Treasury share acquisition: results report

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Treasury Share Acquisition: Results Report [Form version] 6.0

Shinil Electronics Co., Ltd. Treasury Share Acquisition: Results Report To the Governor of the Financial Supervisory Service July 13, 2026

Company name: Shinil Electronics Co., Ltd. CEO: Jeong Yun-seok Head office address: 308, Yeongok-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si, Chungcheongnam-do (Phone) 02-2081-3420 (Website) https://www.shinil.co.kr Preparer: (Title) Executive Director (Name) Lee Chang-su (Phone) 02-2081-3420

1. Name and address of the issuer (a) Name: Shinil Electronics Co., Ltd. (b) Address: 308, Yeongok-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si, Chungcheongnam-do

2. Details of the acquisition report (a) Material event report filing date: June 17, 2026 (b) Acquisition period: from June 18, 2026 to July 10, 2026

3. Acquisition details (Unit: KRW, shares) Date: June 18, 2026; Type: common shares; Order quantity: 80,000; Quantity acquired: 80,000; Price per share: 1,225; Total acquisition value: 97,960,000; Brokerage firm: Korea Investment & Securities; Financial investment business entity ID: 00160144 Date: June 19, 2026; common shares; 80,000; 80,000; 1,176; 94,103,705; Korea Investment & Securities; 00160144 Date: June 22, 2026; common shares; 160,000; 160,000; 1,152; 184,289,047; Korea Investment & Securities; 00160144 Date: June 23, 2026; common shares; 160,000; 160,000; 1,121; 179,319,109; Korea Investment & Securities; 00160144 Date: June 24, 2026; common shares; 160,000; 160,000; 1,089; 174,225,554; Korea Investment & Securities; 00160144 Date: June 25, 2026; common shares; 160,000; 160,000; 1,080; 172,845,753; Korea Investment & Securities; 00160144 Date: June 26, 2026; common shares; 160,000; 160,000; 1,027; 164,248,226; Korea Investment & Securities; 00160144 Date: June 29, 2026; common shares; 160,000; 85,775; 1,114; 95,560,558; Korea Investment & Securities; 00160144 Date: June 30, 2026; common shares; 160,000; 160,000; 1,148; 183,679,592; Korea Investment & Securities; 00160144 Date: July 1, 2026; common shares; 160,000; 160,000; 1,157; 185,162,951; Korea Investment & Securities; 00160144 Date: July 2, 2026; common shares; 160,000; 160,000; 1,155; 184,867,375; Korea Investment & Securities; 00160144 Date: July 3, 2026; common shares; 80,000; 68,281; 1,156; 78,921,321; Korea Investment & Securities; 00160144 Date: July 6, 2026; common shares; 50,000; 50,000; 1,325; 66,250,000; Korea Investment & Securities; 00160144 Date: July 7, 2026; common shares; 50,000; 50,000; 1,151; 57,548,602; Korea Investment & Securities; 00160144 Date: July 8, 2026; common shares; 70,756; 70,756; 1,096; 77,528,704; Korea Investment & Securities; 00160144 Date: July 9, 2026; common shares; 2,600; 2,600; 1,055; 2,743,000; Korea Investment & Securities; 00160144 Date: July 10, 2026; common shares; 98; 98; 1,089; 106,722; Korea Investment & Securities; 00160144 Total: order quantity 1,853,454; quantity acquired 1,767,510; average price per share 1,131; total acquisition value 1,999,360,219

4. Consistency between planned and actual acquisition Planned acquisition amount (KRW): common shares 1,999,361,000; other shares - Total acquisition value (KRW): common shares 1,999,360,219; other shares - Shortfall vs. plan: No; reason if shortfall occurred: - Note: Due to share price fluctuations during the treasury share acquisition period, the company completed the acquisition in excess of the planned number of shares stated in the material event report. Planned number of shares: 1,651,000; number of shares acquired in excess: 116,510; actual number of shares acquired: 1,767,510.

5. Treasury shares held after the acquisition [as of July 13, 2026] (Unit: KRW, shares, %) Type of share: common shares Holdings under Article 165-3 (A): Quantity 2,201,284; Ratio 3.2%; Total value 2,612,111,863 Holdings under trust contract under Article 165-3 (B): - Total (A+B): Quantity 2,201,284; Ratio 3.2%; Amount 2,612,111,863 Total: Quantity 2,201,284; Ratio 3.2%; Total value 2,612,111,863

6. Changes in the largest shareholder's shareholding before and after the acquisition [as of July 13, 2026] (Unit: shares) Name: Kim Yeong; Type of share: common shares; Shares held at report filing: 7,656,602; Shares held at end of acquisition: 7,656,602; Reason for change: - Total: common shares 7,656,602; 7,656,602; - Other shares: -; -; - Grand total: 7,656,602; 7,656,602; -