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Insider · CIK 0001316320

Hu Chenming

CIK 0001316320 Name as filed on the most recent filing

Filed as Hu Chenming (19)

21 transaction lines · from 19 filings · filed 2011-08-11 to 2025-03-19 The span is the filing dates this catalog holds, not the entity's full filing history. Absence here is not evidence of absence at the SEC.

How this page attributes a trade

A line appears here when the filing that carries it names this CIK as a reporting owner, not only when the parser picked this CIK as the line's primary owner. That is why a joint filing appears on both owners' pages rather than vanishing from the second one. The catalog never merges two CIKs into one person and never splits one CIK into two: identity here is the SEC's own identifier and nothing else.

01

Issuers this insider has filed against

Ordered by last-seen filing date, newest first. Roles are as filed on the Form 4 and are not normalised.

Fault

This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-20 05:22 UTC.

No issuer is recorded

The catalog holds no filing linking this CIK to an issuer.

02

Transactions

Every stored Form 4 line naming this reporting owner, newest transaction date first. Each row links to the filing it came from.

21 transactions · Newest transaction date first, id breaking the tie.

Fault

This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-20 05:22 UTC.

Transactions filed by this insider
Direction Date Issuer Code Shares Price Value USD Filing
2025-03-17 ACM Research, Inc.
ACMR 		S, Open-market sale 163,308 disposed 30.00 4,899,240.00 Form 4, filing 0001140361-25-009529
2021-09-22 Ambarella Inc
AMBA 		S, Open-market sale 3,666 disposed 160.00 586,560.00 Form 4, filing 0001280263-21-000105
2021-09-09 Ambarella Inc
AMBA 		S, Open-market sale 4,000 disposed 140.00 560,000.00 Form 4, filing 0001280263-21-000082
2021-09-01 Ambarella Inc
AMBA 		S, Open-market sale 4,000 disposed 120.00 480,000.00 Form 4, filing 0001280263-21-000072
2021-02-12 ACM Research, Inc.
ACMR 		S, Open-market sale 10,000 disposed 120.00 1,200,000.00 Form 4, filing 0001140361-21-005063
2020-12-03 Ambarella Inc
AMBA 		S, Open-market sale 5,818 disposed 88.00 511,984.00 Form 4, filing 0001280263-20-000142
2020-11-27 Ambarella Inc
AMBA 		S, Open-market sale 5,000 disposed 78.00 390,000.00 Form 4, filing 0001280263-20-000137
2020-11-24 Ambarella Inc
AMBA 		S, Open-market sale 5,000 disposed 70.67 353,350.00 Form 4, filing 0001280263-20-000128
2020-08-03 ACM Research, Inc.
ACMR 		S, Open-market sale 7,806 disposed 100.00 780,600.00 Form 4, filing 0001140361-20-017588
2020-07-13 ACM Research, Inc.
ACMR 		S, Open-market sale 14,000 disposed 84.15 1,178,100.00 Form 4, filing 0001140361-20-016099
2020-06-03 ACM Research, Inc.
ACMR 		S, Open-market sale 8,194 disposed 65.12 533,593.28 Form 4, filing 0001140361-20-013230
2019-11-25 Inphi Corp
IPHI 		S, Open-market sale 7,000 disposed 71.00 497,000.00 Form 4, filing 0001437749-19-023559
2019-09-30 Ambarella Inc
AMBA 		S, Open-market sale 10,000 disposed 63.00 630,000.00 Form 4, filing 0001280263-19-000104
2015-06-09 Ambarella Inc
AMBA 		S, Open-market sale 14,900 disposed 110.43 1,645,445.74 Form 4, filing 0001280263-15-000047
2015-06-09 Ambarella Inc
AMBA 		S, Open-market sale 100 disposed 112.10 11,210.00 Form 4, filing 0001280263-15-000047
2013-11-18 Sandisk Corp
SNDK 		S, Open-market sale 22,889 disposed 69.44 1,589,393.85 Form 4, filing 0001000180-13-000071
2013-08-13 Sandisk Corp
SNDK 		S, Open-market sale 12,000 disposed 58.00 696,000.00 Form 4, filing 0001242648-13-000069
2013-02-05 Sandisk Corp
SNDK 		S, Open-market sale 12,000 disposed 49.72 596,691.60 Form 4, filing 0001242648-13-000008
2011-08-10 Inphi Corp
IPHI 		P, Open-market purchase 11,700 acquired 8.50 99,450.00 Form 4, filing 0001181431-11-045501
2011-08-10 Inphi Corp
IPHI 		P, Open-market purchase 7,900 acquired 8.60 67,940.00 Form 4, filing 0001181431-11-045021
2011-08-09 Inphi Corp
IPHI 		P, Open-market purchase 15,000 acquired 8.68 130,140.00 Form 4, filing 0001181431-11-045021

This column is intentionally blank

No transaction line is stored for this reporting owner, though the catalog holds filings naming them. That happens when the filings report only holdings or only positions the store does not carry, and when a parse failed; each filing page states its own parse status.

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Codes on this page
S, Open-market sale
Open-market sale
P, Open-market purchase
Open-market purchase

Every value is as reported on the Form 4. A price the filing did not report is marked Not reported and no value is computed from it. Codes outside the open market, drawn in grey behind a dashed rule, are compensation and administrative machinery rather than a decision to trade at the prevailing price.

What this insider's stored lines contain

Exact counts over every stored line for this entity. This is a statement of composition, not a filter: the only filter this page offers is the open-market one above, because that is the only one an index serves today.

  • Open-market purchase 3
  • Open-market sale 18
  • Option exercise 0
  • Grant or award 0
  • Tax withholding 0
  • Disposition to the issuer 0
  • In-the-money option exercise 0

How to cite this page

ebomi catalog. Hu Chenming, insider transactions. Retrieved 2026-08-21 from https://ebomi.com/insider/0001316320

Balogh, A. Insider trading. Scientific Data 10, 237 (2023) doi:10.1038/s41597-023-02147-6

This page as JSON The JSON twin is shaped by the same read model as this page, so the two cannot disagree. Its envelope carries the canonical URL, the retrieval time, the coverage claim, and the licence statement.