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 April 17, 2024 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 ...