National Grid PLC SEC filings NMKCP
National Grid PLC has 1,002 filings in SEC EDGAR's recent list, going back to Jan 6, 2003. Its latest annual report, Form 20-F, was filed on Jun 3, 2026 for the period ended Mar 31, 2026. The most recent current report (Form 6-K) was filed on Nov 5, 2026. The company's fiscal year ends on March 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 6-K | Current report (foreign issuer) | Nov 5, 2026 | Nov 5, 2026 |
| 6-K | Current report (foreign issuer) | Nov 5, 2026 | Sep 30, 2026 |
| 6-K | Current report (foreign issuer) | Oct 30, 2026 | Oct 30, 2026 |
| 6-K | Current report (foreign issuer) | Oct 5, 2026 | Oct 5, 2026 |
| 6-K | Current report (foreign issuer) | Sep 30, 2026 | Sep 30, 2026 |
| 6-K | Current report (foreign issuer) | Aug 28, 2026 | Aug 28, 2026 |
| 6-K | Current report (foreign issuer) | Aug 3, 2026 | Aug 3, 2026 |
| 6-K | Current report (foreign issuer) | Jul 31, 2026 | Jul 31, 2026 |
| 6-K | Current report (foreign issuer) | Jul 23, 2026 | Jul 23, 2026 |
| 6-K | Current report (foreign issuer) | Jul 22, 2026 | Jul 22, 2026 |
| 6-K | Current report (foreign issuer) | Jul 14, 2026 | Jul 14, 2026 |
| 6-K | Current report (foreign issuer) | Jul 1, 2026 | Jul 1, 2026 |
| 6-K | Current report (foreign issuer) | Jun 30, 2026 | Jun 30, 2026 |
| 11-K | Employee savings plan report | Jun 16, 2026 | Dec 31, 2025 |
| CERT | Nyse certification | Jun 12, 2026 | — |
| 8-A12B | Filing | Jun 12, 2026 | — |
| 6-K | Current report (foreign issuer) | Jun 9, 2026 | Jun 9, 2026 |
| 424B5 | Prospectus supplement | Jun 5, 2026 | — |
| FWP | Free writing prospectus | Jun 4, 2026 | — |
| 6-K | Current report (foreign issuer) | Jun 4, 2026 | Jun 4, 2026 |
| 424B5 | Prospectus supplement | Jun 4, 2026 | — |
| 6-K | Current report (foreign issuer) | Jun 3, 2026 | Jun 3, 2026 |
| 6-K | Current report (foreign issuer) | Jun 3, 2026 | Jun 3, 2026 |
| 20-F | Annual report (foreign issuer) | Jun 3, 2026 | Mar 31, 2026 |
| 6-K | Current report (foreign issuer) | May 29, 2026 | May 29, 2026 |
| 6-K | Current report (foreign issuer) | May 14, 2026 | May 14, 2026 |
| 6-K | Current report (foreign issuer) | Apr 30, 2026 | Apr 30, 2026 |
| 6-K | Current report (foreign issuer) | Apr 13, 2026 | Apr 13, 2026 |
| 6-K | Current report (foreign issuer) | Mar 31, 2026 | Mar 31, 2026 |
| 6-K | Current report (foreign issuer) | Mar 2, 2026 | Mar 2, 2026 |
| S-8 | Employee stock plan registration | Feb 27, 2026 | — |
| 6-K | Current report (foreign issuer) | Feb 27, 2026 | Feb 27, 2026 |
| 6-K | Current report (foreign issuer) | Jan 30, 2026 | Jan 30, 2026 |
| 6-K | Current report (foreign issuer) | Jan 23, 2026 | Jan 23, 2026 |
| 6-K | Current report (foreign issuer) | Jan 14, 2026 | Jan 14, 2026 |
| 6-K | Current report (foreign issuer) | Jan 12, 2026 | Jan 12, 2026 |
| 6-K | Current report (foreign issuer) | Jan 12, 2026 | Jan 12, 2026 |
