{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-047728","form_type":"8-K","ticker":"ON","cik":"0001097864","company_name":"ON SEMICONDUCTOR CORP","filed_at":"2025-03-06T23:59:59+00:00","discovered_at":"2026-05-14T18:03:02.926329+00:00","generated_at":"2026-05-25T04:52:07.532885+00:00","sec_items":["8.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"onsemi proposes to acquire Allegro MicroSystems for $35.10 per share cash, $6.9B EV","bullets":["All-cash proposal at $35.10/share represents 57% premium to Allegro's close on Feb 28, 2025.","Implied enterprise value of $6.9 billion; initial $34.50/share offer made Sept 2, 2024.","onsemi has attempted engagement for six months; urges Allegro board to negotiate in good faith.","No financing contingency; deal would be funded by committed financing, cash, and revolving credit.","Combination aims to create a diversified leader in automotive, industrial, and AI data center applications."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-047728","json":"https://secwatch.observer/filing/0001193125-25-047728.json","markdown":"https://secwatch.observer/filing/0001193125-25-047728.md","text":"https://secwatch.observer/filing/0001193125-25-047728.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1097864/000119312525047728/0001193125-25-047728-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1097864/000119312525047728/d891589d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-25T04:52:07.532885+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"}