SDI — AGM Information 2026

Apr 20, 2026

Notice for Annual General Shareholders’ Meeting

• I. The 2026 annual general shareholders’ meeting of SDI Corporation (the “Company”) will be convened at 9:30 a.m., Thursday, May 21, 2026 at SDI headquarters (No. 260, Sec. 2, Zhangnan Rd., Changhua City). The attendance registration will start at 9:00 a.m. at the meeting venue.

The agenda for the Meeting is as follows:

• (I) Report Items:

  1. 2025 Operation Results.

  2. Audit Committee's Review Report on Annual Final Accounting Books and Statements for 2025.

  3. Distribution and evaluation of compensation for non-executive employees, employees, and directors for 2025.

  4. Collection of 2025 remuneration to the directors.

  5. Execution progress of the first issuance of domestic unsecured convertible bonds in 2025.

  6. Matters regarding the merger with Chao Shin Metal Industrial Corporation.

• (II) Proposals:

  1. Business Report and Financial Statements for 2025.

  2. Earnings Distribution Plan for 2025.

• (III) Extempore Motions:

• II. The Company’s 2025 profit distribution has been proposed by the Board of Directors as follows:

  1. Cash dividend of NT$1.1 per share, amounting to NT$200,354,274. 
  
  2. Upon approval of the 2025 earnings distribution plan by the 2026 annual general shareholders’ meeting, the Chairman of the Board shall be authorized to determine the ex-dividend date of distribution. 
  

• III. With respect to the reasons and agenda items for this shareholders’ meeting that are required to be specified by Article 172 of the Company Act, please visit the English website of the Market Observation Post System (MOPS) (https://emops.twse.com.tw/) and go to Electronic Books Shareholders' meetings to search for more details.

• IV. Pursuant to Article 165 of the Company Act, the Company temporarily closes its books for share transfers from March 23, 2026, to May 21, 2026.

• V. In addition to making a public announcement, a copy of this Notice of Annual General Shareholders’ Meeting is also sent to all shareholders, along with a shareholder sign-in card and a proxy form. Please attend the meeting if you are available. If you wish to attend the meeting in person, please complete and seal or sign the sign-in card on the second slip and present it at the registration desk at the meeting venue on the day of the meeting. There is no need to return it by mail. If you wish to attend the meeting by proxy, please complete and seal or sign the proxy form on the second slip and then deliver it to the Company’s shareholder services agent, Registrar Agency Department of Capital Securities Corporation, five days before the shareholders’ meeting. The shareholder services agent will prepare a proxy sign-in card and send it to the shareholder proxy to be used for attending the meeting.

• VI. If any shareholder requires solicitation of a proxy to attend the meeting, the Company shall compile a summary statement of the solicitor and solicitation information for disclosure on the website of the Securities and Futures Institute (SFI) by April 20, 2026. Investors may visit SFI’s website: https://free.sfi.org.tw and search for details.

• VII. For this meeting, shareholders can vote online from April 21, 2026 to May 18, 2026 on the Taiwan Depository & Clearing Corporation (TDCC) Stockvote e-voting website according to its instructions (https://stockservices.tdcc.com.tw).

• VIII.The Company has appointed the Registrar Agency Department of Capital Securities Corporation to tally and verify the proxy forms collected for this shareholders' meeting.

Board of Directors SDI Corporation.