A business in context

BCHT research notebook

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

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Filing timeline

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

  1. 10-Q · Quarterly report

    Report date 2026-06-30 · 0001477932-26-004988

  2. 8-K · Current report

    Report date 2026-07-23 · 0001477932-26-004563 · Items 3.03,5.03,5.07,9.01

  3. DEF 14A · Proxy statement

    Report date 2026-07-23 · 0001477932-26-003963

  4. 10-Q · Quarterly report

    Report date 2026-03-31 · 0001477932-26-003054

  5. 8-K/A · Current report

    Report date 2026-05-01 · 0001477932-26-002995 · Items 5.02,9.01

  6. 8-K · Current report

    Report date 2026-05-01 · 0001477932-26-002802 · Items 5.02,9.01

  7. 8-K · Current report

    Report date 2026-04-10 · 0001477932-26-002165 · Items 5.08,8.01,9.01

  8. 10-K · Annual report

    Report date 2025-12-31 · 0001477932-26-001835

  9. 8-K · Current report

    Report date 2026-03-17 · 0001104659-26-029450 · Items 8.01,9.01

  10. 4 · Ownership change

    Report date 2026-02-27 · 0001358094-26-000001

  11. 8-K · Current report

    Report date 2026-02-25 · 0001104659-26-021534 · Items 1.01,8.01,9.01

  12. 8-K · Current report

    Report date 2025-12-29 · 0001477932-26-000031 · Items 8.01,9.01

  13. 8-K · Current report

    Report date 2025-12-23 · 0001477932-25-009214 · Items 3.03,5.03,9.01

  14. 4 · Ownership change

    Report date 2025-12-12 · 0001358094-25-000008

  15. 4 · Ownership change

    Report date 2025-12-12 · 0001358094-25-000007

  16. 4 · Ownership change

    Report date 2025-12-11 · 0001358094-25-000006

  17. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001477932-25-008185

  18. 10-Q · Quarterly report

    Report date 2025-06-30 · 0001477932-25-005905

  19. 4 · Ownership change

    Report date 2025-06-20 · 0000945836-25-000004

  20. 4 · Ownership change

    Report date 2025-06-20 · 0000945836-25-000003

  21. 8-K · Current report

    Report date 2025-06-13 · 0001477932-25-004727 · Items 5.02,9.01

  22. 10-Q · Quarterly report

    Report date 2025-03-31 · 0001477932-25-003808

  23. 10-K · Annual report

    Report date 2024-12-31 · 0001477932-25-002237

  24. 8-K · Current report

    Report date 2025-03-28 · 0001477932-25-002233 · Items 4.02,9.01

  25. 8-K · Current report

    Report date 2025-03-04 · 0001477932-25-001435 · Items 2.02,9.01

  26. 4 · Ownership change

    Report date 2025-01-09 · 0000945836-25-000002

  27. 8-K · Current report

    Report date 2024-12-30 · 0001477932-25-000056 · Items 5.07,9.01

  28. DEF 14A · Proxy statement

    Report date 2024-11-27 · 0001477932-24-007662

  29. 8-K · Current report

    Report date 2024-10-29 · 0001477932-24-007251 · Items 5.03,8.01,9.01

  30. 10-Q · Quarterly report

    Report date 2024-09-30 · 0001477932-24-007130

  31. 8-K · Current report

    Report date 2024-10-08 · 0001477932-24-006589 · Items 8.01,9.01

  32. 8-K · Current report

    Report date 2024-10-15 · 0001477932-24-006503 · Items 5.03,7.01,8.01,9.01

  33. 10-Q · Quarterly report

    Report date 2024-06-30 · 0001477932-24-004672

  34. 8-K · Current report

    Report date 2024-07-30 · 0001477932-24-004495 · Items 8.01,9.01

  35. 4 · Ownership change

    Report date 2024-06-24 · 0000945836-24-000010

  36. 8-K · Current report

    Report date 2024-06-07 · 0001477932-24-003675 · Items 5.02,9.01

  37. 10-Q · Quarterly report

    Report date 2024-03-31 · 0001477932-24-003003

  38. 10-K · Annual report

    Report date 2023-12-31 · 0001477932-24-002170

  39. SC 13D/A · Ownership disclosure

    0001493152-24-009861

  40. 8-K · Current report

    Report date 2024-03-04 · 0001477932-24-001039 · Items 8.01,9.01

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 · 0000728385Birchtech Corp.

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
  • Midwest Energy Emissions Corp. · former SEC name · 2011-07-20 to 2024-08-12
  • China Youth Media, Inc. · former SEC name · 2008-10-16 to 2011-10-06
  • DIGICORP, INC. · former SEC name · 2008-03-31 to 2008-09-25
  • DIGICORP · former SEC name · 2001-08-09 to 2008-03-31

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$17.41M$18.70M
2023-12-31$17.63M$19.49M
2022-12-31$21.62M$24.89M
2021-12-31$13.01M$16.18M
2020-12-31$8.16M$10.62M
2019-12-31$11.42M$15.05M
2018-12-31$12.30M$16.50M
2017-12-31$27.50M$37.80M

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

Explore the CPI history ↗