Koppers Holdings Inc. Stock: price and insider trades · United States · SEC (Form 4)

About Koppers Holdings Inc.

Koppers Holdings Inc. (NYSE: KOP) is a U.S.-based industrial specialty company headquartered in Pittsburgh, Pennsylvania, in the United States. For international investors, Koppers sits at the intersection of industrial materials, wood-preservation chemistry, and rail and utility infrastructure. The company describes itself as an integrated global provider of treated wood products, wood treatment chemicals, and carbon compounds, supported by a worldwide manufacturing footprint and a workforce of more than 2,100 employees. Its roots go back to the early 1900s and the work of German engineer Heinrich Koppers, whose coke-oven technology focused on recovering byproducts for productive reuse—an origin that still shapes the company’s emphasis on materials transformation, circularity, and industrial efficiency. Koppers’ business model is organized around three principal segments: Railroad and Utility Products and Services (RUPS), Performance Chemicals (PC), and Carbon Materials and Chemicals (CMC). RUPS supplies pressure-treated railroad crossties, utility poles, and related infrastructure products and services, mainly serving North American railroads and utility customers in the United States and Australia. PC manufactures wood-preservation chemicals and related formulations used in treating poles, pilings, and outdoor structures. CMC processes coal-tar-derived feedstocks into creosote, carbon pitch, naphthalene, and other industrial chemicals, some of which are used internally and some sold to external industrial customers. Koppers’ competitive position is that of a specialized but strategically important industrial supplier with vertical integration across upstream chemicals and downstream wood-treatment applications. That integration can support supply reliability, operating leverage, and long-standing customer relationships with rail operators, utilities, and industrial buyers. The company’s geographic reach spans North America, South America, Australasia, and Europe, giving it a broader footprint than a purely domestic U.S. niche manufacturer. Recent developments are also important. In February 2026, Koppers reported full-year 2025 results and disclosed 2025 sales of $1.88 billion and adjusted EBITDA of $256.7 million. In 2025, management also announced “Catalyst,” a multi-phase enterprise transformation program designed to identify and execute commercial and cost-saving initiatives across the organization over a multi-year period. The company has framed this program as a way to improve margins, free cash flow, and return on capital. For investors, Koppers offers exposure to essential infrastructure spending, industrial chemicals, and a management-led efficiency initiative, while remaining sensitive to demand trends, raw-material dynamics, and geopolitical or supply-chain volatility.