Shareholder Services

1.Date of occurrence of the event:2026/02/26
2.For the company for whom the endorsements/guarantees were made, please specify name of endorsed/guaranteed
   company, its relationship with the Company providing endorsements/guarantees, the ceiling on the endorsements/
   guarantees (thousand NTD), the original amount of endorsements/guarantees (thousand NTD), the amount of the
   current additional endorsements/guarantees (thousand NTD), the amount of endorsements/guarantees as of the date
   of occurrence (thousand NTD), the actual loaned amount of the company for whom endorsements/guarantees were
   made (thousand NTD), and the reason for the current additional endorsements/guarantees:
  (1)The company name：Tung Ho Steel Vietnam Corp.,Ltd.
  (2)It's relationship with the Company:Our subsidiary of 100% direct investment.
  (3)The ceiling on the endorsements/guarantees(thousand NTD): NT$16,376,437
  (4)The original amount of endorsements/guarantees(thousand NTD): NT$7,898,970
  (5)The amount of the current additional endorsements/guarantees (thousand NTD):NT$2,706,420
  (6)The amount of endorsements/guarantees as of the date of occurrence of the event(thousand NTD):NT$10,605,390
  (7)The actual loaned amount of the company who was made the endorsements /guarantees(thousand NTD):NT$1,122,126
  (8)The reason for the current additional endorsements/guarantees: The bank loan contracts of Tung Ho Steel Vietnam Corp.,Ltd.
       need to be renewed, and these cases were approved by our board of directors. Due to adopting the earlier time to make the
       announcement,therefore,the time of endorsements/guarantees were overlapped and reached the standard of the
       announcement.
3.For collaterals provided by the company for whom the endorsements/guarantees were made, the content and the value
  (thousand NTD): None.
4.For the latest financial statements of the company for whom the endorsements/guarantees were made, the Capital
   (thousand NTD) and Cumulative gains/losses (thousand NTD):
  (1)Capital(thousand NTD):NT$6,333,408
  (2)Cumulative gains/losses(thousand NTD):-NT$3,688,728
5.For termination of endorsement/guarantee obligations, the condition and the date:
  (1)Condition:When Tung Ho Steel Vietnam Corp.,Ltd. cancels the loan's facility with the bank, we can cancel it's responsibility
      of the guarantee.
  (2)Date:When Tung Ho Steel Vietnam Corp.,Ltd. cancels the loan's facility with the bank.
6.The total amount of the ceiling on endorsements/guarantees (thousand NTD): NT$16,376,437
7.The total amount of endorsements/guarantees as of the date of occurrence (thousand NTD):NT$11,987,710
8.The amount of endorsements/guarantees as a percentage of the public company’s net worth on the latest financial report
   as of the date of occurrence:36.60%
9.The aggregate amount of equity method investments, endorsements/guarantees, and monetary loans extended to others as
   a percentage of the public company’s net worth on the latest financial statements:47.52%
10.Any other matters that need to be specified: The exchange rate of USD was 31.47 from the end of January 2026. The exchange
     rate of VND was 0.001198 from the end of January 2026.

1.Date of the board of directors resolution :2026/02/26
2.Year or quarter which dividends belong to:Year 2025
3.Period which dividends belong to:2025/01/01~2025/12/31
4.Appropriations of earnings in cash dividends to shareholders (NT$ per share):NT$4.3
5.Cash distributed from legal reserve and capital surplus to shareholders (NT$ per share):Nil
6.Total amount of cash distributed to shareholders (NT$):NT$3,139,919,417
7.Appropriations of earnings in stock dividends to shareholders (NT$ per share):Nil
8.Stock distributed from legal reserve and capital surplus to shareholders (NT$ per share):Nil
9.Total amount of stock distributed to shareholders (shares):Nil
10.Any other matters that need to be specified: The share distribution is tentatively setted at NT$ 4.3 per share, which is
     based on the allocation of shares of 730,213,818. If other reasons which will affect the number of outstanding shares,
     shareholders' dividends per share will be changed accordingly,and the Chairman shall be authorized to make adjustments.
11.Par value of common stock:NT$10

1.Type of personnel changed (please enter: spokesperson, acting spokesperson, important personnel (CEO, COO, CMO,
   CSO, etc.) ,financial officer, accounting officer, corporate governance officer, chief information security officer, research
   and development officer, chief internal auditor, or designated and non-designated representatives): chief internal auditor.
2.Date of occurrence of the change:2026/02/26
3.Name, title, and resume of the previous position holder:CHEN,YI-RU/ Deputy Manager of the Internal Audit Department
4.Name, title, and resume of the new position holder:CHEN,GUAN-WEN/ Deputy Manager of the Internal Audit Department
5.Type of the change (please enter: ”resignation”, ”position adjustment”, ”retirement”, ”death”,”new replacement”
   or ”dismissal”):position adjustment.
6.Reason for the change:position adjustment.
7.Effective date:2026/03/01 8.Any other matters that need to be specified:None.

