{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-177591","form_type":"8-K","ticker":"NEU","cik":"0001282637","company_name":"NEWMARKET CORP","filed_at":"2023-06-28T23:59:59+00:00","discovered_at":"2026-05-14T18:03:38.259316+00:00","generated_at":"2026-06-13T15:26:22.346575+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"NewMarket waives forfeiture of ~1,600 performance shares for retiring Afton President","bullets":["Regina Anne Harm retires from NewMarket on Aug 1, 2023; previously stepped down as Afton Chemical President Dec 2022.","Compensation committee waives forfeiture of approximately 1,600 performance-based stock shares held by Harm.","Waived shares will only vest if applicable performance criteria are satisfied; no immediate vesting."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-177591","json":"https://secwatch.observer/filing/0001193125-23-177591.json","markdown":"https://secwatch.observer/filing/0001193125-23-177591.md","text":"https://secwatch.observer/filing/0001193125-23-177591.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1282637/000119312523177591/0001193125-23-177591-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1282637/000119312523177591/d527246d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-13T15:26:22.346575+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":"f6cd6ca07d","claim":"Regina Anne Harm departed as President of Afton Chemical Corporation at NEWMARKET CORP.","evidence_excerpt":"Ms. Harm will retire from the Company on August 1, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1282637/000119312523177591/0001193125-23-177591-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"President of Afton Chemical Corporation"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}