SNC — Proxy Solicitation & Information Statement 2026

May 11, 2026

Notice of Annual Shareholders Meeting

I. This is to notify those concerned that the Annual Shareholders Meeting of the Company in 2026 will be convened at Shangri-La Far Eastern, Taipei, B1 Level East Gate; 201 Tun Hwa South Road, Section 2, Taipei at 09:00 a.m. on June 11, 2026. The purpose of the meeting is as follows: (I) Reports: Annual Business and Financial Report of 2025; 2. Audit Committee's Review Report; 3. Report on the Distribution of Remuneration to Directors and Employees of 2025; 4. Report on the Distribution of Cash Dividends from Earnings of 2025; 5. Other reports. (II) Proposals: 1. Adoption of the Company's Annual Business Report and Financial Statement of 2025; 2. Adoption of the Company's Annual Earnings Distribution Table of 2025. (III) Discussion: Proposal to amend the Company's and its subsidiaries' Procedures for Asset Acquisition and Disposal. (IV) Extempore Motions.

II. The earnings distribution for 2025 was adopted by the Board. A total of NT$585,353,297 in cash dividends is distributed and NT$1.0 is distributed for each share.

III. According to Article 172 of the Company Act, the main contents should be available on the Market Observations Post System website at https://mops.twse.com.tw.

IV. Each shareholder of the Company is provided with one copy of Attendance Notice and one copy of Proxy Attendance Form. A shareholder who has decided to attend the meeting in person shall affix his/her signature or seal on the Attendance Notice (return of the form by post is not required), and bring it for registration on the day of the meeting. If a shareholder needs to appoint a proxy to attend, he/she shall affix his/her signature or seal on the Proxy Attendance Form, and fill in the proxy's name and address, which is to be sent back to the Company's agency: Transfer Agency Department of CTBC Bank Co., Ltd. at least five days before the meeting. The agency department will send the attendance certificate according to the information on the Proxy Attendance Form to the appointed proxy.

*V. If a shareholder wishes to enlist a proxy, the Company will produce a general checklist stating therein the information of solicitors and the soliciting information on May 11, 2026, and disclose it on the Securities & Futures Institute website (https://free.sfi.org.tw). Investors who wish to make an inquiry may visit the website, go to Free Inquiry System for Announced Information Concerning Proxies, and enter the search criteria.

VI. In this Annual Shareholders' Meeting, shareholders may exercise their voting rights in electronic means from May 12 to June 08, 2026. Please log in to the "Electronic Voting Platform for the Annual Shareholders Meeting" of Taiwan Depository & Clearing Corporation [https://www.stockvote.com.tw] and proceed in accordance with the instructions provided.

VII. Newly opened shareholders intending to submit their shareholder seal card can download the seal card from the CTBC Trust Online Banking website, which serves as our Company's securities agent.

VIII. The tallying and verification institution of the Proxy Attendance Form for this Annual Shareholders' Meeting is the Transfer Agency Department of CTBC Bank Co., Ltd.

IX. Please be advised and act accordingly.

Respectfully submitted to

Esteemed Shareholders

By the Board of Directors of Sincere Navigation Corporation

Meeting Notice Website: http://mops.twse.com.tw

http://www.snc.com.tw

For the convenience of readers and information purpose only, this English-version notice is a summary translation of the Chinese version and is not an official document of the shareholders' meeting. If there is any discrepancy between the English and Chinese version, the Chinese version shall prevail.