Change of largest shareholder

What happened

Hwaseung Industries / Change of Largest Shareholder / (2026.07.27)

Change of Largest Shareholder 1. Details of change Pre-change largest shareholder, etc.: Hyun Seok-ho and 1 other; shares held: 18,579,950; ownership: 33.59% Post-change largest shareholder, etc.: Onesky Co., Ltd. and 2 others; shares held: 18,579,950; ownership: 33.59%

2. Reason for change: change of largest shareholder from execution and closing of a share transfer agreement 3. Purpose of the equity acquisition: stabilizing the governance structure - Financing method: borrowings, etc. - Plans to appoint/dismiss officers after acquisition: none

4. Date of change: 2026-07-27 5. Date of confirmation of change: 2026-07-27

6. Other matters of reference for investment decisions - The before/after ownership percentages in "1. Details of change" are calculated based on the Company's total issued shares of 55,320,000 as of the disclosure date. - The dates in "4" and "5" are the date of share delivery (transfer). - Under the share transfer agreement, Onesky Co., Ltd. became the new largest shareholder; the former largest shareholder Hyun Seok-ho and his related party Hwaseung Corporation became related parties of the new largest shareholder, Onesky Co., Ltd. - The new largest shareholder Onesky Co., Ltd.'s financial position at the most recent fiscal year-end: (1) capital stock KRW 80,000,000; (2) total assets KRW 2,346,911,761; (3) total liabilities KRW 318,819,890; (4) total equity KRW 2,028,091,871.

Related disclosure: 2026-07-27, material management matter relevant to investment decisions.

[Details of the change] (name; relationship; shares/ownership before; shares/ownership after; note) Hyun Seok-ho: pre-change largest shareholder; before 15,080,152 (27.26%); after 2,395,956 (4.33%); related party of the post-change largest shareholder. Onesky Co., Ltd.: post-change largest shareholder; before -; after 12,684,196 (22.93%). Hwaseung Corporation: pre-change related party; before and after 3,499,798 (6.33%); related party of the post-change largest shareholder.