6-K
National Grid PLC (NGG)
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: 30 June 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<br>99.1 Announcement sent to the London Stock Exchange on 01 June<br>2026 —<br>Total Voting Rights |
| 99.2 | Exhibit<br>99.2 Announcement sent to the London Stock Exchange on 03 June<br>2026 —<br>Holding(s) in Company |
| 99.3 | Exhibit<br>99.3 Announcement sent to the London Stock Exchange on 10 June<br>2026 —<br>Director/PDMR Shareholding |
| 99.4 | Exhibit<br>99.4 Announcement sent to the London Stock Exchange on 10 June<br>2026 —<br>Director/PDMR Shareholding |
| 99.5 | Exhibit<br>99.5 Announcement sent to the London Stock Exchange on 16 June<br>2026 —<br>Director/PDMR Shareholding |
| 99.6 | Exhibit<br>99.6 Announcement sent to the London Stock Exchange on 19 June 2026<br>— Director/PDMR Shareholding |
Exhibit 99.1
1 June 2026
National Grid plc ('National Grid' or 'Company')
Voting Rights update
National Grid's registered capital as of 31 May 2026 consisted of 5,198,968,690 ordinary shares, of which, 223,258,076 were held as treasury shares; leaving a balance of 4,975,710,614 with voting rights.
The figure of 4,975,710,614 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
3 June 2026
National Grid plc ('National Grid' or 'Company')
Notification of Major Interest in National Grid Ordinary Shares
National Grid has received a notification on Form TR-1 from BlackRock, Inc. that its total interest in National Grid voting ordinary shares is as shown below.
TR-1: Standard form for notification of major holdings
- Issuer Details
ISIN
| GB00BDR05C01 |
|---|
Issuer Name
| NATIONAL<br>GRID PLC |
|---|
UK or Non-UK Issuer
| UK |
|---|
- Reason for Notification
| An<br>acquisition or disposal of voting rights |
|---|
- Details of person subject to the notification obligation
Name
| BlackRock,<br>Inc. |
|---|
City of registered office (if applicable)
| Wilmington |
|---|
Country of registered office (if applicable)
| USA |
|---|
- Details of the shareholder
Full name of shareholder(s) if different from the person(s) subject to the notification obligation, above
City of registered office (if applicable)
Country of registered office (if applicable)
- Date on which the threshold was crossed or reached
| 01-Jun-2026 |
|---|
- Date on which Issuer notified
| 02-Jun-2026 |
|---|
- Total positions of person(s) subject to the notification obligation
| %<br>of voting rights attached to shares (total of 8.A) | %<br>of voting rights through financial instruments (total of 8.B 1 +<br>8.B 2) | Total<br>of both in % (8.A + 8.B) | Total<br>number of voting rights held in issuer | |
|---|---|---|---|---|
| Resulting situation<br>on the date on which threshold was crossed or reached | 8.390000 | 0.190000 | 8.580000 | 427582600 |
| Position of<br>previous notification (if applicable) | 4.940000 | 3.480000 | 8.420000 |
- Notified details of the resulting situation on the date on which the threshold was crossed or reached
8A. Voting rights attached to shares
| Class/Type of shares ISIN code(if possible) | Number<br>of direct voting rights (DTR5.1) | Number<br>of indirect voting rights (DTR5.2.1) | %<br>of direct voting rights (DTR5.1) | % of indirect voting rights (DTR5.2.1) |
|---|---|---|---|---|
| GB00BDR05C01 | 417622779 | 8.390000 | ||
| Sub Total 8.A | 417622779 | 8.390000% |
8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))
| Type of financial instrument | Expiration<br>date | Exercise/conversion<br>period | Number<br>of voting rights that may be acquired if the instrument is<br>exercised/converted | %<br>of voting rights |
|---|---|---|---|---|
| American Depository<br>Receipt | 5996327 | 0.120000 | ||
| Securities<br>Lending | 1239568 | 0.020000 | ||
| Sub Total 8.B1 | 7235895 | 0.140000% |
8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))
| Type of financial instrument | Expiration<br>date | Exercise/conversion<br>period | Physical<br>or cash settlement | Number<br>of voting rights | %<br>of voting rights |
|---|---|---|---|---|---|
| CFD | Cash | 2723926 | 0.050000 | ||
| Sub Total 8.B2 | 2723926 | 0.050000% |
- Information in relation to the person subject to the notification obligation
| 2.<br>Full chain of controlled undertakings through which the voting<br>rights and/or the financial instruments are effectively held<br>starting with the ultimate controlling natural person or legal<br>entities (please add additional rows as necessary) | ||||
