converted.
F3Total reflects the Reporting Person's shares of AVB Common Stock that were converted into VMRK Common Shares pursuant to the Merger and includes restricted shares of VMRK scheduled to vest in the future.
F4Pursuant to the Merger Agreement, effective as of the Effective Time, the Reporting Person's options to acquire AVB Common Stock that were outstanding at the Effective Time were converted into the right to receive options to acquire VMRK Common Shares, where the number of VMRK Common Shares subject to such converted option is equal to (i) the number of shares of AVB Common Stock subject to the corresponding AVB option award immediately prior to the Effective Time multiplied by (ii) the Exchange Ratio (rounded down to the nearest whole number of shares), and the exercise price of each converted option award is equal to (A) the exercise price of the corresponding AVB option award immediately prior to the Effective Time divided by (B) the Exchange Ratio (rounded up to the nearest whole cent).