Change of largest shareholder

What happened

Kistron / Change of Largest Shareholder / (2026.08.11) Change of Largest Shareholder

Change of Largest Shareholder

1. Change details - Largest shareholder, etc. before change: Hong Yeong-cheol and 7 others; Shares held: 11,432,010; Ownership ratio (%): 64.05 - Largest shareholder, etc. after change: Kistron Holdings Co., Ltd. and 5 others; Shares held: 11,432,010; Ownership ratio (%): 64.05

2. Reason for change: Change of largest shareholder due to an over-the-counter trade among related parties - Whether due to acquisition of forfeited shares: No - Whether the transferred shares are subject to a mandatory holding period: No

3. Purpose of equity acquisition: Management participation - Method of financing the acquisition: Own funds (KRW) -; Borrowings (KRW) -; Lender -; Borrowing period - to -; Collateral details - - Plan for appointment/dismissal of executives after the acquisition: Not applicable

4. Change date: 2026-08-10

5. Change confirmation date: 2026-08-11

6. Other matters material to investment decisions - The ownership ratios, etc. in "1. Change details" above were calculated based on the company's total issued shares of 17,848,110. - The "4. Change date" above is the share trading date.

Related disclosures: 2026-08-07 Report on Substantial Holding of Shares, etc. (General) 2026-06-26 Report on Trading Plan for Specific Securities, etc. by Executives and Major Shareholders 2026-06-26 Report on Trading Plan for Specific Securities, etc. by Executives and Major Shareholders 2026-06-26 Report on Trading Plan for Specific Securities, etc. by Executives and Major Shareholders 2026-06-26 Report on Trading Plan for Specific Securities, etc. by Executives and Major Shareholders 2026-06-26 Report on Trading Plan for Specific Securities, etc. by Executives and Major Shareholders

[Details of Change] Name (corporation/association/other organization name): Hong Yeong-cheol; Relationship: Largest shareholder before the change Before change: Shares 2,626,764; Ratio 14.72% After change: Shares 2,626,764; Ratio 14.72% Note: -

Name: Kistron Holdings Co., Ltd.; Relationship: Largest shareholder after the change Before change: Shares 2,026,880; Ratio 11.36% After change: Shares 3,549,289; Ratio 19.89% Note: -

Name: Kiswire Holdings Co., Ltd.; Relationship: Related party of the largest shareholder before the change Before change: Shares 940,520; Ratio 5.27% After change: Shares -; Ratio - Note: -

Name: Hong Hui-yeon; Relationship: Related party of the largest shareholder after the change Before change: Shares 2,142,266; Ratio 12.00% After change: Shares 3,082,786; Ratio 17.27% Note: -

Name: Hongdeok Industrial Co., Ltd.; Relationship: Related party of the largest shareholder before the change Before change: Shares 1,066,625; Ratio 5.98% After change: Shares -; Ratio - Note: -

Name: Hong Seok-pyo; Relationship: Related party of the largest shareholder before the change Before change: Shares 2,240,595; Ratio 12.55% After change: Shares 1,784,811; Ratio 10.00% Note: -

Name: Shin Jae-myeong; Relationship: Related party of the largest shareholder after the change Before change: Shares 315,460; Ratio 1.77% After change: Shares 315,460; Ratio 1.77% Note: -

Name: Shin Ga-yun; Relationship: Related party of the largest shareholder after the change Before change: Shares 72,900; Ratio 0.41% After change: Shares 72,900; Ratio 0.41% Note: -

[Matters Concerning the New Largest Shareholder (Where It Is a General Corporation)]

1. Basic information on the corporation Corporation name: Kistron Holdings Co., Ltd. Nationality: Republic of Korea Address (head office location) [stated only to the township/district/neighborhood level]: San-dan-ro, Danwon-gu, Ansan-si, Gyeonggi-do Corporate registration number: 180111-1524180 Main business: Services, real estate business

- Status and shareholding information of the largest shareholder, representative director, and representative executive officer Category: Largest shareholder; Name: Hong Hui-yeon; Shares held: 6,000,000; Ownership ratio (%): 60 Category: Representative director; Name: Hong Hui-yeon; Shares held: 6,000,000; Ownership ratio (%): 60

- Executive career of the largest shareholder, representative director, and representative executive officer Name: Hong Hui-yeon; Company name: Kistron Holdings Co., Ltd.; Listing status: Unlisted; Delisting date (for a delisted corporation): -; Position: Representative Director; Date joined: 2023-09-01; Date left: -; Note: -

- History as largest shareholder of a listed corporation, for the largest shareholder, representative director, and representative executive officer Name: Hong Hui-yeon; Company name: Kistron Holdings Co., Ltd.; Listing status: -; Delisting date (for a delisted corporation): -; Period as largest shareholder - Start: 2023-09-01; End: -; Note: -

2. Key financial information, etc. (Unit: KRW million) Applicable fiscal year: 2025, 3rd fiscal period Total assets: 53,535 Capital: 50,000 Total liabilities: 1,031 Revenue: 965 Total equity: 52,504 Net income: 930 External auditor: Shinhan Accounting Corporation Business suspended: No Audit opinion: Unqualified Business closed: No

3. Relationship with the relevant listed corporation - Relationship between the listed corporation and the largest shareholder (corporation): Affiliate - Relationship between the listed corporation's executives, etc. and the largest shareholder (corporation): Name -; Relationship with the largest shareholder (corporation) -

4. Transactions between the relevant listed corporation and the largest shareholder (corporation) over the most recent 3 years (excluding ordinary transactions) Category: Transaction details Current year: - Previous year: - Year before that: -