Announcements

1.Date of occurrence of the change:2025/03/18 2.Name of legal person:Bank of Taiwan 3.Name of the previous position holder:Deng-Ran Wu(Dismissed on March 14,2025) 4.Resume of the previous position holder:Chief Secretary of the Board of Directors' Office & Director of the Human Resources Department, Bank of Taiwan 5.Name of the new position holder:Mei-Ling Liang 6.Resume of the new position holder:EVP & GM, Department of General Affairs, Bank of Taiwan 7.Reason for the change:Assignment 8.Original term (from __________ to __________):2024/06/21 to 2027/06/20 9.Effective date of the new appointment:2025/03/19 10.Any other matters that need to be specified:In accordance with the official letter(March 17,2025 Reg.11400011121)issued by Bank of Taiwan.

1.Name and nature of the underlying assets (if preferred shares, the terms and conditions of issuance shall also be indicated, e.g., dividend yield, etc.):Common Stock of Taipei Financial Center Corporation 2.Date of occurrence of the event:2025/03/14 3.Amount, unit price, and total monetary amount of the transaction: 32,340,000 shares; NTD 38.7 per share; NTD 1,251,558,000 4.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): Itochu Taiwan Investment Corporation; It is not a related party. 5.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:NA 6.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:NA 7.Matters related to the current disposal of creditors' rights (including types of collaterals of the disposed creditor’s rights; if creditor's rights over a related party, announcement shall be made of the name of the related party and the book amount of the creditor's rights, currently being disposed of, over such related party):NA 8.Profit or loss from the disposal (not applicable in cases of acquisition of securities) (those with deferral should provide a table explaining recognition):NA 9.Terms of delivery or payment (including payment period and monetary amount), restrictive covenants in the contract, and other important terms and conditions: All terms and conditions are based on the agreements. 10.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)Follow the authorization procedure of TBB. (2)Based on the equity value analysis report and CPAs opinions. (3)Board meeting. 11.Net worth per share of the Company's underlying securities acquired or disposed of: NTD 13.13 12.Cumulative no.of shares held (including the current transaction), their monetary amount, shareholding percentage, and status of any restriction of rights (e.g., pledges), as of the present moment: 44,100,000 shares; NTD 1,579,662,000; 3.00%; None 13.Current ratio of securities investment (including the current trade, as listed in article 3 of Regulations Governing the Acquisition and Disposal of Assets by Public Companies) to the total assets and equity attributable to owners of the parent as shown in the most recent financial statement and working capital as shown in the most recent financial statement as of the present: 11.19%; 202.02%; NA 14.Broker and broker's fee:NA 15.Concrete purpose or use of the acquisition or disposal: Long-term investment 16.Any dissenting opinions of directors to the present transaction:None 17.Whether the counterparty of the current transaction is a related party:No 18.Date of the board of directors resolution:NA 19.Date of ratification by supervisors or approval by the Audit Committee:NA 20.Whether the CPA issued an unreasonable opinion regarding the current transaction:No 21.Name of the CPA firm:WeTec International CPAs 22.Name of the CPA:Lai, Ming-Yang 23.Practice certificate number of the CPA:Taipei City CPA Certificate No. 2123 24.Whether the transaction involved in change of business model:No 25.Details on change of business model:NA 26.Details on transactions with the counterparty for the past year and the expected coming year:NA 27.Source of funds:NA 28.Any other matters that need to be specified: The transaction will be only effective subject to the approvals of the competent authority and the counterparty's Board of Directors.

1.Date of occurrence of the change:2025/03/13 2.Name of legal person:Bank of Taiwan 3.Name of the previous position holder:Deng-Ran Wu 4.Resume of the previous position holder:Chief Secretary of the Board of Directors' Office & Director of the Human Resources Department, Bank of Taiwan 5.Name of the new position holder:N/A 6.Resume of the new position holder:N/A 7.Reason for the change:Dismissal 8.Original term (from __________ to __________):2024/06/21 to 2027/06/20 9.Effective date of the new appointment:N/A 10.Any other matters that need to be specified:In accordance with the official letter(March 13,2025 Reg.11400010631)issued by Bank of Taiwan.The letter stated that he will be dismissed from his post effective March 14, 2025.