|---|---|---|---|---|
| Ultimate controlling person | Name of controlled undertaking | % of voting rights if it equals or is higher than the notifiable<br>threshold | % of voting rights through financial instruments if it equals or is<br>higher than the notifiable threshold | Total of both if it equals or is higher than the notifiable<br>threshold |
| --- | --- | --- | --- | --- |
| BlackRock, Inc.<br>(Chain 1) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 1) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 1) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 1) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 1) | BlackRock<br>International Holdings, Inc. | |||
| BlackRock, Inc.<br>(Chain 1) | BR<br>Jersey International Holdings L.P. | |||
| BlackRock, Inc.<br>(Chain 1) | BlackRock<br>(Singapore) Holdco Pte. Ltd. | |||
| BlackRock, Inc.<br>(Chain 1) | BlackRock HK Holdco<br>Limited | |||
| BlackRock, Inc.<br>(Chain 1) | BlackRock Lux Finco<br>S.a.r.l. | |||
| BlackRock, Inc.<br>(Chain 1) | BlackRock Japan<br>Holdings GK | |||
| BlackRock, Inc.<br>(Chain 1) | BlackRock Japan<br>Co., Ltd. | |||
| BlackRock, Inc.<br>(Chain 2) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 2) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 2) | Trident<br>Merger, LLC | |||
| BlackRock, Inc.<br>(Chain 2) | BlackRock<br>Investment Management, LLC | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock<br>International Holdings, Inc. | |||
| BlackRock, Inc.<br>(Chain 3) | BR<br>Jersey International Holdings L.P. | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock Holdco 3,<br>LLC | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock Cayman 1<br>LP | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock Cayman<br>West Bay Finco Limited | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock Cayman<br>West Bay IV Limited | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock Group<br>Limited | |||
| BlackRock, Inc.<br>(Chain 3) | BlackRock<br>Investment Management (UK) Limited | |||
| BlackRock, Inc.<br>(Chain 4) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 4) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 4) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 4) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 4) | BlackRock<br>International Holdings, Inc. | |||
| BlackRock, Inc.<br>(Chain 4) | BR<br>Jersey International Holdings L.P. | |||
| BlackRock, Inc.<br>(Chain 4) | BlackRock Australia<br>Holdco Pty. Ltd. | |||
| BlackRock, Inc.<br>(Chain 4) | BlackRock<br>Investment Management (Australia) Limited | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock<br>International Holdings, Inc. | |||
| BlackRock, Inc.<br>(Chain 5) | BR<br>Jersey International Holdings L.P. | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock Holdco 3,<br>LLC | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock Cayman 1<br>LP | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock Cayman<br>West Bay Finco Limited | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock Cayman<br>West Bay IV Limited | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock Group<br>Limited | |||
| BlackRock, Inc.<br>(Chain 5) | BlackRock<br>International Limited | |||
| BlackRock, Inc.<br>(Chain 6) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 6) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 6) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 6) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 6) | BlackRock Holdco 4,<br>LLC | |||
| BlackRock, Inc.<br>(Chain 6) | BlackRock Holdco 6,<br>LLC | |||
| BlackRock, Inc.<br>(Chain 6) | BlackRock Delaware<br>Holdings Inc. | |||
| BlackRock, Inc.<br>(Chain 6) | BlackRock<br>Institutional Trust Company, National Association | |||
| BlackRock, Inc.<br>(Chain 7) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 7) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 7) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 7) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 7) | BlackRock Holdco 4,<br>LLC | |||
| BlackRock, Inc.<br>(Chain 7) | BlackRock Holdco 6,<br>LLC | |||
| BlackRock, Inc.<br>(Chain 7) | BlackRock Delaware<br>Holdings Inc. | |||
| BlackRock, Inc.<br>(Chain 7) | BlackRock Fund<br>Advisors | |||
