Change of largest shareholder

What happened

Change of largest shareholder

1. Details of the change Largest shareholder before the change: Wi Jae-gon and 7 others; shares held (shares) 4,425,058; ownership ratio (%) 30.15 Largest shareholder after the change: Wi Ji-myeong and 8 others; shares held (shares) 4,425,058; ownership ratio (%) 30.15

2. Reason for the change: Change of largest shareholder due to a gift from/to the existing largest shareholder - Donor: Wi Jae-gon (1,467,726 shares) - Donee: Wi Ji-myeong (733,863 shares) - Donee: Wi Geuk-myeong (733,863 shares) - Whether the change is due to acquisition of forfeited shares: No - Whether the transferred shares are subject to a mandatory holding (lock-up) period: No

3. Purpose of the equity acquisition: - Method of financing the acquisition: Own funds (KRW) -; borrowed funds (KRW) -; lender -; borrowing period - to -; collateral details - Plans for appointment/dismissal of officers after the acquisition: -

4. Date of change: 2026-08-21

5. Date the change was confirmed: 2026-08-21

6. Other matters for reference in investment decisions - This is a disclosure of a change in the largest shareholder due to a gift from/to the existing largest shareholder; there is no change in the total number of shares held or ownership ratio of the largest shareholder group. - The ownership ratios (%) stated in "1. Details of the change" above and in [Details of the Change] below are calculated based on total issued shares of 14,677,249 shares. - "4. Date of change" and "5. Date the change was confirmed" above are the date of the gift.

Related disclosures: 2026-07-21 Report on trading plan for specified securities etc. by officers and major shareholders 2026-07-21 Report on trading plan for specified securities etc. by officers and major shareholders

[Details of the Change] Name (corporation/association/other entity name) | Relationship | Before the change: shares (shares) / ownership ratio (%) | After the change: shares (shares) / ownership ratio (%) | Remarks Wi Jae-gon | Largest shareholder before the change | 2,756,218 / 18.78 | 1,288,492 / 8.78 | Donor (related party of the largest shareholder after the change) Wi Ji-myeong | Largest shareholder after the change | 781,600 / 5.33 | 1,515,463 / 10.33 | Donee (the largest shareholder after the change, himself) Wi Geuk-myeong | Related party of the largest shareholder after the change | 0 / 0 | 733,863 / 5.00 | Donee (related party of the largest shareholder after the change) Avatech Co., Ltd. | Related party of the largest shareholder before the change | 730,000 / 4.97 | 730,000 / 4.97 | Related party of the largest shareholder before and after the change Daemyung ENG Co., Ltd. | Related party of the largest shareholder before the change | 61,457 / 0.42 | 61,457 / 0.42 | Related party of the largest shareholder before and after the change Kim Gwang-hyeon | Related party of the largest shareholder before the change | 66,715 / 0.45 | 66,715 / 0.45 | Related party of the largest shareholder before and after the change Kim Jae-ho | Related party of the largest shareholder before the change | 23,068 / 0.16 | 23,068 / 0.16 | Related party of the largest shareholder before and after the change An Byeong-cheol | Related party of the largest shareholder before the change | 4,000 / 0.03 | 4,000 / 0.03 | Related party of the largest shareholder before and after the change Park Ji-yeon | Related party of the largest shareholder before the change | 2,000 / 0.01 | 2,000 / 0.01 | Related party of the largest shareholder before and after the change