Treasury share disposal: results report

What happened

Treasury Share Disposal: Results Report Form 6.2

Hanmi Science Co., Ltd. Treasury Share Disposal: Results Report

To: Governor of the Financial Supervisory Service Date: August 7, 2026

Company name: Hanmi Science Co., Ltd. Representative Director: Kim Jae-gyo Head office address: 214 Muha-ro, Paltan-myeon, Mansei-gu, Hwaseong-si, Gyeonggi-do (Tel) 02-410-9024 (Website) https://www.hanmiscience.co.kr Preparer: (Title) Executive Vice President (Name) Shim Byeong-hwa (Tel) 02-410-9024

1. Name and address of the issuer a. Name: Hanmi Science Co., Ltd. b. Address: 214 Muha-ro, Paltan-myeon, Mansei-gu, Hwaseong-si, Gyeonggi-do

2. Details of the disposal report a. Material event report submission date: July 28, 2026 b. Disposal period: from August 4, 2026 to August 5, 2026 c. Type and number of shares reported for disposal: 35,501 common shares

3. Details of disposal (Unit: KRW, shares) Date: Type; Order quantity; Disposed quantity; Price per share; Total disposal price; Disposal recipients; Brokerage securities firm; Financial investment business entity ID 2026-08-04: Common shares; 27,253; 27,253; 36,050; 982,470,650; Officers and employees, etc.; Shinhan Investment & Securities; 00138321 2026-08-05: Common shares; 8,248; 8,248; 39,200; 323,321,600; Officers and employees, etc.; Shinhan Investment & Securities; 00138321 Total: -; 35,501; 35,501; -; 1,305,792,250; -; -; - * The price per share is the closing price on the day before the disposal. * The above total disposal price is the closing price on the day before the treasury share disposal multiplied by the disposed quantity. * All 35,501 disposed shares were transferred from the company's securities account to the individual securities accounts of officers and employees.

4. Consistency between the disposal report and actual disposal Planned disposal shares (shares): Common 40,844; Other - Total disposed shares (shares): Common 35,501; Other - Consistency: Inconsistent Reason for difference: The difference arose from share price fluctuations and performance evaluation results between the board resolution on treasury share disposal and the actual disposal.

5. Status of treasury share holdings after disposal [as of August 5, 2026] (Unit: KRW, shares, %) Share type: Holdings under Article 165-3 (A); Holdings under trust contract, etc. under Article 165-3 (B); Total (A+B) Common shares: Quantity 0; Ratio 0; Total value 0 / Quantity 0; Ratio 0; Contract amount 0 / Quantity 0; Ratio 0; Amount 0 Total: Quantity 0; Ratio 0; Total value 0 / Quantity 0; Ratio 0; Contract amount 0 / Quantity 0; Ratio 0; Amount 0 * As of the date of submission of this report, the company's treasury share holding of 604,908 shares, held pursuant to Article 341-2 of the Commercial Act, is not included in the above table.