[Amended] Material event report (rights offering)

What happened

Material Event Report (Rights Offering Decision) Amicogen Co., Ltd. Amendment Report August 4, 2026

1. Disclosure document subject to amendment: Material Event Report 2. Date of initial submission of the disclosure document subject to amendment: June 22, 2026 3. Amendment details

Item: Rights Offering Decision Reason for amendment: Withdrawal of rights offering due to non-payment by the allottee Before amendment: Rights Offering Decision After amendment: Withdrawal of Rights Offering

Material Event Report / Matter Subject to Mandatory Exchange Disclosure To: Financial Services Commission / Korea Exchange June 22, 2026

Company name: Amicogen Co., Ltd. Representative Director: Piao Zhe Head office address: 14-10, Wolasan-ro 950beon-gil, Munsan-eup, Jinju-si, Gyeongsangnam-do Phone: 055-759-6161 Website: http://www.amicogen.com Preparer: (Title) Head of Finance Management Office (Director) (Name) Kim Jong-hun (Phone) 070-4270-0080

Rights Offering Decision

1. Type and number of new shares: Common shares (shares) -; Other shares (shares) -

2. Par value per share (KRW): -

3. Total shares issued before the offering: Common shares (shares) -; Other shares (shares) -

4. Purpose of capital raising: Facility funds (KRW) -; Business acquisition funds (KRW) -; Working capital (KRW) -; Debt repayment funds (KRW) -; Funds to acquire securities of other companies (KRW) -; Other funds (KRW) -

5. Method of capital increase: Third-party allotment

※ Matters concerning other shares: Basis in the articles of incorporation -; Details of the shares -; Other -

6. New share issue price: Common shares (KRW) -; Other shares (KRW) -

7. Base share price: Common shares (KRW) -; Other shares (KRW) -

7-1. Method of calculating the base share price: Weighted arithmetic average closing price from the 3rd to the 5th trading day before the subscription date

7-2. Discount or premium rate on the base share price (%): -

7-3. Basis for the discount (premium) rate: Pursuant to Article 5-18 (Determination of Issue Price for Rights Offerings) of the "Regulation on Issuance and Disclosure of Securities, etc.," in the case of a third-party rights offering, the issue price is calculated by applying a discount rate of up to 10% to the base share price.

8. Basis in the articles of incorporation for the third-party allotment: -

9. Payment date: -

10. Dividend record date for new shares: -

11. Expected date of delivery of new share certificates: -

12. Expected listing date of new shares: -

13. Whether a backdoor listing occurred due to an in-kind contribution: No - Whether there was an in-kind contribution: No - Whether the in-kind contribution property includes shares of an unlisted company: Not applicable - In-kind contribution value of shares to be paid in: In-kind contribution value (KRW) -; percentage of the Company's total assets in the most recent fiscal year (%) -; number of shares to be paid in -

14. Whether backdoor listing requirements are met: Not applicable

15. Date of board resolution (decision date): - - Independent (outside) director* attendance: Present (persons) -; Absent (persons) - - Attendance of auditor (audit committee): -

16. Whether subject to filing of a securities registration statement: No

17. Reason for exemption from filing: One-year mandatory holding (resale restriction) for all shares

18. Whether subject to a prohibited short-selling period for subscription: No; Start date -; End date -

19. Whether subject to Fair Trade Commission reporting: Not applicable * Applies to independent directors for listed companies and outside directors for unlisted companies

20. Other material matters relevant to investment decisions 1) At its board meeting of June 22, 2026, the Company decided on a third-party rights offering for the purpose of raising working capital, with the subscription payment date set as July 15, 2026, to be received at Hana Bank's Jinju Branch. However, as the designated allottee, YK Bionova Holdings Co., Ltd., did not pay the subscription funds, the Company has unavoidably decided to withdraw this rights offering. This disclosure relates to the Material Event Report (Rights Offering Decision) originally decided by the Company's board on June 21, 2024 (as stated in the filing), and the rights offering decision is withdrawn by mutual agreement with the third-party allottee. ▶ When using the weighted arithmetic average price for the 3rd to 5th trading day before the subscription date as the base share price, the following table is added (Unit: shares, KRW): Date 2026-06-15 (5th trading day before subscription): trading volume -, trading value - Date 2026-06-16 (4th trading day before subscription): trading volume -, trading value - Date 2026-06-17 (3rd trading day before subscription): trading volume -, trading value - Total: trading volume -, trading value - Base share price (weighted arithmetic average price): - Discount or premium rate (%): - Issue price: -

【Basis, Purpose, etc. of the Third-Party Allotment】 Basis in the articles of incorporation: -; Purpose of the third-party rights offering: -

【Specific Purpose of Use of Funds Raised Through the Third-Party Allotment】 【For working capital/other funds】 (Unit: KRW million) Use of funds: Working capital; Details*: -; Amount planned to be used by year: 2026 -, 2027 -, 2028 onward -, Total -

【Selection Process, Transaction History, Allotment Details, etc. by Third-Party Allottee】 Third-party allottee: -; Relationship with the Company or largest shareholder: -; Selection process: -; Transaction history and plans within 6 months before and after the capital-increase decision: -; Number of shares allotted (shares): -; Note: -