Q3 2026 Related-Party Services Transaction Amendment: Actual Spend Exceeds Forecast by 20%+ — SK Hynix

Summary

SK Hynix has filed an amended related-party transaction disclosure for Q3 2026, triggered by actual purchases from its controlling-shareholder affiliate SK Inc. coming in more than 20% above the amount originally disclosed in December 2025. Total Q3 2026 purchases from SK Inc. amount to KRW 120.6 billion (0.14% of prior-year standalone revenue), covering IT system development (KRW 31.3 bn), system operation and maintenance (KRW 65.4 bn), and education services (KRW 24.0 bn). All contracts were concluded on a negotiated basis, with payment via promissory note. The board approved the transactions on July 22, 2026, with all six outside directors present. This is a routine regulatory filing under Fair Trade Act Article 26 and does not signal any strategic change.

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

Change in Goods/Services Transactions with Affiliated Companies of the Same Person's Investment Version: 6.0 Company: SK Hynix Inc. Filing Type: Change in Goods/Services Transactions with Affiliated Companies of the Same Person's Investment Conglomerate Group Name: SK Company Name: SK Hynix Inc. Disclosure Date: 2026.07.27 Applicable Law: Fair Trade Act, Article 26 (Unit: KRW millions) 1. Prior Fiscal Year Revenue of the Reporting Company (A): 86,852,117 2. Transaction Period: 2026.07.01 – 2026.09.30 (Q3 2026) 3. Board Resolution Date: 2026.07.22 Outside Directors Present: 6 | Absent: – Audit (Audit Committee) Attendance: Present 4. Goods/Services Transaction Amounts with Affiliated Companies of the Same Person's Investment | Counterparty | Revenue (B) | Purchases (C) | Total (D=B+C) | As % of Revenue (D/A) | |---|---|---|---|---| | SK Inc. | – | 120,640 | 120,640 | 0.14% | 5. Goods/Services Transaction Details Contract: System Improvement and Development Purchase side — Subject: Infra/System | Payment: Promissory Note | Purpose: System improvement/development | Amount: 31,260 | Contract Type: Negotiated Contract Contract: System Operation and Maintenance Purchase side — Subject: Infra/System | Payment: Promissory Note | Purpose: System operation/maintenance | Amount: 65,380 | Contract Type: Negotiated Contract Contract: Education Services Agreement Purchase side — Subject: Education Operations | Payment: Promissory Note | Purpose: Education | Amount: 24,000 | Contract Type: Negotiated Contract 6. Batch Disclosure by Contract Type (per Disclosure Regulation Article 9-2, Paragraph 4) Competitive bidding: – | Restricted competitive bidding: – | Designated competitive bidding: – | Negotiated contract: all purchases above (SK Inc., total 120,640) 7. Related Prior Disclosures – 2025.12.26: Goods/Services Transactions with Affiliated Companies of the Same Person's Investment 8. Other Notes – This amended disclosure is filed because actual Q3 2026 transaction amounts increased by 20% or more compared to the forecast amounts disclosed on 2025.12.26. – The prior-year revenue figure in Item 1 is based on the standalone (separate) income statement as of 2025.12.31.