A business in context

ADNH research notebook

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

Research JSON

Filing timeline

Download filings CSV

SEC submissions · retrieved 2026-10-20 · 8029 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. 8-K · Current report

    Report date 2026-07-20 · 0001829126-26-007750 · Items 8.01

  2. 8-K · Current report

    Report date 2026-05-14 · 0001829126-26-005363 · Items 8.01

  3. 8-K · Current report

    Report date 2026-01-08 · 0001829126-26-000309 · Items 1.01,3.02,5.02,9.01

  4. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001829126-25-009258

  5. 8-K · Current report

    Report date 2025-11-05 · 0001829126-25-008952 · Items 1.02

  6. 8-K · Current report

    Report date 2025-10-29 · 0001829126-25-008803 · Items 5.02

  7. 8-K · Current report

    Report date 2025-10-29 · 0001829126-25-008497 · Items 3.01

  8. 8-K · Current report

    Report date 2025-10-22 · 0001829126-25-008326 · Items 5.07

  9. DEF 14A · Proxy statement

    Report date 2025-10-22 · 0001829126-25-007733

  10. 8-K · Current report

    Report date 2025-09-11 · 0001829126-25-007376 · Items 1.02

  11. 8-K · Current report

    Report date 2025-08-28 · 0001829126-25-007169 · Items 1.01,3.02,9.01

  12. 8-K · Current report

    Report date 2025-08-18 · 0001829126-25-006667 · Items 3.01

  13. 8-K · Current report

    Report date 2025-08-14 · 0001829126-25-006402 · Items 1.01,3.02,9.01

  14. 10-Q · Quarterly report

    Report date 2025-06-30 · 0001829126-25-006102

  15. 8-K · Current report

    Report date 2025-08-06 · 0001829126-25-006101 · Items 8.01,9.01

  16. 8-K · Current report

    Report date 2025-08-01 · 0001829126-25-005927 · Items 1.01,3.02,8.01,9.01

  17. 8-K · Current report

    Report date 2025-07-01 · 0001829126-25-004892 · Items 1.01,8.01,9.01

  18. 10-Q · Quarterly report

    Report date 2025-03-31 · 0001829126-25-004811

  19. 10-K · Annual report

    Report date 2024-12-31 · 0001829126-25-004289

  20. 8-K · Current report

    Report date 2025-05-22 · 0001829126-25-003930 · Items 3.01

  21. 8-K · Current report

    Report date 2025-04-16 · 0001829126-25-002729 · Items 3.01,7.01,9.01

  22. 8-K · Current report

    Report date 2025-04-15 · 0001829126-25-002674 · Items 8.01

  23. 4 · Ownership change

    Report date 2024-12-31 · 0001829126-25-002320

  24. 8-K · Current report

    Report date 2025-03-11 · 0001829126-25-001681 · Items 8.01,9.01

  25. 8-K · Current report

    Report date 2024-12-31 · 0001829126-25-000009 · Items 5.07

  26. 10-Q · Quarterly report

    Report date 2024-09-30 · 0001829126-24-008577

  27. 8-K/A · Current report

    Report date 2024-10-24 · 0001829126-24-008371 · Items 5.02

  28. DEF 14A · Proxy statement

    Report date 2024-12-31 · 0001829126-24-008194

  29. 8-K · Current report

    Report date 2024-11-27 · 0001829126-24-007869 · Items 3.01

  30. 8-K · Current report

    Report date 2024-11-26 · 0001829126-24-007837 · Items 8.01

  31. 8-K · Current report

    Report date 2024-11-04 · 0001829126-24-007371 · Items 1.02,5.02

  32. 8-K · Current report

    Report date 2024-10-29 · 0001829126-24-007083 · Items 5.02

  33. 8-K · Current report

    Report date 2024-10-24 · 0001829126-24-006964 · Items 5.02

  34. 4 · Ownership change

    Report date 2024-02-15 · 0001829126-24-001030

  35. 4 · Ownership change

    Report date 2023-09-06 · 0001829126-23-006016

  36. 4 · Ownership change

    Report date 2023-09-06 · 0001829126-23-006015

  37. 4/A · Ownership change

    Report date 2023-02-06 · 0001209191-23-026171

  38. 4 · Ownership change

    Report date 2023-01-12 · 0001209191-23-024342

  39. 4/A · Ownership change

    Report date 2021-06-11 · 0001209191-23-024339

  40. 4/A · Ownership change

    Report date 2023-02-06 · 0001209191-23-024337

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 · 0001744494ADVENT TECHNOLOGIES HOLDINGS, 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
  • AMCI Acquisition Corp. · former SEC name · 2018-07-20 to 2021-02-04

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
2024-12-31$3.28M$3.52M
2023-12-31$1.54M$1.70M
2022-12-31$7.84M$9.02M
2021-12-31$7.07M$8.79M
2020-12-31$882.7K$1.15M

Bureau of Labor Statistics · retrieved 2026-10-20 · 9 selected series; gaps remain missing

Explore the CPI history ↗