---
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"
generated_at: "2026-06-13T15:26:22.346575+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# NewMarket waives forfeiture of ~1,600 performance shares for retiring Afton President

## Summary
- 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.

## SEC filing metadata
- 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
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- 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

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-177591
- JSON: https://secwatch.observer/filing/0001193125-23-177591.json
- Plain text: https://secwatch.observer/filing/0001193125-23-177591.txt

## Key facts
- Executive change
  Regina Anne Harm departed as President of Afton Chemical Corporation at NEWMARKET CORP.
  - Action: retire
  - Role: President of Afton Chemical Corporation
  source text: Ms. Harm will retire from the Company on August 1, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1282637/000119312523177591/0001193125-23-177591-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.