Treasury share disposal: results report

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Treasury share disposal: results report 6.2 Woojin I&S Co., Ltd. Treasury share disposal: results report

To the Commissioner of the Financial Supervisory Service July 3, 2026

Company name: Woojin I&S Co., Ltd. Representative Director: Hong Kyung-mo Head office address: 166 Bangbae-ro, 3rd floor, Seocho-gu, Seoul (Bangbae-dong, Hanseung Building) (Tel) 02.535.7050 (Website) http://www.woojini.com Preparer: (Title) Head of Management Division (Tel) 02.535.7050

1. Name and address of the issuer (a) Name: Woojin I&S Co., Ltd. (b) Address: 166 Bangbae-ro, Hanseung Building 3rd floor, Seocho-gu, Seoul

2. Disposal report details (a) Date the material event report was filed: - (b) Disposal period: from July 3, 2026 to July 3, 2026 (c) Type and number of shares reported for disposal: Common shares 121,951 shares

3. Disposal details (Unit: KRW, shares) Date: July 3, 2026; Type: Common shares; Quantity ordered: 121,951; Quantity disposed: 121,951; Disposal price per share: 4,005; Total disposal value: 488,413,755; Disposal counterparty: Erum Technology Co., Ltd.; Brokerage firm order quantity: -; Financial investment company unique number: - Total: Quantity ordered: 121,951; Quantity disposed: 121,951; Disposal price per share: 4,005; Total disposal value: 488,413,755; -; -; -

* The "disposal price per share" above is the closing price on the disposal date. * The disposal was carried out by transferring the shares from the Company's securities account to the counterparty's account.

4. Whether the disposal report details match the actual disposal Planned shares for disposal (shares): Common shares 121,951, Other shares -; Total shares disposed (shares): Common shares 121,951, Other shares -; Match: Match; Reason for difference, if any: -

5. Holding status of treasury shares after disposal [As of July 3, 2026] (Unit: KRW thousand, shares, %) Share type: Common shares; Holdings under Article 165-3 of the Act (A): Quantity 669,970, Ratio 8.79%, Total value 5,075,533; Holdings under trust agreements etc. under Article 165-3 (B): Quantity -, Ratio -, Contract amount -; Total (A+B): Quantity 669,970, Ratio 8.79%, Amount 5,075,533 Total: Quantity 669,970, Ratio 8.79%, Total value 5,075,533; -; -; -; Quantity 669,970, Ratio 8.79%, Amount 5,075,533