X0607 3 2026-08-17 0 0000906107 VIVMARK RESIDENTIAL VMRK 0001627576 Brown Terry S. false 4040 WILSON BLVD., SUITE 1000 ARLINGTON VA 22203 1 Common Shares Of Beneficial Interest 58247 D Pursuant to the Agreement and Plan of Merger, dated as of May 20, 2026, 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. At the effective time of the Merger, each issued and outstanding share of common stock, par value $0.01 per share (the "AVB Common Stock"), of AVB and deferred stock unit 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, in the case of AVB Common Stock, the right to receive cash in lieu of fractional VMRK Common Shares, if any, into which such AVB Common Stock would have been converted. Total reflects the Reporting Person's shares of AVB Common Stock and deferred stock units that were converted into VMRK Common Shares pursuant to the Merger. /s/ Samantha Thompson, Attorney-in-fact 2026-08-18