A business in context

HDSN research notebook

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

Research JSON

Filing timeline

Download filings CSV

SEC submissions · retrieved 2026-10-23 · 8022 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. 4 · Ownership change

    Report date 2026-09-24 · 0000921895-26-002658

  2. 4 · Ownership change

    Report date 2026-09-21 · 0000921895-26-002633

  3. 4 · Ownership change

    Report date 2026-09-16 · 0000921895-26-002585

  4. 4 · Ownership change

    Report date 2026-09-02 · 0000921895-26-002492

  5. 4 · Ownership change

    Report date 2026-08-24 · 0000921895-26-002318

  6. 4 · Ownership change

    Report date 2026-08-12 · 0000921895-26-002194

  7. 10-Q · Quarterly report

    Report date 2026-06-30 · 0001104659-26-092682

  8. 8-K · Current report

    Report date 2026-08-05 · 0001104659-26-091361 · Items 8.01,9.01

  9. 8-K · Current report

    Report date 2026-08-05 · 0001104659-26-091092 · Items 2.02,9.01

  10. 4 · Ownership change

    Report date 2026-07-29 · 0000921895-26-001914

  11. 4 · Ownership change

    Report date 2026-07-20 · 0000921895-26-001855

  12. 8-K · Current report

    Report date 2026-06-11 · 0001104659-26-073424 · Items 8.01

  13. 8-K · Current report

    Report date 2026-06-10 · 0001104659-26-072668 · Items 5.07

  14. 8-K · Current report

    Report date 2026-05-27 · 0001104659-26-067511 · Items 8.01,9.01

  15. 8-K · Current report

    Report date 2026-05-19 · 0001104659-26-064492 · Items 1.01,2.03,9.01

  16. 8-K · Current report

    Report date 2026-05-18 · 0001104659-26-063042 · Items 7.01,9.01

  17. 10-Q · Quarterly report

    Report date 2026-03-31 · 0001104659-26-058632

  18. 8-K · Current report

    Report date 2026-05-06 · 0001104659-26-056260 · Items 2.02,9.01

  19. DEF 14A · Proxy statement

    Report date 2026-06-10 · 0001104659-26-048223

  20. 8-K · Current report

    Report date 2026-04-10 · 0001104659-26-042384 · Items 5.02,7.01,9.01

  21. 8-K · Current report

    Report date 2026-03-13 · 0001104659-26-030906 · Items 5.02,8.01,9.01

  22. 10-K · Annual report

    Report date 2025-12-31 · 0001104659-26-028445

  23. 8-K · Current report

    Report date 2026-03-04 · 0001104659-26-023461 · Items 2.02,9.01

  24. 8-K · Current report

    Report date 2026-01-30 · 0001104659-26-009003 · Items 5.02,9.01

  25. 8-K · Current report

    Report date 2026-01-30 · 0001104659-26-008337 · Items 8.01,9.01

  26. 8-K · Current report

    Report date 2025-12-17 · 0001104659-25-122053 · Items 8.01,9.01

  27. 8-K · Current report

    Report date 2025-12-09 · 0001104659-25-119656 · Items 5.02

  28. 8-K · Current report

    Report date 2025-11-25 · 0001104659-25-117162 · Items 1.01,2.03,7.01,9.01

  29. 8-K · Current report

    Report date 2025-11-13 · 0001104659-25-111455 · Items 5.02,7.01,9.01

  30. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001104659-25-108471

  31. 8-K · Current report

    Report date 2025-11-05 · 0001104659-25-107007 · Items 2.02,9.01

  32. 8-K · Current report

    Report date 2025-11-03 · 0001104659-25-105559 · Items 2.02,5.02,7.01,9.01

  33. 8-K · Current report

    Report date 2025-10-22 · 0001104659-25-101581 · Items 8.01,9.01

  34. 10-Q · Quarterly report

    Report date 2025-06-30 · 0001410578-25-001554

  35. 8-K · Current report

    Report date 2025-07-30 · 0001104659-25-072160 · Items 2.02,9.01

  36. 8-K · Current report

    Report date 2025-06-23 · 0001104659-25-061667 · Items 1.01,2.03,9.01

  37. 8-K · Current report

    Report date 2025-06-11 · 0001104659-25-058886 · Items 5.07

  38. 10-Q · Quarterly report

    Report date 2025-03-31 · 0001410578-25-001163

  39. 8-K · Current report

    Report date 2025-05-07 · 0001104659-25-045533 · Items 2.02,9.01

  40. DEF 14A · Proxy statement

    Report date 2025-06-11 · 0001104659-25-039079

Reported insider transactions

Download transactions CSV

SEC insider transactions · retrieved 2026-10-23 · 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: 16 transaction rows16PSale: 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

16 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-09-24
2026-09-28
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.01118549.05.1
2026-09-23
2026-09-23
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.0111013.05.1
2026-09-21
2026-09-23
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.012502.05.1
2026-09-16
2026-09-18
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.0111136.05.1
2026-09-02
2026-09-04
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.015317.05.1
2026-08-25
2026-08-26
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.0191166.05.5
2026-08-24
2026-08-26
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.019446.05.5
2026-08-12
2026-08-14
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.015198.05.5
2026-07-29
2026-07-31
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.0152104.05.99
2026-07-21
2026-07-22
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.0147708.05.99
2026-07-20
2026-07-22
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.0117842.05.99
2026-07-07
2026-07-08
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.01600.05.99
2026-07-06
2026-07-08
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.014634.05.99
2026-07-02
2026-07-02
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.01271302.05.97
2026-07-01
2026-07-02
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.01288111.05.88
2026-06-30
2026-07-02
Hartree Partners, LPP · Purchase
Acquired
Common Stock, par value $0.01204789.05.68

Identity & relationships

Wikidata structured data · retrieved 2026-10-23 · 1658 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 · 0000925528HUDSON TECHNOLOGIES INC /NY

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 2026-10-23 · 1197 checked identities; 0 unavailable records

Search names and former names

    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$237.12M$254.69M
    2023-12-31$289.02M$319.58M
    2022-12-31$325.23M$374.38M
    2021-12-31$192.75M$239.63M
    2020-12-31$147.60M$192.16M
    2019-12-31$162.06M$213.57M
    2018-12-31$166.53M$223.44M
    2017-12-31$140.38M$192.96M

    Bureau of Labor Statistics · retrieved 2026-10-23 · 9 selected series; gaps remain missing

    Explore the CPI history ↗