[Subject : To announce the differences between the third quarter of 2015 financial statements under Taiwan-IFRSs and IFRSs To which item it meets: Article 4.1.(47) Statement: 1. Date of occurrence of the event: 2015/11/11 2. Cause of occurrence: To announce the differences between the third quarter of 2015 financial statements under International Financial Reporting Standards as adopted by ROC (“Taiwan-IFRSs’)] [Chunghwa Telecom Co., Ltd. and Subsidiaries Consolidated Financial Statements for the Nine Months Ended September 30, 2015 and 2014 and Independent Auditors’ Review Report 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 September 30, 2015] [Chunghwa Telecom Co., Ltd. and Subsidiaries Consolidated Financial Statements for the Nine Months Ended September 30, 2015 and 2014 CHUNGHWA TELECOM CO., LTD. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (In Millions of New Taiwan Dollars) September 30, 2015 (Unaudited) December 31, 2014 (Audited) September 30, 2014 (Unaudited) Amount % Amount % Amount % ASSETS CURRENT ASSETS] [Chunghwa Telecom Co., Ltd. Bo Yung Chen Chief Financial Officer 2 Description 99.1 To announce the differences between the third quarter of 2015 financial statements under Taiwan-IFRSs and IFRSs 99.2 99.3 Consolidated Financial Statements for the Nine Months Ended Sep. 30, 2015 in accordance with International Financial Reporting Standards issued by the International Accounting Standards Board (“IFRSs”) 3 6-K 1]

[The Company to participate in investor conference held by CLSA Date of events: 2015/11/03 Contents: 1. Date of the investor conference: 2015/11/05~2015/11/06 2. Time of the investor conference: 9:00 a.m. 3. Location of the investor conference: Japan 4. Brief information disclosed in the investor conference: The conference will be held by CLSA 5. http://newmops.tse.com.tw/ The presentation of the investor conference] [The Board resolves to donate to the related parties Date of events: 2015/11/10 Contents: 1. Date of occurrence of the event: 2015/11/10 2. The reason for the donation: To promote philanthropy events 3. The total amount of the donation: Donating Chunghwa Telecom Foundation NT$48 million and the government agencies NT$14.50 million, totally NT$62.50 million. 4. Counterparty to the donation: Chunghwa] [Chunghwa Telecom announces its operating results for October 2015 Date of events: 2015/11/10 Contents: 1. Date of occurrence of the event: 2015/11/10 2. 3. Relationship to the Company (please enter ”head office” or ”subsidiaries”): head office 4. Reciprocal shareholding ratios: N.A. 5. Name of the reporting media: N.A. 6. Content of the report: N.A. 7. Cause of occurrence: Chunghwa Telecom’s] [Chunghwa Telecom November 10, 2015 This is to report the changes or status of 1) Sales volume 2) Funds lent to other parties 3) Endorsements and guarantees 4) Financial derivative transactions for the period of Oct 2015 1) Sales volume (NT$ Thousand) Period Items 2015 2014 Changes Oct Net sales 20,354,824 19,033,088 (+)1,321,736 (+)6.94%] [FORM 6-K November 10, 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 Announcement on 2015/11/03 : The Company to participate in investor conference held by CLSA 99.2 Announcement on 2015/11/10]

[Chunghwa Telecom Reports Un-audited Consolidated Operating Results for the Third Quarter of 2015 Net Income Attributable to Stockholders of the Parent and EPS Increased 21.3% YoY TAIPEI, Taiwan, R.O.C. October 29, 2015 - Chunghwa Telecom Co., Ltd. (TAIEX: 2412, NYSE: CHT) (“Chunghwa” or “the Company”) today reported its un-audited operating results for the third quarter of 2015. All figures were] [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 Third Quarter of 2015 6-K 1 d37971d6k.htm FORM 6-K]

