Treasury share acquisition: results report

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Treasury share acquisition: results report 6.0 Chungdamglobal Co., Ltd. Treasury share acquisition: results report

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

Company name: Chungdamglobal Co., Ltd. Representative Director: Choi Seok-ju Head office address: 735 Eonju-ro, 16F, Gangnam-gu, Seoul (Tel) 02-6949-1496 (Website) http://www.chungdamgroup.com Preparer: (Title) Senior Vice President (Name) Koo Sang-mo (Tel) 02-6949-1496

1. Name and address of the issuer (a) Name: Chungdamglobal Co., Ltd. (b) Address: 735 Eonju-ro, 16F, Gangnam-gu, Seoul

2. Acquisition report details (a) Date the material event report was filed: June 10, 2026 (b) Acquisition period: from June 11, 2026 to July 1, 2026

3. Acquisition details (Unit: KRW, shares) Date: June 11, 2026; Common shares; Order quantity 20,000; Quantity acquired 20,000; Acquisition price per share 4,007; Total acquisition value 80,148,130; KB Securities; 00164876 Date: June 12, 2026; Common shares; 50,000; 50,000; 4,456; 222,796,950; KB Securities; 00164876 Date: June 15, 2026; Common shares; 50,000; 50,000; 4,479; 223,958,435; KB Securities; 00164876 Date: June 16, 2026; Common shares; 50,000; 41,238; 4,384; 180,784,270; KB Securities; 00164876 Date: June 17, 2026; Common shares; 50,000; 50,000; 4,613; 230,658,370; KB Securities; 00164876 Date: June 18, 2026; Common shares; 50,000; 19,304; 4,548; 87,786,680; KB Securities; 00164876 Date: June 19, 2026; Common shares; 50,000; 50,000; 4,371; 218,560,895; KB Securities; 00164876 Date: June 22, 2026; Common shares; 50,000; 50,000; 4,360; 217,987,715; KB Securities; 00164876 Date: June 23, 2026; Common shares; 50,000; 50,000; 4,359; 217,971,510; KB Securities; 00164876 Date: June 24, 2026; Common shares; 50,000; 47,569; 4,105; 195,275,355; KB Securities; 00164876 Date: June 25, 2026; Common shares; 10,000; 10,000; 4,188; 41,884,240; KB Securities; 00164876 Date: June 26, 2026; Common shares; 10,000; 10,000; 3,736; 37,360,000; KB Securities; 00164876 Date: June 29, 2026; Common shares; 10,000; 0; 0; -; KB Securities; 00164876 Date: June 30, 2026; Common shares; 8,000; 8,000; 4,359; 34,875,305; KB Securities; 00164876 Date: July 1, 2026; Common shares; 2,800; 2,262; 4,399; 9,950,785; KB Securities; 00164876 Total: Order quantity 510,800; Quantity acquired 458,373; Acquisition price per share 4,363; Total acquisition value 1,999,998,640; -; -

Note 1) "Date" above is based on trade execution date. Note 2) "Acquisition price per share" above is the average unit price, rounded to the nearest won. Note 3) "Acquisition price per share" and "total acquisition value" above do not include brokerage fees.

4. Whether the planned acquisition matches the actual acquisition Planned acquisition amount (KRW): Common shares 2,000,002,200, Other shares -; Total acquisition value (KRW): Common shares 1,999,998,640, Other shares -; Whether the planned acquisition amount was not reached: -; Reason if not reached: -

5. Holding status of treasury shares after acquisition [As of July 3, 2026] (Unit: KRW, shares, %) Share type: Common shares; Holdings under Article 165-3 of the Act (A): Quantity 458,373, Ratio 2.17%, Total value 1,999,998,640; Holdings under trust agreements under Article 165-3 (B): Quantity -, Ratio -, Contract amount -; Total (A+B): Quantity 458,373, Ratio 2.17%, Amount 1,999,998,640 Total: Quantity 458,373, Ratio 2.17%, Total value 1,999,998,640; -; -; -; Quantity 458,373, Ratio 2.17%, Amount 1,999,998,640

Note 1) The holdings above are prepared on the basis that the 802,817 treasury shares underlying the Company's 1st unregistered, non-interest-bearing, unsecured, privately placed exchangeable bonds issued on December 15, 2025 are deemed to have been requested for exchange on that same date, and are accordingly excluded from the treasury share holdings shown above. Note 2) For details concerning the issuance of the exchangeable bonds and the related decision to dispose of treasury shares, please refer to the Company's disclosures dated December 10, 2025, "Material event report (decision to issue exchangeable bonds)" and "Material event report (decision to dispose of treasury shares)." Note 3) The ratio above is calculated based on the total number of issued shares of 21,151,290 shares. Note 4) The total value above is based on the acquisition price.

6. Changes in the largest shareholder's shareholding before and after the acquisition [As of July 3, 2026] (Unit: shares) Name: Choi Seok-ju; Share type: Common shares; Shareholding at acquisition report date: 8,357,378; Shareholding at acquisition end date: 8,468,935; Reason for change: On-market purchase Total: Common shares 8,357,378 / 8,468,935 / On-market purchase; Other shares -/-/-; Grand total 8,357,378 / 8,468,935 / -