Orient Semiconductor Electronics, Limited — Proxy Solicitation & Information Statement 2026

Apr 28, 2026

OSE A partner you can count on

Annual General Meeting Notice

(Summary Translation)

The 2026 Annual General Shareholders' Meeting of Orient Semiconductor Electronics, Limited ("OSE") will be convened at Headquarters 1F (Location at 1F, No. 9, Central 3rd Street, Nan-Zih District, Kaohsiung, Taiwan) at 9:00 a.m., Friday, May 29, 2026. The meeting type is physical shareholders' meeting.

1. The Agenda for the Meeting is as follows:

(1). Report Item

A. 2025 Business Report.
B. Audit Committee's Auditing Report.
C. 2025 Directors' Remunerations and Employees' Compensation.
D. The Cash Distribution of 2025 earnings.
E. Report on the issuance of domestic unsecured convertible corporate bonds.

(2). Ratification Item

A. To adopt 2025 Business Report and Financial Statements.
B. To adopt the proposal for 2025 earnings distribution.

(3). Extraordinary Motions

1. The Board of Directors resolved to distribution of dividends for the 2025 as follows:

(1) Cash dividend: In the amount of NT$658,976,333 at NT$1.0 per ordinary share.
(2) Cash dividend: In the amount of NT$15,602,573 at NT$0.19219725 per preferred share.

1. Please inquire the information at Market Observation Post System (the "MOPS") (http://mops.twse.com.tw) for more details.

2. Please find enclosed the "Notice of Attendance" and "Proxy Statement". Please sign or apply your seal to the "Notice of Attendance" if you plan to attend the Meeting in person on the Meeting date (Do NOT return this by mail). Members may appoint a proxy to attend the Meeting on his or her behalf by signing or applying their seal to this "Proxy Statement". Please send out such signed or sealed "Proxy Statement" to the Company's stock agency, the Transfer Agency Department of CTBC Bank, five (5) days prior to the Meeting date to allow the stock agency to deliver the "Attendance Card" to your proxy.

3. If members solicit proxies to attend the Meeting in their place, the Company will compile a proxy solicitation summary statement and disclose its contents on the Securities & Futures Institute (SFI)'s website on April 28, 2026. Members can access the website through SFI's web address (http://free.sfi.org.tw) for relevant information.

4. The voting at this Meeting can be exercised by way of electronic method from April 29, 2026 to May 26, 2026. The members/shareholders can log in Electronic Voting Platform of Shareholders' Meeting established by Taiwan Depository and Clearing Corporation (https://stockservices.tdcc.com.tw) directly and cast the vote according to the relevant explanations.

5. The proxies shall be tallied and verified by the Transfer Agency Department of CTBC Bank.

To Shareholder

Board of Directors

Orient Semiconductor Electronics, Limited