THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION AS STIPULATED UNDER THE UK MARKET ABUSE REGULATION. UPON THE PUBLICATION OF THIS ANNOUNCEMENT, SUCH INSIDE INFORMATION IS NOW CONSIDERED TO BE IN THE PUBLIC DOMAIN

23 December 2025

DIGITAL 9 INFRASTRUCTURE PLC

("D9" or the "Company" and, together with its subsidiaries, the "Group")

Arqiva Pre-Emption Rights

Prior to the expiry of the pre‑emption notice disclosed in the Company's recent Portfolio Update, the Board confirms that D9 will not exercise its pre‑emption rights to acquire up to a further 26.5% stake in Arqiva.

Under the New Investment Policy approved in March 2024, the Company's shareholders expressed a clear preference for capital returns, and that the Company no longer undertakes new or follow‑on investments except where required to protect or enhance value or support an orderly disposal of existing portfolio assets (together a "Permitted Investment").

The Board, together with the Investment Manager and its advisers, conducted detailed due diligence to assess whether exercising the pre‑emption rights to commit D9 to a further investment in Arqiva (which would on realisation be subject to the Company's VLNs being repaid in full) would be in shareholders' best interests as the Company implements its managed wind-down. In doing so, the Board together with the Investment Manager considered the balance of risk, value maximisation, and capital return priorities in reaching their conclusion.

ENDS.

Notes to Editors

Capitalised terms used but not defined in this announcement shall have the same meaning as given in prior announcements of the Company.

Contacts

LEI Code: 213800OQLX64UNS38U92

The person responsible for arranging the release of this announcement on behalf of the Company is Uloma Adighibe of Hanway Advisory Limited, the Delegated Company Secretary.

About Digital 9 Infrastructure plc

Digital 9 Infrastructure plc (DGI9) is an investment trust listed on the London Stock Exchange and a constituent of the FTSE All-Share, with the ticker DGI9. The Company's investment objective is to undertake a Managed wind-down of the Company and realise all existing assets in the Company's portfolio in an orderly manner. For more information, please visit www.d9infrastructure.com.

About InfraRed Capital Partners (Investment Manager to D9 appointed to effect the wind-down)

InfraRed was appointed in an advisory position on 11 October 2024 and AIFM on 11 December 2024 to effect the Managed Wind-Down of D9.

InfraRed manages US$13bn of equity capital for investors around the globe, in listed and private funds across both core and value-add strategies. InfraRed combines a global reach, operating worldwide from offices in London, Madrid, New York, Sydney and Seoul, with deep sector expertise from a team of more than 160 people. InfraRed is part of SLC Management, the institutional alternatives and traditional asset management business of Sun Life, and benefits from its scale and global platform.

Further details can be found on InfraRed's website www.ircp.com.