Director/PDMR Shareholding

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

 James Dickson

2

Reason for the notification

a)

Position/status

PDMR (Chairman)

b)

Initial notification /Amendment

Initial notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Vianet Group plc

b)

LEI

NA

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary shares of 10 p each

ISIN: GB00B13YVN56

b)

Nature of the transaction

Purchase

c)

Price(s) and volume(s)

d)

Aggregated information

- Aggregated volume

- Price

NA

e)

Date of the transaction

14 July 2016

f)

Place of the transaction

London Stock Exchange

Vianet Group plc

James Dickson, Chairman

Tel: +44 (0) 1642 358 800

Mark Foster, CFO & Company Secretary

www.vianetplc.com