| 6-K | Current report (foreign issuer) | Dec 31, 2025 | Dec 31, 2025 |
| 6-K | Current report (foreign issuer) | Dec 11, 2025 | Dec 11, 2025 |
| 6-K | Current report (foreign issuer) | Dec 4, 2025 | Dec 4, 2025 |
| 6-K | Current report (foreign issuer) | Nov 28, 2025 | Nov 28, 2025 |
| 6-K | Current report (foreign issuer) | Nov 28, 2025 | Nov 28, 2025 |
| 6-K | Current report (foreign issuer) | Nov 28, 2025 | Nov 28, 2025 |
| 6-K | Current report (foreign issuer) | Nov 25, 2025 | Nov 25, 2025 |
| 6-K | Current report (foreign issuer) | Nov 17, 2025 | Nov 17, 2025 |
| 6-K | Current report (foreign issuer) | Nov 6, 2025 | Nov 6, 2025 |
| 6-K | Current report (foreign issuer) | Nov 6, 2025 | Sep 30, 2025 |
| 6-K | Current report (foreign issuer) | Oct 31, 2025 | Oct 31, 2025 |
| 6-K | Current report (foreign issuer) | Oct 2, 2025 | Oct 2, 2025 |
| 6-K | Current report (foreign issuer) | Sep 30, 2025 | Sep 30, 2025 |
| 6-K | Current report (foreign issuer) | Sep 24, 2025 | Sep 24, 2025 |
| 6-K | Current report (foreign issuer) | Aug 29, 2025 | Aug 29, 2025 |
| 6-K | Current report (foreign issuer) | Aug 27, 2025 | Aug 27, 2025 |
| 6-K | Current report (foreign issuer) | Aug 14, 2025 | Aug 14, 2025 |
| 6-K | Current report (foreign issuer) | Jul 31, 2025 | Jul 31, 2025 |
| 6-K | Current report (foreign issuer) | Jul 17, 2025 | Jul 17, 2025 |
| 6-K | Current report (foreign issuer) | Jul 16, 2025 | Jul 16, 2025 |
| 6-K | Current report (foreign issuer) | Jul 9, 2025 | Jul 9, 2025 |
| 6-K | Current report (foreign issuer) | Jul 1, 2025 | Jul 1, 2025 |
| 6-K | Current report (foreign issuer) | Jun 30, 2025 | Jun 30, 2025 |
| 11-K | Employee savings plan report | Jun 13, 2025 | Dec 31, 2024 |
| 6-K | Current report (foreign issuer) | Jun 5, 2025 | Jun 5, 2025 |
| 6-K | Current report (foreign issuer) | Jun 4, 2025 | Jun 4, 2025 |
| 6-K | Current report (foreign issuer) | Jun 2, 2025 | Jun 2, 2025 |
| 6-K | Current report (foreign issuer) | May 30, 2025 | May 30, 2025 |
| 6-K | Current report (foreign issuer) | May 30, 2025 | May 30, 2025 |
| 6-K | Current report (foreign issuer) | May 29, 2025 | May 29, 2025 |
| 6-K | Current report (foreign issuer) | May 29, 2025 | May 29, 2025 |
| 20-F | Annual report (foreign issuer) | May 29, 2025 | Mar 31, 2025 |
| 6-K | Current report (foreign issuer) | May 29, 2025 | May 29, 2025 |
| 6-K | Current report (foreign issuer) | May 28, 2025 | May 27, 2025 |
| 6-K | Current report (foreign issuer) | May 22, 2025 | May 22, 2025 |
| 6-K | Current report (foreign issuer) | May 15, 2025 | May 15, 2025 |
| 6-K | Current report (foreign issuer) | May 15, 2025 | May 15, 2025 |
| 6-K | Current report (foreign issuer) | May 1, 2025 | May 1, 2025 |
| 6-K | Current report (foreign issuer) | Apr 30, 2025 | Apr 30, 2025 |
| 6-K | Current report (foreign issuer) | Apr 28, 2025 | Apr 28, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 23, 2025 | — |
