{"schema_version":"secwatch.filing_event.v1","accession":"0001212545-22-000138","form_type":"8-K","ticker":"WAL","cik":"0001212545","company_name":"WESTERN ALLIANCE BANCORPORATION","filed_at":"2022-09-07T23:59:59+00:00","discovered_at":"2026-05-14T18:03:55.157520+00:00","generated_at":"2026-06-23T13:48:42.526656+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Chief Legal Officer Randall Theisen to retire in Q1 2023","bullets":["Randall Theisen will step down as Chief Legal Officer and Corporate Secretary of Western Alliance Bancorporation and Western Alliance Bank.","Retirement effective in the first quarter of 2023.","No successor has been announced as of the filing date."],"urls":{"canonical":"https://secwatch.observer/filing/0001212545-22-000138","json":"https://secwatch.observer/filing/0001212545-22-000138.json","markdown":"https://secwatch.observer/filing/0001212545-22-000138.md","text":"https://secwatch.observer/filing/0001212545-22-000138.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1212545/000121254522000138/0001212545-22-000138-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1212545/000121254522000138/wal-20220906.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-23T13:48:42.526656+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":"d98024499a","claim":"Randall Theisen departed as Chief Legal Officer and Corporate Secretary at WESTERN ALLIANCE BANCORPORATION.","evidence_excerpt":"On September 6, 2022, Western Alliance Bancorporation (the “Company”) reported that Randall Theisen will retire from his current roles of Chief Legal Officer and Corporate Secretary of the Company and Western Alliance Bank (the “Bank”) in the first quarter of 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1212545/000121254522000138/0001212545-22-000138-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"Chief Legal Officer and Corporate Secretary"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}