Treasury share disposal: results report

What happened

Treasury Share Disposal: Results Report 6.2 Abov Semiconductor Co., Ltd.

To the Governor of the Financial Supervisory Service August 21, 2026

Company name: Abov Semiconductor Co., Ltd. Representative Director: Choi Won Head office address: 93 Gakri 1-gil, Ochang-eup, Cheongwon-gu, Cheongju-si, Chungcheongbuk-do (Phone) 02-2193-2200 (Website) https://www.abov.co.kr Preparer: (Title) Head of Management Division (Name) Lee Su-min (Phone) 02-2193-2200

1. Name and address of the issuer a. Name: Abov Semiconductor Co., Ltd. b. Address: 93 Gakri 1-gil, Ochang-eup, Cheongwon-gu, Cheongju-si, Chungcheongbuk-do

2. Matters concerning the disposal report a. Filing date of the material event report: August 13, 2026 b. Disposal period: August 18, 2026 to August 18, 2026, carried out on August 18, 2026 by depositing shares into the individual securities accounts of Company executives and employees. c. Class and number of shares subject to the disposal report: Abov Semiconductor registered common shares, 61,150 shares

3. Disposal details (unit: KRW, shares) 2026.08.18: common shares, recipient: Abov Semiconductor executives and employees; order -; disposed 61,150; price per share 7,346; total disposal value 449,207,900; brokerage: Korea Investment & Securities; financial investment business ID 00160144 Total: disposed 61,150; total disposal value 449,207,900

4. Whether the disposal report and the actual disposal match Planned shares to be disposed (shares): common shares 61,150; other shares - Total shares disposed (shares): common shares 61,150; other shares - Match: Matched Reason if a difference occurred: -

5. Treasury share holdings after disposal (as of August 18, 2026) (unit: KRW million, shares, %) Holdings under Article 165-3 (A): common shares 1,163,491 shares, 6.54%, total value KRW 9,609 million Holdings under trust contracts per Article 165-3 (B): - Total (A+B): common shares 1,163,491 shares, 6.54%, KRW 9,609 million Note 1: The ratio above is relative to total issued shares of 17,780,753. Note 2: The total value and amount above are the book value of the remaining treasury shares.