---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-288480"
form_type: "8-K"
ticker: "NEU"
cik: "0001282637"
company_name: "NEWMARKET CORP"
filed_at: "2023-12-04T23:59:59+00:00"
generated_at: "2026-06-07T18:35:52.000352+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# NewMarket acquires AMPAC for ~$700M, expands into defense/space rocket motor additives

## Summary
- Purchase price ~$700M; expected close Q1 2024; subject to HSR antitrust clearance.
- AMPAC is leading North American manufacturer of solid rocket motor performance additives, qualified on NASA and DoD programs.
- Financing via available cash and revolver; no shareholder vote required.
- AMPAC has one facility in Cedar City, UT, ~150 employees; founded 1955.
- Chairman/CEO Thomas Gottwald calls AMPAC a strategic national asset and a terrific fit with NewMarket's diversification criteria.

## SEC filing metadata
- accession: 0001193125-23-288480
- form_type: 8-K
- ticker: NEU
- cik: 0001282637
- company_name: NEWMARKET CORP
- filed_at: 2023-12-04T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1282637/000119312523288480/0001193125-23-288480-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1282637/000119312523288480/d569404d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-288480
- JSON: https://secwatch.observer/filing/0001193125-23-288480.json
- Plain text: https://secwatch.observer/filing/0001193125-23-288480.txt

## Key facts
- Material Agreements
  NEWMARKET CORP entered into Securities Purchase Agreement with Coyote Ultimate Holdings, LLC valued at approximately $700 million (effective 2023-12-01).
  - Action: entry
  - Agreement: asset purchase
  - Counterparty: Coyote Ultimate Holdings, LLC
  - Value: approximately $700 million
  - Effective: 2023-12-01
  source text: On December 1, 2023, NewMarket Corporation, a Virginia corporation (the “Company”), entered into a Securities Purchase Agreement (the “Purchase Agreement”) with Coyote Ultimate Holdings, LLC, a Delaware limited liability company (“Coyote”), and AMPAC Intermediate Holdings, LLC, a Delaware limited liability company (“Holdings”), to acquire from Coyote all issued and outstanding ownership units of Holdings, the ultimate parent company of American Pacific Corporation (“AMPAC”), for approximately $700 million, subject to a purchase price adjustment for customary items, including working capital, cash, debt and transaction expenses (the “Acquisition”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1282637/000119312523288480/0001193125-23-288480-index.htm

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