RNS ANNOUNCEMENT

NATIONWIDE BUILDING SOCIETY

Legal Entity Identifier (LEI): 549300XFX12G42QIKN82

€45,000,000,000 GLOBAL COVERED BOND PROGRAMME

12 June 2026

Publication of Prospectus

The following prospectus produced in connection with the €45,000,000,000 Global Covered Bond Programme (the Programme) established by Nationwide Building Society is available for viewing:

Prospectus dated 12 June 2026, prepared in connection with the €45,000,000,000 Global Covered Bond Programme established by Nationwide Building Society.

Terms used and undefined in this announcement shall have the meaning given to such terms in the Prospectus dated 12 June 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/1738I_1-2026-6-12.pdf

A copy of the Prospectus will also be 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:

Vikas Sidhu

Head of Investor Relations and Treasury Sustainability

Nationwide Building Society

Nationwide House, Pipers Way

Swindon SN38 1NW

United Kingdom

Telephone:            +44 (0) 7738 273 287

Email:                    [email protected]

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Prospectus may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Prospectus) 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 Prospectus is not addressed. Prior to relying on the information contained in the Prospectus you must ascertain from the Prospectus whether or not you are part of the intended addressees of the information contained therein.

In particular, the Prospectus does not constitute an offer of securities for sale in the United States. This is not for distribution in the United States. The securities described herein have not been, and will not be, registered under the U.S. Securities Act of 1933, as amended (the "Securities Act"), or under any relevant securities laws of any state of the United States of America and are subject to U.S. tax law requirements. Subject to certain exceptions, the securities may not be offered or sold within the United States or to, or for the account or benefit of, U.S. persons or to persons within the United States of America, as such terms are defined in Regulation S under the Securities Act. There will be no public offering of the securities in the United States.

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