TEWC — Proxy Solicitation & Information Statement 2026

May 15, 2026

Notice of the 2026 Annual General Meeting of TA TUN ELECTRIC WIRE & CABLE CO., LTD.

I. 2026 Annual General Meeting of Shareholders (the “Meeting”) of Ta Tun Electric Wire & Cable Co., Ltd. will be convened at 9:00 a.m., on June 17, 2026 (Wednesday), at the R101 Conference Room, Aspire Resort, No. 428, Kewang Rd., Longtan Dist., Taoyuan City 325016, Taiwan.

The agenda of the meeting is as follows:

(I) Report Matters:
1. 2025 business report.
2. The Audit Committee's review on the 2025 financial statements.
3. Distribution of the remuneration to employees and directors for 2025.
4. Distribution of cash dividends from earnings for 2025.
5. Establishment of the “Procedures for Ethical Management and Guidelines for Conduct.”

(II) Matters for Ratification:
1. The 2025 Business Report and Financial Statements.
2. 2025 earnings distribution proposal.

(III) Matters for Discussion:
1. Amendments to the Articles of Incorporation.
2. Amendments to the Rules of Procedure for Shareholders’ Meetings.
3. Amendments to the Procedures for Acquisition or Disposal of Assets.

(IV) Other Matters:
1. The proposal to remove the non-competition restriction on the Company’s directors.

(V) Extempore motions.

II. The Company’s 2025 earnings distribution proposal was resolved by the Board of Directors as follows: cash dividends of NT$8 per share were distributed and paid on April 15, 2026.

III. The proposals submitted at the current shareholders’ meeting that require disclosure of key information under Article 172 of the Company Act have been posted on the MOPS website at https://emops.twse.com.tw/server-java/t58query (Click on “Electronic Books”). After entering the company code and year, shareholders may view reference materials for each proposal, the meeting handbook, and supplementary materials for the meeting.

IV. Enclosed please find the shareholders’ meeting notice and proxy form. If you decide to attend the meeting in person, please sign or stamp the third copy of the notice (not required to be sent back to us) and present it for check-in on the day of the meeting (the registration opens at 8:30AM at the same location as the meeting is held). If a proxy attends the meeting on behalf of you, please sign or stamp the third copy of the proxy form, complete the proxy’s name and address and sign or stamp it, and then send it back to the Company’s shareholders service agent, Shareholders Service Agency Department, KGI Securities Co., Ltd. (5F, No. 2, Sec. 1, Chongqing S. Rd., Taipei City) at least five days before the meeting so that we may send the attendance card to the proxy. If you haven’t received your attendance

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card before the meeting, please bring your ID card to the venue to apply for re-issuance of the attendance card.

V. Any shareholder, solicitor and proxy shall bring their ID cards for verification when attending a shareholders’ meeting.

VI. According to Article 26-2 of the Securities and Exchange Act, a company that has issued stock under this Act, when giving a shareholders meeting notice to shareholders who own less than 1,000 shares of registered stock, may do so in the form of a public announcement. Therefore, no notice will be sent separately.

VII. Shareholders may exercise their voting rights electronically for this shareholders’ meeting. The exercise period shall be from May 16, 2026 to June 14, 2026. Please log in to the TDCC eVoting Platform [website: https://stockservices.tdcc.com.tw] and vote per the relevant instructions.

VIII. The institution in charge of counting and verification of proxy form for this shareholders’ meeting refers to the Shareholder Services Department of KGI Securities Co., Ltd.

IX. If there is any solicitation of proxy forms at the annual general meeting, the Company will upload the summary table of the data requested by the solicitor to the SFI website (https://free.sfi.org.tw) before May 15, 2026, as required. Please refer to the instructions on the website for the query procedures.

X. No souvenirs will be distributed at the annual general meeting.

The Board of Directors of TA TUN ELECTRIC WIRE & CABLE CO., LTD.