| BlackRock, Inc.<br>(Chain 8) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 8) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 8) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 8) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 9) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 9) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 9) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 9) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 9) | BlackRock<br>International Holdings, Inc. | |||
| BlackRock, Inc.<br>(Chain 9) | BR<br>Jersey International Holdings L.P. | |||
| BlackRock, Inc.<br>(Chain 9) | BlackRock<br>(Singapore) Holdco Pte. Ltd. | |||
| BlackRock, Inc.<br>(Chain 9) | BlackRock HK Holdco<br>Limited | |||
| BlackRock, Inc.<br>(Chain 9) | BlackRock Asset<br>Management North Asia Limited | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock<br>International Holdings, Inc. | |||
| BlackRock, Inc.<br>(Chain 10) | BR<br>Jersey International Holdings L.P. | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock Holdco 3,<br>LLC | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock Cayman 1<br>LP | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock Cayman<br>West Bay Finco Limited | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock Cayman<br>West Bay IV Limited | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock Group<br>Limited | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock<br>(Netherlands) B.V. | |||
| BlackRock, Inc.<br>(Chain 10) | BlackRock Asset<br>Management Deutschland AG | |||
| BlackRock, Inc.<br>(Chain 11) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 11) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 11) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 11) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 11) | BlackRock<br>International Holdings, Inc. | |||
| BlackRock, Inc.<br>(Chain 11) | BlackRock Canada<br>Holdings ULC | |||
| BlackRock, Inc.<br>(Chain 11) | BlackRock Asset<br>Management Canada Limited | |||
| BlackRock, Inc.<br>(Chain 12) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 12) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 12) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 12) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 12) | BlackRock Capital<br>Holdings, Inc. | |||
| BlackRock, Inc.<br>(Chain 12) | BlackRock Advisors,<br>LLC | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock<br>International Holdings, Inc. | |||
| BlackRock, Inc.<br>(Chain 13) | BR<br>Jersey International Holdings L.P. | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock Holdco 3,<br>LLC | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock Cayman 1<br>LP | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock Cayman<br>West Bay Finco Limited | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock Cayman<br>West Bay IV Limited | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock Group<br>Limited | |||
| BlackRock, Inc.<br>(Chain 13) | BlackRock Advisors<br>(UK) Limited | |||
| BlackRock, Inc.<br>(Chain 14) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 14) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 14) | BlackRock Holdco 2,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 14) | BlackRock Financial<br>Management, Inc. | |||
| BlackRock, Inc.<br>(Chain 14) | BlackRock<br>International Holdings, Inc. | |||
| BlackRock, Inc.<br>(Chain 14) | BR<br>Jersey International Holdings L.P. | |||
| BlackRock, Inc.<br>(Chain 14) | BlackRock<br>(Singapore) Holdco Pte. Ltd. | |||
| BlackRock, Inc.<br>(Chain 14) | BlackRock<br>(Singapore) Limited | |||
| BlackRock, Inc.<br>(Chain 15) | BlackRock Saturn<br>Subco, LLC | |||
| BlackRock, Inc.<br>(Chain 15) | BlackRock Finance,<br>Inc. | |||
| BlackRock, Inc.<br>(Chain 15) | Trident<br>Merger, LLC | |||
| BlackRock, Inc.<br>(Chain 15) | BlackRock<br>Investment Management, LLC | |||
| BlackRock, Inc.<br>(Chain 15) | Amethyst<br>Intermediate, LLC | |||
| BlackRock, Inc.<br>(Chain 15) | Aperio<br>Holdings, LLC | |||
| BlackRock, Inc.<br>(Chain 15) | Aperio<br>Group, LLC | |||
- In case of proxy voting
Name of the proxy holder
The number and % of voting rights held
The date until which the voting rights will be held
- Additional Information
| BlackRock Regulatory Threshold Reporting Team<br><br><br><br><br><br>Jana Blumenstein<br><br><br><br><br><br>020<br>7743 3650 |
|---|
- Date of Completion
| 2nd<br>June 2026 |
|---|
- Place Of Completion
| 12<br>Throgmorton Avenue, London, EC2N 2DL, U.K. |
|---|
This notice is in compliance with National Grid's obligations under the Disclosure and Transparency Rules.
