Insider · CIK 0001486672

Myszkowski Kenneth Allen

CIK 0001486672 Name as filed on the most recent filing

Filed as Myszkowski Kenneth Allen (27)

51 transaction lines · from 27 filings · filed 2010-08-30 to 2025-01-07 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.

51 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
2025-01-07 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 2 lines 354,500, disposed Open Form 4 filing 0001628280-25-000805
2025-01-06 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 2 lines 538,595, disposed Open Form 4 filing 0001628280-25-000805
2024-03-06 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 1,407,600, disposed Open Form 4 filing 0001628280-24-010062
2024-01-05 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 3 lines 567,910, disposed Open Form 4 filing 0001628280-24-000866
2023-06-27 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 543,000, disposed Open Form 4 filing 0001628280-23-023950
2022-12-29 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 1,225,000, disposed Open Form 4 filing 0001209191-22-063020
2022-01-05 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 4 lines 2,467,941, disposed Open Form 4 filing 0001209191-22-002290
2021-01-12 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 116,721, disposed Open Form 4 filing 0001209191-21-003295
2021-01-11 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 939,589, disposed Open Form 4 filing 0001209191-21-003295
2021-01-06 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 3 lines 2,218,477, disposed Open Form 4 filing 0001209191-21-002577
2020-11-09 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 2 lines 3,018,071, disposed Open Form 4 filing 0001209191-20-058075
2020-10-20 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 1,576,131, disposed Open Form 4 filing 0001209191-20-055599
2020-01-21 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 6 lines 1,992,925, disposed Open Form 4 filing 0001209191-20-004722
2020-01-06 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 3 lines 1,202,201, disposed Open Form 4 filing 0001209191-20-002613
2019-11-01 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 2 lines 1,547,378, disposed Open Form 4 filing 0001209191-19-054789
2019-05-21 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 595,562, disposed Open Form 4 filing 0001209191-19-032137
2019-02-19 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 144,000, disposed Open Form 4 filing 0001209191-19-011831
2019-01-17 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 1,191,281, disposed Open Form 4 filing 0001209191-19-004624
2019-01-02 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 99,829, disposed Open Form 4 filing 0001209191-19-001476
2018-09-06 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 2 lines 870,200, disposed Open Form 4 filing 0001209191-18-050356
2018-06-19 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 280,200, disposed Open Form 4 filing 0001209191-18-038884
2018-05-31 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 138,600, disposed Open Form 4 filing 0001209191-18-034785
2018-05-30 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 15,400, disposed Open Form 4 filing 0001209191-18-034785
2018-03-27 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 160,000, disposed Open Form 4 filing 0001209191-18-021843
2016-08-23 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 55,200, disposed Open Form 4 filing 0001209191-16-138836
2016-08-23 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 55,200, disposed Open Form 4 filing 0001209191-16-138541
2016-08-22 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 104,800, disposed Open Form 4 filing 0001209191-16-138836
2016-08-22 S, Open-market sale Arrowhead Pharmaceuticals, Inc.ARWR 104,800, disposed Open Form 4 filing 0001209191-16-138541
2015-12-30 S, Open-market sale Arrowhead Research CorpARWR 143,117, disposed Open Form 4 filing 0001209191-16-088041
2014-08-15 S, Open-market sale Arrowhead Research CorpARWR 560,860, disposed Open Form 4 filing 0001181431-14-029708
2014-02-12 S, Open-market sale Arrowhead Research CorpARWR 300,290, disposed Open Form 4 filing 0001181431-14-006597

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 1
  • Open-market sale 50
  • 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. Myszkowski Kenneth Allen, insider transactions. Retrieved 2026-08-22 from https://ebomi.com/insider/0001486672

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

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