Chunghwa Telecom Announces Acquisition of Office Usage Rights in Nangang District, Taipei City

1. Name and nature of the subject property (e.g., land located at Section XX, Subsection XX, North District, Taichung City): Office space on the southern half of the 11th floor, No. 1, Section 2, Nangang Road, Nangang District, Taipei City

2. Date of occurrence: July 31, 2026 ~ July 31, 2026

3. Board approval date: July 31, 2026

4. Other approval dates: Not applicable

5. Quantity of units (e.g., XX square meters, converted to XX ping), unit price, and total transaction amount: Quantity: 264.27 ping Unit price: NT$2,324 to NT$2,465 per ping per month (inclusive of tax) Total monthly rent: NT$614,100 to NT$651,400 (inclusive of tax) Total contract value: NT$35,892,900 (inclusive of tax) Right-of-use asset value: NT$32,261,045

6. Counterparty and its relationship with the company (if the counterparty is an individual and not a related party, name disclosure may be omitted): Counterparty: Chunghwa Telecom Co., Ltd. Relationship with the company: Parent company

7. If the counterparty is a related party, state the reason for selecting them, previous owner, relationship between previous owner and the company/counterparty, transfer date, and amount: Reason for selecting related party: Location meets the company's business planning and needs Previous owner: Not applicable Relationship: Not applicable Transfer date and amount: Not applicable

8. If the asset's owner was a related party of the company within the past five years, disclose acquisition/disposal date, price, and relationship at the time: Previous owner: Not applicable Relationship: Not applicable Transfer date and amount: Not applicable

9. Expected gain (or loss) on disposal (not applicable for asset acquisition) (if deferred, provide recognition details): Not applicable

10. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important clauses: Payment terms: Monthly payment of NT$614,100 to NT$651,400 (inclusive of tax) Lease period: October 1, 2026 ~ September 30, 2031 Contractual restrictions and other important terms: Three-month rent-free period

11. Transaction decision method (e.g., bidding, comparison, negotiation), pricing reference basis, and decision-making unit: Decision method: Negotiation Pricing reference: Local rental market conditions Decision-making unit: Board of Directors

12. Name of professional appraisal firm or company and appraisal amount: Not applicable

13. Name of professional appraiser: Not applicable

14. Appraiser license number: Not applicable

15. Whether the appraisal report is for limited, specific, or special pricing: No or not applicable

16. Whether appraisal report has not yet been obtained: No or not applicable

17. Reason for not obtaining appraisal report: Not applicable

18. If there is a significant difference in appraisal results, explain the reason and include auditor's opinion: Not applicable

19. Name of accounting firm: Not applicable

20. Name of accountant: Not applicable

21. Accountant license number: Not applicable

22. Broker and brokerage fee: None

23. Specific purpose or use of the acquisition or disposal: To meet the needs of in-house product development and business expansion, and to recruit business teams, the company has leased office space in the Nangang and Neihu areas, where the biotechnology industry is thriving, to facilitate smooth business operations.

24. Opinions of directors who objected to the transaction: None

25. Whether this transaction is a related-party transaction: Yes

26. Date of supervisor approval or audit committee consent: July 31, 2026

27. Whether the transaction involves acquiring real estate or right-of-use assets from a related party: Yes

28. Valuation amount under Article 16 of the 'Regulations on the Acquisition or Disposal of Assets by Publicly Issued Companies': Not applicable

29. Valuation amount under Article 17 if the valuation under the previous item is lower than the transaction price: Not applicable

30. Previous date of major information disclosure on the same event: Not applicable

31. Other explanatory matters: Three-month rent-free period included; transaction amount is based on the signed contract amount.