ATEN — Proxy Solicitation & Information Statement 2026

Apr 22, 2026

ATEN

Meeting Notice of Annual General Shareholders' Meeting

(Summary Translation)

The 2026 Annual General Shareholders' Meeting (the "Meeting") of ATEN International Company, Ltd. (the "Company") will be convened at 9:00 a.m., on Monday, May 25, 2026 at ATEN Headquarter (4F., No.125, Sec. 2, Datong Rd. Sijhih District., New Taipei City, Taiwan).

1. The agenda for the Meeting is as follows:

I. Report Items

(1) 2025 Business Report
(2) 2025 Audit Committee’s Review Report
(3) 2025 Employees’ Compensation and Directors’ Remuneration Report
(4) 2025 Distribution of Cash Dividends from Profits Report
(5) 2025 Related Party Transactions Report

II. Adoption Matters

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

III. Election

To Elect Directors

IV. Discussion

To Release the Prohibition on Directors from Participation in Competitive Business

V. Questions and Motions

1. The major item of the fourth quarter of 2025 earnings distribution adopted at the meeting of the Board of Directors is as follows:

Proposal to appropriate NT$ 298,677,915—from the distributable earnings as cash dividends at NT$ 2.5/each share.

1. (1) To elect ten directors (including five independent directors)

(2) The nominated candidates for directors including Sun-Chung Chen, Shang-Jen Chen, Yung-Da Lin, Shiu-Ta Liao, Se-Se Chen, and independent directors including Wei-Jenng Sun, Ching-Jen Chang, Chung-Jen Chen, Ming-Huei Hsieh, and Wei-Jen Chu, respectively.

(3) Please refer to MOPS for the details of the nominated candidates’ education and main working experience. (http://mops.twse.com.tw/)

1. In accordance with the stipulations of the Company Act, Article 172, its main content shall be described on the Market Observation Post System; for inquiries, please visit the

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ATEN

website at http://mops.twse.com.tw

1. For shareholders who decide to attend in person, please sign or affix your seal to the Attendance Card and bring it to the venue on the day of the meeting for registration. For shareholders attending by proxy, please sign or affix your seal to the Proxy Form, fill in the proxy’s name and address yourself, and mail the form to the Company’s stock transfer agent (CTBC Bank Transfer Agency Department) no later than 5 days before the meeting so that the proxy’s registration card can be issued.

2. Should any shareholder solicit a proxy, the Company shall compile their solicitation information into a summary chart and post it to the Securities & Futures Institute website on April 24, 2026. Interested shareholders may visit the site directly at https://free.sfi.org.tw “Free Proxy Inquiry System” to input their query.

3. Voting rights for this shareholders meeting may be exercised electronically. The voting shall take place from April 25, 2026 through May 22, 2026. Please visit the Taiwan Depository & Clearing Corporation’s “Electronic Voting Platform for Shareholders Meetings” at https://stockservices.tdcc.com.tw and follow the instructions to vote.

4. New shareholders who intend to submit a shareholder's signature card can download the signature card for use from our Transfer Agency's website of CTBC “Trust Online Banking”.

5. The counting and verification organization for this shareholders meeting’s proxies is the CTBC Bank Transfer Agency Department.

6. Shareholders are requested to take note and act accordingly.
   Sent to:
   Company Shareholders

Board of Directors
ATEN International Co., Ltd.