# EDGAR Filing Document

**Accession Number:** 0001004315
**File Stem:** 0001654954-25-010181
**Filing Date:** 2025-8
**Character Count:** 13894
**Document Hash:** 5789e36c36271934f6f85b156db00dcd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001654954-25-010181.hdr.sgml**: 20250829

**ACCESSION NUMBER**: 0001654954-25-010181

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250829

**FILED AS OF DATE**: 20250829

**DATE AS OF CHANGE**: 20250829

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NATIONAL GRID PLC
- **CENTRAL INDEX KEY:** 0001004315
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATURAL GAS TRANSMISSION [4922]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 980367158
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-14958
- **FILM NUMBER:** 251279076

**BUSINESS ADDRESS:**
- **STREET 1:** 1-3 STRAND
- **CITY:** LONDON
- **STATE:** X0
- **ZIP:** WC2N 5EH
- **BUSINESS PHONE:** (44) 207 004 3220

**MAIL ADDRESS:**
- **STREET 1:** 1-3 STRAND
- **CITY:** LONDON
- **STATE:** X0
- **ZIP:** WC2N 5EH

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NATIONAL GRID TRANSCO PLC
- **DATE OF NAME CHANGE:** 20021121

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NATIONAL GRID GROUP PLC
- **DATE OF NAME CHANGE:** 19991007

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NATIONAL GRID HOLDING PLC
- **DATE OF NAME CHANGE:** 19991007

**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**

 **Date: 29 August 2025**

 **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**

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| | |
|:---|:---|
| **Exhibit No.** | **Description**  |
| 99.1 | Exhibit 99.1 Announcement sent to the London Stock Exchange on 01 August 2025 — Total Voting Rights |
| 99.2 | Exhibit 99.2 Announcement sent to the London Stock Exchange on 08 August 2025 — Director/PDMR Shareholding |
| 99.3 | Exhibit 99.3 Announcement sent to the London Stock Exchange on 19 August 2025 — Publication of a Prospectus |

---

Exhibit 99.1

 **1 August 2025**

 **National Grid plc ('National Grid' or 'Company')**

 **Voting Rights update**

National Grid's registered capital as of 31 July 2025 consisted of 5,191,884,002 ordinary shares, of which, 230,653,898 were held as treasury shares; leaving a balance of 4,961,230,104 with voting rights.

The figure of 4,961,230,104 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

 **8 August 2025**

 **National Grid plc ('National Grid' or 'Company')**

 **Notification of Transactions of Persons Discharging Managerial Responsibilities ('PDMRs')**

This announcement is made in accordance with Article 19 of the Market Abuse Regulation ('MAR'). In accordance with MAR, the relevant Financial Conduct Authority ('FCA') notifications are set out below.

---

| | | | |
|:---|:---|:---|:---|
| **1**<br>| **Details of the person discharging managerial responsibilities / person closely associated** | **Details of the person discharging managerial responsibilities / person closely associated** | **Details of the person discharging managerial responsibilities / person closely associated** |
| a)<br>| Name<br>| Andy Agg | Andy Agg |
| **2**<br>| **Reason for the notification** | **Reason for the notification** | **Reason for the notification** |
| a)<br>| Position/status<br>| Chief Financial Officer | Chief Financial Officer |
| b)<br>| Initial notification /Amendment<br>| Initial notification | Initial notification |
| **3**<br>| **Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor** | **Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor** | **Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor** |
| a)<br>| Name<br>| National Grid plc | National Grid plc |
| b)<br>| LEI<br>| 8R95QZMKZLJX5Q2XR704 | 8R95QZMKZLJX5Q2XR704 |
| **4**<br>| **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** | **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** | **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)<br>| Description of the financial instrument, type of instrument<br>Identification code<br>| Ordinary shares of 12 204/473p each<br>GB00BDR05C01 | Ordinary shares of 12 204/473p each<br>GB00BDR05C01 |
| b)<br>| Nature of the transaction<br>| Monthly purchase of securities ("partnership shares") under the Share Incentive Plan | Monthly purchase of securities ("partnership shares") under the Share Incentive Plan |
| c) | Price(s) and volume(s) | Price(s) | Volume(s) |
| c) | Price(s) and volume(s) | GBP 10.7067 | 14 |
| d)<br>| Aggregated information<br>- Aggregated volume<br>- Price<br>|  |  |
| e)<br>| Date of the transaction<br>| 2025.08.07 | 2025.08.07 |
| f)<br>| Place of the transaction<br>| London Stock Exchange (XLON) | London Stock Exchange (XLON) |