Julian Baddeley
Group Company Secretary
Exhibit 99.3
10 June 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 19 of 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 /<br>person closely associated | ||
|---|---|---|---|
| a) | Name | Andy<br>Agg | |
| 2 | Reason for the notification | ||
| a) | Position/status | Chief<br>Financial Officer | |
| b) | Initial notification /Amendment | Initial<br>notification | |
| 3 | Details of the issuer, emission allowance market participant,<br>auction platform, auctioneer or auction monitor | ||
| a) | Name | National<br>Grid plc | |
| b) | LEI | 8R95QZMKZLJX5Q2XR704 | |
| 4 | Details of the transaction(s): section to be repeated for (i) each<br>type of instrument; (ii) each type of transaction; (iii) each date;<br>and (iv) each place where transactions have been<br>conducted | ||
| a) | Description of the financial instrument, type of<br>instrument<br><br><br><br><br><br>Identification code | Ordinary shares of 12 204/473p each<br><br><br><br><br><br>GB00BDR05C01 | |
| b) | Nature of the transaction | Monthly purchase of securities ("partnership shares") under the<br>Share Incentive Plan | |
| c) | Price(s) and volume(s) | Price(s) | Volume(s) |
| GBP 12.0872 | 12 | ||
| d) | Aggregated information<br><br><br><br><br><br>- Aggregated volume<br><br><br><br><br><br>- Price | ||
| e) | Date of the transaction | 2026.06.08 | |
| f) | Place of the transaction | London<br>Stock Exchange (XLON) |
Exhibit 99.4
10 June 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 19 of the Market Abuse Regulation ('MAR') and relates to the National Grid Sharesave maturity on behalf of PDMRs. In accordance with MAR, the relevant Financial Conduct Authority notification is set out below.
| 1 | Details of the person discharging managerial responsibilities /<br>person closely associated | ||
|---|---|---|---|
| a) | Name | Andy<br>Agg | |
| 2 | Reason for the notification | ||
| a) | Position/status | Chief<br>Financial Officer | |
| b) | Initial notification /Amendment | Initial<br>notification | |
| 3 | Details of the issuer, emission allowance market participant,<br>auction platform, auctioneer or auction monitor | ||
| a) | Name | National<br>Grid plc | |
| b) | LEI | 8R95QZMKZLJX5Q2XR704 | |
| 4 | Details of the transaction(s): section to be repeated for (i) each<br>type of instrument; (ii) each type of transaction; (iii) each date;<br>and (iv) each place where transactions have been<br>conducted | ||
| a) | Description of the financial instrument, type of<br>instrument<br><br><br><br><br><br>Identification code | Ordinary shares of 12 204/473p each<br><br><br><br><br><br>GB00BDR05C01 | |
| b) | Nature of the transaction | Exercise of options following maturity of the 2020/21 National Grid<br>5-year Sharesave plan. | |
| c) | Price(s) and volume(s) | Price(s) | Volume(s) |
| GBP 6.2780 | 4,777 | ||
| d) | Aggregated information<br><br><br><br><br><br>- Aggregated volume<br><br><br><br><br><br>- Price | ||
| e) | Date of the transaction | 2026.06.10 | |
| f) | Place of the transaction | Outside<br>a trading venue |
Exhibit 99.5
16 June 2026
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') and relates to the following PDMRs being granted awards under the Company's Annual Performance Plan ('APP') on 15 June 2026, which relates to a percentage of the award for 2025/26 being paid in shares, and which (after tax on the gross award) must be retained until the shareholding requirement is met, and in any event for two years after receipt. This award is subject to clawback and malus provisions.
