Director/PDMR Shareholding

Vianet Group plc

(the "Company")

Director's Dealings

The Company was notified on 9th June 2016 by Stewart Darling, CEO of Vianet Group plc, that his pension fund purchased 30,000 ordinary shares at 98p each, on 9th June 2016, bringing his total voting interests to 63,244 ordinary shares representing 0.23% of the total share capital with voting rights of the Company.

Contacts:

Enquiries:

James Dickson, Non-Executive Chairman / Mark Foster CFO T: +44 (0)1642 358 800

Stephen Keys/Mark Connelly Cenkos Securities plc T: +44 (0)20 7397 8900