Rights offering (paid-in capital increase) decision (subsidiary)

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Duksanhimetalco / Rights offering decision (subsidiary's material management matter) / (2026.07.24) Rights offering decision (subsidiary's material management matter)

Rights offering decision (subsidiary's material management matter) Report on material management matters of subsidiary Duksan Navcours Co., Ltd.

1. Type and number of new shares Common shares (shares): 3,000,000 Class shares (shares): -

2. Par value per share (KRW): 500

3. Total shares issued before the capital increase Common shares (shares): 15,795,396 Class shares (shares): -

4. Purpose of capital raising Facility funds (KRW): 20,250,000,000 Business acquisition funds (KRW): - Working capital (KRW): 16,419,204,526 Debt repayment funds (KRW): - Funds to acquire securities of another company (KRW): - Other funds (KRW): 1,530,793,474

5. Capital increase method: General public offering [For a general public offering]

6. New share issue price Common shares (KRW): 12,400 Class shares (KRW): -

7. Discount or premium rate to the base price (%): - 8. Preferential allotment ratio for employee stock ownership association members (%): -

9. Expected subscription date Employee stock ownership association: Start date -; End date - General public: Start date 2026-09-16; End date 2026-09-17

10. Payment date: 2026-09-21 11. Dividend record start date for new shares: 2026-01-01 12. Expected date of delivery of new share certificates: - 13. Lead underwriter (if not a direct offering): Daishin Securities 14. Board resolution date (decision date): 2026-07-23 Outside director attendance: Attended (persons) 1; Did not attend (persons) - Auditor (audit committee members who are not outside directors) attendance: Attended

15. Whether subject to securities registration statement filing: Yes 16. Reason for exemption from filing, if applicable: - 17. Whether subject to Fair Trade Commission reporting: No

18. Other matters for reference in investment decisions - This is the KOSDAQ listing public offering of Duksan Navcours Co., Ltd.; the desired offering price range for the new shares is KRW 12,400 to KRW 14,600 and will be determined based on future demand forecasting (book-building). - The above issue price states the lowest value within the desired offering price range and is subject to an amendment disclosure once finally determined.

※ Related disclosures: -

[Matters relating to the subsidiary] Subsidiary name: Duksan Navcours Co., Ltd. English name: DUKSAN NAVCOURS CO., LTD. Representative: Hwang Tae-ho Main business: Sale of defense industry, aerospace, and navigation infrastructure-related products and components Whether a major subsidiary: Applicable Subsidiary's total assets (KRW): 52,877,636,682 Controlling company's consolidated total assets (KRW): 658,964,267,763 Ratio to controlling company's consolidated total assets (%): 8.02