[Amended] Change of largest shareholder

What happened

Company: Micro Digital Correction Report on Change of Largest Shareholder (dated 2026.09.17)

Correction Date: 2026-09-03

1. Disclosure Document Subject to Correction Change of Largest Shareholder

2. Submission Date of Disclosure Document Subject to Correction 2026-09-03

3. Reason for Correction Correction following confirmation of shareholder register as of September 11, 2026

4. Correction Details Correction Item | Before Correction | After Correction Change Details - Change After: Largest Shareholder etc. | Shares Owned (shares) | Ownership Ratio (%) | - | - | - Kim 00 | 923,957 | 4.89

6. Other Matters for Reference in Investment Decisions - This is a case of change of largest shareholder due to reverse repurchase of pledged shares under a stock pledge loan agreement. - The change date and change confirmation date above are the dates on which the securities company notified the company of stock transaction status. - As of the submission date of the largest shareholder change disclosure, the company was unable to identify details regarding the second-largest shareholder and plans to submit a corrected disclosure after further confirmation. - This is a case of change of largest shareholder due to reverse repurchase of pledged shares under a stock pledge loan agreement. - The change date above is the date on which the company received notification of stock transaction status from the securities company. - The change confirmation date above is the date of receipt of the shareholder register as of September 11, 2026. - The new largest shareholder was confirmed through the shareholder register as of September 11, 2026, received on September 17, 2026, showing that Kim 00 owns 923,957 shares (4.89%) and is currently the largest shareholder.

[Detailed Change Details] - Recording of New Largest Shareholder Details - Change of Largest Shareholder

1. Change Details Before Change - Largest Shareholder etc.: Kim Kyung-nam and 3 others | Shares Owned (shares): 4,850,908 | Ownership Ratio (%): 25.87 After Change - Largest Shareholder etc.: Kim 00 | Shares Owned (shares): 923,957 | Ownership Ratio (%): 4.89

2. Reason for Change Change of largest shareholder due to reverse repurchase - Whether change due to acquisition of forfeited shares: No - Whether mandatory holding period applies to acquired shares: No

3. Purpose of Equity Acquisition - Acquisition Funding Method: Own funds (KRW) - Borrowed funds (KRW) - Borrowing Source - Borrowing Period - ~ - Collateral Details - - Plan for Appointment/Dismissal of Officers After Acquisition: -

4. Change Date 2026-09-03

5. Change Confirmation Date 2026-09-03

6. Other Matters for Reference in Investment Decisions - This is a case of change of largest shareholder due to reverse repurchase of pledged shares under a stock pledge loan agreement. - The change date and change confirmation date above are the dates on which the company received notification of stock transaction status from the securities company. - The new largest shareholder was confirmed through the shareholder register as of September 11, 2026, received on September 17, 2026, showing that Kim 00 owns 923,957 shares (4.89%) and is currently the largest shareholder.

※ Related Disclosure

[Detailed Change Details] Name (Corporate Name, Partnership Name, Other Organization Name) | Relationship | Before Change - Shares (shares) | Ownership Ratio (%) | After Change - Shares (shares) | Ownership Ratio (%) | Remarks Kim Kyung-nam | Largest Shareholder Before Change | 3,731,108 | 19.83 | - | - | - Kim 00 | Largest Shareholder After Change | - | - | 923,957 | 4.89 | Based on Shareholder Register dated 2026.09.11