{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-26-033850","form_type":"8-K","ticker":"WAL","cik":"0001212545","company_name":"WESTERN ALLIANCE BANCORPORATION","filed_at":"2026-05-12T10:45:33+00:00","discovered_at":"2026-05-12T10:50:00.272604+00:00","generated_at":"2026-05-12T10:50:43.163388+00:00","sec_items":["7.01","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"confidence":"low","headline":"Western Alliance Bancorporation holds Investor Day; no financial details provided","bullets":["Investor Day held May 12, 2026, in New York, NY, with live webcast and replay.","Presentation (Exhibit 99.1) referenced but not included in filing text; specific data unavailable.","No earnings, guidance, or material financial metrics disclosed in the filing.","Ticker: WAL; event type is investor presentation, not a financial release."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-26-033850","json":"https://secwatch.observer/filing/0001628280-26-033850.json","markdown":"https://secwatch.observer/filing/0001628280-26-033850.md","text":"https://secwatch.observer/filing/0001628280-26-033850.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1212545/000162828026033850/0001628280-26-033850-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1212545/000162828026033850/wal-20260512.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-12T10:50:43.163388+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}