NGG SEC filings (2026)
CIK 1004315 · Natural Gas Transmission (SIC 4922) · fiscal year ends in March
1,109 filings on EDGAR since 2000 · 27 annual, 0 quarterly, 786 current · financial statements
What happened, last 12 months#
Every earnings release with its print, every report with its quarter, the other 8-Ks by the headline of the press release they furnish or by their items, the proxy statements, and each day an insider bought or sold — newest first, each line opening the filing on EDGAR. The index by form and year follows.
October 2026
- Oct 58-K8-K · Report of a foreign private issuer
September 2026
- Sep 308-K8-K · Report of a foreign private issuer
August 2026
- Aug 288-K8-K · Report of a foreign private issuer
- Aug 38-K8-K · Report of a foreign private issuer
July 2026
- Jul 318-K8-K · Report of a foreign private issuer
- Jul 238-K8-K · Report of a foreign private issuer
- Jul 228-K8-K · Report of a foreign private issuer
- Jul 148-K8-K · Report of a foreign private issuer
- Jul 18-K8-K · Report of a foreign private issuer
June 2026
- Jun 308-K8-K · Report of a foreign private issuer
- Jun 98-K8-K · Report of a foreign private issuer
- Jun 48-K8-K · Report of a foreign private issuer
- Jun 3ReportAnnual report (foreign private issuer), FY2026 — revenue $23.71B (+1% y/y), net income $4.35B, EPS $4.37
- Jun 38-K8-K · Report of a foreign private issuer
- Jun 38-K8-K · Report of a foreign private issuer
May 2026
- May 298-K8-K · Report of a foreign private issuer
- May 148-K8-K · Report of a foreign private issuer
April 2026
- Apr 308-K8-K · Report of a foreign private issuer
- Apr 138-K8-K · Report of a foreign private issuer
March 2026
- Mar 318-K8-K · Report of a foreign private issuer
- Mar 28-K8-K · Report of a foreign private issuer
February 2026
- Feb 278-K8-K · Report of a foreign private issuer
January 2026
- Jan 308-K8-K · Report of a foreign private issuer
- Jan 238-K8-K · Report of a foreign private issuer
- Jan 148-K8-K · Report of a foreign private issuer
- Jan 128-K8-K · Report of a foreign private issuer
- Jan 128-K8-K · Report of a foreign private issuer
December 2025
- Dec 318-K8-K · Report of a foreign private issuer
- Dec 118-K8-K · Report of a foreign private issuer
- Dec 48-K8-K · Report of a foreign private issuer
November 2025
- Nov 288-K8-K · Report of a foreign private issuer
- Nov 288-K8-K · Report of a foreign private issuer
- Nov 288-K8-K · Report of a foreign private issuer
- Nov 258-K8-K · Report of a foreign private issuer
- Nov 178-K8-K · Report of a foreign private issuer
- Nov 68-K8-K · Report of a foreign private issuer
- Nov 68-K8-K · Report of a foreign private issuer
October 2025
- Oct 318-K8-K · Report of a foreign private issuer
Insider transactions#
What officers, directors and 10% holders reported on Forms 4 and 5 over the last 13 months, from the documents themselves: one insider’s trades of one kind on one day are one row, with the shares, the price range and the total as filed. Open-market buys and sells first; awards, exercises, tax withholding, gifts and employee-plan purchases are grouped below them.
No Form 4 transaction on file for NGG in the window. Transaction details are read from the documents filed since January 2026; the filings themselves are counted below.
Reports and proxy statements#
Annual reports (10-K, 20-F, 40-F), quarterly reports (10-Q), current reports (8-K, 6-K) and proxy statements, newest first. An 8-K that furnishes a press release is headed by the release’s headline, its items beneath; any other 8-K is described by its items. A form opens the press release where there is one, else the document on EDGAR, or the filing’s index where it furnishes other exhibits.