1.Date of the board of directors' resolution:2025/03/12 2.Shareholders meeting date:2025/06/20 3.Shareholders meeting location:17F,No.30,Ta Cheng St,Taipei,Taiwan R.O.C. 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)Reported matters: (A)2024 Business Report. (B)2024 Statement and Records of Account examined by the Audit Committee. (C)2024 Amounts and Payment of Employees' Compensation and Directors' Compensation. 6.Cause for convening the meeting (2)Acknowledged matters: (A)2024 Business Report and Financial Statements. (B)2024 Earnings Distribution. 7.Cause for convening the meeting (3)Matters for Discussion: (A)Proposal for the issuance of new shares for stock dividends. (B)Amendment of ”The Articles of Incorporation”. (C)Proposal of Release the Prohibition on Directors from Participation in Competitive Business. 8.Cause for convening the meeting (4)Election matters:None. 9.Cause for convening the meeting (5)Other Proposals:None. 10.Cause for convening the meeting (6)Extemporary Motions:None. 11.Book closure starting date:2025/04/22 12.Book closure ending date:2025/06/20 13.Any other matters that need to be specified: (1)The earning distribution for 2024 will be announced 40 days prior to the shareholders' meeting after the resolution of the Board of Directors. (2)A person or a group of related persons who singly, jointly or collectively holds more than 5% of total voting shares of Taiwan Business Bank(TBB) shall file to the Financial Supervisory Commission (FSC) for a record within 10 days after the date of acquisition; Subsequently, the same filing proceedings are also required for every accumulated increase or decrease of holding by more than 1%; those who intend to hold singly,jointly or collectively more than 10%, 25% or 50% of total voting shares of TBB, are required to file for approval from the FSC prior to theholding. (Please refer to Articles 25 and 25-1 of the Banking Act fordetails.) (3)The shareholder could choose to log in TDCC website to vote, The period from 2025/05/21 to 2025/06/17.(website:https://www.stockvote.com.tw) (4)According to article 172-1 of Company Law,if any shareholder holding 1% or more of the total number of outstanding shares would like to propose in this general shareholders' meeting,TBB will receive such proposed proposition from 2025/04/11 to 2025/04/21(until 17:00). The address of proposition receiving office: 7F, No.30, Ta Cheng St, Taipei, Taiwan(Secretarial Dept, Taiwan Business Bank Co.,Ltd.)

1.Date of occurrence of the event:2025/03/07 2.Company name:Taiwan Business Bank,Ltd. 3.Relationship to the Company (please enter ”head office” or ”subsidiaries”):Head office 4.Reciprocal shareholding ratios:Na 5.Cause of occurrence:As Subject 6.Countermeasures:Na 7.Any other matters that need to be specified (the information disclosure also meets the requirements of Article 7, subparagraph 9 of the Securities and Exchange Act Enforcement Rules, which brings forth a significant impact on shareholders rights or the price of the securities on public companies.): In February,2025, the Bank reported the consolidated income before tax was NT $1,143 million, the consolidated income after tax was NT $838 million. The accumulated consolidated income before tax was NT $2,679 million, the accumulated consolidated income after tax was NT $2,037 million, the accumulated consolidated EPS before tax was NT$0.29, the accumulated consolidated EPS after tax was NT$0.22, consolidated book value per share was NT$14.67. Above figures are not audited or reviewed by CPA.

1.Date of the board of directors resolution or date of occurrence of the change:2025/02/24 2.Position (Please enter chairperson or president/general manager):Chairperson 3.Name of the previous position holder:Pei-Jean Liu (Dismissed on February 22,2025) 4.Resume of the previous position holder:Chairperson,Taiwan Business Bank,Ltd. 5.Name of the new position holder:Kuo-Chung Lee 6.Resume of the new position holder:Managing Director & President, Taiwan Business Bank, Ltd. 7.Circumstances of change (Please enter ”resignation”, ”dismissal”, ”term expired” , ”job relocation”, ”severance”, ”retirement”, ”death” or ”new appointment”):dismissal 8.Reason for the change:Election of Acting chairperson 9.Effective date of the new appointment:2025/02/24 10.Any other matters that need to be specified (the information disclosure also meets the requirements of Article 7, subparagraph 6 of the Securities and Exchange Act Enforcement Rules, which brings forth a significant impact on shareholders rights or the price of the securities on public companies.): Kuo-Chung Lee was elected as the Acting Chairperson at the 2nd Interim Executive Meeting of the 17th Board of Directors on February 24, 2025.

1.Date of occurrence of the change:2025/02/21 2.Name of legal person:Ministry of Finance 3.Name of the previous position holder:Pei-Jean Liu 4.Resume of the previous position holder:Chairman,Taiwan Business Bank,Ltd. 5.Name of the new position holder:N/A 6.Resume of the new position holder:N/A 7.Reason for the change: Dismissal by the Ministry of Finance 8.Original term (from __________ to __________):2024/06/21 to 2027/06/20 9.Effective date of the new appointment:N/A 10.Any other matters that need to be specified:The Ministry of Finance issued a letter No. 11403624660 on February 21,2025, indicating that she will be dismissed from her position effective February 22,2025.

