COSMO — Proxy Solicitation & Information Statement 2026

May 26, 2026

Cosmo Electronics Corporation
Meeting Notice for Annual Shareholders’ Meeting
(Summary Translation)

Type of Meeting : Physical meeting
Time : 9:00 a.m., June 26, 2026
Place : 2F., No. 916, Sec. 2, Yongxing Rd., Dongshan Township, Yilan County 269, Taiwan (R.O.C.) (Guangxing Community Center)

A. The agenda for the Meeting is as follows :

1. Report Items
   (1) The Business Report for Fiscal Year 2025.
   (2) The Audit Committee's Review Report on the Company's Business Report and Financial Statements for Fiscal Year 2025.
   (3) Directors and Supervisors and Managers and Employees Remuneration Distribution case for fiscal year 2025.
   (4) Annual Report of director compensation for fiscal year 2025.
   (5) Private Placement of Common Stocks management report for Fiscal Year 2025.
   (6) 2025 Related party transactions.

2. Acknowledgement Items
   (1) 2025 Business Report and Financial Report.
   (2) 2025 Annual Profit Distribution Table.

3. Discussion Items
   (1) Amendment to the Articles of Incorporation.
   (2) Amendment of "The Rules of Procedure for Shareholders' Meetings".
   (3) The Company proposes to conduct a private placement of common shares.

4. Other Business and Special Motions

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Cosmo Electronics Corporation

Meeting Notice for Annual Shareholders’ Meeting (Summary Translation)

B. In accordance with the Article 172 of Company Act which requests all information shall be available on the MOPS (https://mops.twse.com.tw)

C. The Attendance Card and the Proxy Form are enclosed. Shareholders who wish to attend the Meeting in person are requested to sign or affix their seal on the Attendance Card (no need to return it by mail) and bring it to the Meeting venue. Shareholders who wish to appoint a proxy are requested to personally sign or affix their seal on the Proxy Form, fill in the proxy’s name and address, and deliver it to the Transfer Agency Department of Concord Securities Co., Ltd. at least five (5) days prior to the Meeting date. Upon receipt, the Attendance Card will be mailed to the proxy.

D. The shareholder voting right could be exercised through the Internet during the period from May 27, 2026 to June 23, 2026. Please login to the TDCC (Taiwan Depository & Clearing Corporation) website (http://www.stockvote.com.tw) to exercise voting rights in accordance with the online instruction.

E. The Transfer Agency Department of Concord Securities Co., Ltd. is the institution responsible for proxy tallying and verification for this Annual Shareholders’ Meeting.

F. Please be advised and perform accordingly.

Sincerely Yours,

Board of Directors,

Cosmo Electronics Corporation