2026 · 27 filings
| Filed | What it is |
|---|---|
| Oct 5, 20266-K | Report of a foreign private issuer |
| Sep 30, 20266-K | Report of a foreign private issuer |
| Aug 28, 20266-K | Report of a foreign private issuer |
| Aug 3, 20266-K | Report of a foreign private issuer |
| Jul 31, 20266-K | Report of a foreign private issuer |
| Jul 23, 20266-K | Report of a foreign private issuer |
| Jul 22, 20266-K | Report of a foreign private issuer |
| Jul 14, 20266-K | Report of a foreign private issuer |
| Jul 1, 20266-K | Report of a foreign private issuer |
| Jun 30, 20266-K | Report of a foreign private issuer |
| Jun 9, 20266-K | Report of a foreign private issuer |
| Jun 4, 20266-K | Report of a foreign private issuer |
| Jun 3, 20266-K | Report of a foreign private issuer |
| Jun 3, 20266-K | Report of a foreign private issuer |
| Jun 3, 202620-F | Annual report (foreign private issuer), FY2026 — revenue $23.71B (+1% y/y), net income $4.35B, EPS $4.37 |
| May 29, 20266-K | Report of a foreign private issuer |
| May 14, 20266-K | Report of a foreign private issuer |
| Apr 30, 20266-K | Report of a foreign private issuer |
| Apr 13, 20266-K | Report of a foreign private issuer |
| Mar 31, 20266-K | Report of a foreign private issuer |
| Mar 2, 20266-K | Report of a foreign private issuer |
| Feb 27, 20266-K | Report of a foreign private issuer |
| Jan 30, 20266-K | Report of a foreign private issuer |
| Jan 23, 20266-K | Report of a foreign private issuer |
| Jan 14, 20266-K | Report of a foreign private issuer |
| Jan 12, 20266-K | Report of a foreign private issuer |
| Jan 12, 20266-K | Report of a foreign private issuer |
2025 · 47 filings
| Filed | What it is |
|---|---|
| Dec 31, 20256-K | Report of a foreign private issuer |
| Dec 11, 20256-K | Report of a foreign private issuer |
| Dec 4, 20256-K | Report of a foreign private issuer |
| Nov 28, 20256-K | Report of a foreign private issuer |
| Nov 28, 20256-K | Report of a foreign private issuer |
| Nov 28, 20256-K | Report of a foreign private issuer |
| Nov 25, 20256-K | Report of a foreign private issuer |
| Nov 17, 20256-K | Report of a foreign private issuer |
| Nov 6, 20256-K | Report of a foreign private issuer |
| Nov 6, 20256-K | Report of a foreign private issuer |
| Oct 31, 20256-K | Report of a foreign private issuer |
| Oct 2, 20256-K | Report of a foreign private issuer |
| Sep 30, 20256-K | Report of a foreign private issuer |
| Sep 24, 20256-K | Report of a foreign private issuer |
| Aug 29, 20256-K | Report of a foreign private issuer |
| Aug 27, 20256-K | Report of a foreign private issuer |
| Aug 14, 20256-K | Report of a foreign private issuer |
| Jul 31, 20256-K | Report of a foreign private issuer |
| Jul 17, 20256-K | Report of a foreign private issuer |
| Jul 16, 20256-K | Report of a foreign private issuer |
| Jul 9, 20256-K | Report of a foreign private issuer |
| Jul 1, 20256-K | Report of a foreign private issuer |
| Jun 30, 20256-K | Report of a foreign private issuer |
| Jun 5, 20256-K | Report of a foreign private issuer |
| Jun 4, 20256-K | Report of a foreign private issuer |
| Jun 2, 20256-K | Report of a foreign private issuer |
| May 30, 20256-K | Report of a foreign private issuer |
| May 30, 20256-K | Report of a foreign private issuer |
| May 29, 20256-K | Report of a foreign private issuer |
| May 29, 20256-K | Report of a foreign private issuer |
| May 29, 202520-F | Annual report (foreign private issuer), FY2025 — revenue $23.44B (−6% y/y), net income $3.71B, EPS $3.92 |
| May 29, 20256-K | Report of a foreign private issuer |
| May 28, 20256-K | Report of a foreign private issuer |
| May 22, 20256-K | Report of a foreign private issuer |
| May 15, 20256-K | Report of a foreign private issuer |
| May 15, 20256-K | Report of a foreign private issuer |
| May 1, 20256-K | Report of a foreign private issuer |
| Apr 30, 20256-K | Report of a foreign private issuer |
| Apr 28, 20256-K | Report of a foreign private issuer |
| Apr 10, 20256-K | Report of a foreign private issuer |
| Mar 31, 20256-K | Report of a foreign private issuer |
| Mar 26, 20256-K | Report of a foreign private issuer |
| Feb 28, 20256-K | Report of a foreign private issuer |
| Feb 24, 20256-K | Report of a foreign private issuer |
| Jan 31, 20256-K | Report of a foreign private issuer |
| Jan 14, 20256-K | Report of a foreign private issuer |
