HL · CIK 0000719413
What Hecla Mining Co. told the SEC could break it.
Hecla's risks cluster on concentration at both ends of its mining business. On the demand side, its three largest customers were about 25%, 23% and 14% of 2025 revenue, and its specialized concentrates can be processed by only a limited number of smelters; on the supply side, a single mine — Greens Creek in Alaska — generated 44.3% of metals sales, with the rest spread across just three other mines. Layered on top is direct commodity-price exposure (a 10% move in metal prices shifts concentrate value by roughly $18.3 million) and a trade shock: U.S.–China reciprocal tariffs, currently 20% on its silver concentrate, have effectively closed the China market, which fell from $184 million of sales in 2024 to $30 million in 2025. It also carries CERCLA cleanup liability as a named responsible party for New Mexico's San Mateo Creek Basin.
5 self-disclosed vulnerabilities, pulled from its own filings, each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Customer concentration
- three largest customers (25% / 23% / 14%)high
Hecla's three largest customers were ~25%, 23% and 14% of FY2025 revenue; its unique concentrates can be processed by only a limited number of smelters, and its ERDC subsidiary's remediation revenue is 100% from a single customer (CIRNAC, Govt of Canada).
“For the fiscal year ended December 31, 2025, our three largest customers accounted for approximately 25%, 23% and 14%, respectively, of our total revenues.”
SEC filing →As of 2026
Commodity & input dependence
- silver/gold/zinc/lead price exposuremedium
As a precious/base-metals producer, Hecla's revenue is directly exposed to metals prices: a 10% change in each metal's price would shift the value of concentrates sold by ~$18.3 million.
“If the price for each metal were to change by 10%, the change in the total value of the concentrates sold would be approximately $18.3 million.”
SEC filing →As of 2026
Geographic concentration
- Greens Creek mine (Alaska) — 44.3% of metals salesmedium
A single mine, Greens Creek in Alaska, contributed 44.3% of Hecla's 2025 metals sales; production is concentrated across four mines (two in Canada), exposing it to single-asset and political risk.
“The contributions to our total metals sales by our significant operations in 2025 were 44.3% from Greens Creek, 23.0% from Casa Berardi, 22.2% from Lucky Friday and 10.5% from Keno Hill.”
SEC filing →As of 2026
Litigation
- CERCLA PRP liability — San Mateo Creek Basin, NMmedium
Hecla Limited has been named a potentially responsible party for cleanup of the ~321 sq mi San Mateo Creek Basin in New Mexico (legacy uranium mines/mills); EPA reported ~$9.6M in response costs and PRPs may seek cost recovery under CERCLA.
“potentially responsible parties (“PRPs”) may be liable for cleanup of the San Mateo Creek Basin (“SMCB”), which is an approximately 321 square mile area in New Mexico that contains numerous legacy uranium mines and mills.”
SEC filing →As of 2026
Regulatory & policy
- China tariffs closed the China silver-concentrate marketmedium
U.S./China reciprocal tariffs — currently 20% on Hecla's silver concentrate — have effectively closed the China market; Hecla has shipped no products to China since March 2025 (China was $184M of sales in 2024, down to $30M in 2025).
“due to U.S. tariffs and China's reciprocal tariffs - currently 20% on our silver concentrate, the China market is effectively closed for us, and we have not shipped any products to China since March 2025.”
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