Treasury share acquisition: results report

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Treasury share acquisition: results report 6.0 Samkee Energy Solutions Co., Ltd. Treasury share acquisition: results report

To the Governor of the Financial Supervisory Service, 2026-07-16 Company name: Samkee Energy Solutions Co., Ltd. CEO: Kim Chi-hwan Head office address: 263-29 Mujangsaneop-ro, Jigok-myeon, Seosan-si, Chungcheongnam-do (Phone) 031-724-5900 (Website) http://ev.samkee.com Preparer: (Title) General Manager (Name) Jin Hun (Phone) 031-724-5900

1. Name and address of the issuer a. Name: Samkee Energy Solutions Co., Ltd. b. Address: 263-29 Mujangsaneop-ro, Jigok-myeon, Seosan-si, Chungcheongnam-do

2. Details of the acquisition report a. Filing date of the material event report: 2026-07-08 b. Acquisition period: 2026-07-10 to 2026-07-15 * The above [acquisition period] is based on the trade execution date.

3. Details of the acquisition (Unit: KRW, shares) Date: Type: Ordered quantity: Acquired quantity: Acquisition price per share: Total acquisition amount: Brokerage firm: Financial investment business entity ID 2026-07-10: Common shares: 50,000: 50,000: 1,637: 81,877,889: KB Securities: 00164876 2026-07-13: Common shares: 30,000: 30,000: 1,594: 47,830,000: KB Securities: 00164876 2026-07-15: Common shares: 21,343: 21,343: 1,555: 33,188,365: KB Securities: 00164876 Total: -: 101,343: 101,343: 1,607: 162,896,254: -: - * The above "acquisition price per share" and "total acquisition amount" do not include fees.

4. Whether the planned acquisition and the actual acquisition match Planned acquisition amount (KRW): Common shares / Other shares; Total acquisition amount (KRW): Common shares / Other shares; Whether short of the planned amount; Reason if short 163,668,945 / -; 162,896,254 / -; -; - * The Company completed the treasury share acquisition within the planned acquisition amount stated in its material event report (treasury share acquisition decision).

5. Treasury share holdings after the acquisition [as of 2026-07-16] (Unit: KRW, shares, %) Type of shares: Holdings under Article 165-3 of the Act (A); Holdings under a trust agreement under Article 165-3 of the Act (B); Total (A+B) Quantity / Ratio / Total value; Quantity / Ratio / Contract amount; Quantity / Ratio / Amount Common shares: 101,343 / 0.18 / 162,896,254; - / - / -; 101,343 / 0.18 / 162,896,254 Total: 101,343 / 0.18 / 162,896,254; - / - / -; 101,343 / 0.18 / 162,896,254 * The above ratio is calculated against the total shares issued (57,196,240 shares).

6. Change in the largest shareholder's shareholding before and after the acquisition [as of 2026-07-16] (Unit: shares) Name: Change in shareholding - Type of shares, Acquisition report date, Acquisition end date, reason for change Samkee: Common shares; 29,364,820; 29,364,820; - Total: Common shares; 29,364,820; 29,364,820; - Grand total: 29,364,820; 29,364,820; -