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SK On is a South Korean EV battery cell and pack maker, spun off from SK Innovation's battery division in October 2021 (SK Group).
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.
SK On signed a 5-year deal (signing ceremony 2022-11-04, Seoul) to purchase up to 57,000 tons of battery-grade lithium hydroxide from SQM starting 2023, described as strengthening SK On's supply chain 'in coping with the U.S. Inflation Reduction Act (IRA)'. Source references SQM's IRMA-audited Atacama site in general terms but does not explicitly state this specific tonnage is Atacama-sourced, nor does it name a delivery country -- omitted flow accordingly; the IRA framing points toward SK On's US cell plants (Commerce, TN; Bartow County, GA), not its Seoul HQ.
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.
10 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: 989 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.
Same Yicai client list (LG Chem, SK On, Posco Chemical).
Up to 6,000 t of Korean-sourced lithium hydroxide planned by end-2025 (enough for ~100,000 EV batteries); multi-year 2026-2028 supply agreement for mid-term procurement. Lithium hydroxide processed at Korean cathode facilities, exported to SK On's US battery plants. No contract value or share percentage disclosed.
SK On signed a 5-year deal (signing ceremony 2022-11-04, Seoul) to purchase up to 57,000 tons of battery-grade lithium hydroxide from SQM starting 2023, described as strengthening SK On's supply chain 'in coping with the U.S. Inflation Reduction Act (IRA)'. Source references SQM's IRMA-audited Atacama site in general terms but does not explicitly state this specific tonnage is Atacama-sourced, nor does it name a delivery country -- omitted flow accordingly; the IRA framing points toward SK On's US cell plants (Commerce, TN; Bartow County, GA), not its Seoul HQ.
Announced 2023-04-25 as a Hyundai Motor Group (Hyundai Motor Company/Kia/Hyundai Mobis) and SK On 50/50 JV. Kia Media press-release URL replaced 2026-09-26 after the hyundai.com newsroom URL 404'd; found via search, 50/50 split taken from the search summary of that release, page not fetched. Re-verified 2026-09-26: Korea Herald confirms mass production from June 2026, 35 GWh/yr nameplate once ramped; cells are assembled into packs by Hyundai Mobis and supplied to Hyundai, Kia and Genesis EVs built in the US, no per-brand volume split disclosed. Korea Herald does not itself state the ownership split.
Announced 2023-04-25 as a Hyundai Motor Group (Hyundai Motor Company/Kia/Hyundai Mobis) and SK On 50/50 JV, since named Hyundai-SK Battery Manufacturing America (HSBMA). Originally targeted H2 2025; re-verified 2026-09-15 — commercial production actually began 2026-06-01, ~7 months later than the original target (per SK On/Hyundai joint statements and multiple trade-press reports of the plant's opening and first cell shipments, July 2026). SK On cells go into Hyundai IONIQ 5, IONIQ 6 and Genesis GV60 among other Group E-GMP models (per Hyundai's own release and follow-on reporting) -- no per-model or per-brand volume/percentage split disclosed.
Rank-1 customer at RMB 3,472,997,237.57 — name redacted as 客户一 in the customer table, but the related-party note discloses sales to SK on of the identical figure to the yuan. Same identity holds in FY2024 (RMB 3,037,863,125.75 = 21.34%). Also rank-4 SUPPLIER (供应商二, RMB 470,651,192.80 = 3.39% of procurement = raw materials 470,091,947.54 + services 559,245.26). Related because SK on holds 25.00% of BTR subsidiary Changzhou BTR New Material Technology plus a board seat, since 2022-06-30.
H1-2026 semi-annual report (filed 2026-08-28, R145 deadline pull). Sales to SK on (销售商品): RMB 2,181,127,395.40 of RMB 10,220,514,268.03 total H1-2026 revenue = 21.34%. Also a supplier: purchases from SK on (采购原材料 + 接受劳务) totalled RMB 645,403,873.45, = 7.86% of H1-2026 cost of sales (RMB 8,212,380,732.43) — a supplier-side share on a cost-of-sales basis, not directly comparable to the FY2025 note's 3.39%-of-procurement figure since procurement and COGS are different bases; recorded here as the closest available denominator in this filing. Same related-party basis as the FY2025 row (SK on holds 25.00% of Changzhou BTR plus a board seat).
H1-2025 comparative from the same H1-2026 filing. Sales to SK on: RMB 1,737,502,797.28 of RMB 7,837,646,228.04 total H1-2025 revenue = 22.17% (-0.83 pts vs H1-2026, even as SK on's absolute spend grew 25.5%, because total revenue grew faster at 30.4%). Purchases from SK on: RMB 269,463,991.00, = 4.44% of H1-2025 cost of sales (RMB 6,066,650,863.45).
RMB 2.076m (0.00% rounds down — negligible but disclosed), approved quota RMB 4.50m. Related via the same shared director (Jiang Min) as the Smoore row. Disclosed content: EVE selling cathode active material, anode active material, aluminium foil, separator and lithium-nickel-cobalt-manganese oxide (an NCM cathode precursor) to SK On's Jiangsu unit — evidence EVE also trades battery raw/precursor materials, not only finished cells.
New H1-2026 name, not in the FY2025 filing. MD&A: solid-state battery collaboration 'proceeding smoothly' alongside LGES/Molicel/WeLion/QingTao Energy. No volume or contract value disclosed (p.10 of the PDF).
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.
Every exposure is read as a buyer dependency; the top 3 are its binding chokepoints.
As a buyer, policy pressure across its consumed materials is flat.
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.