Castles — Proxy Solicitation & Information Statement 2026

Apr 24, 2026

Stock Code: 5258

CASTLES TECHNOLOGY. Co., LTD.

Notice of 2026 Annual General Shareholders' Meeting

(Summary Translation)

1. The Company will hold 2026 Annual Shareholders' Meeting at 10:00 a.m., on Tuesday, May 26, 2026. 2F, No. 213, Sec 3, Beixin Rd., Xindian Dist., New Taipei City(Taipei Innovation City Convention Center)

2. The proposed agenda is as follows

(1) Report Items :

A. 2025 Business Report
B. 2025 Audit Committee's Audit Report
C. 2025 Employees' and Directors' Remuneration Report
D. Report on the execution of the Company's treasury stock repurchase.

(2) Proposed Resolutions :

A. 2025 Business Report and Financial Statements
B. 2025 Earnings Distribution Proposal.

(3) Discussion Items :

A. Amendment to some of the articles of the "Articles of Incorporation"
B. Amendment to some of the articles of the "Operational Procedures for Loaning Funds and Providing Endorsements/Guarantees."

(4) Extraordinary Motions.

1. The cash dividends proposed for distribution to shareholders amount to NTD 109,578,894. (equivalent to NT$1 per share)

2. Please refer to the website of MOPS at (http://mops.twse.com.tw) for essential contents of items specified under Article 172 of the Company Law.

3. Pursuant to Article 165 of the Company Law, The Company Act Article 165 instructed book close period for ordinary shares starting from March 28, 2026 to May 26, 2026.

4. If any shareholder requires solicitation of a proxy to attend the meeting, the Company will compile a summary statement of the solicitor and solicitation information for disclosure on the website of the Securities and Futures Institute (SFI) on April 24, 2026. Investors may visit SFI's website at https://free.sfi.org.tw and search for proxy details for free.

5. Please find the Notice of attendance and Proxy Form enclosed with the Meeting Notice. If you plan to attend in person, please affix your signature or personal seal on the "attendance sign-in card" and register at the meeting venue on the date of the meeting. If you plan to appoint a proxy to attend the Meeting, please affix your signature or personal seal on the proxy, fill out the name and address of the proxy, and deliver to the registrar of the Company, Stock Agent Department of Taishin Securities Co., Ltd., five days prior to the Annual Shareholders' Meeting, to facilitate dispatching attendance sign-in card to the engaged proxy.

6. Shareholders may exercise his/her voting rights through electronic votes at the STOCKVOTE platform of Taiwan Depository & Clearing Corporation (http://www.stockvote.com.tw) during the period from April 25, 2026 to May 23, 2026.

Board of Directors

CASTLES TECHNOLOGY. Co., LTD.