Kokusai Chemical Announces Information on Convertible Bond 'Kokusai 3' (47223) Due to Trading Alert Threshold

Announcement Date: June 25, 2026 Statement Date: June 24, 2026 Statement Time: 15:09:53 Company Code: 4722 Company Name: Kokusai Chemical Subject: The company announces relevant information regarding its convertible bond 'Kokusai 3' (Code: 47223), which has recently met the public alert threshold for trading information, to facilitate investor understanding and differentiation. Applicable Clause: Clause 51 Event Date: June 24, 2026 Details: 1. Event Date: June 24, 2026 2. Reason for Event: In accordance with notification from the GreTai Securities Market 3. Convertible Bond Information: Details of 'Kokusai 3' (47223) Convertible Bond Maturity Date: October 1, 2028 Total Issuance Amount: NT$500,000,000 Outstanding Issuance Balance this Month: NT$355,600,000 (unconverted amount as of June 24, 2026) Latest Conversion Price: 141.3 Underlying Stock Closing Price (4722): 301.00 (closing price on June 24, 2026) Convertible Bond Closing Price (47223): 210.00 (closing price on June 24, 2026) 4. Other Matters to Note: None