Sunko Ink Co., Ltd. — Proxy Solicitation & Information Statement 2026

May 13, 2026

SUNKO INK CO., LTD.

Notice of 2026 Annual General Shareholders Meeting

I. The 2026 Annual General Shareholders’ Meeting of Sunko Ink Corporation will be convened at 9:00 am on 16 June 2026, at No. 139, Renmei Rd., Dali Dist., Taichung City, Taiwan (R.O.C.) (Dali Factory - R&D Building).

The time and venue for attendance sign-ins will be at 8:30 am at the aforementioned address. The agenda for the meeting is as follows:

1. Management Presentation (Company Reports)
   (1) 2025 Business Report
   (2) 2025 Audit Committee’s Review Report
   (3) 2025 Status of Endorsement and Guarantee
   (4) 2025 Director’s Remuneration Report

2. Ratifications
   (1) To ratify the 2025 Business Report and Financial Statements
   (2) To ratify the 2025 Company’s Earnings Appropriation Proposal

3. Discussions
   (1) The Amendment of “Procedures for the Acquisition or Disposal of Assets”
   (2) The Amendment of “Articles of Incorporation”

4. Other proposal
   (1) Proposal to release the directors from non-competition restrictions

5. Extraordinary Motions

II. If the reason for convening the meeting falls under those specified in Article 172 of the Company Act, that shall explain the main content, please log on https://mops.twse.com.tw/mops/web/index), enter the Company’s stock code for e-book - Related materials of annual report and shareholders’ meeting - reference material of various shareholders’ meeting resolutions.

III. Pursuant to Article 165 of the Company Act, the share transfer will be closed from 18 April 2026 to 16 June 2026.

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IV. Attached please find one copy of the attendance card and proxy form with this meeting notice. If the shareholder(s) is attending the meeting in person, please bring along the signed or stamped attendance card to the venue on the day of the meeting. In the case that a proxy is entrusted to attend the meeting, the shareholder shall sign or stamp on the proxy form and personally fill out the name and address of the proxy, then deliver the proxy form to the Transfer Agency Department of SinoPac Securities at least 5 days prior to the day of the meeting so that the sign-in cards can be sent to the proxy accordingly.

V. In order to verify the identity, a shareholder, a proxy solicitor, or a proxy should bring along the ID card to the check-in desk.

VI. Shareholders may exercise their voting rights through the STOCKVOTE platform of Taiwan Depository & Clearing Corporation (http://www.stockvote.com.tw) during the period from 16 May 2026 to 13 June 2026.

VII. If a proxy is solicited by the shareholder(s), SUNKO INK CO., LTD. is required to compile details on the proxy solicitation parties and disclose such information on the Securities & Future Institute (SFI) website no later than 15 May 2025. Shareholder(s) can obtain information on proxy solicitation firms from the "Free proxy disclosure & related information system" (http://free.sfi.org.tw).

VIII. The Transfer Agency Department of SinoPac Securities is the proxy tallying and verification institution for this Meeting.

IX. Please acknowledge and comply.

Sincerely,

Board of Directors
SUNKO INK CO., LTD.

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開會通知書

一、茲訂於一一五年六月十六日(星期二)上午九時整，假台中市大里區仁美路139號(大里廠研發大樓)召開一一五年股東常會。本次會議受理股東開始報到時間為上午八時三十分，報到處地點同開會地點。會議主要內容：

(一)報告事項：1.114年度營業報告。2.審計委員會審查114年度決算表冊報告。3.114年度背書保證情形報告。4.114年度董事領取之酬金報告。

(二)承認事項：1.114年度營業報告書及財務報表案。2.114年度虧損撥補案。

(三)討論事項：1.本公司「取得或處分資產處理程序」修訂案。2.本公司「公司章程」修訂案。

(四)其他議案：1.解除董事就業禁止之限制案。

(五)臨時動議。

二、本次股東會召集事由若有依公司法第172條規定應列舉之議案主要內容說明，請至公開資訊觀測站(網址：https://mops.twse.com.tw)點選單一公司/電子文件下載/年報及股東會相關資料/年報及股東會相關資料(含存託憑證資料)，請輸入公司代號(或簡稱)及年度，查詢「股東會各項議案參考資料」或「議事手冊及會議補充資料」。

三、依公司法第165條規定自115年4月18日起至115年6月16日止停止股票過戶。

四、檢奉出席簽到卡及委託書各一份，貴股東如決定親自出席者，請於「出席簽到卡」上簽名或贖章後（無須寄回），於開會當日指定會場報到出席；如委託代理人出席時，請於「委託書」上簽名或蓋章，並親填受託代理人姓名及相關資料，交由受託代理人於「委託書」受託代理人處簽名或蓋章後，於開會五日前送達本公司股務代理人永豐金證券股務代理部，以憑寄發出席簽到卡予受託代理人。

五、股東、徵求人及受託代理人應於出席股東會詢，指帶身份證明文件，以備檢對。

六、本次股東會股東得以電子方式行使表決權，行使期間為：自115年5月16日至115年6月13日止，請經營入臺海集中儲管結算所股份有限公司「股東e服務」，依相關說明投票。【https://stockservices.tdcc.com.tw】。

七、如有股東徵求委託書，本公司將於115年5月15日前製作徵求人徵求資料彙總表冊揭露於證券有限公司，股東如欲查詢，可直接鍵入(網址 https://free.sfi.org.tw)至「委託書免費查詢系統」，輸入證券代號查詢。

八、本次股東常會委託書統計驗證機構為永豐金證券股份有限公司股務代理部。

九、敬請 查照辦理為荷。

此致

貴股東

三晃股份有限公司董事會

股啓