Vti — Proxy Solicitation & Information Statement 2026

May 26, 2026

Meeting Notice for Annual Shareholders' Meeting

I. The 2026 Annual Shareholders' Meeting (the “Meeting”) of Vactronics technology inc. will be convened at 10:00 AM on June 26, 2026, at No. 336, Hexing Rd., Zhunan Township, Miaoli, Taiwan, R.O.C.. 【Meeting Room, 2F, Toufen cum Zhunan and Tonglou Industrial Area Service Center】 (Acceptance of shareholder registration beginning from 9:30 AM, the location of the registration office is the same as the meeting location.)

The agenda for the Meeting is as follows:

i. Matters to be Reported

1. Annual Report on Operations of the Company for 2025.
2. Report by Audit Committee of the Company.
3. Report on the Distribution of Employee Compensation and Directors' Compensation of the Company for 2025.
4. Report on the Execution Status of the Company’s Second Repurchase of Its Own Shares

ii. Matters to be Reviewed

1. Annual Report on Operations and Financial Statements of the Company for 2025.
2. Statement of Appropriation of Surplus for 2025.

iii. Extempore Motions

II. According to Article 172 of the Company Law, the main content shall be stated in the Market observation Post System, 【Please refer to the website: http://mops.twse.com.tw】

III. Enclosed please find the "Notice of Attendance" and "Proxy Statement", please sign or seal in the "Notice of Attendance" if you intend to attend the Meeting in person on the Meeting date (Do NOT return by post). Member may appoint a proxy to attend the

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Meeting on his or her behalf by signing or sealing this "Proxy Statement" with duly filled-out name and address of the proxy. Please send out such signed or sealed "Proxy Statement" to the Company's stock agency, the Transfer Agency Department of CTBC Bank, five (5) days prior to the Meeting date to allow stock agency to deliver the "Attendance Card" to the proxy.

IV. If Members solicit proxies for the Meeting, the Company will compile a summary statement of proxy solicitation and disclose the content in the website of Securities & Futures Institute ("SFI") on May 26, 2026. Investors can link with SFI's web address (https://free.sfi.org.tw) for relevant information.

V. This Meeting will adopt electronic voting as one of the methods for Members to vote for resolutions. For voting on line, the electronic voting platform of Taiwan Depositary and Clearing Corporation will be available at https://www.stockvote.com.tw, beginning from May 27, 2026 to June 23, 2026. Please log in and vote in accordance with the instructions.

VI. The proxies shall be tallied and verified by the Transfer Agency Department of CTBC Bank.

VII. Please fill out the documents as described in the information contained herein.

To Shareholder of Vactronics technology inc.

Board of Directors of Vactronics technology inc.