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

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

KS Industry Co., Ltd.

Material Event Report / Exchange Reporting Obligation To the Financial Services Commission / Korea Exchange August 28, 2026

Company name: KS Industry Co., Ltd. Representative Director: 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 Before Maturity

1. Type of bonds: Series 18, Unregistered interest-bearing unsecured private-placement convertible bonds 2. Bond issuance date: 2026-03-24 3. Bond issuance method: Private placement 4. Bond maturity date: 2031-03-24 5. Total face value (electronically registered) of the bonds (KRW): 10,100,000,000 6. Face value (electronically registered) of bonds subject to acquisition (KRW): 3,100,000,000 7. Date of acquisition decision: 2026-08-28 8. Acquisition amount: Amount (KRW) 3,100,000,000; Basis of calculation: Full remaining principal; Payment date (scheduled): 2026-08-28; Source of acquisition funds: Own funds 9. Acquisition method: Over-the-counter purchase 10. Reason for acquisition before maturity: Bondholder's early-redemption request following loss of the benefit of time due to a disclaimer of opinion on the semiannual review 11. Future handling plan: To be decided later whether to retire or resell the bonds 12. Matters relating to conversion: Conversion ratio (%) 100; Conversion price as of the reporting date (KRW/share) 4,420; Type of shares to be issued upon conversion: KS Industry Co., Ltd. registered common shares; Number of shares: Not applicable; Ratio to total shares outstanding (%): Not applicable; Conversion request period: from 2027-03-24 to 2031-02-23 13. Remaining face value (electronically registered) of the bonds after acquisition (KRW): - 14. Whether subject to reporting to the Fair Trade Commission: Not applicable 15. Other matters for reference in investment decisions: - The above bond acquisition arises from a bondholder's early-redemption request following loss of the benefit of time due to a disclaimer of opinion on the semiannual review. - The face value of the Series 18 unregistered interest-bearing unsecured private-placement convertible bonds acquired by the Company as described above is out of a total issued amount of KRW 10,100,000,000. - Item 7 above ("Date of acquisition decision") is the date on which the Company paid the acquisition amount. - Item 8 above ("Acquisition amount") is the remaining principal amount. - The "conversion price as of the reporting date" in Item 12 above was calculated so as to produce the same effect the bondholder would have had if the conversion right had been exercised and the bonds fully converted into shares immediately before the capital reduction. - The "number of shares convertible" in Item 12 above is the number of shares corresponding to the calculated conversion price. - The ratio under "shares to be issued upon conversion" in Item 12 above is based on 9,910,487 shares issued after the capital reduction.

[Matters Concerning the Seller] Seller name; Relationship with the company or largest shareholder; Selection process; Transaction history and plans within 6 months before/after the acquisition decision; Face value of bonds sold (KRW); Note Marine Robotics No.1 Investment Association: Relationship - Not applicable; Selection process - Not applicable; Transaction history/plans - Not applicable; Face value of bonds sold (KRW) 3,100,000,000; Note - Not applicable

[Where the Seller Includes a Corporation or Organization] (1) Basic information on the corporation or organization: Name Urban Holdings Co., Ltd.; Number of investors 1; Representative Director (representative partner) Cho Su-bin 100%; Operating partner (managing partner) - Not applicable; Largest shareholder (largest investor) Cho Su-bin 100% (2) Key financial matters for the most recent fiscal year (unit: KRW million): Fiscal year - Not applicable; Settlement period - Not applicable; Total assets - Not applicable; Revenue - Not applicable; Total liabilities - Not applicable; Net income (loss) - Not applicable; Total equity - Not applicable; External auditor - Not applicable; Capital stock - Not applicable; Audit opinion - Not applicable * Note: This is a newly established corporation.