NPC — AGM Information 2026

May 22, 2026

NPC

National Petroleum Co., Ltd.

Notice of the 2026 Annual General Shareholders' Meeting

(Summary Translation)

I. The 2026 Annual General Shareholders' Meeting of the Company will be convened at 9:00 a.m. on Tuesday, June 23, 2026 (Registration will be accepted at 8:30 a.m. at the meeting venue) at 2F., No. 223, Sec. 3, Beixin Rd., Xindian Dist., New Taipei City. (Conference Hall 2C, Taipei Innovation City Convention Center). The agenda for the Meeting is as follows:

1. Reported matters:
   (1) The Company's 2025 Business Report.
   (2) Audit Committee's review of the 2025 annual final accounting books and statements.
   (3) Report on 2025 compensation for directors and employees.
   (4) Report on 2025 remuneration for directors.

2. Acknowledged matters:
   (1) The proposal for the 2025 Business Report and Financial Statements.
   (2) The proposal for the distribution of 2025 Profits.

3. Matters for Discussion:
   Proposals to release the board of directors and representatives from the non-competition restrictions.

4. Extemporary Motions.

II. Dividends: Cash dividend NTD$679,894,600, or NTD$2.2/share.

III. Enclosed herewith Attendance Card and Power of Attorney for Proxy. For those who wish to attend the present Shareholders Meeting in person, please sign/affix seal on the "Attendance Card" and submit it to the Shareholders Meeting. For those who wish to arrange a proxy to participate in the Shareholders Meeting, please sign/seal on the Proxy Attendance Card and write down in person the name and address of the proxy attendee, and mail/deliver to the Company's share administration agent, i.e., Yuanta Securities Registrar and Transfer Agency Department. (B1, No. 67, Sec. 2, Dunhua S. Rd., Da'an Dist., Taipei City 106045) at least five (5) days before

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the date scheduled for the meeting. An Attendance Card will then be issued for the proxy.

IV. The proxies shall be checked and verified by Yuanta Securities Registrar and Transfer Agency Department.

V. For any shareholders who openly solicit Proxy Attendance Cards, the Company will consolidate the solicitors' information and disclose them on the Securities & Futures Institute website on May 22, 2026. For an investor to inquire, please enter the address: https://free.sfi.org.tw, "Proxy Form Acquisition Related Inquiry System", click "Enter the Information of Public Announcement for Proxy Forms here" and input the terms of inquiry.

VI. The main contents of this general meeting of shareholders are listed in the notice of the meeting in addition to the matters stipulated in Article 172 of the Company Act, if any. Please also go to the MOPS website (http://mops.twse.com.tw) and click on "Single Company/e-Book/Annual Report & Meeting of Shareholders/Annual Report & Meeting of Shareholders (with DR info): input the terms of inquiry (Stock Code or year)/Meeting Proposal References" for the main contents.

VII. Shareholders of this Annual General Meeting may exercise their voting rights electronically during the period from May 22 to June 20, 2026. Please log in to the electronic voting platform of the Taiwan Depository & Clearing Corporation and follow the instructions to cast your vote. (Website: https://www.stockservices.tdcc.com.tw)

※ The meeting will be broadcast live online from the beginning of the Shareholders' meeting, so please use the QR code on the right to watch.

The Board of Directors

National Petroleum Co., Ltd.