For further details of the APP, please see the Company's 2025/26 Annual Report and Accounts.
In accordance with MAR the relevant Financial Conduct Authority notifications are set out below.
| 1 | Details of the person discharging managerial responsibilities /<br>person closely associated | ||
|---|---|---|---|
| a) | Name | Andy<br>Agg | |
| 2 | Reason for the notification | ||
| a) | Position/status | Chief<br>Financial Officer | |
| b) | Initial notification /Amendment | Initial<br>notification | |
| 3 | Details of the issuer, emission allowance market participant,<br>auction platform, auctioneer or auction monitor | ||
| a) | Name | National<br>Grid plc | |
| b) | LEI | 8R95QZMKZLJX5Q2XR704 | |
| 4 | Details of the transaction(s): section to be repeated for (i) each<br>type of instrument; (ii) each type of transaction; (iii) each date;<br>and (iv) each place where transactions have been<br>conducted | ||
| a) | Description of the financial instrument, type of<br>instrument<br><br><br><br><br><br>Identification code | Ordinary shares of 12 204/473p each<br><br><br><br><br><br>GB00BDR05C01 | |
| b) | Nature of the transaction | Under the National Grid plc Annual Performance Plan ('APP')<br>Ordinary shares were purchased in the market, which<br>relates to 33% of the APP for 2025/26 being paid in<br>shares. | |
| c) | Price(s) and volume(s) | Price(s) | Volume(s) |
| GBP<br>12.0285 | 16,602 | ||
| d) | Aggregated information<br><br><br><br><br><br>- Aggregated volume<br><br><br><br><br><br>- Price | ||
| e) | Date of the transaction | 2026.06.15 | |
| f) | Place of the transaction | London<br>Stock Exchange (XLON) | |
| 1 | Details of the person discharging managerial responsibilities /<br>person closely associated | ||
| --- | --- | --- | --- |
| a) | Name | Zoë<br>Yujnovich | |
| 2 | Reason for the notification | ||
| a) | Position/status | Chief<br>Executive | |
| b) | Initial notification /Amendment | Initial<br>notification | |
| 3 | Details of the issuer, emission allowance market participant,<br>auction platform, auctioneer or auction monitor | ||
| a) | Name | National<br>Grid plc | |
| b) | LEI | 8R95QZMKZLJX5Q2XR704 | |
| 4 | Details of the transaction(s): section to be repeated for (i) each<br>type of instrument; (ii) each type of transaction; (iii) each date;<br>and (iv) each place where transactions have been<br>conducted | ||
| a) | Description of the financial instrument, type of<br>instrument<br><br><br><br><br><br>Identification code | Ordinary shares of 12 204/473p each<br><br><br><br><br><br>GB00BDR05C01 | |
| b) | Nature of the transaction | Under the National Grid plc Annual Performance Plan ('APP')<br>Ordinary shares were purchased in the market, which<br>relates to 50% of the APP for 2025/26 being paid in<br>shares. | |
| c) | Price(s) and volume(s) | Price(s) | Volume(s) |
| GBP<br>12.0285 | 24,797 | ||
| d) | Aggregated information<br><br><br><br><br><br>- Aggregated volume<br><br><br><br><br><br>- Price | ||
| e) | Date of the transaction | 2026.06.15 | |
| f) | Place of the transaction | London<br>Stock Exchange (XLON) |
Exhibit 99.6
19 June 2026
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') and relates to the following PDMRs being granted awards under the Company's Long Term Performance Plan ('LTPP') on 17 June 2026.