| 6-K | Current report (foreign issuer) | Apr 10, 2025 | Apr 10, 2025 |
| 6-K | Current report (foreign issuer) | Mar 31, 2025 | Mar 31, 2025 |
| 6-K | Current report (foreign issuer) | Mar 26, 2025 | Mar 26, 2025 |
| 6-K | Current report (foreign issuer) | Feb 28, 2025 | Feb 28, 2025 |
| 6-K | Current report (foreign issuer) | Feb 24, 2025 | Feb 24, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2025 | — |
| 6-K | Current report (foreign issuer) | Jan 31, 2025 | Jan 31, 2025 |
| 6-K | Current report (foreign issuer) | Jan 14, 2025 | Jan 14, 2025 |
| 6-K | Current report (foreign issuer) | Jan 13, 2025 | Jan 13, 2025 |
| 6-K | Current report (foreign issuer) | Dec 31, 2024 | Dec 31, 2024 |
| 6-K | Current report (foreign issuer) | Dec 18, 2024 | Dec 18, 2024 |
| 6-K | Current report (foreign issuer) | Nov 29, 2024 | Nov 29, 2024 |
| 6-K | Current report (foreign issuer) | Nov 29, 2024 | Nov 29, 2024 |
| 6-K | Current report (foreign issuer) | Nov 29, 2024 | Nov 29, 2024 |
| 6-K | Current report (foreign issuer) | Nov 26, 2024 | Nov 26, 2024 |
| 6-K | Current report (foreign issuer) | Nov 25, 2024 | Nov 25, 2024 |
| 6-K | Current report (foreign issuer) | Nov 18, 2024 | Nov 18, 2024 |
| 6-K | Current report (foreign issuer) | Nov 7, 2024 | Nov 7, 2024 |
| 6-K | Current report (foreign issuer) | Nov 7, 2024 | Sep 30, 2024 |
| 6-K | Current report (foreign issuer) | Oct 31, 2024 | Oct 31, 2024 |
| 6-K | Current report (foreign issuer) | Oct 3, 2024 | Oct 3, 2024 |
| 6-K | Current report (foreign issuer) | Oct 2, 2024 | Oct 1, 2024 |
| 6-K | Current report (foreign issuer) | Sep 30, 2024 | Sep 30, 2024 |
| 6-K | Current report (foreign issuer) | Sep 26, 2024 | Sep 26, 2024 |
| 6-K | Current report (foreign issuer) | Sep 13, 2024 | Sep 13, 2024 |
| 6-K | Current report (foreign issuer) | Aug 30, 2024 | Aug 30, 2024 |
| F-3ASR | Filing | Aug 28, 2024 | — |
| 6-K | Current report (foreign issuer) | Jul 31, 2024 | Jul 31, 2024 |
| 6-K | Current report (foreign issuer) | Jul 26, 2024 | Jul 26, 2024 |
| 6-K | Current report (foreign issuer) | Jul 19, 2024 | Jul 19, 2024 |
| 6-K | Current report (foreign issuer) | Jul 18, 2024 | Jul 18, 2024 |
| 6-K | Current report (foreign issuer) | Jul 18, 2024 | Jul 18, 2024 |
| 6-K | Current report (foreign issuer) | Jul 10, 2024 | Jul 10, 2024 |
| 6-K | Current report (foreign issuer) | Jun 28, 2024 | Jun 28, 2024 |
| 6-K | Current report (foreign issuer) | Jun 28, 2024 | Jun 28, 2024 |
| 11-K/A | Filing | Jun 26, 2024 | Dec 31, 2023 |
| 11-K | Employee savings plan report | Jun 25, 2024 | Dec 31, 2023 |
| 6-K | Current report (foreign issuer) | Jun 13, 2024 | Jun 13, 2024 |
| 6-K | Current report (foreign issuer) | Jun 12, 2024 | Jun 12, 2024 |
| 6-K | Current report (foreign issuer) | Jun 12, 2024 | Jun 12, 2024 |
| 6-K | Current report (foreign issuer) | Jun 11, 2024 | Jun 11, 2024 |
| 6-K | Current report (foreign issuer) | Jun 5, 2024 | Jun 5, 2024 |
