| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2014-02-14 | FMR LLC | 21Vianet Group, Inc. | 35,749,182 | 12.6% | EDGAR |
| SC 13G/A | 2014-02-14 | Ueno Yoshihisa | 21Vianet Group, Inc. | 8,404,200 | 2.1% | EDGAR |
| SC 13G/A | 2014-02-13 | Chen Sheng | 21Vianet Group, Inc. | 43,819,561 | 11.3% | EDGAR |
| SC 13G/A | 2014-02-07 | WADDELL & REED FINANCIAL INC | 21Vianet Group, Inc. | 2,320,300 | 4.8% | EDGAR |
| SC 13G | 2014-01-30 | Kylin Management LLC | 21Vianet Group, Inc. | 11,117,910 | 3.9% | EDGAR |
| SC 13G/A | 2013-12-09 | Pendragon Securities Ltd | 21Vianet Group, Inc. | 2,220,583 | 3.7% | EDGAR |
| SC 13D/A | 2013-10-30 | Granite Global Venture III L P | 21Vianet Group, Inc. | 4,284,073 | 7.1% | EDGAR |
| SC 13D | 2013-10-25 | TEMASEK HOLDINGS (PRIVATE) LTD | 21Vianet Group, Inc. | 40,000,000 | - | EDGAR |
| SC 13G/A | 2013-02-14 | FMR LLC | 21Vianet Group, Inc. | 25,062,174 | 12.3% | EDGAR |
| SC 13G/A | 2013-02-08 | Chen Sheng | 21Vianet Group, Inc. | 45,266,299 | 13.8% | EDGAR |
| SC 13G/A | 2013-02-08 | Cisco Systems International B.V. | 21Vianet Group, Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2013-02-07 | WADDELL & REED FINANCIAL INC | 21Vianet Group, Inc. | 2,307,000 | 5.9% | EDGAR |
| SC 13G/A | 2013-02-06 | Matrix Partners China I GP GP | 21Vianet Group, Inc. | 15,678,544 | 4.5% | EDGAR |
| SC 13G/A | 2013-01-18 | JOHO CAPITAL LLC | 21Vianet Group, Inc. | 1,799,206 | 4.6% | EDGAR |
| SC 13G | 2012-10-10 | FMR LLC | 21Vianet Group, Inc. | 18,847,476 | 10.4% | EDGAR |
| SC 13G | 2012-08-31 | Pendragon Securities Ltd | 21Vianet Group, Inc. | 3,763,595 | 6.5% | EDGAR |
| SC 13G | 2012-03-08 | JOHO CAPITAL LLC | 21Vianet Group, Inc. | 1,617,106 | 5.4% | EDGAR |
| SC 13G/A | 2012-02-14 | WADDELL & REED FINANCIAL INC | 21Vianet Group, Inc. | 556,500 | 1.8% | EDGAR |
| SC 13G | 2012-02-14 | Ueno Yoshihisa | 21Vianet Group, Inc. | 18,004,200 | 5.5% | EDGAR |
| SC 13G | 2012-02-14 | Chen Sheng | 21Vianet Group, Inc. | 62,012,757 | 25.5% | EDGAR |