F.T.C — Proxy Solicitation & Information Statement 2026

May 25, 2026

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FORMOSA TAFFETA CO., LTD.

Notice of the 2026 Annual Shareholders’ Meeting

Time: 10:00 a.m., Friday, June 26st, 2026

Venue: No. 380, Sec. 6, Nanjing E. Rd., Taipei City, Taiwan.

For shareholders’ reference

I. The agenda for the Meeting is as follows:

1. Report Items
   (1) Business Report for 2025
   (2) Audit Committee’s Review Report on the 2025 Financial Statements
   (3) Report on 2025 Compensation of Employees and Directors
   (4) Report of the Distribution of Cash Dividends for 2025

2. Ratification Items
   (1) To ratify the Business Report and Financial Statements for 2026
   (2) To ratify the Proposal for the Distribution of 2026 Profits

3. Election Items (Including Directors and Independent Directors)

4. Discussion Items
   (1) To release the Director from non-competition restrictions.

5. Extraordinary Motions

II. The Board proposes to distribute NTD 0.5 per share in cash. The distribution date will be declared after the approval of the Annual Shareholders’ meeting. While the distribution of cash dividends to each individual shareholder is less than NTD 1, the distribution will be rounded to the nearest dollar.

III. Shareholders are eligible to exercise voting rights electronically in the general meeting from May 26, 2026 to June 23, 2026. Please log in to shareholder e-vote™ webpage of TDCC to vote according to relevant instructions. (https://stockservices.tdcc.com.tw)

IV. Registration time for the general meeting starts from 9:30 on June 26, 2026, and shareholders or proxies entrusted by the shareholders should present the attendance certificates, attendance signature cards or other attendance identifications at the meeting. Solicitors of power of attorney should bring identification documents for verification.

V. The Company will compile all solicitation information from shareholder solicitation letters of attorney in the Annual Shareholders’ Meeting and transmit to Securities & Futures Institute (SFI) as an electronic file on May 26, 2026. Shareholders are kindly requested to enter SFI website (https://free.sfi.org.tw) and type in stock code of the Company: 1434.

VI. The election of Directors (including Independent Directors) adopted the candidate nomination system, the shareholders with over 1% shareholding of the Company

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nominated 6 Directors and 3 Independent Directors Candidates. Please refer to "The related information of the Director and Independent Director Candidates."

VII. Forms of notice of attendance and the proxy are separately attached. If a shareholder decides to attend the meeting personally, please sign or seal on the "Notice of Attendance" (no need to send back) and bring it to the shareholder meeting for attendance. If a shareholder entrusts a proxy to attend the meeting, please sign or seal on the power of attorney, fill in the name and address information of that proxy in person, and send it to the stock affairs team of the Company five days before the meeting so as to further send the attendance card to the proxy.

VIII. Stock affair team of the Company will be in charge of statistical verification of power of attorney.

IX. For proposal references and English version of the meeting notice / meeting handbook for the general meeting, please check out Market Observation Post System website (https://mops.twse.com.tw) for inquires. Route: Basic Information / Electronic Books / Shareholders' meetings, and type in stock code "1434", year "115" for inquires.

X. Hereby notified.

Notification

1. For the amendment of contact address in this notice of attendance, please send to the Company before July 3, 2026 for further adjustment.

2. For shareholders who decide to attend the general meeting in person, please sign or seal on the notice of attendance. For shareholders who entrust a proxy to attend the meeting, please sign or seal on the power of attorney, fill in the name and address information of that proxy in person, and send it to the stock affairs team of the Company five days before the meeting so as to further send the attendance card to the proxy.

3. The cash dividend distribution date will be further decided after the approval is given in the shareholders' meeting. Cash dividends are distributed by remittance. Please check the bank account information in the "application form for registration of cash dividend remittance account" as attached, and only send back the application form with the amended bank account information and sealed to the Company before July 3, 2026 when the account information needs to be changed.

4. For the meeting attendees who require to reapply for the attendance certificates, please directly make the application at the venue before the meeting begins.

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The related information of the Director and Independent Director Candidates

1. The 8 Director Candidates:

Name	Education	Experience	Existing shareholding
Wong, Wen-Yuan, (Representative of Formosa Chemicals & Fibre Corporation).	Master in Industrial Engineering, University of Houston
Bachelor in Chemical Engineering, University of Houston	Current Appointment:
Chairman of Formosa Taffeta Co., Ltd.
Chairman of Formosa Resources Corp.
Chairman of Nan Ya Plastics Corp., U.S.A
Chairman of Nan Ya Plastics Corp., America
Chairman of Nan Ya Plastics Corp., Texas
Chairman of Chang Gung University Chairman of Ming Chi University of Technology Chairman of Chang Gung University of Science and Technology
Chairman of Wang Jhan Yang Charitable Foundation Director of Formosa Plastics Corp.
Director of Nan Ya Plastics Corp. Director of Formosa Chemicals & Fibre Corp. Director of Formosa Petrochemical Corp. Managing Director of Formosa Idemitsu Petrochemical Corp. Director of Nan Ya	630,022,431

