Winning Investment Holdings Corrects Related-Party Transaction Report for June 2026

1. Date of Event: 115/08/14

2. Company Name: Winning Investment Holdings Co., Ltd.

3. Relationship with Company (Enter '本公司' or 'Subsidiary'):本公司

4. Cross-shareholding Ratio: Not applicable

5. Reason for Occurrence: Correction of the company's related-party transaction report for June 115

6. Item/Report Name to be Corrected: Detailed Report of Related-Party Transaction Disclosures

7. Amounts/Content/Page Before Correction:

[Purchases]

(1) Related Party Name: Chung Wei Energy Co., Ltd. Amount Purchased This Month (in thousands): 7,318 Percentage of Consolidated Statement Purchases This Month: 0.65% Year-to-Date Cumulative Purchase Amount (in thousands): 16,503 Percentage of Year-to-Date Consolidated Statement Cumulative Purchases: 0.23%

(2) Related Party Name: Sun Win Power Co., Ltd. Amount Purchased This Month (in thousands): 2,248 Percentage of Consolidated Statement Purchases This Month: 0.20% Year-to-Date Cumulative Purchase Amount (in thousands): 7,808 Percentage of Year-to-Date Consolidated Statement Cumulative Purchases: 0.11%

[Accounts Receivable]

(1) Related Party Name: Sheng Ri Energy Storage Technology Co., Ltd. Change in Accounts Receivable This Month (in thousands): -50,000 Year-to-Date Cumulative Accounts Receivable (in thousands): 521,500 Percentage of Year-to-Date Consolidated Statement Cumulative for This Item: 24.18%

(2) Related Party Name: Star Winning Power Co., Ltd. Change in Accounts Receivable This Month (in thousands): 43,467 Year-to-Date Cumulative Accounts Receivable (in thousands): 43,467 Percentage of Year-to-Date Consolidated Statement Cumulative for This Item: 2.02%

8. Amounts/Content/Page After Correction:

[Purchases]

(1) Related Party Name: Chung Wei Energy Co., Ltd. Amount Purchased This Month (in thousands): 5,031 Percentage of Consolidated Statement Purchases This Month: 0.45% Year-to-Date Cumulative Purchase Amount (in thousands): 14,216 Percentage of Year-to-Date Consolidated Statement Cumulative Purchases: 0.20%

(2) Related Party Name: Sun Win Power Co., Ltd. Amount Purchased This Month (in thousands): 610 Percentage of Consolidated Statement Purchases This Month: 0.05% Year-to-Date Cumulative Purchase Amount (in thousands): 6,170 Percentage of Year-to-Date Consolidated Statement Cumulative Purchases: 0.09%

[Accounts Receivable]

(1) Related Party Name: Sheng Ri Energy Storage Technology Co., Ltd. Change in Accounts Receivable This Month (in thousands): -52,086 Year-to-Date Cumulative Accounts Receivable (in thousands): 519,414 Percentage of Year-to-Date Consolidated Statement Cumulative for This Item: 24.09%

(2) Related Party Name: Star Winning Power Co., Ltd. Change in Accounts Receivable This Month (in thousands): 27,963 Year-to-Date Cumulative Accounts Receivable (in thousands): 27,963 Percentage of Year-to-Date Consolidated Statement Cumulative for This Item: 1.30%

9. Response Measures: Publish material information on the public information observation station and correct related disclosure items

10. Other Matters to be Disclosed: None