1.Date of submission to the board of directors or approval by the board of directors:2025/02/21 2.Date of approval by the audit committee:2025/02/20 3.Start and end dates of financial reports or annual self-assessed financial of the reporting period (XXXX/XX/XX~XXXX/XX/XX):2024/01/01~2024/12/31 4.Net interest revenue (expense) accumulated from 1/1 to end of the period (thousand NTD):19,115,770 5.Net revenue accumulated from 1/1 to end of the period (thousand NTD): 34,114,587 6.Profit (loss) before tax accumulated from 1/1 to end of the period (thousand NTD):14,062,664 7.Profit (loss) accumulated from 1/1 to end of the period (thousand NTD):11,236,701 8.Profit (loss) during the period attributable to owners of parent accumulated from 1/1 to end of the period (thousand NTD):11,236,701 9.Basic earnings (loss) per share accumulated from 1/1 to end of the period (NTD):1.23 10.Total assets end of the reporting period (thousand NTD):2,374,756,050 11.Total liabilities end of the reporting period (thousand NTD):2,243,322,268 12.Equity attributable to owners of parent end of the reporting period (thousand NTD):131,433,782 13.Any other matters that need to be specified:Na

1.Date of institutional investor conference:2025/03/19 2.Time of institutional investor conference:14:00 3.Location of institutional investor conference:Webcast 4.Outline of institutional investor conference:Disclosure of Taiwan Business Bank's performance in 2024Q4, the conference will be conducted in Mandarin. 5.Any other matters that need to be specified:None.

1.Date of occurrence of the event：2025/02/12 2.The subject of the incident：Listed companies 3.Cause of occurrence (Explanation of the event)：The deficiencies related to the misappropriation of funds by the former employees of the Bank’s World Trade Center Branch and Xi Zhi Branch were found to have violated the regulations of Article 45-1, Paragraph 1 of the Banking Act, and the Bank was fined NT$2 million according to Article 129, Paragraph 7 of the same Act. 4.Handling procedure：The matter was handled according to relevant regulations of the competent authority. 5.Status of the injunction by the respective competent authority：The Bank was fined NT$2 million. 6.Whether being fined or penalized：Yes 7.Administrative fines(amount)：NTD 2,000,000 元 8.Anticipated possible loss or impact：NT$2 million 9.Amount of insurance claims that might be obtained(amount)：Not available 10.Improvement status and future countermeasures：The Bank has improved relevant control mechanisms and strengthened management regulations. 11.Whether material information regarding the same event has been previously released：None 12.Any other matters that need to be specified：None

1.Date of a notice of the board of directors meeting is issued:2025/02/10 2.Expected date of the board of directors meeting is convened:2025/02/21 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:2024 Annual Financial Report 4.Any other matters that need to be specified:None

1.Date of occurrence of the event:2025/02/08 2.Cause of occurrence:The company were investigated by the Prosecutors office on 2025/02/08. 3.Countermeasures:Comply with the requirements of the Prosecutors office. 4.Effect on the Company's finances and business:No material effect. 5.Any other matters that need to be specified:None.

1.Date of occurrence of the event:2025/02/08 2.Company name:Taiwan Business Bank,Ltd. 3.Relationship to the Company (please enter ”head office” or ”subsidiaries”):Head office 4.Reciprocal shareholding ratios:Na 5.Cause of occurrence:As Subject 6.Countermeasures:Na 7.Any other matters that need to be specified (the information disclosure also meets the requirements of Article 7, subparagraph 9 of the Securities and Exchange Act Enforcement Rules, which brings forth a significant impact on shareholders rights or the price of the securities on public companies.): In January,2025, the Bank reported the consolidated income before tax was NT $1,537 million, the consolidated income after tax was NT $1,199 million. The accumulated consolidated income before tax was NT $1,537 million, the accumulated consolidated income after tax was NT $1,199 million, the accumulated consolidated EPS before tax was NT$0.17, the accumulated consolidated EPS after tax was NT$0.13, consolidated book value per share was NT$14.49. Above figures are not audited or reviewed by CPA.

1.Date of occurrence of the event:2025/01/08 2.Company name:Taiwan Business Bank,Ltd. 3.Relationship to the Company (please enter ”head office” or ”subsidiaries”):Head office 4.Reciprocal shareholding ratios:Na 5.Cause of occurrence:As Subject 6.Countermeasures:Na 7.Any other matters that need to be specified (the information disclosure also meets the requirements of Article 7, subparagraph 9 of the Securities and Exchange Act Enforcement Rules, which brings forth a significant impact on shareholders rights or the price of the securities on public companies.): In December,2024, the Bank reported the consolidated income before tax was NT $826 million, the consolidated income after tax was NT $673 million. The accumulated consolidated income before tax was NT $14,057 million, the accumulated consolidated income after tax was NT $11,231 million, the accumulated consolidated EPS before tax was NT$1.53, the accumulated consolidated EPS after tax was NT$1.23, consolidated book value per share was NT$14.36. Above figures are not audited or reviewed by CPA.