{"filing":{"accession_number":"0001140361-26-030523","cik":"0000906107","ticker":"EQR","company_name":"EQUITY RESIDENTIAL","form":"8-K","filing_date":"2026-07-31","report_date":"2026-07-31","primary_document":"ef20079196_8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/906107/000114036126030523/ef20079196_8k.htm"},"events":[{"id":22479,"run_id":20334,"accession_number":"0001140361-26-030523","anchor_item_number":"8.01","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"summary":"This Item 8.01 disclosure concerns the Equity Residential–AvalonBay merger, an all-stock merger-of-equals transaction announced May 20, 2026, with the combined company to operate as Vivmark Residential. The filing updates shareholders on the merger's progress (S-4 registration statement declared effective July 13, 2026), shareholder litigation arising from alleged disclosure deficiencies in the proxy statement, and supplemental financial analyses and merger background information. Although styled as \"Other Events,\" the core disclosure is the material acquisition activity and its status, making ma_activity the appropriate classification.","company_name":"EQUITY RESIDENTIAL","ticker":"EQR","filing_date":"2026-07-31","form":"8-K","submitted_at":null,"items":[{"id":22433,"accession_number":"0001140361-26-030523","item_number":"8.01","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"reasoning":"This Item 8.01 disclosure concerns the Equity Residential–AvalonBay merger, an all-stock merger-of-equals transaction announced May 20, 2026, with the combined company to operate as Vivmark Residential. The filing updates shareholders on the merger's progress (S-4 registration statement declared effective July 13, 2026), shareholder litigation arising from alleged disclosure deficiencies in the proxy statement, and supplemental financial analyses and merger background information. Although styled as \"Other Events,\" the core disclosure is the material acquisition activity and its status, making ma_activity the appropriate classification.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-01T00:26:20.978622+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":22433,"accession_number":"0001140361-26-030523","item_number":"8.01","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"reasoning":"This Item 8.01 disclosure concerns the Equity Residential–AvalonBay merger, an all-stock merger-of-equals transaction announced May 20, 2026, with the combined company to operate as Vivmark Residential. The filing updates shareholders on the merger's progress (S-4 registration statement declared effective July 13, 2026), shareholder litigation arising from alleged disclosure deficiencies in the proxy statement, and supplemental financial analyses and merger background information. Although styled as \"Other Events,\" the core disclosure is the material acquisition activity and its status, making ma_activity the appropriate classification.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-01T00:26:20.978622+00:00","company_name":"EQUITY RESIDENTIAL","ticker":"EQR","filing_date":"2026-07-31"}]}