| Jan 13, 20256-K | Report of a foreign private issuer |
2024 · 49 filings
| Filed | What it is |
|---|---|
| Dec 31, 20246-K | Report of a foreign private issuer |
| Dec 18, 20246-K | Report of a foreign private issuer |
| Nov 29, 20246-K | Report of a foreign private issuer |
| Nov 29, 20246-K | Report of a foreign private issuer |
| Nov 29, 20246-K | Report of a foreign private issuer |
| Nov 26, 20246-K | Report of a foreign private issuer |
| Nov 25, 20246-K | Report of a foreign private issuer |
| Nov 18, 20246-K | Report of a foreign private issuer |
| Nov 7, 20246-K | Report of a foreign private issuer |
| Nov 7, 20246-K | Report of a foreign private issuer |
| Oct 31, 20246-K | Report of a foreign private issuer |
| Oct 3, 20246-K | Report of a foreign private issuer |
| Oct 2, 20246-K | Report of a foreign private issuer |
| Sep 30, 20246-K | Report of a foreign private issuer |
| Sep 26, 20246-K | Report of a foreign private issuer |
| Sep 13, 20246-K | Report of a foreign private issuer |
| Aug 30, 20246-K | Report of a foreign private issuer |
| Jul 31, 20246-K | Report of a foreign private issuer |
| Jul 26, 20246-K | Report of a foreign private issuer |
| Jul 19, 20246-K | Report of a foreign private issuer |
| Jul 18, 20246-K | Report of a foreign private issuer |
| Jul 18, 20246-K | Report of a foreign private issuer |
| Jul 10, 20246-K | Report of a foreign private issuer |
| Jun 28, 20246-K | Report of a foreign private issuer |
| Jun 28, 20246-K | Report of a foreign private issuer |
| Jun 13, 20246-K | Report of a foreign private issuer |
| Jun 12, 20246-K | Report of a foreign private issuer |
| Jun 12, 20246-K | Report of a foreign private issuer |
| Jun 11, 20246-K | Report of a foreign private issuer |
| Jun 5, 20246-K | Report of a foreign private issuer |
| May 31, 20246-K | Report of a foreign private issuer |
| May 31, 20246-K | Report of a foreign private issuer |
| May 23, 20246-K | Report of a foreign private issuer |
| May 23, 202420-F | Annual report (foreign private issuer), FY2024 — revenue $24.94B (−4% y/y), net income $2.88B, EPS $3.59 |
| May 23, 20246-K | Report of a foreign private issuer |
| May 23, 20246-K | Report of a foreign private issuer |
| Apr 30, 20246-K | Report of a foreign private issuer |
| Apr 18, 20246-K | Report of a foreign private issuer |
| Apr 10, 20246-K | Report of a foreign private issuer |
| Mar 28, 20246-K | Report of a foreign private issuer |
| Mar 11, 20246-K | Report of a foreign private issuer |
| Mar 7, 20246-K | Report of a foreign private issuer |
| Feb 29, 20246-K | Report of a foreign private issuer |
| Feb 8, 20246-K | Report of a foreign private issuer |
| Jan 31, 20246-K | Report of a foreign private issuer |
| Jan 11, 20246-K | Report of a foreign private issuer |
| Jan 11, 20246-K | Report of a foreign private issuer |
| Jan 10, 20246-K | Report of a foreign private issuer |
| Jan 2, 20246-K | Report of a foreign private issuer |
2023 · 30 filings — 29 × 6-K, 1 × 20-F
2022 · 35 filings — 34 × 6-K, 1 × 20-F
2021 · 43 filings — 42 × 6-K, 1 × 20-F
2020 · 40 filings — 39 × 6-K, 1 × 20-F
2019 · 53 filings — 52 × 6-K, 1 × 20-F
2018 · 44 filings — 43 × 6-K, 1 × 20-F
2017 · 42 filings — 40 × 6-K, 1 × 20-F, 1 × 20-F/A
2016 · 35 filings — 34 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2015 · 48 filings — 47 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2014 · 28 filings — 27 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2013 · 25 filings — 24 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2012 · 29 filings — 28 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2011 · 29 filings — 28 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2010 · 25 filings — 24 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2009 · 23 filings — 22 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2008 · 28 filings — 27 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2007 · 25 filings — 24 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2006 · 25 filings — 24 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2005 · 21 filings — 20 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2004 · 18 filings — 17 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2003 · 19 filings — 18 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2002 · 22 filings — 21 × 6-K, 1 × 20-F
Counted, not listed; the year is on EDGAR.
