President Kim Ju-seon Sells 1,000 Common Shares at KRW 2,328,500 — SK Hynix

Summary

Non-registered executive (President) Kim Ju-seon reported an open-market sale of 1,000 common shares on May 29, 2026 at KRW 2,328,500 per share, reducing his holdings from 3,881 to 2,881 shares. The transaction value is approximately KRW 2.33 billion. His ownership ratio remains effectively 0.00% of the 712,702,365 total shares outstanding, so the sale has no governance implications. The filing is a routine insider ownership change report to the FSC and KRX.

Historical Impact

10 past Insider Ownership Change · ≈ Form 4 events at SK Hynix

Median +5d

+5.08%

Range

-13.16% to +23.42%

Positive outcomes

8/10

Filed	P₀	P₊₅	+5d
Jul 1, 2026	₩2,560,000	₩2,223,000	-13.16%
Jul 1, 2026	₩2,560,000	₩2,223,000	-13.16%

Full Translation

Report on Ownership of Specified Securities by Executives and Major Shareholders Filer: SK hynix Inc. Report date: May 29, 2026 To: Securities and Futures Commission To: Korea Exchange Date of reporting obligation: May 29, 2026 Report preparation reference date: June 9, 2026 The filer hereby confirms that the ownership status of specified securities as of the report preparation reference date has been accurately prepared in accordance with the relevant laws and instructions, and that there is no false statement or omission of material matters. Filer: Kim Ju-seon 1. Issuer Information - Company name: SK hynix Inc. - Corporate classification: KOSPI-listed corporation - Company code: 000660 - Total issued shares: 712,702,365 2. Filer Information - Report type: Change - Filer category: Individual (domestic) - Name (Korean): 김주선 - Name (English): KIM JU SEON - Date of birth: 660601 - Address: Pangyoyeok-ro, Bundang-gu, Seongnam-si, Gyeonggi-do - Relationship with issuer: Executive (non-registered) - Title: President - Date of appointment: January 1, 2015 - Date of resignation: - - Major shareholder: - - Contact: IR department, SK hynix Inc.; Contact person: Choi Seo-yoon (TL); Phone: 031-80******* 3. Ownership Status of Specified Securities A. Number and ratio of specified securities held - Previous report (Feb 6, 2026): 3,881 shares (0.00%) - This report (Jun 9, 2026): 2,881 shares (0.00%) - Change: -1,000 shares (0.00%) B. Breakdown by type of specified securities - Common stock: 2,881 shares - Warrants, convertible bonds, BWs, profit-participating bonds, exchangeable bonds, depositary receipts, others: none - Total: 2,881 shares (0.00%) - Total issued shares: 712,702,365 - Ownership ratio of common stock: 0.00% C. Detailed change history - Reason: On-market sale (-) - Transaction date: May 29, 2026 - Type: Common stock - Before: 3,881 shares → Change: -1,000 → After: 2,881 shares - Acquisition/disposal unit price: KRW 2,328,500 - Trading plan report date: - * For securities-market transactions, the settlement date of the contract applies. ** For non-stock securities, this refers to the exercise (conversion/exchange) price or the per-share trading price of shares acquired/disposed through exercise of rights.