6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

May, 2026

Commission File Number 001-10306

NatWest Group plc

250 Bishopsgate,

London, EC2M 4AA

United Kingdom

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

The following information was issued as Company announcements in London, England and is furnished pursuant to General Instruction B to the General Instructions to Form 6-K:

NatWest Group plc

Publication of Supplementary Prospectus

The following supplementary prospectus has been approved by the Financial Conduct Authority and is available for viewing:

Second Supplementary Prospectus dated 1 May 2026 to the NatWest Group plc £40,000,000,000 Euro Medium Term Note Programme of 5 December 2025 (the "Supplementary Prospectus").

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

http://www.rns-pdf.londonstockexchange.com/rns/8767C_1-2026-5-1.pdf

A copy of the above Supplementary Prospectus has 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:

Scott Forrest

Head of NatWest Treasury DCM

Tel: +44 (0) 7747 455 969

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Supplementary Prospectus (and the Prospectus to which it relates) 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 of these countries and/or to whom the offer contained in the Prospectus and the Supplementary Prospectus is not addressed. Prior to relying on the information contained in the Prospectus and the Supplementary Prospectus you must ascertain from the Prospectus 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.

Legal Entity Identifier

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.