Insider · CIK 0001645326

Zhou Rong

CIK 0001645326 Name as filed on the most recent filing

Filed as Zhou Rong (28)

35 transaction lines · from 28 filings · filed 2015-06-19 to 2025-12-18 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 2026-08-26 05:24 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.

35 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 2026-08-26 05:24 UTC.

Transactions filed by this insider
Direction Date Code Company Value USD Filing
2025-12-17 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 256,379, disposed Open Form 4 filing 0001645326-25-000004
2024-12-13 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 361,840, disposed Open Form 4 filing 0001415889-24-029491
2024-12-12 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 310,975, disposed Open Form 4 filing 0001415889-24-029491
2024-11-12 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 336,930, disposed Open Form 4 filing 0001415889-24-026764
2024-09-13 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 144,785, disposed Open Form 4 filing 0001415889-24-023514
2024-08-26 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 193,400, disposed Open Form 4 filing 0001415889-24-022373
2023-12-04 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 209,364, disposed Open Form 4 filing 0001104659-23-123689
2023-12-01 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 252,831, disposed Open Form 4 filing 0001104659-23-123689
2023-06-15 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 258,947, disposed Open Form 4 filing 0001104659-23-072876
2023-06-13 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 241,200, disposed Open Form 4 filing 0001104659-23-071286
2023-05-18 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 442,050, disposed Open Form 4 filing 0001104659-23-062799
2022-02-25 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 381,087, disposed Open Form 4 filing 0001104659-22-028666
2022-02-08 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 187,390, disposed Open Form 4 filing 0001104659-22-017337
2022-01-10 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 2 lines 530,684, disposed Open Form 4 filing 0001104659-22-003306
2021-11-11 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 169,308, disposed Open Form 4 filing 0001104659-21-138312
2021-08-02 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 193,734, disposed Open Form 4 filing 0001104659-21-100061
2021-07-26 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 125,220, disposed Open Form 4 filing 0001104659-21-096428
2021-07-20 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 106,697, disposed Open Form 4 filing 0001104659-21-094902
2021-06-09 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 92,653, disposed Open Form 4 filing 0001104659-21-079475
2021-06-08 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 158,177, disposed Open Form 4 filing 0001104659-21-079475
2021-05-14 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 343,464, disposed Open Form 4 filing 0001104659-21-068391
2021-05-13 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 13,706, disposed Open Form 4 filing 0001104659-21-068391
2020-06-04 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 188,177, disposed Open Form 4 filing 0001104659-20-070320
2020-06-03 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 247,678, disposed Open Form 4 filing 0001104659-20-070320
2019-05-06 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 218,496, disposed Open Form 4 filing 0001104659-19-027598
2019-03-01 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 80,000, disposed Open Form 4 filing 0001104659-19-012642
2019-02-05 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 98,647, disposed Open Form 4 filing 0001104659-19-006336
2018-12-03 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 23,958, disposed Open Form 4 filing 0001104659-18-071675
2018-11-09 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 22,869, disposed Open Form 4 filing 0001104659-18-067954
2018-11-08 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 21,680, disposed Open Form 4 filing 0001104659-18-067954
2016-12-05 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 1,262, disposed Open Form 4 filing 0001104659-16-161060
2016-06-15 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 24,584, disposed Open Form 4 filing 0000899243-16-023237
2015-12-16 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 11,032, disposed Open Form 4 filing 0000899243-15-010080
2015-06-17 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 16,480, disposed Open Form 4 filing 0001209191-15-055091

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.

Codes on this page
S, Open-market sale
Open-market sale
Relationships on this page
O, Officer
Officer

Every value is as reported on the Form 4, totalled to the dollar. Share counts, the price per share and the full list of reporting owners are on each filing's own page, which every row here opens. A row marked n lines adds up that many filed lines of one filing, on one day, on one side of the market; a filing whose lines fall across two pages is left as its lines on both, so no total here is ever short.

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 0
  • Open-market sale 35
  • 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. Zhou Rong, insider transactions. Retrieved 2026-08-26 from https://ebomi.com/insider/0001645326

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

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