Cinco Materials Reports Suspected Violations of Securities and M&A Laws Regarding Shareholding Exceeding 34.83% by Wen Feng-Tai / Tianyi / Fuyu Ronggang-Related Entities

1. Date of Incident: 115/06/30

2. Company Name: Cinco Materials Technology Co., Ltd.

3. Relationship to Company (Please specify '本公司' or 'Subsidiary'):本公司 (Parent Company)

4. Cross-shareholding Ratio: Not applicable

5. Reason for Occurrence:

Recently, while preparing legally for the 2026 annual general meeting, including compiling the annual report and analyzing the top ten shareholders, Cinco Materials obtained shareholder registry data from the Central Depository & Clearing Corporation as of December 31, 2025, and May 2, 2026 (date of AGM). Upon comparison, the company discovered that the following entities collectively hold as high as 34.83% of its shares.

These entities were originally arranged by Wen Feng-Tai—currently prosecuted for illegal fundraising and facing severe penalties—to jointly hold shares in the company under the 'Tianyi Financial Group.' Many of the foreign institutional accounts involved exhibit abnormal patterns: rejecting financial statements, causing market volatility, and unusually coordinated active participation in director election voting.

Statistical consistency in holding periods, account details, financial institutions, and voting behaviors during both the annual and extraordinary shareholder meetings indicates excessive and highly abnormal activity. Notably, some accounts use foreign-investor structures to evade scrutiny, with domestic company representatives clearly not being the actual fund providers. Fund sources show significant irregularities, with unusually high concentration originating from regions such as Hong Kong, entering Taiwan's capital market.

The following shareholders are involved:

(1) Jingfu Investment Co., Ltd. (2) Yuanta Securities Co., Ltd. (Custodian) for Liu-Fu Fund Segregated Portfolio Co., Ltd. – Global Opportunity Portfolio Investment Account (3) Yonghui Investment Co., Ltd. (4) Xihe Investment Co., Ltd. (5) Genesis Investment Co., Ltd. (6) Bank SinoPac Securities Co., Ltd. (Custodian) for Bank SinoPac Securities (Asia) Ltd. Client Bank SinoPac (Asia) Agent Co., Ltd. Investment Account (7) Capital Securities (Custodian) for Liu-Fu Securities (Hong Kong) Co., Ltd. Investment Account (8) Citibank (Taiwan) Commercial Bank (Custodian) for Yuanta Securities (Hong Kong) Co., Ltd. – Client Investment Account (9) Hengtai International Investment Holding Co., Ltd. (10) Capital Securities Co., Ltd. (Custodian) for Qun*** (Hong Kong) *** Investment Account (11) Citibank Custody No. *** (Hong Kong) *** Investment Account (12) Wei* Investment Co., Ltd. (13) Deutsche Bank AG, Taipei Branch (Custodian) for *** Investment Account (14) CTBC Commercial Bank (Custodian) for Guo*** (Hong Kong) *** Investment Account – Client Account (15) Cathay United Bank (Custodian) for Hui* Securities (Hong Kong) *** Investment Account

These holdings are suspected of violating Article 43-1 of the Securities and Exchange Act and Article 27 of the Business Mergers and Acquisitions Act, among other relevant regulations.

6. Response Measures: Referral to regulatory authorities to investigate voting rights eligibility.

7. Other Matters to be Disclosed: This information qualifies as material information under Article 7, Paragraph 9 of the Enforcement Rules of the Securities and Exchange Act, as it significantly impacts shareholder rights or securities prices. No additional disclosures are required.