Treasury share disposal: results report

What happened

Treasury Share Disposal: Results Report Tplex Co., Ltd. To the Governor of the Financial Supervisory Service September 30, 2026

Company name: Tplex Co., Ltd. CEO: Kim Young-kook, Kim Tae-sub Head office: 75 MTV1-ro, Danwon-gu, Ansan-si, Gyeonggi-do Tel: 031-488-8800 Website: http://www.tplex.co.kr Preparer: CEO Kim Tae-sub, Tel 031-488-8800

1. Name and address of the issuer a. Name: Tplex Co., Ltd. b. Address: 75 MTV1-ro, Danwon-gu, Ansan-si, Gyeonggi-do

2. Disposal report details a. Material event report submission date: March 27, 2026, August 28, 2026 b. Disposal period: September 30, 2026 to September 30, 2026 c. Type and number of shares reported for disposal: Registered common shares, 53,684 shares

3. Disposal details (Unit: KRW, shares) Date 2026-09-30; Type: common shares; Order quantity: 53,684; Disposed quantity: 53,684; Disposal price per share: 2,765; Total disposal amount: 148,436,260; Disposal recipient: Employee Stock Ownership Association; Brokerage handling the sale: Shinhan Investment Corp.; Financial investment business entity ID number: 00138321 Total: common shares; Order quantity 53,684; Disposed quantity 53,684; Disposal price per share 2,765; Total disposal amount 148,436,260

Note 1) The disposal price per share is the closing market price (KRW 2,765) on August 27, 2026, the trading day before the board resolution. Note 2) The shares were disposed of by direct transfer from the company's stock account to the Tplex Employee Stock Ownership Association's securities account. Note 3) For details, please refer to the "Results of the Regular Shareholders' Meeting" disclosed on March 27, 2026, and the "Material Event Report (Decision on Treasury Share Disposal)" disclosed on August 28, 2026.

4. Whether the disposal report matches the actual disposal Planned shares for disposal: common shares 185,326; other shares - Total shares actually disposed: common shares 53,684; other shares - Match: Mismatch Reason for discrepancy: Difference in the number of shares disposed arose due to the disposal schedule following the shareholders' meeting resolution.

5. Status of treasury shares held after disposal [As of September 30, 2026] (Unit: KRW, shares, %) Common shares - Holdings under Article 165-3 of the Act (A): quantity 1,086,669; ratio 4.47%; total value KRW 3,501,031,546. Holdings under trust contracts, etc. under Article 165-3 of the Act (B): quantity -; ratio -; contract amount -. Total (A+B): quantity 1,086,669; ratio 4.47%; amount KRW 3,501,031,546. Total (all share types): quantity 1,086,669; ratio 4.47%; amount KRW 3,501,031,546

Note 1) The above ratio is the ratio of treasury shares to the total number of issued shares (24,268,402 shares) as of the report preparation date. Note 2) In holdings under Article 165-3 of the Act (A), the total value of 1,086,669 shares is stated at book value.