National Storage Mechanism | Additional information

Vianet Group PLC

(the "Company")

Notification of Major Holdings

Vianet Group plc (AIM: VNET), a leader in delivering actionable data, business insights, and cashless payment solutions through an integrated ecosystem of hardware devices, software platforms, and smart insights portals, is pleased to confirm that the company has received notification that Lord Lee of Trafford has purchased 50,000 ordinary shares of 10 pence each in the Company. Lord Lee's total voting rights attached to shares in the Company is 3.98% as of 10 November 2025.

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

Investor Enquiries:
Dale Bellis	Tel: +44 (0) 20 7397 1928
	www.cavendish.com

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