Material event report (decision to redeem own convertible bonds early)

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Material event report (decision to acquire own convertible bonds before maturity) 6.0 Itek Co., Ltd.

Material event report / Matter subject to exchange reporting obligation To: Financial Services Commission / Korea Exchange July 31, 2026 Company name: Itek Co., Ltd. Representative director: Lee Jang-hyeok Head office address: 9-15 Dongtan Industrial Complex 4-gil, Hwaseong-si, Gyeonggi-do (Phone) 031-8077-1500 (Website) http://www.iteksemi.com Person responsible for preparation: (Title) Executive Director; (Name) Lee Jung-yeop; (Phone) 031-8077-1500

Decision to acquire own convertible bonds before maturity

1. Type of bonds: Series 6; Unregistered, interest-bearing, unsecured, privately placed convertible bonds 2. Bond issue date: February 27, 2026 3. Bond issue method: Private placement 4. Bond maturity date: February 27, 2031 5. Total face value (electronically registered) of the bonds (KRW): 40,000,000,000 6. Face value (electronically registered) amount of the bonds to be acquired (KRW): 13,500,000,000 7. Acquisition decision date: July 31, 2026 8. Acquisition amount: Amount (KRW): 13,618,044,000; Basis for calculation: principal and interest; Payment (expected) date: August 3, 2026; Source of acquisition funds: Own funds 9. Acquisition method: Over-the-counter purchase 10. Reason for acquisition before maturity: Decision to acquire the bonds before maturity through consultation with the bondholders 11. Future treatment plan: To be determined later through a board resolution 12. Matters concerning conversion: Conversion ratio (%): 100; Conversion price as of the reporting date (KRW/share): 8,882; Type of shares to be issued upon conversion: Itek Co., Ltd. registered common shares; Number of shares: 1,519,927; Ratio to total shares (%): 5.42; Conversion request period: Start date: February 27, 2027; End date: January 27, 2031 13. Face value (electronically registered) balance of the bonds outstanding after acquisition (KRW): 26,500,000,000 14. Whether subject to Fair Trade Commission reporting: Not applicable

15. Other matters for reference in investment decisions 1) The "7. Acquisition decision date" above is the date of the board resolution on this bond acquisition. 2) Of the basis for calculation in "8. Acquisition amount" above, the interest was calculated by applying, through consultation with the bondholders, a guaranteed yield to maturity (2.00% per annum, compounded quarterly) to the total face value of the bonds from the bond issue date; the payment (expected) date in "8. Acquisition amount" is the date on which the acquisition is completed. 3) Regarding "11. Future treatment plan" above, no separate discussion has taken place to date regarding the specific treatment following this early acquisition of the Company's own bonds before maturity. A final decision will be made in the future through a board resolution. 4) Of "12. Matters concerning conversion" above, the ratio to the total number of shares was calculated as [number of voting shares expected to be issued / (total number of voting shares issued as of the acquisition date + number of voting shares expected to be issued)].

[Matters concerning the sellers] Seller name (relationship with Company/largest shareholder; basis for selection; transaction history and plans within 6 months before/after the acquisition decision; face value of bonds sold (KRW); note): Shinhan Investment Corp. (in its capacity as trustee of Fund 8 and Fund 9): -; -; -; 4,200,000,000; - Korea Investment & Securities Co., Ltd. (in its capacity as trustee of Fund 10): -; -; -; 800,000,000; - Korea Investment & Securities Co., Ltd. (in its capacity as trustee of Fund 20): -; -; -; 1,200,000,000; - Korea Investment & Securities Co., Ltd. (in its capacity as trustee of Fund 21): -; -; -; 800,000,000; - NH Investment & Securities Co., Ltd. (in its capacity as trustee of Fund 22): -; -; -; 1,000,000,000; - Samsung Securities Co., Ltd. (in its capacity as trustee of Fund 23): -; -; -; 1,000,000,000; - Shinhan Bank Co., Ltd. (in its capacity as trustee of Fund 24): -; -; -; 1,000,000,000; - NH Investment & Securities Co., Ltd. (in its capacity as trustee of Fund 27): -; -; -; 1,000,000,000; - NH Investment & Securities Co., Ltd. (in its capacity as trustee of Fund 32 and Fund 33): -; -; -; 1,500,000,000; - Meritz Securities Co., Ltd.: -; -; -; 1,000,000,000; -