Insider · CIK 0001263136

Peters William J

CIK 0001263136 Name as filed on the most recent filing

Filed as Peters William J (67)

91 transaction lines · from 67 filings · filed 2005-12-15 to 2026-08-11 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 2026-08-22 05:23 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.

91 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 2026-08-22 05:23 UTC.

Transactions filed by this insider
Direction Date Code Company Value USD Filing
2026-08-07 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 183,886, disposed Open Form 4 filing 0001263136-26-000012
2025-03-04 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 116,515, disposed Open Form 4 filing 0001415889-25-007241
2024-11-06 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 386,523, disposed Open Form 4 filing 0001415889-24-026465
2024-07-31 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 454,773, disposed Open Form 4 filing 0001415889-24-020626
2024-06-27 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 2 lines 147,169, disposed Open Form 4 filing 0001415889-24-018417
2024-03-06 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 3 lines 842,883, disposed Open Form 4 filing 0001415889-24-007367
2023-11-14 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 3 lines 3,298,475, disposed Open Form 4 filing 0001104659-23-119090
2023-09-06 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 2 lines 3,143,195, disposed Open Form 4 filing 0001104659-23-099294
2023-06-15 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 3 lines 1,874,790, disposed Open Form 4 filing 0001104659-23-072866
2023-06-02 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 509,859, disposed Open Form 4 filing 0001104659-23-068098
2023-05-18 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 465,675, disposed Open Form 4 filing 0001104659-23-063261
2023-04-17 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 238,515, disposed Open Form 4 filing 0001104659-23-046897
2023-04-13 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 206,160, disposed Open Form 4 filing 0001104659-23-045713
2023-04-10 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 404,791, disposed Open Form 4 filing 0001104659-23-044690
2023-03-15 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 465,472, disposed Open Form 4 filing 0001104659-23-034071
2023-03-01 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 398,685, disposed Open Form 4 filing 0001104659-23-028479
2022-08-09 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 383,500, disposed Open Form 4 filing 0001104659-22-088855
2022-06-30 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 642,591, disposed Open Form 4 filing 0001104659-22-076942
2022-06-17 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 176,682, disposed Open Form 4 filing 0001104659-22-073519
2022-03-16 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 2 lines 1,724,427, disposed Open Form 4 filing 0001104659-22-035737
2022-03-15 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 272,248, disposed Open Form 4 filing 0001104659-22-035157
2022-03-07 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 382,313, disposed Open Form 4 filing 0001104659-22-032022
2022-02-25 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 2 lines 654,850, disposed Open Form 4 filing 0001104659-22-028660
2022-02-08 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 269,500, disposed Open Form 4 filing 0001104659-22-017336
2022-01-10 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 406,400, disposed Open Form 4 filing 0001104659-22-003274
2022-01-07 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 2 lines 776,222, disposed Open Form 4 filing 0001104659-22-003274
2021-12-30 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 234,000, disposed Open Form 4 filing 0001104659-22-000961
2021-12-21 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 184,934, disposed Open Form 4 filing 0001104659-21-152684
2021-12-16 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 39,066, disposed Open Form 4 filing 0001104659-21-151321
2021-11-11 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 213,300, disposed Open Form 4 filing 0001104659-21-138311
2021-08-16 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 127,524, disposed Open Form 4 filing 0001104659-21-107029
2021-07-07 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 203,739, disposed Open Form 4 filing 0001104659-21-090347
2021-03-15 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 80,745, disposed Open Form 4 filing 0001104659-21-037887
2021-01-19 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 121,237, disposed Open Form 4 filing 0001104659-21-005928
2020-08-14 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 112,223, disposed Open Form 4 filing 0001104659-20-096518
2020-07-06 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 300,405, disposed Open Form 4 filing 0001104659-20-082070
2020-03-13 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 2 lines 65,539, disposed Open Form 4 filing 0001104659-20-034907
2020-01-21 S, Open-market sale Amphastar Pharmaceuticals, Inc.AMPH 80,071, disposed Open Form 4 filing 0001104659-20-006291

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
D, Director
Director
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 91
  • 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. PETERS WILLIAM J, insider transactions. Retrieved 2026-08-24 from https://ebomi.com/insider/0001263136

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

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