A business in context

QTRHF research notebook

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

Research JSON

Filing timeline

Download filings CSV

SEC submissions · retrieved 2026-10-15 · 8030 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. SC 13G/A · Ownership disclosure

    0001596800-20-000010

  2. 6-K · Current report

    Report date 2019-12-23 · 0001564590-19-046607

  3. 6-K · Current report

    Report date 2019-12-18 · 0001564590-19-046267

  4. 6-K · Current report

    Report date 2019-12-05 · 0001564590-19-045300

  5. 6-K · Current report

    Report date 2019-12-03 · 0001564590-19-045074

  6. 6-K · Current report

    Report date 2019-11-25 · 0001564590-19-044287

  7. 6-K · Current report

    Report date 2019-11-18 · 0001564590-19-043783

  8. 6-K · Current report

    Report date 2019-11-13 · 0001564590-19-043293

  9. 6-K · Current report

    Report date 2019-11-07 · 0001564590-19-041360

  10. 6-K · Current report

    Report date 2019-11-07 · 0001564590-19-041331

  11. 6-K · Current report

    Report date 2019-10-24 · 0001564590-19-037640

  12. 6-K · Current report

    Report date 2019-10-22 · 0001564590-19-037277

  13. 6-K · Current report

    Report date 2019-10-08 · 0001564590-19-036669

  14. 6-K · Current report

    Report date 2019-10-01 · 0001564590-19-035992

  15. 6-K · Current report

    Report date 2019-08-08 · 0001564590-19-030404

  16. 6-K · Current report

    Report date 2019-08-08 · 0001564590-19-030403

  17. 6-K · Current report

    Report date 2019-08-08 · 0001564590-19-030388

  18. 6-K · Current report

    Report date 2019-07-25 · 0001564590-19-025966

  19. 6-K · Current report

    Report date 2019-06-17 · 0001564590-19-022616

  20. 6-K · Current report

    Report date 2019-06-13 · 0001564590-19-022480

  21. 6-K · Current report

    Report date 2019-05-09 · 0001564590-19-017560

  22. 6-K · Current report

    Report date 2019-05-09 · 0001564590-19-017544

  23. 6-K · Current report

    Report date 2019-04-25 · 0001564590-19-012877

  24. 6-K · Current report

    Report date 2019-04-23 · 0001564590-19-012396

  25. 6-K · Current report

    Report date 2019-04-16 · 0001564590-19-011665

  26. 6-K · Current report

    Report date 2019-04-02 · 0001564590-19-010481

  27. 6-K · Current report

    Report date 2019-03-01 · 0001564590-19-005663

  28. 6-K · Current report

    Report date 2019-02-28 · 0001564590-19-005168

  29. 6-K · Current report

    Report date 2019-02-28 · 0001564590-19-005166

  30. 40-F · Annual report

    Report date 2018-12-31 · 0000950123-19-002522

  31. 6-K · Current report

    Report date 2019-02-14 · 0001564590-19-002921

  32. SC 13G · Ownership disclosure

    0001596800-19-000006

Reported insider transactions

Download transactions CSV

SEC insider transactions · retrieved 2026-10-15 · 2026 Q3: 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 2026-10-15 · 1663 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 · 0001518419Quarterhill Inc.

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 2026-10-15 · 1199 checked identities; 0 unavailable records

Search names and former names
  • Wi-LAN Inc. · former SEC name · 2011-04-27 to 2017-05-05

Revenue in constant purchasing power

USD revenue expressed in 2026-09 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.

Year endedReported USD revenueCPI-adjusted USD revenue
2018-12-31$77.40M$103.85M
2017-12-31$134.71M$185.17M

Bureau of Labor Statistics · retrieved 2026-10-15 · 9 selected series; gaps remain missing

Explore the CPI history ↗