What Enviri Corp. told the SEC could break it.

Although no single customer exceeds 10% of Enviri's consolidated revenue, each segment has customer concentration: Harsco Environmental (HE) had one customer providing more than 10% of segment revenue in each of 2025/2024/2023 under multiple long-term contracts at several steel-mill sites; Clean Earth had one >10% customer; and Rail had two >10% customers in 2025/2024. HE's revenue is broadly tied to the global steel industry (70 mill-services customers at ~120 sites across ~30 countries), and the company notes that further consolidation among large steel producers would increase its concentration of credit risk. Loss of these contracts could materially affect quarterly/annual results. Customers are not named, so a segment customer-concentration / steel-sector-dependence risk rather than named edges.

“In 2025, 2024 and 2023, HE had one customer that provided in excess of 10% of its revenues under multiple long-term contracts at several mill sites.”

Enviri carries legacy environmental remediation exposure: on January 27, 2020 the EPA issued a Notice of Potential Liability to the Company (along with several other companies) concerning the Newtown Creek Superfund Site in Kings and Queens Counties, New York, alleging that certain facilities formerly owned or operated by its subsidiaries may have caused contamination. As a potentially responsible party at a large urban Superfund site, Enviri faces uncertain but potentially material remediation cost-allocation exposure (it also has other environmental obligations, e.g., a supplemental environmental project/stormwater compliance). A named, long-tail environmental-litigation/remediation exposure.

“On January 27, 2020, the EPA issued a Notice of Potential Liability to the Company, along with several other companies, concerning the Newtown Creek Superfund Site located in Kings and Queens Counties in New York”

Enviri is exposed to trade policy on two fronts. Because Harsco Environmental's revenue depends on steel producers, tariffs that raise the cost of imported steel can help its U.S.-located steel customers but hurt non-U.S. customers that export steel to the U.S. — making the net effect on demand uncertain. Separately, U.S. tariffs on imports from countries where Enviri operates (including China and Mexico) raise its own manufacturing costs (notably in the Rail equipment business). The company states tariffs and related uncertainty have already affected, and could continue to adversely affect, customer demand and its manufacturing costs, and its mitigation through pricing may not be effective. A two-sided steel-tariff/trade-policy exposure.

“Tariffs, and uncertainty related thereto, have affected and could continue to adversely affect customers' demand for the Company's products and services, the Company's manufacturing costs”