2001 · 2 filings — 1 × 20-F, 1 × 6-K
Counted, not listed; the year is on EDGAR.
2000 · 1 filing — 1 × 6-K
Counted, not listed; the year is on EDGAR.
Insider, ownership and other filings#
Insider ownership (Forms 3, 4, 5 and 144), beneficial ownership (Schedules 13D and 13G), registration and prospectus (S-1, S-3, S-8, 424B and related) and the rest, counted by year, with the newest 25 of each of the latest 3 years shown. A Form 4 is one insider’s transaction report; a 13G is a passive holder above five percent.
2026 · 7 filings — 2 × 424B5, 1 × 11-K, 1 × 8-A12B and 3 other forms
2025 · 3 filings — 2 × SCHEDULE 13G/A, 1 × 11-K
| Filed | What it is |
|---|---|
| Jun 13, 202511-K | Employee plan annual report |
| Apr 23, 2025SCHEDULE 13G/A | Other filings |
| Feb 5, 2025SCHEDULE 13G/A | Other filings |
2024 · 10 filings — 2 × 424B5, 1 × 11-K, 1 × 11-K/A and 6 other forms
| Filed | What it is |
|---|---|
| Aug 28, 2024F-3ASR | Registration and prospectus |
| Jun 26, 202411-K/A | Employee plan annual report, amended |
| Jun 25, 202411-K | Employee plan annual report |
| Jan 25, 2024SC 13G/A | Passive holder above 5% (Schedule 13G), amended |
| Jan 17, 2024CERT | NYSE CERTIFICATION |
| Jan 17, 20248-A12B | Exchange listing registration |
| Jan 9, 2024424B5 | Prospectus supplement |
| Jan 8, 2024FWP | Free writing prospectus |
| Jan 8, 2024424B5 | Prospectus supplement |
| Jan 3, 202415-12G | Other filings |
2023 · 10 filings — 2 × 424B5, 1 × 11-K, 1 × 25 and 6 other forms
Counted, not listed; the year is on EDGAR.
2022 · 4 filings — 2 × 11-K, 1 × SC 13G, 1 × SC 13G/A
Counted, not listed; the year is on EDGAR.
2021 · 6 filings — 4 × 11-K, 1 × F-3ASR, 1 × SC 13G/A
Counted, not listed; the year is on EDGAR.
2020 · 3 filings — 2 × 11-K, 1 × SC 13G/A
Counted, not listed; the year is on EDGAR.
2019 · 3 filings — 2 × 11-K, 1 × SC 13G/A
Counted, not listed; the year is on EDGAR.
2018 · 7 filings — 2 × 11-K, 2 × SC 13G/A, 1 × 4 and 2 other forms
Counted, not listed; the year is on EDGAR.
2017 · 10 filings — 3 × CORRESP, 3 × UPLOAD, 2 × 11-K and 2 other forms
Counted, not listed; the year is on EDGAR.
2016 · 6 filings — 2 × 11-K, 2 × UPLOAD, 1 × CORRESP and 1 other form
Counted, not listed; the year is on EDGAR.
2015 · 11 filings — 2 × 11-K, 2 × SC 13G/A, 2 × UPLOAD and 5 other forms
Counted, not listed; the year is on EDGAR.
2014 · 8 filings — 2 × 11-K, 2 × SC 13G/A, 2 × UPLOAD and 2 other forms
Counted, not listed; the year is on EDGAR.
2013 · 5 filings — 2 × 11-K, 2 × SC 13G/A, 1 × F-6 POS
Counted, not listed; the year is on EDGAR.
2012 · 9 filings — 2 × 11-K, 2 × UPLOAD, 1 × CORRESP and 4 other forms
Counted, not listed; the year is on EDGAR.
