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In connection with the Merger, EQR changed its name to Vivmark Residential."},{"field":"kind","element":"transactionCoding","label":"F3","text":"At the effective time of the Merger (the \"Effective Time\"), each issued and outstanding share of AVB Common Stock 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 (\"EQR Common Shares\"), of EQR, plus the right to receive cash in lieu of fractional EQR Common Shares, if any, into which such AVB Common Stock would have been converted. On August 14, 2026, the closing price of AVB Common Stock was $184.06 per share and the closing price of EQR Common Shares was $65.97 per share."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001193125-26-354209","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/915912/000119312526354209/ownership.xml","form_type":"4"}},{"id":686076,"issuer":{"id":23068,"kind":"organization","name":"AVALONBAY COMMUNITIES INC","symbol":"AVB"},"owners":[{"id":20560,"kind":"person","name":"Willson Sean Thomas","position":1,"cik":"0002048274","reported_name":"Willson Sean Thomas","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior Vice President"}}],"security":"Common Stock, par value $.01 per share","published_at":"2026-08-17T20:47:15.000Z","date":"2026-08-17","kind":"grant","planned":false,"acquired":true,"shares":1430,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the deemed acquisition of common stock, par value $0.01 per share (\"AVB Common Stock\"), of AvalonBay Communities, Inc., a Maryland corporation (\"AVB\"), pursuant to restricted stock units that were subject to performance-based vesting conditions (each, a \"PSU\"), which were previously granted to the Reporting Person. 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