---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-267201"
form_type: "8-K"
ticker: "NEU"
cik: "0001282637"
company_name: "NEWMARKET CORP"
filed_at: "2025-11-05T23:59:59+00:00"
generated_at: "2026-05-17T00:12:09.932561+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# NewMarket Controller and PAO Ann Pietrantoni resigns; CFO Fitzgerald to take over PAO role

## Summary
- Ann P. Pietrantoni, Controller and Principal Accounting Officer, resigns effective November 26, 2025 to pursue other opportunities.
- Resignation is not due to any dispute or disagreement with the Company.
- Timothy K. Fitzgerald, Vice President and CFO, will serve as interim Principal Accounting Officer.

## SEC filing metadata
- accession: 0001193125-25-267201
- form_type: 8-K
- ticker: NEU
- cik: 0001282637
- company_name: NEWMARKET CORP
- filed_at: 2025-11-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1282637/000119312525267201/0001193125-25-267201-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1282637/000119312525267201/d751254d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-267201
- JSON: https://secwatch.observer/filing/0001193125-25-267201.json
- Plain text: https://secwatch.observer/filing/0001193125-25-267201.txt

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