2011 · 5 filings — 2 × 11-K, 1 × F-6EF, 1 × S-8 and 1 other form
Counted, not listed; the year is on EDGAR.
2010 · 9 filings — 3 × CORRESP, 3 × UPLOAD, 2 × 11-K and 1 other form
Counted, not listed; the year is on EDGAR.
2009 · 3 filings — 2 × 11-K, 1 × F-3ASR
Counted, not listed; the year is on EDGAR.
2008 · 4 filings — 2 × 11-K, 2 × S-8
Counted, not listed; the year is on EDGAR.
2007 · 6 filings — 2 × 11-K, 2 × UPLOAD, 1 × CORRESP and 1 other form
Counted, not listed; the year is on EDGAR.
2006 · 13 filings — 2 × 11-K, 2 × 424B2, 2 × UPLOAD and 7 other forms
Counted, not listed; the year is on EDGAR.
2005 · 34 filings — 6 × SC TO-I/A, 4 × SC TO-C, 3 × 35-CERT and 14 other forms
Counted, not listed; the year is on EDGAR.
2004 · 13 filings — 3 × 35-CERT, 3 × U-1/A, 2 × 11-K and 5 other forms
Counted, not listed; the year is on EDGAR.
2003 · 22 filings — 5 × SE, 4 × 11-K, 4 × 35-CERT and 6 other forms
Counted, not listed; the year is on EDGAR.
2002 · 43 filings — 10 × 35-CERT, 8 × U-1/A, 5 × SE and 12 other forms
Counted, not listed; the year is on EDGAR.
2001 · 22 filings — 7 × U-1/A, 4 × 35-CERT, 4 × U-1 and 5 other forms
Counted, not listed; the year is on EDGAR.
2000 · 20 filings — 6 × 425, 3 × 35-CERT, 3 × U-1/A and 7 other forms
Counted, not listed; the year is on EDGAR.
About this data#
National Grid Transco PLC National Grid PLC (NEW) American Depositary Shares (NGG) has 1,109 filings on EDGAR going back to 2000: 27 annual reports, 0 quarterly reports and 786 current reports, plus proxy statements, insider forms and ownership schedules. Its latest annual report, a 20-F, was filed on Jun 3, 2026 for the fiscal year ended Mar 31, 2026. The most recent 8-K, on Oct 5, 2026, covered a material event. Not investment advice.
Every row is a filing EDGAR lists for the registrants that have been National Grid Transco PLC National Grid PLC (NEW) American Depositary Shares, read from the SEC’s submissions index each morning; a filing accepted after that read appears the next day. Where a company changed its filing entity (a holding-company reorganisation, Google into Alphabet) the predecessor’s filings are shown for the years it filed as the company, derived from the filings themselves. Dates are the filing date; the period is the report’s own. The latest 3 years of reports are listed in full, the next years to 10 without their 8-Ks, and older years are counted; the other forms are counted too, with the newest 25 of each of the latest 3 years shown. Insider transactions are the Form 4 and Form 5 documents themselves, filed since January 2026, every number as the insider filed it: a day’s lots are summed, a blank price adds its shares and no dollars, and a purchase through an employee stock plan is a plan purchase, not insider buying. An 8-K’s headline is the first line of the press release it furnishes (Exhibit 99), read from the filing and shown word for word; where two independent readings of the exhibit do not agree, the 8-K is described by its items instead. The documents stay on sec.gov, public domain, and every link opens the SEC’s copy. ChartRow does not summarise or interpret filings.
FAQ#
- Where can I read NGG's latest 10-K?
- NGG's latest annual report, a 20-F, was filed on Jun 3, 2026 for the fiscal year ended Mar 31, 2026. It is linked above and opens on EDGAR, the SEC's own site, where every exhibit is also listed.
- When did NGG last file an 8-K?
- On Oct 5, 2026 it filed a current report. An 8-K reports a material event between quarterly reports; the one that furnishes the quarter's results is filed under Item 2.02.
- How many SEC filings has NGG made?
- 1,109 filings are on EDGAR under the registrant records that have been National Grid Transco PLC National Grid PLC (NEW) American Depositary Shares, going back to 2000; 2 of them are insider ownership forms (Forms 3, 4, 5 and 144).