Insider · CIK 0001456804

Howley Michael G

CIK 0001456804 Name as filed on the most recent filing

Filed as Howley Michael G (37)

77 transaction lines · from 37 filings · filed 2011-04-04 to 2018-09-26 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 2026-08-25 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.

77 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 2026-08-25 05:24 UTC.

Transactions filed by this insider
Direction Date Code Company Value USD Filing
2015-05-07 S, Open-market sale Abiomed IncABMD 108,196, disposed Open Form 4 filing 0001179110-15-007533
2015-05-07 S, Open-market sale Abiomed IncABMD 70,846, disposed Open Form 4 filing 0001179110-15-007533
2015-05-07 S, Open-market sale Abiomed IncABMD 35,333, disposed Open Form 4 filing 0001179110-15-007533
2015-05-07 S, Open-market sale Abiomed IncABMD 6,197, disposed Open Form 4 filing 0001179110-15-007533
2014-10-31 S, Open-market sale Abiomed IncABMD 480,000, disposed Open Form 4 filing 0001179110-14-015988
2014-05-27 S, Open-market sale Abiomed IncABMD 115,236, disposed Open Form 4 filing 0001179110-14-009305
2014-05-23 S, Open-market sale Abiomed IncABMD 79,430, disposed Open Form 4 filing 0001179110-14-009305
2014-05-15 S, Open-market sale Abiomed IncABMD 26,536, disposed Open Form 4 filing 0001179110-14-008679
2014-02-13 S, Open-market sale Abiomed IncABMD 421,500, disposed Open Form 4 filing 0001179110-14-002957
2014-02-03 S, Open-market sale Abiomed IncABMD 266,558, disposed Open Form 4 filing 0001179110-14-002000
2013-11-21 S, Open-market sale Abiomed IncABMD 283,500, disposed Open Form 4 filing 0001179110-13-017008
2013-11-08 S, Open-market sale Abiomed IncABMD 266,500, disposed Open Form 4 filing 0001179110-13-016486
2013-08-13 S, Open-market sale Abiomed IncABMD 193,200, disposed Open Form 4 filing 0001179110-13-013194
2013-08-05 S, Open-market sale Abiomed IncABMD 36,848, disposed Open Form 4 filing 0001179110-13-012810
2013-07-17 S, Open-market sale Abiomed IncABMD 244,500, disposed Open Form 4 filing 0001179110-13-011917
2013-06-04 S, Open-market sale Abiomed IncABMD 82,276, disposed Open Form 4 filing 0001179110-13-009855
2013-05-28 S, Open-market sale Abiomed IncABMD 121,472, disposed Open Form 4 filing 0001179110-13-009367
2013-05-23 S, Open-market sale Abiomed IncABMD 16,460, disposed Open Form 4 filing 0001179110-13-009252
2013-05-02 S, Open-market sale Abiomed IncABMD 196,248, disposed Open Form 4 filing 0001179110-13-007785
2012-05-01 S, Open-market sale Abiomed IncABMD 197,604, disposed Open Form 4 filing 0001179110-12-007654
2011-11-30 S, Open-market sale Abiomed IncABMD 12,000, disposed Open Form 4 filing 0001179110-11-015874
2011-11-04 S, Open-market sale Abiomed IncABMD 88,000, disposed Open Form 4 filing 0001179110-11-014884
2011-06-07 S, Open-market sale Abiomed IncABMD 46,495, disposed Open Form 4 filing 0001179110-11-009432
2011-04-15 S, Open-market sale Abiomed IncABMD 86,150, disposed Open Form 4 filing 0001179110-11-006569
2011-04-01 S, Open-market sale Abiomed IncABMD 72,259, disposed Open Form 4 filing 0001179110-11-009999
2011-03-31 S, Open-market sale Abiomed IncABMD 72,259, disposed Open Form 4 filing 0001179110-11-005863

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.

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 77
  • 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. Howley Michael G, insider transactions. Retrieved 2026-08-25 from https://ebomi.com/insider/0001456804

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

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