[GPON System Equipment Expansion for 2012 (one batch) Date of events: 201 2 / 07 / 19 Contents: 1.Name and nature of the subject matter (e.g. land located at Sublot XX, Lot XX, North District, Taichung City):GPON System Equipment Expansion for 2012(one batch). 2.Date of the occurrence of the event:2012/07/19 3.Transaction volume (e.g. XX square meters, equivalent to XX p’ing),] [The amendment of Chinese Annual Report 2011 Date of events: 201 2 / 07 / 20 Contents: 1.Date of occurrence of the event:2012/07/20 Chunghwa Telecom Co., Ltd. 3.Relationship to the Company (please enter “head office” or “affiliate company”):head office 4.Reciprocal shareholding ratios: N/A 5.Cause of occurrence: To amend the Chinese Annual Report 2011 on page 50 and 268. 6.Countermeasures:To revise] [To announce the acquisition of Taiwan Semiconductor Manufacturing Co., Ltd. Corporate Bonds Date of events: 201 2 / 08 / 03 Contents: 1.Name and nature of the subject matter (if preferred shares, the terms and conditions of issuance shall also be indicated, e.g. dividend yield):Taiwan Semiconductor Manufacturing Co., Ltd. -Corporate Bonds (Code: B618AY, B618B0) 2.Date of occurrence of the event:2012/03/12~2012/08/03] [To announce the Company’s July 2012 revenues To announce the Company’s July 2012 revenues Date of events: 201 2 / 08 / 10 Contents: 1.Date of occurrence of the event:2012/08/10 Chunghwa Telecom Co., Ltd. 3.Relationship to the Company (please enter “head office” or “affiliate company”):Head office 4.Reciprocal shareholding ratios: N/A 5.Cause of occurrence: Chunghwa Telecom today announced a 3.4% year-over-year] [5 Chunghwa Telecom August 1 0 , 2012 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 Jul 201 2 1) Sales volume (NT$ Thousand) Period Items 201 2 201 1 Changes % Jul Invoice amount 16,165,186 17,005,585 (-)840,399] [8 /1 3 Chunghwa Telecom Co., Ltd.]

[Supplement announcement: the bid of procurement of Project B of NG SDH+OXC Network Equipment & Installation that the board approved on 2012/03/27 is awarded Date of events: 201 2 / 06 / 20 Contents: 1.Name and nature of the subject matter (e.g. land located at Sublot XX, Lot XX, North District, Taichung City):Project B of NG SDH+OXC Network Equipment and] [Major resolutions of 2012 Annual General Meeting Date of events: 201 2 / 06 / 22 Contents: 1.Date of the shareholders’ meeting:2012/06/22 2.Important resolutions: (1)Ratification of 2011 business report and financial statements (2)Ratification of 2011 earnings distribution; the cash dividend is NT$5.4608 per share (3)Approval of the amendment of the “Articles of Incorporation”. (4)Approval of the amendment of the “Regulations] [Chunghwa Telecom holds an investors conference in Hong Kong Date of events: 201 2 / 06 / 25 Contents: 1.Date of the investor conference:2012/07/03~2012/07/04 2.Time of the investor conference:2:00PM 3.Location of the investor conference: Hong Kong 4.Brief information disclosed in the investor conference: The conference arrangement will be helped by Daiwa-Cathay. 5.The presentation of the investor conference release: Please refer] [To announce the board approves the procurement of Project A of MSER Network Equipment and Installation Date of events: 201 2 / 06 / 26 Contents: 1.Name and nature of the subject matter (e.g. land located at Sublot XX, Lot XX, North District, Taichung City): Project A of MSER Network Equipment and Installation for 2012. 2.Date of the occurrence of] [To announce the record date for dividend distribution Date of events: 201 2 / 06 / 26 Contents: 1.Date of the resolution by the board of directors or shareholders’ meeting or decision by the Company:2012/06/26 2.Type of ex-rights or ex-dividend (please enter: “Ex-rights”, “Ex-dividend”, or “Ex-rights and dividend”):Ex-dividend 3.Type and monetary amount of dividend distribution: To be distributed with cash] [6 To announce a non-cash real estate impairment charge purs u ant to ROC SFAS No. 35. Date of events: 201 2 / 06 / 29 Contents: 1.Date of occurrence of the event:2012/06/29 Chunghwa Telecom Co., Ltd. 3.Relationship to the Company (please enter “head office” or “affiliate company”):Head office 4.Reciprocal shareholding ratios: N/A 5.Cause of occurrence: The Company recorded a] [7 Clarification of the media report on June 30 Date of events: 201 2 / 06 / 30 Contents: 1.Name of the reporting media: Commercial Times 2.Date of the report:2012/06/30 3.Content of the report: “Chunghwa Telecom emphasized that the impairment on real estate was within expectation but was still confident that the Company will meet its guidance for year 2012.”] [8 To announce the procurement of EPON expansion project Date of events: 201 2 / 07 / 04 Contents: 1.Name and nature of the subject matter (e.g. land located at Sublot XX, Lot XX, North District, Taichung City): EPON expansion project for 2012. 