REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Date: 28 August 2026
Commission File Number: 001-14958
NATIONAL GRID plc
(Translation
of registrant’s name into English)
England and Wales
(Jurisdiction
of Incorporation)
1-3 Strand, London, WC2N 5EH, United Kingdom
(Address
of principal executive office)
Indicate
by check mark whether the registrant files or will file annual
reports under cover of Form 20-F or Form 40-F.
☒ Form 20-F ☐ Form 40-F
Indicate
by check mark if the registrant is submitting the Form 6-K in paper
as permitted by Regulation S-T Rule
101(b)(1): ☐
Indicate
by check mark if the registrant is submitting the Form 6-K in paper
as permitted by Regulation S-T Rule
101(b)(7): ☐
Indicate
by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information
to the Commission pursuant to Rule 12g3- 2(b) under the Securities
Exchange Act of 1934. ☐ Yes ☒ No
If
“Yes” is marked, indicate below the file number
assigned to the registrant in connection with Rule 12g3-2(b):
n/a
EXHIBIT INDEX
Exhibit No.
Description
99.1
Exhibit
99.1 Announcement sent to the London Stock Exchange on 03 August
2026— Total Voting Rights
99.2
Exhibit
99.2 Announcement sent to the London Stock Exchange on 04 August
2026— Publication of a Supplementary Prospectus
99.3
Exhibit
99.3 Announcement sent to the London Stock Exchange on 10 August
2026— Director/PDMR Shareholding
99.4
Exhibit
99.4 Announcement sent to the London Stock Exchange on 17 August
2026— Publication of a Prospectus
Exhibit
99.1
3 August 2026
National Grid plc ('National
Grid' or 'Company')
Voting Rights update
National Grid's registered capital as of 31 July 2026 consisted
of5,249,831,589 ordinary
shares, of which, 223,031,204 were held as treasury
shares; leaving a balance of 5,026,800,385 with voting
rights.
The figure of5,026,800,385 may
be used by shareholders as the denominator for the calculations by
which they will determine if they are required to notify their
interest in, or a change to their interest in, National Grid under
the FCA's Disclosure Guidance and Transparency
Rules.
Julian
Baddeley
Group Company Secretary
Exhibit
99.2
4 August 2026
National Grid plc / National Grid Electricity Transmission
plc
Publication of a Supplementary Prospectus
The following supplementary prospectus has been approved by the
Financial Conduct Authority and is available for
viewing:
The Supplementary Prospectus dated 4
August 2026 (the "SupplementaryProspectus")
supplementing the prospectus dated 19 August 2025 (as supplemented
by the first supplement to the prospectus dated 23 January 2026
(together, the "Prospectus")) for the National Grid plc and National Grid
Electricity Transmission plc Euro 20,000,000,000 Euro Medium Term
Note Programme.
The Supplementary Prospectus should be read and construed in
conjunction with the Prospectus.
To view the full Supplementary Prospectus, please paste the
following URL into the address bar of your browser:
A copy of the Supplementary Prospectus has been submitted to the
National Storage Mechanism and will shortly be available to the
public for inspection at https://data.fca.org.uk/#/nsm/nationalstoragemechanism.
For further information, please contact:
Kwok Liu
+44 (0) 7900 405 729(m)
Deputy Treasurer, Funding & Investment
National Grid plc
Ben Davis
+44 (0) 7971 539999
Senior Manager, Media & PR
National Grid plc
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.
Your right to access this service is conditional upon complying
with the above requirement.
Exhibit
99.3
10 August 2026
National Grid plc ('National
Grid' or 'Company')
Notification of Transaction of Person Discharging Managerial
Responsibilities ('PDMRs')
This announcement is made in accordance with Article
19of
the Market Abuse Regulation ('MAR'). In accordance with MAR, the
relevant Financial Conduct Authority notification is set out
below.
1
Details of the person discharging managerial responsibilities /
person closely associated
a)
Name
Andy
Agg
2
Reason for the notification
a)
Position/status
Chief
Financial Officer
b)
Initial notification /Amendment
Initial
notification
3
Details of the issuer, emission allowance market participant,
auction platform, auctioneer or auction monitor
a)
Name
National
Grid plc
b)
LEI
8R95QZMKZLJX5Q2XR704
4
Details of the transaction(s): section to be repeated for (i) each
type of instrument; (ii) each type of transaction; (iii) each date;
and (iv) each place where transactions have been
conducted
a)
Description of the financial instrument, type of
instrument
Identification code
Ordinary
shares of 12 204/473p each
GB00BDR05C01
b)
Nature of the transaction
Monthly
purchase of securities ("partnership shares") under the Share
Incentive Plan
c)
Price(s) and volume(s)
Price(s)
Volume(s)
GBP
11.9781
12
d)
Aggregated information
- Aggregated volume
- Price
e)
Date of the transaction
2026.08.07
f)
Place of the transaction
London
Stock Exchange (XLON)
Exhibit
99.4
17th August 2026
National Grid plc / National Grid Electricity Transmission
plc
Publication of a Prospectus
The following prospectus has been approved by the Financial Conduct
Authority and is available for viewing:
The Prospectus dated 17 August 2026
(the "Prospectus") for the National Grid plc and National Grid
Electricity Transmission plc Euro 20,000,000,000 Euro Medium Term
Note Programme.
To view the full document, please paste the following URL into the
address bar of your browser:
A copy of the Prospectus has been submitted to the National Storage
Mechanism and will shortly be available to the public for
inspection at https://data.fca.org.uk/#/nsm/nationalstoragemechanism.
For further information, please contact:
Kwok Liu
+44 (0) 7900 405 729(m)
Deputy Treasurer, Funding & Investment
National Grid plc
Illtud Harri
+44 (0) 7920 503 600 (m)
Head of Media, Communications & Brand
National Grid plc
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.
Your right to access this service is conditional upon complying
with the above requirement.
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.