| 6-K | Current report (foreign issuer) | May 31, 2024 | May 31, 2024 |
| 6-K | Current report (foreign issuer) | May 31, 2024 | May 31, 2024 |
| 6-K | Current report (foreign issuer) | May 23, 2024 | May 23, 2024 |
| 20-F | Annual report (foreign issuer) | May 23, 2024 | Mar 31, 2024 |
| 6-K | Current report (foreign issuer) | May 23, 2024 | May 23, 2024 |
| 6-K | Current report (foreign issuer) | May 23, 2024 | May 23, 2024 |
| 6-K | Current report (foreign issuer) | Apr 30, 2024 | Apr 30, 2024 |
| 6-K | Current report (foreign issuer) | Apr 18, 2024 | Apr 18, 2024 |
| 6-K | Current report (foreign issuer) | Apr 10, 2024 | Apr 10, 2024 |
| 6-K | Current report (foreign issuer) | Mar 28, 2024 | Mar 28, 2024 |
| 6-K | Current report (foreign issuer) | Mar 11, 2024 | Mar 11, 2024 |
| 6-K | Current report (foreign issuer) | Mar 7, 2024 | Mar 7, 2024 |
| 6-K | Current report (foreign issuer) | Feb 29, 2024 | Feb 29, 2024 |
| 6-K | Current report (foreign issuer) | Feb 8, 2024 | Feb 8, 2024 |
| 6-K | Current report (foreign issuer) | Jan 31, 2024 | Jan 31, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2024 | — |
| CERT | Nyse certification | Jan 17, 2024 | — |
| 8-A12B | Filing | Jan 17, 2024 | — |
| 6-K | Current report (foreign issuer) | Jan 11, 2024 | Jan 11, 2024 |
| 6-K | Current report (foreign issuer) | Jan 11, 2024 | Jan 11, 2024 |
| 6-K | Current report (foreign issuer) | Jan 10, 2024 | Jan 10, 2024 |
| 424B5 | Prospectus supplement | Jan 9, 2024 | — |
| FWP | Free writing prospectus | Jan 8, 2024 | — |
| 424B5 | Prospectus supplement | Jan 8, 2024 | — |
| 15-12G | Deregistration | Jan 3, 2024 | — |
| 6-K | Current report (foreign issuer) | Jan 2, 2024 | Jan 2, 2024 |
| 25 | Filing | Dec 21, 2023 | — |
| 6-K | Current report (foreign issuer) | Dec 13, 2023 | Dec 13, 2023 |
| 6-K | Current report (foreign issuer) | Dec 11, 2023 | Dec 11, 2023 |
| 6-K | Current report (foreign issuer) | Nov 30, 2023 | Nov 30, 2023 |
| 6-K | Current report (foreign issuer) | Nov 30, 2023 | Nov 30, 2023 |
| 6-K | Current report (foreign issuer) | Nov 24, 2023 | Nov 24, 2023 |
| 6-K | Current report (foreign issuer) | Nov 9, 2023 | Nov 9, 2023 |
| 6-K | Current report (foreign issuer) | Nov 9, 2023 | Sep 30, 2023 |
| 6-K | Current report (foreign issuer) | Oct 31, 2023 | Oct 31, 2023 |
| 6-K | Current report (foreign issuer) | Oct 5, 2023 | Oct 5, 2023 |
| 6-K | Current report (foreign issuer) | Sep 29, 2023 | Sep 29, 2023 |
| 6-K | Current report (foreign issuer) | Aug 31, 2023 | Aug 31, 2023 |
| 6-K | Current report (foreign issuer) | Aug 9, 2023 | Aug 9, 2023 |
| 6-K | Current report (foreign issuer) | Aug 8, 2023 | Aug 8, 2023 |
| 6-K | Current report (foreign issuer) | Jul 31, 2023 | Jul 31, 2023 |
| 6-K | Current report (foreign issuer) | Jul 19, 2023 | Jul 19, 2023 |
| 6-K | Current report (foreign issuer) | Jul 10, 2023 | Jul 10, 2023 |
| 6-K | Current report (foreign issuer) | Jul 7, 2023 | Jul 7, 2023 |
