[Subject: To announce the differences between the first quarter of 2015 financial statements under Taiwan-IFRSs and IFRSs To which item it meets: Article 2 paragraph 47 Statement: 1. Date of occurrence of the event: 2015/05/12 2. Cause of occurrence: To announce the differences between for the first quarter of 2015 financial statements under International Financial Reporting Standards as adopted by] [Chunghwa Telecom Co., Ltd. and Subsidiaries Consolidated Financial Statements for the Three Months Ended March 31, 2015 and 2014 and Independent Auditors’ Review Report 1 INDEPENDENT AUDITORS’ REVIEW REPORT The Board of Directors and Stockholders Chunghwa Telecom Co., Ltd. We have reviewed the accompanying consolidated balance sheets of Chunghwa Telecom Co., Ltd. and subsidiaries (“the Company”) as of March 31,] [Chunghwa Telecom Co., Ltd. and Subsidiaries Consolidated Financial Statements for the Three Months Ended March 31, 2015 and 2014 -1- CHUNGHWA TELECOM CO., LTD. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (In Millions of New Taiwan Dollars) March 31, 2015 December 31, 2014 March 31, 2014 Amount % Amount % Amount % ASSETS] [Chunghwa Telecom Co., Ltd. Bo Yung Chen Chief Financial Officer 2 Description 99.1 To announce the differences between the first quarter of 2015 financial statements under Taiwan-IFRSs and IFRSs 99.2]

[Chunghwa Telecom Reports Un-audited Consolidated Operating Results TAIPEI, Taiwan, R.O.C. April 30, 2015 — Chunghwa Telecom Co., Ltd. (TAIEX: 2412, NYSE: CHT) (“Chunghwa” or “the Company”) today reported its un-audited operating results for the first quarter of 2015. All figures were prepared in accordance with Taiwan-International Financial Reporting Standards (“Taiwan-IFRSs”) on a consolidated basis. (Comparisons throughout the press release, unless] [FORM 6-K May 4, 2015 Chunghwa Telecom Co., Ltd. ——————————————————————————————————— Room 110, Finance Department of Headquarters, 21-3 Hsinyi Road, Sec. 1, Taipei, Taiwan ——————————————————————————————————— x x n/a Chunghwa Telecom Co., Ltd. Bo Yung Chen Bo Yung Chen Chief Financial Officer Description 99.1 Press Release to Report Un-audited Consolidated Operating Results for the First Quarter of 2015 6-K 1 htm_9439.htm LIVE]

[Subject: To announce the differences between the year of 2014 financial statements under Taiwan-IFRSs and IFRSs To which item it meets: Article 2 paragraph 47 Statement: 1. Date of occurrence of the event: 2015/4/28 2. Reasons of occurrence of the event: To announce the differences between the year of 2014 financial statements under International Financial Reporting Standards as adopted by] [FORM 6-K April 28, 2015 Chunghwa Telecom Co., Ltd. ——————————————————————————————————— Room 110, Finance Department of Headquarters, 21-3 Hsinyi Road, Sec. 1, Taipei, Taiwan ——————————————————————————————————— x x n/a Chunghwa Telecom Co., Ltd. Bo Yung Chen Bo Yung Chen Chief Financial Officer Description 99.1 To announce the differences between the year of 2014 financial statements under Taiwan-IFRSs and IFRSs 6-K 1 htm_9418.htm]