4th Supplementary Agreement of New Generation Rolling Stock(E321/E322)

1.Name and nature of the underlying asset (e.g., land located at Sublot XX,Lot XX, North District, Taichung City):
   4th Supplementary Agreement of New Generation Rolling Stock(E321/E322)
2.Date of occurrence of the event: 2025/11/25
3.Date of the board of directors resolution: NA
4.Other approval date: 2025/11/25
5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping),unit price, and total transaction price:
  (1)Transaction volume: 1 item.
  (2)Total Transaction price: approx. NTD 45,690,400.
6.Trading counterparty and its relationship with the Company (if the trading counterparty is a natural person and 
   furthermore is not a related party of the Company, the name of the trading counterparty is not required to be 
   disclosed): Hitachi Toshiba Supreme Consortium (HTSC), which is not a related party of THSRC
7.Where the trading counterparty is a related party, announcement shall also be made of the reason for choosing the
   related party as trading counterparty and the identity of the previous owner, its relationship with the Company 
   and the trading counterparty, and the previous date and monetary amount of transfer: Not applicable
8.Where an owner of the underlying assets within the past five years has been a related party of the Company, the 
   announcement shall also include the date and price of acquisition and disposal by the related party, and its 
   relationship with the Company at the time of the transaction: Not applicable
9.Projected gain (or loss) through disposal (not applicable for acquisition of assets; those with deferral should provide
   a table explaining recognition): Not applicable
10.Terms of delivery or payment (including payment period and monetary amount), restrictive covenants in the contract, 
     and other important terms and conditions: Terms of delivery and payment: to be carried out in accordance with the
     relevant contract
11.The manner of deciding on this transaction (such as invitation to tender, price comparison, or price negotiation),
      the reference basis for the decision on price, and the decision-making unit:
      (1)The manner of deciding on this transaction and the reference basis for the decision on price: Conducted in accordance
            with THSRC bidding documents and price negotiation. 
      (2)Decision-making department: Chairman.
12.Name of the professional appraisal firm or company and its appraisal price: Not applicable
13.Name of the professional appraiser: Not applicable
14.Practice certificate number of the professional appraiser: Not applicable
15.The appraisal report has a limited price, specific price, or special price: Not applicable
16.An appraisal report has not yet been obtained: Not applicable
17.Reason for an appraisal report not being obtained: Not applicable
18.Reason for any significant discrepancy with the appraisal reports and opinion of the CPA: Not applicable
19.Name of the CPA firm: Not applicable
20.Name of the CPA: Not applicable
21.Practice certificate number of the CPA: Not applicable
22.Broker and broker's fee: Not applicable
23.Concrete purpose or use of the acquisition or disposal: Increase the operation capacity of THSRC
24.Any dissenting opinions of directors to the present transaction: Not applicable
25.Whether the counterparty of the current transaction is a related party: No
26.Date of ratification by supervisors or approval by the audit committee: NA
27.The transaction is to acquire a real property or right-of-use asset from a related party: No
28.The price assessed in accordance with the Article 16 of the Regulations Governing the Acquisition and Disposal of
      Assets by Public Companies: Not applicable
29.Where the above assessed price is lower than the transaction price,the price assessed in accordance with the Article
      17 of the same regulations: Not applicable
30.Date on which material information regarding the same event has been previously released: 2025/02/27
31.Any other matters that need to be specified: In accordance with the limits to authority, the Contract Adjustment will be 
      conducted once the RFA is  approved by Chairman on November 25th, 2025.