YC — Proxy Solicitation & Information Statement 2026

May 14, 2026

YC INOX CO., LTD.
Meeting Notice for the 2026 Annual General Shareholders' Meeting
(Summary Translation)

A. The 2026 Annual General Shareholders' Meeting (the "Meeting") of YC INOX Co., Ltd. (the "Company") will be held as a Physical shareholders meeting at 9:00 a.m. on Tuesday, June 16, 2026, on the 5th Floor of the Administration Building at YC INOX's Headquarters, located at No.270, Sec. 4, Jungshan Rd., Shijou Township, Chang-Hwa, Taiwan.

The agenda for the Meeting is as follows:

1. Report Items
   (1) 2025 Business report
   (2) 2025 Audit Committee's review report
   (3) 2025 employees' profit sharing and directors' compensation
   (4) Execution status of the 4th domestic unsecured convertible corporate bonds
   (5) Execution status of endorsement, guarantee and lending funds to other parties

2. Proposed Resolutions for Ratification
   (1) 2025 Financial Statements
   (2) 2025 Earnings Distribution

3. Proposed Resolutions for Discussion
   (1) Cash dividends distributed from capital surplus

4. Extraordinary Motions

B. The proposal for the distribution of earnings has been approved by the Board of Directors as follows: A total of NT$528,995,589 from the 2025 earnings and capital surplus will be distributed as cash dividends to shareholders. Based on the number of outstanding shares, the cash dividend from earnings is approximately NT$0.2 per share, and the cash distribution from capital surplus is approximately NT$0.8 per share, totaling an estimated NT$1.0 in cash per share. Should the number of outstanding shares change subsequently, affecting the dividend rate, the Board of Directors shall be authorized by the Shareholders' Meeting to handle all adjustments to the earnings distribution table and other related matters while maintaining the same payout ratio. Fractional amounts of cash dividends less than NT$1 shall be transferred to the Company's Employee Welfare Committee.

C. If there are any matters in the meeting notice that require explanation according to Article 172 of the Company Act, please log in to the Market Observation Post System (website: https://mops.twse.com.tw/mops/web/index), enter the Company's securities code, and select the electronic books and shareholders' meeting information for reference on various proposals of the shareholders' meeting.

D. Pursuant to Article 165 of the Company Act, the shareholder register will be closed from April 18, 2026 to June 16, 2026.

E. One copy of the attendance sign-in card and proxy form is attached to this meeting notice. If the

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shareholder plans to attend the meeting in person, please sign or stamp on the attendance sign-in card and bring it to the check-in desk on the day of the meeting (please do not return the form back by mail). In the case that a proxy is designated to attend the meeting, the shareholder shall sign or stamp on the proxy form, personally fill out the name and address of the designated proxy, and have the designated proxy to sign or stamp on the form. Please then deliver the completed proxy form to the Register & Transfer Agency Department of SinoPac Securities at least 5 days prior to the day of the meeting, as a proof for SinoPac Securities to mail the attendance sign-in card to the designated proxy.

F. Shareholders, solicitors, and designated proxies shall present valid identification documents for verification when attending the shareholders' meeting.

G. If there is any solicitation by the shareholders, the Company is required to compile solicitor's solicitation data summary and disclose such information on the Securities & Futures Institute (SFI) website by May 15, 2026. Shareholders may inquire information on the "Free Proxy Disclosure & Related Information System" by searching page on https://free.sfi.org.tw.

H. Shareholders may exercise their voting rights electronically via the STOCKVOTE platform of Taiwan Depository & Clearing Corporation (https://stockservices.tdcc.com.tw) during the period from May 16, 2026 to June 13, 2026.

I. The Register & Transfer Agency Department of SinoPac Securities is designated as the proxy tallying and verification institution for the Company.

J. Your attention and compliance will be appreciated.

Sincerely,

Board of Directors

YC INOX Co., Ltd.