【Formosa Petrochemical】Announcement: Board of Directors Approves New Capital Loans Exceeding 2% of Company's Net Value in Q3 115

1. Date of occurrence of the event: 2026/05/07 2. Companies receiving capital loans: (1) Company name: Taiwan Plastics Corporation (2) Relationship with the company providing capital loans: Investor whose investment in the company is accounted for by the equity method (3) Capital loan limit (NT$ thousands): 93,766,478 (4) Original capital loan balance (NT$ thousands): 3,000,000 (5) Amount of new capital loan (NT$ thousands): 4,500,000 (6) Is this a capital loan authorized by the board of directors for the chairman to disburse in installments or on a revolving basis to the same borrower: No (7) Capital loan balance as of the date of occurrence (NT$ thousands): 7,500,000 (8) Reason for this new capital loan: Working capital (1) Company name: Nanya Plastics Corporation (2) Relationship with the company providing capital loans: Investor whose investment in the company is accounted for by the equity method (3) Capital loan limit (NT$ thousands): 93,766,478 (4) Original capital loan balance (NT$ thousands): 3,000,000 (5) Amount of new capital loan (NT$ thousands): 4,500,000 (6) Is this a capital loan authorized by the board of directors for the chairman to disburse in installments or on a revolving basis to the same borrower: No (7) Capital loan balance as of the date of occurrence (NT$ thousands): 7,500,000 (8) Reason for this new capital loan: Working capital (1) Company name: Taiwan Chemical Fiber Corporation (2) Relationship with the company providing capital loans: Investor whose investment in the company is accounted for by the equity method (3) Capital loan limit (NT$ thousands): 93,766,478 (4) Original capital loan balance (NT$ thousands): 3,000,000 (5) Amount of new capital loan (NT$ thousands): 4,500,000 (6) Is this a capital loan authorized by the board of directors for the chairman to disburse in installments or on a revolving basis to the same borrower: No (7) Capital loan balance as of the date of occurrence (NT$ thousands): 7,500,000 (8) Reason for this new capital loan: Working capital (1) Company name: Formosa Marine Transport Investment Co., Ltd. (2) Relationship with the company providing capital loans: An invested company in which the company holds 19% (3) Capital loan limit (NT$ thousands): 75,013,182 (4) Original capital loan balance (NT$ thousands): 88,614 (5) Amount of new capital loan (NT$ thousands): 55,022 (6) Is this a capital loan authorized by the board of directors for the chairman to disburse in installments or on a revolving basis to the same borrower: No (7) Capital loan balance as of the date of occurrence (NT$ thousands): 143,636 (8) Reason for this new capital loan: Working capital (1) Company name: Formosa Heavy Industries Corporation (2) Relationship with the company providing capital loans: An invested company of an investor whose investment in the company is accounted for by the equity method (3) Capital loan limit (NT$ thousands): 93,766,478 (4) Original capital loan balance (NT$ thousands): 5,300,000 (5) Amount of new capital loan (NT$ thousands): 5,100,000 (6) Is this a capital loan authorized by the board of directors for the chairman to disburse in installments or on a revolving basis to the same borrower: No (7) Capital loan balance as of the date of occurrence (NT$ thousands): 10,400,000 (8) Reason for this new capital loan: Working capital 3. Collateral provided by the company receiving capital loans: (1) Content: None (2) Value (NT$ thousands): 0 4. Most recent financial statements of the company receiving capital loans: (1) Capital (NT$ thousands): 226,039,683 (2) Accumulated profit/loss (NT$ thousands): 125,133,336 5. Interest calculation method: Calculated daily 6. Repayment: (1) Conditions: Loan term 1 year, borrower may repay at any time (2) Date: Undetermined 7. Capital loan balance as of the date of occurrence (NT$ thousands): 33,543,636 8. Ratio of capital loan balance to net value of publicly issued company's most recent financial statements as of the date of occurrence: 8.94 9. Source of company's capital loans to others: Other 10. Other matters to be specified: Source of funds: Company's own funds. Taiwan Plastics Corporation: Capital NT$63,657,408 thousand, Accumulated profit/loss NT$30,085,826 thousand. Nanya Plastics Corporation: Capital NT$79,308,216 thousand, Accumulated profit/loss NT$26,719,853 thousand. Taiwan Chemical Fiber Corporation: Capital NT$58,611,863 thousand, Accumulated profit/loss NT$34,476,081 thousand. Formosa Marine Transport Investment Co., Ltd.: Capital NT$4,367,424 thousand, Accumulated profit/loss NT$41,082,910 thousand. Formosa Heavy Industries Corporation: Capital NT$20,094,772 thousand, Accumulated profit/loss NT$-7,231,334 thousand.