uPI — AGM Information 2026

Apr 17, 2026

Meeting Notice
for
Annual General Shareholders' Meeting
(Summary Translation)

The 2026 Annual General Shareholders' Meeting (the "Meeting") of uPI Semiconductor Corp. (the "Company") will be convened at 10:00 a.m. (Shareholder attendance registrations will be accepted at least 30 minutes prior to the time the meeting commences), Wednesday, May 20, 2026, at the Multifunction Meeting Room, located at 2F., No.3, Taiyuan 1st Street, Zhubei City, Hsinchu County, Taiwan. (Tai Yuen Hi-Tech Industrial Park)

1. The agenda for the Meeting is as follows:

I. Report Items
(1) Business Report of 2025.
(2) Audit Committee's Review Report of 2025.
(3) Report of Employees' Compensation for 2025.
(4) Report of Directors' Compensation for 2025.
(5) Amendment to the "Sustainable Development Best Practice Principles."

II. Ratification Items
(1) To adopt 2025 Business Report and Financial Statements.
(2) To adopt the proposal for distribution of 2025 profits.

III. Discussion Items
(1) Amendment to the "Rules and Procedures of Shareholders Meetings."
(2) Amendment to the "Procedures for Acquisition or Disposal of Assets."

IV. Extemporary motions.

1. The major items of the proposal for distribution of 2025 profits adopted at the Board of Directors meeting are as follows:

I. The distribution of cash dividends is NT$4.6 per share.

1. If the Company decides to convene a meeting pursuant to Article 172 of the Company Law, the relevant electronic files will be made available on the Market Observation Post System at [Website: http://mops.twse.com.tw]. Please select "Specific Company" under the "Electronic Documents" section, enter the stock code, year, and click "GO" to access the meeting materials.

2. In accordance with Article 165 of the Company Law, March 22, 2026 to May 20, 2026, is the share transfer prohibition period.

3. In addition to the announcement from MOPS, the Company will mail the official notice of the meeting, and one Power of Attorney in hopes that all shareholders could participate in the Meeting. If joining in person, please fill on the "Notice of Attendance" for registration or register in person on the meeting day. If entrusting others to participate, please read and fill up carefully the notes of Power of Attorney and send back the "Attendance Power of Attorney". Also, please send the required documents to our stock

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administration office 5 days before the meeting starts and use the voucher to attend the meeting.

1. If any situation for the case of seeking the Power of Attorney in public, which case the company will submit to the Securities & Futures Institute (SFI) [Website: http://free.sfi.org.tw] no later than April 17, 2026. Please go on the website if requiring any further information. (Stock Code: 6719)

2. Shareholders may exercise their voting rights through electronic notifications at the General Shareholders Meeting. Relevant information is shown below:

I. Duration for exercising shareholders voting rights: April 18, 2026, to May 17, 2026.
II. Electronic voting platform: Taiwan Depository & Clearing Corporation (TDCC) or visit [Website: http://www.stockvote.com.tw].

1. Of this Meeting the statistic verification agencies of the Power of Attorney will be Grand Fortune Securities Co. Ltd. (Stock Transfer Agency Department).

2. No souvenirs will be offered in the Meeting.

3. During the meeting day, shareholders can watch the live stream of the 2026 Annual Shareholders' Meeting by scanning the QR Code provided below. Alternatively, shareholders can also access the live stream by click the [website: https://reurl.cc/epOLMQ].

1. Please kindly follow the related information and regulations above.

Board of Directors
uPI Semiconductor Corp.