A business in context

NSARO research notebook

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

Research JSON

Filing timeline

Download filings CSV

SEC submissions · retrieved 2026-09-25 · 8004 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. 10-Q · Quarterly report

    Report date 2026-06-30 · 0001628280-26-051906

  2. 8-K · Current report

    Report date 2026-07-30 · 0001104659-26-088698 · Items 2.02,7.01,9.01

  3. 8-K · Current report

    Report date 2026-05-13 · 0001104659-26-060236 · Items 2.03,9.01

  4. 10-Q · Quarterly report

    Report date 2026-03-31 · 0001628280-26-032278

  5. 8-K · Current report

    Report date 2026-05-06 · 0001104659-26-056267 · Items 2.02,5.07,7.01,9.01

  6. 8-K · Current report

    Report date 2026-03-19 · 0001104659-26-037912 · Items 7.01,8.01,9.01

  7. 10-K · Annual report

    Report date 2025-12-31 · 0001628280-26-008461

  8. 8-K · Current report

    Report date 2026-02-12 · 0001104659-26-014302 · Items 2.02,7.01,9.01

  9. 8-K · Current report

    Report date 2026-01-27 · 0001104659-26-008649 · Items 5.05,9.01

  10. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001628280-25-050033

  11. 8-K · Current report

    Report date 2025-11-04 · 0001104659-25-106306 · Items 2.02,7.01,9.01

  12. 8-K · Current report

    Report date 2025-10-17 · 0001104659-25-100409 · Items 2.03,9.01

  13. 10-Q · Quarterly report

    Report date 2025-06-30 · 0001628280-25-037369

  14. 8-K · Current report

    Report date 2025-07-31 · 0001104659-25-072711 · Items 2.02,7.01,9.01

  15. 10-Q · Quarterly report

    Report date 2025-03-31 · 0000072741-25-000011

  16. 8-K · Current report

    Report date 2025-05-01 · 0001104659-25-043530 · Items 2.02,5.03,5.07,7.01,9.01

  17. 8-K · Current report

    Report date 2025-02-26 · 0001104659-25-017424 · Items 2.03,9.01

  18. 10-K · Annual report

    Report date 2024-12-31 · 0000072741-25-000007

  19. 8-K · Current report

    Report date 2025-02-11 · 0001104659-25-011521 · Items 2.02,7.01,9.01

  20. 8-K · Current report

    Report date 2024-11-08 · 0001104659-24-115973 · Items 7.01,9.01

  21. 10-Q · Quarterly report

    Report date 2024-09-30 · 0000072741-24-000023

  22. 8-K · Current report

    Report date 2024-11-04 · 0001104659-24-113912 · Items 2.02,7.01,9.01

  23. 10-Q · Quarterly report

    Report date 2024-06-30 · 0000072741-24-000018

  24. 8-K · Current report

    Report date 2024-07-31 · 0001104659-24-084368 · Items 2.02,7.01,9.01

  25. 8-K · Current report

    Report date 2024-05-22 · 0001104659-24-064251 · Items 2.03,9.01

  26. 10-Q · Quarterly report

    Report date 2024-03-31 · 0000072741-24-000010

  27. 8-K · Current report

    Report date 2024-05-01 · 0001104659-24-055831 · Items 2.02,5.07,7.01,8.01,9.01

  28. 8-K · Current report

    Report date 2024-02-13 · 0001104659-24-022557 · Items 2.02,7.01,9.01

  29. 10-K · Annual report

    Report date 2023-12-31 · 0000072741-24-000005

  30. SC 13G/A · Ownership disclosure

    0000898531-24-000066

  31. 10-Q · Quarterly report

    Report date 2023-09-30 · 0000072741-23-000020

  32. 8-K · Current report

    Report date 2023-11-06 · 0001104659-23-114448 · Items 2.02,7.01,9.01

Reported insider transactions

Download transactions CSV

SEC insider transactions · retrieved 2026-09-22 · 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 2026-09-22 · 1612 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 · 0000013372NSTAR ELECTRIC CO

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

No verified LEI join available.

GLEIF legal entity reference data · retrieved 2026-09-22 · 1177 checked identities; 0 unavailable records

Search names and former names
  • BOSTON EDISON CO · former SEC name · 1994-08-12 to 2007-01-05

Revenue in constant purchasing power

USD revenue expressed in 2026-08 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 2026-09-25 · 9 selected series; gaps remain missing

Explore the CPI history ↗