Annual Large Business Group Status Disclosure (Individual Company) — SK Hynix

Summary

This is the annual mandatory disclosure of corporate group status for a member of the SK Group, whose designated head is Chairman Tae-won Chey and whose representative company is SK Inc. As of the latest fiscal year-end, the company reported standalone total assets of KRW 168.9 trillion, total equity of KRW 117.3 trillion, and a debt-to-equity ratio of 43.97%, with revenue of KRW 86.85 trillion, operating profit of KRW 44.01 trillion, and net income of KRW 42.69 trillion. The filing also lists 34,200 employees and an extensive roster of overseas affiliates spanning the U.S., China, Japan, Singapore, Germany, and other regions, primarily covering semiconductor sales, R&D, and the Solidigm NAND business. This is a routine regulatory filing with no new strategic announcements.

Historical Impact

4 past Large Business Group Filing events at SK Hynix

Median +5d

+2.16%

Range

-21.21% to +12.71%

Positive outcomes

3/4

Filed	P₀	P₊₅	+5d
Feb 27, 2026	₩1,061,000	₩836,000	-21.21%
Nov 28, 2025	₩530,000	₩544,000	+2.64%

Full Translation

Corporate Group Status Disclosure (Annual - Individual Company) 6.2 SK hynix Inc. Status Disclosure for Member Companies of a Large Business Group Business Group Name: SK Business Group Designated Person (Dong-il-in): Chey Tae-won Business Group Representative Company: SK Inc. Preparing Company: SK hynix Inc. Contact: Kim Sang-hwa (TL), Phone: 031-8093-4513 <Reference> The representative company for SK business group disclosures is SK Inc., and the overall SK business group status disclosure is identical to the one submitted by SK Inc. Please refer to the SK business group status disclosure submitted by SK Inc. 1. General Status (1) Company Overview (as of this year's designation date, unit: persons) - Member Company Name: SK hynix Inc. (Non-financial) - Representative: Kwak No-jeong - Establishment Date: 1949.10.15 - Date of Affiliate Inclusion: 2012.04.02 - Industry: C2611 (Electronic Integrated Circuit Manufacturing) - Number of Employees: 34,200 - Public Listing: Listed - Fiscal Year-End: 2025.12.31 (1-1) Business Activities (as of this year's designation date) SK hynix Inc. (Non-financial): - C2611 (Electronic Integrated Circuit Manufacturing): DRAM, NAND, MCP manufacturing, etc. - N7639 (Other Industrial Machinery and Equipment Rental): Semiconductor equipment rental - L6811 (Real Estate Rental): Building and office rental - N7591 (Office Support Services): Service provision (affiliate Shared Service) - N7640 (Intangible Property Rights Rental): Brand management - D3511 (Power Generation): Electricity sales (reverse transmission) (2) Company Financial Status: Standalone Balance Sheet Basis (as of end of prior fiscal year, unit: KRW million, %) SK hynix Inc. (Non-financial): - Current Assets (a): 46,296,938 - Cash & Cash Equivalents in Current Assets: 2,403,922 - Non-current Assets (b): 122,606,991 - Total Assets (a+b): 168,903,929 - Current Liabilities (c): 34,536,586 - Non-current Liabilities (d): 17,048,781 - Total Liabilities (c+d): 51,585,367 - Borrowings within Total Liabilities: 20,160,455 - Capital Stock: 3,657,652 - Total Equity: 117,318,562 - Debt-to-Equity Ratio (Total Liabilities/Total Equity): 43.97% (3) Company Profit and Loss Status: Standalone Income Statement Basis (as of end of prior fiscal year, unit: KRW million) SK hynix Inc. (Non-financial): - Revenue (or Operating Revenue): 86,852,117 - Operating Profit: 44,007,409 - Other Income, etc.: 18,307,390 - Other Expenses, etc.: 12,256,341 - Interest Expense within Other Expenses: 813,345 - Net Income: 42,688,817 (4) Overseas Affiliate Status: Overseas affiliates in which a domestic affiliate is the largest shareholder (as of this year's designation date) - Gauss Labs Inc. – ICT, 97.38% internal stake, USA, FYE 2025.12.31, largest shareholder: SK hynix Inc. (97.38%) - HITECH