Publication of a Supplementary Prospectus

Summary by AI ^BETAClose X

Nationwide Building Society has published a supplement to its U.S.$35,000,000,000 European Note Programme Base Prospectus, originally dated 1 August 2025. This supplement, dated 15 June 2026, has been approved by the Financial Conduct Authority and is available for viewing, along with previous supplements. The document is intended for UK and EU MiFIR professionals and eligible counterparties only.

Disclaimer*

Nationwide Building Society

15 June 2026

Publication of a Supplement

The following supplement to the Base Prospectus referred to below has been approved by the Financial Conduct Authority and is available for viewing:

Nationwide Building Society

Supplement dated 15 June 2026 to the following Base Prospectus previously published by Nationwide Building Society:

Base Prospectus dated 1 August 2025 prepared in connection with the Nationwide Building Society U.S.$35,000,000,000 European Note Programme, as previously supplemented on 20 November 2025, 16 December 2025, 9 April 2026 and 21 May 2026.

To view the full document, please paste the following URL into the address bar of your browser:

http://www.rns-pdf.londonstockexchange.com/rns/3452I_1-2026-6-15.pdf

A copy of the above document has also been submitted to the National Storage Mechanism and will shortly be available for inspection at: https://data.fca.org.uk/#/nsm/nationalstoragemechanism.

For further information, please contact:

Nationwide Building Society

Vikas Sidhu

Head of Investor Relations and Treasury Sustainability

Telephone: +44 (0) 7738 273287

Email: Vikas.Sidhu@nationwide.co.uk

Nationwide Building Society

Nationwide House

Pipers Way

Swindon SN38 1NW

Legal Entity Identifier (LEI):

Nationwide Building Society: 549300XFX12G42QIKN82

DISCLAIMER - INTENDED ADDRESSEES

UK MiFIR professionals/ECPs only/No UK PRIIPs KID or CCI product summary

EU MiFID II professionals/ECPs only/No EEA PRIIPs KID

Please note that the information contained in the Base Prospectus, as supplemented, may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Base Prospectus, as supplemented) only and is not intended for use and should not be relied upon by any person outside these countries and/or to whom the offer contained in the Base Prospectus is not addressed. Prior to relying on the information contained in the Base Prospectus, as supplemented, you must ascertain from the Base Prospectus, as supplemented, whether or not you are part of the intended addressees of the information contained therein.

Your right to access this service is conditional upon complying with the above requirement.

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