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 6 CITIZENSHIP OR PLACE OF O]

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 6 CITIZENSHIP OR PLACE OF O]

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

[Page 2 of 8 CUSIP No. 33829R100 SCHEDULE 13D 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Sequoia Capital 2010 CGF Holdco, Ltd. No. 98-0660289 IRS Identification 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) ☐ (b) ☐ 3. SEC Us]

WBAI [500.com] SC 13D/A: Page 2 of 8 CUSIP No. 33829R100 SCHEDULE

[Page 2 of 8 CUSIP No. 33829R100 SCHEDULE 13D 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Sequoia Capital 2010 CGF Holdco, Ltd. No. 98-0660289 IRS Identification 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) ☐ (b) ☐ 3. SEC Us]

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

[Page 2 of 8 CUSIP No. 33829R100 SCHEDULE 13D 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Sequoia Capital 2010 CGF Holdco, Ltd. No. 98-0660289 IRS Identification 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) ☐ (b) ☐ 3. SEC Us]

WBAI [500.com] SC 13D/A: Page 2 of 8 CUSIP No. 33829R100 SCHEDULE

[Page 2 of 8 CUSIP No. 33829R100 SCHEDULE 13D 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Sequoia Capital 2010 CGF Holdco, Ltd. No. 98-0660289 IRS Identification 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) ☐ (b) ☐ 3. SEC Us]

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

[500.com Limited Announces Unaudited Financial Results For the First Quarter of 2019 SHENZHEN, China, May 14, 2019—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]

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

[500.com Limited Announces Unaudited Financial Results For the First Quarter of 2019 SHENZHEN, China, May 14, 2019—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]

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

[500.com Limited Announces Change of Board Composition May 14, 2019 SHENZHEN, China, May 14, 2019—500.com Limited (NYSE: WBAI) (“500.com” or the “Company”), a leading online sports lottery service provider in China, today announced that effective June 1, 2019, Mr. Huixuan Wang, a director and Chairma]

WBAI [500.com] 6-K: 500.com Limited Announces Change of Board Composition May

[500.com Limited Announces Change of Board Composition May 14, 2019 SHENZHEN, China, May 14, 2019—500.com Limited (NYSE: WBAI) (“500.com” or the “Company”), a leading online sports lottery service provider in China, today announced that effective June 1, 2019, Mr. Huixuan Wang, a director and Chairma]

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