2.Date of the occurrence of the event:2011/07/05~2012/07/04 3.Transaction volume (e.g.XX square meters, equivalent to XX p’ing), unit] [9 New Appointment of Representative Juristic-Person Supervisor Date of events: 201 2 / 07 / 06 Contents: 1.Date of occurrence of the change:2012/07/06 2.Name of juristic-person director/ supervisor: National Development Fund, Executive Yuan 3.Name and resume of the replaced person: Shwu-Fen Chao; Councilor to the vice President; Master of Diplomacy, National Chengchi University. 4.Name and resume of the replacement: I-chuan] [10 To announce the Company’s June 2012 revenues Date of events: 201 2 / 07 / 10 Contents: 1.Date of occurrence of the event:2012/07/10 3.Relationship to the Company (please enter “head office” or “affiliate company”):Head office 4.Reciprocal shareholding ratios: N/A 5.Cause of occurrence: Chunghwa Telecom today announced a 4.1% year-over-year decrease in unaudited unconsolidated total revenue to NT$15.68 billion in] [11 Chunghwa Telecom July 1 0 , 2012 This is to report the changes or status of 1) Sales volume 2) Funds lent to other parties 3) Endorsements and guarantees 4) Financial derivative transactions for the period of Jun 201 2 1) Sales volume (NT$ Thousand) Period Items 201 2 201 1 Changes % Jun Invoice amount 1 5 ,] [7 /1 1 Chunghwa Telecom Co., Ltd.]

[99.1 Chunghwa Telecom Announces Non-Cash Real Estate Impairment Charge Taipei, Taiwan, R.O.C. June 29, 2012 - Chunghwa Telecom Co., Ltd. (TAIEX: 2412, NYSE: CHT) (“Chunghwa” or “the Company”) today announced that the Company recorded a non-cash real estate impairment charge associated with price variations in regional markets of approximately NT$1.26 billion, or 0.3% of the shareholder’s equity, for the quarter] [6 / 29 Chunghwa Telecom Co., Ltd.]

[To announce the Disposal of Templeton Global Bond Fund A (acc) Date of events: 2011/ 05 / 18 Contents: 1.Name and nature of the subject matter (if preferred shares, the terms and conditions of issuance shall also be indicated, e.g. dividend yield):Templeton Global Bond Fund A (acc) 2.Date of occurrence of the event:2012/05/18~2012/05/18 3.Volume, unit price, and total monetary amount] [Supplementary Announcement of the Disposal of Templeton Global Bond Fund A (acc) Date of events: 2011/ 05 / 18 Contents: 1.Name and nature of the subject matter (if preferred shares, the terms and conditions of issuance shall also be indicated, e.g. dividend yield):Templeton Global Bond Fund A (acc) 2.Date of occurrence of the event:2012/05/18~2012/05/18 3.Volume, unit price, and total monetary] [Chunghwa Telecom participates in an investors conference and holds a non-deal roadshow Date of events: 2011/ 05 / 22 Contents: 1.Date of the investor conference:2012/05/24~2012/05/25 2.Time of the investor conference:09:30AM 3.Location of the investor conference: Singapore 4.Brief information disclosed in the investor conference: The conference will be held by UBS. 5.The presentation of the investor conference release: Please refer to] [Supplement announcement: the awarded bid of procurement of Project A of NG SDH+OXC Network Equipment and Installation Date of events: 2011/ 05 / 22 Contents: 1.Name and nature of the subject matter (e.g. land located at Sublot XX, Lot XX, North District, Taichung City): Project A of NG SDH+OXC Network Equipment and Installation for 2012. 2.Date of the occurrence of] [Chunghwa Telecom participates in an investors conference Date of events: 201 2 / 05 / 28 Contents: 1.Date of the investor conference:2012/05/31 2.Time of the investor conference:10:00AM 3.Location of the investor conference: Seoul, Korea 4.Brief information disclosed in the investor conference: The conference will be held by BNP Paribas. 5.The presentation of the investor conference release: Please refer to http://newmops.tse.com.tw/.] [6 To announce the acquisition of China Development Financial Holding Corporate Bonds Date of events: 201 2 / 06 / 08 Contents: 1.Name and nature of the subject matter (if preferred shares, the terms and conditions of issuance shall also be indicated, e.g. dividend yield):China Development Financial Holding Corp.-Corporate Bonds (Code: B95544) 2.Date of occurrence of the event:2011/09/16~2012/06/08 3.Volume, unit] [7 Explanation of the report that CHT and R&H plan to set up a joint venture to provide cloud services Date of events: 201 2 / 06 / 11 Contents: 1.Name of the reporting media: Commercial Times 2.Date of the report:2012/06/11 3.Content of the report: CHT and Rhythm & Hues (R&H) plan to set up a joint venture to provide] [8 To announce the Company’s May 2012 revenues Date of events: 201 2 / 06 / 11 Contents: 1.Date of occurrence of the event:2012/06/11 3.Relationship to the Company (please enter “head office” or “affiliate company”):Head office 4.Reciprocal shareholding ratios: N/A 5.Cause of occurrence: Chunghwa Telecom today announced a 2.0% year-over-year decrease in unaudited unconsolidated total revenue to NT$15.27 billion in] [9 Chunghwa Telecom June 1 1 , 2012 This is to report the changes or status of 1) Sales volume 2) Funds lent to other parties 3) Endorsements and guarantees 4) Financial derivative transactions for the period of May 201 2 1) Sales volume (NT$ Thousand) Period Items 201 2 201 1 Changes % May Invoice amount 1 5 ,] [6 /1 2 Chunghwa Telecom Co., Ltd.]

