VIANET GROUP PLC

Declaration of Voting Results & Voting Rights Announcements • Oct 15, 2025

National Storage Mechanism | Additional information

RNS Number : 3764D

Vianet Group PLC

15 October 2025

Vianet Group PLC

(the "Company")

Share Buyback and Total Voting Rights

Further to the Company's announcement made on 3 December 2024, and several subsequent purchases the Company announces that, on 14 October 2025, it purchased a further 52,000 ordinary shares of 10 pence each in the Company ("Ordinary Shares").

The purchased Ordinary Shares will be cancelled.

Date of purchase:	14 October 2025
Aggregate number of ordinary shares purchased:	52,000
Lowest price paid per share (pence per share):	65.80
Highest price paid per share (pence per share):	65.80
Volume weighted average price paid per share (pence per share):	65.80

Total Voting Rights

Following the purchase and cancellation of these Ordinary Shares, the Company's issued share capital will consist of 28,425,164 Ordinary Shares with each Ordinary Share carrying the right to one vote. There are no Ordinary Shares held in treasury and therefore, the total number of voting rights in the Company following cancellation will be 28,425,164. This figure may be used by shareholders in the Company as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the share capital of the Company under the Disclosure Guidance and Transparency Rules.

In accordance with Article 5(1)(b) of Regulation (EU) No 596/2014 (the Market Abuse Regulation), a detailed breakdown of individual trades is available below:

No. of Ordinary Shares Purchased	Transaction price (Pence)	Time of transaction	Trading Venue
52,000	65.80	15:28 p.m.	London Stock Exchange (AIMX)

Enquiries:

Vianet Group PLC
James Dickson, Chairman & CEO Sarah Bentham, CFO	Tel: +44 (0) 1642 358 800 www.vianetplc.com
Cavendish Capital Markets Limited
Stephen Keys / Isaac Hooper	Tel: +44 (0) 20 7220 0500
	www.cavendish.com

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