{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-149320","form_type":"8-K","ticker":"EXR","cik":"0001289490","company_name":"Extra Space Storage Inc.","filed_at":"2023-05-19T23:59:59+00:00","discovered_at":"2026-05-14T18:03:38.286722+00:00","generated_at":"2026-06-14T19:33:04.069157+00:00","sec_items":["1.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Extra Space and Life Storage amend merger agreement to modify minority LP election and restricted stock consideration","bullets":["Minority Limited Partners lose right to elect EXR common stock in lieu of EXR OP units; may still redeem OP units before closing.","Preferred unitholder election removed because all Series A Preferred Units have been converted to common units.","Top-up cash for Life Storage restricted stock replaced with top-up grants of Life Storage performance stock units.","Amendment dated May 18, 2023; Merger Agreement originally signed April 2, 2023.","Overall merger consideration for common stockholders unchanged; closing conditions unaffected."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-149320","json":"https://secwatch.observer/filing/0001193125-23-149320.json","markdown":"https://secwatch.observer/filing/0001193125-23-149320.md","text":"https://secwatch.observer/filing/0001193125-23-149320.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1289490/000119312523149320/0001193125-23-149320-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1289490/000119312523149320/d486997d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-14T19:33:04.069157+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"78fdb3feb57ba358638f37355aaa9913a2fe2b75","claim":"Extra Space Storage Inc. amended Merger Agreement Amendment with Life Storage, Inc. and Life Storage LP (effective 2023-05-18).","evidence_excerpt":"On May 18, 2023, the Extra Space Parties and the Life Storage Parties entered into an Amendment to Agreement and Plan of Merger (the “Merger Agreement Amendment”)","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1289490/000119312523149320/0001193125-23-149320-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"amendment"},{"label":"Agreement","value":"merger"},{"label":"Counterparty","value":"Life Storage, Inc. and Life Storage LP"},{"label":"Effective","value":"2023-05-18"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}