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Sumitomo Metal Mining (SMM, part of the Sumitomo Group, Tokyo-listed 5713) runs an integrated chain from mineral resources through smelting/refining to battery and electronic materials.
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, 1 customer-side. This is a partial view: it covers the relationships we could evidence, not the company's full supply base.
NAC's FY2025 17-A (Related Party Transactions, and Note 30a): NAC subsidiary RTN 'entered into an agreement with CBNC to supply all the limonite ore requirements for the Coral Bay HPAL facility,' and TMC 'entered into an agreement with THNC covering the sale of its ore products,' priced off LME. Coral Bay Nickel Corp (CBNC) and Taganito HPAL Nickel Corp (THNC) are SMM's own Philippine HPAL plants (per this dossier's production_footprint); NAC held equity in both until selling its 15.62% CBNC stake to SMM in Feb 2025. Ore stays within the Philippines for HPAL processing, so flow is domestic; SMM ships the resulting intermediate to its Niihama refinery in Japan. No tonnage or share-of-sales percentage disclosed in the reviewed passages.
Disclosed by the buyer. FCX FY2025 10-K (Morenci, Arizona): 'the remaining 28% is owned by Sumitomo (15%) and SMM Morenci, Inc. (13%). Each partner takes in kind its share of Morenci's production. FMC purchased 19 million pounds during 2025 and 15 million pounds during 2024 of Morenci's copper cathode from Sumitomo and SMM Morenci, Inc.' Copper cathode sold by the Morenci JV partners back to Freeport's US arm; 'Sumitomo' is not further defined in the quoted passage, SMM Morenci, Inc. is SMM's US subsidiary (SMM group-company list). related_party because SMM is a Morenci JV partner.
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.
6 other tracked dossiers name this company as a counterparty in its own sourced disclosure — this platform never wrote these rows on this company's own page, they are read here inverted from the dossier that disclosed them. This is a partial view: 1004 additional named-counterparty rows across the corpus could not be matched to a tracked dossier by name at all (mostly non-Latin legal names), so the true count is higher than what renders here.
PT Amman Mineral Internasional Tbk Annual Report 2023 (consolidated FS note 24, sales >10% of total; note 6 trade receivables). Before the 2024-26 smelter start-up AMNT's only saleable copper product was Batu Hijau (Sumbawa, Indonesia) concentrate; the AR states 'we have sold our products principally to copper smelters in Japan, South Korea, the Philippines, Indonesia, and India'. Trade receivables: 'Sumitomo Metal Mining Co. Ltd. 49,249 [US$ thousand, 2023] / 3,010 [2022]'. SMM's copper smelter is Toyo (Ehime, Japan). Receivable, not a sales-% figure. Checked 2026-09-28: AMMN Annual Report 2024 note 6 shows the SMM trade receivable at nil at 2024-12-31 (US$49,249k at 2023-12-31) and SMM is not among 2024 customers above 10% of sales (Glencore International AG 78.3%, LS Metals and Materials 10.4%); the 2025 report does not name SMM either, so this pair remains 2023-only evidence.
FCX FY2025 10-K (Morenci, Arizona): 'the remaining 28% is owned by Sumitomo (15%) and SMM Morenci, Inc. (13%). Each partner takes in kind its share of Morenci's production. FMC purchased 19 million pounds during 2025 and 15 million pounds during 2024 of Morenci's copper cathode from Sumitomo and SMM Morenci, Inc.' Copper cathode bought back by Freeport's US arm from its Morenci JV partners; 'Sumitomo' is not further defined in the quoted passage. related_party because the sellers are Morenci JV partners.
Seller is FCX's 55.08%-owned consolidated subsidiary Sociedad Minera Cerro Verde S.A.A. (Arequipa, Peru). Memoria Anual 2025, related-party table (p.222): 'Sumitomo Metal Mining Company Ltd. Grupo Economico Venta de mineral US$ 717,428,956'; destination table (p.26) puts 22% of copper concentrate sales in Japan. SMM's own Cerro Verde photo captions (https://www.smm.co.jp/en/corp_info/media_library/photo/): 'Copper concentrates are shipped to Toyo Smelter & Refinery with approximately two-month sea journey' (Toyo = Niihama, Ehime, Japan). Flow PE>JP = Cerro Verde mine to SMM Toyo smelter. related_party because SMM holds 21% of Cerro Verde via SMM Cerro Verde Netherlands B.V.
Compañía Contractual Minera Candelaria (Candelaria complex, Copiapó, Atacama, Chile; Lundin 80%) audited FY2025 IFRS statements filed with Chile's CMF (SARYT royalty registry), Note 12 related-party transactions: 'Sumitomo Metal Mining | Shareholder | Sales of copper concentrates | 635,014 | 473,783' (ThUS$, 2025 | 2024), i.e. US$635.0m in 2025 and US$473.8m in 2024. Note 29 long-term offtake: SMM takes 24% of Candelaria's estimated annual concentrate production. SMM's only copper smelter is Toyo Smelter & Refinery (Ehime, Japan).
NAC's FY2025 17-A (Related Party Transactions, Note 30a): NAC subsidiary RTN 'entered into an agreement with CBNC to supply all the limonite ore requirements for the Coral Bay HPAL facility,' and TMC 'entered into an agreement with THNC covering the sale of its ore products,' priced off LME. CBNC (Coral Bay Nickel Corp.) and THNC (Taganito HPAL Nickel Corp.) are Sumitomo Metal Mining's Philippine HPAL plants; NAC sold its 15.62% CBNC equity stake to SMM in Feb 2025 and holds 10% of THNC. Ore is mined and delivered within the Philippines (flow domestic); SMM ships the resulting mixed nickel-cobalt sulfide to its Niihama refinery in Japan. No tonnage or share-of-sales percentage disclosed in the reviewed passages.
Same disclosure: nickel matte sales to related parties domiciled in Canada (VCL) and Japan (SMM). Sales to SMM (11.48% shareholder) were US$91,397 thousand for H1 2025 (US$95,743 thousand H1 2024); sales to VCL+SMM together were 99% of total revenue in H1 2025.
Scope. This section is inverted evidence: each linked dossier wrote the original row about itself, describing its own relationship to this company. It is never a claim this company itself disclosed. Absence here is not evidence of no relationship — most of the corpus has no named-counterparty block at all yet.
This company sits on the supply side for 6 of its 6 materials — a restriction on those is a tailwind, not a headwind.
As a producer, policy pressure across its produced materials is coverage-limited.
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.