Treasury share disposal: results report

What happened

Treasury share disposal: results report 6.2 FST Co., Ltd. Treasury share disposal: results report To: Governor of the Financial Supervisory Service Date: August 27, 2026 Company name: FST Co., Ltd. Representative director: Jang Gyeong-bin Head office: 15-23 Dongtan-sandan 6-gil, Hwaseong-si, Gyeonggi-do (Tel) 031-371-2400 (Website) http://www.fstc.co.kr Preparer: (Title) Representative Director (Name) Jang Gyeong-bin (Tel) 031-371-2400

1. Name and address of the issuer (a) Name: FST Co., Ltd. (b) Address: 15-23 Dongtan-sandan 6-gil, Hwaseong-si, Gyeonggi-do

2. Disposal report details (a) Material event report filing date: August 26, 2026 (b) Disposal period: August 27, 2026 to August 27, 2026 (c) Class and number of shares reported for disposal: FST Co., Ltd. registered common shares (treasury shares), 6,194 shares

3. Disposal details (unit: KRW, shares) Date 2026-08-27; type common shares; order quantity -, disposed quantity 6,194; price per share disposed 27,430; total disposal value 169,901,420; disposal counterparty employees and executives; consignee securities firm -; financial investment business entity code - Total: disposed quantity 6,194; price per share 27,430; total value 169,901,420

4. Whether the disposal report matches the actual disposal Planned shares to be disposed: common shares 6,194, other-class shares -; actual total shares disposed: common shares 6,194, other-class shares -; match: matched; reason for any difference: -

5. Treasury shares held after disposal [as of August 27, 2026] (unit: KRW, shares, %) Common shares - holdings under Article 165-3 (A): quantity 213,420; ratio 0.98%; total value KRW 1,005 million Holdings under trust contracts per Article 165-3 (B): quantity -; ratio -; contract amount - Total (A+B): quantity 213,420; ratio 0.98%; amount KRW 1,005 million Total (all classes): quantity 213,420; ratio 0.98%; amount KRW 1,005 million * The above ratios are calculated against total shares outstanding of 21,649,789 shares.