{"schema_version":"secwatch.filing_event.v1","accession":"0001140361-25-040434","form_type":"8-K","ticker":"ON","cik":"0001097864","company_name":"ON SEMICONDUCTOR CORP","filed_at":"2025-11-05T23:59:59+00:00","discovered_at":"2026-05-14T18:02:38.788264+00:00","generated_at":"2026-05-17T00:10:41.130446+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Board Chair Alan Campbell to retire at 2026 annual meeting; Thomas Deitrich named successor","bullets":["Alan Campbell to retire as chair and director at end of term, effective immediately prior to May 14, 2026 annual meeting.","Board appointed Thomas L. Deitrich to succeed Campbell as chair, contingent on Deitrich's renomination and reelection.","Campbell confirmed retirement not due to any disagreement with company's operations, policies, or practices."],"urls":{"canonical":"https://secwatch.observer/filing/0001140361-25-040434","json":"https://secwatch.observer/filing/0001140361-25-040434.json","markdown":"https://secwatch.observer/filing/0001140361-25-040434.md","text":"https://secwatch.observer/filing/0001140361-25-040434.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1097864/000114036125040434/0001140361-25-040434-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1097864/000114036125040434/ef20058222_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T00:10:41.130446+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"}