[To announce the differences between ROC GAAP and US GAAP for 2011 financial statements Date of events: 2011/ 04 / 20 Contents: 1.Date of occurrence of the event:2012/04/20 2.Cause of occurrence: To announce the differences between ROC GAAP and US GAAP for 2011 financial statements. 3.Content of overseas financial report required to be adjusted due to inconsistency in the accounting] [Chunghwa Telecom holds investor conference call for the first quarter of 2012 operation results Date of events: 2011/ 04 / 23 Contents: 1.Date of the investor/press conference or the date that the Company disclose its financial or business information to the public:2012/04/30 2.Location of the investor/press conference or the location that the Company disclose its financial or business information to] [The Board approves to change the head of Mobile Business Group Date of events: 2011/ 04 / 27 Contents: 1.Date of occurrence of the event:2012/04/27 Chunghwa Telecom Co., Ltd. 3.Relationship to the Company (please enter “head office” or “affiliate company”):Head office 4.Reciprocal shareholding ratios: N/A 5.Cause of occurrence: The 15th meeting of the 6th term board of directors approves the] [Supplementary annou n cement regarding the board approves the Company’s Annual General Meeting 2012 Date of events: 2011/ 04 / 27 Contents: 1.Date of the board of directors resolution:2012/04/27 2.Date for convening the shareholders’ meeting:2012/06/22 3.Location for convening the shareholders’ meeting: Chunghwa Telecom Training Institute (No. 168, Minzu Road, Banchiao District, New Taipei City, Taiwan, R.O.C.) 4.Cause or subjects for] [To announce the differences between ROC GAAP and US GAAP for the first quarter of 2012 financial statements Date of events: 201 2 / 04 / 29 Contents: 1.Date of occurrence of the event:2012/04/29 2.Cause of occurrence: To announce the differences for the first quarter of 2012 financial statements between ROC GAAP and US GAAP. 3.Content of overseas financial report] [6 The To announce the possible financial impact of first adoption of IFRSs on the consolidated financial statements as of January 1, 2012 Date of events: 201 2 / 04 / 29 Contents: 1.Date of occurrence of the event:2012/04/27 Chunghwa Telecom Co., Ltd. 3.Relationship to the Company (please enter “head office” or “affiliate company”):Head office 4.Reciprocal shareholding ratios: N/A 5.Cause] [7 Chunghwa Telecom participates in an investors conference Date of events: 201 2 / 05 / 03 Contents: 1.Date of the investor conference:2012/05/08 2.Time of the investor conference:09:00 3.Location of the investor conference: Taipei 4.Brief information disclosed in the investor conference: The conference will be held by Citigroup Global Markets Taiwan Securities. 5.The presentation of the investor conference release: Please] [8 To announce the Company’s April 2012 revenues Date of events: 201 2 / 05 / 10 Contents: 1.Date of occurrence of the event:2012/05/10 3.Relationship to the Company (please enter “head office” or “affiliate company”):Head office 4.Reciprocal shareholding ratios: N/A 5.Cause of occurrence: Chunghwa Telecom today announced a 2.2% year-over-year decrease in unaudited unconsolidated total revenue to NT$15.7 billion in] [9 Chunghwa Telecom May 1 0 , 2012 This is to report the changes or status of 1) Sales volume 2) Funds lent to other parties 3) Endorsements and guarantees 4) Financial derivative transactions for the period of Apr 201 2 1) Sales volume (NT$ Thousand) Period Items 201 2 201 1 Changes % Apr Invoice amount 16,077,323 16,652,778 (-)575,455] [5 /1 1 Chunghwa Telecom Co., Ltd.]