Insider · CIK 0001789857

Zalevsky Jonathan

CIK 0001789857 Name as filed on the most recent filing

Filed as Zalevsky Jonathan (36)

39 transaction lines · from 36 filings · filed 2019-11-20 to 2026-08-20 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.

39 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
2026-08-18 S, Open-market sale Nektar TherapeuticsNKTR 13,388, disposed Open Form 4 filing 0001193125-26-359588
2026-06-30 S, Open-market sale Nektar TherapeuticsNKTR 397,670, disposed Open Form 4 filing 0001193125-26-295112
2026-06-15 S, Open-market sale Nektar TherapeuticsNKTR 336,212, disposed Open Form 4 filing 0001193125-26-274534
2026-05-19 S, Open-market sale Nektar TherapeuticsNKTR 13,036, disposed Open Form 4 filing 0001193125-26-235030
2026-02-18 S, Open-market sale Nektar TherapeuticsNKTR 13,140, disposed Open Form 4 filing 0001193125-26-061886
2026-01-20 S, Open-market sale Nektar TherapeuticsNKTR 137,936, disposed Open Form 4 filing 0001193125-26-019843
2025-11-25 S, Open-market sale Nektar TherapeuticsNKTR 62,802, disposed Open Form 4 filing 0001193125-25-297855
2025-09-04 S, Open-market sale Nektar TherapeuticsNKTR 4 lines 57,693, disposed Open Form 4 filing 0000950170-25-113692
2025-09-02 S, Open-market sale Nektar TherapeuticsNKTR 14,599, disposed Open Form 4 filing 0000950170-25-113130
2025-08-19 S, Open-market sale Nektar TherapeuticsNKTR 19,278, disposed Open Form 4 filing 0000950170-25-110775
2025-05-19 S, Open-market sale Nektar TherapeuticsNKTR 7,177, disposed Open Form 4 filing 0000950170-25-075979
2025-02-19 S, Open-market sale Nektar TherapeuticsNKTR 10,403, disposed Open Form 4 filing 0000950170-25-025043
2024-12-19 S, Open-market sale Nektar TherapeuticsNKTR 48,048, disposed Open Form 4 filing 0000950170-24-139242
2024-11-19 S, Open-market sale Nektar TherapeuticsNKTR 7,863, disposed Open Form 4 filing 0000950170-24-129463
2024-08-19 S, Open-market sale Nektar TherapeuticsNKTR 8,788, disposed Open Form 4 filing 0000950170-24-099354
2024-05-17 S, Open-market sale Nektar TherapeuticsNKTR 12,871, disposed Open Form 4 filing 0000950170-24-062645
2024-02-20 S, Open-market sale Nektar TherapeuticsNKTR 6,130, disposed Open Form 4 filing 0000950170-24-019045
2023-11-17 S, Open-market sale Nektar TherapeuticsNKTR 4,727, disposed Open Form 4 filing 0001209191-23-056184
2023-08-16 S, Open-market sale Nektar TherapeuticsNKTR 7,568, disposed Open Form 4 filing 0001209191-23-046462
2023-05-16 S, Open-market sale Nektar TherapeuticsNKTR 7,050, disposed Open Form 4 filing 0001209191-23-030448
2023-02-16 S, Open-market sale Nektar TherapeuticsNKTR 31,452, disposed Open Form 4 filing 0001209191-23-010956
2022-11-16 S, Open-market sale Nektar TherapeuticsNKTR 48,052, disposed Open Form 4 filing 0001209191-22-057968
2022-08-18 S, Open-market sale Nektar TherapeuticsNKTR 342,779, disposed Open Form 4 filing 0001209191-22-046909
2022-08-16 S, Open-market sale Nektar TherapeuticsNKTR 50,266, disposed Open Form 4 filing 0001209191-22-046489
2022-05-16 S, Open-market sale Nektar TherapeuticsNKTR 85,608, disposed Open Form 4 filing 0001209191-22-029905
2022-02-16 S, Open-market sale Nektar TherapeuticsNKTR 119,486, disposed Open Form 4 filing 0001209191-22-011442
2021-11-16 S, Open-market sale Nektar TherapeuticsNKTR 274,636, disposed Open Form 4 filing 0001209191-21-065229
2021-08-16 S, Open-market sale Nektar TherapeuticsNKTR 105,965, disposed Open Form 4 filing 0001209191-21-052395
2021-05-17 S, Open-market sale Nektar TherapeuticsNKTR 569,331, disposed Open Form 4 filing 0001209191-21-034191
2021-02-16 S, Open-market sale Nektar TherapeuticsNKTR 540,034, disposed Open Form 4 filing 0001209191-21-012128
2020-11-23 S, Open-market sale Nektar TherapeuticsNKTR 268,632, disposed Open Form 4 filing 0001209191-20-060584
2020-11-16 S, Open-market sale Nektar TherapeuticsNKTR 501,433, disposed Open Form 4 filing 0001209191-20-059247
2020-08-17 S, Open-market sale Nektar TherapeuticsNKTR 515,354, disposed Open Form 4 filing 0001209191-20-047620
2020-05-18 S, Open-market sale Nektar TherapeuticsNKTR 102,601, disposed Open Form 4 filing 0001209191-20-031018
2020-02-18 S, Open-market sale Nektar TherapeuticsNKTR 106,699, disposed Open Form 4 filing 0001209191-20-011263
2019-11-18 S, Open-market sale Nektar TherapeuticsNKTR 71,161, disposed Open Form 4 filing 0001209191-19-057492

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 0
  • Open-market sale 39
  • 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. Zalevsky Jonathan, insider transactions. Retrieved 2026-08-23 from https://ebomi.com/insider/0001789857

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

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