A business in context

NGG research notebook

Read the disclosures. Follow the relationships. Keep the dates in view.

Research JSON

Filing timeline

Download filings CSV

SEC submissions · retrieved 2026-09-07 · 8010 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. 6-K · Current report

    Report date 2026-08-28 · 0001654954-26-007929

  2. 6-K · Current report

    Report date 2026-08-03 · 0001654954-26-007117

  3. 6-K · Current report

    Report date 2026-07-31 · 0001654954-26-007047

  4. 6-K · Current report

    Report date 2026-07-23 · 0001654954-26-006813

  5. 6-K · Current report

    Report date 2026-07-22 · 0001654954-26-006786

  6. 6-K · Current report

    Report date 2026-07-14 · 0001654954-26-006652

  7. 6-K · Current report

    Report date 2026-07-01 · 0001654954-26-006411

  8. 6-K · Current report

    Report date 2026-06-30 · 0001654954-26-006329

  9. 6-K · Current report

    Report date 2026-06-09 · 0001193125-26-263940

  10. 6-K · Current report

    Report date 2026-06-04 · 0001654954-26-005689

  11. 6-K · Current report

    Report date 2026-06-03 · 0001654954-26-005664

  12. 6-K · Current report

    Report date 2026-06-03 · 0001654954-26-005660

  13. 20-F · Annual report

    Report date 2026-03-31 · 0001004315-26-000006

  14. 6-K · Current report

    Report date 2026-05-29 · 0001654954-26-005509

  15. 6-K · Current report

    Report date 2026-05-14 · 0001654954-26-004849

  16. 6-K · Current report

    Report date 2026-04-30 · 0001654954-26-004091

  17. 6-K · Current report

    Report date 2026-04-13 · 0001654954-26-003430

  18. 6-K · Current report

    Report date 2026-03-31 · 0001654954-26-002997

  19. 6-K · Current report

    Report date 2026-03-02 · 0001654954-26-001708

  20. 6-K · Current report

    Report date 2026-02-27 · 0001654954-26-001618

  21. 6-K · Current report

    Report date 2026-01-30 · 0001654954-26-000733

  22. 6-K · Current report

    Report date 2026-01-23 · 0001654954-26-000549

  23. 6-K · Current report

    Report date 2026-01-14 · 0001654954-26-000334

  24. 6-K · Current report

    Report date 2026-01-12 · 0001654954-26-000245

  25. 6-K · Current report

    Report date 2026-01-12 · 0001654954-26-000244

  26. 6-K · Current report

    Report date 2025-12-31 · 0001654954-25-014422

  27. 6-K · Current report

    Report date 2025-12-11 · 0001654954-25-013868

  28. 6-K · Current report

    Report date 2025-12-04 · 0001654954-25-013665

  29. 6-K · Current report

    Report date 2025-11-28 · 0001654954-25-013506

  30. 6-K · Current report

    Report date 2025-11-28 · 0001654954-25-013492

  31. 6-K · Current report

    Report date 2025-11-28 · 0001654954-25-013483

  32. 6-K · Current report

    Report date 2025-11-25 · 0001654954-25-013438

  33. 4 · Ownership change

    Report date 2018-02-15 · 0001104659-18-010749

Reported insider transactions

Download transactions CSV

SEC insider transactions · retrieved 2026-09-07 · 2026 Q2: filings in this completed quarter; not a live transaction feed

Purchases and sales include open-market or private transactions. Grants, exercises and tax withholding are shown separately. Amendments and joint reports can overlap; rows are not a net-buying score. Prices retain the filing's units; consult its footnotes.

Transaction rows by code · counts, not monetary totals
Purchase: 0 transaction rows0PSale: 0 transaction rows0SGrant / award: 0 transaction rows0AExercise / conversion: 0 transaction rows0MTax / exercise payment: 0 transaction rows0FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

0 matching transaction rows.

No matching transaction rows in the covered quarter. This does not establish that no insider transactions occurred.

Identity & relationships

Wikidata structured data · retrieved 2026-09-07 · 1611 unambiguous CIK-linked entities; coverage is incomplete

These are sourced identity and relationship claims, with incomplete coverage. Headquarters locations do not describe sales, assets or operating exposure.

SEC issuer · 0001004315NATIONAL GRID PLC
National Grid USNational Grid Electricity TransmissionNational Grid Electricity Distribution

Showing 3 of 3 imported Wikidata subsidiary claims. Additional aliases appear below.

No parent relationship is available in this import; this is not proof of independence.

Legal Entity Identifier
8R95QZMKZLJX5Q2XR704
GLEIF legal name
NATIONAL GRID PLC
Entity / LEI registration status
ACTIVE / ISSUED
Reference data updated
2025-10-03T13:22:35Z

direct-parent: no parent LEI supplied

ultimate-parent: no parent LEI supplied

GLEIF legal entity reference data · retrieved 2026-09-07 · 1177 checked identities; 0 unavailable records

Search names and former names

View Wikidata identity and references ↗

  • National Grid · alias · wikidata
  • National Grid US · subsidiary · wikidata
  • National Grid (United States) · subsidiary · wikidata
  • National Grid Electricity Transmission · subsidiary · wikidata
  • NGET · subsidiary · wikidata
  • National Grid ET · subsidiary · wikidata
  • National Grid Electricity Distribution · subsidiary · wikidata
  • National Grid Electricity Distribution Plc. · subsidiary · wikidata
  • NGED · subsidiary · wikidata
  • Western Power Distribution · subsidiary · wikidata
  • WPD · subsidiary · wikidata
  • NATIONAL GRID TRANSCO PLC · former SEC name · 2002-11-26 to 2005-07-28
  • NATIONAL GRID GROUP PLC · former SEC name · 2000-09-14 to 2002-11-01
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Revenue in constant purchasing power

USD revenue expressed in 2026-07 consumer-price dollars. Each annual period uses a CPI-U average weighted by the days in its actual reporting interval. This is a purchasing-power comparison, not a company-specific price or volume measure.

No USD annual revenue periods with complete CPI coverage are available. Non-USD statements are not converted with U.S. CPI.

Bureau of Labor Statistics · retrieved 2026-09-07 · 9 selected series; gaps remain missing

Explore the CPI history ↗