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Insider · CIK 0001559807

Sonsini Peter W.

CIK 0001559807 Name as filed on the most recent filing

Filed as Sonsini Peter W. (78)

129 transaction lines · from 78 filings · filed 2014-08-06 to 2022-06-23 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.

80 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
2018-05-08 P, Open-market purchase Aveo Pharmaceuticals IncAVEO 151,250, acquired Open Form 4 filing 0001209191-18-029304
2018-04-23 P, Open-market purchase Surface Oncology, Inc.SURF 1,999,995, acquired Open Form 4 filing 0001209191-18-025851
2018-04-10 P, Open-market purchase Aveo Pharmaceuticals IncAVEO 499,994, acquired Open Form 4 filing 0001209191-18-024542
2018-04-09 P, Open-market purchase Aveo Pharmaceuticals IncAVEO 78,099, acquired Open Form 4 filing 0001209191-18-024542
2018-04-06 P, Open-market purchase Aveo Pharmaceuticals IncAVEO 1,536,943, acquired Open Form 4 filing 0001209191-18-024542
2018-03-27 P, Open-market purchase Tracon Pharmaceuticals, Inc.TCON 1,911,503, acquired Open Form 4 filing 0001209191-18-021755
2018-03-27 P, Open-market purchase Adaptimmune Therapeutics PLCADAP 11,500,200, acquired Open Form 4 filing 0001209191-18-021945
2018-03-26 P, Open-market purchase Adaptimmune Therapeutics PLCADAP 1,087,553, acquired Open Form 4 filing 0001209191-18-021945
2018-03-23 P, Open-market purchase Adaptimmune Therapeutics PLCADAP 572,358, acquired Open Form 4 filing 0001209191-18-021552
2018-03-22 P, Open-market purchase Adaptimmune Therapeutics PLCADAP 1,655,669, acquired Open Form 4 filing 0001209191-18-021552
2018-03-21 P, Open-market purchase Adaptimmune Therapeutics PLCADAP 189,820, acquired Open Form 4 filing 0001209191-18-021552
2018-02-26 S, Open-market sale Arca biopharma, Inc.ABIO 731,273, disposed Open Form 4 filing 0001209191-18-013940
2017-11-27 S, Open-market sale Appian CorpAPPN 11,101,894, disposed Open Form 4 filing 0001209191-17-062623
2017-11-20 S, Open-market sale Appian CorpAPPN 54,971,857, disposed Open Form 4 filing 0001209191-17-062095
2017-07-03 P, Open-market purchase Mersana Therapeutics, Inc.MRSN 15,000,000, acquired Open Form 4 filing 0001209191-17-044156
2017-03-28 P, Open-market purchase Aveo Pharmaceuticals IncAVEO 3,000,000, acquired Open Form 4 filing 0001209191-17-023495
2017-03-27 P, Open-market purchase Adaptimmune Therapeutics PLCADAP 9,009,000, acquired Open Form 4 filing 0001209191-17-023149
2016-12-19 P, Open-market purchase Achaogen IncAKAO 6,750,000, acquired Open Form 4 filing 0001209191-16-155948
2016-12-19 P, Open-market purchase Achaogen IncAKAO 6,750,000, acquired Open Form 4 filing 0001209191-16-155951
2016-11-29 P, Open-market purchase Tracon Pharmaceuticals, Inc.TCON 4,999,999, acquired Open Form 4 filing 0001209191-16-152344
2016-07-29 P, Open-market purchase Interleukin Genetics IncILIU 2,000,000, acquired Open Form 4 filing 0001209191-16-134935
2016-07-18 P, Open-market purchase Ardelyx, Inc.ARDX 2 lines 13,333,338, acquired Open Form 4 filing 0001209191-16-133491
2016-01-13 P, Open-market purchase Ardelyx, Inc.ARDX 2 lines 10,000,000, acquired Open Form 4 filing 0001209191-16-091435
2015-10-06 P, Open-market purchase Mirna Therapeutics, Inc.MIRN 5,999,994, acquired Open Form 4 filing 0001209191-15-074313
2015-02-04 P, Open-market purchase Tracon Pharmaceuticals, Inc.TCON 5,000,000, acquired Open Form 4 filing 0001181431-15-002010
2014-12-23 P, Open-market purchase Interleukin Genetics IncILIU 1,992,857, acquired Open Form 4 filing 0001181431-14-039775
2014-08-06 P, Open-market purchase Loxo Oncology, Inc.LOXO 2,999,997, acquired Open Form 4 filing 0001181431-14-028435

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.

Search the catalog
Codes on this page
P, Open-market purchase
Open-market purchase
S, Open-market sale
Open-market sale
Relationships on this page
%, Ten percent owner
Ten percent owner

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 71
  • Open-market sale 9
  • 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. Sonsini Peter W., insider transactions. Retrieved 2026-08-25 from https://ebomi.com/insider/0001559807

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.