Chuang Control Announces Board Resolution to Amend the 2025 Restricted Employee Rights New Share Issuance Plan

1. Factual Date: August 12, 2026 (R.O.C. Year 115) 2. Original Announcement Filing Date: March 11, 2025 (R.O.C. Year 114) 3. Summary of Original Announcement: The Company passed the "2025 Restricted Employee Rights New Share Issuance Plan" through its board meeting on March 11, 2025 (Year 114), and the annual shareholders’ meeting on May 28, 2025 (Year 114). For details, please refer to the material information announcements dated March 11 and May 28, 2025 (Year 114). 4. Reasons for Amendment and Key Contents: (1) During the filing process, certain provisions were revised in accordance with regulatory authority requirements and have been submitted for retroactive approval at the board meeting held on August 12, 2026 (Year 115). (2) Provisions Prior to Amendment: Article 3: Employee Eligibility, Number of Shares Allocated, and Review Procedures (i) This incentive plan applies exclusively to full-time managers of the Company or specific key talents of the Company and its subsidiary companies who are employed and meet certain performance criteria on the date of grant of restricted employee rights shares. Eligibility includes: (1) individuals who have significant influence over the operational decisions of the Company or its subsidiaries; or (2) specific key talents critical to the future core technology and strategic development of the Company or its subsidiaries. The term "subsidiary company" as used herein shall be determined according to the standards set forth in Financial Supervisory Commission Notice No. 1070121068 dated December 27, 2018 (Year 107). Article 5: Conditions for Issuing Restricted Employee Rights Shares and Restrictions on Shareholder Rights (iii) Vesting Conditions: 1. Employees must meet all of the following conditions from the date of allocation of restricted employee rights shares to become vested: (1) Remain employed on each vesting date; (2) Have not violated any contracts with the Company or its subsidiary companies, or the Company’s or its subsidiaries’ work rules during each vesting period; (3) Achieve the employee performance evaluation indicators set by the Company (i.e., the most recent annual performance review prior to the end of the vesting period must be at least "satisfactory"). (iv) Handling of Unvested Shares When Vesting Conditions Are Not Met or Upon Inheritance: 6. Transfer: (1) If an employee requests a transfer to a subsidiary, affiliated company, or other company, any unvested restricted employee rights shares shall be handled in the same manner as voluntary resignation under Subparagraph (2) of this section. (2) For employees officially assigned by the Company or its subsidiary companies to transfer to a subsidiary, affiliated company, or other company, their unvested restricted employee rights shares will not be affected by the transfer. However, they remain subject to the vesting conditions under Paragraph (iii) above, and must continue serving at the assigned subsidiary, affiliated company, or other company on the vesting date; otherwise, they will be deemed not to have met the vesting conditions, and the Company will reclaim the shares free of charge and cancel them. Individual performance evaluations will be determined by the Chairman of the Company, referencing performance assessments provided by the transferee subsidiary, affiliated company, or other company, to confirm whether vesting conditions are satisfied. 8. If an employee violates any contract with the Company or its subsidiary companies or breaches the Company’s or its subsidiaries’ work rules after receiving restricted employee rights shares, the Company will reclaim the shares free of charge and cancel them. (3) Amended Provisions: Article 3: Employee Eligibility, Number of Shares Allocated, and Review Procedures (i) This incentive plan applies exclusively to "full-time employees" of the Company and its "controlling or subsidiary companies" who are employed and meet certain performance criteria on the date of grant of restricted employee rights shares. The term "controlling or subsidiary company" shall be defined pursuant to Article 369-2, Article 369-3, Article 369-9 Paragraph 2, and Article 369-11 of the Company Act. (iii) According to Article 56-1 of the "Regulations Governing the Offering and Issuance of Securities by Issuers," the number of shares a single employee may subscribe to under employee stock options issued under this provision, combined with the cumulative number of restricted employee rights shares acquired by the same employee, shall not exceed 0.3% of the Company’s total issued shares. Furthermore, when combined with employee stock options cumulatively granted to a single employee under Article 56 of the same regulations, the total shall not exceed 1% of the Company’s total issued shares. However, if specifically approved by the competent central authority, a single employee’s combined holdings of employee stock options and restricted employee rights shares may exceed the aforementioned ratios. The number of restricted employee rights shares allocable to a single employee under this paragraph shall follow updated laws and regulations should the competent authority revise relevant rules. Article 5: Conditions for Issuing Restricted Employee Rights Shares and Restrictions on Shareholder Rights (iii) Vesting Conditions: 1. Employees must meet all of the following conditions from the date of allocation of restricted employee rights shares to become vested: (1) Remain employed on each vesting date; (2) Have not violated any contracts with the Company or its controlling or subsidiary companies, or the Company’s or its controlling or subsidiary companies’ work rules during each vesting period; (3) Achieve the employee performance evaluation indicators set by the Company (i.e., the most recent annual performance review prior to the end of the vesting period must be at least "satisfactory"). (iv) Handling of Unvested Shares When Vesting Conditions Are Not Met or Upon Inheritance: 6. Transfer: (1) If an employee requests a transfer to a controlling or subsidiary company, affiliated company, or other company, any unvested restricted employee rights shares shall be handled in the same manner as voluntary resignation under Subparagraph (2) of this section. (2) For employees officially assigned by the Company or its controlling or subsidiary companies to transfer to a controlling or subsidiary company, affiliated company, or other company, their unvested restricted employee rights shares will not be affected by the transfer. However, they remain subject to the vesting conditions under Paragraph (iii) above, and must continue serving at the assigned controlling or subsidiary company, affiliated company, or other company on the vesting date; otherwise, they will be deemed not to have met the vesting conditions, and the Company will reclaim the shares free of charge and cancel them. Individual performance evaluations will be determined by the Chairman of the Company, referencing performance assessments provided by the transferee controlling or subsidiary company, affiliated company, or other company, to confirm whether vesting conditions are satisfied. 8. If an employee violates any contract with the Company or its controlling or subsidiary companies or breaches the Company’s or its controlling or subsidiary companies’ work rules after receiving restricted employee rights shares, the Company will reclaim the shares free of charge and cancel them. 5. Impact on the Company’s Financial and Business Operations After Amendment: None 6. Other Matters to Be Disclosed: None