Regal Holding Co., Ltd. — Proxy Solicitation & Information Statement 2026

Apr 24, 2026

Meeting Notice of Annual Meeting of Shareholders

A. The 2026 Annual General Shareholders' Meeting (the "Meeting") of REGAL HOLDING CO., LTD. (the "Company") will be held on May 26th, 2026 (Tuesday) 0900 o'clock morning at GIS Taipei Tech Convention Center-Room (3F, No.1, Sec.3, Zhongxiao E. Rd., Taipei City, Taiwan) at Everlight Building, National Taipei University of Technology. The registration time of the meeting shall start at 0830 o'clock in the morning, and the registration place is the same as the meeting place.

The agenda of the meeting is as follows:

1. Report Items
   1.1 2025 Operating Report.
   1.2 Audit Committee's Review Report.
   1.3 Report about 2025 Directors' Compensation.
   1.4 Report about 2025 Directors' and Employees' Remuneration.
   1.5 Report on the acquisition of land use rights of Regal Jewelry Manufacture Co., Ltd., a key subsidiary, by Regal Plating Co., Ltd., a sub-subsidiary.
   1.6 Report on accumulated losses reaching one-half of the Company's paid-in capital.
   1.7 Report on the implementation of the business improvement plan.

2. Ratifications
   2.1 Acknowledgement of 2025 Business Report and Financial Report.
   2.2 Acknowledgement of the Proposal of 2025 Earnings Distribution.

3. Elections:
   3.1 Election of the 7th Board of Directors including Independent Directors.

4. Discussion Items
   4.1 Proposal for the removal of non-competition restrictions on newly elected directors.

5. Extemporary Motions

B. The Company provides online broadcast, start from 0900 o'clock in the morning of the day. Please enter the URL to watch the live broadcast at h t t p s://z o o m.u s/j/6433078965?o m n=96378513179 「Zoom Meeting ID: 6433078965 / Topic: The 2026 Annual General Shareholders' Meeting of Regal Holding Co., Ltd.」. If you have any questions about online broadcast, please contact customer service at 0908-664-807.

C. If the reasons for convening this shareholders' meeting include matters that, pursuant to Article 172 of the Company Act, require an explanation of the main content, please visit the Market Observation Post System (MOPS) (website: https://mops.twse.com.tw). Select "Company Information" → "Electronic Documents" → "Annual Reports and Shareholders' Meeting Information" (including depository receipt information), and enter the Company's stock code (or abbreviation) and year to access the "Reference Materials for Shareholders' Meeting Proposals" or the "Meeting Handbook and Supplementary Materials."

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D. From March 28th, 2026, to May 26th, 2026, the Company should stop the registration of stock transfer as stipulated in Article 165 of the Company Act.

E. Each attendance notification and proxy form will be attached in this meeting notice. If the shareholder(s) is attending the meeting in person, please sign or stamp on the attendance notification form and carry it to the check-in desk on the day of the meeting. In the case that an agent(s) is entrusted to attend the meeting, the shareholder(s) shall sign or stamp on the proxy form and personally fill out the name and address of the agent, then deliver the proxy form to the Company’s appointed independent registrar, the Transfer Agency Department of SinoPac Securities, at least 5 days prior to the day of the meeting. The signed proxy form will serve as the sign-in card for agent(s) to represent your vote at the meeting.

F. Shareholders, proxies or proxy solicitors, and agents attending the meeting shall bring proof of identity.

G. If a proxy is solicited by the shareholder(s), the Company is required to compile details on the proxy solicitation parties and disclose such information on the Securities & Futures Institute (SFI) website no later than April 24th, 2026. Shareholder(s) can obtain information on proxy solicitation forms from the "Free proxy disclosure & related information system" in (http://free.sfi.org.tw), and enter the stock code for inquiry.

H. Shareholders may exercise their voting rights through the STOCKVOTE system of Taiwan Depository & Clearing Corporation: https://stockserv ices.tdcc.com.tw) during the period from April 26th, 2026, to May 23th, 2026.

I. A total of seven (7) directors (including three (3) independent directors) will be elected at this shareholders’ meeting. The candidates nominated under the candidate nomination system are as follows: Directors: Solar Jewelers Group Corp., represented by Phacharapon Phaiboonsuntorn; Hyperion Trading Co., Ltd., represented by Sarayuth Mungchitvitsavakorn; Orlog Global Co., Ltd., represented by Lin Chiu-Yi; Unique Global Investment Inc., represented by Lin Ching-Shan. Independent Directors: Yeh Kuang-Chou; Lin Wen-Hsiung; Lee Tien-Hsing. For information regarding the candidates’ education and professional experience, please refer to the Market Observation Post System (MOPS) at: https://mops.twse.com.tw

J. The Company’s vote tallying and verification institution is the Shareholder Services Department of Sinopac Securities Corporation.

K. The compliance of the above should be greatly abided and applied.

Sincerely,

Board of Directors

REGAL HOLDING CO., LTD.