Treasury share acquisition: results report

What happened

Treasury share acquisition: results report To the Governor of the Financial Supervisory Service September 29, 2026 Company name: K Auction Co., Ltd. CEO: Do Hyun-soon Head office address: 7th floor, 26 Eonju-ro 174-gil, Gangnam-gu, Seoul (Sinsa-dong) (Phone) 02-3479-5813 (Website) http://www.k-auction.com Preparer: (Title) Managing Director (Name) Kim Byung-soo (Phone) 02-3479-5813

1. Name and address of the issuer a. Name: K Auction Co., Ltd. b. Address: 7th floor, 26 Eonju-ro 174-gil, Gangnam-gu, Seoul (Sinsa-dong)

2. Matters concerning the acquisition report a. Material event report filing date: July 2, 2026 b. Acquisition period: September 28, 2026 to September 28, 2026

3. Acquisition details (Unit: KRW, shares) Date: 2026-09-28; type: common shares; order quantity 0; acquisition quantity 500,000; price per share 0; total value 0; consignment securities firm -; financial investment business registration number - Total: acquisition quantity 500,000; price per share 0; total value 0 This treasury-share acquisition arose from a gift of 500,000 common shares from the Company's largest shareholder; accordingly, there is no "price per share acquired" or "total acquisition value."

4. Whether the acquisition report matches the actual acquisition - Expected acquisition amount (KRW): common shares -; other class shares - - Total acquisition value (KRW): common shares -; other class shares - - Whether the expected amount was not reached, and reason if so: - This treasury-share acquisition arose from a gift of 500,000 common shares from the Company's largest shareholder; accordingly, there is no "expected acquisition amount" or "total acquisition value."

5. Holding status of treasury shares, etc. after acquisition [As of September 29, 2026] (Unit: KRW, shares, %) Common shares - holdings under Article 165-3 (A): quantity 500,000; ratio 1.93%; total value 0; holdings under trust agreement, etc. (B): quantity 0; ratio 0; contract amount 0; total (A+B): quantity 500,000; ratio 1.93%; amount 0 Total row: same as above The above ratio is of the treasury shares to the 25,888,290 total shares issued as of September 29, 2026.

6. Changes in the largest shareholder's shareholding before and after the acquisition [As of September 29, 2026] (Unit: shares) TA Advisors LLC: common shares - acquisition report date holding 14,040,339; acquisition end date holding 13,540,339; reason for change: gift Total: common shares 14,040,339 / 13,540,339; other class shares -; grand total 14,040,339 / 13,540,339 Note: figures are as of the trade date.