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

What happened

Material Event Report (Decision to Redeem Own Convertible Bonds Before Maturity), Form 6.0 Solux Co., Ltd. Material Event Report / Exchange Reporting Obligation To: Financial Services Commission / Korea Exchange July 31, 2026 Company name: Solux Co., Ltd. Representative Director: Jung Jae-jun Head office address: 32-22 Jeongan Agro-Industrial Complex-gil, Jeongan-myeon, Gongju-si, Chungnam Phone: 02-2668-2600 Website: http://www.solux.co.kr Preparer: (Title) Executive Vice President, General Management; (Name) Kim Hyun-su; (Phone) 02-2668-2600

Decision to Redeem Own Convertible Bonds Before Maturity 1. Type of bonds: Round 5; Type: Unregistered, interest-bearing, unsecured, privately placed convertible bonds 2. Bond issuance date: March 26, 2026 3. Bond issuance method: Private placement 4. Bond maturity date: March 26, 2029 5. Total face value of bonds (electronically registered) (KRW): 7,501,000,000 6. Face value of bonds subject to acquisition (electronically registered) (KRW): 2,501,000,000 7. Acquisition decision date: July 31, 2026 8. Acquisition amount: KRW 2,613,031,095; Basis of calculation: negotiation with the bond underwriter; (Scheduled) payment date: July 31, 2026; Source of acquisition funds: own funds 9. Acquisition method: Over-the-counter purchase 10. Reason for acquisition before maturity: partial early redemption of face value through separate agreement with the bondholder 11. Future handling plan: handling method to be determined through a future board resolution 12. Matters concerning conversion: conversion ratio 100%; conversion price per share as of report date KRW 4,217; shares to be issued upon conversion: Solux Co., Ltd. registered common shares; number of shares 593,075; ratio to total shares 1.13%; conversion request period March 26, 2027 to February 26, 2029 13. Remaining face value of bonds after acquisition (electronically registered) (KRW): 5,000,000,000 14. Subject to Fair Trade Commission reporting: Not applicable 15. Other matters for investment reference - The "8. Acquisition amount" of KRW 2,613,031,095 is the sum of principal and interest; after deducting the withholding tax on interest income pursuant to applicable law, the amount actually paid to the seller (the bondholder) was KRW 2,595,778,325. - The "conversion ratio" and "shares to be issued upon conversion" under "12. Matters concerning conversion" are prepared assuming that the convertible bonds to be acquired this time are converted, as of the sale decision date.

[Matters Concerning the Seller] Seller name: Cha Bio Tech Co., Ltd.; Relationship to company or largest shareholder: -; Basis for selection: bondholder of these bonds; Transactions/plans within 6 months before or after the acquisition decision: -; Face value of bonds sold (KRW): 2,501,000,000; Note: - Total: -; -; -; 2,501,000,000; -

[If the seller includes a corporation or organization] (1) Basic information: Cha Bio Tech Co., Ltd.; Number of investors: 53,169; Representative director (representative partner): Cha Won-tae, 3.75%; Managing partner: -; Largest shareholder (largest contributor): Cha Kwang-ryul, 4.92% (2) Key financial information for the most recent fiscal year (unit: KRW million): Fiscal year 2025; Fiscal year-end December; Total assets 2,547,575; Revenue 1,268,254; Total liabilities 1,738,327; Net income (loss) -146,708; Total equity 809,249; External auditor Daeju Accounting Corporation; Capital stock 39,651; Audit opinion Unqualified