Treasury share disposal: results report

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Tplex / Treasury Share Disposal: Results Report

Treasury Share Disposal: Results Report To the Governor of the Financial Supervisory Service August 31, 2026

Company name: Tplex Co., Ltd. Representative directors: Kim Young-guk, Kim Tae-seop Head office address: 75 MTV 1-ro, Danwon-gu, Ansan-si, Gyeonggi-do (Telephone) 031-488-8800 (Website) http://www.tplex.co.kr Preparer: (Title) Representative Director (Name) Kim Tae-seop (Telephone) 031-488-8800

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

2. Details of the disposal report (a) Material event report filing date: March 27, 2026, August 28, 2026 (b) Disposal period: From August 31, 2026 to August 31, 2026 (c) Type and number of shares reported for disposal: Registered common shares, 46,330 shares

3. Disposal details (Unit: KRW, shares) Date: 2026-08-31, Type: Common shares; Order quantity: 46,330; Disposed quantity: 46,330; Price per share: 2,765; Total disposal amount: 128,102,450; Disposal counterparty: Employee Stock Ownership Association; Brokerage: Shinhan Investment & Securities; Financial investment business ID: 00138321 Total, Order quantity: 46,330; Disposed quantity: 46,330; Price per share: 2,765; Total disposal amount: 128,102,450

Note 1: The 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 disposal was carried out by crediting shares directly from the Company's own securities account to the Tplex Employee Stock Ownership Association's securities account. Note 3: For further details on the above disposal, please refer to the "Results of the Annual General Shareholders' Meeting" disclosed on March 27, 2026 and the "Material Event Report (Treasury Share Disposal Decision)" disclosed on August 28, 2026.

4. Consistency between the disposal report and the actual disposal Planned shares for disposal (shares): Common shares: 231,656; Other-class shares: - Total shares actually disposed of (shares): Common shares: 46,330; Other-class shares: - Consistency: Inconsistent Reason for the difference: Difference in the number of shares disposed of arising from the disposal schedule following the shareholders' meeting resolution

5. Treasury share holdings after disposal [as of August 28, 2026] (Unit: KRW, shares, %) Holdings under Article 165-3 (A): Common shares, quantity: 1,140,353; ratio: 4.69; total value: 3,673,895,439 Holdings under trust contracts, etc. per Article 165-3 (B): Common shares, quantity: -; ratio: -; contract amount: - Total (A+B): Common shares, quantity: 1,140,353; ratio: 4.69; amount: 3,673,895,439

Note 1: The above ratio is the percentage of treasury shares relative to the total shares issued (24,268,402 shares) as of the report preparation date. Note 2: For the holdings under Article 165-3 (A), the total value for the 1,140,353 shares is stated at book value.