{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-057420","form_type":"8-K","ticker":"NEU","cik":"0001282637","company_name":"NEWMARKET CORP","filed_at":"2026-02-18T23:59:59+00:00","discovered_at":"2026-05-14T18:02:34.700471+00:00","generated_at":"2026-05-16T01:57:57.180054+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"NewMarket appoints Susan M. Ridlehoover as Principal Accounting Officer","bullets":["Susan M. Ridlehoover, 45, appointed Principal Accounting Officer effective Feb 18, 2026.","She joined NewMarket as Controller in January 2026 after serving as Senior Director, Corporate Controller at Sonoco.","Base salary of $235,000; eligible for cash bonuses, restricted stock awards, and company benefit programs.","Ridlehoover is a licensed CPA in Virginia with over 20 years of accounting and finance experience."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-057420","json":"https://secwatch.observer/filing/0001193125-26-057420.json","markdown":"https://secwatch.observer/filing/0001193125-26-057420.md","text":"https://secwatch.observer/filing/0001193125-26-057420.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1282637/000119312526057420/0001193125-26-057420-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1282637/000119312526057420/d22589d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T01:57:57.180054+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"}