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SEC submissions · retrieved 2026-10-22 · 8029 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. 4 · Ownership change

    Report date 2026-09-21 · 0001263136-26-000014

  2. 4 · Ownership change

    Report date 2026-09-16 · 0001645326-26-000014

  3. 4 · Ownership change

    Report date 2026-09-02 · 0001645326-26-000012

  4. 4 · Ownership change

    Report date 2026-08-11 · 0001047579-26-000005

  5. 4 · Ownership change

    Report date 2026-08-07 · 0001263136-26-000012

  6. 10-Q · Quarterly report

    Report date 2026-06-30 · 0001297184-26-000047

  7. 8-K · Current report

    Report date 2026-08-06 · 0001297184-26-000045 · Items 2.02,9.01

  8. 4 · Ownership change

    Report date 2026-07-09 · 0002141303-26-000005

  9. 8-K · Current report

    Report date 2026-07-09 · 0001104659-26-082772 · Items 5.02

  10. 8-K · Current report

    Report date 2026-07-02 · 0001297184-26-000041 · Items 8.01

  11. 4 · Ownership change

    Report date 2026-06-01 · 0002075974-26-000003

  12. 4 · Ownership change

    Report date 2026-06-01 · 0001866024-26-000003

  13. 8-K · Current report

    Report date 2026-06-01 · 0001297184-26-000038 · Items 5.07

  14. 10-Q · Quarterly report

    Report date 2026-03-31 · 0001297184-26-000033

  15. 8-K · Current report

    Report date 2026-05-07 · 0001297184-26-000031 · Items 2.02,9.01

  16. DEF 14A · Proxy statement

    Report date 2026-06-01 · 0001297184-26-000023

  17. 8-K · Current report

    Report date 2026-03-12 · 0001104659-26-027814 · Items 8.01

  18. 8-K · Current report

    Report date 2026-03-03 · 0001297184-26-000015 · Items 5.02,9.01

  19. 8-K · Current report

    Report date 2026-03-03 · 0001297184-26-000013 · Items 1.01,9.01

  20. 10-K · Annual report

    Report date 2025-12-31 · 0001297184-26-000009

  21. 8-K · Current report

    Report date 2026-02-26 · 0001297184-26-000007 · Items 2.02,9.01

  22. 8-K · Current report

    Report date 2026-01-06 · 0001297184-26-000002 · Items 1.01,7.01,9.01

  23. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001297184-25-000064

  24. 8-K · Current report

    Report date 2025-11-06 · 0001297184-25-000062 · Items 2.02,9.01

  25. 8-K · Current report

    Report date 2025-10-21 · 0001297184-25-000058 · Items 1.01

  26. 8-K · Current report

    Report date 2025-09-15 · 0001297184-25-000054 · Items 1.01

  27. 8-K · Current report

    Report date 2025-08-08 · 0001558370-25-011134 · Items 1.01,7.01,9.01

  28. 10-Q · Quarterly report

    Report date 2025-06-30 · 0001297184-25-000050

  29. 8-K · Current report

    Report date 2025-08-07 · 0001297184-25-000048 · Items 2.02,9.01

  30. 8-K · Current report

    Report date 2025-07-18 · 0001297184-25-000040 · Items 5.02

  31. 8-K · Current report

    Report date 2025-06-02 · 0001297184-25-000036 · Items 5.03,5.07,9.01

  32. 10-Q · Quarterly report

    Report date 2025-03-31 · 0001297184-25-000029

  33. 8-K · Current report

    Report date 2025-05-07 · 0001297184-25-000025 · Items 2.02,9.01

  34. DEF 14A · Proxy statement

    Report date 2025-06-02 · 0001297184-25-000018

  35. 10-K · Annual report

    Report date 2024-12-31 · 0001297184-25-000008

  36. 8-K · Current report

    Report date 2025-02-27 · 0001297184-25-000003 · Items 2.02,9.01

  37. 10-Q · Quarterly report

    Report date 2024-09-30 · 0001297184-24-000058

  38. 8-K · Current report

    Report date 2024-11-06 · 0001297184-24-000055 · Items 2.02,9.01

  39. 8-K · Current report

    Report date 2024-08-28 · 0001297184-24-000051 · Items 1.01

  40. 10-Q · Quarterly report

    Report date 2024-06-30 · 0001297184-24-000048

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: 5 transaction rows5SGrant / award: 2 transaction rows2AExercise / conversion: 4 transaction rows4MTax / exercise payment: 0 transaction rows0FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

11 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-09-21
2026-09-23
PETERS WILLIAM J
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock4139.025.0
2026-09-16
2026-09-17
Zhou RongS · Sale
Disposed
Common Stock10000.023.94
2026-09-16
2026-09-17
Zhou RongM · Exercise / conversion
Acquired
Common Stock10000.013.35
2026-09-16
2026-09-17
Zhou RongM · Exercise / conversion
Disposed
Employee Stock Option (right to buy)
Derivative security
10000.00.0
2026-09-02
2026-09-03
Zhou RongS · Sale
Disposed
Common Stock3187.023.63
2026-08-11
2026-08-12
PRINS RICHARD KS · Sale
Disposed
Common Stock7973.020.3
2026-08-07
2026-08-11
PETERS WILLIAM J
10b5-1 checkbox reported
M · Exercise / conversion
Acquired
Common Stock5053.019.79
2026-08-07
2026-08-11
PETERS WILLIAM J
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock8180.022.48
2026-08-07
2026-08-11
PETERS WILLIAM J
10b5-1 checkbox reported
M · Exercise / conversion
Disposed
Employee Stock Option (right to buy)
Derivative security
5053.00.0
2026-07-09
2026-07-13
Pierce Anthony TA · Grant / award
Acquired
Common Stock7886.00.0
2026-07-09
2026-07-13
Pierce Anthony TA · Grant / award
Acquired
Stock Option (right to buy)
Derivative security
16646.00.0

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 · 0001297184Amphastar Pharmaceuticals, 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

    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$731.97M$786.20M
    2023-12-31$644.39M$712.53M
    2022-12-31$498.99M$574.40M
    2021-12-31$437.77M$544.25M
    2020-12-31$349.85M$455.45M
    2019-12-31$322.36M$424.82M
    2018-12-31$294.67M$395.37M
    2017-12-31$240.18M$330.14M

    Bureau of Labor Statistics · retrieved 2026-10-22 · 9 selected series; gaps remain missing

    Explore the CPI history ↗