Q4 2026 Related-Party IT Services Contract Amended — Purchase Up 20 %+ vs. Prior Estimate — SK Hynix

Summary

SK Hynix has filed an amended disclosure for its Q4 2026 (October–December 2026) goods and services transaction with SK Corp., its controlling shareholder affiliate. The revised purchase amount totals KRW 704.45 billion — covering IT system development (KRW 637.45 bn) and system operations and maintenance (KRW 67.0 bn) — both awarded on a sole-source basis and settled by promissory note. The amendment is triggered because the actual contract amount exceeds the originally estimated figure disclosed on 26 June 2026 by 20 % or more, as required under Fair Trade Act Article 26. At 0.81 % of SK Hynix's prior-year standalone revenue of KRW 86.85 trillion, the aggregate amount is meaningful but not exceptional for a large-scale IT infrastructure build-out.

Historical Impact

10 past Related-Party Transaction · ≈ 8-K events at SK Hynix

Median +5d

-12.90%

Range

-13.80% to +4.98%

Positive outcomes

3/10

Filed	P₀	P₊₅	+5d
Jul 27, 2026	₩1,816,000	₩1,598,000	-12.00%
Jul 27, 2026	₩1,816,000	₩1,598,000	-12.00%

Full Translation

Amendment to Goods and Services Transactions with Affiliated Companies of the Same Controlling Shareholder Version: 6.0 Company: SK Hynix Inc. Disclosure Type: Amendment — Goods and Services Transactions with Affiliated Companies of the Same Controlling Shareholder Conglomerate Group Name: SK Company Name: SK Hynix Inc. Disclosure Date: 2026.07.27 Applicable Regulation: Fair Trade Act, Article 26 (Unit: KRW millions) 1. Prior Fiscal Year Revenue of the Reporting Company (A): 86,852,117 2. Transaction Period: 2026.10.01 – 2026.12.31 (Q4 2026) 3. Board Resolution Date: 2026.07.22 Outside Directors Present: 6 Auditor (Audit Committee Member) Present: Yes Absent: — 4. Goods and Services Transaction Amounts with Affiliated Companies of the Same Controlling Shareholder | Counterparty (Affiliated Company) | Sales (B) | Purchases (C) | Total (D=B+C) | As % of Revenue (D/A) | |---|---|---|---|---| | SK Corp. | — | 704,450 | 704,450 | 0.81 % | 5. Details of Goods and Services Transactions Contract: System Improvement and Development Sales side — Subject: —, Terms: —, Purpose: —, Amount: —, Contract type: — Purchase side — Subject: Infra / System, Terms: Promissory note, Purpose: System improvement / development, Amount: 637,450, Contract type: Sole-source Contract: System Operations and Maintenance Sales side — Subject: —, Terms: —, Purpose: —, Amount: —, Contract type: — Purchase side — Subject: Infra / System, Terms: Promissory note, Purpose: System operations / maintenance, Amount: 67,000, Contract type: Sole-source 6. Bulk Disclosure by Contract Type (per Disclosure Regulation Article 9-2 Para. 4) | Contract Type | Sales — Main Counterparty | Sales — Amount | Purchases — Main Counterparty | Purchases — Amount | |---|---|---|---|---| | Open competitive bid | — | — | — | — | | Restricted competitive bid | — | — | — | — | | Named competitive bid | — | — | — | — | | Sole-source | — | — | SK Corp. | 704,450 | 7. Related Prior Disclosure Date: 2026.06.26 (Goods and Services Transactions with Affiliated Companies of the Same Controlling Shareholder) 8. Additional Notes - This amendment is filed because the actual transaction amount for Q4 2026 has increased by 20 % or more relative to the estimated transaction amount disclosed on 2026.06.26. - The prior-year revenue figure in item 1 is based on the separate (non-consolidated) income statement as of 2025.12.31.