1.Date of submission to the board of directors or approval by the board of directors:2026/02/26
2.Date of approval by the audit committee:2026/02/26
3.Start and end dates of financial reports or annual self-assessed financial information of the reporting period
   (XXXX/XX/XX~XXXX/XX/XX): 2025/01/01~2025/12/31
4.Operating revenue accumulated from 1/1 to end of the period (thousand NTD):57,855,435
5.Gross profit (loss) from operations accumulated from 1/1 to end of the period (thousand NTD):8,576,988
6.Net operating income (loss) accumulated from 1/1 to end of the period (thousand NTD):5,846,938
7.Profit (loss) before tax accumulated from 1/1 to end of the period (thousand NTD):5,917,433
8.Profit (loss) accumulated from 1/1 to end of the period (thousand NTD):4,757,984
9.Profit (loss) during the period attributable to owners of parent accumulated from 1/1 to end of the period
   (thousand NTD):4,720,934
10.Basic earnings (loss) per share accumulated from 1/1 to end of the period (NTD):6.47
11.Total assets end of the period (thousand NTD):51,997,209
12.Total liabilities end of the period (thousand NTD):17,534,863
13.Equity attributable to owners of parent end of the period (thousand NTD):34,345,972
14.Any other matters that need to be specified:None.

1.Date of occurrence of the event:2026/02/26
2.Reason for the donation:Approval of the budget for 2026 activities and administrative expenses.
3.Total amount of the donation:NTD 5 million, 60 tons of steel.
4.Counterparty to the donation:Tung Ho Steel Foundation.
5.Relationship with the Company:The foundation is contributed by our company.
6.Name and resume of independent director(s) that expressed an objection or qualified opinion:None.
7.Objection or qualified opinion by the aforementioned independent director(s):None.
8.Any other matters that need to be specified:None.

1.Date of the resolution by the board of directors or shareholders meeting or decision by the Company:2026/02/26
2.Type of ex-rights or ex-dividend (please enter: “Ex-rights”, ”Ex-dividend”, or ”Ex-rights and dividend”):Ex-dividend
3.Type and monetary amount of common stock dividend distribution:
  (1)Type:Cash dividends.
  (2)Monetary amount of dividend distribution:NT$3,139,919,417,and pay NT$4.3 per share.
4.Ex-rights (ex-dividend) trading date:2026/03/20
5.Last date before book closure:2026/03/23
6.Book closure starting date:2026/03/24
7.Book closure ending date:2026/03/28
8.Ex-rights (ex-dividend) record date:2026/03/28
9.Deadline for applying the conversion of the bond:None.
10.The closure period for the conversion of the bond will start from the date:None.
11.The closure period for the conversion of the bond will end on the date:None.
12.Payment date of common stock cash dividend distribution:2026/04/24
13.Any other matters that need to be specified: If thereafter, there are other reasons that affect the number of shares
    outstanding, and the interest rate of the allotted shares by shareholders changes as a result, the chairman of the
    board shall be authorized to adjust it.

1.Date of the board of directors resolution:2026/02/25
2.Type and monetary amount of dividend distribution: Appropriations of earnings in cash dividends to shareholders.
   Total amount of cash distributed to shareholders:NT$1,547,328,953.
3.Any other matters that need to be specified:None.

1.Date of the board of directors' resolution:2026/02/25
2.Shareholders meeting date:2026/04/13
3.Shareholders meeting location: 9F.,No.9,Sec.1,Chang'an E.Rd.,Zhongshan Dist.,Taipei City,Taiwan.
   (Conference room of Tung Kang Steel Structure Corp.)
4.Cause for convening the meeting (1)Reported matters:
   (1)Report on 2025 business report.
   (2)Report on auditing 2025 financial statements by Supervisors.
   (3)Report on 2025 remuneration of distribution for employees and directors.
5.Cause for convening the meeting (2)Acknowledged matters:
   (1)Acknowledgement of the 2025 Business Report and Financial Statements.
   (2)Acknowledgement of the 2025 Profit Distribution Proposal.
6.Cause for convening the meeting (3)Matters for Discussion:None.
7.Cause for convening the meeting (4)Election matters: Re-election of directors and supervisors of the company.
8.Cause for convening the meeting (5)Other Proposals: Discussion to approve the lifting of noncompetition restrictionsfor
  Corporate Director and Legal Representative.
9.Cause for convening the meeting (6)Extemporary Motions:None.
10.Book closure starting date:2026/03/15
11.Book closure ending date:2026/04/13
12.Any other matters that need to be specified: In accordance with Article 172-1 of the Company Law, it is proposed that
    from 2026/02/27 to 2026/03/09 before 9:00 a.m., The company's Finance and Accounting Department will accept
    proposal by paper from shareholders holding more than 1% of the shares. (Postal address: 6F.,No.9,Sec.1,Chang'an
    E.Rd., Zhongshan Dist.,Taipei City,Taiwan.)

