(Sharecast News) - Vianet revealed on Friday that chairman and chief executive James Dickson had acquired 40,000 ordinary shares in the AIM-listed firm.

Dickson, who took over as CEO in 2003, purchased the shares on Thursday at an average price of 69p each, for a total value of £27,600.

Following the transaction, Dickson holds a beneficial interest in 5.26m ordinary Vianet shares, representing approximately 18.52% of the company's issued share capital.

As of 1545 GMT, Vianet shares were up 0.88% at 69.10p.

Reporting by Iain Gilbert at Sharecast.com

Top Director Buys

The Magnum Ice Cream Company N.v. (di) (MICC)

Director name: Bhattacharya,Abhijit

Amount purchased: 5,046 @ 13.64

Value: 61,994.60

The Magnum Ice Cream Company N.v. (di) (MICC)

Director name: Bhattacharya,Abhijit

Amount purchased: 5,000 @ 13.50

Value: 60,810.81

Vianet Group (VNET)

Director name: Dickson,James

Amount purchased: 40,000 @ 69.00p

Value: £27,600.00

Gcp Infrastructure Investments Ltd (GCP)

Director name: Crichard,Dawn

Amount purchased: 32,413 @ 77.12p

Value: £24,997.88

Nativo Resources (NTVO)

Director name: Yates,Christian

Amount purchased: 4,512,841 @ 0.42p

Value: £18,983.72

Nativo Resources (NTVO)

Director name: Birrell,Stephen

Amount purchased: 4,468,887 @ 0.42p

Value: £18,769.32

Top Director Sells

Nativo Resources (NTVO)

Director name: Birrell,Stephen

Amount sold: 4,472,248 @ 0.45p

Value: £20,125.12

Nativo Resources (NTVO)

Director name: Yates,Christian

Amount sold: 4,525,358 @ 0.42p

Value: £19,006.50