{"schema_version":"secwatch.filing_event.v1","accession":"0001212545-23-000109","form_type":"8-K","ticker":"WAL","cik":"0001212545","company_name":"WESTERN ALLIANCE BANCORPORATION","filed_at":"2023-04-05T23:59:59+00:00","discovered_at":"2026-05-14T18:03:38.176136+00:00","generated_at":"2026-06-17T05:42:40.398333+00:00","sec_items":["2.02","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Western Alliance: insured deposits 68% of total, liquidity >140% of uninsured, unrealized losses improve","bullets":["Total insured deposits (including collateralized/pass-through) represent ~68% of total deposits, significantly higher than year-end.","Immediately available liquidity exceeds uninsured deposits with coverage ratio >140%; no borrowings from Fed discount window.","CET1 ratio expected materially consistent with year-end 2022.","Gross unrealized losses improved: HTM securities $139M (down from $177M), AFS $789M (down from $881M), HFI loans $2.9B (down from $4.2B).","Unrealized gains on debt/borrowings $431M (up from $121M), partially offsetting losses."],"urls":{"canonical":"https://secwatch.observer/filing/0001212545-23-000109","json":"https://secwatch.observer/filing/0001212545-23-000109.json","markdown":"https://secwatch.observer/filing/0001212545-23-000109.md","text":"https://secwatch.observer/filing/0001212545-23-000109.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1212545/000121254523000109/0001212545-23-000109-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1212545/000121254523000109/wal-20230404.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-17T05:42:40.398333+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":"db339e501783dbf3a28b7959881247540f280d6f","claim":"WESTERN ALLIANCE BANCORPORATION reported financial results for first quarter 2023.","evidence_excerpt":"Western Alliance Bancorporation provides an update on key financial information: On April 4, 2023, Western Alliance Bancorporation (the “Company”) issued a press release announcing it will distribute its first quarter 2023 financial results on April 18, 2023 and provided certain preliminary financial results for the first quarter 2023.","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1212545/000121254523000109/0001212545-23-000109-index.htm","confidence":0.9,"family_label":"Earnings Releases","details":[{"label":"Period","value":"first quarter 2023"},{"label":"Result","value":"reported results"}],"fact_type":"earnings_release"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}