Taiyen — Proxy Solicitation & Information Statement 2026

May 13, 2026

Meeting Notice

I. The 2026 shareholders’ meeting will be held on June 24, 2026, at 10:00 am at No. 297, Section 1, Jiankang Road, South District, Tainan City (Great Auditorium of the Headquarters). Shareholder sign-in time: from 9:30AM; sign-in location: same place as the meeting. Major agenda for the meeting is below:

(I) Report Items:

1. 2025 Business Report of the Company.
2. Audit Committee’s review of the 2025 annual final accounting report of the Company.
3. Report on the 2025 employees' and directors' remuneration.
4. Report the result of execution on the share conversion between the Company and Taiyen Green Energy Co., Ltd.

(II) Ratification Items:

1. 2025 Business Report and Financial Statements of the Company.
2. 2025 Earnings Distribution of the Company.

(III) Extemporary Motions

II. The main content of the proposed distribution of the Company’s earnings: Shareholders’ cash dividend of NT$280,000,000, at NT$1.4 per share.

III. If the shareholder(s) is attending the meeting in person, please sign or stamp on the “Attendance check-in card” and submit it to the check-in desk on the day of the meeting. If a shareholder entrust an agent to attend the meeting, please sign or stamp on the “Letter of Proxy” with the name and address of the entrusted agent, and deliver it to the stock affairs service division of China Trust Commercial Bank (CTBC Bank) five days before the meeting to facilitate the sending of sign-in card to the entrusted agent.

IV. ※ If a shareholder solicits for the proxy, the Company will make a summary form of solicitor soliciting information on May 22, 2026 and expose it on the website of the Securities and Futures Institute. If investors want to inquire, they can directly type the link (https://free.sfi.org.tw) to the “Free proxy disclosure & related information system” and enter the inquiry conditions for searching.

V. The voting rights can be exercised electronically at this shareholders meeting. The exercise period is from May 25, 2026 to June 21, 2026. Please log in to the “Electronic Voting Platform of the Shareholders’ Meeting [https://stockservices.tdcc.com.tw]” at the website of Taiwan Depository & Clearing Corporation (TDCC), and vote in accordance with the instructions.

VI. The Company’s compilation and verification of its letters of proxy of the shareholders’ meeting is exclusively conducted by the “stock affairs service division of CTBC Bank.”

VII. Please be duly noted and spare your time for a presence.

To:

Shareholders

From: The Board of Directors, Taiyen Biotech Co., Ltd.