{"schema_version":"secwatch.filing_event.v1","accession":"0001212545-25-000242","form_type":"8-K","ticker":"WAL","cik":"0001212545","company_name":"WESTERN ALLIANCE BANCORPORATION","filed_at":"2025-09-12T23:59:59+00:00","discovered_at":"2026-05-14T18:02:43.513314+00:00","generated_at":"2026-05-17T06:43:24.352083+00:00","sec_items":["8.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Western Alliance announces $300M common stock repurchase program with no expiration","bullets":["Board authorized up to $300M in share repurchases; no expiration date set.","CEO cites strong business momentum and robust capital generation for the program.","Shares may be bought via open market, private transactions, or 10b5-1 trading plans.","Repurchase timing and amount depend on market conditions, stock price, and regulatory limits.","Program may be terminated at any time at the Board's sole discretion."],"urls":{"canonical":"https://secwatch.observer/filing/0001212545-25-000242","json":"https://secwatch.observer/filing/0001212545-25-000242.json","markdown":"https://secwatch.observer/filing/0001212545-25-000242.md","text":"https://secwatch.observer/filing/0001212545-25-000242.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1212545/000121254525000242/0001212545-25-000242-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1212545/000121254525000242/wal-20250912.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T06:43:24.352083+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"}