| 6-K | Current report (foreign issuer) | Jun 30, 2023 | Jun 30, 2023 |
| 11-K | Employee savings plan report | Jun 23, 2023 | Dec 31, 2022 |
| CERT | Nyse certification | Jun 15, 2023 | — |
| 8-A12B | Filing | Jun 15, 2023 | — |
| 6-K | Current report (foreign issuer) | Jun 12, 2023 | Jun 12, 2023 |
| 424B5 | Prospectus supplement | Jun 8, 2023 | — |
| FWP | Free writing prospectus | Jun 8, 2023 | — |
| 6-K | Current report (foreign issuer) | Jun 6, 2023 | Jun 6, 2023 |
| 424B5 | Prospectus supplement | Jun 6, 2023 | — |
| 20-F | Annual report (foreign issuer) | Jun 6, 2023 | Mar 31, 2023 |
| POSASR | Filing | Jun 5, 2023 | — |
| 6-K | Current report (foreign issuer) | May 31, 2023 | May 31, 2023 |
| 6-K | Current report (foreign issuer) | May 18, 2023 | May 18, 2023 |
| 6-K | Current report (foreign issuer) | Apr 28, 2023 | Apr 28, 2023 |
| 6-K | Current report (foreign issuer) | Apr 3, 2023 | Apr 3, 2023 |
| 6-K | Current report (foreign issuer) | Feb 28, 2023 | Feb 28, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 6-K | Current report (foreign issuer) | Jan 31, 2023 | Jan 31, 2023 |
| 6-K | Current report (foreign issuer) | Jan 31, 2023 | Jan 31, 2023 |
| SC 13G | Ownership over 5% (passive) | Jan 25, 2023 | — |
| 6-K | Current report (foreign issuer) | Jan 11, 2023 | Jan 11, 2023 |
| 6-K | Current report (foreign issuer) | Jan 10, 2023 | Jan 10, 2023 |
| 6-K | Current report (foreign issuer) | Dec 30, 2022 | Dec 30, 2022 |
| 6-K | Current report (foreign issuer) | Dec 15, 2022 | Dec 15, 2022 |
| 6-K | Current report (foreign issuer) | Dec 14, 2022 | Dec 14, 2022 |
| 6-K | Current report (foreign issuer) | Dec 5, 2022 | Dec 5, 2022 |
| 6-K | Current report (foreign issuer) | Dec 1, 2022 | Dec 1, 2022 |
| 6-K | Current report (foreign issuer) | Nov 30, 2022 | Nov 30, 2022 |
| 6-K | Current report (foreign issuer) | Nov 10, 2022 | Sep 30, 2022 |
| 6-K | Current report (foreign issuer) | Nov 10, 2022 | Sep 30, 2022 |
| 6-K | Current report (foreign issuer) | Oct 12, 2022 | Oct 10, 2022 |
| 6-K | Current report (foreign issuer) | Oct 6, 2022 | Oct 6, 2022 |
| 6-K | Current report (foreign issuer) | Sep 6, 2022 | Sep 6, 2022 |
| 6-K | Current report (foreign issuer) | Aug 17, 2022 | Aug 17, 2022 |
| 6-K | Current report (foreign issuer) | Aug 16, 2022 | Aug 16, 2022 |
| 6-K | Current report (foreign issuer) | Aug 5, 2022 | Aug 5, 2022 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Natural Gas Transmission (SIC 4922)
- Listed as
- NGG (NYSE), NGGTF (OTC), NEWEN (OTC), NMKBP (OTC), NMKCP (OTC), NMPWP (OTC)
- Fiscal year ends
- March 31
- Headquarters
- London, United Kingdom
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1004315
- Former names
- NATIONAL GRID TRANSCO PLC (until Jul 28, 2005); NATIONAL GRID GROUP PLC (until Nov 1, 2002)
Other Natural Gas Transmission companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.