Each of the LTPP Awards will vest on or after 18 June 2029 and are conditional on continued employment and on the satisfaction of the performance conditions approved by the People & Remuneration Committee.
In addition, as disclosed in the Company's 2025/26 Annual Report and Accounts, Executive Directors are required to retain the after-tax value of any shares under the LTPP award until the shareholding requirement is met, and in any event for two years after receipt. The LTPP award is subject to clawback and malus provisions. For further details of the LTPP, please see the Company's 2025/26 Annual Report and Accounts.
In accordance with MAR, the relevant Financial Conduct Authority notifications are set out below.
| 1 | Details of the person discharging managerial responsibilities /<br>person closely associated | ||
|---|---|---|---|
| a) | Name | Andy<br>Agg | |
| 2 | Reason for the notification | ||
| a) | Position/status | Chief<br>Financial Officer | |
| b) | Initial notification /Amendment | Initial<br>notification | |
| 3 | Details of the issuer, emission allowance market participant,<br>auction platform, auctioneer or auction monitor | ||
| a) | Name | National<br>Grid plc | |
| b) | LEI | 8R95QZMKZLJX5Q2XR704 | |
| 4 | Details of the transaction(s): section to be repeated for (i) each<br>type of instrument; (ii) each type of transaction; (iii) each date;<br>and (iv) each place where transactions have been<br>conducted | ||
| a) | Description of the financial instrument, type of<br>instrument<br><br><br><br><br><br>Identification code | Ordinary shares of 12 204/473p each<br><br><br><br><br><br>GB00BDR05C01 | |
| b) | Nature of the transaction | Acquisition of a conditional award over securities, for nil<br>consideration, under the Long Term Performance Plan. | |
| c) | Price(s) and volume(s) | Price(s) | Volume(s) |
| Nil | 246,057 | ||
| d) | Aggregated information<br><br><br><br><br><br>- Aggregated volume<br><br><br><br><br><br>- Price | ||
| e) | Date of the transaction | 2026.06.17 | |
| f) | Place of the transaction | Outside<br>of a Trading Venue | |
| 1 | Details of the person discharging managerial responsibilities /<br>person closely associated | ||
| --- | --- | --- | --- |
| a) | Name | Zoë<br>Yujnovich | |
| 2 | Reason for the notification | ||
| a) | Position/status | Chief<br>Executive | |
| b) | Initial notification /Amendment | Initial<br>notification | |
| 3 | Details of the issuer, emission allowance market participant,<br>auction platform, auctioneer or auction monitor | ||
| a) | Name | National<br>Grid plc | |
| b) | LEI | 8R95QZMKZLJX5Q2XR704 | |
| 4 | Details of the transaction(s): section to be repeated for (i) each<br>type of instrument; (ii) each type of transaction; (iii) each date;<br>and (iv) each place where transactions have been<br>conducted | ||
| a) | Description of the financial instrument, type of<br>instrument<br><br><br><br><br><br>Identification code | Ordinary shares of 12 204/473p each<br><br><br><br><br><br>GB00BDR05C01 | |
| b) | Nature of the transaction | Acquisition of a conditional award over securities, for nil<br>consideration, under the Long Term Performance Plan. | |
| c) | Price(s) and volume(s) | Price(s) | Volume(s) |
| Nil | 450,132 | ||
| d) | Aggregated information<br><br><br><br><br><br>- Aggregated volume<br><br><br><br><br><br>- Price | ||
| e) | Date of the transaction | 2026.06.17 | |
| f) | Place of the transaction | Outside<br>of a Trading Venue |
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.
| NATIONAL GRID<br>plc | ||
|---|---|---|
| By: | Beth Melges | |
| Beth Melges<br><br><br>Head of Plc Governance |
Date: 30 June 2026