NewMarket Corp

NewMarket Corporation is a holding company operating through four subsidiaries: Afton Chemical Corporation, Ethyl Corporation, American Pacific Corporation (AMPAC), and Calca Solutions, LLC. It reports two segments.

The Petroleum Additives segment is run through Afton and Ethyl. These companies develop, manufacture, blend, and deliver chemical additives, including lubricant and fuel additives, that enhance the performance of petroleum products. The segment serves customers across North America, Latin America, Asia Pacific, and Europe/Middle East/Africa/India, and it generates the large majority of company sales.

The Specialty Materials segment operates primarily in North America and serves the aerospace and defense industries:
- AMPAC manufactures specialty materials, such as ammonium perchlorate, used mainly in solid rocket motors.
- Calca, acquired October 1, 2025, produces Ultra Pure and high-purity hydrazine propellants.

Capacity expansions for both ammonium perchlorate and hydrazine are expected to be completed by the end of 2026. The company returns cash to shareholders through quarterly dividends and share repurchases, and also reinvests in technology, capacity, and acquisitions. Updated Oct 28, 2026