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]

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: (Original Filing)

[If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. ☐. * The remainder of this cover page shall be fill]

WBAI [500.com] SC 13D/A: If the filing person has previously filed a

[If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. ☐. * The remainder of this cover page shall be fill]

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

[SCHEDULE 13D CUSIP No. 338829R100 Page 3 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 6 CITIZENSHIP OR PLACE OF O]

WBAI [500.com] SC 13D/A: SCHEDULE 13D CUSIP No. 338829R100 Page 3 1

[SCHEDULE 13D CUSIP No. 338829R100 Page 3 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 6 CITIZENSHIP OR PLACE OF O]

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

[500.com Limited Announces Financial Results For the First Quarter of 2017 SHENZHEN, China, May 10, 2017—500.com Limited (NYSE: WBAI) (“500.com” or the “Company”), a leading online sports lottery service provider in China, today reported its unaudited financial results for the first quarter ended Mar]

WBAI [500.com] 6-K: 500.com Limited Announces Financial Results For the First

[500.com Limited Announces Financial Results For the First Quarter of 2017 SHENZHEN, China, May 10, 2017—500.com Limited (NYSE: WBAI) (“500.com” or the “Company”), a leading online sports lottery service provider in China, today reported its unaudited financial results for the first quarter ended Mar]

WBAI [500.com] 20-F: (Original Filing)

[None None Indicate the number of outstanding shares of each of the Issuer’s classes of capital or common stock as of the close of the period covered by the annual report. 335,494,792 Class A ordinary shares and 74,400,299 Class B ordinary shares, par value US$0.00005 per share, as of December 31, 20]

WBAI [500.com] 20-F: None None Indicate the number of outstanding shares

[None None Indicate the number of outstanding shares of each of the Issuer’s classes of capital or common stock as of the close of the period covered by the annual report. 335,494,792 Class A ordinary shares and 74,400,299 Class B ordinary shares, par value US$0.00005 per share, as of December 31, 20]

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