Executive Acquires 9,000 Shares via Stock Option Exercise — Hana Micron

Summary

Non-registered executive director Woong Hee Lee (Managing Director) reported a new ownership filing after acquiring 9,000 common shares through a stock option exercise on May 29, 2026. The exercise price was KRW 16,218 per share. Post-transaction, Lee holds 9,000 shares, representing 0.01% of the 66,478,426 total shares outstanding. This is Lee's initial ownership report, having been appointed to his position on March 1, 2022. The transaction size is immaterial relative to total shares outstanding.

Historical Impact

10 past Insider Ownership Change · ≈ Form 4 events at Hana Micron

Median +5d

+3.06%

Range

-6.66% to +4.48%

Positive outcomes

6/10

Filed	P₀	P₊₅	+5d
Jun 2, 2026	₩41,400	₩43,050	+3.99%
Jun 2, 2026	₩41,400	₩43,050

Full Translation

Report on Ownership Status of Specific Securities by Executives and Major Shareholders To: Securities and Futures Commission To: Korea Exchange Reporting Obligation Trigger Date: May 29, 2026 Report Reference Date: June 4, 2026 The reporting party hereby confirms that, as of the report reference date, the ownership status of specific securities has been accurately prepared in accordance with relevant laws and notation guidelines, and that there are no false statements or omissions of material matters. Reporting Party: Lee Woong Hee 1. Information on the Issuing Company - Company Name: Hana Micron Co., Ltd. - Corporate Classification: KOSDAQ-listed company - Company Code: 067310 - Total Issued Shares: 66,478,426 2. Information on the Reporting Party - Report Type: New - Reporter Category: Individual (Domestic) - Name (Korean): Lee Woong Hee - Name (Chinese/English): 李雄熙 (Woong Hee Lee) - Date of Birth: July 15, 1971 - Address: Seongjeo-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do - Relationship to Issuer: Executive (Non-registered) - Position: Managing Director (Sangmu) - Appointment Date: March 1, 2022 - Retirement Date: - - Major Shareholder: - - Contact Affiliation: Hana Micron Co., Ltd., Finance Group, Senior Manager Kim Jae-wook 3. Ownership Status of Specific Securities A. Number and Percentage of Specific Securities Owned - Previous Report: - (none) - Current Report (2026.06.04): 9,000 shares (0.01%); Common shares 9,000 (0.01%) - Change: +9,000 shares (+0.01%) B. Ownership Breakdown by Security Type - Common Stock: 9,000 shares - Warrants/Convertible Bonds/BWs/Profit-participating Bonds/Exchangeable Bonds/Depositary Receipts/Other: None - Total: 9,000 shares (0.01%) - Total Issued Shares (J): 66,478,426 - Ownership Ratio of Common Stock: 0.01% C. Detailed Change History - Reason for Change: Stock Option Exercise - Change Date: May 29, 2026 - Security Type: Common Stock - Shares Before Change: 0 - Increase: 9,000 - Shares After Change: 9,000 - Acquisition Price: Exercise price of KRW 16,218 - Trading Plan Report Date: -