CHIEN KUO — Proxy Solicitation & Information Statement 2026

Apr 24, 2026

Chien Kuo Construction Co., Ltd. Notice of 2026 Annual Shareholders' Meeting

I. The 2026 annual shareholders' meeting will be convened at 09:00 a.m., Friday, May 29, 2026, (Registration time for shareholders will start at 08:30 a.m. at the venue specified for the meeting.) at B1., No. 85, Sec. 4, Roosevelt Rd., Zhongzheng Dist., Taipei City (GIS NTU Convention Center/Locke). The main content of the meeting includes:

(I) Report items:
1. The Company's 2025 annual business report.
2. Audit Committee's review report on the 2025 annual financial statements.
3. Report on the distribution of remuneration for employees and directors in 2025.
4. Report on the payment of directors' remuneration for 2025.

(II) Approval and discussion items:
1. The Company's 2025 business report, individual financial statements, and consolidated financial statements.
2. The Company's 2025 earnings distribution proposal.
3. Adoption of amendments to the Company’s "Procedures for Acquisition or Disposal of Assets."

(III) Extempore motions.

II. Dividend distribution main content: A cash dividend of NT$665,280,277, which equates to a distribution of NT$3.30 per share.

III. Please submit one copy each of the attendance registration card and the proxy form. If you, as a shareholder, decide to attend in person, please sign or stamp the "Attendance Registration Card" and bring it to the venue on the day of the meeting for registration. If you appoint a proxy to attend, please sign or stamp the proxy form and personally fill in the proxy's name and address. Send the completed forms to the Company's share registrar, Yuanta Securities Co., Ltd., Shareholder Services Division (B1, No. 67, Section 2, Dunhua South Road, Da'an District, Taipei City 106045), at least five days before the shareholder meeting, so that the attendance registration card can be sent to the appointed proxy. A proxy who wishes to participate in the meeting via video conference should complete the "Proxy's Declaration of Intention to Participate in the Shareholders' Meeting via Video Conference" form and submit it to the Company's Stock Agency, Yuanta Securities Corp, no later than 4:00 p.m. on May 26, 2026.

IV. The statistics & verification institute of the Company is the Stock Registrar Department of Yuanta Securities Co., Ltd.

V. If any shareholder requests a proxy form, the Company will compile a summary of the requesters' information and

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disclose it on the Securities and Futures Institute (SFI) website on April 28, 2026. Investors who wish to inquire about this may visit the "Free Proxy Inquiry System" on https://free.sfi.org.tw and enter their search criteria.

VI. Where the main content of the upcoming shareholders' meeting includes matters required to be disclosed under Article 172 of the Company Act, in addition to those already listed in the notice of convocation, please refer to "Single Company/Electronic Document Download/Annual Report and Shareholders' Meeting Related Information/Annual Report and Shareholders' Meeting Related Information (including depository receipt data)" on the Market Observation Post System website (https://mops.twse.com.tw) and enter you search criteria (company stock code or abbreviation and year), then go to "Shareholders' meeting reference materials for various proposals (or agenda booklet and meeting supplementary materials)."

VII. At the shareholders' meeting, shareholders may exercise their voting power by way of electronic transmission, the period of exercise is from April 29, 2026 to May 26, 2026. Please sign in to the shareholders' meeting electronic voting platform "TDCC STOCKVOTE" on the website of Taiwan Depository & Clearing Corporation and vote in accordance with relevant instructions. [Website: https://stockservices.tdcc.com.tw]

VIII. There will be no distribution of souvenirs at this shareholders' meeting.

※ A live online broadcast will be available starting from the commencement of the shareholders' meeting on the meeting day. Please search for "Chien Kuo Construction Co. Ltd Shareholders' Meeting" on YouTube (https://www.youtube.com/@ckgroupcsr) to view the live broadcast of the Company's 2026 annual shareholders' meeting.

Sincerely, Board of Directors, Chien Kuo Construction Co., Ltd.