1.Date of a notice of the board of directors meeting is issued:2026/02/13
2.Expected date of the board of directors meeting is convened:2026/02/26
3.Expected year and quarter of the financial reports or the annual self-assessed financial information
   submitted to the board of directors or approved by the board of directors: Consolidated financial
   report for 2025 fourth quarter.
4.Any other matters that need to be specified:None.

1.Date of occurrence of the event:2026/01/23
2.Date of the original announcement and reporting:2024/10/21
3.Summary of the content originally announced and reported:
  1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City):
    (1).Partial factories and land of Tung Ho Steel Enterprise Corporation.
    (2).No. 540, Sec. 2, Jieshou Rd., Bade Dist., Taoyuan City 334029, Taiwan (R.O.C.)
  2.Transaction unit amount (e.g.XX square meters, equivalent to XX ping),unit price, and total transaction price:
    (1).Transaction unit amount: Lease of factory and land area totaling 2,500 ping.
    (2).Unit price:
      (a)Lease of factory and land from January 1, 2025, to December 31, 2027, with a monthly rent of NT$1,050,000 (including tax).
      (b)Lease of factory and land from January 1, 2028, to December 31, 2030, with a monthly rent of NT$1,102,500 (including tax).
      (c)Lease of factory and land from January 1, 2031, to December 31, 2034, with a monthly rent of NT$1,157,625 (including tax). 
  3.Total transaction amount: Right-of-use asset amount:NT$106,730,945.
  4.Lease Term: January 1, 2025 to December 31, 2034.
4.Reason for change and its main content:
  1.In response to Tung Kang Engineering & Construction Corp business expansion and operational space requirements,
     the Company plans to adjust the original scope of the lease. The leased area is planned to be expanded in three phases,
     and the actual leased area for each phase shall be subject to on-site measurement results.
  2.Summary of changes resulting from the contract amendment：
     Before Amendment： The leased factory buildings and land area totaled 2,500 ping.
     After Amendment： The leased factory buildings and land area shall be expanded in three phases:
      (1)Phase I: Area A, approximately 2,500 ping.
      (2)Phase II: Area B, approximately 500 ping. (The implementation is expected to commence on July 1, 2026.)
      (3)Phase III: Area C, approximately 1,947 ping.(The implementation is expected to commence on January 1, 2028.)
  3.Total transaction amount: Right-of-use asset amount:NT$182,952,166.
5.Effect on the Company's finance and business after the change:None.
6.Any other matters that need to be specified:
  1.This amendment involves a modification to the terms of the originally executed lease agreement. The implementation
     thereof shall be adjusted in a timely manner based on the actual operational needs of both parties and the relevant
     conditions.
   2.This amendment was approved by the Audit Committee on January 6, 2026, and subsequently approved by the Board of
      Directors on January 23, 2026. The subsidiary, Tung Kang Engineering & Construction Corp., Ltd., will submit the matter to
      its Board of Directors for ratification at its meeting scheduled to be held on February 24, 2026, after which the amended
      lease agreement will be executed.

1.Date of the board of directors' resolution：2026/01/23
2.Shareholders meeting date：2026/05/22
3.Shareholders meeting location：Miao-Li Factory of Tung Ho Steel Enterprise Corporation, No.22, Pingding, Erhu Village,
   ShiHwu Township, Miaoli County 36842, Taiwan.
4.Shareholders' meeting will be held by means of (physical shareholders' meeting/ hybrid shareholders' meeting /
   virtual-only shareholders' meeting)：physical shareholders' meeting
5.Cause for convening the meeting (1)：Report item(s)
  (1)：Report on 2025 business report.
  (2)：Report on auditing 2025 financial statements by Audit Committees.
  (3)：Report on 2025 earnings is cash dividends distribution.
  (4)：Report on 2025 remuneration of distribution for employees and directors.
  (5)：Report on 2025 payment of remuneration of directors.
  (6)：Report on the communication condition between Audit Committees and the director of internal audit.
6.Cause for convening the meeting (2)：Ratification Item(s)
  (1)：Acknowledgement of the 2025 Business Report and Financial Statements.
  (2)：Acknowledgement of the 2025 Profit Distribution Proposal.
7.Cause for convening the meeting (3)：Discussion Item(s)
  (1)：Discussion of amendments to the "Articles of Incorporation".
8.Cause for convening the meeting (4)：Election Item
  (1)：To elect directors (including independent directors).
9.Cause for convening the meeting (5)：Other Proposal(s)
  (1)：Discussion of the proposal of release the prohibition on the new directors and their representatives of the board
          from participation in competitive business.
10.Extemporary Motions：
11.Book closure starting date：2026/03/24
12.Book closure ending date：2026/05/22
13.Any other matters that need to be specified：