Compass Minerals International (NYSE: CMP) is a mineral extraction company that produces and sells salt and specialty plant nutrition products. It makes money by mining and processing rock salt for highway deicing and selling sulfate of potash (SOP) fertilizer to agricultural customers. The Salt segment generated 63% of Salt segment sales from highway deicing in fiscal 2025, with the remainder from consumer, industrial, and chemical uses. The Plant Nutrition segment generates nearly all of its sales and earnings from SOP, a specialty potassium fertilizer that commands a price premium over muriate of potash (MOP) due to its sulfur content and chloride-free composition. Operations span the U.S., Canada, and the UK, with 72% of fiscal 2025 sales denominated in U.S. dollars and 28% in foreign currencies. The company maintains an extensive network of approximately 80 depots for storage and distribution of highway deicing salt across North America, with key assets at the Great Salt Lake and underground mines. Interest expense was $68.5 million in fiscal 2025, indicating a debt-heavy capital structure.

Revenue model

Transactional sales of bulk and treated deicing salt under annual tendered bid contracts and multi-year contracts with government entities, plus spot and contract sales of SOP fertilizer to agricultural distributors. No subscription or royalty model disclosed.

Products and services

Highway deicing salt (bulk and treated rock salt with brine magnesium chloride), consumer and industrial salt, SOP (sulfate of potash) specialty fertilizer, magnesium chloride products sourced from the Great Salt Lake.

Customers and end markets

Primary Salt customers are state and provincial governments, counties, municipalities, and road maintenance contractors purchasing bulk deicing salt for public roadways. SOP sales are concentrated in Western and Southeastern U.S. agricultural markets serving high-value or chloride-sensitive crops.

Value-chain role

Vertically integrated mineral producer: extraction, processing, and direct sale of salt and SOP. Operates its own mine and depot distribution network of approximately 80 locations in North America (fiscal 2025).

Geographic exposure

Primary operations in the U.S., Canada, and the UK. 72% of fiscal 2025 sales in U.S. dollars, 28% in foreign currencies (Canadian dollars and British pounds sterling). Approximately $360 million of net assets denominated in foreign currencies as of fiscal 2025.

Source: SEC 10-K, filed 2025-12-12

Industry: Mining & Quarrying of Nonmetallic Minerals (No Fuels) Peers: 5E Advanced Materials Inc Ameritrust Corp Materion Corp MP Materials Corp Piedmont Lithium Inc.