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

What happened

Material Event Report (Decision to Redeem Own Convertible Bonds Before Maturity) 6.0, HLB bioStep Co., Ltd.

To: Financial Services Commission / Korea Exchange, Material Event Report / Exchange Disclosure Obligation Matter Date: 2026-07-14 Company name: HLB bioStep Co., Ltd. Representative Director: Baek Seong-jin Head office address: 38 Academy-ro 79beon-gil, Yeonsu-gu, Incheon Telephone: 032-833-8899 Website: http://www.hlbbiostep.com Person responsible for preparation: (Title) Director; (Name) Han Sang-ok; (Telephone) 070-7731-4270

Decision to Redeem Own Convertible Bonds Before Maturity

1. Type of bonds, Series: 4; Type: Unregistered, unsecured, privately placed convertible bonds 2. Bond issuance date: 2025-02-20 3. Method of bond issuance: Private placement 4. Bond maturity date: 2028-02-20 5. Total face value (electronically registered) of the bonds (KRW): 20,000,000,000 6. Face value (electronically registered) of the bonds subject to redemption (KRW): 9,750,000,000 7. Date of the redemption decision: 2026-07-14 8. Redemption amount, Amount (KRW): 10,039,043,000; Basis of calculation: Principal and interest payment (scheduled) date: 2026-08-13; Source of redemption funds: Company's own funds 9. Method of redemption: Over-the-counter purchase 10. Reason for redemption before maturity: Decision to redeem the bonds before maturity through consultation with the bondholders 11. Future handling plan: To be decided later through a board resolution 12. Matters concerning conversion, Conversion ratio (%): 100; Conversion price as of the reporting date (KRW/share): 7,990; Type of shares to be issued upon conversion: Registered common shares of HLB bioStep Co., Ltd.; Number of shares: 1,220,275; Ratio to total shares outstanding (%): 6.54; Conversion request period, Start date: 2026-02-20; End date: 2028-01-20 13. Face value (electronically registered) balance of the bonds after redemption (KRW): 10,000,000,000 14. Whether subject to filing with the Korea Fair Trade Commission: Not applicable 15. Other matters relevant to investment decisions: 1) The above "7. Date of the redemption decision" is the date of the board resolution. 2) The "amount" in the above "8. Redemption amount" is the sum of principal and interest, and the "payment (scheduled) date" is the final scheduled payment date for the bond redemption funds. The redemption funds will be paid in two installments, on July 14, 2026 and August 13, 2026, and for persons subject to withholding upon redemption, payment will be made after deducting the withholding tax on interest income in accordance with the relevant laws. Installment 1: Date 2026-07-14; Principal redeemed: 2,000,000,000; Interest: 56,632,000; Total payment: 2,056,632,000 Installment 2: Date 2026-08-13; Principal redeemed: 7,750,000,000; Interest: 232,411,000; Total payment: 7,982,411,000 Total: Principal 9,750,000,000; Interest 289,043,000; Total payment 10,039,043,000 3) The "conversion price as of the reporting date" in the above "12. Matters concerning conversion" reflects adjustments due to market-price changes after issuance and the adjustment following the stock consolidation on April 28, 2026. 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 shares outstanding, calculated on the assumption that the full amount of the convertible bonds to be redeemed this time is converted. 5) The "face value (electronically registered) balance of the bonds after redemption" in the above "13." was calculated reflecting a reduction of KRW 250,000,000 in face value due to a conversion request on February 23, 2026.

[Matters concerning the sellers] Seller: HLB Life Science Co., Ltd.; Relationship with the company or largest shareholder: Related party of the largest shareholder; Background of selection: Bondholder of these bonds; Transaction history and plans within 6 months before and after the redemption decision: Purchases and sales KRW 60,080,563; Receivables/payables transactions KRW 3,506,401; Other transactions KRW 2,045,787,797 (acquisition of securities of another company); Face value of bonds sold (KRW): 2,000,000,000; Note: None (-) Seller: Choi *-ok; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 200,000,000; Note: None (-) Seller: Korea Investment & Securities Co., Ltd. (in its capacity as trustee of ZEBRA Mezz-Public Offering Alpha General Private Investment Trust No. 3); Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 600,000,000; Note: None (-) Seller: KB Securities Co., Ltd. (in its capacity as trustee of ZEBRA Mezz-Public Offering Alpha General Private Investment Trust No. 4); Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 300,000,000; Note: None (-) Seller: Korea Investment & Securities Co., Ltd. (in its capacity as trustee of ZEBRA Mezz-Public Offering Alpha General Private Investment Trust No. 5); Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 900,000,000; Note: None (-) Seller: NH Investment & Securities Co., Ltd. (in its capacity as trustee of Le Future KOSDAQ Venture General Private Investment Trust No. 3); Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 400,000,000; Note: None (-) Seller: NH Investment & Securities Co., Ltd. (in its capacity as trustee of Fibonacci KOSDAQ Venture General Private Investment Trust No. 2); Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 400,000,000; Note: None (-) Seller: Mirae Asset Securities Co., Ltd. (in its capacity as trustee of KY KOSDAQ Venture General Private Investment Trust No. 4); Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 400,000,000; Note: None (-) Seller: NH Investment & Securities Co., Ltd. (in its capacity as trustee of Milestone KOSDAQ Venture General Private Investment Trust No. 5); Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 300,000,000; Note: None (-) Seller: Kim *-dae; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 1,000,000,000; Note: None (-) Seller: Lee *-hak; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 600,000,000; Note: None (-) Seller: Nam *-hee; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 100,000,000; Note: None (-) Seller: Kim *-gon; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 300,000,000; Note: None (-) Seller: Heo *-uk; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 500,000,000; Note: None (-) Seller: Kwon *-yeong; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 250,000,000; Note: None (-) Seller: Choi *-gyeong; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 500,000,000; Note: None (-) Seller: Nam *-je; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 200,000,000; Note: None (-) Seller: Gil *-hee; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 200,000,000; Note: None (-) Seller: Park *-pil; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 200,000,000; Note: None (-) Seller: Moon *-mi; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 200,000,000; Note: None (-) Seller: Kang *-tae; Relationship: None (-); Background of selection: Bondholder of these bonds; Transaction history and plans: None (-); Face value of bonds sold (KRW): 200,000,000; Note: None (-)

[Among the sellers, cases that include the company's largest shareholder or a related party thereof] Seller: HLB Life Science Co., Ltd.; Relationship with the largest shareholder: Related party of the largest shareholder; Shares held at the time of the convertible bond issuance, Quantity: None (-); Ratio (%): None (-); Shares to be issued upon conversion, Quantity: 250,312; Ratio (%): 10.00; Note: None (-)

[Among the sellers, cases that include a corporation or an organization] (1) Basic information on the corporation or organization Name: HLB Life Science Co., Ltd.; Number of investors (persons): 73,703; Representative director: Baek Yun-gi; Managing member: None (-); Largest shareholder (largest contributor): HLB Co., Ltd., Stake (%): 16.98 (2) Major financial matters of the corporation or organization for the most recent settlement period (Unit: KRW million) Fiscal year: 2025 settlement period, December; Total assets: 478,094; Revenue: 45,752; Total liabilities: 180,351; Net income/loss for the period: -99,944; Total equity: 297,742; External auditor: Samjong Accounting Corporation; Capital stock: 61,432; Audit opinion: Unqualified