Change of largest shareholder

What happened

Fine Semitech/Change of Largest Shareholder/(2026.10.01) Change of Largest Shareholder

Change of Largest Shareholder 1. Change Details Previous largest shareholder, etc.: Jang Myeong-sik and 2 others Shares held: 5,385,949 Ownership (%): 24.88 New largest shareholder, etc.: CM Technology and 3 others Shares held: 5,385,949 Ownership (%): 24.88 2. Reason for Change: Change of largest shareholder due to a gift by the existing largest shareholder - Donor: Jang Myeong-sik (1,748,334 shares) - Donee: Jang Gyeong-bin (874,167 shares) - Donee: Jang Gyeong-rok (874,167 shares) - Change due to acquisition of forfeited shares: No - Mandatory holding period for transferred shares: No 3. Purpose of Equity Acquisition: - - Method of funding acquisition: Own funds (KRW): -; Borrowed funds (KRW): -; Lender: -; Borrowing period: - ~ -; Collateral details: - - Plan to appoint/dismiss officers after acquisition: Director appointment planned via an extraordinary general meeting of shareholders 4. Change Date: 2026-10-01 5. Change Confirmation Date: 2026-10-01 6. Other Matters for Investment Reference - This disclosure concerns a change of largest shareholder resulting from a gift by the existing largest shareholder; there is no change in the number of shares held or ownership ratio of the largest shareholder group. - The ownership ratios (%) in "1. Change Details" above and "Detailed Change Information" below are calculated based on 21,649,789 total issued shares. - "4. Change Date" and "5. Change Confirmation Date" above are the date of the gift. ※ Related Disclosures 2026-08-31 Report on trading plan for specified securities, etc. by officers and major shareholders 2026-08-31 Report on trading plan for specified securities, etc. by officers and major shareholders 2026-08-31 Report on trading plan for specified securities, etc. by officers and major shareholders

[Detailed Change Information] Name | Relationship | Before Change (Shares / Ownership %) | After Change (Shares / Ownership %) | Remarks Jang Myeong-sik: Previous largest shareholder; Before: 3,496,669 shares, 16.15%; After: 1,748,335 shares, 8.08%; Remarks: Donor; related party of the new largest shareholder after the change CM Technology: New largest shareholder; Before: 1,875,614 shares, 8.66%; After: 1,875,614 shares, 8.66%; Remarks: New largest shareholder Jang Gyeong-bin: Related party of the previous largest shareholder; Before: 13,666 shares, 0.06%; After: 887,833 shares, 4.10%; Remarks: Donee; related party of the largest shareholder before/after the change Jang Gyeong-rok: Related party of the new largest shareholder; Before: 0 shares, 0%; After: 874,167 shares, 4.04%; Remarks: Donee; related party of the new largest shareholder after the change

[Matters Concerning the New Largest Shareholder After Change (general corporation)] 1. Basic Information of the Corporation Corporate Name: CM Technology Nationality: Republic of Korea Address (head office location): Samseong-dong, Gangnam-gu, Seoul Corporate Registration Number: 131111-0211323 Main Business: Other financial investment services - Status of Largest Shareholder/CEO/Representative Executive Officer and Equity Information Category: Largest shareholder; Name: Kim Hye-sil; Shares Held: 31,500; Ownership (%): 35 Category: CEO; Name: Jang Gyeong-rok; Shares Held: 18,000; Ownership (%): 20 - Officer Career History of Largest Shareholder/CEO/Representative Executive Officer Name: Kim Hye-sil; Company: CM Technology; Listed Status: Unlisted; Delisting Date: -; Position: CEO; Joining Date: 2008-06-16; Resignation Date: -; Remarks: Co-representative CEO Name: Jang Gyeong-rok; Company: CM Technology; Listed Status: Unlisted; Delisting Date: -; Position: CEO; Joining Date: 2013-07-01; Resignation Date: -; Remarks: Also serves as a non-registered officer at Fine Semitech - History as Largest Shareholder of a Listed Company: - 2. Key Financial Matters, etc. (Unit: KRW million) Fiscal Year: 2025, Settlement Month: December Total Assets: 166,401 Capital Stock: 900 Total Liabilities: 69,636 Revenue: 14,946 Total Equity: 96,765 Net Income: 778 External Auditor: Hanul Accounting Corporation Suspension of Business: No Audit Opinion: Unqualified Closure of Business: No 3. Relationship with the Listed Company - Relationship between the listed company and the largest shareholder (corporation): Affiliated company - Relationship between officers of the listed company and the largest shareholder (corporation): CEO Jang Gyeong-bin: related party Director Jang Myeong-sik: related party Other officer Jang Gyeong-rok: related party 4. Transaction History Between the Listed Company and the Largest Shareholder (Corporation) Over the Last 3 Years (excluding ordinary transactions) Category: Transaction details; Current year: -; Prior year: -; Year before prior year: -