SUNTY — Proxy Solicitation & Information Statement 2026

Apr 23, 2026

Meeting Notice for Annual Shareholders' Meeting

(Summary Translation)

1. The 2026 Annual Shareholders' Meeting (the "Meeting") of Sunty Development Company Limited (the "Company") will be convened at 9:00 a.m. on Friday, May 29, 2026 (check-in will start from 8:30 a.m.), at 11F., No.97, Sec. 2, Dunhua S. Rd., Da-an District, Taipei, Taiwan.

2. Agenda:

2.1 Report items:
(a). 2025 business overview.
(b). Audit Committee’s audit of 2025 final accounting reports.
(c). 2025 distribution of remuneration for employees and directors.

2.2 Proposed resolutions:
(a). Adoption of 2025 business report and final accounting reports.
(b). Adoption of 2025 earnings distribution proposal.

2.3 Provisional motions.

1. The Company’s board of directors passed the 2025 earnings distribution as follows:
   Cash Dividend: Total amount of TWD $176,157,155, equivalent to TWD $0.5 per share.

2. Pursuant to Article 165 of the Company Act, the suspension of changes to the shareholders register starts from March 31, 2026 and ends on May 29, 2026.

3. If shareholders are unable to attend in person, they may appoint a proxy. The proxy authorization form must be filled out, signed or stamped, and sent to the designated proxy agent (Fubon Securities Co., Ltd., Stock affairs agency) no later than 5 days before the Meeting date. Address: 11th Floor, No. 17, Xuchang St., Zhongzheng District, Taipei City.

4. The Company will prepare a summary statement containing the data solicited by the shareholders through solicitation for the proxy before April 28, 2026 and disclose the content on the Securities and Futures Institute (SFI) website. If an investor intends to make an inquiry, he or she can visit the website at http://free.sfi.org.tw, go to the free inquiry system for data related to announcement of proxy statement, click “Enter inquiry of Meeting data concerning announcement of proxy statement” and key in the item to search (Company Code: 3266).

5. 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. For a regular shareholders Meeting, such notice may be given 30 days before the Meeting date.”

6. Shareholders may vote electronically from April 29 to May 26, 2026. They must use a Certificate Authority (CA) certificate (natural person certificate, securities certificate, bank certificate, or Chunghwa Post certificate) to log in to the “Stock Vote” section of the Taiwan Depository & Clearing Corporation (TDCC) (website: https://stockservices.tdcc.com.tw). For proxy voting, the agent must bring the completed

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proxy form to the Meeting and present proper documentation to vote on behalf of the shareholder.

1. Meeting-related information (including shareholders' Meeting handbooks, annual reports, and proxy-related materials) can be found on the MOPS website (https://mops.twse.com.tw/mops/web/home) under the "Shareholders' Meeting" → "Electronic Files/Annual Reports" section.

2. Souvenirs will not be distributed at this year's Regular Shareholders' Meeting.

To Shareholder

Board of directors of Sunty Development Co., Ltd.