NATIONAL GRID PLC

For the period ended Mar 31, 2026. Filed Jun 3, 2026.

About this filing

The yearly report of a company based outside the US. It covers much of what a 10-K does, and may follow accounting rules other than US ones.

FY2026 · Filed Jun 3, 2026

Use the contents to explore the available documents and sections.

NGG$83.15-3.2%Stored close · as of Nov 6, 2026

Contents

The Board has adopted a Code of Ethics. The Group’s Code of

Ethics is available on our website nationalgrid.com/about-us/our-

vision-and-values.

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.