{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-341337","form_type":"8-K","ticker":"ONTO","cik":"0000704532","company_name":"ONTO INNOVATION INC.","filed_at":"2026-08-10T12:16:49+00:00","discovered_at":"2026-08-10T12:20:00.338570+00:00","generated_at":"2026-08-10T12:20:10.989915+00:00","sec_items":["2.01","7.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Onto Innovation closes $720M purchase of 27% stake in Rigaku Holdings","bullets":["Completed purchase of 61,123,436 Rigaku shares (27% of outstanding) from Atom Investment, a Carlyle affiliate, for ~$720M (¥113.08B).","Investment deepens strategic collaboration on X-ray process control for semiconductor manufacturing; first announced April 2026.","Onto will account for investment under fair value option, not consolidate Rigaku; will nominate a director to Rigaku's board.","CEO Mike Plisinski says investment accelerates innovation and enhances holistic process control solutions for next-gen chips."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-341337","json":"https://secwatch.observer/filing/0001193125-26-341337.json","markdown":"https://secwatch.observer/filing/0001193125-26-341337.md","text":"https://secwatch.observer/filing/0001193125-26-341337.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/704532/000119312526341337/0001193125-26-341337-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/704532/000119312526341337/d125405d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-08-10T12:20:10.989915+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"}