Semiconductor (Wuxi) Co., Ltd. (HITECH) – Semiconductor Production, 45.00%, China, FYE 2025.12.31, largest shareholder: Taeguk Industrial (55.00%) - SK APTECH Ltd. – Overseas Investment, 100.00%, Hong Kong, FYE 2025.12.31, largest shareholder: SK hynix Inc. (100.00%) - SK Hynix (Wuxi) Education Service Development Co., Ltd. – Educational Entity, 100.00%, China, FYE 2025.12.31, largest shareholder: SK hynix (Wuxi) Education Technology Co., Ltd. (100.00%) - SK hynix (Wuxi) Education Technology Co., Ltd. – Educational Entity, 100.00%, China, FYE 2025.12.31, largest shareholder: SK hynix (Wuxi) Investment Ltd. (100.00%) - SK hynix (Wuxi) Industry Development Ltd. – Overseas Hospital Asset Entity, 100.00%, China, FYE 2025.12.31, largest shareholder: SK hynix (Wuxi) Investment Ltd. (100.00%) - SK hynix (Wuxi) Investment Ltd. – Overseas Investment, 100.00%, China, FYE 2025.12.31, largest shareholder: SK hynix Semiconductor (China) Ltd. (100.00%) - SK hynix (Wuxi) Semiconductor Sales Ltd. – Semiconductor Sales, 100.00%, China, FYE 2025.12.31, largest shareholder: SK hynix Inc. (100.00%) - SK hynix America Inc. – Semiconductor Sales, 100.00%, USA, FYE 2025.12.31, largest shareholder: SK hynix Inc. (100.00%) - SK hynix Asia Pte. Ltd. – Semiconductor Sales, 100.00%, Singapore, FYE 2025.12.31, largest shareholder: SK hynix Inc. (100.00%) - SK hynix cleaning (Wuxi) Ltd. – Corporate Building Management, etc., 100.00%, China, FYE 2025.12.31, largest shareholder: SK hynix (Wuxi) Investment Ltd. (100.00%) - SK hynix Deutschland GmbH – Semiconductor Sales, 100.00%, Germany, FYE 2025.12.31, largest shareholder: SK hynix Inc. (100.00%) - SK hynix Happiness (Wuxi) Hospital Management Ltd. – Overseas Hospital Operating Entity, 70.00%, China, FYE 2025.12.31, largest shareholder: SK hynix (Wuxi) Investment Ltd. (70.00%) - SK hynix Japan Inc. – Semiconductor Sales, 100.00%, Japan, FYE 2025.12.31, largest shareholder: SK hynix Inc. (100.00%) - SK hynix memory solutions America, Inc. – R&D, 100.00%, USA, FYE 2025.12.31, largest shareholder: SK hynix America Inc. (100.00%) - SK hynix memory solutions Taiwan, Inc. – R&D, 100.00%, Taiwan, FYE 2025.12.31, largest shareholder: SK hynix Inc. (100.00%) - SK hynix NAND Product Solutions (Beijing) Co., Ltd. – Semiconductor Sales, 100.00%, China, FYE 2025.12.31, largest shareholder: SK hynix NAND Product Solutions Corp. (100.00%) - SK Hynix NAND Product Solutions (Shanghai) Co., Ltd. – Semiconductor R&D, 100.00%, China, FYE 2025.12.31, largest shareholder: SK hynix NAND Product Solutions Corp. (100.00%) - SK hynix NAND Product Solutions Asia Pacific LLC – Semiconductor Sales, 100.00%, USA, FYE 2025.12.31, largest shareholder: Solidigm Inc. (100.00%) - SK hynix NAND Product Solutions Canada Ltd. – Semiconductor R&D, 100.00%, Canada, FYE 2025.12.31, largest shareholder: Solidigm Inc. (100.00%) - SK hynix NAND Product Solutions Corp. – Semiconductor Sales and R&D, etc., 100.00%, USA, FYE 2025.12.31, largest shareholder: SK hynix Inc. (100.00%) - SK hynix NAND Product Solutions International LLC – Semiconductor Sales, 100.00%, USA, FYE 2025.12.31, largest shareholder: Solidigm Inc. (100.00%) - SK hynix NAND Product Solutions Israel Ltd. – Semiconductor Sales, 100.00%, Israel, FYE 2025.12.31, largest shareholder: SK hynix NAND Product Solutions Corp. (100.00%) - SK hynix NAND Product Solutions Malaysia Sdn. Bhd. – Semiconductor Sales, 100.00%, Malaysia, FYE 2025.12.31, largest shareholder: SK hynix NAND Product Solutions Corp. (100.00%) - SK hynix NAND Product Solutions Mexico, S. DE R.L. DE C.V. – Semiconductor R&D, 100.00%, Mexico, FYE 2025.12.31, largest shareholder: SK hynix NAND Product Solutions Corp. (100.00%) - SK hynix NAND Product Solutions Poland sp. Z o.o. – Semiconductor R&D, 100.00%, Poland, FYE 2025.12.31, largest shareholder: Solidigm Inc. (100.00%) - SK hynix NAND Product Solutions Singapore Pte. [Translation truncated]