---

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| | | | |
|:---|:---|:---|:---|
| **1**<br>| **Details of the person discharging managerial responsibilities / person closely associated** | **Details of the person discharging managerial responsibilities / person closely associated** | **Details of the person discharging managerial responsibilities / person closely associated** |
| a)<br>| Name<br>| John Pettigrew | John Pettigrew |
| **2**<br>| **Reason for the notification** | **Reason for the notification** | **Reason for the notification** |
| a)<br>| Position/status<br>| Chief Executive | Chief Executive |
| b)<br>| Initial notification /Amendment<br>| Initial notification | Initial notification |
| **3**<br>| **Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor** | **Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor** | **Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor** |
| a)<br>| Name<br>| National Grid plc | National Grid plc |
| b)<br>| LEI<br>| 8R95QZMKZLJX5Q2XR704 | 8R95QZMKZLJX5Q2XR704 |
| **4**<br>| **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** | **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** | **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)<br>| Description of the financial instrument, type of instrument<br>Identification code<br>| Ordinary shares of 12 204/473p each<br>GB00BDR05C01 | Ordinary shares of 12 204/473p each<br>GB00BDR05C01 |
| b)<br>| Nature of the transaction<br>| Monthly purchase of securities ("partnership shares") under the Share Incentive Plan | Monthly purchase of securities ("partnership shares") under the Share Incentive Plan |
| c) | Price(s) and volume(s) | Price(s) | Volume(s) |
| c) | Price(s) and volume(s) | GBP 10.7067  | 14 |
| d)<br>| Aggregated information<br>- Aggregated volume<br>- Price<br>|  |  |
| e)<br>| Date of the transaction<br>| 2025.08.07 | 2025.08.07 |
| f)<br>| Place of the transaction<br>| London Stock Exchange (XLON) | London Stock Exchange (XLON) |

---

---

| | | | |
|:---|:---|:---|:---|
| **1**<br>| **Details of the person discharging managerial responsibilities / person closely associated** | **Details of the person discharging managerial responsibilities / person closely associated** | **Details of the person discharging managerial responsibilities / person closely associated** |
| a)<br>| Name<br>| Will Serle | Will Serle |
| **2**<br>| **Reason for the notification** | **Reason for the notification** | **Reason for the notification** |
| a)<br>| Position/status<br>| Chief People Officer | Chief People Officer |
| b)<br>| Initial notification /Amendment<br>| Initial notification | Initial notification |
| **3**<br>| **Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor** | **Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor** | **Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor** |
| a)<br>| Name<br>| National Grid plc | National Grid plc |
| b)<br>| LEI<br>| 8R95QZMKZLJX5Q2XR704 | 8R95QZMKZLJX5Q2XR704 |
| **4**<br>| **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** | **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** | **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)<br>| Description of the financial instrument, type of instrument<br>Identification code<br>| Ordinary shares of 12 204/473p each<br>GB00BDR05C01 | Ordinary shares of 12 204/473p each<br>GB00BDR05C01 |
| b)<br>| Nature of the transaction<br>| Monthly purchase of securities ("partnership shares") under the Share Incentive Plan | Monthly purchase of securities ("partnership shares") under the Share Incentive Plan |
| c) | Price(s) and volume(s) | Price(s) | Volume(s) |
| c) | Price(s) and volume(s) | GBP 10.7067 | 14 |
| d)<br>| Aggregated information<br>- Aggregated volume<br>- Price<br>|  |  |
| e)<br>| Date of the transaction<br>| 2025.08.07 | 2025.08.07 |
| f)<br>| Place of the transaction<br>| London Stock Exchange (XLON) | London Stock Exchange (XLON) |

---

Exhibit 99.3

 **19th August 2025**

 **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 19 August 2025 (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:

 <u>http://www.rns-pdf.londonstockexchange.com/rns/9476V_1-2025-8-19.pdf</u>

A copy of the Prospectus has been submitted to the National Storage Mechanism and will shortly be available to the public for inspection at *<u>https://data.fca.org.uk/#/nsm/nationalstoragemechanism</u>*.

For further information, please contact:

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| | |
|:---|:---|
| Kwok Liu | +44 (0) 7900 405 729 (m) |
| Deputy Treasurer, Funding & Investment<br> National Grid plc |  |
| Ben Trounson | +1 (929) 585 0339 |
| Head of Media - Corporate Affairs<br> National Grid plc |  |

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 **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.

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| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp; NATIONAL GRID plc | &nbsp;&nbsp;&nbsp; NATIONAL GRID plc |
|  ***By:***<br>|  ***Beth Melges***<br>|
|  | Beth Melges<br> Head of Plc Governance<br>|

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Date: 29 August 2025