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Hemlock Semiconductor (HSC) makes hyper-pure polysilicon for the semiconductor and solar industries at a chemical-processing plant in Hemlock, Michigan. It is a joint venture of Corning Inc. and Shin-Etsu Handotai, and the corpus records Corning's stake as 80.5 % (see corning-incorporated).
Named counterparties identified by open-source research and written only where a primary source states the relationship — never inferred from sector or co-mention. 1 supplier. This is a partial view: it covers the relationships we could evidence, not the company's full supply base.
US import bills of lading, shipper Ligas De Aluminio S/A - Liasa (Pirapora, Minas Gerais, Brazil), consignee Hemlock Semiconductor, '19 METRIC TONS SILICON METAL' HS 2804.69.10.00, 95,190 kg each, BoL MEDURN075706 (arrival 2026-09-13) and MEDURN065905 (arrival 2026-08-23), lading port Brazil. Liasa's silicon metal smelter is at Pirapora MG; Hemlock's polysilicon plant is in Hemlock, Michigan. Liasa's other 2026 lots go to C. Steinweg Baltimore (warehouse) or unnamed consignees.
Scope. Absence of a counterparty here is not evidence that none exists — most commercial sourcing is confidential and never becomes public. Rows without a share figure mean no share was disclosed, not that the relationship is small.
This company sits on the supply side for 1 of its 1 materials — a restriction on those is a tailwind, not a headwind.
As a producer, policy pressure across its produced materials is rising.
Descriptive trend in official policy actions on this company’s materials — a policy-pressure trend, not a price or trading signal. No forward probability is implied. Direction is measured on actions we have discovered, and discovery lags events: where the recent window is too thin to support a calm reading, the row says coverage-limited instead of easing.
No actions in the register have named or swept this company in the last 24 months.