WBAI [500.com] 6-K: (Original Filing)

[February 9, 2018 100 F Street, N.E. Ladies and Gentlemen: Very truly yours, Shenzhen, the People’s Republic of China] [500.com Limited Announces Appointment of Friedman LLP as its Independent Registered Public Accounting Firm for the Fiscal Year Ended December 31, 2017 and Disposal of Qufan EY Fried]

WBAI [500.com] 6-K: February 9, 2018 100 F Street, N.E. Ladies

[February 9, 2018 100 F Street, N.E. Ladies and Gentlemen: Very truly yours, Shenzhen, the People’s Republic of China] [500.com Limited Announces Appointment of Friedman LLP as its Independent Registered Public Accounting Firm for the Fiscal Year Ended December 31, 2017 and Disposal of Qufan EY Fried]

WBAI [500.com] 6-K: (Original Filing)

[500.com Limited Announces Voting Results of 2017 Annual General Meeting SHENZHEN, China, January 2, 2018—500.com Limited (NYSE: WBAI) (“500.com” or the “Company”), a leading online sports lottery service provider in China, today announced that at its annual general meeting held in Shenzhen on Decemb]

WBAI [500.com] 6-K: 500.com Limited Announces Voting Results of 2017 Annual

[500.com Limited Announces Voting Results of 2017 Annual General Meeting SHENZHEN, China, January 2, 2018—500.com Limited (NYSE: WBAI) (“500.com” or the “Company”), a leading online sports lottery service provider in China, today announced that at its annual general meeting held in Shenzhen on Decemb]

WBAI [500.com] 6-K: (Original Filing)

[500.com Limited Announces Management Change December 18, 2017 SHENZHEN, China, December 18, 2017—500.com Limited (NYSE: WBAI) (“500.com” or the “Company”), a leading online sports lottery service provider in China, today announced that Mr. Min Yu has resigned as Chief Financial Officer of the Compan]

WBAI [500.com] 6-K: 500.com Limited Announces Management Change December 18, 2017

[500.com Limited Announces Management Change December 18, 2017 SHENZHEN, China, December 18, 2017—500.com Limited (NYSE: WBAI) (“500.com” or the “Company”), a leading online sports lottery service provider in China, today announced that Mr. Min Yu has resigned as Chief Financial Officer of the Compan]

WBAI [500.com] SC 13D/A: SCHEDULE 13D CUSIP No. 338829R100 Page 2 1

[SCHEDULE 13D CUSIP No. 338829R100 Page 2 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Tsinghua Unigroup International Co., Ltd. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒ 3 SEC USE ONLY 4 SOURCE OF FUNDS WC]

WBAI [500.com] SC 13D/A: (Original Filing)

[SCHEDULE 13D CUSIP No. 338829R100 Page 2 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Tsinghua Unigroup International Co., Ltd. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒ 3 SEC USE ONLY 4 SOURCE OF FUNDS WC]

WBAI [500.com] SC 13D/A: (Original Filing)

[SCHEDULE 13D CUSIP No. 338829R100 Page 2 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Tsinghua Unigroup International Co., Ltd. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒ 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5]

WBAI [500.com] SC 13D/A: SCHEDULE 13D CUSIP No. 338829R100 Page 2 1

[SCHEDULE 13D CUSIP No. 338829R100 Page 2 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Tsinghua Unigroup International Co., Ltd. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒ 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5]

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