CCW — Proxy Solicitation & Information Statement 2026

May 20, 2026

Stock Code :1713

Cathay Chemical Works, Inc.

Notice of 2026 Annual General Shareholder's Meeting

I. The 2026 Annual General Meeting of Shareholders (the "meeting") will be held on Wednesday, June 24th, 2026, at 9 am.

Place: 12th Floor, No. 320 Zhongxiao E. Road, Section 4, Taipei 10694, Taiwan (The conference room of Cathay Chemical Works, Inc.)

Shareholder registration will begin at 8:30 a.m. The registration location is the same as the meeting venue.

Meeting Agenda:

1. Report Items

(1) 2025 Business Report.
(2) Audit Committee's Review Report on the 2025 Financial Statements.
(3) Report on 2025 employees' compensation and remuneration to directors.

1. Matters of Ratification

(1) Adoption of the 2025 Business Report and Financial Statements.
(2) Adoption of the Proposal for Distribution of 2025 Earnings.

1. Discussion

(1) Proposal to Amend Certain Provisions of the Company's Articles of Incorporation.
(2) Proposal to Amend the Company's Procedures for Acquisition or Disposal of Assets.

1. Election Matters

(1) Election of the Board of Directors
5. Other motions

(1) Discussion to approve the lifting of director of non-competition Restrictions
6. Extempore Motion

II. The cash dividends distribution are proposed by the Board of Directors as follows :

Distribution : Cash dividend: NT$ 3.1 per share.

III. Directors Election: There will be an election for 5 Directors (including 3 Independent Directors, adoption of the candidate nomination system. The list of director candidates is as follows: Representative, Hengchang Investment Corp. Jou-Er, Ing. The list of independent director candidates is as follows: Chi-Ying Tseng, Lien-Chu Yeh, Wen-Kuei Chi. For relevant information such as their educational and professional backgrounds, please refer to the Market Observation Post System (https://mops.twse.com.tw)

IV. The explanation for the proposal to lift the non-competition restrictions on the Company's directors is as follows: Pursuant to Article 209 of the Company Act, it is proposed that the shareholders' meeting approve the lifting of the non-competition restrictions applicable to the Company's newly appointed directors and the juristic persons they represent. For details regarding the concurrent positions held by the newly appointed directors, please refer to the meeting handbook.

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V. Shareholders who attend the meeting should bring their attendance card and a copy of the power of attorney. If you decide to attend the meeting in person, please sign or stamp your name on the attendance card and bring it to the registration desk at the meeting date at the latest. If you appoint a proxy, please sign or stamp your name on the power of attorney and please fill in the proxy's name, ID number, and address, and send it to the Shareholder Services Department of Mega Securities Co., Ltd. (1F., No. 95, Sec. 2, Zhongxiao E. Rd., Zhongzheng Dist., Taipei City) at least five days before the meeting for registration (2026/06/18).

VI. If any shareholder requests a proxy at this shareholders meeting, Company will prepare a summary of solicitation materials before 2026/05/22, publish on the Securities Foundation website. If investors want to inquire, investors can access the "Free Inquiry System for Power of Attorney Announcements" (website: https://free.sfi.org.tw)

VII. According to the provisions of Article 172 of the Company Act, Article 26-1 and 43-6 of the Securities and Exchange Act, and relevant laws and regulations, the main contents of the shareholder meeting proposal can be viewed on the Public Information Observation Website (website: https://mops.twse.com.tw).

VIII. In accordance with Article 13-1 of the Rules Governing the Use of Powers of Attorney by Publicly Issued Companies to Attend Shareholders' Meetings, the statistical verification agency for our company's power of attorney is the Shareholder Services Department of Mega Securities Co., Ltd.

IX. The shareholders' meeting this time will be able to exercise voting rights electronically, from May 23rd, 2026, to June 21st, 2026. Please log in to the Taiwan Depository & Clearing Corporation's "Electronic Voting Platform" website (URL:https://stockservices.tdcc.com.tw) and follow the instructions.

Sincerely,

Board of Directors

Cathay Chemical Works, Inc.