SEC Form 6-K filed by Chunghwa Telecom Co. Ltd.

1934 Act Registration No. 1-31731

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 OF
THE SECURITIES EXCHANGE ACT OF 1934

Dated December 10, 2025

Chunghwa Telecom Co., Ltd.

(Translation of Registrant’s Name into English)

21-3 Xinyi Road Sec. 1,

Taipei, Taiwan, 100 R.O.C.

(Address of Principal Executive Office)

(Indicate by check mark whether the registrant files or will file annual reports under cover of form 20-F or Form 40-F.)

Form 20-F ☒ Form 40-F ☐

(Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.)

Yes ☐ No ☒

(If “Yes” is marked, indicated below the file number assigned to the registrant in connection with Rule 12g3-2(b): Not applicable)

EXHIBIT INDEX

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant Chunghwa Telecom Co., Ltd. has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

EXHIBIT 99.1

Chunghwa Telecom announced its operating results for November 2025

Date of events: 2025/12/10

Chunghwa Telecom announced its unaudited operating results on a consolidated basis for November 2025:

The Company's revenue for November 2025 was approximately NT$21.45 billion, income from operation was approximately NT$3.79 billion, net income attributable to stockholders of the parent was approximately NT$3.46 billion, EBITDA was approximately NT$7.18 billion and earnings per share was NT$0.44.

The Company's revenue for the eleven months ended November 30, 2025 was approximately NT$212.85 billion, income from operation was approximately NT$45.12 billion, net income attributable to stockholders of the parent was approximately NT$36.02 billion, EBITDA was approximately NT$81.91 billion and earnings per share was NT$4.64.

EXHIBIT 99.2

Chunghwa Telecom

December 10, 2025

This is to report the changes or status of 1) Sales volume 2) Funds lent to other parties 3) Endorsements and guarantees 4) Financial derivative transactions for the period of November 2025

1) Sales volume (NT$ Thousand)

2) Funds lent to other parties (NT$ thousand)

3) Endorsements and guarantees (NT$ thousand)

4) Financial derivative transactions accumulated from January to the reporting month (NT$ thousand)

a-1 Non-trading purpose (that does not meet the criteria for hedge accounting)

a-2 Non-trading purpose (that meets the criteria for hedge accounting)

b Trading purpose: None