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

What happened

Material Event Report (Decision to Redeem Own Convertible Bonds Prior to Maturity) 6.0

KS Industry Co., Ltd.

Material Event Report / Matter Subject to Exchange Reporting Obligation To the Financial Services Commission / Korea Exchange August 14, 2026

Company name: KS Industry Co., Ltd. CEO: Song Byeong-gwon Head office address: 223, Seokgyocheon-gil, Gunbuk-myeon, Haman-gun, Gyeongsangnam-do (Phone) 055-992-9831 (Website) http://ks-industry.co.kr Preparer: (Title) Executive Vice President; (Name) Kim Jung-il; (Phone) 055-992-9831

Decision to Redeem Own Convertible Bonds Prior to Maturity

1. Type of bonds Series: 18 Type: Unregistered (bearer-form), interest-bearing, unsecured, privately placed convertible bonds

2. Bond issuance date: March 24, 2026

3. Bond issuance method: Private placement

4. Bond maturity date: March 24, 2031

5. Total face (electronically registered) amount of bonds (KRW): 10,100,000,000

6. Face (electronically registered) amount of bonds to be acquired (KRW): 4,000,000,000

7. Acquisition decision date: August 14, 2026

8. Acquisition amount Amount (KRW): 4,000,000,000 Basis of calculation: Partial repayment of principal Payment (scheduled) date: August 14, 2026 Source of acquisition funds: Own funds

9. Acquisition method: Over-the-counter purchase

10. Reason for acquisition prior to maturity: Bondholders' early-redemption request following loss of maturity benefit due to a disclaimer of opinion on the half-year review

11. Future treatment plan: Retirement or re-sale to be determined later

12. Matters concerning conversion Conversion ratio (%): 100 Conversion price as of the reporting date (KRW/share): 1,105 Type of shares to be issued upon conversion: KS Industry Co., Ltd. registered common shares Number of shares: 9,140,271 Ratio to total shares outstanding (%): 22.64 Conversion request period: Start date March 24, 2027; End date February 23, 2031

13. Remaining face (electronically registered) amount of bonds after acquisition (KRW): 6,100,000,000

14. Subject to Fair Trade Commission reporting: Not applicable

15. Other matters for investment reference - The above acquisition of bonds is pursuant to bondholders' early-redemption request following loss of maturity benefit due to a disclaimer of opinion on the half-year review. - Item 7 above, "Acquisition decision date," is the date on which the Company paid the acquisition amount. - Item 8 above, "Acquisition amount," is a partial amount of the principal. - Item 12 above, "Matters concerning conversion," is as of the issuance date of the bonds (before the capital reduction).

[Matters Concerning the Seller] Seller name: Marine Robotics No.1 Investment Partnership; Relationship with the Company or largest shareholder: -; Basis of selection: -; Transaction history and plans within 6 months before/after the acquisition decision: -; Face amount of bonds sold (KRW): 4,000,000,000; Remarks: -

[Where the Sellers Include a Corporation or Entity] (1) Basic information on the corporation or entity Name: Urban Holdings Co., Ltd.; Number of investors (persons): 1; Representative director (representative partner) - Name: Jo Su-bin, Share (%): 100; Managing partner (managing partner) - Name: -, Share (%): -; Largest shareholder (largest investor) - Name: Jo Su-bin, Share (%): 100 (2) Key financial information for the most recent fiscal year of the corporation or entity (Unit: KRW million) Fiscal year: -; Settlement month: -; Total assets: -; Revenue: -; Total liabilities: -; Net income (loss): -; Total equity: -; External auditor: -; Capital: -; Audit opinion: - * This is a newly established corporation.