[The procurement for 3G mobile system expansion in 2015 Date of events: 2015/09/11 Contents: 1. Name and nature of the subject matter (e.g.land located at Sublot XX, Lot XX, North District, Taichung City): procurement for 3G system expansion in 2015 2. Date of the occurrence of the event: 2015/09/11 3. Transaction volume (e.g.XX square meters, equivalent to XX p’ing), unit] [The procurement for 4G LTE Expansion in 2015 with accumulated amount exceeding NT$500 million Date of events: 2015/09/18 Contents: 1. Name and nature of the subject matter (e.g. land located at Sublot XX, Lot XX, North District, Taichung City): procurement of additional order for RAN,etc.for 4G LTE Expansion in 2015 2. Date of the occurrence of the event: 2014/09/19~2015/09/18 3.] [The amendment of Annual Report 2014 Date of events: 2015/09/23 Contents: 1. Date of occurrence of the event: 2015/09/23 2. 3. Relationship to the Company (please enter ”head office” or ”subsidiaries”): head office 4. Reciprocal shareholding ratios: N.A. 5. Name of the reporting media: N.A. 6. Content of the report: N.A. 7. Cause of occurrence: To amend the Annual Report] [Chunghwa Telecom holds investor conference for the third quarter of 2015 operation results Date of events: 2015/10/08 Contents: 1. Date of the investor conference: 2015/10/29 2. Time of the investor conference: 16:00 3. Location of the investor conference: Teleconference 4. Brief information disclosed in the investor conference: Please refer to http://www.cht.com.tw/chtir at 15:30 on October 29, 2015 Taipei time 5.] [Chunghwa Telecom announces its operating results for September 2015 Date of events: 2015/10/08 Contents: 1. Date of occurrence of the event: 2015/10/08 2. 3. Relationship to the Company (please enter ”head office” or ”subsidiaries”): head office 4. Reciprocal shareholding ratios: N.A. 5. Name of the reporting media: N.A. 6. Content of the report: N.A. 7. Cause of occurrence: Chunghwa Telecom’s] [Chunghwa Telecom October 8, 2015 This is to report the changes or status of 1) Sales volume 2) Funds lent to other parties 3) Endorsements and guarantees 4) Financial derivative transactions for the period of Sep 2015 1) Sales volume (NT$ Thousand) Period Items 2015 2014 Changes Sep Net sales 18,712,301 19,145,820 (-)433,519 (-)2.26%] [FORM 6-K October 8, 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 Announcement on 2015/09/11 : The procurement for 3G mobile system expansion in 2015 99.2 Announcement on 2015/09/18 :]

[The Board approved the appointment of two senior managers Date of events: 2015/08/11 Contents: 1. Date of occurrence of the event: 2015/08/11 2. 3. Relationship to the Company (please enter ”head office” or ”subsidiaries”): head office 4. Reciprocal shareholding ratios: N.A. 5. Name of the reporting media: N.A. 6. Content of the report: N.A. 7. Cause of occurrence: The 12th] [The Board resolves to change the head of R&D Date of events: 2015/08/11 Contents: 1. Type of personnel changed (please enter: spokesperson, acting spokesperson, important personnel (CEO, COO, CMO, CSO, etc.), financial officer, accounting officer, research and development officer, or internal audit officer): research and development officer 2. Date of occurrence of the change: 2015/08/11 3. Name, title, and resume] [The Board resolves to donate to the related party Date of events: 2015/08/11 Contents: 1. Date of occurrence of the event: 2015/08/11 2. The reason for the donation: The Company donates health measurement equipment for U-Life health stations to support the Taipei City Government in promoting public health self-management policy. 3. The total amount of the donation: NT$ 300,000 4.] [To announce the differences between the Q2 2015 financial statements under Taiwan-IFRSs and under IFRSs Date of events: 2015/08/12 Contents: 1. Date of occurrence of the event: 2015/08/12 2. Cause of occurrence: To announce the differences between the second quarter of 2015 financial statements under International Financial Reporting Standards as adopted by ROC (“Taiwan-IFRSs’) and under International Financial Reporting Standards] [The Company to participate in investor conference held by Nomura Date of events: 2015/08/17 Contents: 1. Date of the investor conference: 2015/08/26 2. Time of the investor conference: 9:00AM 3. Location of the investor conference: Taipei 4. Brief information disclosed in the investor conference: The conference will be held by Nomura 5. http://newmops.tse.com.tw/ The presentation of the investor conference release:] [The Company to participate in investor conference held by Sinopac Date of events: 2015/09/02 Contents: 1. Date of the investor conference: 2015/09/08 2. Time of the investor conference: 9:00 a.m. 3. Location of the investor conference: Kuala Lumpur 4. Brief information disclosed in the investor conference: The conference will be held by Sinopac 5. http://newmops.tse.com.tw/ The presentation of the investor] [The Company to participate in investor conference held by CLSA Date of events: 2015/09/07 Contents: 1. Date of the investor conference: 2015/09/17~2015/09/18 2. Time of the investor conference: 8:30 a.m. 3. Location of the investor conference: Hong Kong 4. Brief information disclosed in the investor conference: The conference will be held by CLSA 5. http://newmops.tse.com.tw/ The presentation of the investor] [Chunghwa Telecom announces its operating results for August 2015 Date of events: 2015/09/10 Contents: 1. Date of occurrence of the event: 2015/09/10 2. 3. Relationship to the Company (please enter ”head office” or ”subsidiaries”): head office 4. Reciprocal shareholding ratios: N.A. 5. Name of the reporting media: N.A. 6. Content of the report: N.A. 7. Cause of occurrence: Chunghwa Telecom’s] [Chunghwa Telecom September 10, 2015 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 Aug 2015 1) Sales volume (NT$ Thousand) Period Items 2015 2014 Changes Aug Net sales 18,808,323 18,563,811 (+)244,512 (+)1.32%] [FORM 6-K September 11, 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 Announcement on 2015/08/11 : The Board approved the appointment of two senior managers 99.2 Announcement on 2015/08/11 :]