Material event report (decision to redeem own convertible bonds early)

A later amendment corrects this filing, so the terms on this page may be out of date. See the latest version (2026-08-21) →

What happened

Material event report (decision to redeem own convertible bonds before maturity) 6.0, HLB Therapeutics Co., Ltd.

Material event report / Matter subject to Korea Exchange reporting obligation To the Financial Services Commission / Korea Exchange August 6, 2026 Company name: HLB Therapeutics Co., Ltd. Representative Director: An Ki-hong Head office address: 2nd floor, Unit 202, 6 Sanmaru-ro, Guri-si, Gyeonggi-do (Galmae-dong) (Tel) 031-786-7800 (Website) https://hlbtherapeutics.com Preparer in charge: (Title) Executive Director (Name) Han Young-in (Tel) 031-786-7800

Decision on pre-maturity acquisition of own convertible bonds

1. Type of bonds Round: 18 Type: Unregistered, unsecured, privately placed convertible bonds 2. Bond issuance date: February 28, 2025 3. Bond issuance method: Private placement 4. Bond maturity date: February 28, 2028 5. Total face (electronically registered) amount of the bonds (KRW): 5,000,000,000 6. Face (electronically registered) amount of bonds subject to acquisition (KRW): 5,000,000,000 7. Acquisition decision date: August 6, 2026 8. Acquisition amount Amount (KRW): 5,074,736,000 Basis of calculation: (Expected) principal and interest payment date: August 20, 2026 Source of acquisition funds: Offset against paid-in funds from a third-party-allotted capital increase 9. Acquisition method: Over-the-counter purchase 10. Reason for pre-maturity acquisition: Exercise of the bondholder's early redemption request right (put option) 11. Future handling plan: Deregistration from the Korea Securities Depository's registered bonds 12. Matters concerning conversion Conversion ratio (%): 100 Conversion price as of report date (KRW/share): 6,782 Type of shares to be issued upon conversion: HLB Therapeutics Co., Ltd. registered common shares Number of shares: 737,245 Ratio to total shares outstanding (%): 0.83 Conversion request period: Start date February 28, 2026; End date January 27, 2028 13. Remaining face (electronically registered) amount of the bonds after acquisition (KRW): 0 14. Whether subject to Fair Trade Commission reporting: Not applicable 15. Other matters for reference in investment decisions 1) The above "7. Acquisition decision date" is the board resolution date. 2) The "amount" in the above "8. Acquisition amount" is the sum of principal and interest, and the "(expected) payment date" is the early redemption date. 3) The "conversion price as of report date" in the above "12. Matters concerning conversion" is the amount reflecting adjustments due to market-price movements and free share distributions since issuance. 4) The "shares to be issued upon conversion" in the above "12. Matters concerning conversion" is the expected number of shares to be issued and the ratio to total issued shares, calculated on the assumption that the full amount of the convertible bonds to be acquired is converted.

[Matters concerning the seller] Seller name: HLB Co., Ltd. Relationship with the company or largest shareholder: Largest shareholder Basis of selection: Selected by the board to achieve management objectives Transaction details and plans within 6 months before and after the acquisition decision: - Face amount of bonds sold (KRW): 5,000,000,000 Remarks: -

[Where the seller includes the company's largest shareholder or a related party thereof] Seller name: HLB Co., Ltd. Relationship with largest shareholder: Itself Shares held at the time of convertible bond issuance: 6,696,809 shares, 7.96% Shares to be issued upon conversion: -, - Remarks: -