[Page CUSIP No. 43713W107 1. Names of Reporting Persons: 2. Check the Appropriate Box if a Member of a (See Instructions): Joint filing 3. SEC Use Only 4. Citizenship or Place of Organization: Number of Shares Beneficially Owned by Each Reporting Person With: 5. Sole Voting Power: 0 6. Shared Voting Power:]
[Page CUSIP No. 22943F100 1. Names of Reporting Persons: IRS No. 13-2527171 2. Check the Appropriate Box if a Member of a Group (See Instructions): Joint filing 3. SEC Use Only 4. Citizenship or Place of Organization: Number of Shares Beneficially Owned by Each Reporting Person With: 5. Sole Voting Power: 0 6. Shared Voting Power: 12,990,429 7. Sole Dispositive]
[Page CUSIP No. 22943F100 1. Names of Reporting Persons: IRS No. 13-2527171 2. Check the Appropriate Box if a Member of a Group (See Instructions): Joint filing 3. SEC Use Only 4. Citizenship or Place of Organization: Number of Shares Beneficially Owned by Each Reporting Person With: 5. Sole Voting Power: 0 6. Shared Voting Power: 12,990,429 7. Sole Dispositive]
[JOINT FILING AGREEMENT Dated: February 2, 2012 Matrix Partners China I, L.P. David Su Director Matrix Partners China I-A, L.P. David Su Director Matrix China Management I, L.P. David Su Director Matrix China I GP GP, Ltd. David Su] [SCHEDULE 13G (Rule 13d–102) (Amendment No. _________) * 21Vianet Group, Inc. (Name of Issuer) Class A Ordinary Shares, par value US$0.00001 per share (Title of Class of Securities) 90138A 10 3 (CUSIP Number) December 31, 2011 (Date of Event Which Requires Filing of this Statement) o Rule 13d-1(b) o Rule 13d-1(c) x Rule 13d-1(d) *The remainder of this cover page]
[JOINT FILING AGREEMENT Dated: February 2, 2012 Matrix Partners China I, L.P. David Su Director Matrix Partners China I-A, L.P. David Su Director Matrix China Management I, L.P. David Su Director Matrix China I GP GP, Ltd. David Su] [SCHEDULE 13G (Rule 13d–102) (Amendment No. _________) * 21Vianet Group, Inc. (Name of Issuer) Class A Ordinary Shares, par value US$0.00001 per share (Title of Class of Securities) 90138A 10 3 (CUSIP Number) December 31, 2011 (Date of Event Which Requires Filing of this Statement) o Rule 13d-1(b) o Rule 13d-1(c) x Rule 13d-1(d) *The remainder of this cover page]
[Jason Liqing Zeng Frontier Technology Holdings Limited EX-99.1 2 d294706dex991.htm JOINT FILING AGREEMENT] [1 NAME OF REPORTING PERSON Jason Liqing Zeng 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* ¨ ¨ (a) 3]
[Jason Liqing Zeng Frontier Technology Holdings Limited EX-99.1 2 d294706dex991.htm JOINT FILING AGREEMENT] [1 NAME OF REPORTING PERSON Jason Liqing Zeng 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* ¨ ¨ (a) 3]
[CUSIP No.477374 102 1. Names of Reporting Persons 2. Check the Appropriate Box if a Member of a (See Instructions) (a) o (b) o 3. SEC Use Only 4. Citizenship or Place of Organization Number of 5. Sole Voting Power 6. Shared Voting Power 7. Sole Dispositive Power 8. Shared Dispositive Power] [Joint Filingreement Haiyan Gong Haiyan Gong Aprilsky Haiyan Gong Director EX-99.1 a12-4108_3ex99d1.htm 2 EX-99.1]
[Roc Yunpeng Cheng Charming China Limited EX-99.1 2 d294006dex991.htm JOINT FILING AGREEMENT] [1 NAME OF REPORTING PERSON Roc Yunpeng Cheng 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* ¨ ¨ (a)]
[CUSIP No. G98777108 ]13G 1]