3

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Name	Education	Experience	Existing shareholding
		Technology Corp.
Director of Nan Ya PCB Corp. Director of Formosa Sumco Technology Corp. Director of Formosa Advanced Technologies Co., Ltd. Director of Mai-liao Power Corp. Director of Formosa Heavy Industries Corp. Director of Formosa Plastics Transport Corp. Director of Formosa Ineos Chemicals Corp. Director of Formosa Ha Tinh Steel Co., Ltd. Director of Formosa Plastics Corp., U.S.A Director of Formosa Plastics Corp., America Director of Chang Gung Medical Foundation Director of Straits Exchange Foundation Head of Standing Member of Wang Jhan Ya ng Charitable Trust Fund
Experiences:
Chairman of Chinese National Federation of Industries Chairman of Taiwan Textile Federation,

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Name	Education	Experience	Existing shareholding
		R.O.C. Chairman of Formosa Chemicals & Fibre Corp. President of Formosa Chemicals & Fibre Corp. Chairman of Formosa Advanced Technologies Co., Ltd. Chairman of Mai-liao Power Corp. President of Mai-liao Power Corp. Chairman of Formosa Idemitsu Petrochemical Corp. Chairman of Formosa Ineos Chemicals Corp. Chairman of Formosa Ha Tinh Steel Co., Ltd. Director of Formosa Plastics Marine Corp. Director of Industrial Technology Research Institute
Hong, Fu-Yuan, (Representative of Formosa Chemicals & Fibre Corporation)	Bachelor in Department of Chemical Engineering, Chung Yuan Christian University	Current Appointment: Chairman of Formosa Chemicals & Fibre Corp. Experiences: Vice Chairman of Formosa Chemicals & Fibre Corp.	630,022,431

5

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Name	Education	Experience	Existing shareholding
Lee Ming-Chang, (Representative of Formosa Chemicals & Fibre Corporation)	Bachelor in Textile Engineering, Feng Chia University	Current Appointment: President of Formosa Taffeta Co.,Ltd.
Experiences: Executive Vice President of Formosa Taffeta Co.,Ltd.	630,022,431
Lee, Chien-Kuan, (Representative of Formosa Chemicals & Fibre Corporation)	Bachelor in Public Administration, National Chung Hsing University	Current Appointment: Executive Vice President of Formosa Taffeta Co.,Ltd.
Experiences: Deputy Executive Vice President of Formosa Taffeta Co.,Ltd.	630,022,431
Wu, Li-Jen, (Representative of Formosa Chemicals & Fibre Corporation)	Bachelor in Textile Engineering, Feng Chia University	Current Appointment: Vice President of Formosa Taffeta Co.,Ltd.
Experiences: Deputy Vice President of Formosa Taffeta Co.,Ltd.	630,022,431
Hsieh, Ming-Der	Degree of Mechanical Engineering, Kuang Wu Industry Junior College	Current Appointment: — Chairman of Yu Yuan Enterprise CO., Ltd.
—Chairman of Shun Chin Enterprise Co., Ltd.
Experiences: — President of Yu Yuan Enterprise CO., Ltd.	15,583,818

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1. The 3 Independent Directors Candidates:

Name	Education	Experience	Existing shareholding
Lin, Sheng-Chung	Doctorate in Institute of Natural Resources Management, National Taipei University	Current Appointment:
- Independent director of Taiwan Glass Industry Corp., and Century Iron and Steel Industrial Co., Ltd.
- Consultant of Chinese National Association of Industry and Commerce, Taiwan.
Experiences:
- Director of CPC Corporation, Taiwan
- Deputy Minister & Vice Minister of Ministry of Economic Affairs.
- Director-General of Construction Bureau of Taipei City Government.
- Permanent Representative of the Observer Delegation of ROC to the World Trade Organization.	0
Kuo, Nein-Hsiung	Master in Urban Planning, National Chung Hsing University	Current Appointment:
Director of Taiwan Puritic Corp.
Experiences:
- Supervisor of Taiwan Innovation	0

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Name	Education	Experience	Existing shareholding
		Development Corp.
- President of Taiwan Land Development Corp. and China Development Asset Management Corp.
- Deputy Director-General of Industrial Development Bureau, Ministry of Economic Affairs
- Chief Secretary & Section Chief of Construction and Planning Agency , Ministry of the Interior
Kuo, Chia-Chi	Bachelor in Accounting, National Taiwan University	Current Appointment:
- CPA of Kuo Chia-Chi Accounting Firm,
- Independent director of Fine Blanking & Tool Co., Ltd.,
- Director of Zongtai Real Estate Development Co., Ltd.
Experiences:
Auditor of Chung Yang and Yi Hsing CPA firms	3,000

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