Change of largest shareholder

What happened

Telcon RF Pharmaceutical / Change of Largest Shareholder / (2026.07.14) Change of Largest Shareholder

Change of Largest Shareholder

1. Details of the change Largest shareholder before change: Newon Co., Ltd. and 2 others; Shares held: 1,518,291; Ownership ratio: 21.23% Largest shareholder after change: Evercore Investment Holdings Co., Ltd. and 2 others; Shares held: 3,848,207; Ownership ratio: 40.58%

2. Reason for the change: Change of largest shareholder due to payment for a third-party-allotment rights offering - Whether due to acquisition of forfeited shares: No - Whether the transferred shares are subject to a lock-up: No

3. Purpose of the equity acquisition: Participation in management and enhancement of corporate value - Method of funding the acquisition: Own funds (KRW) 4,999,999,736; Borrowed funds (KRW): -; Lender: -; Borrowing period: - to -; Collateral details: - - Plans to appoint/dismiss officers after the acquisition: Not applicable

4. Date of change: 2026-07-14 5. Date change was confirmed: 2026-07-14

6. Other material matters relevant to investment decisions - The new largest shareholder, Evercore Investment Holdings Co., Ltd., became the Company's largest shareholder today (July 14, 2026) upon completing payment for the third-party-allotment rights offering. - The post-change ownership ratio above and the post-change equity ratio below are calculated based on total issued shares of 9,482,269, reflecting the 2,329,916 new shares issued in this rights offering. - The above "date of change" and "date change was confirmed" are the payment date of the rights offering.

Related disclosures: -

[Detailed Change in Holdings] Name (corporation/association/other entity name) / Relationship / Before change / After change / Note Shares / Ownership ratio(%) Newon Co., Ltd.: Largest shareholder before change; 713,649 / 9.98 -> 713,649 / 7.53; Related party of the largest shareholder after the change L2L Holdings Co., Ltd.: Related party of the largest shareholder before the change; 144,642 / 2.02 -> 144,642 / 1.53; Related party of the largest shareholder after the change Evercore Investment Holdings Co., Ltd.: Largest shareholder after change; 660,000 / 9.23 -> 2,989,916 / 31.53; Related party of the largest shareholder before the change

[Matters Concerning the New Largest Shareholder (General Corporation)] 1. Basic information on the corporation Corporation name / Nationality / Address (head office) [disclosed only to town/township/district level] / Corporate registration number: Evercore Investment Holdings Co., Ltd. / Republic of Korea / Teheran-ro, Gangnam-gu, Seoul 110111-5965178 (the address and corporate registration number appear run together in the source table; as stated in the filing) Principal business: Management consulting - Largest shareholder/CEO/representative executive officer status and equity Category / Name / Shares held / Equity ratio(%): Largest shareholder Kim Ji-hun 100,000 / 100; CEO Kim Ji-hun 100,000 / 100 - Officer career history of the largest shareholder/CEO/representative executive officer Kim Ji-hun / Telcon RF Pharmaceutical Co., Ltd. / Listed (KOSDAQ) / - / CEO / Joined 2016-08-29 / Left - / Note - - History as largest shareholder of a listed company: - (none listed)

2. Key financial matters (Unit: KRW millions) Fiscal year: 2025; Settlement month: December Total assets: 22,731; Capital stock: 50; Total liabilities: 1,719; Revenue: -; Total equity: 21,012; Net income (loss): 213; External auditor: -; Suspension of business: No; Audit opinion: -; Closure of business: No

3. Relationship with the listed company - Relationship between the listed company and the largest shareholder (corporation): Largest shareholder - Relationship between the listed company's officers and the largest shareholder (corporation): Largest shareholder Evercore Investment Holdings Co., Ltd.: itself CEO Kim Ji-hun: CEO Director Kim Dong-hun: Internal director Director Choi Ji-han: - Director Kim Myeong-jae: - Outside director Kim Gyeong-han: - Outside director Seo Cheol-su: - Auditor Seo Jin-su: -

4. Transactions between the listed company and the largest shareholder (corporation) in the most recent 3 years (excluding routine transactions) Category / Transaction details: Current year -; Prior year -; Year before that -