Issue of equity and transaction in own shares

Vianet Group

(the "Company")

Issue of Equity and Transaction in Own Shares

Application has been made for the admittance to trading of 80,000 ordinary shares in the Company (currently held as Treasury shares) as a result of the exercise of options. It is anticipated that these shares will be admitted to trading on 11 January 2013.

Following admittance to trading the Company will immediately purchase these 80,000 Ordinary Shares at a price of 101 pence per share. The purchased shares will all be held as treasury shares.

Following the above purchase, total number of ordinary shares in issue (excluding shares held in treasury) will be 27,792,164. The Company holds 456,000 ordinary shares as treasury shares.

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