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Insider · CIK 0001553335

Dupont Jakob

CIK 0001553335 Name as filed on the most recent filing

Filed as Dupont Jakob (29)

34 transaction lines · from 29 filings · filed 2014-06-30 to 2026-07-02 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 2026-08-21 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.

34 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 2026-08-21 05:23 UTC.

Transactions filed by this insider
Direction Date Issuer Code Shares Price Value USD Filing
2026-06-30 Pyxis Oncology, Inc.
PYXS 		S, Open-market sale 35,000 disposed 3.06 107,100.00 Form 4, filing 0001193125-26-294708
2023-03-02 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 5,074 disposed 3.63 18,403.40 Form 4, filing 0001567619-23-004537
2022-11-16 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 3,218 disposed 4.49 14,448.82 Form 4, filing 0001140361-22-042381
2022-11-16 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 1,124 disposed 4.49 5,047.88 Form 4, filing 0001140361-22-042381
2022-08-16 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 4,124 disposed 5.03 20,760.22 Form 4, filing 0001140361-22-030300
2022-05-17 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 3,873 disposed 5.32 20,596.61 Form 4, filing 0001140361-22-019981
2022-03-01 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 2,221 disposed 9.86 21,890.18 Form 4, filing 0001140361-22-007765
2022-02-10 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 5,000 disposed 16.00 80,000.00 Form 4, filing 0001567619-22-004499
2022-01-03 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 5,000 disposed 16.01 80,050.00 Form 4, filing 0001567619-22-000568
2021-12-01 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 5,000 disposed 17.94 89,688.50 Form 4, filing 0001567619-21-021583
2021-11-16 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 2,199 disposed 17.12 37,640.06 Form 4, filing 0001567619-21-020777
2021-11-02 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 5,000 disposed 16.41 82,050.00 Form 4, filing 0001567619-21-019331
2021-08-17 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 2,152 disposed 12.53 26,968.86 Form 4, filing 0001567619-21-016145
2021-05-18 Atara Biotherapeutics, Inc.
ATRA 		S, Open-market sale 5,184 disposed 14.55 75,427.20 Form 4, filing 0001209191-21-034428
2019-12-30 Gossamer Bio, Inc.
GOSS 		S, Open-market sale 40,000 disposed 15.00 600,004.00 Form 4, filing 0001209191-19-062303
2019-12-27 Gossamer Bio, Inc.
GOSS 		S, Open-market sale 1,994 disposed 15.81 31,534.11 Form 4, filing 0001209191-19-062303
2016-01-11 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 2,500 disposed 20.01 50,021.00 Form 4, filing 0001140361-16-047651
2016-01-07 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 1 disposed 21.33 21.33 Form 4, filing 0001140361-16-047340
2016-01-06 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 2,092 disposed 22.30 46,652.86 Form 4, filing 0001140361-16-047340
2016-01-06 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 69 disposed 21.54 1,486.27 Form 4, filing 0001140361-16-047340
2015-12-10 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 2,500 disposed 20.49 51,231.25 Form 4, filing 0001140361-15-044437
2015-11-10 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 2,500 disposed 21.17 52,923.00 Form 4, filing 0001140361-15-040926
2015-10-26 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 5,000 disposed 20.00 100,000.00 Form 4, filing 0001140361-15-038713
2015-08-10 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 2,500 disposed 22.25 55,621.50 Form 4, filing 0001140361-15-031468
2015-07-10 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 2,500 disposed 20.13 50,325.00 Form 4, filing 0001140361-15-027438
2015-07-06 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 2,500 disposed 21.22 53,050.00 Form 4, filing 0001140361-15-026948
2015-04-10 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 1,500 disposed 26.51 39,765.00 Form 4, filing 0001140361-15-015309
2015-03-10 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 1,500 disposed 27.17 40,753.65 Form 4, filing 0001140361-15-011604
2015-02-10 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 1,500 disposed 24.23 36,351.00 Form 4, filing 0001140361-15-006061
2015-01-12 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 1,100 disposed 25.63 28,188.05 Form 4, filing 0001140361-15-001809
2015-01-12 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 400 disposed 26.62 10,648.00 Form 4, filing 0001140361-15-001809
2015-01-05 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 7,500 disposed 23.00 172,500.00 Form 4, filing 0001140361-15-000981
2014-07-23 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 1,500 disposed 23.00 34,500.00 Form 4, filing 0001140361-14-029450
2014-06-26 OncoMed Pharmaceuticals Inc
OMED 		S, Open-market sale 1,500 disposed 23.00 34,503.45 Form 4, filing 0001140361-14-027097

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.

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Codes on this page
S, Open-market sale
Open-market sale

Every value is as reported on the Form 4. A price the filing did not report is marked Not reported and no value is computed from it. Codes outside the open market, drawn in grey behind a dashed rule, are compensation and administrative machinery rather than a decision to trade at the prevailing price.

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 34
  • 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. Dupont Jakob, insider transactions. Retrieved 2026-08-22 from https://ebomi.com/insider/0001553335

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.