A business in context

AMBA research notebook

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

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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. 4 · Ownership change

    Report date 2026-09-25 · 0001280263-26-000077

  2. 4 · Ownership change

    Report date 2026-09-18 · 0001280263-26-000075

  3. 4 · Ownership change

    Report date 2026-09-17 · 0001280263-26-000073

  4. 4 · Ownership change

    Report date 2026-09-17 · 0001280263-26-000072

  5. 4 · Ownership change

    Report date 2026-09-17 · 0001280263-26-000071

  6. 4 · Ownership change

    Report date 2026-09-17 · 0001280263-26-000070

  7. 4 · Ownership change

    Report date 2026-09-08 · 0001280263-26-000065

  8. 4 · Ownership change

    Report date 2026-09-08 · 0001280263-26-000062

  9. 10-Q · Quarterly report

    Report date 2026-07-31 · 0001193125-26-383365

  10. 8-K · Current report

    Report date 2026-09-03 · 0001193125-26-381923 · Items 2.02,9.01

  11. 8-K · Current report

    Report date 2026-06-26 · 0001193125-26-292824 · Items 5.02,5.07,9.01

  12. 10-Q · Quarterly report

    Report date 2026-04-30 · 0001193125-26-253198

  13. 8-K · Current report

    Report date 2026-05-28 · 0001193125-26-245234 · Items 2.02,9.01

  14. DEF 14A · Proxy statement

    Report date 2026-06-26 · 0001193125-26-227183

  15. 10-K · Annual report

    Report date 2026-01-31 · 0001193125-26-119321

  16. 8-K · Current report

    Report date 2026-02-23 · 0001193125-26-083175 · Items 5.02

  17. 8-K · Current report

    Report date 2026-02-23 · 0001193125-26-076823 · Items 2.02,5.02,9.01

  18. 10-Q · Quarterly report

    Report date 2025-10-31 · 0001193125-25-307917

  19. 8-K · Current report

    Report date 2025-11-24 · 0001193125-25-297233 · Items 2.02,5.02,9.01

  20. 10-Q · Quarterly report

    Report date 2025-07-31 · 0001193125-25-194853

  21. 8-K · Current report

    Report date 2025-08-28 · 0001193125-25-191300 · Items 2.02,9.01

  22. 8-K · Current report

    Report date 2025-06-04 · 0001193125-25-137166 · Items 5.07

  23. 10-Q · Quarterly report

    Report date 2025-04-30 · 0000950170-25-080767

  24. 8-K · Current report

    Report date 2025-05-29 · 0001193125-25-130656 · Items 2.02,9.01

  25. DEF 14A · Proxy statement

    Report date 2025-06-04 · 0001193125-25-097128

  26. 8-K · Current report

    Report date 2025-04-02 · 0001193125-25-073534 · Items 5.02

  27. 10-K · Annual report

    Report date 2025-01-31 · 0000950170-25-046499

  28. 8-K · Current report

    Report date 2025-02-24 · 0001193125-25-042642 · Items 5.02

  29. 8-K · Current report

    Report date 2025-02-26 · 0001193125-25-036769 · Items 2.02,9.01

  30. 8-K · Current report

    Report date 2024-12-20 · 0001193125-24-285963 · Items 1.01

  31. 10-Q · Quarterly report

    Report date 2024-10-31 · 0000950170-24-134023

  32. 8-K · Current report

    Report date 2024-11-26 · 0001193125-24-266132 · Items 2.02,9.01

  33. SC 13G/A · Ownership disclosure

    0000932471-24-000861

  34. SC 13G · Ownership disclosure

    0000932471-24-000253

  35. 10-Q · Quarterly report

    Report date 2024-07-31 · 0000950170-24-103199

  36. 8-K · Current report

    Report date 2024-08-27 · 0001193125-24-207779 · Items 2.02,9.01

  37. 8-K · Current report

    Report date 2024-06-12 · 0001193125-24-162670 · Items 5.02,5.07,9.01

  38. 10-Q · Quarterly report

    Report date 2024-04-30 · 0000950170-24-069790

  39. 8-K · Current report

    Report date 2024-05-30 · 0001193125-24-150359 · Items 2.02,9.01

  40. DEF 14A · Proxy statement

    Report date 2024-06-12 · 0001193125-24-130845

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: 9 transaction rows9SGrant / award: 7 transaction rows7AExercise / 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
2026-09-25
2026-09-28
PAISLEY CHRISTOPHER B
10b5-1 checkbox reported
S · Sale
Disposed
Ordinary Shares250.070.76
2026-09-18
2026-09-21
Young John Alexander
10b5-1 checkbox reported
S · Sale
Disposed
Ordinary Shares1896.067.28
2026-09-17
2026-09-18
Wang Feng-MingS · Sale
Disposed
Ordinary Shares6086.064.83
2026-09-17
2026-09-18
Ju Chi-HongS · Sale
Disposed
Ordinary Shares2009.064.83
2026-09-17
2026-09-18
Lee Chan WS · Sale
Disposed
Ordinary Shares2893.064.83
2026-09-17
2026-09-18
Young John AlexanderS · Sale
Disposed
Ordinary Shares3126.064.83
2026-09-08
2026-09-10
Hu ChenmingA · Grant / award
Acquired
Ordinary Shares3151.00.0
2026-09-08
2026-09-10
Bryant Gregory MA · Grant / award
Acquired
Ordinary Shares3151.00.0
2026-09-08
2026-09-10
Breithaupt Chantelle YvetteA · Grant / award
Acquired
Ordinary Shares3151.00.0
2026-09-08
2026-09-10
Schwarting Elizabeth MA · Grant / award
Acquired
Ordinary Shares3151.00.0
2026-09-08
2026-09-10
Hon Hsiao-WuenA · Grant / award
Acquired
Ordinary Shares3151.00.0
2026-09-08
2026-09-10
RICHARDSON DAVID JEFFREYA · Grant / award
Acquired
Ordinary Shares3151.00.0
2026-09-08
2026-09-10
PAISLEY CHRISTOPHER BA · Grant / award
Acquired
Ordinary Shares3151.00.0
2026-07-09
2026-07-10
Chen Yun-LungS · Sale
Disposed
Ordinary Shares5958.078.66
2026-07-01
2026-07-02
Ju Chi-HongS · Sale
Disposed
Ordinary Shares10000.088.84
2026-07-01
2026-07-02
Wang Feng-Ming
10b5-1 checkbox reported
S · Sale
Disposed
Ordinary Shares16250.090.08

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 · 0001280263AMBARELLA 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
    2025-01-31$284.87M$305.21M
    2024-01-31$226.47M$249.78M
    2023-01-31$337.61M$386.61M
    2022-01-31$331.86M$410.07M
    2021-01-31$222.99M$289.96M
    2020-01-31$228.73M$300.81M
    2019-01-31$227.77M$305.21M
    2018-01-31$295.40M$405.34M

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

    Explore the CPI history ↗